diff mbox series

[RFC,v1,4/6] proc: Allow to use the allowlist filter in userns

Message ID 76e8b2d0c0651af6906351b7d43fa2a4d117dc04.1674660533.git.legion@kernel.org (mailing list archive)
State New, archived
Headers show
Series proc: Add allowlist for procfs files | expand

Commit Message

Alexey Gladkov Jan. 25, 2023, 3:28 p.m. UTC 
Signed-off-by: Alexey Gladkov <legion@kernel.org>
---
 fs/proc/proc_allowlist.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/fs/proc/proc_allowlist.c b/fs/proc/proc_allowlist.c
index 2153acb8e467..c605f73622bd 100644
--- a/fs/proc/proc_allowlist.c
+++ b/fs/proc/proc_allowlist.c
@@ -100,7 +100,7 @@  static int open_allowlist(struct inode *inode, struct file *file)
 	struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb);
 	int ret;
 
-	if (!capable(CAP_SYS_ADMIN))
+	if (!ns_capable(current_user_ns(), CAP_SYS_ADMIN))
 		return -EPERM;
 
 	// we need this because shrink_dcache_sb() can't drop our own dentry.
@@ -199,7 +199,7 @@  static const struct proc_ops proc_allowlist_ops = {
 static int __init proc_allowlist_init(void)
 {
 	struct proc_dir_entry *pde;
-	pde = proc_create("allowlist", S_IRUSR | S_IWUSR, NULL, &proc_allowlist_ops);
+	pde = proc_create("allowlist", S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH, NULL, &proc_allowlist_ops);
 	pde_make_permanent(pde);
 	pde_make_allowlist(pde);
 	return 0;