summaryrefslogtreecommitdiff
path: root/src/nspawn/test-patch-uid.c
diff options
context:
space:
mode:
authorLennart Poettering <lennart@poettering.net>2016-04-20 22:53:39 +0200
committerLennart Poettering <lennart@poettering.net>2016-04-25 12:15:57 +0200
commit7336138eedf1c9b09b432428c4cccc2da25ab9e0 (patch)
treeef2f1b0e4d5e7ea2ceb7e28c3364b06c70730b82 /src/nspawn/test-patch-uid.c
parent6402d5c628f1872a4874508bbe975aaac1cc747b (diff)
nspawn: optionally fix up OS tree uid/gids for userns
This adds a new --private-userns-chown switch that may be used in combination with --private-userns. If it is passed a recursive chmod() operation is run on the OS tree, fixing all file owner UID/GIDs to the right ranges. This should make user namespacing pretty workable, as the OS trees don't need to be prepared manually anymore.
Diffstat (limited to 'src/nspawn/test-patch-uid.c')
-rw-r--r--src/nspawn/test-patch-uid.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/nspawn/test-patch-uid.c b/src/nspawn/test-patch-uid.c
new file mode 100644
index 0000000000..11c5321788
--- /dev/null
+++ b/src/nspawn/test-patch-uid.c
@@ -0,0 +1,61 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+
+#include "log.h"
+#include "nspawn-patch-uid.h"
+#include "user-util.h"
+#include "util.h"
+
+int main(int argc, char *argv[]) {
+ uid_t shift, range;
+ int r;
+
+ log_set_max_level(LOG_DEBUG);
+ log_parse_environment();
+ log_open();
+
+ if (argc != 4) {
+ log_error("Expected PATH SHIFT RANGE parameters.");
+ return EXIT_FAILURE;
+ }
+
+ r = parse_uid(argv[2], &shift);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse UID shift %s.", argv[2]);
+ return EXIT_FAILURE;
+ }
+
+ r = parse_gid(argv[3], &range);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse UID range %s.", argv[3]);
+ return EXIT_FAILURE;
+ }
+
+ r = path_patch_uid(argv[1], shift, range);
+ if (r < 0) {
+ log_error_errno(r, "Failed to patch directory tree: %m");
+ return EXIT_FAILURE;
+ }
+
+ log_info("Changed: %s", yes_no(r));
+
+ return EXIT_SUCCESS;
+}