diff options
Diffstat (limited to 'fs')
135 files changed, 772 insertions, 587 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index d7b78d531e63..6a0f3fa85ef7 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -34,7 +34,7 @@ #include <linux/list.h> #include <linux/pagemap.h> #include <linux/utsname.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/idr.h> #include <linux/uio.h> #include <linux/slab.h> diff --git a/fs/afs/proc.c b/fs/afs/proc.c index 2853b4095344..35efb9a31dd7 100644 --- a/fs/afs/proc.c +++ b/fs/afs/proc.c @@ -14,7 +14,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/sched.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" static struct proc_dir_entry *proc_afs; @@ -42,7 +42,7 @@ #include <linux/mount.h> #include <asm/kmap_types.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" @@ -1285,7 +1285,7 @@ static long read_events(struct kioctx *ctx, long min_nr, long nr, struct io_event __user *event, struct timespec __user *timeout) { - ktime_t until = { .tv64 = KTIME_MAX }; + ktime_t until = KTIME_MAX; long ret = 0; if (timeout) { @@ -1311,7 +1311,7 @@ static long read_events(struct kioctx *ctx, long min_nr, long nr, * the ringbuffer empty. So in practice we should be ok, but it's * something to be aware of when touching this code. */ - if (until.tv64 == 0) + if (until == 0) aio_read_events(ctx, min_nr, nr, event, &ret); else wait_event_interruptible_hrtimeout(ctx->wait, @@ -1367,6 +1367,39 @@ out: return ret; } +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_events, u32 __user *, ctx32p) +{ + struct kioctx *ioctx = NULL; + unsigned long ctx; + long ret; + + ret = get_user(ctx, ctx32p); + if (unlikely(ret)) + goto out; + + ret = -EINVAL; + if (unlikely(ctx || nr_events == 0)) { + pr_debug("EINVAL: ctx %lu nr_events %u\n", + ctx, nr_events); + goto out; + } + + ioctx = ioctx_alloc(nr_events); + ret = PTR_ERR(ioctx); + if (!IS_ERR(ioctx)) { + /* truncating is ok because it's a user address */ + ret = put_user((u32)ioctx->user_id, ctx32p); + if (ret) + kill_ioctx(current->mm, ioctx, NULL); + percpu_ref_put(&ioctx->users); + } + +out: + return ret; +} +#endif + /* sys_io_destroy: * Destroy the aio_context specified. May cancel any outstanding * AIOs and block on completion. Will fail with -ENOSYS if not @@ -1591,8 +1624,8 @@ out_put_req: return ret; } -long do_io_submit(aio_context_t ctx_id, long nr, - struct iocb __user *__user *iocbpp, bool compat) +static long do_io_submit(aio_context_t ctx_id, long nr, + struct iocb __user *__user *iocbpp, bool compat) { struct kioctx *ctx; long ret = 0; @@ -1662,6 +1695,44 @@ SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr, return do_io_submit(ctx_id, nr, iocbpp, 0); } +#ifdef CONFIG_COMPAT +static inline long +copy_iocb(long nr, u32 __user *ptr32, struct iocb __user * __user *ptr64) +{ + compat_uptr_t uptr; + int i; + + for (i = 0; i < nr; ++i) { + if (get_user(uptr, ptr32 + i)) + return -EFAULT; + if (put_user(compat_ptr(uptr), ptr64 + i)) + return -EFAULT; + } + return 0; +} + +#define MAX_AIO_SUBMITS (PAGE_SIZE/sizeof(struct iocb *)) + +COMPAT_SYSCALL_DEFINE3(io_submit, compat_aio_context_t, ctx_id, + int, nr, u32 __user *, iocb) +{ + struct iocb __user * __user *iocb64; + long ret; + + if (unlikely(nr < 0)) + return -EINVAL; + + if (nr > MAX_AIO_SUBMITS) + nr = MAX_AIO_SUBMITS; + + iocb64 = compat_alloc_user_space(nr * sizeof(*iocb64)); + ret = copy_iocb(nr, iocb, iocb64); + if (!ret) + ret = do_io_submit(ctx_id, nr, iocb64, 1); + return ret; +} +#endif + /* lookup_kiocb * Finds a given iocb for cancellation. */ @@ -1761,3 +1832,25 @@ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, } return ret; } + +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id, + compat_long_t, min_nr, + compat_long_t, nr, + struct io_event __user *, events, + struct compat_timespec __user *, timeout) +{ + struct timespec t; + struct timespec __user *ut = NULL; + + if (timeout) { + if (compat_get_timespec(&t, timeout)) + return -EFAULT; + + ut = compat_alloc_user_space(sizeof(*ut)); + if (copy_to_user(ut, &t, sizeof(t))) + return -EFAULT; + } + return sys_io_getevents(ctx_id, min_nr, nr, events, ut); +} +#endif diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 80ef38c73e5a..3168ee4e77f4 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -20,7 +20,7 @@ #include <linux/magic.h> #include <linux/anon_inodes.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> static struct vfsmount *anon_inode_mnt __read_mostly; static struct inode *anon_inode_inode; diff --git a/fs/befs/befs.h b/fs/befs/befs.h index c6bad51d8ec7..b914cfb03820 100644 --- a/fs/befs/befs.h +++ b/fs/befs/befs.h @@ -129,6 +129,7 @@ static inline befs_inode_addr blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) { befs_inode_addr iaddr; + iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift; iaddr.start = blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift); @@ -140,7 +141,7 @@ blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno) static inline unsigned int befs_iaddrs_per_block(struct super_block *sb) { - return BEFS_SB(sb)->block_size / sizeof (befs_disk_inode_addr); + return BEFS_SB(sb)->block_size / sizeof(befs_disk_inode_addr); } #include "endian.h" diff --git a/fs/befs/befs_fs_types.h b/fs/befs/befs_fs_types.h index eb557d9dc8be..69c9d8cde955 100644 --- a/fs/befs/befs_fs_types.h +++ b/fs/befs/befs_fs_types.h @@ -55,12 +55,12 @@ enum super_flags { }; #define BEFS_BYTEORDER_NATIVE 0x42494745 -#define BEFS_BYTEORDER_NATIVE_LE (__force fs32)cpu_to_le32(BEFS_BYTEORDER_NATIVE) -#define BEFS_BYTEORDER_NATIVE_BE (__force fs32)cpu_to_be32(BEFS_BYTEORDER_NATIVE) +#define BEFS_BYTEORDER_NATIVE_LE ((__force fs32)cpu_to_le32(BEFS_BYTEORDER_NATIVE)) +#define BEFS_BYTEORDER_NATIVE_BE ((__force fs32)cpu_to_be32(BEFS_BYTEORDER_NATIVE)) #define BEFS_SUPER_MAGIC BEFS_SUPER_MAGIC1 -#define BEFS_SUPER_MAGIC1_LE (__force fs32)cpu_to_le32(BEFS_SUPER_MAGIC1) -#define BEFS_SUPER_MAGIC1_BE (__force fs32)cpu_to_be32(BEFS_SUPER_MAGIC1) +#define BEFS_SUPER_MAGIC1_LE ((__force fs32)cpu_to_le32(BEFS_SUPER_MAGIC1)) +#define BEFS_SUPER_MAGIC1_BE ((__force fs32)cpu_to_be32(BEFS_SUPER_MAGIC1)) /* * Flags of inode @@ -79,7 +79,7 @@ enum inode_flags { BEFS_INODE_WAS_WRITTEN = 0x00020000, BEFS_NO_TRANSACTION = 0x00040000, }; -/* +/* * On-Disk datastructures of BeFS */ @@ -139,7 +139,7 @@ typedef struct { } PACKED befs_super_block; -/* +/* * Note: the indirect and dbl_indir block_runs may * be longer than one block! */ diff --git a/fs/befs/btree.c b/fs/befs/btree.c index 7e135ea73fdd..d509887c580c 100644 --- a/fs/befs/btree.c +++ b/fs/befs/btree.c @@ -12,8 +12,8 @@ * * Dominic Giampaolo, author of "Practical File System * Design with the Be File System", for such a helpful book. - * - * Marcus J. Ranum, author of the b+tree package in + * + * Marcus J. Ranum, author of the b+tree package in * comp.sources.misc volume 10. This code is not copied from that * work, but it is partially based on it. * @@ -38,38 +38,38 @@ */ /* Befs B+tree structure: - * + * * The first thing in the tree is the tree superblock. It tells you * all kinds of useful things about the tree, like where the rootnode * is located, and the size of the nodes (always 1024 with current version * of BeOS). * * The rest of the tree consists of a series of nodes. Nodes contain a header - * (struct befs_btree_nodehead), the packed key data, an array of shorts + * (struct befs_btree_nodehead), the packed key data, an array of shorts * containing the ending offsets for each of the keys, and an array of - * befs_off_t values. In interior nodes, the keys are the ending keys for - * the childnode they point to, and the values are offsets into the - * datastream containing the tree. + * befs_off_t values. In interior nodes, the keys are the ending keys for + * the childnode they point to, and the values are offsets into the + * datastream containing the tree. */ /* Note: - * - * The book states 2 confusing things about befs b+trees. First, + * + * The book states 2 confusing things about befs b+trees. First, * it states that the overflow field of node headers is used by internal nodes * to point to another node that "effectively continues this one". Here is what * I believe that means. Each key in internal nodes points to another node that - * contains key values less than itself. Inspection reveals that the last key - * in the internal node is not the last key in the index. Keys that are - * greater than the last key in the internal node go into the overflow node. + * contains key values less than itself. Inspection reveals that the last key + * in the internal node is not the last key in the index. Keys that are + * greater than the last key in the internal node go into the overflow node. * I imagine there is a performance reason for this. * - * Second, it states that the header of a btree node is sufficient to - * distinguish internal nodes from leaf nodes. Without saying exactly how. + * Second, it states that the header of a btree node is sufficient to + * distinguish internal nodes from leaf nodes. Without saying exactly how. * After figuring out the first, it becomes obvious that internal nodes have * overflow nodes and leafnodes do not. */ -/* +/* * Currently, this code is only good for directory B+trees. * In order to be used for other BFS indexes, it needs to be extended to handle * duplicate keys and non-string keytypes (int32, int64, float, double). @@ -237,8 +237,8 @@ befs_bt_read_node(struct super_block *sb, const befs_data_stream *ds, * with @key (usually the disk block number of an inode). * * On failure, returns BEFS_ERR or BEFS_BT_NOT_FOUND. - * - * Algorithm: + * + * Algorithm: * Read the superblock and rootnode of the b+tree. * Drill down through the interior nodes using befs_find_key(). * Once at the correct leaf node, use befs_find_key() again to get the @@ -402,12 +402,12 @@ befs_find_key(struct super_block *sb, struct befs_btree_node *node, * * Here's how it works: Key_no is the index of the key/value pair to * return in keybuf/value. - * Bufsize is the size of keybuf (BEFS_NAME_LEN+1 is a good size). Keysize is + * Bufsize is the size of keybuf (BEFS_NAME_LEN+1 is a good size). Keysize is * the number of characters in the key (just a convenience). * * Algorithm: * Get the first leafnode of the tree. See if the requested key is in that - * node. If not, follow the node->right link to the next leafnode. Repeat + * node. If not, follow the node->right link to the next leafnode. Repeat * until the (key_no)th key is found or the tree is out of keys. */ int @@ -536,7 +536,7 @@ befs_btree_read(struct super_block *sb, const befs_data_stream *ds, * @node_off: Pointer to offset of current node within datastream. Modified * by the function. * - * Helper function for btree traverse. Moves the current position to the + * Helper function for btree traverse. Moves the current position to the * start of the first leaf node. * * Also checks for an empty tree. If there are no keys, returns BEFS_BT_EMPTY. @@ -592,10 +592,10 @@ befs_btree_seekleaf(struct super_block *sb, const befs_data_stream *ds, } /** - * befs_leafnode - Determine if the btree node is a leaf node or an + * befs_leafnode - Determine if the btree node is a leaf node or an * interior node * @node: Pointer to node structure to test - * + * * Return 1 if leaf, 0 if interior */ static int @@ -656,7 +656,7 @@ befs_bt_valarray(struct befs_btree_node *node) * @node: Pointer to the node structure to find the keydata array within * * Returns a pointer to the start of the keydata array - * of the node pointed to by the node header + * of the node pointed to by the node header */ static char * befs_bt_keydata(struct befs_btree_node *node) @@ -702,7 +702,7 @@ befs_bt_get_key(struct super_block *sb, struct befs_btree_node *node, /** * befs_compare_strings - compare two strings - * @key1: pointer to the first key to be compared + * @key1: pointer to the first key to be compared * @keylen1: length in bytes of key1 * @key2: pointer to the second key to be compared * @keylen2: length in bytes of key2 diff --git a/fs/befs/btree.h b/fs/befs/btree.h index f2a8f637e9e0..60c6c728e64e 100644 --- a/fs/befs/btree.h +++ b/fs/befs/btree.h @@ -1,13 +1,11 @@ /* * btree.h - * + * */ - int befs_btree_find(struct super_block *sb, const befs_data_stream *ds, - const char *key, befs_off_t * value); + const char *key, befs_off_t *value); int befs_btree_read(struct super_block *sb, const befs_data_stream *ds, loff_t key_no, size_t bufsize, char *keybuf, - size_t * keysize, befs_off_t * value); - + size_t *keysize, befs_off_t *value); diff --git a/fs/befs/datastream.c b/fs/befs/datastream.c index b4c7ba013c0d..720b3bc5c16a 100644 --- a/fs/befs/datastream.c +++ b/fs/befs/datastream.c @@ -84,13 +84,11 @@ befs_read_datastream(struct super_block *sb, const befs_data_stream *ds, * * Takes a file position and gives back a brun who's starting block * is block number fblock of the file. - * + * * Returns BEFS_OK or BEFS_ERR. - * + * * Calls specialized functions for each of the three possible * datastream regions. - * - * 2001-11-15 Will Dyson */ int befs_fblock2brun(struct super_block *sb, const befs_data_stream *data, @@ -120,7 +118,7 @@ befs_fblock2brun(struct super_block *sb, const befs_data_stream *data, /** * befs_read_lsmylink - read long symlink from datastream. - * @sb: Filesystem superblock + * @sb: Filesystem superblock * @ds: Datastream to read from * @buff: Buffer in which to place long symlink data * @len: Length of the long symlink in bytes diff --git a/fs/befs/datastream.h b/fs/befs/datastream.h index 91ba8203d83f..7ff9ff09ec6e 100644 --- a/fs/befs/datastream.h +++ b/fs/befs/datastream.h @@ -5,10 +5,10 @@ struct buffer_head *befs_read_datastream(struct super_block *sb, const befs_data_stream *ds, - befs_off_t pos, uint * off); + befs_off_t pos, uint *off); int befs_fblock2brun(struct super_block *sb, const befs_data_stream *data, - befs_blocknr_t fblock, befs_block_run * run); + befs_blocknr_t fblock, befs_block_run *run); size_t befs_read_lsymlink(struct super_block *sb, const befs_data_stream *data, void *buff, befs_off_t len); @@ -17,4 +17,3 @@ befs_blocknr_t befs_count_blocks(struct super_block *sb, const befs_data_stream *ds); extern const befs_inode_addr BAD_IADDR; - diff --git a/fs/befs/debug.c b/fs/befs/debug.c index 85c13392e9e8..36656c86f50e 100644 --- a/fs/befs/debug.c +++ b/fs/befs/debug.c @@ -1,6 +1,6 @@ /* * linux/fs/befs/debug.c - * + * * Copyright (C) 2001 Will Dyson (will_dyson at pobox.com) * * With help from the ntfs-tng driver by Anton Altparmakov @@ -57,6 +57,7 @@ befs_debug(const struct super_block *sb, const char *fmt, ...) struct va_format vaf; va_list args; + va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; @@ -67,7 +68,7 @@ befs_debug(const struct super_block *sb, const char *fmt, ...) } void -befs_dump_inode(const struct super_block *sb, befs_inode * inode) +befs_dump_inode(const struct super_block *sb, befs_inode *inode) { #ifdef CONFIG_BEFS_DEBUG @@ -151,7 +152,7 @@ befs_dump_inode(const struct super_block *sb, befs_inode * inode) */ void -befs_dump_super_block(const struct super_block *sb, befs_super_block * sup) +befs_dump_super_block(const struct super_block *sb, befs_super_block *sup) { #ifdef CONFIG_BEFS_DEBUG @@ -202,7 +203,7 @@ befs_dump_super_block(const struct super_block *sb, befs_super_block * sup) #if 0 /* unused */ void -befs_dump_small_data(const struct super_block *sb, befs_small_data * sd) +befs_dump_small_data(const struct super_block *sb, befs_small_data *sd) { } @@ -221,7 +222,8 @@ befs_dump_run(const struct super_block *sb, befs_disk_block_run run) #endif /* 0 */ void -befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super * super) +befs_dump_index_entry(const struct super_block *sb, + befs_disk_btree_super *super) { #ifdef CONFIG_BEFS_DEBUG @@ -242,7 +244,7 @@ befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super * supe } void -befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead * node) +befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *node) { #ifdef CONFIG_BEFS_DEBUG diff --git a/fs/befs/inode.c b/fs/befs/inode.c index fa4b718de597..5367a6470a69 100644 --- a/fs/befs/inode.c +++ b/fs/befs/inode.c @@ -1,6 +1,6 @@ /* * inode.c - * + * * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com> */ @@ -10,12 +10,12 @@ #include "inode.h" /* - Validates the correctness of the befs inode - Returns BEFS_OK if the inode should be used, otherwise - returns BEFS_BAD_INODE -*/ + * Validates the correctness of the befs inode + * Returns BEFS_OK if the inode should be used, otherwise + * returns BEFS_BAD_INODE + */ int -befs_check_inode(struct super_block *sb, befs_inode * raw_inode, +befs_check_inode(struct super_block *sb, befs_inode *raw_inode, befs_blocknr_t inode) { u32 magic1 = fs32_to_cpu(sb, raw_inode->magic1); diff --git a/fs/befs/inode.h b/fs/befs/inode.h index 9dc7fd9b7570..2219e412f49b 100644 --- a/fs/befs/inode.h +++ b/fs/befs/inode.h @@ -1,8 +1,7 @@ /* * inode.h - * + * */ -int befs_check_inode(struct super_block *sb, befs_inode * raw_inode, +int befs_check_inode(struct super_block *sb, befs_inode *raw_inode, befs_blocknr_t inode); - diff --git a/fs/befs/io.c b/fs/befs/io.c index b4a558126ee1..227cb86e07fe 100644 --- a/fs/befs/io.c +++ b/fs/befs/io.c @@ -3,7 +3,7 @@ * * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com * - * Based on portions of file.c and inode.c + * Based on portions of file.c and inode.c * by Makoto Kato (m_kato@ga2.so-net.ne.jp) * * Many thanks to Dominic Giampaolo, author of Practical File System @@ -19,8 +19,7 @@ /* * Converts befs notion of disk addr to a disk offset and uses * linux kernel function sb_bread() to get the buffer containing - * the offset. -Will Dyson - * + * the offset. */ struct buffer_head * @@ -55,7 +54,7 @@ befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr) befs_debug(sb, "<--- %s", __func__); return bh; - error: +error: befs_debug(sb, "<--- %s ERROR", __func__); return NULL; } diff --git a/fs/befs/io.h b/fs/befs/io.h index 78d7bc6e60de..9b3e1967cb31 100644 --- a/fs/befs/io.h +++ b/fs/befs/io.h @@ -4,4 +4,3 @@ struct buffer_head *befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr); - diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 647a276eba56..19407165f4aa 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -18,6 +18,7 @@ #include <linux/parser.h> #include <linux/namei.h> #include <linux/sched.h> +#include <linux/exportfs.h> #include "befs.h" #include "btree.h" @@ -37,7 +38,8 @@ static int befs_readdir(struct file *, struct dir_context *); static int befs_get_block(struct inode *, sector_t, struct buffer_head *, int); static int befs_readpage(struct file *file, struct page *page); static sector_t befs_bmap(struct address_space *mapping, sector_t block); -static struct dentry *befs_lookup(struct inode *, struct dentry *, unsigned int); +static struct dentry *befs_lookup(struct inode *, struct dentry *, + unsigned int); static struct inode *befs_iget(struct super_block *, unsigned long); static struct inode *befs_alloc_inode(struct super_block *sb); static void befs_destroy_inode(struct inode *inode); @@ -51,6 +53,10 @@ static void befs_put_super(struct super_block *); static int befs_remount(struct super_block *, int *, char *); static int befs_statfs(struct dentry *, struct kstatfs *); static int parse_options(char *, struct befs_mount_options *); +static struct dentry *befs_fh_to_dentry(struct super_block *sb, + struct fid *fid, int fh_len, int fh_type); +static struct dentry *befs_fh_to_parent(struct super_block *sb, + struct fid *fid, int fh_len, int fh_type); static const struct super_operations befs_sops = { .alloc_inode = befs_alloc_inode, /* allocate a new inode */ @@ -83,9 +89,14 @@ static const struct address_space_operations befs_symlink_aops = { .readpage = befs_symlink_readpage, }; -/* +static const struct export_operations befs_export_operations = { + .fh_to_dentry = befs_fh_to_dentry, + .fh_to_parent = befs_fh_to_parent, +}; + +/* * Called by generic_file_read() to read a page of data - * + * * In turn, simply calls a generic block read function and * passes it the address of befs_get_block, for mapping file * positions to disk blocks. @@ -102,15 +113,13 @@ befs_bmap(struct address_space *mapping, sector_t block) return generic_block_bmap(mapping, block, befs_get_block); } -/* - * Generic function to map a file position (block) to a +/* + * Generic function to map a file position (block) to a * disk offset (passed back in bh_result). * * Used by many higher level functions. * * Calls befs_fblock2brun() in datastream.c to do the real work. - * - * -WD 10-26-01 */ static int @@ -269,15 +278,15 @@ befs_alloc_inode(struct super_block *sb) struct befs_inode_info *bi; bi = kmem_cache_alloc(befs_inode_cachep, GFP_KERNEL); - if (!bi) - return NULL; - return &bi->vfs_inode; + if (!bi) + return NULL; + return &bi->vfs_inode; } static void befs_i_callback(struct rcu_head *head) { struct inode *inode = container_of(head, struct inode, i_rcu); - kmem_cache_free(befs_inode_cachep, BEFS_I(inode)); + kmem_cache_free(befs_inode_cachep, BEFS_I(inode)); } static void befs_destroy_inode(struct inode *inode) @@ -287,7 +296,7 @@ static void befs_destroy_inode(struct inode *inode) static void init_once(void *foo) { - struct befs_inode_info *bi = (struct befs_inode_info *) foo; + struct befs_inode_info *bi = (struct befs_inode_info *) foo; inode_init_once(&bi->vfs_inode); } @@ -338,7 +347,7 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) /* * set uid and gid. But since current BeOS is single user OS, so * you can change by "uid" or "gid" options. - */ + */ inode->i_uid = befs_sb->mount_opts.use_uid ? befs_sb->mount_opts.uid : @@ -353,14 +362,14 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) * BEFS's time is 64 bits, but current VFS is 32 bits... * BEFS don't have access time. Nor inode change time. VFS * doesn't have creation time. - * Also, the lower 16 bits of the last_modified_time and + * Also, the lower 16 bits of the last_modified_time and * create_time are just a counter to help ensure uniqueness * for indexing purposes. (PFD, page 54) */ inode->i_mtime.tv_sec = fs64_to_cpu(sb, raw_inode->last_modified_time) >> 16; - inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */ + inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */ inode->i_ctime = inode->i_mtime; inode->i_atime = inode->i_mtime; @@ -414,10 +423,10 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) unlock_new_inode(inode); return inode; - unacquire_bh: +unacquire_bh: brelse(bh); - unacquire_none: +unacquire_none: iget_failed(inode); befs_debug(sb, "<--- %s - Bad inode", __func__); return ERR_PTR(-EIO); @@ -442,7 +451,7 @@ befs_init_inodecache(void) } /* Called at fs teardown. - * + * * Taken from NFS implementation by Al Viro. */ static void @@ -491,13 +500,10 @@ fail: } /* - * UTF-8 to NLS charset convert routine - * + * UTF-8 to NLS charset convert routine * - * Changed 8/10/01 by Will Dyson. Now use uni2char() / char2uni() rather than - * the nls tables directly + * Uses uni2char() / char2uni() rather than the nls tables directly */ - static int befs_utf2nls(struct super_block *sb, const char *in, int in_len, char **out, int *out_len) @@ -521,9 +527,8 @@ befs_utf2nls(struct super_block *sb, const char *in, } *out = result = kmalloc(maxlen, GFP_NOFS); - if (!*out) { + if (!*out) return -ENOMEM; - } for (i = o = 0; i < in_len; i += utflen, o += unilen) { @@ -546,7 +551,7 @@ befs_utf2nls(struct super_block *sb, const char *in, return o; - conv_err: +conv_err: befs_error(sb, "Name using character set %s contains a character that " "cannot be converted to unicode.", nls->charset); befs_debug(sb, "<--- %s", __func__); @@ -561,18 +566,18 @@ befs_utf2nls(struct super_block *sb, const char *in, * @in_len: Length of input string in bytes * @out: The output string in UTF-8 format * @out_len: Length of the output buffer - * + * * Converts input string @in, which is in the format of the loaded NLS map, * into a utf8 string. - * + * * The destination string @out is allocated by this function and the caller is * responsible for freeing it with kfree() - * + * * On return, *@out_len is the length of @out in bytes. * * On success, the return value is the number of utf8 characters written to * the output buffer @out. - * + * * On Failure, a negative number coresponding to the error code is returned. */ @@ -585,9 +590,11 @@ befs_nls2utf(struct super_block *sb, const char *in, wchar_t uni; int unilen, utflen; char *result; - /* There're nls characters that will translate to 3-chars-wide UTF-8 - * characters, a additional byte is needed to save the final \0 - * in special cases */ + /* + * There are nls characters that will translate to 3-chars-wide UTF-8 + * characters, an additional byte is needed to save the final \0 + * in special cases + */ int maxlen = (3 * in_len) + 1; befs_debug(sb, "---> %s\n", __func__); @@ -624,14 +631,41 @@ befs_nls2utf(struct super_block *sb, const char *in, return i; - conv_err: - befs_error(sb, "Name using charecter set %s contains a charecter that " +conv_err: + befs_error(sb, "Name using character set %s contains a character that " "cannot be converted to unicode.", nls->charset); befs_debug(sb, "<--- %s", __func__); kfree(result); return -EILSEQ; } +static struct inode *befs_nfs_get_inode(struct super_block *sb, uint64_t ino, + uint32_t generation) +{ + /* No need to handle i_generation */ + return befs_iget(sb, ino); +} + +/* + * Map a NFS file handle to a corresponding dentry + */ +static struct dentry *befs_fh_to_dentry(struct super_block *sb, + struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_dentry(sb, fid, fh_len, fh_type, + befs_nfs_get_inode); +} + +/* + * Find the parent for a file specified by NFS handle + */ +static struct dentry *befs_fh_to_parent(struct super_block *sb, + struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_parent(sb, fid, fh_len, fh_type, + befs_nfs_get_inode); +} + enum { Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err, }; @@ -666,6 +700,7 @@ parse_options(char *options, struct befs_mount_options *opts) while ((p = strsep(&options, ",")) != NULL) { int token; + if (!*p) continue; @@ -721,7 +756,7 @@ parse_options(char *options, struct befs_mount_options *opts) } /* This function has the responsibiltiy of getting the - * filesystem ready for unmounting. + * filesystem ready for unmounting. * Basically, we free everything that we allocated in * befs_read_inode */ @@ -782,8 +817,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) * Linux 2.4.10 and later refuse to read blocks smaller than * the logical block size for the device. But we also need to read at * least 1k to get the second 512 bytes of the volume. - * -WD 10-26-01 - */ + */ blocksize = sb_min_blocksize(sb, 1024); if (!blocksize) { if (!silent) @@ -791,7 +825,8 @@ befs_fill_super(struct super_block *sb, void *data, int silent) goto unacquire_priv_sbp; } - if (!(bh = sb_bread(sb, sb_block))) { + bh = sb_bread(sb, sb_block); + if (!bh) { if (!silent) befs_error(sb, "unable to read superblock"); goto unacquire_priv_sbp; @@ -816,7 +851,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) brelse(bh); - if( befs_sb->num_blocks > ~((sector_t)0) ) { + if (befs_sb->num_blocks > ~((sector_t)0)) { if (!silent) befs_error(sb, "blocks count: %llu is larger than the host can use", befs_sb->num_blocks); @@ -831,6 +866,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) /* Set real blocksize of fs */ sb_set_blocksize(sb, (ulong) befs_sb->block_size); sb->s_op = &befs_sops; + sb->s_export_op = &befs_export_operations; root = befs_iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir))); if (IS_ERR(root)) { ret = PTR_ERR(root); @@ -861,16 +897,16 @@ befs_fill_super(struct super_block *sb, void *data, int silent) } return 0; -/*****************/ - unacquire_bh: + +unacquire_bh: brelse(bh); - unacquire_priv_sbp: +unacquire_priv_sbp: kfree(befs_sb->mount_opts.iocharset); kfree(sb->s_fs_info); sb->s_fs_info = NULL; - unacquire_none: +unacquire_none: return ret; } @@ -919,7 +955,7 @@ static struct file_system_type befs_fs_type = { .name = "befs", .mount = befs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("befs"); @@ -956,9 +992,9 @@ exit_befs_fs(void) } /* -Macros that typecheck the init and exit functions, -ensures that they are called at init and cleanup, -and eliminates warnings about unused functions. -*/ + * Macros that typecheck the init and exit functions, + * ensures that they are called at init and cleanup, + * and eliminates warnings about unused functions. + */ module_init(init_befs_fs) module_exit(exit_befs_fs) diff --git a/fs/befs/super.h b/fs/befs/super.h index dc4556376a22..ec1df30a7e9a 100644 --- a/fs/befs/super.h +++ b/fs/befs/super.h @@ -2,7 +2,5 @@ * super.h */ -int befs_load_sb(struct super_block *sb, befs_super_block * disk_sb); - +int befs_load_sb(struct super_block *sb, befs_super_block *disk_sb); int befs_check_sb(struct super_block *sb); - diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 1e5c896f6b79..f2deec0a62f0 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -16,7 +16,7 @@ #include <linux/vfs.h> #include <linux/writeback.h> #include <linux/uio.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "bfs.h" MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>"); diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index ae1b5404fced..2a59139f520b 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -26,7 +26,7 @@ #include <linux/coredump.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/cacheflush.h> #include <asm/a.out-core.h> diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index e6c1bd443806..29a02daf08a9 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -36,7 +36,7 @@ #include <linux/coredump.h> #include <linux/sched.h> #include <linux/dax.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/param.h> #include <asm/page.h> diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index 464a972e88c1..d2e36f82c35d 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -37,7 +37,7 @@ #include <linux/coredump.h> #include <linux/dax.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/param.h> #include <asm/pgalloc.h> diff --git a/fs/block_dev.c b/fs/block_dev.c index 206a92aab52e..5db5d1340d69 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -32,7 +32,7 @@ #include <linux/badblocks.h> #include <linux/task_io_accounting_ops.h> #include <linux/falloc.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" struct bdev_inode { diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 3d03e48a9213..9727e1dcacd5 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -24,7 +24,7 @@ #include <linux/ctype.h> #include <linux/module.h> #include <linux/proc_fs.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h" diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 5eb04129f938..66bd7fa9b7a6 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -699,11 +699,15 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) { if (!ses->domainName) { - rc = find_domain_name(ses, nls_cp); - if (rc) { - cifs_dbg(VFS, "error %d finding domain name\n", - rc); - goto setup_ntlmv2_rsp_ret; + if (ses->domainAuto) { + rc = find_domain_name(ses, nls_cp); + if (rc) { + cifs_dbg(VFS, "error %d finding domain name\n", + rc); + goto setup_ntlmv2_rsp_ret; + } + } else { + ses->domainName = kstrdup("", GFP_KERNEL); } } } else { diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index e6efb9a88598..70f4e65fced2 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -615,7 +615,7 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb) return dget(sb->s_root); full_path = cifs_build_path_to_root(vol, cifs_sb, - cifs_sb_master_tcon(cifs_sb)); + cifs_sb_master_tcon(cifs_sb), 0); if (full_path == NULL) return ERR_PTR(-ENOMEM); diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 1f17f6bd7a60..7ea8a3393936 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -514,6 +514,7 @@ struct smb_vol { bool persistent:1; bool nopersistent:1; bool resilient:1; /* noresilient not required since not fored for CA */ + bool domainauto:1; unsigned int rsize; unsigned int wsize; bool sockopt_tcp_nodelay:1; @@ -525,6 +526,7 @@ struct smb_vol { struct sockaddr_storage srcaddr; /* allow binding to a local IP */ struct nls_table *local_nls; unsigned int echo_interval; /* echo interval in secs */ + __u64 snapshot_time; /* needed for timewarp tokens */ unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ }; @@ -646,6 +648,8 @@ struct TCP_Server_Info { unsigned int max_read; unsigned int max_write; __u8 preauth_hash[512]; + struct delayed_work reconnect; /* reconnect workqueue job */ + struct mutex reconnect_mutex; /* prevent simultaneous reconnects */ #endif /* CONFIG_CIFS_SMB2 */ unsigned long echo_interval; }; @@ -827,6 +831,7 @@ struct cifs_ses { enum securityEnum sectype; /* what security flavor was specified? */ bool sign; /* is signing required? */ bool need_reconnect:1; /* connection reset, uid now invalid */ + bool domainAuto:1; #ifdef CONFIG_CIFS_SMB2 __u16 session_flags; __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; @@ -849,6 +854,7 @@ cap_unix(struct cifs_ses *ses) struct cifs_tcon { struct list_head tcon_list; int tc_count; + struct list_head rlist; /* reconnect list */ struct list_head openFileList; spinlock_t open_file_lock; /* protects list above */ struct cifs_ses *ses; /* pointer to session associated with */ @@ -922,6 +928,7 @@ struct cifs_tcon { bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */ bool broken_sparse_sup; /* if server or share does not support sparse */ bool need_reconnect:1; /* connection reset, tid now invalid */ + bool need_reopen_files:1; /* need to reopen tcon file handles */ bool use_resilient:1; /* use resilient instead of durable handles */ bool use_persistent:1; /* use persistent instead of durable handles */ #ifdef CONFIG_CIFS_SMB2 @@ -932,6 +939,7 @@ struct cifs_tcon { __u32 maximal_access; __u32 vol_serial_number; __le64 vol_create_time; + __u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */ __u32 ss_flags; /* sector size flags */ __u32 perf_sector_size; /* best sector size for perf */ __u32 max_chunks; diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index ced0e42ce460..c7b3c841e660 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -63,7 +63,8 @@ extern void exit_cifs_spnego(void); extern char *build_path_from_dentry(struct dentry *); extern char *cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, - struct cifs_tcon *tcon); + struct cifs_tcon *tcon, + int add_treename); extern char *build_wildcard_path_from_dentry(struct dentry *direntry); extern char *cifs_compose_mount_options(const char *sb_mountdata, const char *fullpath, const struct dfs_info3_param *ref, @@ -206,6 +207,9 @@ extern void cifs_add_pending_open_locked(struct cifs_fid *fid, struct tcon_link *tlink, struct cifs_pending_open *open); extern void cifs_del_pending_open(struct cifs_pending_open *open); +extern void cifs_put_tcp_session(struct TCP_Server_Info *server, + int from_reconnect); +extern void cifs_put_tcon(struct cifs_tcon *tcon); #if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) extern void cifs_dfs_release_automount_timer(void); diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index e3fed9249a04..b47261858e6d 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -35,7 +35,7 @@ #include <linux/pagemap.h> #include <linux/swap.h> #include <linux/task_io_accounting_ops.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "cifspdu.h" #include "cifsglob.h" #include "cifsacl.h" diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index f7563c88c917..35ae49ed1f76 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -34,7 +34,7 @@ #include <linux/pagevec.h> #include <linux/freezer.h> #include <linux/namei.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/processor.h> #include <linux/inet.h> #include <linux/module.h> @@ -53,6 +53,9 @@ #include "nterr.h" #include "rfc1002pdu.h" #include "fscache.h" +#ifdef CONFIG_CIFS_SMB2 +#include "smb2proto.h" +#endif #define CIFS_PORT 445 #define RFC1001_PORT 139 @@ -89,6 +92,7 @@ enum { Opt_multiuser, Opt_sloppy, Opt_nosharesock, Opt_persistent, Opt_nopersistent, Opt_resilient, Opt_noresilient, + Opt_domainauto, /* Mount options which take numeric value */ Opt_backupuid, Opt_backupgid, Opt_uid, @@ -96,6 +100,7 @@ enum { Opt_dirmode, Opt_port, Opt_rsize, Opt_wsize, Opt_actimeo, Opt_echo_interval, Opt_max_credits, + Opt_snapshot, /* Mount options which take string value */ Opt_user, Opt_pass, Opt_ip, @@ -177,6 +182,7 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_nopersistent, "nopersistenthandles"}, { Opt_resilient, "resilienthandles"}, { Opt_noresilient, "noresilienthandles"}, + { Opt_domainauto, "domainauto"}, { Opt_backupuid, "backupuid=%s" }, { Opt_backupgid, "backupgid=%s" }, @@ -192,6 +198,7 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_actimeo, "actimeo=%s" }, { Opt_echo_interval, "echo_interval=%s" }, { Opt_max_credits, "max_credits=%s" }, + { Opt_snapshot, "snapshot=%s" }, { Opt_blank_user, "user=" }, { Opt_blank_user, "username=" }, @@ -1500,6 +1507,9 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, case Opt_noresilient: vol->resilient = false; /* already the default */ break; + case Opt_domainauto: + vol->domainauto = true; + break; /* Numeric Values */ case Opt_backupuid: @@ -1602,6 +1612,14 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, } vol->echo_interval = option; break; + case Opt_snapshot: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid snapshot time\n", + __func__); + goto cifs_parse_mount_err; + } + vol->snapshot_time = option; + break; case Opt_max_credits: if (get_option_ul(args, &option) || (option < 20) || (option > 60000)) { @@ -2101,8 +2119,8 @@ cifs_find_tcp_session(struct smb_vol *vol) return NULL; } -static void -cifs_put_tcp_session(struct TCP_Server_Info *server) +void +cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect) { struct task_struct *task; @@ -2119,6 +2137,19 @@ cifs_put_tcp_session(struct TCP_Server_Info *server) cancel_delayed_work_sync(&server->echo); +#ifdef CONFIG_CIFS_SMB2 + if (from_reconnect) + /* + * Avoid deadlock here: reconnect work calls + * cifs_put_tcp_session() at its end. Need to be sure + * that reconnect work does nothing with server pointer after + * that step. + */ + cancel_delayed_work(&server->reconnect); + else + cancel_delayed_work_sync(&server->reconnect); +#endif + spin_lock(&GlobalMid_Lock); server->tcpStatus = CifsExiting; spin_unlock(&GlobalMid_Lock); @@ -2183,6 +2214,10 @@ cifs_get_tcp_session(struct smb_vol *volume_info) INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); INIT_LIST_HEAD(&tcp_ses->smb_ses_list); INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); +#ifdef CONFIG_CIFS_SMB2 + INIT_DELAYED_WORK(&tcp_ses->reconnect, smb2_reconnect_server); + mutex_init(&tcp_ses->reconnect_mutex); +#endif memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr, sizeof(tcp_ses->srcaddr)); memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr, @@ -2341,7 +2376,7 @@ cifs_put_smb_ses(struct cifs_ses *ses) spin_unlock(&cifs_tcp_ses_lock); sesInfoFree(ses); - cifs_put_tcp_session(server); + cifs_put_tcp_session(server, 0); } #ifdef CONFIG_KEYS @@ -2515,7 +2550,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) mutex_unlock(&ses->session_mutex); /* existing SMB ses has a server reference already */ - cifs_put_tcp_session(server); + cifs_put_tcp_session(server, 0); free_xid(xid); return ses; } @@ -2549,6 +2584,8 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) if (!ses->domainName) goto get_ses_fail; } + if (volume_info->domainauto) + ses->domainAuto = volume_info->domainauto; ses->cred_uid = volume_info->cred_uid; ses->linux_uid = volume_info->linux_uid; @@ -2587,7 +2624,7 @@ static int match_tcon(struct cifs_tcon *tcon, const char *unc) } static struct cifs_tcon * -cifs_find_tcon(struct cifs_ses *ses, const char *unc) +cifs_find_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) { struct list_head *tmp; struct cifs_tcon *tcon; @@ -2595,8 +2632,14 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc) spin_lock(&cifs_tcp_ses_lock); list_for_each(tmp, &ses->tcon_list) { tcon = list_entry(tmp, struct cifs_tcon, tcon_list); - if (!match_tcon(tcon, unc)) + if (!match_tcon(tcon, volume_info->UNC)) continue; + +#ifdef CONFIG_CIFS_SMB2 + if (tcon->snapshot_time != volume_info->snapshot_time) + continue; +#endif /* CONFIG_CIFS_SMB2 */ + ++tcon->tc_count; spin_unlock(&cifs_tcp_ses_lock); return tcon; @@ -2605,7 +2648,7 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc) return NULL; } -static void +void cifs_put_tcon(struct cifs_tcon *tcon) { unsigned int xid; @@ -2637,7 +2680,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) int rc, xid; struct cifs_tcon *tcon; - tcon = cifs_find_tcon(ses, volume_info->UNC); + tcon = cifs_find_tcon(ses, volume_info); if (tcon) { cifs_dbg(FYI, "Found match on UNC path\n"); /* existing tcon already has a reference */ @@ -2658,6 +2701,22 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) goto out_fail; } + if (volume_info->snapshot_time) { +#ifdef CONFIG_CIFS_SMB2 + if (ses->server->vals->protocol_id == 0) { + cifs_dbg(VFS, + "Use SMB2 or later for snapshot mount option\n"); + rc = -EOPNOTSUPP; + goto out_fail; + } else + tcon->snapshot_time = volume_info->snapshot_time; +#else + cifs_dbg(VFS, "Snapshot mount option requires SMB2 support\n"); + rc = -EOPNOTSUPP; + goto out_fail; +#endif /* CONFIG_CIFS_SMB2 */ + } + tcon->ses = ses; if (volume_info->password) { tcon->password = kstrdup(volume_info->password, GFP_KERNEL); @@ -3707,7 +3766,8 @@ remote_path_check: /* * cifs_build_path_to_root works only when we have a valid tcon */ - full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon); + full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon, + tcon->Flags & SMB_SHARE_IS_IN_DFS); if (full_path == NULL) { rc = -ENOMEM; goto mount_fail_check; @@ -3793,7 +3853,7 @@ mount_fail_check: else if (ses) cifs_put_smb_ses(ses); else - cifs_put_tcp_session(server); + cifs_put_tcp_session(server, 0); bdi_destroy(&cifs_sb->bdi); } @@ -4104,7 +4164,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info); if (IS_ERR(ses)) { tcon = (struct cifs_tcon *)ses; - cifs_put_tcp_session(master_tcon->ses->server); + cifs_put_tcp_session(master_tcon->ses->server, 0); goto out; } diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 789ff1df2d8d..2c227a99f369 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -47,7 +47,7 @@ renew_parental_timestamps(struct dentry *direntry) char * cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, - struct cifs_tcon *tcon) + struct cifs_tcon *tcon, int add_treename) { int pplen = vol->prepath ? strlen(vol->prepath) + 1 : 0; int dfsplen; @@ -59,7 +59,7 @@ cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, return full_path; } - if (tcon->Flags & SMB_SHARE_IS_IN_DFS) + if (add_treename) dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); else dfsplen = 0; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 7f5f6176c6f1..18a1e1d6671f 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -777,6 +777,11 @@ cifs_reopen_persistent_handles(struct cifs_tcon *tcon) struct list_head *tmp1; struct list_head tmp_list; + if (!tcon->use_persistent || !tcon->need_reopen_files) + return; + + tcon->need_reopen_files = false; + cifs_dbg(FYI, "Reopen persistent handles"); INIT_LIST_HEAD(&tmp_list); @@ -793,7 +798,8 @@ cifs_reopen_persistent_handles(struct cifs_tcon *tcon) list_for_each_safe(tmp, tmp1, &tmp_list) { open_file = list_entry(tmp, struct cifsFileInfo, rlist); - cifs_reopen_file(open_file, false /* do not flush */); + if (cifs_reopen_file(open_file, false /* do not flush */)) + tcon->need_reopen_files = true; list_del_init(&open_file->rlist); cifsFileInfo_put(open_file); } diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c index 9f51b81119f2..001528781b6b 100644 --- a/fs/cifs/ioctl.c +++ b/fs/cifs/ioctl.c @@ -189,7 +189,7 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) xid = get_xid(); cifs_sb = CIFS_SB(inode->i_sb); - cifs_dbg(VFS, "cifs ioctl 0x%x\n", command); + cifs_dbg(FYI, "cifs ioctl 0x%x\n", command); switch (command) { case FS_IOC_GETFLAGS: if (pSMBFile == NULL) diff --git a/fs/cifs/link.c b/fs/cifs/link.c index d031af8d3d4d..c4d996f78e1c 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -45,13 +45,8 @@ (CIFS_MF_SYMLINK_LINK_OFFSET + CIFS_MF_SYMLINK_LINK_MAXLEN) #define CIFS_MF_SYMLINK_LEN_FORMAT "XSym\n%04u\n" -#define CIFS_MF_SYMLINK_MD5_FORMAT \ - "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n" -#define CIFS_MF_SYMLINK_MD5_ARGS(md5_hash) \ - md5_hash[0], md5_hash[1], md5_hash[2], md5_hash[3], \ - md5_hash[4], md5_hash[5], md5_hash[6], md5_hash[7], \ - md5_hash[8], md5_hash[9], md5_hash[10], md5_hash[11],\ - md5_hash[12], md5_hash[13], md5_hash[14], md5_hash[15] +#define CIFS_MF_SYMLINK_MD5_FORMAT "%16phN\n" +#define CIFS_MF_SYMLINK_MD5_ARGS(md5_hash) md5_hash static int symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash) diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c index f9e766f464be..b2aff0c6f22c 100644 --- a/fs/cifs/smb2file.c +++ b/fs/cifs/smb2file.c @@ -260,7 +260,7 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile) * and check it for zero before using. */ max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf; - if (!max_buf) { + if (max_buf < sizeof(struct smb2_lock_element)) { free_xid(xid); return -EINVAL; } diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 5ca5ea4668a1..87457227812c 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -250,16 +250,19 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) } cifs_mark_open_files_invalid(tcon); + if (tcon->use_persistent) + tcon->need_reopen_files = true; rc = SMB2_tcon(0, tcon->ses, tcon->treeName, tcon, nls_codepage); mutex_unlock(&tcon->ses->session_mutex); - if (tcon->use_persistent) - cifs_reopen_persistent_handles(tcon); - cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); if (rc) goto out; + + if (smb2_command != SMB2_INTERNAL_CMD) + queue_delayed_work(cifsiod_wq, &server->reconnect, 0); + atomic_inc(&tconInfoReconnectCount); out: /* @@ -280,7 +283,7 @@ out: case SMB2_CHANGE_NOTIFY: case SMB2_QUERY_INFO: case SMB2_SET_INFO: - return -EAGAIN; + rc = -EAGAIN; } unload_nls(nls_codepage); return rc; @@ -1972,6 +1975,55 @@ smb2_echo_callback(struct mid_q_entry *mid) add_credits(server, credits_received, CIFS_ECHO_OP); } +void smb2_reconnect_server(struct work_struct *work) +{ + struct TCP_Server_Info *server = container_of(work, + struct TCP_Server_Info, reconnect.work); + struct cifs_ses *ses; + struct cifs_tcon *tcon, *tcon2; + struct list_head tmp_list; + int tcon_exist = false; + + /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */ + mutex_lock(&server->reconnect_mutex); + + INIT_LIST_HEAD(&tmp_list); + cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); + + spin_lock(&cifs_tcp_ses_lock); + list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { + if (tcon->need_reconnect || tcon->need_reopen_files) { + tcon->tc_count++; + list_add_tail(&tcon->rlist, &tmp_list); + tcon_exist = true; + } + } + } + /* + * Get the reference to server struct to be sure that the last call of + * cifs_put_tcon() in the loop below won't release the server pointer. + */ + if (tcon_exist) + server->srv_count++; + + spin_unlock(&cifs_tcp_ses_lock); + + list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) { + if (!smb2_reconnect(SMB2_INTERNAL_CMD, tcon)) + cifs_reopen_persistent_handles(tcon); + list_del_init(&tcon->rlist); + cifs_put_tcon(tcon); + } + + cifs_dbg(FYI, "Reconnecting tcons finished\n"); + mutex_unlock(&server->reconnect_mutex); + + /* now we can safely release srv struct */ + if (tcon_exist) + cifs_put_tcp_session(server, 1); +} + int SMB2_echo(struct TCP_Server_Info *server) { @@ -1984,32 +2036,11 @@ SMB2_echo(struct TCP_Server_Info *server) cifs_dbg(FYI, "In echo request\n"); if (server->tcpStatus == CifsNeedNegotiate) { - struct list_head *tmp, *tmp2; - struct cifs_ses *ses; - struct cifs_tcon *tcon; - - cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); - spin_lock(&cifs_tcp_ses_lock); - list_for_each(tmp, &server->smb_ses_list) { - ses = list_entry(tmp, struct cifs_ses, smb_ses_list); - list_for_each(tmp2, &ses->tcon_list) { - tcon = list_entry(tmp2, struct cifs_tcon, - tcon_list); - /* add check for persistent handle reconnect */ - if (tcon && tcon->need_reconnect) { - spin_unlock(&cifs_tcp_ses_lock); - rc = smb2_reconnect(SMB2_ECHO, tcon); - spin_lock(&cifs_tcp_ses_lock); - } - } - } - spin_unlock(&cifs_tcp_ses_lock); + /* No need to send echo on newly established connections */ + queue_delayed_work(cifsiod_wq, &server->reconnect, 0); + return rc; } - /* if no session, renegotiate failed above */ - if (server->tcpStatus == CifsNeedNegotiate) - return -EIO; - rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req); if (rc) return rc; diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index fd3709e8de33..dc0d141f33e2 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -80,6 +80,8 @@ #define SMB2_SET_INFO cpu_to_le16(SMB2_SET_INFO_HE) #define SMB2_OPLOCK_BREAK cpu_to_le16(SMB2_OPLOCK_BREAK_HE) +#define SMB2_INTERNAL_CMD cpu_to_le16(0xFFFF) + #define NUMBER_OF_SMB2_COMMANDS 0x0013 /* BB FIXME - analyze following length BB */ diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index eb2cde2f64ba..f2d511a6971b 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -96,6 +96,7 @@ extern int smb2_open_file(const unsigned int xid, extern int smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock, const unsigned int xid); extern int smb2_push_mandatory_locks(struct cifsFileInfo *cfile); +extern void smb2_reconnect_server(struct work_struct *work); /* * SMB2 Worker functions - most of protocol specific implementation details diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c index 699b7868108f..c12bffefa3c9 100644 --- a/fs/cifs/smbencrypt.c +++ b/fs/cifs/smbencrypt.c @@ -23,7 +23,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <crypto/skcipher.h> +#include <linux/crypto.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/fs.h> @@ -69,46 +69,22 @@ str_to_key(unsigned char *str, unsigned char *key) static int smbhash(unsigned char *out, const unsigned char *in, unsigned char *key) { - int rc; unsigned char key2[8]; - struct crypto_skcipher *tfm_des; - struct scatterlist sgin, sgout; - struct skcipher_request *req; + struct crypto_cipher *tfm_des; str_to_key(key, key2); - tfm_des = crypto_alloc_skcipher("ecb(des)", 0, CRYPTO_ALG_ASYNC); + tfm_des = crypto_alloc_cipher("des", 0, 0); if (IS_ERR(tfm_des)) { - rc = PTR_ERR(tfm_des); - cifs_dbg(VFS, "could not allocate des crypto API\n"); - goto smbhash_err; - } - - req = skcipher_request_alloc(tfm_des, GFP_KERNEL); - if (!req) { - rc = -ENOMEM; cifs_dbg(VFS, "could not allocate des crypto API\n"); - goto smbhash_free_skcipher; + return PTR_ERR(tfm_des); } - crypto_skcipher_setkey(tfm_des, key2, 8); - - sg_init_one(&sgin, in, 8); - sg_init_one(&sgout, out, 8); + crypto_cipher_setkey(tfm_des, key2, 8); + crypto_cipher_encrypt_one(tfm_des, out, in); + crypto_free_cipher(tfm_des); - skcipher_request_set_callback(req, 0, NULL, NULL); - skcipher_request_set_crypt(req, &sgin, &sgout, 8, NULL); - - rc = crypto_skcipher_encrypt(req); - if (rc) - cifs_dbg(VFS, "could not encrypt crypt key rc: %d\n", rc); - - skcipher_request_free(req); - -smbhash_free_skcipher: - crypto_free_skcipher(tfm_des); -smbhash_err: - return rc; + return 0; } static int diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 5f02edc819af..fbb84c08e3cd 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -30,7 +30,7 @@ #include <linux/tcp.h> #include <linux/bvec.h> #include <linux/highmem.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/processor.h> #include <linux/mempool.h> #include "cifspdu.h" diff --git a/fs/compat.c b/fs/compat.c index 543b48c29ac3..e50a2114f474 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -49,7 +49,7 @@ #include <linux/pagemap.h> #include <linux/aio.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/mmu_context.h> #include <asm/ioctls.h> #include "internal.h" @@ -487,45 +487,6 @@ COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, return compat_sys_fcntl64(fd, cmd, arg); } -COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_reqs, u32 __user *, ctx32p) -{ - long ret; - aio_context_t ctx64; - - mm_segment_t oldfs = get_fs(); - if (unlikely(get_user(ctx64, ctx32p))) - return -EFAULT; - - set_fs(KERNEL_DS); - /* The __user pointer cast is valid because of the set_fs() */ - ret = sys_io_setup(nr_reqs, (aio_context_t __user *) &ctx64); - set_fs(oldfs); - /* truncating is ok because it's a user address */ - if (!ret) - ret = put_user((u32) ctx64, ctx32p); - return ret; -} - -COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id, - compat_long_t, min_nr, - compat_long_t, nr, - struct io_event __user *, events, - struct compat_timespec __user *, timeout) -{ - struct timespec t; - struct timespec __user *ut = NULL; - - if (timeout) { - if (compat_get_timespec(&t, timeout)) - return -EFAULT; - - ut = compat_alloc_user_space(sizeof(*ut)); - if (copy_to_user(ut, &t, sizeof(t)) ) - return -EFAULT; - } - return sys_io_getevents(ctx_id, min_nr, nr, events, ut); -} - /* A write operation does a read from user space and vice versa */ #define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ) @@ -602,42 +563,6 @@ out: return ret; } -static inline long -copy_iocb(long nr, u32 __user *ptr32, struct iocb __user * __user *ptr64) -{ - compat_uptr_t uptr; - int i; - - for (i = 0; i < nr; ++i) { - if (get_user(uptr, ptr32 + i)) - return -EFAULT; - if (put_user(compat_ptr(uptr), ptr64 + i)) - return -EFAULT; - } - return 0; -} - -#define MAX_AIO_SUBMITS (PAGE_SIZE/sizeof(struct iocb *)) - -COMPAT_SYSCALL_DEFINE3(io_submit, compat_aio_context_t, ctx_id, - int, nr, u32 __user *, iocb) -{ - struct iocb __user * __user *iocb64; - long ret; - - if (unlikely(nr < 0)) - return -EINVAL; - - if (nr > MAX_AIO_SUBMITS) - nr = MAX_AIO_SUBMITS; - - iocb64 = compat_alloc_user_space(nr * sizeof(*iocb64)); - ret = copy_iocb(nr, iocb, iocb64); - if (!ret) - ret = do_io_submit(ctx_id, nr, iocb64, 1); - return ret; -} - struct compat_ncp_mount_data { compat_int_t version; compat_uint_t ncp_fd; diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index f2d7402abe02..11d087b2b28e 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -76,7 +76,7 @@ #include <scsi/sg.h> #endif -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/if_bonding.h> diff --git a/fs/configfs/file.c b/fs/configfs/file.c index 2c6312db8516..39da1103d341 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -29,7 +29,7 @@ #include <linux/slab.h> #include <linux/mutex.h> #include <linux/vmalloc.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/configfs.h> #include "configfs_internal.h" diff --git a/fs/coredump.c b/fs/coredump.c index eb9c92c9b20f..e525b6017cdf 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -38,7 +38,7 @@ #include <linux/path.h> #include <linux/timekeeping.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/mmu_context.h> #include <asm/tlb.h> #include <asm/exec.h> diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c index 6eeea1dcba41..95cd4c3b06c3 100644 --- a/fs/crypto/keyinfo.c +++ b/fs/crypto/keyinfo.c @@ -248,7 +248,8 @@ retry: goto out; if (fscrypt_dummy_context_enabled(inode)) { - memset(raw_key, 0x42, FS_AES_256_XTS_KEY_SIZE); + memset(raw_key, 0x42, keysize/2); + memset(raw_key+keysize/2, 0x24, keysize - (keysize/2)); goto got_key; } diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 6ed7c2eebeec..d6cd7ea4851d 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -179,6 +179,11 @@ int fscrypt_has_permitted_context(struct inode *parent, struct inode *child) BUG_ON(1); } + /* No restrictions on file types which are never encrypted */ + if (!S_ISREG(child->i_mode) && !S_ISDIR(child->i_mode) && + !S_ISLNK(child->i_mode)) + return 1; + /* no restrictions if the parent directory is not encrypted */ if (!parent->i_sb->s_cop->is_encrypted(parent)) return 1; @@ -451,16 +451,37 @@ void dax_wake_mapping_entry_waiter(struct address_space *mapping, __wake_up(wq, TASK_NORMAL, wake_all ? 0 : 1, &key); } +static int __dax_invalidate_mapping_entry(struct address_space *mapping, + pgoff_t index, bool trunc) +{ + int ret = 0; + void *entry; + struct radix_tree_root *page_tree = &mapping->page_tree; + + spin_lock_irq(&mapping->tree_lock); + entry = get_unlocked_mapping_entry(mapping, index, NULL); + if (!entry || !radix_tree_exceptional_entry(entry)) + goto out; + if (!trunc && + (radix_tree_tag_get(page_tree, index, PAGECACHE_TAG_DIRTY) || + radix_tree_tag_get(page_tree, index, PAGECACHE_TAG_TOWRITE))) + goto out; + radix_tree_delete(page_tree, index); + mapping->nrexceptional--; + ret = 1; +out: + put_unlocked_mapping_entry(mapping, index, entry); + spin_unlock_irq(&mapping->tree_lock); + return ret; +} /* * Delete exceptional DAX entry at @index from @mapping. Wait for radix tree * entry to get unlocked before deleting it. */ int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index) { - void *entry; + int ret = __dax_invalidate_mapping_entry(mapping, index, true); - spin_lock_irq(&mapping->tree_lock); - entry = get_unlocked_mapping_entry(mapping, index, NULL); /* * This gets called from truncate / punch_hole path. As such, the caller * must hold locks protecting against concurrent modifications of the @@ -468,16 +489,46 @@ int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index) * caller has seen exceptional entry for this index, we better find it * at that index as well... */ - if (WARN_ON_ONCE(!entry || !radix_tree_exceptional_entry(entry))) { - spin_unlock_irq(&mapping->tree_lock); - return 0; - } - radix_tree_delete(&mapping->page_tree, index); + WARN_ON_ONCE(!ret); + return ret; +} + +/* + * Invalidate exceptional DAX entry if easily possible. This handles DAX + * entries for invalidate_inode_pages() so we evict the entry only if we can + * do so without blocking. + */ +int dax_invalidate_mapping_entry(struct address_space *mapping, pgoff_t index) +{ + int ret = 0; + void *entry, **slot; + struct radix_tree_root *page_tree = &mapping->page_tree; + + spin_lock_irq(&mapping->tree_lock); + entry = __radix_tree_lookup(page_tree, index, NULL, &slot); + if (!entry || !radix_tree_exceptional_entry(entry) || + slot_locked(mapping, slot)) + goto out; + if (radix_tree_tag_get(page_tree, index, PAGECACHE_TAG_DIRTY) || + radix_tree_tag_get(page_tree, index, PAGECACHE_TAG_TOWRITE)) + goto out; + radix_tree_delete(page_tree, index); mapping->nrexceptional--; + ret = 1; +out: spin_unlock_irq(&mapping->tree_lock); - dax_wake_mapping_entry_waiter(mapping, index, entry, true); + if (ret) + dax_wake_mapping_entry_waiter(mapping, index, entry, true); + return ret; +} - return 1; +/* + * Invalidate exceptional DAX entry if it is clean. + */ +int dax_invalidate_mapping_entry_sync(struct address_space *mapping, + pgoff_t index) +{ + return __dax_invalidate_mapping_entry(mapping, index, false); } /* @@ -488,15 +539,16 @@ int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index) * otherwise it will simply fall out of the page cache under memory * pressure without ever having been dirtied. */ -static int dax_load_hole(struct address_space *mapping, void *entry, +static int dax_load_hole(struct address_space *mapping, void **entry, struct vm_fault *vmf) { struct page *page; + int ret; /* Hole page already exists? Return it... */ - if (!radix_tree_exceptional_entry(entry)) { - vmf->page = entry; - return VM_FAULT_LOCKED; + if (!radix_tree_exceptional_entry(*entry)) { + page = *entry; + goto out; } /* This will replace locked radix tree entry with a hole page */ @@ -504,8 +556,17 @@ static int dax_load_hole(struct address_space *mapping, void *entry, vmf->gfp_mask | __GFP_ZERO); if (!page) return VM_FAULT_OOM; + out: vmf->page = page; - return VM_FAULT_LOCKED; + ret = finish_fault(vmf); + vmf->page = NULL; + *entry = page; + if (!ret) { + /* Grab reference for PTE that is now referencing the page */ + get_page(page); + return VM_FAULT_NOPAGE; + } + return ret; } static int copy_user_dax(struct block_device *bdev, sector_t sector, size_t size, @@ -934,6 +995,17 @@ dax_iomap_actor(struct inode *inode, loff_t pos, loff_t length, void *data, if (WARN_ON_ONCE(iomap->type != IOMAP_MAPPED)) return -EIO; + /* + * Write can allocate block for an area which has a hole page mapped + * into page tables. We have to tear down these mappings so that data + * written by write(2) is visible in mmap. + */ + if ((iomap->flags & IOMAP_F_NEW) && inode->i_mapping->nrpages) { + invalidate_inode_pages2_range(inode->i_mapping, + pos >> PAGE_SHIFT, + (end - 1) >> PAGE_SHIFT); + } + while (pos < end) { unsigned offset = pos & (PAGE_SIZE - 1); struct blk_dax_ctl dax = { 0 }; @@ -992,23 +1064,6 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, if (iov_iter_rw(iter) == WRITE) flags |= IOMAP_WRITE; - /* - * Yes, even DAX files can have page cache attached to them: A zeroed - * page is inserted into the pagecache when we have to serve a write - * fault on a hole. It should never be dirtied and can simply be - * dropped from the pagecache once we get real data for the page. - * - * XXX: This is racy against mmap, and there's nothing we can do about - * it. We'll eventually need to shift this down even further so that - * we can check if we allocated blocks over a hole first. - */ - if (mapping->nrpages) { - ret = invalidate_inode_pages2_range(mapping, - pos >> PAGE_SHIFT, - (pos + iov_iter_count(iter) - 1) >> PAGE_SHIFT); - WARN_ON_ONCE(ret); - } - while (iov_iter_count(iter)) { ret = iomap_apply(inode, pos, iov_iter_count(iter), flags, ops, iter, dax_iomap_actor); @@ -1023,6 +1078,15 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, } EXPORT_SYMBOL_GPL(dax_iomap_rw); +static int dax_fault_return(int error) +{ + if (error == 0) + return VM_FAULT_NOPAGE; + if (error == -ENOMEM) + return VM_FAULT_OOM; + return VM_FAULT_SIGBUS; +} + /** * dax_iomap_fault - handle a page fault on a DAX file * @vma: The virtual memory area where the fault occurred @@ -1055,12 +1119,6 @@ int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf, if (pos >= i_size_read(inode)) return VM_FAULT_SIGBUS; - entry = grab_mapping_entry(mapping, vmf->pgoff, 0); - if (IS_ERR(entry)) { - error = PTR_ERR(entry); - goto out; - } - if ((vmf->flags & FAULT_FLAG_WRITE) && !vmf->cow_page) flags |= IOMAP_WRITE; @@ -1071,9 +1129,15 @@ int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf, */ error = ops->iomap_begin(inode, pos, PAGE_SIZE, flags, &iomap); if (error) - goto unlock_entry; + return dax_fault_return(error); if (WARN_ON_ONCE(iomap.offset + iomap.length < pos + PAGE_SIZE)) { - error = -EIO; /* fs corruption? */ + vmf_ret = dax_fault_return(-EIO); /* fs corruption? */ + goto finish_iomap; + } + + entry = grab_mapping_entry(mapping, vmf->pgoff, 0); + if (IS_ERR(entry)) { + vmf_ret = dax_fault_return(PTR_ERR(entry)); goto finish_iomap; } @@ -1096,13 +1160,13 @@ int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf, } if (error) - goto finish_iomap; + goto error_unlock_entry; __SetPageUptodate(vmf->cow_page); vmf_ret = finish_fault(vmf); if (!vmf_ret) vmf_ret = VM_FAULT_DONE_COW; - goto finish_iomap; + goto unlock_entry; } switch (iomap.type) { @@ -1114,12 +1178,15 @@ int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf, } error = dax_insert_mapping(mapping, iomap.bdev, sector, PAGE_SIZE, &entry, vma, vmf); + /* -EBUSY is fine, somebody else faulted on the same PTE */ + if (error == -EBUSY) + error = 0; break; case IOMAP_UNWRITTEN: case IOMAP_HOLE: if (!(vmf->flags & FAULT_FLAG_WRITE)) { - vmf_ret = dax_load_hole(mapping, entry, vmf); - break; + vmf_ret = dax_load_hole(mapping, &entry, vmf); + goto unlock_entry; } /*FALLTHRU*/ default: @@ -1128,31 +1195,25 @@ int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf, break; } + error_unlock_entry: + vmf_ret = dax_fault_return(error) | major; + unlock_entry: + put_locked_mapping_entry(mapping, vmf->pgoff, entry); finish_iomap: if (ops->iomap_end) { - if (error || (vmf_ret & VM_FAULT_ERROR)) { - /* keep previous error */ - ops->iomap_end(inode, pos, PAGE_SIZE, 0, flags, - &iomap); - } else { - error = ops->iomap_end(inode, pos, PAGE_SIZE, - PAGE_SIZE, flags, &iomap); - } - } - unlock_entry: - if (vmf_ret != VM_FAULT_LOCKED || error) - put_locked_mapping_entry(mapping, vmf->pgoff, entry); - out: - if (error == -ENOMEM) - return VM_FAULT_OOM | major; - /* -EBUSY is fine, somebody else faulted on the same PTE */ - if (error < 0 && error != -EBUSY) - return VM_FAULT_SIGBUS | major; - if (vmf_ret) { - WARN_ON_ONCE(error); /* -EBUSY from ops->iomap_end? */ - return vmf_ret; + int copied = PAGE_SIZE; + + if (vmf_ret & VM_FAULT_ERROR) + copied = 0; + /* + * The fault is done by now and there's no way back (other + * thread may be already happily using PTE we have installed). + * Just ignore error from ->iomap_end since we cannot do much + * with it. + */ + ops->iomap_end(inode, pos, PAGE_SIZE, copied, flags, &iomap); } - return VM_FAULT_NOPAGE | major; + return vmf_ret; } EXPORT_SYMBOL_GPL(dax_iomap_fault); @@ -1277,16 +1338,6 @@ int dax_iomap_pmd_fault(struct vm_area_struct *vma, unsigned long address, goto fallback; /* - * grab_mapping_entry() will make sure we get a 2M empty entry, a DAX - * PMD or a HZP entry. If it can't (because a 4k page is already in - * the tree, for instance), it will return -EEXIST and we just fall - * back to 4k entries. - */ - entry = grab_mapping_entry(mapping, pgoff, RADIX_DAX_PMD); - if (IS_ERR(entry)) - goto fallback; - - /* * Note that we don't use iomap_apply here. We aren't doing I/O, only * setting up a mapping, so really we're using iomap_begin() as a way * to look up our filesystem block. @@ -1294,10 +1345,21 @@ int dax_iomap_pmd_fault(struct vm_area_struct *vma, unsigned long address, pos = (loff_t)pgoff << PAGE_SHIFT; error = ops->iomap_begin(inode, pos, PMD_SIZE, iomap_flags, &iomap); if (error) - goto unlock_entry; + goto fallback; + if (iomap.offset + iomap.length < pos + PMD_SIZE) goto finish_iomap; + /* + * grab_mapping_entry() will make sure we get a 2M empty entry, a DAX + * PMD or a HZP entry. If it can't (because a 4k page is already in + * the tree, for instance), it will return -EEXIST and we just fall + * back to 4k entries. + */ + entry = grab_mapping_entry(mapping, pgoff, RADIX_DAX_PMD); + if (IS_ERR(entry)) + goto finish_iomap; + vmf.pgoff = pgoff; vmf.flags = flags; vmf.gfp_mask = mapping_gfp_mask(mapping) | __GFP_IO; @@ -1310,7 +1372,7 @@ int dax_iomap_pmd_fault(struct vm_area_struct *vma, unsigned long address, case IOMAP_UNWRITTEN: case IOMAP_HOLE: if (WARN_ON_ONCE(write)) - goto finish_iomap; + goto unlock_entry; result = dax_pmd_load_hole(vma, pmd, &vmf, address, &iomap, &entry); break; @@ -1319,20 +1381,23 @@ int dax_iomap_pmd_fault(struct vm_area_struct *vma, unsigned long address, break; } + unlock_entry: + put_locked_mapping_entry(mapping, pgoff, entry); finish_iomap: if (ops->iomap_end) { - if (result == VM_FAULT_FALLBACK) { - ops->iomap_end(inode, pos, PMD_SIZE, 0, iomap_flags, - &iomap); - } else { - error = ops->iomap_end(inode, pos, PMD_SIZE, PMD_SIZE, - iomap_flags, &iomap); - if (error) - result = VM_FAULT_FALLBACK; - } + int copied = PMD_SIZE; + + if (result == VM_FAULT_FALLBACK) + copied = 0; + /* + * The fault is done by now and there's no way back (other + * thread may be already happily using PMD we have installed). + * Just ignore error from ->iomap_end since we cannot do much + * with it. + */ + ops->iomap_end(inode, pos, PMD_SIZE, copied, iomap_flags, + &iomap); } - unlock_entry: - put_locked_mapping_entry(mapping, pgoff, entry); fallback: if (result == VM_FAULT_FALLBACK) { split_huge_pmd(vma, pmd, address); diff --git a/fs/dcache.c b/fs/dcache.c index 252378359a8f..769903dbc19d 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -26,7 +26,7 @@ #include <linux/export.h> #include <linux/mount.h> #include <linux/file.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/security.h> #include <linux/seqlock.h> #include <linux/swap.h> diff --git a/fs/dcookies.c b/fs/dcookies.c index a26a701ef512..0d0461cf2431 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -26,7 +26,7 @@ #include <linux/mutex.h> #include <linux/path.h> #include <linux/compat.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> /* The dcookies are allocated from a kmem_cache and * hashed onto a small number of lists. None of the diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index b670f5601fbb..748e8d59e611 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -38,7 +38,7 @@ #include <linux/mutex.h> #include <linux/idr.h> #include <linux/ratelimit.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/dlm.h> #include "config.h" diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 35502d4046f5..6df332296c66 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -1395,7 +1395,6 @@ static int nodeid_warned(int nodeid, int num_nodes, int *warned) void dlm_scan_waiters(struct dlm_ls *ls) { struct dlm_lkb *lkb; - ktime_t zero = ktime_set(0, 0); s64 us; s64 debug_maxus = 0; u32 debug_scanned = 0; @@ -1409,7 +1408,7 @@ void dlm_scan_waiters(struct dlm_ls *ls) mutex_lock(&ls->ls_waiters_mutex); list_for_each_entry(lkb, &ls->ls_waiters, lkb_wait_reply) { - if (ktime_equal(lkb->lkb_wait_time, zero)) + if (!lkb->lkb_wait_time) continue; debug_scanned++; @@ -1419,7 +1418,7 @@ void dlm_scan_waiters(struct dlm_ls *ls) if (us < dlm_config.ci_waitwarn_us) continue; - lkb->lkb_wait_time = zero; + lkb->lkb_wait_time = 0; debug_expired++; if (us > debug_maxus) diff --git a/fs/efs/efs.h b/fs/efs/efs.h index 5bbf9612140c..70f5d4f9a945 100644 --- a/fs/efs/efs.h +++ b/fs/efs/efs.h @@ -14,7 +14,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/fs.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #define EFS_VERSION "1.0a" diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 10db91218933..bcb68fcc8445 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -34,7 +34,7 @@ #include <linux/mutex.h> #include <linux/anon_inodes.h> #include <linux/device.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/io.h> #include <asm/mman.h> #include <linux/atomic.h> diff --git a/fs/exec.c b/fs/exec.c index 8112eacf10f3..e57946610733 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -19,7 +19,7 @@ * current->executable is only used by the procfs. This allows a dispatch * table to check for several different types of binary formats. We keep * trying until we recognize the file or we run out of supported binary - * formats. + * formats. */ #include <linux/slab.h> @@ -58,7 +58,7 @@ #include <linux/compat.h> #include <linux/vmalloc.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/mmu_context.h> #include <asm/tlb.h> @@ -1268,6 +1268,13 @@ int flush_old_exec(struct linux_binprm * bprm) flush_thread(); current->personality &= ~bprm->per_clear; + /* + * We have to apply CLOEXEC before we change whether the process is + * dumpable (in setup_new_exec) to avoid a race with a process in userspace + * trying to access the should-be-closed file descriptors of a process + * undergoing exec(2). + */ + do_close_on_exec(current->files); return 0; out: @@ -1330,7 +1337,6 @@ void setup_new_exec(struct linux_binprm * bprm) group */ current->self_exec_id++; flush_signal_handlers(current, 0); - do_close_on_exec(current->files); } EXPORT_SYMBOL(setup_new_exec); diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 0093ea2512a8..f073bfca694b 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -751,9 +751,8 @@ static int ext2_get_blocks(struct inode *inode, mutex_unlock(&ei->truncate_mutex); goto cleanup; } - } else { - *new = true; } + *new = true; ext2_splice_branch(inode, iblock, partial, indirect_blks, count); mutex_unlock(&ei->truncate_mutex); diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c index 9d617423e936..191e02b28ce8 100644 --- a/fs/ext2/ioctl.c +++ b/fs/ext2/ioctl.c @@ -14,7 +14,7 @@ #include <linux/compat.h> #include <linux/mount.h> #include <asm/current.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 6cb042b53b5b..9e25a71fe1a2 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -31,7 +31,7 @@ #include <linux/mount.h> #include <linux/log2.h> #include <linux/quotaops.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "ext2.h" #include "xattr.h" #include "acl.h" diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index b1f8416923ab..3e295d3350a9 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -37,7 +37,7 @@ #include <linux/quotaops.h> #include <linux/string.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/fiemap.h> #include <linux/backing-dev.h> #include "ext4_jbd2.h" diff --git a/fs/ext4/file.c b/fs/ext4/file.c index b5f184493c57..d663d3d7c81c 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -258,7 +258,6 @@ out: static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { int result; - handle_t *handle = NULL; struct inode *inode = file_inode(vma->vm_file); struct super_block *sb = inode->i_sb; bool write = vmf->flags & FAULT_FLAG_WRITE; @@ -266,24 +265,12 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) if (write) { sb_start_pagefault(sb); file_update_time(vma->vm_file); - down_read(&EXT4_I(inode)->i_mmap_sem); - handle = ext4_journal_start_sb(sb, EXT4_HT_WRITE_PAGE, - EXT4_DATA_TRANS_BLOCKS(sb)); - } else - down_read(&EXT4_I(inode)->i_mmap_sem); - - if (IS_ERR(handle)) - result = VM_FAULT_SIGBUS; - else - result = dax_iomap_fault(vma, vmf, &ext4_iomap_ops); - - if (write) { - if (!IS_ERR(handle)) - ext4_journal_stop(handle); - up_read(&EXT4_I(inode)->i_mmap_sem); + } + down_read(&EXT4_I(inode)->i_mmap_sem); + result = dax_iomap_fault(vma, vmf, &ext4_iomap_ops); + up_read(&EXT4_I(inode)->i_mmap_sem); + if (write) sb_end_pagefault(sb); - } else - up_read(&EXT4_I(inode)->i_mmap_sem); return result; } @@ -292,7 +279,6 @@ static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, unsigned int flags) { int result; - handle_t *handle = NULL; struct inode *inode = file_inode(vma->vm_file); struct super_block *sb = inode->i_sb; bool write = flags & FAULT_FLAG_WRITE; @@ -300,27 +286,13 @@ static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, if (write) { sb_start_pagefault(sb); file_update_time(vma->vm_file); - down_read(&EXT4_I(inode)->i_mmap_sem); - handle = ext4_journal_start_sb(sb, EXT4_HT_WRITE_PAGE, - ext4_chunk_trans_blocks(inode, - PMD_SIZE / PAGE_SIZE)); - } else - down_read(&EXT4_I(inode)->i_mmap_sem); - - if (IS_ERR(handle)) - result = VM_FAULT_SIGBUS; - else { - result = dax_iomap_pmd_fault(vma, addr, pmd, flags, - &ext4_iomap_ops); } - - if (write) { - if (!IS_ERR(handle)) - ext4_journal_stop(handle); - up_read(&EXT4_I(inode)->i_mmap_sem); + down_read(&EXT4_I(inode)->i_mmap_sem); + result = dax_iomap_pmd_fault(vma, addr, pmd, flags, + &ext4_iomap_ops); + up_read(&EXT4_I(inode)->i_mmap_sem); + if (write) sb_end_pagefault(sb); - } else - up_read(&EXT4_I(inode)->i_mmap_sem); return result; } diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 49fd1371bfa2..d534399cf607 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -15,7 +15,7 @@ #include <linux/file.h> #include <linux/quotaops.h> #include <linux/uuid.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "ext4_jbd2.h" #include "ext4.h" diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 63a6b6332682..66845a08a87a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -38,7 +38,7 @@ #include <linux/log2.h> #include <linux/crc16.h> #include <linux/cleancache.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/kthread.h> #include <linux/freezer.h> diff --git a/fs/fcntl.c b/fs/fcntl.c index 6e2771c210f6..e1c54f20325c 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -25,7 +25,7 @@ #include <asm/poll.h> #include <asm/siginfo.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME) diff --git a/fs/fhandle.c b/fs/fhandle.c index ca3c3dd01789..5559168d5637 100644 --- a/fs/fhandle.c +++ b/fs/fhandle.c @@ -8,7 +8,7 @@ #include <linux/fs_struct.h> #include <linux/fsnotify.h> #include <linux/personality.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" #include "mount.h" diff --git a/fs/filesystems.c b/fs/filesystems.c index c5618db110be..cac75547d35c 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -14,7 +14,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> /* * Handling of filesystem drivers list. diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index e23ff70b3435..016c11eaca7c 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -22,7 +22,7 @@ #include <linux/swap.h> #include <linux/crc32.h> #include <linux/writeback.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/dlm.h> #include <linux/dlm_plock.h> #include <linux/delay.h> diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 14cbf60167a7..94f50cac91c6 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -21,7 +21,7 @@ #include <linux/list.h> #include <linux/wait.h> #include <linux/module.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/seq_file.h> #include <linux/debugfs.h> #include <linux/kthread.h> @@ -695,7 +695,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, gl->gl_target = LM_ST_UNLOCKED; gl->gl_demote_state = LM_ST_EXCLUSIVE; gl->gl_ops = glops; - gl->gl_dstamp = ktime_set(0, 0); + gl->gl_dstamp = 0; preempt_disable(); /* We use the global stats to estimate the initial per-glock stats */ gl->gl_stats = this_cpu_ptr(sdp->sd_lkstats)->lkstats[glops->go_type]; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 6cd9f84967b8..eb7724b8578a 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -19,7 +19,7 @@ #include <linux/crc32.h> #include <linux/fiemap.h> #include <linux/security.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "gfs2.h" #include "incore.h" diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index c9ff1cf7d4f3..f8d30e41d1d3 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -15,7 +15,7 @@ #include <linux/buffer_head.h> #include <linux/module.h> #include <linux/kobject.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/gfs2_ondisk.h> #include <linux/genhd.h> diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c index aee4485ad8a9..763d659db91b 100644 --- a/fs/gfs2/util.c +++ b/fs/gfs2/util.c @@ -14,7 +14,7 @@ #include <linux/buffer_head.h> #include <linux/crc32.h> #include <linux/gfs2_ondisk.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "gfs2.h" #include "incore.h" diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index a4a577088d19..d87721aeb575 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -14,7 +14,7 @@ #include <linux/xattr.h> #include <linux/gfs2_ondisk.h> #include <linux/posix_acl_xattr.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "gfs2.h" #include "incore.h" diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h index 4cdec5a19347..6d0783e2e276 100644 --- a/fs/hfs/hfs_fs.h +++ b/fs/hfs/hfs_fs.h @@ -23,7 +23,7 @@ #include <linux/workqueue.h> #include <asm/byteorder.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "hfs.h" diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c index 99627f8a0a18..0a156d84e67d 100644 --- a/fs/hfsplus/ioctl.c +++ b/fs/hfsplus/ioctl.c @@ -16,7 +16,7 @@ #include <linux/fs.h> #include <linux/mount.h> #include <linux/sched.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "hfsplus_fs.h" /* diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 4fb7b10f3a05..54de77e78775 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -37,7 +37,7 @@ #include <linux/migrate.h> #include <linux/uio.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> static const struct super_operations hugetlbfs_ops; static const struct address_space_operations hugetlbfs_aops; diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 8ed971eeab44..a097048ed1a3 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -47,7 +47,7 @@ #define CREATE_TRACE_POINTS #include <trace/events/jbd2.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/page.h> #ifdef CONFIG_JBD2_DEBUG diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c index b6fd1ff29ddf..fc89f9436784 100644 --- a/fs/jfs/ioctl.c +++ b/fs/jfs/ioctl.c @@ -13,7 +13,7 @@ #include <linux/sched.h> #include <linux/blkdev.h> #include <asm/current.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "jfs_filsys.h" #include "jfs_debug.h" diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c index a37eb5f8cbc0..a70907606025 100644 --- a/fs/jfs/jfs_debug.c +++ b/fs/jfs/jfs_debug.c @@ -22,7 +22,7 @@ #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "jfs_incore.h" #include "jfs_filsys.h" #include "jfs_debug.h" diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 85671f7f8518..2be7c9ce6663 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -31,7 +31,7 @@ #include <linux/exportfs.h> #include <linux/crc32.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/seq_file.h> #include <linux/blkdev.h> diff --git a/fs/libfs.c b/fs/libfs.c index 6637aa60c1da..e973cd51f126 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -16,7 +16,7 @@ #include <linux/writeback.h> #include <linux/buffer_head.h> /* sync_mapping_buffers */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" diff --git a/fs/locks.c b/fs/locks.c index 22c5b4aa4961..26811321d39b 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -131,7 +131,7 @@ #define CREATE_TRACE_POINTS #include <trace/events/filelock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) diff --git a/fs/namei.c b/fs/namei.c index d9fc7617b9e4..ad74877e1442 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -37,7 +37,7 @@ #include <linux/hash.h> #include <linux/bitops.h> #include <linux/init_task.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" #include "mount.h" diff --git a/fs/namespace.c b/fs/namespace.c index f7e28f8ea04d..b5b1259e064f 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -96,10 +96,6 @@ static inline struct hlist_head *mp_hash(struct dentry *dentry) return &mountpoint_hashtable[tmp & mp_hash_mask]; } -/* - * allocation is serialized by namespace_sem, but we need the spinlock to - * serialize with freeing. - */ static int mnt_alloc_id(struct mount *mnt) { int res; @@ -1034,6 +1030,8 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, if (IS_MNT_SLAVE(old)) list_add(&mnt->mnt_slave, &old->mnt_slave); mnt->mnt_master = old->mnt_master; + } else { + CLEAR_MNT_SHARED(mnt); } if (flag & CL_MAKE_SHARED) set_mnt_shared(mnt); @@ -1828,9 +1826,7 @@ struct vfsmount *clone_private_mount(const struct path *path) if (IS_MNT_UNBINDABLE(old_mnt)) return ERR_PTR(-EINVAL); - down_read(&namespace_sem); new_mnt = clone_mnt(old_mnt, path->dentry, CL_PRIVATE); - up_read(&namespace_sem); if (IS_ERR(new_mnt)) return ERR_CAST(new_mnt); diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index 6df2a3827574..088f52484d6e 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -18,7 +18,7 @@ #include <linux/vmalloc.h> #include <linux/mm.h> #include <linux/namei.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include "ncp_fs.h" diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 83ca77231707..76965e772264 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -8,7 +8,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/time.h> #include <linux/kernel.h> diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index ba611bf1aff3..7eb89c23c847 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -13,7 +13,7 @@ #include <linux/module.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include <linux/time.h> diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c index 0a3f9b594602..4434e4977cf3 100644 --- a/fs/ncpfs/ioctl.c +++ b/fs/ncpfs/ioctl.c @@ -20,7 +20,7 @@ #include <linux/vmalloc.h> #include <linux/sched.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "ncp_fs.h" diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c index 33b873b259a8..39f57bef8531 100644 --- a/fs/ncpfs/mmap.c +++ b/fs/ncpfs/mmap.c @@ -18,7 +18,7 @@ #include <linux/fcntl.h> #include <linux/memcontrol.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "ncp_fs.h" diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h index 17cfb743b5bf..b4c87cfcee95 100644 --- a/fs/ncpfs/ncplib_kernel.h +++ b/fs/ncpfs/ncplib_kernel.h @@ -21,7 +21,7 @@ #include <linux/fcntl.h> #include <linux/pagemap.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include <asm/unaligned.h> #include <asm/string.h> diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c index 471bc3d1139e..f32f272ee501 100644 --- a/fs/ncpfs/sock.c +++ b/fs/ncpfs/sock.c @@ -16,7 +16,7 @@ #include <linux/fcntl.h> #include <linux/stat.h> #include <linux/string.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/in.h> #include <linux/net.h> #include <linux/mm.h> diff --git a/fs/ncpfs/symlink.c b/fs/ncpfs/symlink.c index 421b6f91e8ec..a6d26b46fc05 100644 --- a/fs/ncpfs/symlink.c +++ b/fs/ncpfs/symlink.c @@ -21,7 +21,7 @@ */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/fs.h> diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index be88bcdca692..aab32fc3d6a8 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -52,7 +52,7 @@ #include <linux/nfs_page.h> #include <linux/sunrpc/clnt.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/atomic.h> #include "internal.h" diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 157cb43ce9db..26dbe8b0c10d 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -29,7 +29,7 @@ #include <linux/gfp.h> #include <linux/swap.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "delegation.h" #include "internal.h" diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 45962fe5098c..0ca4af8cca5d 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -619,12 +619,11 @@ nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror, struct nfs4_ff_layoutstat *layoutstat, ktime_t now) { - static const ktime_t notime = {0}; s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL; struct nfs4_flexfile_layout *ffl = FF_LAYOUT_FROM_HDR(mirror->layout); nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now); - if (ktime_equal(mirror->start_time, notime)) + if (!mirror->start_time) mirror->start_time = now; if (mirror->report_interval != 0) report_interval = (s64)mirror->report_interval * 1000LL; diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index a608ffd28acc..391dafaf9182 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -30,7 +30,7 @@ #include <linux/namei.h> #include <linux/security.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 011e4f8c1e01..5ca4d96b1942 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -39,7 +39,7 @@ #include <linux/compat.h> #include <linux/freezer.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "nfs4_fs.h" #include "callback.h" diff --git a/fs/nfs/super.c b/fs/nfs/super.c index ddce94ce8142..6bca17883b93 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -55,7 +55,7 @@ #include <linux/nsproxy.h> #include <linux/rcupdate.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "nfs4_fs.h" #include "callback.h" diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 6e761f3f4cbf..b00d53d13d47 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -24,7 +24,7 @@ #include <linux/freezer.h> #include <linux/wait.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "delegation.h" #include "internal.h" diff --git a/fs/nfsd/fault_inject.c b/fs/nfsd/fault_inject.c index c16bf5af6831..34c1c449fddf 100644 --- a/fs/nfsd/fault_inject.c +++ b/fs/nfsd/fault_inject.c @@ -10,7 +10,7 @@ #include <linux/module.h> #include <linux/nsproxy.h> #include <linux/sunrpc/addr.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "state.h" #include "netns.h" diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 7a21abe7caf7..26c6fdb4bf67 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -26,7 +26,7 @@ #include <linux/jhash.h> #include <linux/ima.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/exportfs.h> #include <linux/writeback.h> #include <linux/security.h> diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 99510d811a8c..358ed7e1195a 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -30,7 +30,7 @@ #include <linux/writeback.h> #include <asm/page.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "attrib.h" #include "bitmap.h" diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 96a155ab5059..f6e871760f8d 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -1250,7 +1250,7 @@ static int o2hb_thread(void *data) mlog(ML_HEARTBEAT, "start = %lld, end = %lld, msec = %u, ret = %d\n", - before_hb.tv64, after_hb.tv64, elapsed_msec, ret); + before_hb, after_hb, elapsed_msec, ret); if (!kthread_should_stop() && elapsed_msec < reg->hr_timeout_ms) { diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c index dfe162f5fd4c..d331c2386b94 100644 --- a/fs/ocfs2/cluster/masklog.c +++ b/fs/ocfs2/cluster/masklog.c @@ -24,7 +24,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/string.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "masklog.h" diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 8abab16b4602..d4b5c81f0445 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -62,7 +62,7 @@ #include <linux/export.h> #include <net/tcp.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "heartbeat.h" #include "tcp.h" diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index 1079fae5aa12..9ab9e1892b5f 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -45,7 +45,7 @@ #include <linux/backing-dev.h> #include <linux/poll.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "stackglue.h" #include "userdlm.h" diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index d171d2c53f7f..f8933cb53d68 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -4834,7 +4834,7 @@ int ocfs2_reflink_remap_range(struct file *file_in, ret = vfs_clone_file_prep_inodes(inode_in, pos_in, inode_out, pos_out, &len, is_dedupe); - if (ret || len == 0) + if (ret <= 0) goto out_unlock; /* Lock out changes to the allocation maps and remap. */ diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index c9e828ec3c8e..dae9eb7c441e 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -24,7 +24,7 @@ #include <linux/slab.h> #include <linux/reboot.h> #include <linux/sched.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "stackglue.h" diff --git a/fs/open.c b/fs/open.c index d3ed8171e8e0..9921f70bc5ca 100644 --- a/fs/open.c +++ b/fs/open.c @@ -19,7 +19,7 @@ #include <linux/mount.h> #include <linux/fcntl.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/fs.h> #include <linux/personality.h> #include <linux/pagemap.h> diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c index c003a667ed1a..13215f26e321 100644 --- a/fs/openpromfs/inode.c +++ b/fs/openpromfs/inode.c @@ -16,7 +16,7 @@ #include <asm/openprom.h> #include <asm/oplib.h> #include <asm/prom.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> static DEFINE_MUTEX(op_mutex); diff --git a/fs/pipe.c b/fs/pipe.c index 8e0d9f26dfad..73b84baf58f8 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -23,7 +23,7 @@ #include <linux/fcntl.h> #include <linux/memcontrol.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/ioctls.h> #include "internal.h" diff --git a/fs/pnode.c b/fs/pnode.c index 234a9ac49958..06a793f4ae38 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -67,49 +67,47 @@ int get_dominating_id(struct mount *mnt, const struct path *root) static int do_make_slave(struct mount *mnt) { - struct mount *peer_mnt = mnt, *master = mnt->mnt_master; - struct mount *slave_mnt; + struct mount *master, *slave_mnt; - /* - * slave 'mnt' to a peer mount that has the - * same root dentry. If none is available then - * slave it to anything that is available. - */ - while ((peer_mnt = next_peer(peer_mnt)) != mnt && - peer_mnt->mnt.mnt_root != mnt->mnt.mnt_root) ; - - if (peer_mnt == mnt) { - peer_mnt = next_peer(mnt); - if (peer_mnt == mnt) - peer_mnt = NULL; - } - if (mnt->mnt_group_id && IS_MNT_SHARED(mnt) && - list_empty(&mnt->mnt_share)) - mnt_release_group_id(mnt); - - list_del_init(&mnt->mnt_share); - mnt->mnt_group_id = 0; - - if (peer_mnt) - master = peer_mnt; - - if (master) { - list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave) - slave_mnt->mnt_master = master; - list_move(&mnt->mnt_slave, &master->mnt_slave_list); - list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev); - INIT_LIST_HEAD(&mnt->mnt_slave_list); + if (list_empty(&mnt->mnt_share)) { + if (IS_MNT_SHARED(mnt)) { + mnt_release_group_id(mnt); + CLEAR_MNT_SHARED(mnt); + } + master = mnt->mnt_master; + if (!master) { + struct list_head *p = &mnt->mnt_slave_list; + while (!list_empty(p)) { + slave_mnt = list_first_entry(p, + struct mount, mnt_slave); + list_del_init(&slave_mnt->mnt_slave); + slave_mnt->mnt_master = NULL; + } + return 0; + } } else { - struct list_head *p = &mnt->mnt_slave_list; - while (!list_empty(p)) { - slave_mnt = list_first_entry(p, - struct mount, mnt_slave); - list_del_init(&slave_mnt->mnt_slave); - slave_mnt->mnt_master = NULL; + struct mount *m; + /* + * slave 'mnt' to a peer mount that has the + * same root dentry. If none is available then + * slave it to anything that is available. + */ + for (m = master = next_peer(mnt); m != mnt; m = next_peer(m)) { + if (m->mnt.mnt_root == mnt->mnt.mnt_root) { + master = m; + break; + } } + list_del_init(&mnt->mnt_share); + mnt->mnt_group_id = 0; + CLEAR_MNT_SHARED(mnt); } + list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave) + slave_mnt->mnt_master = master; + list_move(&mnt->mnt_slave, &master->mnt_slave_list); + list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev); + INIT_LIST_HEAD(&mnt->mnt_slave_list); mnt->mnt_master = master; - CLEAR_MNT_SHARED(mnt); return 0; } diff --git a/fs/proc/base.c b/fs/proc/base.c index 5ea836362870..8e7e61b28f31 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -47,7 +47,7 @@ * Overall revision about smaps. */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/time.h> diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 7eb3cefcf2a3..f6a01f09f79d 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -22,7 +22,7 @@ #include <linux/bitops.h> #include <linux/spinlock.h> #include <linux/completion.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 873300164dc6..842a5ff5b85c 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -24,7 +24,7 @@ #include <linux/mount.h> #include <linux/magic.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 5c89a07e3d7f..0b80ad87b4d6 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -23,7 +23,7 @@ #include <linux/bootmem.h> #include <linux/init.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/io.h> #include <linux/list.h> #include <linux/ioport.h> diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c index 05f8dcdb086e..f9387bb7631b 100644 --- a/fs/proc/kmsg.c +++ b/fs/proc/kmsg.c @@ -14,7 +14,7 @@ #include <linux/fs.h> #include <linux/syslog.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/io.h> extern wait_queue_head_t log_wait; diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c index f8595e8b5cd0..75634379f82e 100644 --- a/fs/proc/nommu.c +++ b/fs/proc/nommu.c @@ -25,7 +25,7 @@ #include <linux/seq_file.h> #include <linux/hugetlb.h> #include <linux/vmalloc.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/pgtable.h> #include <asm/tlb.h> #include <asm/div64.h> diff --git a/fs/proc/page.c b/fs/proc/page.c index 3ecd445e830d..a2066e6dee90 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -13,7 +13,7 @@ #include <linux/mmu_notifier.h> #include <linux/page_idle.h> #include <linux/kernel-page-flags.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" #define KPMSIZE sizeof(u64) diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index 7ae6b1da7cab..ffd72a6c6e04 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -8,7 +8,7 @@ * proc net directory handling functions */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/time.h> diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c index 15f327bed8c6..901bd06f437d 100644 --- a/fs/proc/proc_tty.c +++ b/fs/proc/proc_tty.c @@ -4,7 +4,7 @@ * Copyright 1997, Theodore Ts'o */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/module.h> #include <linux/init.h> #include <linux/errno.h> diff --git a/fs/proc/root.c b/fs/proc/root.c index 4bd0373576b5..1988440b2049 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -6,7 +6,7 @@ * proc root directory handling functions */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/time.h> diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 958f32545064..8f96a49178d0 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -17,7 +17,7 @@ #include <linux/shmem_fs.h> #include <asm/elf.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/tlbflush.h> #include "internal.h" diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 8ab782d8b33d..5105b1599981 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -22,7 +22,7 @@ #include <linux/list.h> #include <linux/vmalloc.h> #include <linux/pagemap.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/io.h> #include "internal.h" diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index 2bcbf4e77982..2ef7ce75c062 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -23,7 +23,7 @@ #include <linux/sched.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" static int ramfs_nommu_setattr(struct dentry *, struct iattr *); diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index 8621c039b536..26e45863e499 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -35,7 +35,7 @@ #include <linux/parser.h> #include <linux/magic.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "internal.h" #define RAMFS_DEFAULT_MODE 0755 diff --git a/fs/read_write.c b/fs/read_write.c index da6de12b5c46..5816d4c4cab0 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -20,7 +20,7 @@ #include <linux/fs.h> #include "internal.h" -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/unistd.h> typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *); @@ -1669,6 +1669,9 @@ static int clone_verify_area(struct file *file, loff_t pos, u64 len, bool write) * Check that the two inodes are eligible for cloning, the ranges make * sense, and then flush all dirty data. Caller must ensure that the * inodes have been locked against any other modifications. + * + * Returns: 0 for "nothing to clone", 1 for "something to clone", or + * the usual negative error code. */ int vfs_clone_file_prep_inodes(struct inode *inode_in, loff_t pos_in, struct inode *inode_out, loff_t pos_out, @@ -1695,17 +1698,15 @@ int vfs_clone_file_prep_inodes(struct inode *inode_in, loff_t pos_in, /* Are we going all the way to the end? */ isize = i_size_read(inode_in); - if (isize == 0) { - *len = 0; + if (isize == 0) return 0; - } /* Zero length dedupe exits immediately; reflink goes to EOF. */ if (*len == 0) { - if (is_dedupe) { - *len = 0; + if (is_dedupe || pos_in == isize) return 0; - } + if (pos_in > isize) + return -EINVAL; *len = isize - pos_in; } @@ -1769,7 +1770,7 @@ int vfs_clone_file_prep_inodes(struct inode *inode_in, loff_t pos_in, return -EBADE; } - return 0; + return 1; } EXPORT_SYMBOL(vfs_clone_file_prep_inodes); @@ -1955,6 +1956,9 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same) goto out; ret = 0; + if (off + len > i_size_read(src)) + return -EINVAL; + /* pre-format output fields to sane values */ for (i = 0; i < count; i++) { same->info[i].bytes_deduped = 0ULL; diff --git a/fs/readdir.c b/fs/readdir.c index 9d0212c374d6..0e8a7f355f7a 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -19,7 +19,7 @@ #include <linux/syscalls.h> #include <linux/unistd.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> int iterate_dir(struct file *file, struct dir_context *ctx) { diff --git a/fs/select.c b/fs/select.c index 3d4f85defeab..305c0daf5d67 100644 --- a/fs/select.c +++ b/fs/select.c @@ -31,7 +31,7 @@ #include <net/busy_poll.h> #include <linux/vmalloc.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> /* diff --git a/fs/seq_file.c b/fs/seq_file.c index 368bfb92b115..ca69fb99e41a 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -15,7 +15,7 @@ #include <linux/printk.h> #include <linux/string_helpers.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/page.h> static void seq_set_overflow(struct seq_file *m) @@ -190,6 +190,13 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) */ m->version = file->f_version; + /* + * if request is to read from zero offset, reset iterator to first + * record as it might have been already advanced by previous requests + */ + if (*ppos == 0) + m->index = 0; + /* Don't assume *ppos is where we left it */ if (unlikely(*ppos != m->read_pos)) { while ((err = traverse(m, *ppos)) == -EAGAIN) diff --git a/fs/stat.c b/fs/stat.c index 0b210c3ead5c..a268b7f27adf 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -15,7 +15,7 @@ #include <linux/syscalls.h> #include <linux/pagemap.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/unistd.h> void generic_fillattr(struct inode *inode, struct kstat *stat) diff --git a/fs/timerfd.c b/fs/timerfd.c index 9ae4abb4110b..c173cc196175 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -55,7 +55,7 @@ static inline bool isalarm(struct timerfd_ctx *ctx) /* * This gets called when the timer event triggers. We set the "expired" * flag, but we do not re-arm the timer (in case it's necessary, - * tintv.tv64 != 0) until the timer is accessed. + * tintv != 0) until the timer is accessed. */ static void timerfd_triggered(struct timerfd_ctx *ctx) { @@ -93,7 +93,7 @@ static enum alarmtimer_restart timerfd_alarmproc(struct alarm *alarm, */ void timerfd_clock_was_set(void) { - ktime_t moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 }); + ktime_t moffs = ktime_mono_to_real(0); struct timerfd_ctx *ctx; unsigned long flags; @@ -102,8 +102,8 @@ void timerfd_clock_was_set(void) if (!ctx->might_cancel) continue; spin_lock_irqsave(&ctx->wqh.lock, flags); - if (ctx->moffs.tv64 != moffs.tv64) { - ctx->moffs.tv64 = KTIME_MAX; + if (ctx->moffs != moffs) { + ctx->moffs = KTIME_MAX; ctx->ticks++; wake_up_locked(&ctx->wqh); } @@ -124,9 +124,9 @@ static void timerfd_remove_cancel(struct timerfd_ctx *ctx) static bool timerfd_canceled(struct timerfd_ctx *ctx) { - if (!ctx->might_cancel || ctx->moffs.tv64 != KTIME_MAX) + if (!ctx->might_cancel || ctx->moffs != KTIME_MAX) return false; - ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 }); + ctx->moffs = ktime_mono_to_real(0); return true; } @@ -155,7 +155,7 @@ static ktime_t timerfd_get_remaining(struct timerfd_ctx *ctx) else remaining = hrtimer_expires_remaining_adjusted(&ctx->t.tmr); - return remaining.tv64 < 0 ? ktime_set(0, 0): remaining; + return remaining < 0 ? 0: remaining; } static int timerfd_setup(struct timerfd_ctx *ctx, int flags, @@ -184,7 +184,7 @@ static int timerfd_setup(struct timerfd_ctx *ctx, int flags, ctx->t.tmr.function = timerfd_tmrproc; } - if (texp.tv64 != 0) { + if (texp != 0) { if (isalarm(ctx)) { if (flags & TFD_TIMER_ABSTIME) alarm_start(&ctx->t.alarm, texp); @@ -261,9 +261,9 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count, if (ctx->ticks) { ticks = ctx->ticks; - if (ctx->expired && ctx->tintv.tv64) { + if (ctx->expired && ctx->tintv) { /* - * If tintv.tv64 != 0, this is a periodic timer that + * If tintv != 0, this is a periodic timer that * needs to be re-armed. We avoid doing it in the timer * callback to avoid DoS attacks specifying a very * short timer period. @@ -410,7 +410,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags) else hrtimer_init(&ctx->t.tmr, clockid, HRTIMER_MODE_ABS); - ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 }); + ctx->moffs = ktime_mono_to_real(0); ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx, O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS)); @@ -469,7 +469,7 @@ static int do_timerfd_settime(int ufd, int flags, * We do not update "ticks" and "expired" since the timer will be * re-programmed again in the following timerfd_setup() call. */ - if (ctx->expired && ctx->tintv.tv64) { + if (ctx->expired && ctx->tintv) { if (isalarm(ctx)) alarm_forward_now(&ctx->t.alarm, ctx->tintv); else @@ -499,7 +499,7 @@ static int do_timerfd_gettime(int ufd, struct itimerspec *t) ctx = f.file->private_data; spin_lock_irq(&ctx->wqh.lock); - if (ctx->expired && ctx->tintv.tv64) { + if (ctx->expired && ctx->tintv) { ctx->expired = 0; if (isalarm(ctx)) { diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 45ceb94e89e4..7e41aee7b69a 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -25,7 +25,7 @@ * David S. Miller (davem@caip.rutgers.edu), 1995 */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/fs.h> @@ -1191,7 +1191,7 @@ out: return err; } -void ufs_truncate_blocks(struct inode *inode) +static void ufs_truncate_blocks(struct inode *inode) { if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) diff --git a/fs/ufs/super.c b/fs/ufs/super.c index f04ab232d08d..131b2b77c818 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -71,7 +71,7 @@ #include <stdarg.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/errno.h> #include <linux/fs.h> diff --git a/fs/utimes.c b/fs/utimes.c index 5fdb505e307c..32b15b3f6629 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -8,7 +8,7 @@ #include <linux/stat.h> #include <linux/utime.h> #include <linux/syscalls.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/unistd.h> #ifdef __ARCH_WANT_SYS_UTIME diff --git a/fs/xattr.c b/fs/xattr.c index 2d13b4e62fae..7e3317cf4045 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -22,7 +22,7 @@ #include <linux/vmalloc.h> #include <linux/posix_acl_xattr.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> static const char * strcmp_prefix(const char *a, const char *a_prefix) diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index 321f57721b92..7c49938c5aed 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -19,7 +19,7 @@ #include <linux/ioctl.h> #include <linux/mount.h> #include <linux/slab.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "xfs.h" #include "xfs_fs.h" #include "xfs_format.h" diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index a415f822f2c1..e467218c0098 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -83,7 +83,7 @@ typedef __u32 xfs_nlink_t; #include <asm/page.h> #include <asm/div64.h> #include <asm/param.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include <asm/unaligned.h> diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index aca2d4bd4303..07593a362cd0 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -1161,7 +1161,7 @@ xfs_reflink_remap_range( ret = vfs_clone_file_prep_inodes(inode_in, pos_in, inode_out, pos_out, &len, is_dedupe); - if (ret || len == 0) + if (ret <= 0) goto out_unlock; trace_xfs_reflink_remap_range(src, pos_in, len, dest, pos_out); |
