diff mbox series

[v2,3/3] sysctl: drop now unnecessary out-of-bounds check

Message ID 20240322-sysctl-empty-dir-v2-3-e559cf8ec7c0@weissschuh.net (mailing list archive)
State New
Headers show
Series sysctl: move sysctl type to ctl_table_header | expand

Commit Message

Thomas Weißschuh March 22, 2024, 5:05 p.m. UTC 
Remove the now unneeded check for ctl_table_size; it is safe
to do so as sysctl_set_perm_empty_ctl_header() does not access the
ctl_table member anymore.

This also makes the element of sysctl_mount_point unnecessary, so drop
it at the same time.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 fs/proc/proc_sysctl.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index fde7a2f773f0..7c0e27dc3d9d 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -30,9 +30,7 @@  static const struct file_operations proc_sys_dir_file_operations;
 static const struct inode_operations proc_sys_dir_operations;
 
 /* Support for permanently empty directories */
-static struct ctl_table sysctl_mount_point[] = {
-	{ }
-};
+static struct ctl_table sysctl_mount_point[] = { };
 
 /**
  * register_sysctl_mount_point() - registers a sysctl mount point
@@ -232,8 +230,7 @@  static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header)
 		return -EROFS;
 
 	/* Am I creating a permanently empty directory? */
-	if (header->ctl_table_size > 0 &&
-	    sysctl_is_perm_empty_ctl_header(header)) {
+	if (sysctl_is_perm_empty_ctl_header(header)) {
 		if (!RB_EMPTY_ROOT(&dir->root))
 			return -EINVAL;
 		sysctl_set_perm_empty_ctl_header(dir_h);