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-rw-r--r--fs/cifs/cifsfs.c70
-rw-r--r--fs/cifs/cifsfs.h6
-rw-r--r--fs/cifs/file.c20
-rw-r--r--fs/cifs/ioctl.c126
-rw-r--r--fs/cifs/link.c10
-rw-r--r--fs/cifs/xattr.c16
6 files changed, 151 insertions, 97 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index cbc0f4bca0c0..e24ca79b140c 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -640,9 +640,9 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
while (*s && *s != sep)
s++;
- mutex_lock(&dir->i_mutex);
+ inode_lock(dir);
child = lookup_one_len(p, dentry, s - p);
- mutex_unlock(&dir->i_mutex);
+ inode_unlock(dir);
dput(dentry);
dentry = child;
} while (!IS_ERR(dentry));
@@ -900,8 +900,7 @@ const struct inode_operations cifs_file_inode_ops = {
const struct inode_operations cifs_symlink_inode_ops = {
.readlink = generic_readlink,
- .follow_link = cifs_follow_link,
- .put_link = kfree_put_link,
+ .get_link = cifs_get_link,
.permission = cifs_permission,
/* BB add the following two eventually */
/* revalidate: cifs_revalidate,
@@ -914,6 +913,59 @@ const struct inode_operations cifs_symlink_inode_ops = {
#endif
};
+static int cifs_clone_file_range(struct file *src_file, loff_t off,
+ struct file *dst_file, loff_t destoff, u64 len)
+{
+ struct inode *src_inode = file_inode(src_file);
+ struct inode *target_inode = file_inode(dst_file);
+ struct cifsFileInfo *smb_file_src = src_file->private_data;
+ struct cifsFileInfo *smb_file_target = dst_file->private_data;
+ struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink);
+ unsigned int xid;
+ int rc;
+
+ cifs_dbg(FYI, "clone range\n");
+
+ xid = get_xid();
+
+ if (!src_file->private_data || !dst_file->private_data) {
+ rc = -EBADF;
+ cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
+ goto out;
+ }
+
+ /*
+ * Note: cifs case is easier than btrfs since server responsible for
+ * checks for proper open modes and file type and if it wants
+ * server could even support copy of range where source = target
+ */
+ lock_two_nondirectories(target_inode, src_inode);
+
+ if (len == 0)
+ len = src_inode->i_size - off;
+
+ cifs_dbg(FYI, "about to flush pages\n");
+ /* should we flush first and last page first */
+ truncate_inode_pages_range(&target_inode->i_data, destoff,
+ PAGE_CACHE_ALIGN(destoff + len)-1);
+
+ if (target_tcon->ses->server->ops->duplicate_extents)
+ rc = target_tcon->ses->server->ops->duplicate_extents(xid,
+ smb_file_src, smb_file_target, off, len, destoff);
+ else
+ rc = -EOPNOTSUPP;
+
+ /* force revalidate of size and timestamps of target file now
+ that target is updated on the server */
+ CIFS_I(target_inode)->time = 0;
+ /* although unlocking in the reverse order from locking is not
+ strictly necessary here it is a little cleaner to be consistent */
+ unlock_two_nondirectories(src_inode, target_inode);
+out:
+ free_xid(xid);
+ return rc;
+}
+
const struct file_operations cifs_file_ops = {
.read_iter = cifs_loose_read_iter,
.write_iter = cifs_file_write_iter,
@@ -926,6 +978,7 @@ const struct file_operations cifs_file_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -942,6 +995,8 @@ const struct file_operations cifs_file_strict_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -958,6 +1013,7 @@ const struct file_operations cifs_file_direct_ops = {
.mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
@@ -974,6 +1030,7 @@ const struct file_operations cifs_file_nobrl_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -989,6 +1046,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
.splice_read = generic_file_splice_read,
.llseek = cifs_llseek,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
};
@@ -1004,6 +1062,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
.mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = cifs_llseek,
.setlease = cifs_setlease,
.fallocate = cifs_fallocate,
@@ -1014,6 +1073,7 @@ const struct file_operations cifs_dir_ops = {
.release = cifs_closedir,
.read = generic_read_dir,
.unlocked_ioctl = cifs_ioctl,
+ .clone_file_range = cifs_clone_file_range,
.llseek = generic_file_llseek,
};
@@ -1032,7 +1092,7 @@ cifs_init_inodecache(void)
cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
sizeof(struct cifsInodeInfo),
0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD),
+ SLAB_MEM_SPREAD|SLAB_ACCOUNT),
cifs_init_once);
if (cifs_inode_cachep == NULL)
return -ENOMEM;
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index c3cc1609025f..68c4547528c4 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -120,9 +120,8 @@ extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
#endif
/* Functions related to symlinks */
-extern const char *cifs_follow_link(struct dentry *direntry, void **cookie);
-extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
- int buflen);
+extern const char *cifs_get_link(struct dentry *, struct inode *,
+ struct delayed_call *);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
const char *symname);
extern int cifs_removexattr(struct dentry *, const char *);
@@ -131,7 +130,6 @@ extern int cifs_setxattr(struct dentry *, const char *, const void *,
extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
-
#ifdef CONFIG_CIFS_NFSD_EXPORT
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 0068e82217c3..ff882aeaccc6 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2267,7 +2267,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (rc)
return rc;
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
xid = get_xid();
@@ -2292,7 +2292,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
}
free_xid(xid);
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
return rc;
}
@@ -2309,7 +2309,7 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (rc)
return rc;
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
xid = get_xid();
@@ -2326,7 +2326,7 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
}
free_xid(xid);
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
return rc;
}
@@ -2672,7 +2672,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
* with a brlock that prevents writing.
*/
down_read(&cinode->lock_sem);
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
rc = generic_write_checks(iocb, from);
if (rc <= 0)
@@ -2685,7 +2685,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
else
rc = -EACCES;
out:
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
if (rc > 0) {
ssize_t err = generic_write_sync(file, iocb->ki_pos - rc, rc);
@@ -3391,13 +3391,13 @@ readpages_get_pages(struct address_space *mapping, struct list_head *page_list,
* should have access to this page, we're safe to simply set
* PG_locked without checking it first.
*/
- __set_page_locked(page);
+ __SetPageLocked(page);
rc = add_to_page_cache_locked(page, mapping,
page->index, gfp);
/* give up if we can't stick it in the cache */
if (rc) {
- __clear_page_locked(page);
+ __ClearPageLocked(page);
return rc;
}
@@ -3418,9 +3418,9 @@ readpages_get_pages(struct address_space *mapping, struct list_head *page_list,
if (*bytes + PAGE_CACHE_SIZE > rsize)
break;
- __set_page_locked(page);
+ __SetPageLocked(page);
if (add_to_page_cache_locked(page, mapping, page->index, gfp)) {
- __clear_page_locked(page);
+ __ClearPageLocked(page);
break;
}
list_move_tail(&page->lru, tmplist);
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 35cf990f87d3..7a3b84e300f8 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -34,73 +34,36 @@
#include "cifs_ioctl.h"
#include <linux/btrfs.h>
-static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
- unsigned long srcfd, u64 off, u64 len, u64 destoff,
- bool dup_extents)
+static int cifs_file_clone_range(unsigned int xid, struct file *src_file,
+ struct file *dst_file)
{
- int rc;
- struct cifsFileInfo *smb_file_target = dst_file->private_data;
+ struct inode *src_inode = file_inode(src_file);
struct inode *target_inode = file_inode(dst_file);
- struct cifs_tcon *target_tcon;
- struct fd src_file;
struct cifsFileInfo *smb_file_src;
- struct inode *src_inode;
+ struct cifsFileInfo *smb_file_target;
struct cifs_tcon *src_tcon;
+ struct cifs_tcon *target_tcon;
+ int rc;
cifs_dbg(FYI, "ioctl clone range\n");
- /* the destination must be opened for writing */
- if (!(dst_file->f_mode & FMODE_WRITE)) {
- cifs_dbg(FYI, "file target not open for write\n");
- return -EINVAL;
- }
- /* check if target volume is readonly and take reference */
- rc = mnt_want_write_file(dst_file);
- if (rc) {
- cifs_dbg(FYI, "mnt_want_write failed with rc %d\n", rc);
- return rc;
- }
-
- src_file = fdget(srcfd);
- if (!src_file.file) {
- rc = -EBADF;
- goto out_drop_write;
- }
-
- if (src_file.file->f_op->unlocked_ioctl != cifs_ioctl) {
- rc = -EBADF;
- cifs_dbg(VFS, "src file seems to be from a different filesystem type\n");
- goto out_fput;
- }
-
- if ((!src_file.file->private_data) || (!dst_file->private_data)) {
+ if (!src_file->private_data || !dst_file->private_data) {
rc = -EBADF;
cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
- goto out_fput;
+ goto out;
}
rc = -EXDEV;
smb_file_target = dst_file->private_data;
- smb_file_src = src_file.file->private_data;
+ smb_file_src = src_file->private_data;
src_tcon = tlink_tcon(smb_file_src->tlink);
target_tcon = tlink_tcon(smb_file_target->tlink);
- /* check source and target on same server (or volume if dup_extents) */
- if (dup_extents && (src_tcon != target_tcon)) {
- cifs_dbg(VFS, "source and target of copy not on same share\n");
- goto out_fput;
- }
-
- if (!dup_extents && (src_tcon->ses != target_tcon->ses)) {
+ if (src_tcon->ses != target_tcon->ses) {
cifs_dbg(VFS, "source and target of copy not on same server\n");
- goto out_fput;
+ goto out;
}
- src_inode = file_inode(src_file.file);
- rc = -EINVAL;
- if (S_ISDIR(src_inode->i_mode))
- goto out_fput;
-
/*
* Note: cifs case is easier than btrfs since server responsible for
* checks for proper open modes and file type and if it wants
@@ -108,34 +71,66 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
*/
lock_two_nondirectories(target_inode, src_inode);
- /* determine range to clone */
- rc = -EINVAL;
- if (off + len > src_inode->i_size || off + len < off)
- goto out_unlock;
- if (len == 0)
- len = src_inode->i_size - off;
-
cifs_dbg(FYI, "about to flush pages\n");
/* should we flush first and last page first */
- truncate_inode_pages_range(&target_inode->i_data, destoff,
- PAGE_CACHE_ALIGN(destoff + len)-1);
+ truncate_inode_pages(&target_inode->i_data, 0);
- if (dup_extents && target_tcon->ses->server->ops->duplicate_extents)
- rc = target_tcon->ses->server->ops->duplicate_extents(xid,
- smb_file_src, smb_file_target, off, len, destoff);
- else if (!dup_extents && target_tcon->ses->server->ops->clone_range)
+ if (target_tcon->ses->server->ops->clone_range)
rc = target_tcon->ses->server->ops->clone_range(xid,
- smb_file_src, smb_file_target, off, len, destoff);
+ smb_file_src, smb_file_target, 0, src_inode->i_size, 0);
else
rc = -EOPNOTSUPP;
/* force revalidate of size and timestamps of target file now
that target is updated on the server */
CIFS_I(target_inode)->time = 0;
-out_unlock:
/* although unlocking in the reverse order from locking is not
strictly necessary here it is a little cleaner to be consistent */
unlock_two_nondirectories(src_inode, target_inode);
+out:
+ return rc;
+}
+
+static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
+ unsigned long srcfd)
+{
+ int rc;
+ struct fd src_file;
+ struct inode *src_inode;
+
+ cifs_dbg(FYI, "ioctl clone range\n");
+ /* the destination must be opened for writing */
+ if (!(dst_file->f_mode & FMODE_WRITE)) {
+ cifs_dbg(FYI, "file target not open for write\n");
+ return -EINVAL;
+ }
+
+ /* check if target volume is readonly and take reference */
+ rc = mnt_want_write_file(dst_file);
+ if (rc) {
+ cifs_dbg(FYI, "mnt_want_write failed with rc %d\n", rc);
+ return rc;
+ }
+
+ src_file = fdget(srcfd);
+ if (!src_file.file) {
+ rc = -EBADF;
+ goto out_drop_write;
+ }
+
+ if (src_file.file->f_op->unlocked_ioctl != cifs_ioctl) {
+ rc = -EBADF;
+ cifs_dbg(VFS, "src file seems to be from a different filesystem type\n");
+ goto out_fput;
+ }
+
+ src_inode = file_inode(src_file.file);
+ rc = -EINVAL;
+ if (S_ISDIR(src_inode->i_mode))
+ goto out_fput;
+
+ rc = cifs_file_clone_range(xid, src_file.file, dst_file);
+
out_fput:
fdput(src_file);
out_drop_write:
@@ -256,10 +251,7 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
}
break;
case CIFS_IOC_COPYCHUNK_FILE:
- rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, false);
- break;
- case BTRFS_IOC_CLONE:
- rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, true);
+ rc = cifs_ioctl_clone(xid, filep, arg);
break;
case CIFS_IOC_SET_INTEGRITY:
if (pSMBFile == NULL)
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index e3548f73bdea..062c2375549a 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -627,9 +627,9 @@ cifs_hl_exit:
}
const char *
-cifs_follow_link(struct dentry *direntry, void **cookie)
+cifs_get_link(struct dentry *direntry, struct inode *inode,
+ struct delayed_call *done)
{
- struct inode *inode = d_inode(direntry);
int rc = -ENOMEM;
unsigned int xid;
char *full_path = NULL;
@@ -639,6 +639,9 @@ cifs_follow_link(struct dentry *direntry, void **cookie)
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
+ if (!direntry)
+ return ERR_PTR(-ECHILD);
+
xid = get_xid();
tlink = cifs_sb_tlink(cifs_sb);
@@ -678,7 +681,8 @@ cifs_follow_link(struct dentry *direntry, void **cookie)
kfree(target_path);
return ERR_PTR(rc);
}
- return *cookie = target_path;
+ set_delayed_call(done, kfree_link, target_path);
+ return target_path;
}
int
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index ff9e1f8b16a4..f5dc2f0df4ad 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -190,8 +190,8 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
#endif /* CONFIG_CIFS_ACL */
} else {
int temp;
- temp = strncmp(ea_name, POSIX_ACL_XATTR_ACCESS,
- strlen(POSIX_ACL_XATTR_ACCESS));
+ temp = strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
+ strlen(XATTR_NAME_POSIX_ACL_ACCESS));
if (temp == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
@@ -203,8 +203,8 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
#else
cifs_dbg(FYI, "set POSIX ACL not supported\n");
#endif
- } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT,
- strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
+ } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
+ strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
@@ -292,8 +292,8 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
full_path, ea_name, ea_value, buf_size,
cifs_sb->local_nls, cifs_remap(cifs_sb));
- } else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS,
- strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
+ } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
+ strlen(XATTR_NAME_POSIX_ACL_ACCESS)) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
@@ -303,8 +303,8 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
#else
cifs_dbg(FYI, "Query POSIX ACL not supported yet\n");
#endif /* CONFIG_CIFS_POSIX */
- } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT,
- strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
+ } else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
+ strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
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