diff options
| author | Omar Sandoval <osandov@fb.com> | 2019-09-04 12:13:25 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-03-14 13:13:50 +0100 |
| commit | 871129332d74c9e94bd110932ac4445833995639 (patch) | |
| tree | b684145f2cfd170d35d7b154559f6810d44acbe6 | |
| parent | 457b0a3d6e266f40a367205e224b971e4da7f5f8 (diff) | |
fs: export rw_verify_area()
I'm adding btrfs ioctls to read and write compressed data, and rather
than duplicating the checks in rw_verify_area(), let's just export it.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/internal.h | 5 | ||||
| -rw-r--r-- | fs/read_write.c | 1 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
3 files changed, 2 insertions, 5 deletions
diff --git a/fs/internal.h b/fs/internal.h index 8590c973c2f4..711bdc00ec7c 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -158,11 +158,6 @@ extern void dput_to_list(struct dentry *, struct list_head *); extern void shrink_dentry_list(struct list_head *); /* - * read_write.c - */ -extern int rw_verify_area(int, struct file *, const loff_t *, size_t); - -/* * pipe.c */ extern const struct file_operations pipefifo_fops; diff --git a/fs/read_write.c b/fs/read_write.c index 0074afa7ecb3..4d60146243df 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -385,6 +385,7 @@ int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t return security_file_permission(file, read_write == READ ? MAY_READ : MAY_WRITE); } +EXPORT_SYMBOL(rw_verify_area); static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) { diff --git a/include/linux/fs.h b/include/linux/fs.h index e2d892b201b0..0ebfc2519212 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3173,6 +3173,7 @@ extern loff_t fixed_size_llseek(struct file *file, loff_t offset, int whence, loff_t size); extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t); extern loff_t no_seek_end_llseek(struct file *, loff_t, int); +int rw_verify_area(int, struct file *, const loff_t *, size_t); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); extern int stream_open(struct inode * inode, struct file * filp); |