jffs2: use generic posix ACL infrastructure

[~andy/linux] / fs / jffs2 / acl.c

diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 4d6e31b19816be4304951a93a4b97da890a3033c..009ec0b5993da879846ba7a733864116684026ca 100644 (file)
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -178,10 +178,6 @@ struct posix_acl *jffs2_get_acl(struct inode *inode, int type)
        char *value = NULL;
        int rc, xprefix;
 
-       acl = get_cached_acl(inode, type);
-       if (acl != ACL_NOT_CACHED)
-               return acl;
-
        switch (type) {
        case ACL_TYPE_ACCESS:
                xprefix = JFFS2_XPREFIX_ACL_ACCESS;
@@ -232,13 +228,10 @@ static int __jffs2_set_acl(struct inode *inode, int xprefix, struct posix_acl *a
        return rc;
 }
 
-static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 {
        int rc, xprefix;
 
-       if (S_ISLNK(inode->i_mode))
-               return -EOPNOTSUPP;
-
        switch (type) {
        case ACL_TYPE_ACCESS:
                xprefix = JFFS2_XPREFIX_ACL_ACCESS;
@@ -277,30 +270,21 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
 
 int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode)
 {
-       struct posix_acl *acl;
+       struct posix_acl *default_acl, *acl;
        int rc;
 
        cache_no_acl(inode);
 
-       if (S_ISLNK(*i_mode))
-               return 0;       /* Symlink always has no-ACL */
-
-       acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT);
-       if (IS_ERR(acl))
-               return PTR_ERR(acl);
-
-       if (!acl) {
-               *i_mode &= ~current_umask();
-       } else {
-               if (S_ISDIR(*i_mode))
-                       set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
-
-               rc = __posix_acl_create(&acl, GFP_KERNEL, i_mode);
-               if (rc < 0)
-                       return rc;
-               if (rc > 0)
-                       set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
+       rc = posix_acl_create(dir_i, i_mode, &default_acl, &acl);
+       if (rc)
+               return rc;
 
+       if (default_acl) {
+               set_cached_acl(inode, ACL_TYPE_DEFAULT, default_acl);
+               posix_acl_release(default_acl);
+       }
+       if (acl) {
+               set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
                posix_acl_release(acl);
        }
        return 0;
@@ -324,106 +308,3 @@ int jffs2_init_acl_post(struct inode *inode)
 
        return 0;
 }
-
-int jffs2_acl_chmod(struct inode *inode)
-{
-       struct posix_acl *acl;
-       int rc;
-
-       if (S_ISLNK(inode->i_mode))
-               return -EOPNOTSUPP;
-       acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
-       if (IS_ERR(acl) || !acl)
-               return PTR_ERR(acl);
-       rc = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
-       if (rc)
-               return rc;
-       rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, acl);
-       posix_acl_release(acl);
-       return rc;
-}
-
-static size_t jffs2_acl_access_listxattr(struct dentry *dentry, char *list,
-               size_t list_size, const char *name, size_t name_len, int type)
-{
-       const int retlen = sizeof(POSIX_ACL_XATTR_ACCESS);
-
-       if (list && retlen <= list_size)
-               strcpy(list, POSIX_ACL_XATTR_ACCESS);
-       return retlen;
-}
-
-static size_t jffs2_acl_default_listxattr(struct dentry *dentry, char *list,
-               size_t list_size, const char *name, size_t name_len, int type)
-{
-       const int retlen = sizeof(POSIX_ACL_XATTR_DEFAULT);
-
-       if (list && retlen <= list_size)
-               strcpy(list, POSIX_ACL_XATTR_DEFAULT);
-       return retlen;
-}
-
-static int jffs2_acl_getxattr(struct dentry *dentry, const char *name,
-               void *buffer, size_t size, int type)
-{
-       struct posix_acl *acl;
-       int rc;
-
-       if (name[0] != '\0')
-               return -EINVAL;
-
-       acl = jffs2_get_acl(dentry->d_inode, type);
-       if (IS_ERR(acl))
-               return PTR_ERR(acl);
-       if (!acl)
-               return -ENODATA;
-       rc = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
-       posix_acl_release(acl);
-
-       return rc;
-}
-
-static int jffs2_acl_setxattr(struct dentry *dentry, const char *name,
-               const void *value, size_t size, int flags, int type)
-{
-       struct posix_acl *acl;
-       int rc;
-
-       if (name[0] != '\0')
-               return -EINVAL;
-       if (!inode_owner_or_capable(dentry->d_inode))
-               return -EPERM;
-
-       if (value) {
-               acl = posix_acl_from_xattr(&init_user_ns, value, size);
-               if (IS_ERR(acl))
-                       return PTR_ERR(acl);
-               if (acl) {
-                       rc = posix_acl_valid(acl);
-                       if (rc)
-                               goto out;
-               }
-       } else {
-               acl = NULL;
-       }
-       rc = jffs2_set_acl(dentry->d_inode, type, acl);
- out:
-       posix_acl_release(acl);
-       return rc;
-}
-
-const struct xattr_handler jffs2_acl_access_xattr_handler = {
-       .prefix = POSIX_ACL_XATTR_ACCESS,
-       .flags  = ACL_TYPE_DEFAULT,
-       .list   = jffs2_acl_access_listxattr,
-       .get    = jffs2_acl_getxattr,
-       .set    = jffs2_acl_setxattr,
-};
-
-const struct xattr_handler jffs2_acl_default_xattr_handler = {
-       .prefix = POSIX_ACL_XATTR_DEFAULT,
-       .flags  = ACL_TYPE_DEFAULT,
-       .list   = jffs2_acl_default_listxattr,
-       .get    = jffs2_acl_getxattr,
-       .set    = jffs2_acl_setxattr,
-};