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| author | Amir Goldstein <amir73il@gmail.com> | 2023-12-12 11:44:40 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-12-12 16:20:02 +0100 |
| commit | d9e5d31084b024734e64307521414ef0ae1d5333 (patch) | |
| tree | 5cad647473aa9eba5963c8d8caa7cf7dac635200 /fs/remap_range.c | |
| parent | cb383f06686734ef04daf63a4369566800717b7b (diff) | |
| download | linux-d9e5d31084b024734e64307521414ef0ae1d5333.tar.gz linux-d9e5d31084b024734e64307521414ef0ae1d5333.tar.bz2 linux-d9e5d31084b024734e64307521414ef0ae1d5333.zip | |
fsnotify: optionally pass access range in file permission hooks
In preparation for pre-content permission events with file access range,
move fsnotify_file_perm() hook out of security_file_permission() and into
the callers.
Callers that have the access range information call the new hook
fsnotify_file_area_perm() with the access range.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-6-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/remap_range.c')
| -rw-r--r-- | fs/remap_range.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/remap_range.c b/fs/remap_range.c index 12131f2a6c9e..f8c1120b8311 100644 --- a/fs/remap_range.c +++ b/fs/remap_range.c @@ -102,7 +102,9 @@ static int generic_remap_checks(struct file *file_in, loff_t pos_in, static int remap_verify_area(struct file *file, loff_t pos, loff_t len, bool write) { + int mask = write ? MAY_WRITE : MAY_READ; loff_t tmp; + int ret; if (unlikely(pos < 0 || len < 0)) return -EINVAL; @@ -110,7 +112,11 @@ static int remap_verify_area(struct file *file, loff_t pos, loff_t len, if (unlikely(check_add_overflow(pos, len, &tmp))) return -EINVAL; - return security_file_permission(file, write ? MAY_WRITE : MAY_READ); + ret = security_file_permission(file, mask); + if (ret) + return ret; + + return fsnotify_file_area_perm(file, mask, &pos, len); } /* |