diff options
| -rw-r--r-- | fs/namei.c | 24 | ||||
| -rw-r--r-- | fs/posix_acl.c | 27 | ||||
| -rw-r--r-- | include/linux/posix_acl.h | 2 |
3 files changed, 32 insertions, 21 deletions
diff --git a/fs/namei.c b/fs/namei.c index 3531deebad30..bcb838e2e52f 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -235,27 +235,9 @@ static int check_acl(struct inode *inode, int mask) return posix_acl_permission(inode, acl, mask & ~MAY_NOT_BLOCK); } - acl = get_cached_acl(inode, ACL_TYPE_ACCESS); - - /* - * A filesystem can force a ACL callback by just never filling the - * ACL cache. But normally you'd fill the cache either at inode - * instantiation time, or on the first ->get_acl call. - * - * If the filesystem doesn't have a get_acl() function at all, we'll - * just create the negative cache entry. - */ - if (acl == ACL_NOT_CACHED) { - if (inode->i_op->get_acl) { - acl = inode->i_op->get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } else { - set_cached_acl(inode, ACL_TYPE_ACCESS, NULL); - return -EAGAIN; - } - } - + acl = get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR(acl)) + return PTR_ERR(acl); if (acl) { int error = posix_acl_permission(inode, acl, mask); posix_acl_release(acl); diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 359d70b0e947..30524de49a6b 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -26,6 +26,33 @@ EXPORT_SYMBOL(posix_acl_valid); EXPORT_SYMBOL(posix_acl_equiv_mode); EXPORT_SYMBOL(posix_acl_from_mode); +struct posix_acl *get_acl(struct inode *inode, int type) +{ + struct posix_acl *acl; + + acl = get_cached_acl(inode, type); + if (acl != ACL_NOT_CACHED) + return acl; + + if (!IS_POSIXACL(inode)) + return NULL; + + /* + * A filesystem can force a ACL callback by just never filling the + * ACL cache. But normally you'd fill the cache either at inode + * instantiation time, or on the first ->get_acl call. + * + * If the filesystem doesn't have a get_acl() function at all, we'll + * just create the negative cache entry. + */ + if (!inode->i_op->get_acl) { + set_cached_acl(inode, type, NULL); + return NULL; + } + return inode->i_op->get_acl(inode, type); +} +EXPORT_SYMBOL(get_acl); + /* * Init a fresh posix_acl */ diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index 7931efe71175..a8d9918c0b20 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -175,4 +175,6 @@ static inline void cache_no_acl(struct inode *inode) #endif } +struct posix_acl *get_acl(struct inode *inode, int type); + #endif /* __LINUX_POSIX_ACL_H */ |