diff options
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/fs/open.c b/fs/open.c index d6fd3acde13..813be037b41 100644 --- a/fs/open.c +++ b/fs/open.c @@ -222,7 +222,7 @@ SYSCALL_DEFINE2(ftruncate64, unsigned int, fd, loff_t, length) #endif /* BITS_PER_LONG == 32 */ -int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) +int vfs_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { struct inode *inode = file_inode(file); long ret; @@ -295,9 +295,21 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) sb_start_write(inode->i_sb); ret = file->f_op->fallocate(file, mode, offset, len); + + /* + * Create inotify and fanotify events. + * + * To keep the logic simple always create events if fallocate succeeds. + * This implies that events are even created if the file size remains + * unchanged, e.g. when using flag FALLOC_FL_KEEP_SIZE. + */ + if (ret == 0) + fsnotify_modify(file); + sb_end_write(inode->i_sb); return ret; } +EXPORT_SYMBOL_GPL(vfs_fallocate); SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) { @@ -305,7 +317,7 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) int error = -EBADF; if (f.file) { - error = do_fallocate(f.file, mode, offset, len); + error = vfs_fallocate(f.file, mode, offset, len); fdput(f); } return error; @@ -516,7 +528,7 @@ SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode) int err = -EBADF; if (f.file) { - audit_inode(NULL, f.file->f_path.dentry, 0); + audit_file(f.file); err = chmod_common(&f.file->f_path, mode); fdput(f); } @@ -642,7 +654,7 @@ SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group) error = mnt_want_write_file(f.file); if (error) goto out_fput; - audit_inode(NULL, f.file->f_path.dentry, 0); + audit_file(f.file); error = chown_common(&f.file->f_path, user, group); mnt_drop_write_file(f.file); out_fput: @@ -823,8 +835,7 @@ struct file *dentry_open(const struct path *path, int flags, f = get_empty_filp(); if (!IS_ERR(f)) { f->f_flags = flags; - f->f_path = *path; - error = do_dentry_open(f, NULL, cred); + error = vfs_open(path, f, cred); if (!error) { /* from now on we need fput() to dispose of f */ error = open_check_o_direct(f); @@ -841,6 +852,26 @@ struct file *dentry_open(const struct path *path, int flags, } EXPORT_SYMBOL(dentry_open); +/** + * vfs_open - open the file at the given path + * @path: path to open + * @filp: newly allocated file with f_flag initialized + * @cred: credentials to use + */ +int vfs_open(const struct path *path, struct file *filp, + const struct cred *cred) +{ + struct inode *inode = path->dentry->d_inode; + + if (inode->i_op->dentry_open) + return inode->i_op->dentry_open(path->dentry, filp, cred); + else { + filp->f_path = *path; + return do_dentry_open(filp, NULL, cred); + } +} +EXPORT_SYMBOL(vfs_open); + static inline int build_open_flags(int flags, umode_t mode, struct open_flags *op) { int lookup_flags = 0; |