summaryrefslogtreecommitdiffstats
path: root/kernel/fs/posix_acl.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/fs/posix_acl.c')
-rw-r--r--kernel/fs/posix_acl.c82
1 files changed, 38 insertions, 44 deletions
diff --git a/kernel/fs/posix_acl.c b/kernel/fs/posix_acl.c
index 84bb65b83..4adde1e2c 100644
--- a/kernel/fs/posix_acl.c
+++ b/kernel/fs/posix_acl.c
@@ -547,51 +547,45 @@ posix_acl_create(struct inode *dir, umode_t *mode,
struct posix_acl **default_acl, struct posix_acl **acl)
{
struct posix_acl *p;
+ struct posix_acl *clone;
int ret;
+ *acl = NULL;
+ *default_acl = NULL;
+
if (S_ISLNK(*mode) || !IS_POSIXACL(dir))
- goto no_acl;
+ return 0;
p = get_acl(dir, ACL_TYPE_DEFAULT);
- if (IS_ERR(p)) {
- if (p == ERR_PTR(-EOPNOTSUPP))
- goto apply_umask;
- return PTR_ERR(p);
+ if (!p || p == ERR_PTR(-EOPNOTSUPP)) {
+ *mode &= ~current_umask();
+ return 0;
}
+ if (IS_ERR(p))
+ return PTR_ERR(p);
- if (!p)
- goto apply_umask;
-
- *acl = posix_acl_clone(p, GFP_NOFS);
- if (!*acl)
+ clone = posix_acl_clone(p, GFP_NOFS);
+ if (!clone)
goto no_mem;
- ret = posix_acl_create_masq(*acl, mode);
+ ret = posix_acl_create_masq(clone, mode);
if (ret < 0)
goto no_mem_clone;
- if (ret == 0) {
- posix_acl_release(*acl);
- *acl = NULL;
- }
+ if (ret == 0)
+ posix_acl_release(clone);
+ else
+ *acl = clone;
- if (!S_ISDIR(*mode)) {
+ if (!S_ISDIR(*mode))
posix_acl_release(p);
- *default_acl = NULL;
- } else {
+ else
*default_acl = p;
- }
- return 0;
-apply_umask:
- *mode &= ~current_umask();
-no_acl:
- *default_acl = NULL;
- *acl = NULL;
return 0;
no_mem_clone:
- posix_acl_release(*acl);
+ posix_acl_release(clone);
no_mem:
posix_acl_release(p);
return -ENOMEM;
@@ -768,18 +762,21 @@ posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl,
EXPORT_SYMBOL (posix_acl_to_xattr);
static int
-posix_acl_xattr_get(struct dentry *dentry, const char *name,
- void *value, size_t size, int type)
+posix_acl_xattr_get(const struct xattr_handler *handler,
+ struct dentry *dentry, const char *name,
+ void *value, size_t size)
{
struct posix_acl *acl;
int error;
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
if (!IS_POSIXACL(d_backing_inode(dentry)))
return -EOPNOTSUPP;
if (d_is_symlink(dentry))
return -EOPNOTSUPP;
- acl = get_acl(d_backing_inode(dentry), type);
+ acl = get_acl(d_backing_inode(dentry), handler->flags);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl == NULL)
@@ -792,19 +789,22 @@ posix_acl_xattr_get(struct dentry *dentry, const char *name,
}
static int
-posix_acl_xattr_set(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags, int type)
+posix_acl_xattr_set(const struct xattr_handler *handler,
+ struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
{
struct inode *inode = d_backing_inode(dentry);
struct posix_acl *acl = NULL;
int ret;
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
if (!IS_POSIXACL(inode))
return -EOPNOTSUPP;
if (!inode->i_op->set_acl)
return -EOPNOTSUPP;
- if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+ if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
return value ? -EACCES : 0;
if (!inode_owner_or_capable(inode))
return -EPERM;
@@ -821,28 +821,22 @@ posix_acl_xattr_set(struct dentry *dentry, const char *name,
}
}
- ret = inode->i_op->set_acl(inode, acl, type);
+ ret = inode->i_op->set_acl(inode, acl, handler->flags);
out:
posix_acl_release(acl);
return ret;
}
static size_t
-posix_acl_xattr_list(struct dentry *dentry, char *list, size_t list_size,
- const char *name, size_t name_len, int type)
+posix_acl_xattr_list(const struct xattr_handler *handler,
+ struct dentry *dentry, char *list, size_t list_size,
+ const char *name, size_t name_len)
{
- const char *xname;
+ const char *xname = handler->prefix;
size_t size;
if (!IS_POSIXACL(d_backing_inode(dentry)))
- return -EOPNOTSUPP;
- if (d_is_symlink(dentry))
- return -EOPNOTSUPP;
-
- if (type == ACL_TYPE_ACCESS)
- xname = POSIX_ACL_XATTR_ACCESS;
- else
- xname = POSIX_ACL_XATTR_DEFAULT;
+ return 0;
size = strlen(xname) + 1;
if (list && size <= list_size)