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(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;
}
static int jffs2_acl_setxattr(struct inode *inode, int type, const void *value, size_t size)
{
struct posix_acl *acl;
int rc;
if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
return -EPERM;
if (value) {
acl = posix_acl_from_xattr(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(inode, type, acl);
out:
posix_acl_release(acl);
return rc;
}
static int jffs2_acl_setxattr(struct inode *inode, int type, const void *value, size_t size)
{
struct posix_acl *acl;
int rc;
if (!is_owner_or_cap(inode))
return -EPERM;
if (value) {
acl = posix_acl_from_xattr(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(inode, type, acl);
out:
posix_acl_release(acl);
return rc;
}
int jffs2_init_acl(struct inode *inode, struct inode *dir)
{
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct posix_acl *acl = NULL, *clone;
mode_t mode;
int rc = 0;
f->i_acl_access = JFFS2_ACL_NOT_CACHED;
f->i_acl_default = JFFS2_ACL_NOT_CACHED;
if (!S_ISLNK(inode->i_mode)) {
acl = jffs2_get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl)
inode->i_mode &= ~current->fs->umask;
}
if (acl) {
if (S_ISDIR(inode->i_mode)) {
rc = jffs2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
if (rc)
goto cleanup;
}
clone = posix_acl_clone(acl, GFP_KERNEL);
rc = -ENOMEM;
if (!clone)
goto cleanup;
mode = inode->i_mode;
rc = posix_acl_create_masq(clone, &mode);
if (rc >= 0) {
inode->i_mode = mode;
if (rc > 0)
rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
}
posix_acl_release(clone);
}
cleanup:
posix_acl_release(acl);
return rc;
}
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;
}
int jffs2_acl_chmod(struct inode *inode)
{
struct posix_acl *acl, *clone;
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);
clone = posix_acl_clone(acl, GFP_KERNEL);
posix_acl_release(acl);
if (!clone)
return -ENOMEM;
rc = posix_acl_chmod_masq(clone, inode->i_mode);
if (!rc)
rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
posix_acl_release(clone);
return rc;
}