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-rw-r--r--Documentation/printk-formats.txt6
-rw-r--r--arch/blackfin/include/asm/uaccess.h6
-rw-r--r--arch/m68k/include/asm/uaccess_no.h4
-rw-r--r--arch/mips/lasat/picvue_proc.c18
-rw-r--r--arch/mn10300/include/asm/uaccess.h15
-rw-r--r--arch/powerpc/include/asm/uaccess.h15
-rw-r--r--arch/powerpc/kernel/nvram_64.c19
-rw-r--r--arch/s390/pci/pci_dma.c3
-rw-r--r--arch/sparc/include/asm/uaccess_32.h65
-rw-r--r--arch/sparc/include/asm/uaccess_64.h40
-rw-r--r--arch/sparc/kernel/mdesc.c20
-rw-r--r--arch/um/drivers/hostaudio_kern.c10
-rw-r--r--arch/um/drivers/mconsole_kern.c14
-rw-r--r--arch/x86/kernel/cpuid.c24
-rw-r--r--arch/x86/kernel/msr.c24
-rw-r--r--arch/xtensa/platforms/iss/simdisk.c12
-rw-r--r--drivers/block/cciss.c14
-rw-r--r--drivers/block/mtip32xx/mtip32xx.c23
-rw-r--r--drivers/block/nbd.c1
-rw-r--r--drivers/block/rsxx/core.c11
-rw-r--r--drivers/cdrom/cdrom.c10
-rw-r--r--drivers/char/generic_nvram.c21
-rw-r--r--drivers/char/mbcs.c28
-rw-r--r--drivers/char/nvram.c18
-rw-r--r--drivers/char/nwflash.c31
-rw-r--r--drivers/gpu/drm/amd/amdkfd/kfd_chardev.c33
-rw-r--r--drivers/gpu/vga/vgaarb.c7
-rw-r--r--drivers/md/bcache/util.c2
-rw-r--r--drivers/md/dm-bufio.c2
-rw-r--r--drivers/md/dm-io.c4
-rw-r--r--drivers/mtd/maps/pcmciamtd.c28
-rw-r--r--drivers/net/wireless/ath/wil6210/debugfs.c12
-rw-r--r--drivers/net/wireless/libertas/debugfs.c181
-rw-r--r--drivers/net/wireless/mwifiex/debugfs.c82
-rw-r--r--drivers/net/wireless/ti/wlcore/debugfs.c17
-rw-r--r--drivers/s390/char/vmcp.c11
-rw-r--r--drivers/s390/char/vmur.c15
-rw-r--r--drivers/s390/char/zcore.c13
-rw-r--r--drivers/sbus/char/openprom.c13
-rw-r--r--drivers/staging/lustre/lustre/llite/file.c2
-rw-r--r--drivers/staging/lustre/lustre/llite/llite_internal.h4
-rw-r--r--drivers/staging/lustre/lustre/llite/namei.c4
-rw-r--r--drivers/staging/lustre/lustre/llite/symlink.c2
-rw-r--r--drivers/usb/core/devices.c26
-rw-r--r--drivers/usb/core/devio.c26
-rw-r--r--drivers/usb/host/uhci-debug.c23
-rw-r--r--drivers/usb/misc/sisusbvga/sisusb.c16
-rw-r--r--fs/9p/cache.c8
-rw-r--r--fs/9p/v9fs.h2
-rw-r--r--fs/9p/vfs_inode.c2
-rw-r--r--fs/adfs/adfs.h6
-rw-r--r--fs/adfs/dir.c6
-rw-r--r--fs/adfs/dir_f.c2
-rw-r--r--fs/adfs/dir_fplus.c2
-rw-r--r--fs/affs/affs.h2
-rw-r--r--fs/affs/amigaffs.c13
-rw-r--r--fs/affs/super.c2
-rw-r--r--fs/afs/proc.c25
-rw-r--r--fs/bad_inode.c2
-rw-r--r--fs/block_dev.c12
-rw-r--r--fs/btrfs/super.c4
-rw-r--r--fs/buffer.c21
-rw-r--r--fs/cachefiles/daemon.c12
-rw-r--r--fs/compat.c21
-rw-r--r--fs/compat_ioctl.c11
-rw-r--r--fs/coredump.c8
-rw-r--r--fs/dcache.c14
-rw-r--r--fs/dlm/user.c11
-rw-r--r--fs/ecryptfs/inode.c4
-rw-r--r--fs/exec.c4
-rw-r--r--fs/ext2/xattr.c6
-rw-r--r--fs/ext4/page-io.c5
-rw-r--r--fs/ext4/xattr.c6
-rw-r--r--fs/f2fs/debug.c6
-rw-r--r--fs/f2fs/f2fs.h6
-rw-r--r--fs/fcntl.c3
-rw-r--r--fs/file.c6
-rw-r--r--fs/gfs2/ops_fstype.c4
-rw-r--r--fs/hfs/mdb.c4
-rw-r--r--fs/hpfs/map.c2
-rw-r--r--fs/internal.h2
-rw-r--r--fs/jbd2/transaction.c6
-rw-r--r--fs/jfs/jfs_logmgr.c9
-rw-r--r--fs/logfs/logfs.h4
-rw-r--r--fs/logfs/readwrite.c4
-rw-r--r--fs/logfs/segment.c2
-rw-r--r--fs/minix/itree_v1.c9
-rw-r--r--fs/minix/itree_v2.c9
-rw-r--r--fs/namei.c200
-rw-r--r--fs/namespace.c39
-rw-r--r--fs/nfsd/nfs3xdr.c2
-rw-r--r--fs/nfsd/nfs4xdr.c8
-rw-r--r--fs/nfsd/vfs.c23
-rw-r--r--fs/nilfs2/super.c6
-rw-r--r--fs/open.c5
-rw-r--r--fs/proc/base.c17
-rw-r--r--fs/proc/fd.c1
-rw-r--r--fs/proc_namespace.c27
-rw-r--r--fs/read_write.c39
-rw-r--r--fs/reiserfs/journal.c24
-rw-r--r--fs/reiserfs/prints.c9
-rw-r--r--fs/reiserfs/procfs.c5
-rw-r--r--fs/select.c6
-rw-r--r--fs/splice.c8
-rw-r--r--fs/squashfs/super.c7
-rw-r--r--fs/super.c4
-rw-r--r--fs/xattr.c38
-rw-r--r--fs/xfs/xfs_buf.c8
-rw-r--r--include/linux/fs.h14
-rw-r--r--include/linux/namei.h1
-rw-r--r--include/linux/string.h1
-rw-r--r--kernel/sysctl.c79
-rw-r--r--kernel/trace/blktrace.c12
-rw-r--r--kernel/trace/trace_events.c28
-rw-r--r--kernel/trace/trace_events_trigger.c15
-rw-r--r--kernel/user_namespace.c21
-rw-r--r--lib/dynamic_debug.c11
-rw-r--r--lib/vsprintf.c29
-rw-r--r--mm/util.c31
-rw-r--r--net/9p/trans_virtio.c16
-rw-r--r--net/rxrpc/ar-key.c24
-rw-r--r--security/integrity/iint.c11
-rw-r--r--security/selinux/selinuxfs.c114
-rw-r--r--security/smack/smackfs.c114
-rw-r--r--security/tomoyo/securityfs_if.c11
125 files changed, 792 insertions, 1478 deletions
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index b784c270105f..6389551bbad6 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -250,6 +250,12 @@ dentry names:
Passed by reference.
+block_device names:
+
+ %pg sda, sda1 or loop0p1
+
+ For printing name of block_device pointers.
+
struct va_format:
%pV
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
index 90612a7f2cf3..12f5d6851bbc 100644
--- a/arch/blackfin/include/asm/uaccess.h
+++ b/arch/blackfin/include/asm/uaccess.h
@@ -168,12 +168,6 @@ static inline int bad_user_access_length(void)
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
-#define copy_to_user_ret(to, from, n, retval) ({ if (copy_to_user(to, from, n))\
- return retval; })
-
-#define copy_from_user_ret(to, from, n, retval) ({ if (copy_from_user(to, from, n))\
- return retval; })
-
static inline unsigned long __must_check
copy_from_user(void *to, const void __user *from, unsigned long n)
{
diff --git a/arch/m68k/include/asm/uaccess_no.h b/arch/m68k/include/asm/uaccess_no.h
index 68bbe9b312f1..1bdf15263754 100644
--- a/arch/m68k/include/asm/uaccess_no.h
+++ b/arch/m68k/include/asm/uaccess_no.h
@@ -135,10 +135,6 @@ extern int __get_user_bad(void);
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
-#define copy_to_user_ret(to,from,n,retval) ({ if (copy_to_user(to,from,n)) return retval; })
-
-#define copy_from_user_ret(to,from,n,retval) ({ if (copy_from_user(to,from,n)) return retval; })
-
/*
* Copy a null terminated string from userspace.
*/
diff --git a/arch/mips/lasat/picvue_proc.c b/arch/mips/lasat/picvue_proc.c
index 2bcd8391bc93..b42095880667 100644
--- a/arch/mips/lasat/picvue_proc.c
+++ b/arch/mips/lasat/picvue_proc.c
@@ -22,7 +22,6 @@
static DEFINE_MUTEX(pvc_mutex);
static char pvc_lines[PVC_NLINES][PVC_LINELEN+1];
static int pvc_linedata[PVC_NLINES];
-static struct proc_dir_entry *pvc_display_dir;
static char *pvc_linename[PVC_NLINES] = {"line1", "line2"};
#define DISPLAY_DIR_NAME "display"
static int scroll_dir, scroll_interval;
@@ -169,22 +168,17 @@ void pvc_proc_timerfunc(unsigned long data)
static void pvc_proc_cleanup(void)
{
- int i;
- for (i = 0; i < PVC_NLINES; i++)
- remove_proc_entry(pvc_linename[i], pvc_display_dir);
- remove_proc_entry("scroll", pvc_display_dir);
- remove_proc_entry(DISPLAY_DIR_NAME, NULL);
-
+ remove_proc_subtree(DISPLAY_DIR_NAME, NULL);
del_timer_sync(&timer);
}
static int __init pvc_proc_init(void)
{
- struct proc_dir_entry *proc_entry;
+ struct proc_dir_entry *dir, *proc_entry;
int i;
- pvc_display_dir = proc_mkdir(DISPLAY_DIR_NAME, NULL);
- if (pvc_display_dir == NULL)
+ dir = proc_mkdir(DISPLAY_DIR_NAME, NULL);
+ if (dir == NULL)
goto error;
for (i = 0; i < PVC_NLINES; i++) {
@@ -192,12 +186,12 @@ static int __init pvc_proc_init(void)
pvc_linedata[i] = i;
}
for (i = 0; i < PVC_NLINES; i++) {
- proc_entry = proc_create_data(pvc_linename[i], 0644, pvc_display_dir,
+ proc_entry = proc_create_data(pvc_linename[i], 0644, dir,
&pvc_line_proc_fops, &pvc_linedata[i]);
if (proc_entry == NULL)
goto error;
}
- proc_entry = proc_create("scroll", 0644, pvc_display_dir,
+ proc_entry = proc_create("scroll", 0644, dir,
&pvc_scroll_proc_fops);
if (proc_entry == NULL)
goto error;
diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h
index 537278746a15..20f7bf6de384 100644
--- a/arch/mn10300/include/asm/uaccess.h
+++ b/arch/mn10300/include/asm/uaccess.h
@@ -110,21 +110,6 @@ extern int fixup_exception(struct pt_regs *regs);
#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
#define __get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
-/*
- * The "xxx_ret" versions return constant specified in third argument, if
- * something bad happens. These macros can be optimized for the
- * case of just returning from the function xxx_ret is used.
- */
-
-#define put_user_ret(x, ptr, ret) \
- ({ if (put_user((x), (ptr))) return (ret); })
-#define get_user_ret(x, ptr, ret) \
- ({ if (get_user((x), (ptr))) return (ret); })
-#define __put_user_ret(x, ptr, ret) \
- ({ if (__put_user((x), (ptr))) return (ret); })
-#define __get_user_ret(x, ptr, ret) \
- ({ if (__get_user((x), (ptr))) return (ret); })
-
struct __large_struct { unsigned long buf[100]; };
#define __m(x) (*(struct __large_struct *)(x))
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 2a8ebae0936b..b7c20f0b8fbe 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -274,21 +274,6 @@ do { \
__gu_err; \
})
-#ifndef __powerpc64__
-#define __get_user64_nocheck(x, ptr, size) \
-({ \
- long __gu_err; \
- long long __gu_val; \
- __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
- __chk_user_ptr(ptr); \
- if (!is_kernel_addr((unsigned long)__gu_addr)) \
- might_fault(); \
- __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
- (x) = (__force __typeof__(*(ptr)))__gu_val; \
- __gu_err; \
-})
-#endif /* __powerpc64__ */
-
#define __get_user_check(x, ptr, size) \
({ \
long __gu_err = -EFAULT; \
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 32e26526f7e4..0cab9e8c3794 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/kmsg_dump.h>
+#include <linux/pagemap.h>
#include <linux/pstore.h>
#include <linux/zlib.h>
#include <asm/uaccess.h>
@@ -733,24 +734,10 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
{
- int size;
-
if (ppc_md.nvram_size == NULL)
return -ENODEV;
- size = ppc_md.nvram_size();
-
- switch (origin) {
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += size;
- break;
- }
- if (offset < 0)
- return -EINVAL;
- file->f_pos = offset;
- return file->f_pos;
+ return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+ ppc_md.nvram_size());
}
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index d348f2c09a1e..32da0a6ecec2 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -366,8 +366,7 @@ static void *s390_dma_alloc(struct device *dev, size_t size,
pa = page_to_phys(page);
memset((void *) pa, 0, size);
- map = s390_dma_map_pages(dev, page, pa % PAGE_SIZE,
- size, DMA_BIDIRECTIONAL, NULL);
+ map = s390_dma_map_pages(dev, page, 0, size, DMA_BIDIRECTIONAL, NULL);
if (dma_mapping_error(dev, map)) {
free_pages(pa, get_order(size));
return NULL;
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 64ee103dc29d..57aca2792d29 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -205,31 +205,6 @@ int __put_user_bad(void);
__gu_ret; \
})
-#define __get_user_check_ret(x, addr, size, type, retval) ({ \
- register unsigned long __gu_val __asm__ ("l1"); \
- if (__access_ok(addr, size)) { \
- switch (size) { \
- case 1: \
- __get_user_asm_ret(__gu_val, ub, addr, retval); \
- break; \
- case 2: \
- __get_user_asm_ret(__gu_val, uh, addr, retval); \
- break; \
- case 4: \
- __get_user_asm_ret(__gu_val, , addr, retval); \
- break; \
- case 8: \
- __get_user_asm_ret(__gu_val, d, addr, retval); \
- break; \
- default: \
- if (__get_user_bad()) \
- return retval; \
- } \
- x = (__force type) __gu_val; \
- } else \
- return retval; \
-})
-
#define __get_user_nocheck(x, addr, size, type) ({ \
register int __gu_ret; \
register unsigned long __gu_val; \
@@ -247,20 +222,6 @@ int __put_user_bad(void);
__gu_ret; \
})
-#define __get_user_nocheck_ret(x, addr, size, type, retval) ({ \
- register unsigned long __gu_val __asm__ ("l1"); \
- switch (size) { \
- case 1: __get_user_asm_ret(__gu_val, ub, addr, retval); break; \
- case 2: __get_user_asm_ret(__gu_val, uh, addr, retval); break; \
- case 4: __get_user_asm_ret(__gu_val, , addr, retval); break; \
- case 8: __get_user_asm_ret(__gu_val, d, addr, retval); break; \
- default: \
- if (__get_user_bad()) \
- return retval; \
- } \
- x = (__force type) __gu_val; \
-})
-
#define __get_user_asm(x, size, addr, ret) \
__asm__ __volatile__( \
"/* Get user asm, inline. */\n" \
@@ -281,32 +242,6 @@ __asm__ __volatile__( \
: "=&r" (ret), "=&r" (x) : "m" (*__m(addr)), \
"i" (-EFAULT))
-#define __get_user_asm_ret(x, size, addr, retval) \
-if (__builtin_constant_p(retval) && retval == -EFAULT) \
- __asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
- "1:\t" "ld"#size " %1, %0\n\n\t" \
- ".section __ex_table,#alloc\n\t" \
- ".align 4\n\t" \
- ".word 1b,__ret_efault\n\n\t" \
- ".previous\n\t" \
- : "=&r" (x) : "m" (*__m(addr))); \
-else \
- __asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
- "1:\t" "ld"#size " %1, %0\n\n\t" \
- ".section .fixup,#alloc,#execinstr\n\t" \
- ".align 4\n" \
- "3:\n\t" \
- "ret\n\t" \
- " restore %%g0, %2, %%o0\n\n\t" \
- ".previous\n\t" \
- ".section __ex_table,#alloc\n\t" \
- ".align 4\n\t" \
- ".word 1b, 3b\n\n\t" \
- ".previous\n\t" \
- : "=&r" (x) : "m" (*__m(addr)), "i" (retval))
-
int __get_user_bad(void);
unsigned long __copy_user(void __user *to, const void __user *from, unsigned long size);
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index ea6e9a20f3ff..e9a51d64974d 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -179,20 +179,6 @@ int __put_user_bad(void);
__gu_ret; \
})
-#define __get_user_nocheck_ret(data, addr, size, type, retval) ({ \
- register unsigned long __gu_val __asm__ ("l1"); \
- switch (size) { \
- case 1: __get_user_asm_ret(__gu_val, ub, addr, retval); break; \
- case 2: __get_user_asm_ret(__gu_val, uh, addr, retval); break; \
- case 4: __get_user_asm_ret(__gu_val, uw, addr, retval); break; \
- case 8: __get_user_asm_ret(__gu_val, x, addr, retval); break; \
- default: \
- if (__get_user_bad()) \
- return retval; \
- } \
- data = (__force type) __gu_val; \
-})
-
#define __get_user_asm(x, size, addr, ret) \
__asm__ __volatile__( \
"/* Get user asm, inline. */\n" \
@@ -214,32 +200,6 @@ __asm__ __volatile__( \
: "=r" (ret), "=r" (x) : "r" (__m(addr)), \
"i" (-EFAULT))
-#define __get_user_asm_ret(x, size, addr, retval) \
-if (__builtin_constant_p(retval) && retval == -EFAULT) \
- __asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
- "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b,__ret_efault\n\n\t" \
- ".previous\n\t" \
- : "=r" (x) : "r" (__m(addr))); \
-else \
- __asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
- "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
- ".section .fixup,#alloc,#execinstr\n\t" \
- ".align 4\n" \
- "3:\n\t" \
- "ret\n\t" \
- " restore %%g0, %2, %%o0\n\n\t" \
- ".previous\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b, 3b\n\n\t" \
- ".previous\n\t" \
- : "=r" (x) : "r" (__m(addr)), "i" (retval))
-
int __get_user_bad(void);
unsigned long __must_check ___copy_from_user(void *to,
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index 6f80936e0eea..11228861d9b4 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -1033,25 +1033,9 @@ static ssize_t mdesc_read(struct file *file, char __user *buf,
static loff_t mdesc_llseek(struct file *file, loff_t offset, int whence)
{
- struct mdesc_handle *hp;
-
- switch (whence) {
- case SEEK_CUR:
- offset += file->f_pos;
- break;
- case SEEK_SET:
- break;
- default:
- return -EINVAL;
- }
-
- hp = file->private_data;
- if (offset > hp->handle_size)
- return -EINVAL;
- else
- file->f_pos = offset;
+ struct mdesc_handle *hp = file->private_data;
- return offset;
+ return no_seek_end_llseek_size(file, offset, whence, hp->handle_size);
}
/* mdesc_close() - /dev/mdesc is being closed, release the reference to
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index f6b911cc3923..3a4b58730f5f 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -105,13 +105,9 @@ static ssize_t hostaudio_write(struct file *file, const char __user *buffer,
printk(KERN_DEBUG "hostaudio: write called, count = %d\n", count);
#endif
- kbuf = kmalloc(count, GFP_KERNEL);
- if (kbuf == NULL)
- return -ENOMEM;
-
- err = -EFAULT;
- if (copy_from_user(kbuf, buffer, count))
- goto out;
+ kbuf = memdup_user(buffer, count);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
err = os_write_file(state->fd, kbuf, count);
if (err < 0)
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 29880c9b324e..b821b13d343a 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -748,19 +748,11 @@ static ssize_t mconsole_proc_write(struct file *file,
{
char *buf;
- buf = kmalloc(count + 1, GFP_KERNEL);
- if (buf == NULL)
- return -ENOMEM;
-
- if (copy_from_user(buf, buffer, count)) {
- count = -EFAULT;
- goto out;
- }
-
- buf[count] = '\0';
+ buf = memdup_user_nul(buffer, count);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
mconsole_notify(notify_socket, MCONSOLE_USER_NOTIFY, buf, count);
- out:
kfree(buf);
return count;
}
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index bd3507da39f0..2836de390f95 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -58,28 +58,6 @@ static void cpuid_smp_cpuid(void *cmd_block)
&cmd->eax, &cmd->ebx, &cmd->ecx, &cmd->edx);
}
-static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
-{
- loff_t ret;
- struct inode *inode = file->f_mapping->host;
-
- mutex_lock(&inode->i_mutex);
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
- mutex_unlock(&inode->i_mutex);
- return ret;
-}
-
static ssize_t cpuid_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -132,7 +110,7 @@ static int cpuid_open(struct inode *inode, struct file *file)
*/
static const struct file_operations cpuid_fops = {
.owner = THIS_MODULE,
- .llseek = cpuid_seek,
+ .llseek = no_seek_end_llseek,
.read = cpuid_read,
.open = cpuid_open,
};
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 113e70784854..64f9616f93f1 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -45,28 +45,6 @@
static struct class *msr_class;
-static loff_t msr_seek(struct file *file, loff_t offset, int orig)
-{
- loff_t ret;
- struct inode *inode = file_inode(file);
-
- mutex_lock(&inode->i_mutex);
- switch (orig) {
- case SEEK_SET:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case SEEK_CUR:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
- mutex_unlock(&inode->i_mutex);
- return ret;
-}
-
static ssize_t msr_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -194,7 +172,7 @@ static int msr_open(struct inode *inode, struct file *file)
*/
static const struct file_operations msr_fops = {
.owner = THIS_MODULE,
- .llseek = msr_seek,
+ .llseek = no_seek_end_llseek,
.read = msr_read,
.write = msr_write,
.open = msr_open,
diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index 3c3ace2c46b6..f58a4e6472cb 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -227,16 +227,12 @@ static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
static ssize_t proc_write_simdisk(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- char *tmp = kmalloc(count + 1, GFP_KERNEL);
+ char *tmp = memdup_user_nul(buf, count);
struct simdisk *dev = PDE_DATA(file_inode(file));
int err;
- if (tmp == NULL)
- return -ENOMEM;
- if (copy_from_user(tmp, buf, count)) {
- err = -EFAULT;
- goto out_free;
- }
+ if (IS_ERR(tmp))
+ return PTR_ERR(tmp);
err = simdisk_detach(dev);
if (err != 0)
@@ -244,8 +240,6 @@ static ssize_t proc_write_simdisk(struct file *file, const char __user *buf,
if (count > 0 && tmp[count - 1] == '\n')
tmp[count - 1] = 0;
- else
- tmp[count] = 0;
if (tmp[0])
err = simdisk_attach(dev, tmp);
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 0422c47261c3..b38bd06d564c 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -514,14 +514,9 @@ cciss_proc_write(struct file *file, const char __user *buf,
if (!buf || length > PAGE_SIZE - 1)
return -EINVAL;
- buffer = (char *)__get_free_page(GFP_KERNEL);
- if (!buffer)
- return -ENOMEM;
-
- err = -EFAULT;
- if (copy_from_user(buffer, buf, length))
- goto out;
- buffer[length] = '\0';
+ buffer = memdup_user_nul(buf, length);
+ if (IS_ERR(buffer))
+ return PTR_ERR(buffer);
#ifdef CONFIG_CISS_SCSI_TAPE
if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) {
@@ -537,8 +532,7 @@ cciss_proc_write(struct file *file, const char __user *buf,
/* might be nice to have "disengage" too, but it's not
safely possible. (only 1 module use count, lock issues.) */
-out:
- free_page((unsigned long)buffer);
+ kfree(buffer);
return err;
}
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 3457ac8c03e2..34997d8ecd64 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2029,13 +2029,10 @@ static int exec_drive_taskfile(struct driver_data *dd,
}
if (taskout) {
- outbuf = kzalloc(taskout, GFP_KERNEL);
- if (outbuf == NULL) {
- err = -ENOMEM;
- goto abort;
- }
- if (copy_from_user(outbuf, buf + outtotal, taskout)) {
- err = -EFAULT;
+ outbuf = memdup_user(buf + outtotal, taskout);
+ if (IS_ERR(outbuf)) {
+ err = PTR_ERR(outbuf);
+ outbuf = NULL;
goto abort;
}
outbuf_dma = pci_map_single(dd->pdev,
@@ -2050,14 +2047,10 @@ static int exec_drive_taskfile(struct driver_data *dd,
}
if (taskin) {
- inbuf = kzalloc(taskin, GFP_KERNEL);
- if (inbuf == NULL) {
- err = -ENOMEM;
- goto abort;
- }
-
- if (copy_from_user(inbuf, buf + intotal, taskin)) {
- err = -EFAULT;
+ inbuf = memdup_user(buf + intotal, taskin);
+ if (IS_ERR(inbuf)) {
+ err = PTR_ERR(inbuf);
+ inbuf = NULL;
goto abort;
}
inbuf_dma = pci_map_single(dd->pdev,
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 93b3f99b6865..e4c5cc107934 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -827,6 +827,7 @@ static const struct block_device_operations nbd_fops =
{
.owner = THIS_MODULE,
.ioctl = nbd_ioctl,
+ .compat_ioctl = nbd_ioctl,
};
#if IS_ENABLED(CONFIG_DEBUG_FS)
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index d8b2488aaade..34997df132e2 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -203,14 +203,11 @@ static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf,
char *buf;
ssize_t st;
- buf = kzalloc(cnt, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
+ buf = memdup_user(ubuf, cnt);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- st = copy_from_user(buf, ubuf, cnt);
- if (!st)
- st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt,
- buf, 1);
+ st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1);
kfree(buf);
if (st)
return st;
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index c206ccda899b..1b257ea9776a 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -3186,15 +3186,11 @@ static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
if (!CDROM_CAN(CDC_DVD))
return -ENOSYS;
- s = kmalloc(size, GFP_KERNEL);
- if (!s)
- return -ENOMEM;
+ s = memdup_user(arg, size);
+ if (IS_ERR(s))
+ return PTR_ERR(s);
cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
- if (copy_from_user(s, arg, size)) {
- kfree(s);
- return -EFAULT;
- }
ret = dvd_read_struct(cdi, s, cgc);
if (ret)
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 6c4f4b5a9dd3..073db9558379 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -20,6 +20,7 @@
#include <linux/fcntl.h>
#include <linux/init.h>
#include <linux/mutex.h>
+#include <linux/pagemap.h>
#include <asm/uaccess.h>
#include <asm/nvram.h>
#ifdef CONFIG_PPC_PMAC
@@ -33,24 +34,8 @@ static ssize_t nvram_len;
static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
{
- switch (origin) {
- case 0:
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += nvram_len;
- break;
- default:
- offset = -1;
- }
- if (offset < 0)
- return -EINVAL;
-
- file->f_pos = offset;
-
- return file->f_pos;
+ return generic_file_llseek_size(file, offset, origin,
+ MAX_LFS_FILESIZE, nvram_len);
}
static ssize_t read_nvram(struct file *file, char __user *buf,
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index e5d3e3f7a49b..67d426470e53 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -26,6 +26,7 @@
#include <linux/uio.h>
#include <linux/mutex.h>
#include <linux/slab.h>
+#include <linux/pagemap.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -451,31 +452,8 @@ mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * o
static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
{
- loff_t newpos;
-
- switch (whence) {
- case SEEK_SET:
- newpos = off;
- break;
-
- case SEEK_CUR:
- newpos = filp->f_pos + off;
- break;
-
- case SEEK_END:
- newpos = MBCS_SRAM_SIZE + off;
- break;
-
- default: /* can't happen */
- return -EINVAL;
- }
-
- if (newpos < 0)
- return -EINVAL;
-
- filp->f_pos = newpos;
-
- return newpos;
+ return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
+ MBCS_SRAM_SIZE);
}
static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 97c2d8d433d6..01292328a456 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -110,6 +110,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/mutex.h>
+#include <linux/pagemap.h>
static DEFINE_MUTEX(nvram_mutex);
@@ -213,21 +214,8 @@ void nvram_set_checksum(void)
static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
{
- switch (origin) {
- case 0:
- /* nothing to do */
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += NVRAM_BYTES;
- break;
- default:
- return -EINVAL;
- }
-
- return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
+ return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+ NVRAM_BYTES);
}
static ssize_t nvram_read(struct file *file, char __user *buf,
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index e371480d3639..dbe598de9b74 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -277,36 +277,7 @@ static loff_t flash_llseek(struct file *file, loff_t offset, int orig)
printk(KERN_DEBUG "flash_llseek: offset=0x%X, orig=0x%X.\n",
(unsigned int) offset, orig);
- switch (orig) {
- case 0:
- if (offset < 0) {
- ret = -EINVAL;
- break;
- }
-
- if ((unsigned int) offset > gbFlashSize) {
- ret = -EINVAL;
- break;
- }
-
- file->f_pos = (unsigned int) offset;
- ret = file->f_pos;
- break;
- case 1:
- if ((file->f_pos + offset) > gbFlashSize) {
- ret = -EINVAL;
- break;
- }
- if ((file->f_pos + offset) < 0) {
- ret = -EINVAL;
- break;
- }
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
+ ret = no_seek_end_llseek_size(file, offset, orig, gbFlashSize);
mutex_unlock(&flash_mutex);
return ret;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index c6a1b4cc6458..d321222fd92e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -559,19 +559,10 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
/* this is the actual buffer to work with */
- args_buff = kmalloc(args->buf_size_in_bytes -
- sizeof(*args), GFP_KERNEL);
- if (args_buff == NULL)
- return -ENOMEM;
-
- status = copy_from_user(args_buff, cmd_from_user,
+ args_buff = memdup_user(args_buff,
args->buf_size_in_bytes - sizeof(*args));
-
- if (status != 0) {
- pr_debug("Failed to copy address watch user data\n");
- kfree(args_buff);
- return -EINVAL;
- }
+ if (IS_ERR(args_buff))
+ return PTR_ERR(args_buff);
aw_info.process = p;
@@ -677,22 +668,12 @@ static int kfd_ioctl_dbg_wave_control(struct file *filep,
if (cmd_from_user == NULL)
return -EINVAL;
- /* this is the actual buffer to work with */
+ /* copy the entire buffer from user */
- args_buff = kmalloc(args->buf_size_in_bytes - sizeof(*args),
- GFP_KERNEL);
-
- if (args_buff == NULL)
- return -ENOMEM;
-
- /* Now copy the entire buffer from user */
- status = copy_from_user(args_buff, cmd_from_user,
+ args_buff = memdup_user(cmd_from_user,
args->buf_size_in_bytes - sizeof(*args));
- if (status != 0) {
- pr_debug("Failed to copy wave control user data\n");
- kfree(args_buff);
- return -EINVAL;
- }
+ if (IS_ERR(args_buff))
+ return PTR_ERR(args_buff);
/* move ptr to the start of the "pay-load" area */
wac_info.process = p;
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 9abcaa53bd25..f17cb0431833 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -1163,12 +1163,8 @@ done:
static unsigned int vga_arb_fpoll(struct file *file, poll_table *wait)
{
- struct vga_arb_private *priv = file->private_data;
-
pr_debug("%s\n", __func__);
- if (priv == NULL)
- return -ENODEV;
poll_wait(file, &vga_wait_queue, wait);
return POLLIN;
}
@@ -1209,9 +1205,6 @@ static int vga_arb_release(struct inode *inode, struct file *file)
pr_debug("%s\n", __func__);
- if (priv == NULL)
- return -ENODEV;
-
spin_lock_irqsave(&vga_user_lock, flags);
list_del(&priv->list);
for (i = 0; i < MAX_USER_CARDS; i++) {
diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
index db3ae4c2b223..dde6172f3f10 100644
--- a/drivers/md/bcache/util.c
+++ b/drivers/md/bcache/util.c
@@ -230,7 +230,7 @@ void bch_bio_map(struct bio *bio, void *base)
BUG_ON(!bio->bi_iter.bi_size);
BUG_ON(bio->bi_vcnt);
- bv->bv_offset = base ? ((unsigned long) base) % PAGE_SIZE : 0;
+ bv->bv_offset = base ? offset_in_page(base) : 0;
goto start;
for (; size; bio->bi_vcnt++, bv++) {
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 6b832e06580d..cd77216beff1 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -650,7 +650,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block,
do {
if (!bio_add_page(&b->bio, virt_to_page(ptr),
len < PAGE_SIZE ? len : PAGE_SIZE,
- virt_to_phys(ptr) & (PAGE_SIZE - 1))) {
+ offset_in_page(ptr))) {
BUG_ON(b->c->block_size <= PAGE_SIZE);
use_dmio(b, rw, block, end_io);
return;
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 81c5e1a1f363..06d426eb5a30 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -246,7 +246,7 @@ static void vm_dp_init(struct dpages *dp, void *data)
{
dp->get_page = vm_get_page;
dp->next_page = vm_next_page;
- dp->context_u = ((unsigned long) data) & (PAGE_SIZE - 1);
+ dp->context_u = offset_in_page(data);
dp->context_ptr = data;
}
@@ -271,7 +271,7 @@ static void km_dp_init(struct dpages *dp, void *data)
{
dp->get_page = km_get_page;
dp->next_page = km_next_page;
- dp->context_u = ((unsigned long) data) & (PAGE_SIZE - 1);
+ dp->context_u = offset_in_page(data);
dp->context_ptr = data;
}
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
index 3dad2111b7e3..70bb403f69f7 100644
--- a/drivers/mtd/maps/pcmciamtd.c
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -30,7 +30,7 @@
struct pcmciamtd_dev {
struct pcmcia_device *p_dev;
- caddr_t win_base; /* ioremapped address of PCMCIA window */
+ void __iomem *win_base; /* ioremapped address of PCMCIA window */
unsigned int win_size; /* size of window */
unsigned int offset; /* offset into card the window currently points at */
struct map_info pcmcia_map;
@@ -80,7 +80,7 @@ MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)")
/* read/write{8,16} copy_{from,to} routines with window remapping
* to access whole card
*/
-static caddr_t remap_window(struct map_info *map, unsigned long to)
+static void __iomem *remap_window(struct map_info *map, unsigned long to)
{
struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
struct resource *win = (struct resource *) map->map_priv_2;
@@ -107,7 +107,7 @@ static caddr_t remap_window(struct map_info *map, unsigned long to)
static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
{
- caddr_t addr;
+ void __iomem *addr;
map_word d = {{0}};
addr = remap_window(map, ofs);
@@ -122,7 +122,7 @@ static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
{
- caddr_t addr;
+ void __iomem *addr;
map_word d = {{0}};
addr = remap_window(map, ofs);
@@ -143,7 +143,7 @@ static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long
pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
while(len) {
int toread = win_size - (from & (win_size-1));
- caddr_t addr;
+ void __iomem *addr;
if(toread > len)
toread = len;
@@ -163,7 +163,7 @@ static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long
static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
{
- caddr_t addr = remap_window(map, adr);
+ void __iomem *addr = remap_window(map, adr);
if(!addr)
return;
@@ -175,7 +175,7 @@ static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long
static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
{
- caddr_t addr = remap_window(map, adr);
+ void __iomem *addr = remap_window(map, adr);
if(!addr)
return;
@@ -192,7 +192,7 @@ static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const v
pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
while(len) {
int towrite = win_size - (to & (win_size-1));
- caddr_t addr;
+ void __iomem *addr;
if(towrite > len)
towrite = len;
@@ -216,7 +216,7 @@ static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const v
static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
map_word d = {{0}};
if(DEV_REMOVED(map))
@@ -231,7 +231,7 @@ static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
map_word d = {{0}};
if(DEV_REMOVED(map))
@@ -246,7 +246,7 @@ static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
if(DEV_REMOVED(map))
return;
@@ -258,7 +258,7 @@ static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from,
static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
if(DEV_REMOVED(map))
return;
@@ -271,7 +271,7 @@ static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
if(DEV_REMOVED(map))
return;
@@ -284,7 +284,7 @@ static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
- caddr_t win_base = (caddr_t)map->map_priv_2;
+ void __iomem *win_base = (void __iomem *)map->map_priv_2;
if(DEV_REMOVED(map))
return;
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index 97bc186f9728..a1d10b85989f 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -580,16 +580,10 @@ static ssize_t wil_write_file_rxon(struct file *file, const char __user *buf,
long channel;
bool on;
- char *kbuf = kmalloc(len + 1, GFP_KERNEL);
-
- if (!kbuf)
- return -ENOMEM;
- if (copy_from_user(kbuf, buf, len)) {
- kfree(kbuf);
- return -EIO;
- }
+ char *kbuf = memdup_user_nul(buf, len);
- kbuf[len] = '\0';
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
rc = kstrtol(kbuf, 0, &channel);
kfree(kbuf);
if (rc)
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 26cbf1dcc662..faed1823c58e 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -56,19 +56,15 @@ static ssize_t lbs_sleepparams_write(struct file *file,
loff_t *ppos)
{
struct lbs_private *priv = file->private_data;
- ssize_t buf_size, ret;
+ ssize_t ret;
struct sleep_params sp;
int p1, p2, p3, p4, p5, p6;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(user_buf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, user_buf, buf_size)) {
- ret = -EFAULT;
- goto out_unlock;
- }
ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
if (ret != 6) {
ret = -EINVAL;
@@ -88,7 +84,7 @@ static ssize_t lbs_sleepparams_write(struct file *file,
ret = -EINVAL;
out_unlock:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -125,18 +121,14 @@ static ssize_t lbs_host_sleep_write(struct file *file,
loff_t *ppos)
{
struct lbs_private *priv = file->private_data;
- ssize_t buf_size, ret;
+ ssize_t ret;
int host_sleep;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(user_buf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, user_buf, buf_size)) {
- ret = -EFAULT;
- goto out_unlock;
- }
ret = sscanf(buf, "%d", &host_sleep);
if (ret != 1) {
ret = -EINVAL;
@@ -162,7 +154,7 @@ static ssize_t lbs_host_sleep_write(struct file *file,
ret = count;
out_unlock:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -281,21 +273,15 @@ static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
struct cmd_ds_802_11_subscribe_event *events;
struct mrvl_ie_thresholds *tlv;
struct lbs_private *priv = file->private_data;
- ssize_t buf_size;
int value, freq, new_mask;
uint16_t curr_mask;
char *buf;
int ret;
- buf = (char *)get_zeroed_page(GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- ret = -EFAULT;
- goto out_page;
- }
ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
if (ret != 3) {
ret = -EINVAL;
@@ -343,7 +329,7 @@ static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
out_events:
kfree(events);
out_page:
- free_page((unsigned long)buf);
+ kfree(buf);
return ret;
}
@@ -472,22 +458,15 @@ static ssize_t lbs_rdmac_write(struct file *file,
size_t count, loff_t *ppos)
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
priv->mac_offset = simple_strtoul(buf, NULL, 16);
- res = count;
-out_unlock:
- free_page(addr);
- return res;
+ kfree(buf);
+ return count;
}
static ssize_t lbs_wrmac_write(struct file *file,
@@ -496,18 +475,14 @@ static ssize_t lbs_wrmac_write(struct file *file,
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
+ ssize_t res;
u32 offset, value;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
res = sscanf(buf, "%x %x", &offset, &value);
if (res != 2) {
res = -EFAULT;
@@ -520,7 +495,7 @@ static ssize_t lbs_wrmac_write(struct file *file,
if (!res)
res = count;
out_unlock:
- free_page(addr);
+ kfree(buf);
return res;
}
@@ -554,22 +529,16 @@ static ssize_t lbs_rdbbp_write(struct file *file,
size_t count, loff_t *ppos)
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
priv->bbp_offset = simple_strtoul(buf, NULL, 16);
- res = count;
-out_unlock:
- free_page(addr);
- return res;
+ kfree(buf);
+
+ return count;
}
static ssize_t lbs_wrbbp_write(struct file *file,
@@ -578,18 +547,14 @@ static ssize_t lbs_wrbbp_write(struct file *file,
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
+ ssize_t res;
u32 offset, value;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
res = sscanf(buf, "%x %x", &offset, &value);
if (res != 2) {
res = -EFAULT;
@@ -602,7 +567,7 @@ static ssize_t lbs_wrbbp_write(struct file *file,
if (!res)
res = count;
out_unlock:
- free_page(addr);
+ kfree(buf);
return res;
}
@@ -636,22 +601,15 @@ static ssize_t lbs_rdrf_write(struct file *file,
size_t count, loff_t *ppos)
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
priv->rf_offset = simple_strtoul(buf, NULL, 16);
- res = count;
-out_unlock:
- free_page(addr);
- return res;
+ kfree(buf);
+ return count;
}
static ssize_t lbs_wrrf_write(struct file *file,
@@ -660,18 +618,14 @@ static ssize_t lbs_wrrf_write(struct file *file,
{
struct lbs_private *priv = file->private_data;
- ssize_t res, buf_size;
+ ssize_t res;
u32 offset, value;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- if (!buf)
- return -ENOMEM;
+ char *buf;
+
+ buf = memdup_user_nul(userbuf, min(count, len - 1));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- buf_size = min(count, len - 1);
- if (copy_from_user(buf, userbuf, buf_size)) {
- res = -EFAULT;
- goto out_unlock;
- }
res = sscanf(buf, "%x %x", &offset, &value);
if (res != 2) {
res = -EFAULT;
@@ -684,7 +638,7 @@ static ssize_t lbs_wrrf_write(struct file *file,
if (!res)
res = count;
out_unlock:
- free_page(addr);
+ kfree(buf);
return res;
}
@@ -915,16 +869,9 @@ static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
if (cnt == 0)
return 0;
- pdata = kmalloc(cnt + 1, GFP_KERNEL);
- if (pdata == NULL)
- return 0;
-
- if (copy_from_user(pdata, buf, cnt)) {
- lbs_deb_debugfs("Copy from user failed\n");
- kfree(pdata);
- return 0;
- }
- pdata[cnt] = '\0';
+ pdata = memdup_user_nul(buf, cnt);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
p0 = pdata;
for (i = 0; i < num_of_items; i++) {
diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c
index 9824d8dd2b44..241e1c3fbf08 100644
--- a/drivers/net/wireless/mwifiex/debugfs.c
+++ b/drivers/net/wireless/mwifiex/debugfs.c
@@ -447,20 +447,13 @@ static ssize_t
mwifiex_regrdwr_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *) addr;
- size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
+ char *buf;
int ret;
u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
- if (!buf)
- return -ENOMEM;
-
-
- if (copy_from_user(buf, ubuf, buf_size)) {
- ret = -EFAULT;
- goto done;
- }
+ buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
sscanf(buf, "%u %x %x", &reg_type, &reg_offset, &reg_value);
@@ -474,7 +467,7 @@ mwifiex_regrdwr_write(struct file *file,
ret = count;
}
done:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -572,17 +565,11 @@ mwifiex_debug_mask_write(struct file *file, const char __user *ubuf,
int ret;
unsigned long debug_mask;
struct mwifiex_private *priv = (void *)file->private_data;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (void *)addr;
- size_t buf_size = min(count, (size_t)(PAGE_SIZE - 1));
+ char *buf;
- if (!buf)
- return -ENOMEM;
-
- if (copy_from_user(buf, ubuf, buf_size)) {
- ret = -EFAULT;
- goto done;
- }
+ buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
if (kstrtoul(buf, 0, &debug_mask)) {
ret = -EINVAL;
@@ -592,7 +579,7 @@ mwifiex_debug_mask_write(struct file *file, const char __user *ubuf,
priv->adapter->debug_mask = debug_mask;
ret = count;
done:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -609,17 +596,11 @@ mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count,
struct mwifiex_ds_mem_rw mem_rw;
u16 cmd_action;
struct mwifiex_private *priv = (void *)file->private_data;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (void *)addr;
- size_t buf_size = min(count, (size_t)(PAGE_SIZE - 1));
-
- if (!buf)
- return -ENOMEM;
+ char *buf;
- if (copy_from_user(buf, ubuf, buf_size)) {
- ret = -EFAULT;
- goto done;
- }
+ buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
ret = sscanf(buf, "%c %x %x", &cmd, &mem_rw.addr, &mem_rw.value);
if (ret != 3) {
@@ -645,7 +626,7 @@ mwifiex_memrw_write(struct file *file, const char __user *ubuf, size_t count,
ret = count;
done:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -686,20 +667,13 @@ static ssize_t
mwifiex_rdeeprom_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *) addr;
- size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
+ char *buf;
int ret = 0;
int offset = -1, bytes = -1;
- if (!buf)
- return -ENOMEM;
-
-
- if (copy_from_user(buf, ubuf, buf_size)) {
- ret = -EFAULT;
- goto done;
- }
+ buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
sscanf(buf, "%d %d", &offset, &bytes);
@@ -712,7 +686,7 @@ mwifiex_rdeeprom_write(struct file *file,
ret = count;
}
done:
- free_page(addr);
+ kfree(buf);
return ret;
}
@@ -771,21 +745,15 @@ mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct mwifiex_private *priv = (void *)file->private_data;
- unsigned long addr = get_zeroed_page(GFP_KERNEL);
- char *buf = (char *)addr;
- size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
+ char *buf;
int ret, arg_num;
struct mwifiex_ds_hs_cfg hscfg;
int conditions = HS_CFG_COND_DEF;
u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
- if (!buf)
- return -ENOMEM;
-
- if (copy_from_user(buf, ubuf, buf_size)) {
- ret = -EFAULT;
- goto done;
- }
+ buf = memdup_user_nul(ubuf, min(count, (size_t)(PAGE_SIZE - 1)));
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
@@ -823,7 +791,7 @@ mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
priv->adapter->hs_enabling = false;
ret = count;
done:
- free_page(addr);
+ kfree(buf);
return ret;
}
diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index eb43f94a1597..be72306f8c69 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -1205,26 +1205,11 @@ err_out:
static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig)
{
- loff_t ret;
-
/* only requests of dword-aligned size and offset are supported */
if (offset % 4)
return -EINVAL;
- switch (orig) {
- case SEEK_SET:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case SEEK_CUR:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
+ return no_seek_end_llseek(file, offset, orig);
}
static const struct file_operations dev_mem_ops = {
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index 0fdedadff7bc..2a67b496a9e2 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -88,14 +88,9 @@ vmcp_write(struct file *file, const char __user *buff, size_t count,
if (count > 240)
return -EINVAL;
- cmd = kmalloc(count + 1, GFP_KERNEL);
- if (!cmd)
- return -ENOMEM;
- if (copy_from_user(cmd, buff, count)) {
- kfree(cmd);
- return -EFAULT;
- }
- cmd[count] = '\0';
+ cmd = memdup_user_nul(buff, count);
+ if (IS_ERR(cmd))
+ return PTR_ERR(cmd);
session = file->private_data;
if (mutex_lock_interruptible(&session->mutex)) {
kfree(cmd);
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index 0efb27f6f199..6c30e93ab8fa 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -782,24 +782,11 @@ static int ur_release(struct inode *inode, struct file *file)
static loff_t ur_llseek(struct file *file, loff_t offset, int whence)
{
- loff_t newpos;
-
if ((file->f_flags & O_ACCMODE) != O_RDONLY)
return -ESPIPE; /* seek allowed only for reader */
if (offset % PAGE_SIZE)
return -ESPIPE; /* only multiples of 4K allowed */
- switch (whence) {
- case 0: /* SEEK_SET */
- newpos = offset;
- break;
- case 1: /* SEEK_CUR */
- newpos = file->f_pos + offset;
- break;
- default:
- return -EINVAL;
- }
- file->f_pos = newpos;
- return newpos;
+ return no_seek_end_llseek(file, offset, whence);
}
static const struct file_operations ur_fops = {
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 823f41fc4bbd..3339b862ec17 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -385,18 +385,7 @@ static loff_t zcore_lseek(struct file *file, loff_t offset, int orig)
loff_t rc;
mutex_lock(&zcore_mutex);
- switch (orig) {
- case 0:
- file->f_pos = offset;
- rc = file->f_pos;
- break;
- case 1:
- file->f_pos += offset;
- rc = file->f_pos;
- break;
- default:
- rc = -EINVAL;
- }
+ rc = no_seek_end_llseek(file, offset, orig);
mutex_unlock(&zcore_mutex);
return rc;
}
diff --git a/drivers/sbus/char/openprom.c b/drivers/sbus/char/openprom.c
index 5843288f64bc..e077ebd89319 100644
--- a/drivers/sbus/char/openprom.c
+++ b/drivers/sbus/char/openprom.c
@@ -390,16 +390,9 @@ static int copyin_string(char __user *user, size_t len, char **ptr)
if ((ssize_t)len < 0 || (ssize_t)(len + 1) < 0)
return -EINVAL;
- tmp = kmalloc(len + 1, GFP_KERNEL);
- if (!tmp)
- return -ENOMEM;
-
- if (copy_from_user(tmp, user, len)) {
- kfree(tmp);
- return -EFAULT;
- }
-
- tmp[len] = '\0';
+ tmp = memdup_user_nul(user, len);
+ if (IS_ERR(tmp))
+ return PTR_ERR(tmp);
*ptr = tmp;
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 02f27593013e..31cd6b323a39 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -3139,7 +3139,7 @@ struct file_operations ll_file_operations_noflock = {
.lock = ll_file_noflock
};
-struct inode_operations ll_file_inode_operations = {
+const struct inode_operations ll_file_inode_operations = {
.setattr = ll_setattr,
.getattr = ll_getattr,
.permission = ll_inode_permission,
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 9096d311e45d..6102b29dbf30 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -705,7 +705,7 @@ extern const struct address_space_operations ll_aops;
extern struct file_operations ll_file_operations;
extern struct file_operations ll_file_operations_flock;
extern struct file_operations ll_file_operations_noflock;
-extern struct inode_operations ll_file_inode_operations;
+extern const struct inode_operations ll_file_inode_operations;
int ll_have_md_lock(struct inode *inode, __u64 *bits,
ldlm_mode_t l_req_mode);
ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
@@ -805,7 +805,7 @@ struct inode *search_inode_for_lustre(struct super_block *sb,
const struct lu_fid *fid);
/* llite/symlink.c */
-extern struct inode_operations ll_fast_symlink_inode_operations;
+extern const struct inode_operations ll_fast_symlink_inode_operations;
/* llite/llite_close.c */
struct ll_close_queue {
diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
index 2ca22001a534..64db5e86672f 100644
--- a/drivers/staging/lustre/lustre/llite/namei.c
+++ b/drivers/staging/lustre/lustre/llite/namei.c
@@ -126,9 +126,7 @@ struct inode *ll_iget(struct super_block *sb, ino_t hash,
rc = cl_file_inode_init(inode, md);
}
if (rc != 0) {
- make_bad_inode(inode);
- unlock_new_inode(inode);
- iput(inode);
+ iget_failed(inode);
inode = ERR_PTR(rc);
} else
unlock_new_inode(inode);
diff --git a/drivers/staging/lustre/lustre/llite/symlink.c b/drivers/staging/lustre/lustre/llite/symlink.c
index e489a3271f06..2610348f6c72 100644
--- a/drivers/staging/lustre/lustre/llite/symlink.c
+++ b/drivers/staging/lustre/lustre/llite/symlink.c
@@ -149,7 +149,7 @@ static const char *ll_get_link(struct dentry *dentry,
return symname;
}
-struct inode_operations ll_fast_symlink_inode_operations = {
+const struct inode_operations ll_fast_symlink_inode_operations = {
.readlink = generic_readlink,
.setattr = ll_setattr,
.get_link = ll_get_link,
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 2a3bbdf7eb94..cffa0a0d7de2 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -661,32 +661,8 @@ static unsigned int usb_device_poll(struct file *file,
return 0;
}
-static loff_t usb_device_lseek(struct file *file, loff_t offset, int orig)
-{
- loff_t ret;
-
- mutex_lock(&file_inode(file)->i_mutex);
-
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- case 2:
- default:
- ret = -EINVAL;
- }
-
- mutex_unlock(&file_inode(file)->i_mutex);
- return ret;
-}
-
const struct file_operations usbfs_devices_fops = {
- .llseek = usb_device_lseek,
+ .llseek = no_seek_end_llseek,
.read = usb_device_read,
.poll = usb_device_poll,
};
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 38ae877c46e3..dbc3e143453a 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -157,30 +157,6 @@ static int connected(struct usb_dev_state *ps)
ps->dev->state != USB_STATE_NOTATTACHED);
}
-static loff_t usbdev_lseek(struct file *file, loff_t offset, int orig)
-{
- loff_t ret;
-
- mutex_lock(&file_inode(file)->i_mutex);
-
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- case 2:
- default:
- ret = -EINVAL;
- }
-
- mutex_unlock(&file_inode(file)->i_mutex);
- return ret;
-}
-
static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
@@ -2366,7 +2342,7 @@ static unsigned int usbdev_poll(struct file *file,
const struct file_operations usbdev_file_operations = {
.owner = THIS_MODULE,
- .llseek = usbdev_lseek,
+ .llseek = no_seek_end_llseek,
.read = usbdev_read,
.poll = usbdev_poll,
.unlocked_ioctl = usbdev_ioctl,
diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index 1b28a000d5c6..9c6635d43db0 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -584,27 +584,8 @@ static int uhci_debug_open(struct inode *inode, struct file *file)
static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence)
{
- struct uhci_debug *up;
- loff_t new = -1;
-
- up = file->private_data;
-
- /*
- * XXX: atomic 64bit seek access, but that needs to be fixed in the VFS
- */
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- }
-
- if (new < 0 || new > up->size)
- return -EINVAL;
-
- return (file->f_pos = new);
+ struct uhci_debug *up = file->private_data;
+ return no_seek_end_llseek_size(file, off, whence, up->size);
}
static ssize_t uhci_debug_read(struct file *file, char __user *buf,
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 306d6852ebc7..8efbabacc84e 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -2825,21 +2825,7 @@ sisusb_lseek(struct file *file, loff_t offset, int orig)
return -ENODEV;
}
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- /* never negative, no force_successful_syscall needed */
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- /* never negative, no force_successful_syscall needed */
- break;
- default:
- /* seeking relative to "end of file" is not supported */
- ret = -EINVAL;
- }
+ ret = no_seek_end_llseek(file, offset, orig);
mutex_unlock(&sisusb->lock);
return ret;
diff --git a/fs/9p/cache.c b/fs/9p/cache.c
index a69260f27555..103ca5e1267b 100644
--- a/fs/9p/cache.c
+++ b/fs/9p/cache.c
@@ -243,14 +243,14 @@ void v9fs_cache_inode_set_cookie(struct inode *inode, struct file *filp)
if (!v9inode->fscache)
return;
- spin_lock(&v9inode->fscache_lock);
+ mutex_lock(&v9inode->fscache_lock);
if ((filp->f_flags & O_ACCMODE) != O_RDONLY)
v9fs_cache_inode_flush_cookie(inode);
else
v9fs_cache_inode_get_cookie(inode);
- spin_unlock(&v9inode->fscache_lock);
+ mutex_unlock(&v9inode->fscache_lock);
}
void v9fs_cache_inode_reset_cookie(struct inode *inode)
@@ -264,7 +264,7 @@ void v9fs_cache_inode_reset_cookie(struct inode *inode)
old = v9inode->fscache;
- spin_lock(&v9inode->fscache_lock);
+ mutex_lock(&v9inode->fscache_lock);
fscache_relinquish_cookie(v9inode->fscache, 1);
v9ses = v9fs_inode2v9ses(inode);
@@ -274,7 +274,7 @@ void v9fs_cache_inode_reset_cookie(struct inode *inode)
p9_debug(P9_DEBUG_FSC, "inode %p revalidating cookie old %p new %p\n",
inode, old, v9inode->fscache);
- spin_unlock(&v9inode->fscache_lock);
+ mutex_unlock(&v9inode->fscache_lock);
}
int __v9fs_fscache_release_page(struct page *page, gfp_t gfp)
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 0923f2cf3c80..6877050384a1 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -123,7 +123,7 @@ struct v9fs_session_info {
struct v9fs_inode {
#ifdef CONFIG_9P_FSCACHE
- spinlock_t fscache_lock;
+ struct mutex fscache_lock;
struct fscache_cookie *fscache;
#endif
struct p9_qid qid;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index c7cc7c30f0c8..3a08b3e6ff1d 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -244,7 +244,7 @@ struct inode *v9fs_alloc_inode(struct super_block *sb)
return NULL;
#ifdef CONFIG_9P_FSCACHE
v9inode->fscache = NULL;
- spin_lock_init(&v9inode->fscache_lock);
+ mutex_init(&v9inode->fscache_lock);
#endif
v9inode->writeback_fid = NULL;
v9inode->cache_validity = 0;
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 24575d9d882d..ea4aba56f29d 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -45,7 +45,7 @@ struct adfs_dir_ops;
struct adfs_sb_info {
union { struct {
struct adfs_discmap *s_map; /* bh list containing map */
- struct adfs_dir_ops *s_dir; /* directory operations */
+ const struct adfs_dir_ops *s_dir; /* directory operations */
};
struct rcu_head rcu; /* used only at shutdown time */
};
@@ -168,8 +168,8 @@ void __adfs_error(struct super_block *sb, const char *function,
extern const struct inode_operations adfs_dir_inode_operations;
extern const struct file_operations adfs_dir_operations;
extern const struct dentry_operations adfs_dentry_operations;
-extern struct adfs_dir_ops adfs_f_dir_ops;
-extern struct adfs_dir_ops adfs_fplus_dir_ops;
+extern const struct adfs_dir_ops adfs_f_dir_ops;
+extern const struct adfs_dir_ops adfs_fplus_dir_ops;
extern int adfs_dir_update(struct super_block *sb, struct object_info *obj,
int wait);
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 51c279a29845..fd4cf2c48e48 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -21,7 +21,7 @@ adfs_readdir(struct file *file, struct dir_context *ctx)
{
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
- struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+ const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct object_info obj;
struct adfs_dir dir;
int ret = 0;
@@ -69,7 +69,7 @@ adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
{
int ret = -EINVAL;
#ifdef CONFIG_ADFS_FS_RW
- struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+ const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct adfs_dir dir;
printk(KERN_INFO "adfs_dir_update: object %06X in dir %06X\n",
@@ -129,7 +129,7 @@ static int
adfs_dir_lookup_byname(struct inode *inode, struct qstr *name, struct object_info *obj)
{
struct super_block *sb = inode->i_sb;
- struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
+ const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct adfs_dir dir;
int ret;
diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index 4bbe853ee50a..0fbfd0b04ae0 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -476,7 +476,7 @@ adfs_f_free(struct adfs_dir *dir)
dir->sb = NULL;
}
-struct adfs_dir_ops adfs_f_dir_ops = {
+const struct adfs_dir_ops adfs_f_dir_ops = {
.read = adfs_f_read,
.setpos = adfs_f_setpos,
.getnext = adfs_f_getnext,
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index 82d14cdf70f9..c92cfb638c18 100644
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -256,7 +256,7 @@ adfs_fplus_free(struct adfs_dir *dir)
dir->sb = NULL;
}
-struct adfs_dir_ops adfs_fplus_dir_ops = {
+const struct adfs_dir_ops adfs_fplus_dir_ops = {
.read = adfs_fplus_read,
.setpos = adfs_fplus_setpos,
.getnext = adfs_fplus_getnext,
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index c69a87eaf57d..cc2b2efc9211 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -138,7 +138,7 @@ extern int affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh);
extern int affs_remove_header(struct dentry *dentry);
extern u32 affs_checksum_block(struct super_block *sb, struct buffer_head *bh);
extern void affs_fix_checksum(struct super_block *sb, struct buffer_head *bh);
-extern void secs_to_datestamp(time_t secs, struct affs_date *ds);
+extern void secs_to_datestamp(time64_t secs, struct affs_date *ds);
extern umode_t prot_to_mode(u32 prot);
extern void mode_to_prot(struct inode *inode);
__printf(3, 4)
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 5fa92bc790ef..d6c7a51c93e4 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -8,6 +8,7 @@
* Please send bug reports to: hjw@zvw.de
*/
+#include <linux/math64.h>
#include "affs.h"
/*
@@ -366,22 +367,22 @@ affs_fix_checksum(struct super_block *sb, struct buffer_head *bh)
}
void
-secs_to_datestamp(time_t secs, struct affs_date *ds)
+secs_to_datestamp(time64_t secs, struct affs_date *ds)
{
u32 days;
u32 minute;
+ s32 rem;
secs -= sys_tz.tz_minuteswest * 60 + ((8 * 365 + 2) * 24 * 60 * 60);
if (secs < 0)
secs = 0;
- days = secs / 86400;
- secs -= days * 86400;
- minute = secs / 60;
- secs -= minute * 60;
+ days = div_s64_rem(secs, 86400, &rem);
+ minute = rem / 60;
+ rem -= minute * 60;
ds->days = cpu_to_be32(days);
ds->mins = cpu_to_be32(minute);
- ds->ticks = cpu_to_be32(secs * 50);
+ ds->ticks = cpu_to_be32(rem * 50);
}
umode_t
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 5b50c4ca43a7..8836df5f1e11 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -32,7 +32,7 @@ affs_commit_super(struct super_block *sb, int wait)
struct affs_root_tail *tail = AFFS_ROOT_TAIL(sb, bh);
lock_buffer(bh);
- secs_to_datestamp(get_seconds(), &tail->disk_change);
+ secs_to_datestamp(ktime_get_real_seconds(), &tail->disk_change);
affs_fix_checksum(sb, bh);
unlock_buffer(bh);
diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 24a905b076fd..2853b4095344 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -230,14 +230,9 @@ static ssize_t afs_proc_cells_write(struct file *file, const char __user *buf,
if (size <= 1 || size >= PAGE_SIZE)
return -EINVAL;
- kbuf = kmalloc(size + 1, GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
-
- ret = -EFAULT;
- if (copy_from_user(kbuf, buf, size) != 0)
- goto done;
- kbuf[size] = 0;
+ kbuf = memdup_user_nul(buf, size);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
/* trim to first NL */
name = memchr(kbuf, '\n', size);
@@ -315,15 +310,9 @@ static ssize_t afs_proc_rootcell_write(struct file *file,
if (size <= 1 || size >= PAGE_SIZE)
return -EINVAL;
- ret = -ENOMEM;
- kbuf = kmalloc(size + 1, GFP_KERNEL);
- if (!kbuf)
- goto nomem;
-
- ret = -EFAULT;
- if (copy_from_user(kbuf, buf, size) != 0)
- goto infault;
- kbuf[size] = 0;
+ kbuf = memdup_user_nul(buf, size);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
/* trim to first NL */
s = memchr(kbuf, '\n', size);
@@ -337,9 +326,7 @@ static ssize_t afs_proc_rootcell_write(struct file *file,
if (ret >= 0)
ret = size; /* consume everything, always */
-infault:
kfree(kbuf);
-nomem:
_leave(" = %d", ret);
return ret;
}
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 861b1e1c4777..103f5d7c3083 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -192,7 +192,7 @@ EXPORT_SYMBOL(make_bad_inode);
* Returns true if the inode in question has been marked as bad.
*/
-int is_bad_inode(struct inode *inode)
+bool is_bad_inode(struct inode *inode)
{
return (inode->i_op == &bad_inode_ops);
}
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 44d4a1e9244e..01b8e0d4b4ff 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1042,12 +1042,9 @@ EXPORT_SYMBOL_GPL(bd_unlink_disk_holder);
static void flush_disk(struct block_device *bdev, bool kill_dirty)
{
if (__invalidate_device(bdev, kill_dirty)) {
- char name[BDEVNAME_SIZE] = "";
-
- if (bdev->bd_disk)
- disk_name(bdev->bd_disk, 0, name);
printk(KERN_WARNING "VFS: busy inodes on changed media or "
- "resized disk %s\n", name);
+ "resized disk %s\n",
+ bdev->bd_disk ? bdev->bd_disk->disk_name : "");
}
if (!bdev->bd_disk)
@@ -1071,12 +1068,9 @@ void check_disk_size_change(struct gendisk *disk, struct block_device *bdev)
disk_size = (loff_t)get_capacity(disk) << 9;
bdev_size = i_size_read(bdev->bd_inode);
if (disk_size != bdev_size) {
- char name[BDEVNAME_SIZE];
-
- disk_name(disk, 0, name);
printk(KERN_INFO
"%s: detected capacity change from %lld to %lld\n",
- name, bdev_size, disk_size);
+ disk->disk_name, bdev_size, disk_size);
i_size_write(bdev->bd_inode, disk_size);
flush_disk(bdev, false);
}
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 24154e422945..a0434c179ea9 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1514,9 +1514,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
if ((flags ^ s->s_flags) & MS_RDONLY)
error = -EBUSY;
} else {
- char b[BDEVNAME_SIZE];
-
- strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
+ snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
btrfs_sb(s)->bdev_holder = fs_type;
error = btrfs_fill_super(s, fs_devices, data,
flags & MS_SILENT ? 1 : 0);
diff --git a/fs/buffer.c b/fs/buffer.c
index 4f4cd959da7c..e1632abb4ca9 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -134,13 +134,10 @@ __clear_page_buffers(struct page *page)
static void buffer_io_error(struct buffer_head *bh, char *msg)
{
- char b[BDEVNAME_SIZE];
-
if (!test_bit(BH_Quiet, &bh->b_state))
printk_ratelimited(KERN_ERR
- "Buffer I/O error on dev %s, logical block %llu%s\n",
- bdevname(bh->b_bdev, b),
- (unsigned long long)bh->b_blocknr, msg);
+ "Buffer I/O error on dev %pg, logical block %llu%s\n",
+ bh->b_bdev, (unsigned long long)bh->b_blocknr, msg);
}
/*
@@ -237,15 +234,13 @@ __find_get_block_slow(struct block_device *bdev, sector_t block)
* elsewhere, don't buffer_error if we had some unmapped buffers
*/
if (all_mapped) {
- char b[BDEVNAME_SIZE];
-
printk("__find_get_block_slow() failed. "
"block=%llu, b_blocknr=%llu\n",
(unsigned long long)block,
(unsigned long long)bh->b_blocknr);
printk("b_state=0x%08lx, b_size=%zu\n",
bh->b_state, bh->b_size);
- printk("device %s blocksize: %d\n", bdevname(bdev, b),
+ printk("device %pg blocksize: %d\n", bdev,
1 << bd_inode->i_blkbits);
}
out_unlock:
@@ -531,10 +526,8 @@ repeat:
static void do_thaw_one(struct super_block *sb, void *unused)
{
- char b[BDEVNAME_SIZE];
while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
- printk(KERN_WARNING "Emergency Thaw on %s\n",
- bdevname(sb->s_bdev, b));
+ printk(KERN_WARNING "Emergency Thaw on %pg\n", sb->s_bdev);
}
static void do_thaw_all(struct work_struct *work)
@@ -1074,12 +1067,10 @@ grow_buffers(struct block_device *bdev, sector_t block, int size, gfp_t gfp)
* pagecache index. (this comparison is done using sector_t types).
*/
if (unlikely(index != block >> sizebits)) {
- char b[BDEVNAME_SIZE];
-
printk(KERN_ERR "%s: requested out-of-range block %llu for "
- "device %s\n",
+ "device %pg\n",
__func__, (unsigned long long)block,
- bdevname(bdev, b));
+ bdev);
return -EIO;
}
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index f601def05bdf..452e98dd7560 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -226,15 +226,9 @@ static ssize_t cachefiles_daemon_write(struct file *file,
return -EOPNOTSUPP;
/* drag the command string into the kernel so we can parse it */
- data = kmalloc(datalen + 1, GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- ret = -EFAULT;
- if (copy_from_user(data, _data, datalen) != 0)
- goto error;
-
- data[datalen] = '\0';
+ data = memdup_user_nul(_data, datalen);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
ret = -EINVAL;
if (memchr(data, '\0', datalen))
diff --git a/fs/compat.c b/fs/compat.c
index 6fd272d455e4..a71936a3f4cb 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -792,7 +792,7 @@ COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name,
const void __user *, data)
{
char *kernel_type;
- unsigned long data_page;
+ void *options;
char *kernel_dev;
int retval;
@@ -806,26 +806,25 @@ COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name,
if (IS_ERR(kernel_dev))
goto out1;
- retval = copy_mount_options(data, &data_page);
- if (retval < 0)
+ options = copy_mount_options(data);
+ retval = PTR_ERR(options);
+ if (IS_ERR(options))
goto out2;
- retval = -EINVAL;
-
- if (kernel_type && data_page) {
+ if (kernel_type && options) {
if (!strcmp(kernel_type, NCPFS_NAME)) {
- do_ncp_super_data_conv((void *)data_page);
+ do_ncp_super_data_conv(options);
} else if (!strcmp(kernel_type, NFS4_NAME)) {
- if (do_nfs4_super_data_conv((void *) data_page))
+ retval = -EINVAL;
+ if (do_nfs4_super_data_conv(options))
goto out3;
}
}
- retval = do_mount(kernel_dev, dir_name, kernel_type,
- flags, (void*)data_page);
+ retval = do_mount(kernel_dev, dir_name, kernel_type, flags, options);
out3:
- free_page(data_page);
+ kfree(options);
out2:
kfree(kernel_dev);
out1:
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 647ee0b03dc0..a5b8eb69a8f4 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1305,12 +1305,6 @@ COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
-/* NBD */
-COMPATIBLE_IOCTL(NBD_DO_IT)
-COMPATIBLE_IOCTL(NBD_CLEAR_SOCK)
-COMPATIBLE_IOCTL(NBD_CLEAR_QUE)
-COMPATIBLE_IOCTL(NBD_PRINT_DEBUG)
-COMPATIBLE_IOCTL(NBD_DISCONNECT)
/* i2c */
COMPATIBLE_IOCTL(I2C_SLAVE)
COMPATIBLE_IOCTL(I2C_SLAVE_FORCE)
@@ -1529,11 +1523,6 @@ static long do_ioctl_trans(unsigned int cmd,
case KDSKBMETA:
case KDSKBLED:
case KDSETLED:
- /* NBD */
- case NBD_SET_SOCK:
- case NBD_SET_BLKSIZE:
- case NBD_SET_SIZE:
- case NBD_SET_SIZE_BLOCKS:
return vfs_ioctl(file, cmd, arg);
}
diff --git a/fs/coredump.c b/fs/coredump.c
index 1777331eee76..b3c153ca435d 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -32,6 +32,7 @@
#include <linux/pipe_fs_i.h>
#include <linux/oom.h>
#include <linux/compat.h>
+#include <linux/timekeeping.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
@@ -232,9 +233,10 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
break;
/* UNIX time of coredump */
case 't': {
- struct timeval tv;
- do_gettimeofday(&tv);
- err = cn_printf(cn, "%lu", tv.tv_sec);
+ time64_t time;
+
+ time = ktime_get_real_seconds();
+ err = cn_printf(cn, "%lld", time);
break;
}
/* hostname */
diff --git a/fs/dcache.c b/fs/dcache.c
index d27f0909d9f6..8d38cd07b207 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3303,18 +3303,18 @@ out:
* @new_dentry: new dentry
* @old_dentry: old dentry
*
- * Returns 1 if new_dentry is a subdirectory of the parent (at any depth).
- * Returns 0 otherwise.
+ * Returns true if new_dentry is a subdirectory of the parent (at any depth).
+ * Returns false otherwise.
* Caller must ensure that "new_dentry" is pinned before calling is_subdir()
*/
-int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
+bool is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
{
- int result;
+ bool result;
unsigned seq;
if (new_dentry == old_dentry)
- return 1;
+ return true;
do {
/* for restarting inner loop in case of seq retry */
@@ -3325,9 +3325,9 @@ int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
*/
rcu_read_lock();
if (d_ancestor(old_dentry, new_dentry))
- result = 1;
+ result = true;
else
- result = 0;
+ result = false;
rcu_read_unlock();
} while (read_seqretry(&rename_lock, seq));
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index 173b3873a4f4..1925d6d222b8 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -515,14 +515,9 @@ static ssize_t device_write(struct file *file, const char __user *buf,
if (count > sizeof(struct dlm_write_request) + DLM_RESNAME_MAXLEN)
return -EINVAL;
- kbuf = kzalloc(count + 1, GFP_NOFS);
- if (!kbuf)
- return -ENOMEM;
-
- if (copy_from_user(kbuf, buf, count)) {
- error = -EFAULT;
- goto out_free;
- }
+ kbuf = memdup_user_nul(buf, count);
+ if (!IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
if (check_version(kbuf)) {
error = -EBADE;
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index a4dddc61594c..040aa879d634 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -282,9 +282,7 @@ ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
if (rc) {
ecryptfs_do_unlink(directory_inode, ecryptfs_dentry,
ecryptfs_inode);
- make_bad_inode(ecryptfs_inode);
- unlock_new_inode(ecryptfs_inode);
- iput(ecryptfs_inode);
+ iget_failed(ecryptfs_inode);
goto out;
}
unlock_new_inode(ecryptfs_inode);
diff --git a/fs/exec.c b/fs/exec.c
index b06623a9347f..828ec5f07de0 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -119,7 +119,7 @@ SYSCALL_DEFINE1(uselib, const char __user *, library)
int error = PTR_ERR(tmp);
static const struct open_flags uselib_flags = {
.open_flag = O_LARGEFILE | O_RDONLY | __FMODE_EXEC,
- .acc_mode = MAY_READ | MAY_EXEC | MAY_OPEN,
+ .acc_mode = MAY_READ | MAY_EXEC,
.intent = LOOKUP_OPEN,
.lookup_flags = LOOKUP_FOLLOW,
};
@@ -763,7 +763,7 @@ static struct file *do_open_execat(int fd, struct filename *name, int flags)
int err;
struct open_flags open_exec_flags = {
.open_flag = O_LARGEFILE | O_RDONLY | __FMODE_EXEC,
- .acc_mode = MAY_EXEC | MAY_OPEN,
+ .acc_mode = MAY_EXEC,
.intent = LOOKUP_OPEN,
.lookup_flags = LOOKUP_FOLLOW,
};
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index cd95d14f9cc2..f57a7aba32eb 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -77,10 +77,8 @@
printk("\n"); \
} while (0)
# define ea_bdebug(bh, f...) do { \
- char b[BDEVNAME_SIZE]; \
- printk(KERN_DEBUG "block %s:%lu: ", \
- bdevname(bh->b_bdev, b), \
- (unsigned long) bh->b_blocknr); \
+ printk(KERN_DEBUG "block %pg:%lu: ", \
+ bh->b_bdev, (unsigned long) bh->b_blocknr); \
printk(f); \
printk("\n"); \
} while (0)
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 17fbe3882b8e..090b3498638e 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -52,9 +52,8 @@ void ext4_exit_pageio(void)
*/
static void buffer_io_error(struct buffer_head *bh)
{
- char b[BDEVNAME_SIZE];
- printk_ratelimited(KERN_ERR "Buffer I/O error on device %s, logical block %llu\n",
- bdevname(bh->b_bdev, b),
+ printk_ratelimited(KERN_ERR "Buffer I/O error on device %pg, logical block %llu\n",
+ bh->b_bdev,
(unsigned long long)bh->b_blocknr);
}
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index e9b9afdd1d96..a95151e875bd 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -68,10 +68,8 @@
printk("\n"); \
} while (0)
# define ea_bdebug(bh, f...) do { \
- char b[BDEVNAME_SIZE]; \
- printk(KERN_DEBUG "block %s:%lu: ", \
- bdevname(bh->b_bdev, b), \
- (unsigned long) bh->b_blocknr); \
+ printk(KERN_DEBUG "block %pg:%lu: ", \
+ bh->b_bdev, (unsigned long) bh->b_blocknr); \
printk(f); \
printk("\n"); \
} while (0)
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 478e5d54154f..ad1b18a7705b 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -211,12 +211,10 @@ static int stat_show(struct seq_file *s, void *v)
mutex_lock(&f2fs_stat_mutex);
list_for_each_entry(si, &f2fs_stat_list, stat_list) {
- char devname[BDEVNAME_SIZE];
-
update_general_status(si->sbi);
- seq_printf(s, "\n=====[ partition info(%s). #%d ]=====\n",
- bdevname(si->sbi->sb->s_bdev, devname), i++);
+ seq_printf(s, "\n=====[ partition info(%pg). #%d ]=====\n",
+ si->sbi->sb->s_bdev, i++);
seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
si->sit_area_segs, si->nat_area_segs);
seq_printf(s, "[SSA: %d] [MAIN: %d",
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 9db5500d63d9..ec6067c33a3f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1602,13 +1602,11 @@ static inline bool is_dot_dotdot(const struct qstr *str)
static inline bool f2fs_may_extent_tree(struct inode *inode)
{
- mode_t mode = inode->i_mode;
-
if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
return false;
- return S_ISREG(mode);
+ return S_ISREG(inode->i_mode);
}
static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
@@ -2121,7 +2119,7 @@ static inline int f2fs_sb_has_crypto(struct super_block *sb)
static inline bool f2fs_may_encrypt(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
- mode_t mode = inode->i_mode;
+ umode_t mode = inode->i_mode;
return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
#else
diff --git a/fs/fcntl.c b/fs/fcntl.c
index ee85cd4e136a..350a2c8cfd28 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -51,7 +51,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
if (arg & O_NDELAY)
arg |= O_NONBLOCK;
- if (arg & O_DIRECT) {
+ /* Pipe packetized mode is controlled by O_DIRECT flag */
+ if (!S_ISFIFO(filp->f_inode->i_mode) && (arg & O_DIRECT)) {
if (!filp->f_mapping || !filp->f_mapping->a_ops ||
!filp->f_mapping->a_ops->direct_IO)
return -EINVAL;
diff --git a/fs/file.c b/fs/file.c
index 39f8f15921da..1aed0add16a2 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -25,9 +25,9 @@
int sysctl_nr_open __read_mostly = 1024*1024;
int sysctl_nr_open_min = BITS_PER_LONG;
-/* our max() is unusable in constant expressions ;-/ */
-#define __const_max(x, y) ((x) < (y) ? (x) : (y))
-int sysctl_nr_open_max = __const_max(INT_MAX, ~(size_t)0/sizeof(void *)) &
+/* our min() is unusable in constant expressions ;-/ */
+#define __const_min(x, y) ((x) < (y) ? (x) : (y))
+int sysctl_nr_open_max = __const_min(INT_MAX, ~(size_t)0/sizeof(void *)) &
-BITS_PER_LONG;
static void *alloc_fdmem(size_t size)
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index baab99b69d8a..001c66641243 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1315,9 +1315,7 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
if ((flags ^ s->s_flags) & MS_RDONLY)
goto error_super;
} else {
- char b[BDEVNAME_SIZE];
-
- strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
+ snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
sb_set_blocksize(s, block_size(bdev));
error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0);
if (error)
diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
index aa3f0d6d043c..a3ec3ae7d347 100644
--- a/fs/hfs/mdb.c
+++ b/fs/hfs/mdb.c
@@ -166,7 +166,7 @@ int hfs_mdb_get(struct super_block *sb)
pr_warn("continuing without an alternate MDB\n");
}
- HFS_SB(sb)->bitmap = (__be32 *)__get_free_pages(GFP_KERNEL, PAGE_SIZE < 8192 ? 1 : 0);
+ HFS_SB(sb)->bitmap = kmalloc(8192, GFP_KERNEL);
if (!HFS_SB(sb)->bitmap)
goto out;
@@ -360,7 +360,7 @@ void hfs_mdb_put(struct super_block *sb)
unload_nls(HFS_SB(sb)->nls_io);
unload_nls(HFS_SB(sb)->nls_disk);
- free_pages((unsigned long)HFS_SB(sb)->bitmap, PAGE_SIZE < 8192 ? 1 : 0);
+ kfree(HFS_SB(sb)->bitmap);
kfree(HFS_SB(sb));
sb->s_fs_info = NULL;
}
diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c
index a69bbc1e87f8..a136929189f0 100644
--- a/fs/hpfs/map.c
+++ b/fs/hpfs/map.c
@@ -133,7 +133,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp)
void hpfs_load_hotfix_map(struct super_block *s, struct hpfs_spare_block *spareblock)
{
struct quad_buffer_head qbh;
- u32 *directory;
+ __le32 *directory;
u32 n_hotfixes, n_used_hotfixes;
unsigned i;
diff --git a/fs/internal.h b/fs/internal.h
index e38c08ca437d..b71deeecea17 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -55,7 +55,7 @@ extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
/*
* namespace.c
*/
-extern int copy_mount_options(const void __user *, unsigned long *);
+extern void *copy_mount_options(const void __user *);
extern char *copy_mount_string(const void __user *);
extern struct vfsmount *lookup_mnt(struct path *);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index ca181e81c765..081dff087fc0 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -764,13 +764,11 @@ void jbd2_journal_unlock_updates (journal_t *journal)
static void warn_dirty_buffer(struct buffer_head *bh)
{
- char b[BDEVNAME_SIZE];
-
printk(KERN_WARNING
- "JBD2: Spotted dirty metadata buffer (dev = %s, blocknr = %llu). "
+ "JBD2: Spotted dirty metadata buffer (dev = %pg, blocknr = %llu). "
"There's a risk of filesystem corruption in case of system "
"crash.\n",
- bdevname(bh->b_bdev, b), (unsigned long long)bh->b_blocknr);
+ bh->b_bdev, (unsigned long long)bh->b_blocknr);
}
/* Call t_frozen trigger and copy buffer data into jh->b_frozen_data. */
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index a69bdf2a1085..a270cb7ff4e0 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -1835,17 +1835,16 @@ static int lbmLogInit(struct jfs_log * log)
for (i = 0; i < LOGPAGES;) {
char *buffer;
uint offset;
- struct page *page;
+ struct page *page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- buffer = (char *) get_zeroed_page(GFP_KERNEL);
- if (buffer == NULL)
+ if (!page)
goto error;
- page = virt_to_page(buffer);
+ buffer = page_address(page);
for (offset = 0; offset < PAGE_SIZE; offset += LOGPSIZE) {
lbuf = kmalloc(sizeof(struct lbuf), GFP_KERNEL);
if (lbuf == NULL) {
if (offset == 0)
- free_page((unsigned long) buffer);
+ __free_page(page);
goto error;
}
if (offset) /* we already have one reference */
diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index 209a26d84c38..39d91f86cd35 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -302,7 +302,7 @@ struct logfs_block {
struct inode *inode;
struct logfs_transaction *ta;
unsigned long alias_map[LOGFS_BLOCK_FACTOR / BITS_PER_LONG];
- struct logfs_block_ops *ops;
+ const struct logfs_block_ops *ops;
int full;
int partial;
int reserved_bytes;
@@ -578,7 +578,7 @@ int logfs_exist_block(struct inode *inode, u64 bix);
int get_page_reserve(struct inode *inode, struct page *page);
void logfs_get_wblocks(struct super_block *sb, struct page *page, int lock);
void logfs_put_wblocks(struct super_block *sb, struct page *page, int lock);
-extern struct logfs_block_ops indirect_block_ops;
+extern const struct logfs_block_ops indirect_block_ops;
/* segment.c */
int logfs_erase_segment(struct super_block *sb, u32 ofs, int ensure_erase);
diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index 380d86e1ab45..20973c9e52f8 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -569,13 +569,13 @@ static void indirect_free_block(struct super_block *sb,
}
-static struct logfs_block_ops inode_block_ops = {
+static const struct logfs_block_ops inode_block_ops = {
.write_block = inode_write_block,
.free_block = inode_free_block,
.write_alias = inode_write_alias,
};
-struct logfs_block_ops indirect_block_ops = {
+const struct logfs_block_ops indirect_block_ops = {
.write_block = indirect_write_block,
.free_block = indirect_free_block,
.write_alias = indirect_write_alias,
diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c
index 6de0fbfc6c00..d270e4b2ab6b 100644
--- a/fs/logfs/segment.c
+++ b/fs/logfs/segment.c
@@ -197,7 +197,7 @@ static int btree_write_alias(struct super_block *sb, struct logfs_block *block,
return 0;
}
-static struct logfs_block_ops btree_block_ops = {
+static const struct logfs_block_ops btree_block_ops = {
.write_block = btree_write_block,
.free_block = __free_block,
.write_alias = btree_write_alias,
diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c
index 282e15ad8cd8..46ca39d6c735 100644
--- a/fs/minix/itree_v1.c
+++ b/fs/minix/itree_v1.c
@@ -24,16 +24,15 @@ static inline block_t *i_data(struct inode *inode)
static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
{
int n = 0;
- char b[BDEVNAME_SIZE];
if (block < 0) {
- printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
- block, bdevname(inode->i_sb->s_bdev, b));
+ printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
+ block, inode->i_sb->s_bdev);
} else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) {
if (printk_ratelimit())
printk("MINIX-fs: block_to_path: "
- "block %ld too big on dev %s\n",
- block, bdevname(inode->i_sb->s_bdev, b));
+ "block %ld too big on dev %pg\n",
+ block, inode->i_sb->s_bdev);
} else if (block < 7) {
offsets[n++] = block;
} else if ((block -= 7) < 512) {
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index 78e2d93e5c83..1ee101352586 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -26,18 +26,17 @@ static inline block_t *i_data(struct inode *inode)
static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
{
int n = 0;
- char b[BDEVNAME_SIZE];
struct super_block *sb = inode->i_sb;
if (block < 0) {
- printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
- block, bdevname(sb->s_bdev, b));
+ printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
+ block, sb->s_bdev);
} else if ((u64)block * (u64)sb->s_blocksize >=
minix_sb(sb)->s_max_size) {
if (printk_ratelimit())
printk("MINIX-fs: block_to_path: "
- "block %ld too big on dev %s\n",
- block, bdevname(sb->s_bdev, b));
+ "block %ld too big on dev %pg\n",
+ block, sb->s_bdev);
} else if (block < DIRCOUNT) {
offsets[n++] = block;
} else if ((block -= DIRCOUNT) < INDIRCOUNT(sb)) {
diff --git a/fs/namei.c b/fs/namei.c
index 3c909aebef70..bceefd5588a2 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -534,10 +534,8 @@ static void restore_nameidata(void)
current->nameidata = old;
if (old)
old->total_link_count = now->total_link_count;
- if (now->stack != now->internal) {
+ if (now->stack != now->internal)
kfree(now->stack);
- now->stack = now->internal;
- }
}
static int __nd_alloc_stack(struct nameidata *nd)
@@ -654,7 +652,7 @@ static bool legitimize_links(struct nameidata *nd)
* Path walking has 2 modes, rcu-walk and ref-walk (see
* Documentation/filesystems/path-lookup.txt). In situations when we can't
* continue in RCU mode, we attempt to drop out of rcu-walk mode and grab
- * normal reference counts on dentries and vfsmounts to transition to rcu-walk
+ * normal reference counts on dentries and vfsmounts to transition to ref-walk
* mode. Refcounts are grabbed at the last known good point before rcu-walk
* got stuck, so ref-walk may continue from there. If this is not successful
* (eg. a seqcount has changed), then failure is returned and it's up to caller
@@ -804,19 +802,19 @@ static int complete_walk(struct nameidata *nd)
static void set_root(struct nameidata *nd)
{
- get_fs_root(current->fs, &nd->root);
-}
-
-static void set_root_rcu(struct nameidata *nd)
-{
struct fs_struct *fs = current->fs;
- unsigned seq;
- do {
- seq = read_seqcount_begin(&fs->seq);
- nd->root = fs->root;
- nd->root_seq = __read_seqcount_begin(&nd->root.dentry->d_seq);
- } while (read_seqcount_retry(&fs->seq, seq));
+ if (nd->flags & LOOKUP_RCU) {
+ unsigned seq;
+
+ do {
+ seq = read_seqcount_begin(&fs->seq);
+ nd->root = fs->root;
+ nd->root_seq = __read_seqcount_begin(&nd->root.dentry->d_seq);
+ } while (read_seqcount_retry(&fs->seq, seq));
+ } else {
+ get_fs_root(fs, &nd->root);
+ }
}
static void path_put_conditional(struct path *path, struct nameidata *nd)
@@ -838,6 +836,26 @@ static inline void path_to_nameidata(const struct path *path,
nd->path.dentry = path->dentry;
}
+static int nd_jump_root(struct nameidata *nd)
+{
+ if (nd->flags & LOOKUP_RCU) {
+ struct dentry *d;
+ nd->path = nd->root;
+ d = nd->path.dentry;
+ nd->inode = d->d_inode;
+ nd->seq = nd->root_seq;
+ if (unlikely(read_seqcount_retry(&d->d_seq, nd->seq)))
+ return -ECHILD;
+ } else {
+ path_put(&nd->path);
+ nd->path = nd->root;
+ path_get(&nd->path);
+ nd->inode = nd->path.dentry->d_inode;
+ }
+ nd->flags |= LOOKUP_JUMPED;
+ return 0;
+}
+
/*
* Helper to directly jump to a known parsed path from ->get_link,
* caller must have taken a reference to path beforehand.
@@ -1016,25 +1034,10 @@ const char *get_link(struct nameidata *nd)
return res;
}
if (*res == '/') {
- if (nd->flags & LOOKUP_RCU) {
- struct dentry *d;
- if (!nd->root.mnt)
- set_root_rcu(nd);
- nd->path = nd->root;
- d = nd->path.dentry;
- nd->inode = d->d_inode;
- nd->seq = nd->root_seq;
- if (unlikely(read_seqcount_retry(&d->d_seq, nd->seq)))
- return ERR_PTR(-ECHILD);
- } else {
- if (!nd->root.mnt)
- set_root(nd);
- path_put(&nd->path);
- nd->path = nd->root;
- path_get(&nd->root);
- nd->inode = nd->path.dentry->d_inode;
- }
- nd->flags |= LOOKUP_JUMPED;
+ if (!nd->root.mnt)
+ set_root(nd);
+ if (unlikely(nd_jump_root(nd)))
+ return ERR_PTR(-ECHILD);
while (unlikely(*++res == '/'))
;
}
@@ -1295,8 +1298,6 @@ static bool __follow_mount_rcu(struct nameidata *nd, struct path *path,
static int follow_dotdot_rcu(struct nameidata *nd)
{
struct inode *inode = nd->inode;
- if (!nd->root.mnt)
- set_root_rcu(nd);
while (1) {
if (path_equal(&nd->path, &nd->root))
@@ -1416,9 +1417,6 @@ static void follow_mount(struct path *path)
static int follow_dotdot(struct nameidata *nd)
{
- if (!nd->root.mnt)
- set_root(nd);
-
while(1) {
struct dentry *old = nd->path.dentry;
@@ -1656,6 +1654,8 @@ static inline int may_lookup(struct nameidata *nd)
static inline int handle_dots(struct nameidata *nd, int type)
{
if (type == LAST_DOTDOT) {
+ if (!nd->root.mnt)
+ set_root(nd);
if (nd->flags & LOOKUP_RCU) {
return follow_dotdot_rcu(nd);
} else
@@ -2021,18 +2021,19 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
}
nd->root.mnt = NULL;
+ nd->path.mnt = NULL;
+ nd->path.dentry = NULL;
nd->m_seq = read_seqbegin(&mount_lock);
if (*s == '/') {
- if (flags & LOOKUP_RCU) {
+ if (flags & LOOKUP_RCU)
rcu_read_lock();
- set_root_rcu(nd);
- nd->seq = nd->root_seq;
- } else {
- set_root(nd);
- path_get(&nd->root);
- }
- nd->path = nd->root;
+ set_root(nd);
+ if (likely(!nd_jump_root(nd)))
+ return s;
+ nd->root.mnt = NULL;
+ rcu_read_unlock();
+ return ERR_PTR(-ECHILD);
} else if (nd->dfd == AT_FDCWD) {
if (flags & LOOKUP_RCU) {
struct fs_struct *fs = current->fs;
@@ -2043,11 +2044,14 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
do {
seq = read_seqcount_begin(&fs->seq);
nd->path = fs->pwd;
+ nd->inode = nd->path.dentry->d_inode;
nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
} while (read_seqcount_retry(&fs->seq, seq));
} else {
get_fs_pwd(current->fs, &nd->path);
+ nd->inode = nd->path.dentry->d_inode;
}
+ return s;
} else {
/* Caller must check execute permissions on the starting path component */
struct fd f = fdget_raw(nd->dfd);
@@ -2077,16 +2081,6 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
fdput(f);
return s;
}
-
- nd->inode = nd->path.dentry->d_inode;
- if (!(flags & LOOKUP_RCU))
- return s;
- if (likely(!read_seqcount_retry(&nd->path.dentry->d_seq, nd->seq)))
- return s;
- if (!(nd->flags & LOOKUP_ROOT))
- nd->root.mnt = NULL;
- rcu_read_unlock();
- return ERR_PTR(-ECHILD);
}
static const char *trailing_symlink(struct nameidata *nd)
@@ -2279,6 +2273,8 @@ EXPORT_SYMBOL(vfs_path_lookup);
*
* Note that this routine is purely a helper for filesystem usage and should
* not be called by generic code.
+ *
+ * The caller must hold base->i_mutex.
*/
struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
{
@@ -2322,6 +2318,75 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
}
EXPORT_SYMBOL(lookup_one_len);
+/**
+ * lookup_one_len_unlocked - filesystem helper to lookup single pathname component
+ * @name: pathname component to lookup
+ * @base: base directory to lookup from
+ * @len: maximum length @len should be interpreted to
+ *
+ * Note that this routine is purely a helper for filesystem usage and should
+ * not be called by generic code.
+ *
+ * Unlike lookup_one_len, it should be called without the parent
+ * i_mutex held, and will take the i_mutex itself if necessary.
+ */
+struct dentry *lookup_one_len_unlocked(const char *name,
+ struct dentry *base, int len)
+{
+ struct qstr this;
+ unsigned int c;
+ int err;
+ struct dentry *ret;
+
+ this.name = name;
+ this.len = len;
+ this.hash = full_name_hash(name, len);
+ if (!len)
+ return ERR_PTR(-EACCES);
+
+ if (unlikely(name[0] == '.')) {
+ if (len < 2 || (len == 2 && name[1] == '.'))
+ return ERR_PTR(-EACCES);
+ }
+
+ while (len--) {
+ c = *(const unsigned char *)name++;
+ if (c == '/' || c == '\0')
+ return ERR_PTR(-EACCES);
+ }
+ /*
+ * See if the low-level filesystem might want
+ * to use its own hash..
+ */
+ if (base->d_flags & DCACHE_OP_HASH) {
+ int err = base->d_op->d_hash(base, &this);
+ if (err < 0)
+ return ERR_PTR(err);
+ }
+
+ err = inode_permission(base->d_inode, MAY_EXEC);
+ if (err)
+ return ERR_PTR(err);
+
+ /*
+ * __d_lookup() is used to try to get a quick answer and avoid the
+ * mutex. A false-negative does no harm.
+ */
+ ret = __d_lookup(base, &this);
+ if (ret && unlikely(ret->d_flags & DCACHE_OP_REVALIDATE)) {
+ dput(ret);
+ ret = NULL;
+ }
+ if (ret)
+ return ret;
+
+ mutex_lock(&base->d_inode->i_mutex);
+ ret = __lookup_hash(&this, base, 0);
+ mutex_unlock(&base->d_inode->i_mutex);
+ return ret;
+}
+EXPORT_SYMBOL(lookup_one_len_unlocked);
+
int user_path_at_empty(int dfd, const char __user *name, unsigned flags,
struct path *path, int *empty)
{
@@ -2670,10 +2735,6 @@ static int may_open(struct path *path, int acc_mode, int flag)
struct inode *inode = dentry->d_inode;
int error;
- /* O_PATH? */
- if (!acc_mode)
- return 0;
-
if (!inode)
return -ENOENT;
@@ -2695,7 +2756,7 @@ static int may_open(struct path *path, int acc_mode, int flag)
break;
}
- error = inode_permission(inode, acc_mode);
+ error = inode_permission(inode, MAY_OPEN | acc_mode);
if (error)
return error;
@@ -2887,7 +2948,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
if (*opened & FILE_CREATED) {
WARN_ON(!(open_flag & O_CREAT));
fsnotify_create(dir, dentry);
- acc_mode = MAY_OPEN;
+ acc_mode = 0;
}
error = may_open(&file->f_path, acc_mode, open_flag);
if (error)
@@ -3100,7 +3161,7 @@ retry_lookup:
/* Don't check for write permission, don't truncate */
open_flag &= ~O_TRUNC;
will_truncate = false;
- acc_mode = MAY_OPEN;
+ acc_mode = 0;
path_to_nameidata(&path, nd);
goto finish_open_created;
}
@@ -3184,10 +3245,11 @@ finish_open:
got_write = true;
}
finish_open_created:
- error = may_open(&nd->path, acc_mode, open_flag);
- if (error)
- goto out;
-
+ if (likely(!(open_flag & O_PATH))) {
+ error = may_open(&nd->path, acc_mode, open_flag);
+ if (error)
+ goto out;
+ }
BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
error = vfs_open(&nd->path, file, current_cred());
if (!error) {
@@ -3274,7 +3336,7 @@ static int do_tmpfile(struct nameidata *nd, unsigned flags,
goto out2;
audit_inode(nd->name, child, 0);
/* Don't check for other permissions, the inode was just created */
- error = may_open(&path, MAY_OPEN, op->open_flag);
+ error = may_open(&path, 0, op->open_flag);
if (error)
goto out2;
file->f_path.mnt = path.mnt;
diff --git a/fs/namespace.c b/fs/namespace.c
index 4d2c8f64b7bf..a830e1463704 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2609,18 +2609,18 @@ static long exact_copy_from_user(void *to, const void __user * from,
return n;
}
-int copy_mount_options(const void __user * data, unsigned long *where)
+void *copy_mount_options(const void __user * data)
{
int i;
- unsigned long page;
unsigned long size;
+ char *copy;
- *where = 0;
if (!data)
- return 0;
+ return NULL;
- if (!(page = __get_free_page(GFP_KERNEL)))
- return -ENOMEM;
+ copy = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!copy)
+ return ERR_PTR(-ENOMEM);
/* We only care that *some* data at the address the user
* gave us is valid. Just in case, we'll zero
@@ -2631,15 +2631,14 @@ int copy_mount_options(const void __user * data, unsigned long *where)
if (size > PAGE_SIZE)
size = PAGE_SIZE;
- i = size - exact_copy_from_user((void *)page, data, size);
+ i = size - exact_copy_from_user(copy, data, size);
if (!i) {
- free_page(page);
- return -EFAULT;
+ kfree(copy);
+ return ERR_PTR(-EFAULT);
}
if (i != PAGE_SIZE)
- memset((char *)page + i, 0, PAGE_SIZE - i);
- *where = page;
- return 0;
+ memset(copy + i, 0, PAGE_SIZE - i);
+ return copy;
}
char *copy_mount_string(const void __user *data)
@@ -2906,7 +2905,7 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
int ret;
char *kernel_type;
char *kernel_dev;
- unsigned long data_page;
+ void *options;
kernel_type = copy_mount_string(type);
ret = PTR_ERR(kernel_type);
@@ -2918,14 +2917,14 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
if (IS_ERR(kernel_dev))
goto out_dev;
- ret = copy_mount_options(data, &data_page);
- if (ret < 0)
+ options = copy_mount_options(data);
+ ret = PTR_ERR(options);
+ if (IS_ERR(options))
goto out_data;
- ret = do_mount(kernel_dev, dir_name, kernel_type, flags,
- (void *) data_page);
+ ret = do_mount(kernel_dev, dir_name, kernel_type, flags, options);
- free_page(data_page);
+ kfree(options);
out_data:
kfree(kernel_dev);
out_dev:
@@ -2949,9 +2948,9 @@ bool is_path_reachable(struct mount *mnt, struct dentry *dentry,
return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);
}
-int path_is_under(struct path *path1, struct path *path2)
+bool path_is_under(struct path *path1, struct path *path2)
{
- int res;
+ bool res;
read_seqlock_excl(&mount_lock);
res = is_path_reachable(real_mount(path1->mnt), path1->dentry, path2);
read_sequnlock_excl(&mount_lock);
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 00575d776d91..2246454dec76 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -823,7 +823,7 @@ compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
} else
dchild = dget(dparent);
} else
- dchild = lookup_one_len(name, dparent, namlen);
+ dchild = lookup_one_len_unlocked(name, dparent, namlen);
if (IS_ERR(dchild))
return rv;
if (d_mountpoint(dchild))
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 924416f91fdd..d6ef0955a979 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2858,14 +2858,14 @@ nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd,
__be32 nfserr;
int ignore_crossmnt = 0;
- dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
+ dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen);
if (IS_ERR(dentry))
return nfserrno(PTR_ERR(dentry));
if (d_really_is_negative(dentry)) {
/*
- * nfsd_buffered_readdir drops the i_mutex between
- * readdir and calling this callback, leaving a window
- * where this directory entry could have gone away.
+ * we're not holding the i_mutex here, so there's
+ * a window where this directory entry could have gone
+ * away.
*/
dput(dentry);
return nfserr_noent;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 5411bf09b810..d41c149fae75 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -218,10 +218,16 @@ nfsd_lookup_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp,
host_err = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto out_nfserr;
- /*
- * check if we have crossed a mount point ...
- */
if (nfsd_mountpoint(dentry, exp)) {
+ /*
+ * We don't need the i_mutex after all. It's
+ * still possible we could open this (regular
+ * files can be mountpoints too), but the
+ * i_mutex is just there to prevent renames of
+ * something that we might be about to delegate,
+ * and a mountpoint won't be renamed:
+ */
+ fh_unlock(fhp);
if ((host_err = nfsd_cross_mnt(rqstp, &dentry, &exp))) {
dput(dentry);
goto out_nfserr;
@@ -1817,7 +1823,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
offset = *offsetp;
while (1) {
- struct inode *dir_inode = file_inode(file);
unsigned int reclen;
cdp->err = nfserr_eof; /* will be cleared on successful read */
@@ -1836,15 +1841,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
if (!size)
break;
- /*
- * Various filldir functions may end up calling back into
- * lookup_one_len() and the file system's ->lookup() method.
- * These expect i_mutex to be held, as it would within readdir.
- */
- host_err = mutex_lock_killable(&dir_inode->i_mutex);
- if (host_err)
- break;
-
de = (struct buffered_dirent *)buf.dirent;
while (size > 0) {
offset = de->offset;
@@ -1861,7 +1857,6 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func,
size -= reclen;
de = (struct buffered_dirent *)((char *)de + reclen);
}
- mutex_unlock(&dir_inode->i_mutex);
if (size > 0) /* We bailed out early */
break;
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 354013ea22ec..c7343844e6b6 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1316,13 +1316,11 @@ nilfs_mount(struct file_system_type *fs_type, int flags,
}
if (!s->s_root) {
- char b[BDEVNAME_SIZE];
-
- s_new = true;
+ s_new = true;
/* New superblock instance created */
s->s_mode = mode;
- strlcpy(s->s_id, bdevname(sd.bdev, b), sizeof(s->s_id));
+ snprintf(s->s_id, sizeof(s->s_id), "%pg", sd.bdev);
sb_set_blocksize(s, block_size(sd.bdev));
err = nilfs_fill_super(s, data, flags & MS_SILENT ? 1 : 0);
diff --git a/fs/open.c b/fs/open.c
index b6f1e96a7c0b..b25b1542c530 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -887,7 +887,7 @@ EXPORT_SYMBOL(dentry_open);
static inline int build_open_flags(int flags, umode_t mode, struct open_flags *op)
{
int lookup_flags = 0;
- int acc_mode;
+ int acc_mode = ACC_MODE(flags);
if (flags & (O_CREAT | __O_TMPFILE))
op->mode = (mode & S_IALLUGO) | S_IFREG;
@@ -909,7 +909,6 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o
if (flags & __O_TMPFILE) {
if ((flags & O_TMPFILE_MASK) != O_TMPFILE)
return -EINVAL;
- acc_mode = MAY_OPEN | ACC_MODE(flags);
if (!(acc_mode & MAY_WRITE))
return -EINVAL;
} else if (flags & O_PATH) {
@@ -919,8 +918,6 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o
*/
flags &= O_DIRECTORY | O_NOFOLLOW | O_PATH;
acc_mode = 0;
- } else {
- acc_mode = MAY_OPEN | ACC_MODE(flags);
}
op->open_flag = flags;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 55e01f88eac9..2cf5d7e37375 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2365,7 +2365,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file_inode(file);
- char *page;
+ void *page;
ssize_t length;
struct task_struct *task = get_proc_task(inode);
@@ -2380,14 +2380,11 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
if (*ppos != 0)
goto out;
- length = -ENOMEM;
- page = (char*)__get_free_page(GFP_TEMPORARY);
- if (!page)
+ page = memdup_user(buf, count);
+ if (IS_ERR(page)) {
+ length = PTR_ERR(page);
goto out;
-
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out_free;
+ }
/* Guard against adverse ptrace interaction */
length = mutex_lock_interruptible(&task->signal->cred_guard_mutex);
@@ -2396,10 +2393,10 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
length = security_setprocattr(task,
(char*)file->f_path.dentry->d_name.name,
- (void*)page, count);
+ page, count);
mutex_unlock(&task->signal->cred_guard_mutex);
out_free:
- free_page((unsigned long) page);
+ kfree(page);
out:
put_task_struct(task);
out_no_task:
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 3c2a915c695a..56afa5ef08f2 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -258,6 +258,7 @@ static int proc_readfd_common(struct file *file, struct dir_context *ctx,
name, len, instantiate, p,
(void *)(unsigned long)fd))
goto out_fd_loop;
+ cond_resched();
rcu_read_lock();
}
rcu_read_unlock();
diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
index 8ebd9a334085..2256e7e23e67 100644
--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -95,9 +95,9 @@ static int show_vfsmnt(struct seq_file *m, struct vfsmount *mnt)
{
struct proc_mounts *p = m->private;
struct mount *r = real_mount(mnt);
- int err = 0;
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
struct super_block *sb = mnt_path.dentry->d_sb;
+ int err;
if (sb->s_op->show_devname) {
err = sb->s_op->show_devname(m, mnt_path.dentry);
@@ -131,16 +131,17 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
struct mount *r = real_mount(mnt);
struct super_block *sb = mnt->mnt_sb;
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
- int err = 0;
+ int err;
seq_printf(m, "%i %i %u:%u ", r->mnt_id, r->mnt_parent->mnt_id,
MAJOR(sb->s_dev), MINOR(sb->s_dev));
- if (sb->s_op->show_path)
+ if (sb->s_op->show_path) {
err = sb->s_op->show_path(m, mnt->mnt_root);
- else
+ if (err)
+ goto out;
+ } else {
seq_dentry(m, mnt->mnt_root, " \t\n\\");
- if (err)
- goto out;
+ }
seq_putc(m, ' ');
/* mountpoints outside of chroot jail will give SEQ_SKIP on this */
@@ -168,12 +169,13 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
seq_puts(m, " - ");
show_type(m, sb);
seq_putc(m, ' ');
- if (sb->s_op->show_devname)
+ if (sb->s_op->show_devname) {
err = sb->s_op->show_devname(m, mnt->mnt_root);
- else
+ if (err)
+ goto out;
+ } else {
mangle(m, r->mnt_devname ? r->mnt_devname : "none");
- if (err)
- goto out;
+ }
seq_puts(m, sb->s_flags & MS_RDONLY ? " ro" : " rw");
err = show_sb_opts(m, sb);
if (err)
@@ -191,7 +193,7 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
struct mount *r = real_mount(mnt);
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
struct super_block *sb = mnt_path.dentry->d_sb;
- int err = 0;
+ int err;
/* device */
if (sb->s_op->show_devname) {
@@ -220,8 +222,7 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
/* optional statistics */
if (sb->s_op->show_stats) {
seq_putc(m, ' ');
- if (!err)
- err = sb->s_op->show_stats(m, mnt_path.dentry);
+ err = sb->s_op->show_stats(m, mnt_path.dentry);
}
seq_putc(m, '\n');
diff --git a/fs/read_write.c b/fs/read_write.c
index 2116e74a83d3..06b07d5a08fe 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -172,6 +172,45 @@ loff_t fixed_size_llseek(struct file *file, loff_t offset, int whence, loff_t si
EXPORT_SYMBOL(fixed_size_llseek);
/**
+ * no_seek_end_llseek - llseek implementation for fixed-sized devices
+ * @file: file structure to seek on
+ * @offset: file offset to seek to
+ * @whence: type of seek
+ *
+ */
+loff_t no_seek_end_llseek(struct file *file, loff_t offset, int whence)
+{
+ switch (whence) {
+ case SEEK_SET: case SEEK_CUR:
+ return generic_file_llseek_size(file, offset, whence,
+ ~0ULL, 0);
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL(no_seek_end_llseek);
+
+/**
+ * no_seek_end_llseek_size - llseek implementation for fixed-sized devices
+ * @file: file structure to seek on
+ * @offset: file offset to seek to
+ * @whence: type of seek
+ * @size: maximal offset allowed
+ *
+ */
+loff_t no_seek_end_llseek_size(struct file *file, loff_t offset, int whence, loff_t size)
+{
+ switch (whence) {
+ case SEEK_SET: case SEEK_CUR:
+ return generic_file_llseek_size(file, offset, whence,
+ size, 0);
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL(no_seek_end_llseek_size);
+
+/**
* noop_llseek - No Operation Performed llseek implementation
* @file: file structure to seek on
* @offset: file offset to seek to
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 9d6486d416a3..44c2bdced1c8 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -618,12 +618,10 @@ static void release_buffer_page(struct buffer_head *bh)
static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate)
{
- char b[BDEVNAME_SIZE];
-
if (buffer_journaled(bh)) {
reiserfs_warning(NULL, "clm-2084",
- "pinned buffer %lu:%s sent to disk",
- bh->b_blocknr, bdevname(bh->b_bdev, b));
+ "pinned buffer %lu:%pg sent to disk",
+ bh->b_blocknr, bh->b_bdev);
}
if (uptodate)
set_buffer_uptodate(bh);
@@ -2387,11 +2385,10 @@ static int journal_read(struct super_block *sb)
int replay_count = 0;
int continue_replay = 1;
int ret;
- char b[BDEVNAME_SIZE];
cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(sb);
- reiserfs_info(sb, "checking transaction log (%s)\n",
- bdevname(journal->j_dev_bd, b));
+ reiserfs_info(sb, "checking transaction log (%pg)\n",
+ journal->j_dev_bd);
start = get_seconds();
/*
@@ -2651,8 +2648,8 @@ static int journal_init_dev(struct super_block *super,
set_blocksize(journal->j_dev_bd, super->s_blocksize);
reiserfs_info(super,
- "journal_init_dev: journal device: %s\n",
- bdevname(journal->j_dev_bd, b));
+ "journal_init_dev: journal device: %pg\n",
+ journal->j_dev_bd);
return 0;
}
@@ -2724,7 +2721,6 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
struct reiserfs_journal_header *jh;
struct reiserfs_journal *journal;
struct reiserfs_journal_list *jl;
- char b[BDEVNAME_SIZE];
int ret;
journal = SB_JOURNAL(sb) = vzalloc(sizeof(struct reiserfs_journal));
@@ -2794,10 +2790,10 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
&& (le32_to_cpu(jh->jh_journal.jp_journal_magic) !=
sb_jp_journal_magic(rs))) {
reiserfs_warning(sb, "sh-460",
- "journal header magic %x (device %s) does "
+ "journal header magic %x (device %pg) does "
"not match to magic found in super block %x",
jh->jh_journal.jp_journal_magic,
- bdevname(journal->j_dev_bd, b),
+ journal->j_dev_bd,
sb_jp_journal_magic(rs));
brelse(bhjh);
goto free_and_return;
@@ -2818,10 +2814,10 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
journal->j_max_trans_age = commit_max_age;
}
- reiserfs_info(sb, "journal params: device %s, size %u, "
+ reiserfs_info(sb, "journal params: device %pg, size %u, "
"journal first block %u, max trans len %u, max batch %u, "
"max commit age %u, max trans age %u\n",
- bdevname(journal->j_dev_bd, b),
+ journal->j_dev_bd,
SB_ONDISK_JOURNAL_SIZE(sb),
SB_ONDISK_JOURNAL_1st_BLOCK(sb),
journal->j_trans_max,
diff --git a/fs/reiserfs/prints.c b/fs/reiserfs/prints.c
index ae1dc841db3a..4f3f928076f3 100644
--- a/fs/reiserfs/prints.c
+++ b/fs/reiserfs/prints.c
@@ -139,11 +139,9 @@ static void sprintf_block_head(char *buf, struct buffer_head *bh)
static void sprintf_buffer_head(char *buf, struct buffer_head *bh)
{
- char b[BDEVNAME_SIZE];
-
sprintf(buf,
- "dev %s, size %zd, blocknr %llu, count %d, state 0x%lx, page %p, (%s, %s, %s)",
- bdevname(bh->b_bdev, b), bh->b_size,
+ "dev %pg, size %zd, blocknr %llu, count %d, state 0x%lx, page %p, (%s, %s, %s)",
+ bh->b_bdev, bh->b_size,
(unsigned long long)bh->b_blocknr, atomic_read(&(bh->b_count)),
bh->b_state, bh->b_page,
buffer_uptodate(bh) ? "UPTODATE" : "!UPTODATE",
@@ -530,7 +528,6 @@ static int print_super_block(struct buffer_head *bh)
(struct reiserfs_super_block *)(bh->b_data);
int skipped, data_blocks;
char *version;
- char b[BDEVNAME_SIZE];
if (is_reiserfs_3_5(rs)) {
version = "3.5";
@@ -543,7 +540,7 @@ static int print_super_block(struct buffer_head *bh)
return 1;
}
- printk("%s\'s super block is in block %llu\n", bdevname(bh->b_bdev, b),
+ printk("%pg\'s super block is in block %llu\n", bh->b_bdev,
(unsigned long long)bh->b_blocknr);
printk("Reiserfs version %s\n", version);
printk("Block count %u\n", sb_block_count(rs));
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 621b9f381fe1..fe999157dd97 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -303,11 +303,10 @@ static int show_journal(struct seq_file *m, void *unused)
struct reiserfs_sb_info *r = REISERFS_SB(sb);
struct reiserfs_super_block *rs = r->s_rs;
struct journal_params *jp = &rs->s_v1.s_journal;
- char b[BDEVNAME_SIZE];
seq_printf(m, /* on-disk fields */
"jp_journal_1st_block: \t%i\n"
- "jp_journal_dev: \t%s[%x]\n"
+ "jp_journal_dev: \t%pg[%x]\n"
"jp_journal_size: \t%i\n"
"jp_journal_trans_max: \t%i\n"
"jp_journal_magic: \t%i\n"
@@ -348,7 +347,7 @@ static int show_journal(struct seq_file *m, void *unused)
"prepare: \t%12lu\n"
"prepare_retry: \t%12lu\n",
DJP(jp_journal_1st_block),
- bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
+ SB_JOURNAL(sb)->j_dev_bd,
DJP(jp_journal_dev),
DJP(jp_journal_size),
DJP(jp_journal_trans_max),
diff --git a/fs/select.c b/fs/select.c
index 015547330e88..79d0d4953cad 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -778,8 +778,8 @@ static inline unsigned int do_pollfd(struct pollfd *pollfd, poll_table *pwait,
return mask;
}
-static int do_poll(unsigned int nfds, struct poll_list *list,
- struct poll_wqueues *wait, struct timespec *end_time)
+static int do_poll(struct poll_list *list, struct poll_wqueues *wait,
+ struct timespec *end_time)
{
poll_table* pt = &wait->pt;
ktime_t expire, *to = NULL;
@@ -908,7 +908,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
}
poll_initwait(&table);
- fdcount = do_poll(nfds, head, &table, end_time);
+ fdcount = do_poll(head, &table, end_time);
poll_freewait(&table);
for (walk = head; walk; walk = walk->next) {
diff --git a/fs/splice.c b/fs/splice.c
index 4cf700d50b40..82bc0d64fc38 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -415,6 +415,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
*/
if (!page->mapping) {
unlock_page(page);
+retry_lookup:
page = find_or_create_page(mapping, index,
mapping_gfp_mask(mapping));
@@ -439,13 +440,10 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
error = mapping->a_ops->readpage(in, page);
if (unlikely(error)) {
/*
- * We really should re-lookup the page here,
- * but it complicates things a lot. Instead
- * lets just do what we already stored, and
- * we'll get it the next time we are called.
+ * Re-lookup the page
*/
if (error == AOP_TRUNCATED_PAGE)
- error = 0;
+ goto retry_lookup;
break;
}
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 5056babe00df..dded920cbc8f 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -80,7 +80,6 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct squashfs_sb_info *msblk;
struct squashfs_super_block *sblk = NULL;
- char b[BDEVNAME_SIZE];
struct inode *root;
long long root_inode;
unsigned short flags;
@@ -124,8 +123,8 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_magic = le32_to_cpu(sblk->s_magic);
if (sb->s_magic != SQUASHFS_MAGIC) {
if (!silent)
- ERROR("Can't find a SQUASHFS superblock on %s\n",
- bdevname(sb->s_bdev, b));
+ ERROR("Can't find a SQUASHFS superblock on %pg\n",
+ sb->s_bdev);
goto failed_mount;
}
@@ -178,7 +177,7 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
msblk->inodes = le32_to_cpu(sblk->inodes);
flags = le16_to_cpu(sblk->flags);
- TRACE("Found valid superblock on %s\n", bdevname(sb->s_bdev, b));
+ TRACE("Found valid superblock on %pg\n", sb->s_bdev);
TRACE("Inodes are %scompressed\n", SQUASHFS_UNCOMPRESSED_INODES(flags)
? "un" : "");
TRACE("Data is %scompressed\n", SQUASHFS_UNCOMPRESSED_DATA(flags)
diff --git a/fs/super.c b/fs/super.c
index 954aeb80e202..cc658a20a29e 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1012,10 +1012,8 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
blkdev_put(bdev, mode);
down_write(&s->s_umount);
} else {
- char b[BDEVNAME_SIZE];
-
s->s_mode = mode;
- strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
+ snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
sb_set_blocksize(s, block_size(bdev));
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
diff --git a/fs/xattr.c b/fs/xattr.c
index d7f5037a17b5..d5dd6c8b82a7 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -305,7 +305,6 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
{
int error;
void *kvalue = NULL;
- void *vvalue = NULL; /* If non-NULL, we used vmalloc() */
char kname[XATTR_NAME_MAX + 1];
if (flags & ~(XATTR_CREATE|XATTR_REPLACE))
@@ -322,10 +321,9 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
return -E2BIG;
kvalue = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
if (!kvalue) {
- vvalue = vmalloc(size);
- if (!vvalue)
+ kvalue = vmalloc(size);
+ if (!kvalue)
return -ENOMEM;
- kvalue = vvalue;
}
if (copy_from_user(kvalue, value, size)) {
error = -EFAULT;
@@ -338,10 +336,8 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
error = vfs_setxattr(d, kname, kvalue, size, flags);
out:
- if (vvalue)
- vfree(vvalue);
- else
- kfree(kvalue);
+ kvfree(kvalue);
+
return error;
}
@@ -409,7 +405,6 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
{
ssize_t error;
void *kvalue = NULL;
- void *vvalue = NULL;
char kname[XATTR_NAME_MAX + 1];
error = strncpy_from_user(kname, name, sizeof(kname));
@@ -423,10 +418,9 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
size = XATTR_SIZE_MAX;
kvalue = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
if (!kvalue) {
- vvalue = vmalloc(size);
- if (!vvalue)
+ kvalue = vmalloc(size);
+ if (!kvalue)
return -ENOMEM;
- kvalue = vvalue;
}
}
@@ -442,10 +436,9 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
than XATTR_SIZE_MAX bytes. Not possible. */
error = -E2BIG;
}
- if (vvalue)
- vfree(vvalue);
- else
- kfree(kvalue);
+
+ kvfree(kvalue);
+
return error;
}
@@ -502,17 +495,15 @@ listxattr(struct dentry *d, char __user *list, size_t size)
{
ssize_t error;
char *klist = NULL;
- char *vlist = NULL; /* If non-NULL, we used vmalloc() */
if (size) {
if (size > XATTR_LIST_MAX)
size = XATTR_LIST_MAX;
klist = kmalloc(size, __GFP_NOWARN | GFP_KERNEL);
if (!klist) {
- vlist = vmalloc(size);
- if (!vlist)
+ klist = vmalloc(size);
+ if (!klist)
return -ENOMEM;
- klist = vlist;
}
}
@@ -525,10 +516,9 @@ listxattr(struct dentry *d, char __user *list, size_t size)
than XATTR_LIST_MAX bytes. Not possible. */
error = -E2BIG;
}
- if (vlist)
- vfree(vlist);
- else
- kfree(klist);
+
+ kvfree(klist);
+
return error;
}
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 3243cdf97f33..ace91e7c713e 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1632,13 +1632,9 @@ xfs_setsize_buftarg(
btp->bt_meta_sectormask = sectorsize - 1;
if (set_blocksize(btp->bt_bdev, sectorsize)) {
- char name[BDEVNAME_SIZE];
-
- bdevname(btp->bt_bdev, name);
-
xfs_warn(btp->bt_mount,
- "Cannot set_blocksize to %u on device %s",
- sectorsize, name);
+ "Cannot set_blocksize to %u on device %pg",
+ sectorsize, btp->bt_bdev);
return -EINVAL;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index ec43a24bf63d..731262c3fbb7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2307,9 +2307,9 @@ static inline void iterate_bdevs(void (*f)(struct block_device *, void *), void
{
}
-static inline int sb_is_blkdev_sb(struct super_block *sb)
+static inline bool sb_is_blkdev_sb(struct super_block *sb)
{
- return 0;
+ return false;
}
#endif
extern int sync_filesystem(struct super_block *);
@@ -2387,7 +2387,7 @@ extern void init_special_inode(struct inode *, umode_t, dev_t);
/* Invalid inode operations -- fs/bad_inode.c */
extern void make_bad_inode(struct inode *);
-extern int is_bad_inode(struct inode *);
+extern bool is_bad_inode(struct inode *);
#ifdef CONFIG_BLOCK
/*
@@ -2548,8 +2548,8 @@ extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
extern struct file * open_exec(const char *);
/* fs/dcache.c -- generic fs support functions */
-extern int is_subdir(struct dentry *, struct dentry *);
-extern int path_is_under(struct path *, struct path *);
+extern bool is_subdir(struct dentry *, struct dentry *);
+extern bool path_is_under(struct path *, struct path *);
extern char *file_path(struct file *, char *, int);
@@ -2676,6 +2676,8 @@ extern loff_t generic_file_llseek_size(struct file *file, loff_t offset,
int whence, loff_t maxsize, loff_t eof);
extern loff_t fixed_size_llseek(struct file *file, loff_t offset,
int whence, loff_t size);
+extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t);
+extern loff_t no_seek_end_llseek(struct file *, loff_t, int);
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);
@@ -2978,7 +2980,7 @@ int __init get_filesystem_list(char *buf);
#define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \
(flag & __FMODE_NONOTIFY)))
-static inline int is_sxid(umode_t mode)
+static inline bool is_sxid(umode_t mode)
{
return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
}
diff --git a/include/linux/namei.h b/include/linux/namei.h
index d8c6334cd150..d0f25d81b46a 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -77,6 +77,7 @@ extern struct dentry *kern_path_locked(const char *, struct path *);
extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int);
extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
+extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int);
extern int follow_down_one(struct path *);
extern int follow_down(struct path *);
diff --git a/include/linux/string.h b/include/linux/string.h
index 9ef7795e65e4..9eebc66d957a 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -10,6 +10,7 @@
extern char *strndup_user(const char __user *, long);
extern void *memdup_user(const void __user *, size_t);
+extern void *memdup_user_nul(const void __user *, size_t);
/*
* Include machine specific inline routines
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index dc6858d6639e..5faf89ac9ec0 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2047,9 +2047,8 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
void *data)
{
int *i, vleft, first = 1, err = 0;
- unsigned long page = 0;
size_t left;
- char *kbuf;
+ char *kbuf = NULL, *p;
if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
*lenp = 0;
@@ -2078,15 +2077,9 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
if (left > PAGE_SIZE - 1)
left = PAGE_SIZE - 1;
- page = __get_free_page(GFP_TEMPORARY);
- kbuf = (char *) page;
- if (!kbuf)
- return -ENOMEM;
- if (copy_from_user(kbuf, buffer, left)) {
- err = -EFAULT;
- goto free;
- }
- kbuf[left] = 0;
+ p = kbuf = memdup_user_nul(buffer, left);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
}
for (; left && vleft--; i++, first=0) {
@@ -2094,11 +2087,11 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
bool neg;
if (write) {
- left -= proc_skip_spaces(&kbuf);
+ left -= proc_skip_spaces(&p);
if (!left)
break;
- err = proc_get_long(&kbuf, &left, &lval, &neg,
+ err = proc_get_long(&p, &left, &lval, &neg,
proc_wspace_sep,
sizeof(proc_wspace_sep), NULL);
if (err)
@@ -2125,10 +2118,9 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
if (!write && !first && left && !err)
err = proc_put_char(&buffer, &left, '\n');
if (write && !err && left)
- left -= proc_skip_spaces(&kbuf);
-free:
+ left -= proc_skip_spaces(&p);
if (write) {
- free_page(page);
+ kfree(kbuf);
if (first)
return err ? : -EINVAL;
}
@@ -2310,9 +2302,8 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
{
unsigned long *i, *min, *max;
int vleft, first = 1, err = 0;
- unsigned long page = 0;
size_t left;
- char *kbuf;
+ char *kbuf = NULL, *p;
if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
*lenp = 0;
@@ -2340,15 +2331,9 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
if (left > PAGE_SIZE - 1)
left = PAGE_SIZE - 1;
- page = __get_free_page(GFP_TEMPORARY);
- kbuf = (char *) page;
- if (!kbuf)
- return -ENOMEM;
- if (copy_from_user(kbuf, buffer, left)) {
- err = -EFAULT;
- goto free;
- }
- kbuf[left] = 0;
+ p = kbuf = memdup_user_nul(buffer, left);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
}
for (; left && vleft--; i++, first = 0) {
@@ -2357,9 +2342,9 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
if (write) {
bool neg;
- left -= proc_skip_spaces(&kbuf);
+ left -= proc_skip_spaces(&p);
- err = proc_get_long(&kbuf, &left, &val, &neg,
+ err = proc_get_long(&p, &left, &val, &neg,
proc_wspace_sep,
sizeof(proc_wspace_sep), NULL);
if (err)
@@ -2385,10 +2370,9 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
if (!write && !first && left && !err)
err = proc_put_char(&buffer, &left, '\n');
if (write && !err)
- left -= proc_skip_spaces(&kbuf);
-free:
+ left -= proc_skip_spaces(&p);
if (write) {
- free_page(page);
+ kfree(kbuf);
if (first)
return err ? : -EINVAL;
}
@@ -2650,34 +2634,27 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
}
if (write) {
- unsigned long page = 0;
- char *kbuf;
+ char *kbuf, *p;
if (left > PAGE_SIZE - 1)
left = PAGE_SIZE - 1;
- page = __get_free_page(GFP_TEMPORARY);
- kbuf = (char *) page;
- if (!kbuf)
- return -ENOMEM;
- if (copy_from_user(kbuf, buffer, left)) {
- free_page(page);
- return -EFAULT;
- }
- kbuf[left] = 0;
+ p = kbuf = memdup_user_nul(buffer, left);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long),
GFP_KERNEL);
if (!tmp_bitmap) {
- free_page(page);
+ kfree(kbuf);
return -ENOMEM;
}
- proc_skip_char(&kbuf, &left, '\n');
+ proc_skip_char(&p, &left, '\n');
while (!err && left) {
unsigned long val_a, val_b;
bool neg;
- err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a,
+ err = proc_get_long(&p, &left, &val_a, &neg, tr_a,
sizeof(tr_a), &c);
if (err)
break;
@@ -2688,12 +2665,12 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
val_b = val_a;
if (left) {
- kbuf++;
+ p++;
left--;
}
if (c == '-') {
- err = proc_get_long(&kbuf, &left, &val_b,
+ err = proc_get_long(&p, &left, &val_b,
&neg, tr_b, sizeof(tr_b),
&c);
if (err)
@@ -2704,16 +2681,16 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
break;
}
if (left) {
- kbuf++;
+ p++;
left--;
}
}
bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
first = 0;
- proc_skip_char(&kbuf, &left, '\n');
+ proc_skip_char(&p, &left, '\n');
}
- free_page(page);
+ kfree(kbuf);
} else {
unsigned long bit_a, bit_b = 0;
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index a990824c8604..2aeb6ffc0a1e 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -349,16 +349,10 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
if (count >= BLK_TN_MAX_MSG)
return -EINVAL;
- msg = kmalloc(count + 1, GFP_KERNEL);
- if (msg == NULL)
- return -ENOMEM;
-
- if (copy_from_user(msg, buffer, count)) {
- kfree(msg);
- return -EFAULT;
- }
+ msg = memdup_user_nul(buffer, count);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
- msg[count] = '\0';
bt = filp->private_data;
__trace_note_message(bt, "%s", msg);
kfree(msg);
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 4f6ef6912e00..f333e57c4614 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1340,15 +1340,9 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
if (cnt >= PAGE_SIZE)
return -EINVAL;
- buf = (char *)__get_free_page(GFP_TEMPORARY);
- if (!buf)
- return -ENOMEM;
-
- if (copy_from_user(buf, ubuf, cnt)) {
- free_page((unsigned long) buf);
- return -EFAULT;
- }
- buf[cnt] = '\0';
+ buf = memdup_user_nul(ubuf, cnt);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
mutex_lock(&event_mutex);
file = event_file_data(filp);
@@ -1356,7 +1350,7 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
err = apply_event_filter(file, buf);
mutex_unlock(&event_mutex);
- free_page((unsigned long) buf);
+ kfree(buf);
if (err < 0)
return err;
@@ -1507,18 +1501,12 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
if (cnt >= PAGE_SIZE)
return -EINVAL;
- buf = (char *)__get_free_page(GFP_TEMPORARY);
- if (!buf)
- return -ENOMEM;
-
- if (copy_from_user(buf, ubuf, cnt)) {
- free_page((unsigned long) buf);
- return -EFAULT;
- }
- buf[cnt] = '\0';
+ buf = memdup_user_nul(ubuf, cnt);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
err = apply_subsystem_event_filter(dir, buf);
- free_page((unsigned long) buf);
+ kfree(buf);
if (err < 0)
return err;
diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c
index 42a4009fd75a..4b5e8ed68d77 100644
--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -237,28 +237,23 @@ static ssize_t event_trigger_regex_write(struct file *file,
if (cnt >= PAGE_SIZE)
return -EINVAL;
- buf = (char *)__get_free_page(GFP_TEMPORARY);
- if (!buf)
- return -ENOMEM;
+ buf = memdup_user_nul(ubuf, cnt);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
- if (copy_from_user(buf, ubuf, cnt)) {
- free_page((unsigned long)buf);
- return -EFAULT;
- }
- buf[cnt] = '\0';
strim(buf);
mutex_lock(&event_mutex);
event_file = event_file_data(file);
if (unlikely(!event_file)) {
mutex_unlock(&event_mutex);
- free_page((unsigned long)buf);
+ kfree(buf);
return -ENODEV;
}
ret = trigger_process_regex(event_file, buf);
mutex_unlock(&event_mutex);
- free_page((unsigned long)buf);
+ kfree(buf);
if (ret < 0)
goto out;
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 88fefa68c516..9bafc211930c 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -602,8 +602,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
struct uid_gid_map new_map;
unsigned idx;
struct uid_gid_extent *extent = NULL;
- unsigned long page = 0;
- char *kbuf, *pos, *next_line;
+ char *kbuf = NULL, *pos, *next_line;
ssize_t ret = -EINVAL;
/*
@@ -638,23 +637,18 @@ static ssize_t map_write(struct file *file, const char __user *buf,
if (cap_valid(cap_setid) && !file_ns_capable(file, ns, CAP_SYS_ADMIN))
goto out;
- /* Get a buffer */
- ret = -ENOMEM;
- page = __get_free_page(GFP_TEMPORARY);
- kbuf = (char *) page;
- if (!page)
- goto out;
-
/* Only allow < page size writes at the beginning of the file */
ret = -EINVAL;
if ((*ppos != 0) || (count >= PAGE_SIZE))
goto out;
/* Slurp in the user data */
- ret = -EFAULT;
- if (copy_from_user(kbuf, buf, count))
+ kbuf = memdup_user_nul(buf, count);
+ if (IS_ERR(kbuf)) {
+ ret = PTR_ERR(kbuf);
+ kbuf = NULL;
goto out;
- kbuf[count] = '\0';
+ }
/* Parse the user data */
ret = -EINVAL;
@@ -756,8 +750,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
ret = count;
out:
mutex_unlock(&userns_state_mutex);
- if (page)
- free_page(page);
+ kfree(kbuf);
return ret;
}
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index e3952e9c8ec0..fe42b6ec3f0c 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -657,14 +657,9 @@ static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf,
pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE);
return -E2BIG;
}
- tmpbuf = kmalloc(len + 1, GFP_KERNEL);
- if (!tmpbuf)
- return -ENOMEM;
- if (copy_from_user(tmpbuf, ubuf, len)) {
- kfree(tmpbuf);
- return -EFAULT;
- }
- tmpbuf[len] = '\0';
+ tmpbuf = memdup_user_nul(ubuf, len);
+ if (IS_ERR(tmpbuf))
+ return PTR_ERR(tmpbuf);
vpr_info("read %d bytes from userspace\n", (int)len);
ret = ddebug_exec_queries(tmpbuf, NULL);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index f9cee8e1233c..ac3f9476b776 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -31,6 +31,9 @@
#include <linux/dcache.h>
#include <linux/cred.h>
#include <net/addrconf.h>
+#ifdef CONFIG_BLOCK
+#include <linux/blkdev.h>
+#endif
#include <asm/page.h> /* for PAGE_SIZE */
#include <asm/sections.h> /* for dereference_function_descriptor() */
@@ -613,6 +616,26 @@ char *dentry_name(char *buf, char *end, const struct dentry *d, struct printf_sp
return buf;
}
+#ifdef CONFIG_BLOCK
+static noinline_for_stack
+char *bdev_name(char *buf, char *end, struct block_device *bdev,
+ struct printf_spec spec, const char *fmt)
+{
+ struct gendisk *hd = bdev->bd_disk;
+
+ buf = string(buf, end, hd->disk_name, spec);
+ if (bdev->bd_part->partno) {
+ if (isdigit(hd->disk_name[strlen(hd->disk_name)-1])) {
+ if (buf < end)
+ *buf = 'p';
+ buf++;
+ }
+ buf = number(buf, end, bdev->bd_part->partno, spec);
+ }
+ return buf;
+}
+#endif
+
static noinline_for_stack
char *symbol_string(char *buf, char *end, void *ptr,
struct printf_spec spec, const char *fmt)
@@ -1443,6 +1466,7 @@ int kptr_restrict __read_mostly;
* (default assumed to be phys_addr_t, passed by reference)
* - 'd[234]' For a dentry name (optionally 2-4 last components)
* - 'D[234]' Same as 'd' but for a struct file
+ * - 'g' For block_device name (gendisk + partition number)
* - 'C' For a clock, it prints the name (Common Clock Framework) or address
* (legacy clock framework) of the clock
* - 'Cn' For a clock, it prints the name (Common Clock Framework) or address
@@ -1600,6 +1624,11 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
return dentry_name(buf, end,
((const struct file *)ptr)->f_path.dentry,
spec, fmt);
+#ifdef CONFIG_BLOCK
+ case 'g':
+ return bdev_name(buf, end, ptr, spec, fmt);
+#endif
+
}
spec.flags |= SMALL;
if (spec.field_width == -1) {
diff --git a/mm/util.c b/mm/util.c
index 9af1c12b310c..2d28f7930043 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -176,6 +176,37 @@ char *strndup_user(const char __user *s, long n)
}
EXPORT_SYMBOL(strndup_user);
+/**
+ * memdup_user_nul - duplicate memory region from user space and NUL-terminate
+ *
+ * @src: source address in user space
+ * @len: number of bytes to copy
+ *
+ * Returns an ERR_PTR() on failure.
+ */
+void *memdup_user_nul(const void __user *src, size_t len)
+{
+ char *p;
+
+ /*
+ * Always use GFP_KERNEL, since copy_from_user() can sleep and
+ * cause pagefault, which makes it pointless to use GFP_NOFS
+ * or GFP_ATOMIC.
+ */
+ p = kmalloc_track_caller(len + 1, GFP_KERNEL);
+ if (!p)
+ return ERR_PTR(-ENOMEM);
+
+ if (copy_from_user(p, src, len)) {
+ kfree(p);
+ return ERR_PTR(-EFAULT);
+ }
+ p[len] = '\0';
+
+ return p;
+}
+EXPORT_SYMBOL(memdup_user_nul);
+
void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma,
struct vm_area_struct *prev, struct rb_node *rb_parent)
{
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 6e70ddb158b4..199bc76202d2 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -105,7 +105,7 @@ static struct list_head virtio_chan_list;
/* How many bytes left in this page. */
static unsigned int rest_of_page(void *data)
{
- return PAGE_SIZE - ((unsigned long)data % PAGE_SIZE);
+ return PAGE_SIZE - offset_in_page(data);
}
/**
@@ -143,7 +143,6 @@ static void p9_virtio_close(struct p9_client *client)
static void req_done(struct virtqueue *vq)
{
struct virtio_chan *chan = vq->vdev->priv;
- struct p9_fcall *rc;
unsigned int len;
struct p9_req_t *req;
unsigned long flags;
@@ -152,8 +151,8 @@ static void req_done(struct virtqueue *vq)
while (1) {
spin_lock_irqsave(&chan->lock, flags);
- rc = virtqueue_get_buf(chan->vq, &len);
- if (rc == NULL) {
+ req = virtqueue_get_buf(chan->vq, &len);
+ if (req == NULL) {
spin_unlock_irqrestore(&chan->lock, flags);
break;
}
@@ -161,9 +160,6 @@ static void req_done(struct virtqueue *vq)
spin_unlock_irqrestore(&chan->lock, flags);
/* Wakeup if anyone waiting for VirtIO ring space. */
wake_up(chan->vc_wq);
- p9_debug(P9_DEBUG_TRANS, ": rc %p\n", rc);
- p9_debug(P9_DEBUG_TRANS, ": lookup tag %d\n", rc->tag);
- req = p9_tag_lookup(chan->client, rc->tag);
p9_client_cb(chan->client, req, REQ_STATUS_RCVD);
}
}
@@ -284,7 +280,7 @@ req_retry:
if (in)
sgs[out_sgs + in_sgs++] = chan->sg + out;
- err = virtqueue_add_sgs(chan->vq, sgs, out_sgs, in_sgs, req->tc,
+ err = virtqueue_add_sgs(chan->vq, sgs, out_sgs, in_sgs, req,
GFP_ATOMIC);
if (err < 0) {
if (err == -ENOSPC) {
@@ -369,7 +365,7 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
return -ENOMEM;
*need_drop = 0;
- p -= (*offs = (unsigned long)p % PAGE_SIZE);
+ p -= (*offs = offset_in_page(p));
for (index = 0; index < nr_pages; index++) {
if (is_vmalloc_addr(p))
(*pages)[index] = vmalloc_to_page(p);
@@ -469,7 +465,7 @@ req_retry_pinned:
}
BUG_ON(out_sgs + in_sgs > ARRAY_SIZE(sgs));
- err = virtqueue_add_sgs(chan->vq, sgs, out_sgs, in_sgs, req->tc,
+ err = virtqueue_add_sgs(chan->vq, sgs, out_sgs, in_sgs, req,
GFP_ATOMIC);
if (err < 0) {
if (err == -ENOSPC) {
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index da3cc09f683e..3f6571651d32 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -896,15 +896,9 @@ int rxrpc_request_key(struct rxrpc_sock *rx, char __user *optval, int optlen)
if (optlen <= 0 || optlen > PAGE_SIZE - 1)
return -EINVAL;
- description = kmalloc(optlen + 1, GFP_KERNEL);
- if (!description)
- return -ENOMEM;
-
- if (copy_from_user(description, optval, optlen)) {
- kfree(description);
- return -EFAULT;
- }
- description[optlen] = 0;
+ description = memdup_user_nul(optval, optlen);
+ if (IS_ERR(description))
+ return PTR_ERR(description);
key = request_key(&key_type_rxrpc, description, NULL);
if (IS_ERR(key)) {
@@ -933,15 +927,9 @@ int rxrpc_server_keyring(struct rxrpc_sock *rx, char __user *optval,
if (optlen <= 0 || optlen > PAGE_SIZE - 1)
return -EINVAL;
- description = kmalloc(optlen + 1, GFP_KERNEL);
- if (!description)
- return -ENOMEM;
-
- if (copy_from_user(description, optval, optlen)) {
- kfree(description);
- return -EFAULT;
- }
- description[optlen] = 0;
+ description = memdup_user_nul(optval, optlen);
+ if (IS_ERR(description))
+ return PTR_ERR(description);
key = request_key(&key_type_keyring, description, NULL);
if (IS_ERR(key)) {
diff --git a/security/integrity/iint.c b/security/integrity/iint.c
index 3d2f5b45c8cb..c2e3ccd4b510 100644
--- a/security/integrity/iint.c
+++ b/security/integrity/iint.c
@@ -234,12 +234,13 @@ int __init integrity_read_file(const char *path, char **data)
}
rc = integrity_kernel_read(file, 0, buf, size);
- if (rc < 0)
- kfree(buf);
- else if (rc != size)
- rc = -EIO;
- else
+ if (rc == size) {
*data = buf;
+ } else {
+ kfree(buf);
+ if (rc >= 0)
+ rc = -EIO;
+ }
out:
fput(file);
return rc;
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index c02da25d7b63..73c60baa90a4 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -147,23 +147,16 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf,
ssize_t length;
int new_value;
- length = -ENOMEM;
if (count >= PAGE_SIZE)
- goto out;
+ return -ENOMEM;
/* No partial writes. */
- length = -EINVAL;
if (*ppos != 0)
- goto out;
-
- length = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
+ return -EINVAL;
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out;
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
length = -EINVAL;
if (sscanf(page, "%d", &new_value) != 1)
@@ -186,7 +179,7 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf,
}
length = count;
out:
- free_page((unsigned long) page);
+ kfree(page);
return length;
}
#else
@@ -275,27 +268,20 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- char *page = NULL;
+ char *page;
ssize_t length;
int new_value;
- length = -ENOMEM;
if (count >= PAGE_SIZE)
- goto out;
+ return -ENOMEM;
/* No partial writes. */
- length = -EINVAL;
if (*ppos != 0)
- goto out;
-
- length = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
+ return -EINVAL;
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out;
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
length = -EINVAL;
if (sscanf(page, "%d", &new_value) != 1)
@@ -313,7 +299,7 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf,
length = count;
out:
- free_page((unsigned long) page);
+ kfree(page);
return length;
}
#else
@@ -611,31 +597,24 @@ static ssize_t sel_read_checkreqprot(struct file *filp, char __user *buf,
static ssize_t sel_write_checkreqprot(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- char *page = NULL;
+ char *page;
ssize_t length;
unsigned int new_value;
length = task_has_security(current, SECURITY__SETCHECKREQPROT);
if (length)
- goto out;
+ return length;
- length = -ENOMEM;
if (count >= PAGE_SIZE)
- goto out;
+ return -ENOMEM;
/* No partial writes. */
- length = -EINVAL;
if (*ppos != 0)
- goto out;
-
- length = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
+ return -EINVAL;
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out;
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
length = -EINVAL;
if (sscanf(page, "%u", &new_value) != 1)
@@ -644,7 +623,7 @@ static ssize_t sel_write_checkreqprot(struct file *file, const char __user *buf,
selinux_checkreqprot = new_value ? 1 : 0;
length = count;
out:
- free_page((unsigned long) page);
+ kfree(page);
return length;
}
static const struct file_operations sel_checkreqprot_ops = {
@@ -1100,14 +1079,12 @@ static ssize_t sel_write_bool(struct file *filep, const char __user *buf,
if (*ppos != 0)
goto out;
- length = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
-
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page)) {
+ length = PTR_ERR(page);
+ page = NULL;
goto out;
+ }
length = -EINVAL;
if (sscanf(page, "%d", &new_value) != 1)
@@ -1121,7 +1098,7 @@ static ssize_t sel_write_bool(struct file *filep, const char __user *buf,
out:
mutex_unlock(&sel_mutex);
- free_page((unsigned long) page);
+ kfree(page);
return length;
}
@@ -1154,14 +1131,12 @@ static ssize_t sel_commit_bools_write(struct file *filep,
if (*ppos != 0)
goto out;
- length = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
-
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page)) {
+ length = PTR_ERR(page);
+ page = NULL;
goto out;
+ }
length = -EINVAL;
if (sscanf(page, "%d", &new_value) != 1)
@@ -1176,7 +1151,7 @@ static ssize_t sel_commit_bools_write(struct file *filep,
out:
mutex_unlock(&sel_mutex);
- free_page((unsigned long) page);
+ kfree(page);
return length;
}
@@ -1292,31 +1267,24 @@ static ssize_t sel_write_avc_cache_threshold(struct file *file,
size_t count, loff_t *ppos)
{
- char *page = NULL;
+ char *page;
ssize_t ret;
int new_value;
ret = task_has_security(current, SECURITY__SETSECPARAM);
if (ret)
- goto out;
+ return ret;
- ret = -ENOMEM;
if (count >= PAGE_SIZE)
- goto out;
+ return -ENOMEM;
/* No partial writes. */
- ret = -EINVAL;
if (*ppos != 0)
- goto out;
-
- ret = -ENOMEM;
- page = (char *)get_zeroed_page(GFP_KERNEL);
- if (!page)
- goto out;
+ return -EINVAL;
- ret = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out;
+ page = memdup_user_nul(buf, count);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
ret = -EINVAL;
if (sscanf(page, "%u", &new_value) != 1)
@@ -1326,7 +1294,7 @@ static ssize_t sel_write_avc_cache_threshold(struct file *file,
ret = count;
out:
- free_page((unsigned long)page);
+ kfree(page);
return ret;
}
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 94bd9e41c9ec..e249a66db533 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -497,14 +497,9 @@ static ssize_t smk_write_rules_list(struct file *file, const char __user *buf,
}
}
- data = kmalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto out;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
/*
* In case of parsing only part of user buf,
@@ -884,16 +879,10 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf,
(count < SMK_CIPSOMIN || count > SMK_CIPSOMAX))
return -EINVAL;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto unlockedout;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
- data[count] = '\0';
rule = data;
/*
* Only allow one writer at a time. Writes should be
@@ -946,7 +935,6 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf,
out:
mutex_unlock(&smack_cipso_lock);
-unlockedout:
kfree(data);
return rc;
}
@@ -1187,14 +1175,9 @@ static ssize_t smk_write_net4addr(struct file *file, const char __user *buf,
if (count < SMK_NETLBLADDRMIN)
return -EINVAL;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto free_data_out;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
smack = kzalloc(count + 1, GFP_KERNEL);
if (smack == NULL) {
@@ -1202,8 +1185,6 @@ static ssize_t smk_write_net4addr(struct file *file, const char __user *buf,
goto free_data_out;
}
- data[count] = '\0';
-
rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd/%u %s",
&host[0], &host[1], &host[2], &host[3], &masks, smack);
if (rc != 6) {
@@ -1454,14 +1435,9 @@ static ssize_t smk_write_net6addr(struct file *file, const char __user *buf,
if (count < SMK_NETLBLADDRMIN)
return -EINVAL;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto free_data_out;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
smack = kzalloc(count + 1, GFP_KERNEL);
if (smack == NULL) {
@@ -1469,8 +1445,6 @@ static ssize_t smk_write_net6addr(struct file *file, const char __user *buf,
goto free_data_out;
}
- data[count] = '\0';
-
i = sscanf(data, "%x:%x:%x:%x:%x:%x:%x:%x/%u %s",
&scanned[0], &scanned[1], &scanned[2], &scanned[3],
&scanned[4], &scanned[5], &scanned[6], &scanned[7],
@@ -1865,14 +1839,9 @@ static ssize_t smk_write_ambient(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto out;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
skp = smk_import_entry(data, count);
if (IS_ERR(skp)) {
@@ -2041,14 +2010,9 @@ static ssize_t smk_write_onlycap(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- kfree(data);
- return -EFAULT;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
rc = smk_parse_label_list(data, &list_tmp);
kfree(data);
@@ -2133,14 +2097,9 @@ static ssize_t smk_write_unconfined(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- rc = -EFAULT;
- goto freeout;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
/*
* Clear the smack_unconfined on invalid label errors. This means
@@ -2696,19 +2655,15 @@ static ssize_t smk_write_syslog(struct file *file, const char __user *buf,
if (!smack_privileged(CAP_MAC_ADMIN))
return -EPERM;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
- if (copy_from_user(data, buf, count) != 0)
- rc = -EFAULT;
- else {
- skp = smk_import_entry(data, count);
- if (IS_ERR(skp))
- rc = PTR_ERR(skp);
- else
- smack_syslog_label = skp;
- }
+ skp = smk_import_entry(data, count);
+ if (IS_ERR(skp))
+ rc = PTR_ERR(skp);
+ else
+ smack_syslog_label = skp;
kfree(data);
return rc;
@@ -2798,14 +2753,9 @@ static ssize_t smk_write_relabel_self(struct file *file, const char __user *buf,
if (*ppos != 0)
return -EINVAL;
- data = kzalloc(count + 1, GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- if (copy_from_user(data, buf, count) != 0) {
- kfree(data);
- return -EFAULT;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
rc = smk_parse_label_list(data, &list_tmp);
kfree(data);
diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c
index 179a955b319d..06ab41b1ff28 100644
--- a/security/tomoyo/securityfs_if.c
+++ b/security/tomoyo/securityfs_if.c
@@ -43,13 +43,9 @@ static ssize_t tomoyo_write_self(struct file *file, const char __user *buf,
int error;
if (!count || count >= TOMOYO_EXEC_TMPSIZE - 10)
return -ENOMEM;
- data = kzalloc(count + 1, GFP_NOFS);
- if (!data)
- return -ENOMEM;
- if (copy_from_user(data, buf, count)) {
- error = -EFAULT;
- goto out;
- }
+ data = memdup_user_nul(buf, count);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
tomoyo_normalize_line(data);
if (tomoyo_correct_domain(data)) {
const int idx = tomoyo_read_lock();
@@ -87,7 +83,6 @@ static ssize_t tomoyo_write_self(struct file *file, const char __user *buf,
tomoyo_read_unlock(idx);
} else
error = -EINVAL;
-out:
kfree(data);
return error ? error : count;
}
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