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/* SPDX-License-Identifier: GPL-3.0-or-later */
#include "config.h"
#include "fstree.h"
#include <selinux/selinux.h>
#include <selinux/label.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#define XATTR_NAME_SELINUX "security.selinux"
#define XATTR_VALUE_SELINUX "system_u:object_r:unlabeled_t:s0"
static int relable_node(fstree_t *fs, struct selabel_handle *sehnd,
tree_node_t *node)
{
char *context = NULL, *path;
int ret;
path = fstree_get_path(node);
if (path == NULL)
goto fail;
if (selabel_lookup(sehnd, &context, path, node->mode) < 0) {
context = strdup(XATTR_VALUE_SELINUX);
if (context == NULL)
goto fail;
}
ret = fstree_add_xattr(fs, node, XATTR_NAME_SELINUX, context);
free(context);
free(path);
return ret;
fail:
perror("relabeling files");
free(path);
return -1;
}
int fstree_relabel_selinux(fstree_t *fs, const char *filename)
{
struct selabel_handle *sehnd;
struct selinux_opt seopts[] = {
{ SELABEL_OPT_PATH, filename },
};
size_t i;
int ret = 0;
sehnd = selabel_open(SELABEL_CTX_FILE, seopts, 1);
if (sehnd == NULL) {
perror(filename);
return -1;
}
for (i = 2; i < fs->inode_tbl_size; ++i) {
ret = relable_node(fs, sehnd, fs->inode_table[i]);
if (ret)
break;
}
selabel_close(sehnd);
return ret;
}
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