diff options
Diffstat (limited to 'fs/posix_acl.c')
| -rw-r--r-- | fs/posix_acl.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 4ca6d53c6f0a..5d9fe2fb2953 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -345,10 +345,13 @@ EXPORT_SYMBOL(posix_acl_from_mode); * by the acl. Returns -E... otherwise. */ int -posix_acl_permission(struct inode *inode, const struct posix_acl *acl, int want) +posix_acl_permission(struct user_namespace *mnt_userns, struct inode *inode, + const struct posix_acl *acl, int want) { const struct posix_acl_entry *pa, *pe, *mask_obj; int found = 0; + kuid_t uid; + kgid_t gid; want &= MAY_READ | MAY_WRITE | MAY_EXEC; @@ -356,22 +359,26 @@ posix_acl_permission(struct inode *inode, const struct posix_acl *acl, int want) switch(pa->e_tag) { case ACL_USER_OBJ: /* (May have been checked already) */ - if (uid_eq(inode->i_uid, current_fsuid())) + uid = i_uid_into_mnt(mnt_userns, inode); + if (uid_eq(uid, current_fsuid())) goto check_perm; break; case ACL_USER: - if (uid_eq(pa->e_uid, current_fsuid())) + uid = kuid_into_mnt(mnt_userns, pa->e_uid); + if (uid_eq(uid, current_fsuid())) goto mask; break; case ACL_GROUP_OBJ: - if (in_group_p(inode->i_gid)) { + gid = i_gid_into_mnt(mnt_userns, inode); + if (in_group_p(gid)) { found = 1; if ((pa->e_perm & want) == want) goto mask; } break; case ACL_GROUP: - if (in_group_p(pa->e_gid)) { + gid = kgid_into_mnt(mnt_userns, pa->e_gid); + if (in_group_p(gid)) { found = 1; if ((pa->e_perm & want) == want) goto mask; |