From bd14e462bb52f5bbfc56f10f758f617c05dbd63c Mon Sep 17 00:00:00 2001 From: Andrey Albershteyn Date: Mon, 30 Jun 2025 18:20:13 +0200 Subject: selinux: implement inode_file_[g|s]etattr hooks These hooks are called on inode extended attribute retrieval/change. Cc: selinux@vger.kernel.org Cc: Paul Moore Acked-by: Paul Moore Signed-off-by: Andrey Albershteyn Link: https://lore.kernel.org/20250630-xattrat-syscall-v6-3-c4e3bc35227b@kernel.org Signed-off-by: Christian Brauner --- security/selinux/hooks.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'security/selinux/hooks.c') diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 595ceb314aeb..be7aca2269fa 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3480,6 +3480,18 @@ static int selinux_inode_removexattr(struct mnt_idmap *idmap, return -EACCES; } +static int selinux_inode_file_setattr(struct dentry *dentry, + struct fileattr *fa) +{ + return dentry_has_perm(current_cred(), dentry, FILE__SETATTR); +} + +static int selinux_inode_file_getattr(struct dentry *dentry, + struct fileattr *fa) +{ + return dentry_has_perm(current_cred(), dentry, FILE__GETATTR); +} + static int selinux_path_notify(const struct path *path, u64 mask, unsigned int obj_type) { @@ -7350,6 +7362,8 @@ static struct security_hook_list selinux_hooks[] __ro_after_init = { LSM_HOOK_INIT(inode_getxattr, selinux_inode_getxattr), LSM_HOOK_INIT(inode_listxattr, selinux_inode_listxattr), LSM_HOOK_INIT(inode_removexattr, selinux_inode_removexattr), + LSM_HOOK_INIT(inode_file_getattr, selinux_inode_file_getattr), + LSM_HOOK_INIT(inode_file_setattr, selinux_inode_file_setattr), LSM_HOOK_INIT(inode_set_acl, selinux_inode_set_acl), LSM_HOOK_INIT(inode_get_acl, selinux_inode_get_acl), LSM_HOOK_INIT(inode_remove_acl, selinux_inode_remove_acl), -- cgit