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core/manager: falling back to execute generators without sandboxing

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When running in a container, like podman, docker or so, creating new mount
namespace may be disabled.

Fixes #26474.
Fixes RHBZ#2165004 (https://bugzilla.redhat.com/show_bug.cgi?id=2165004).
This commit is contained in:
Yu Watanabe 2023-02-19 02:42:52 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 512f2da5c7
commit a2275dcb9d
1 changed files with 14 additions and 1 deletions
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15
src/core/manager.c
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@ -3829,12 +3829,25 @@ static int manager_run_generators(Manager *m) {
}
r = safe_fork("(sd-gens)",
FORK_RESET_SIGNALS | FORK_LOG | FORK_WAIT | FORK_NEW_MOUNTNS | FORK_MOUNTNS_SLAVE | FORK_PRIVATE_TMP,
FORK_RESET_SIGNALS | FORK_WAIT | FORK_NEW_MOUNTNS | FORK_MOUNTNS_SLAVE | FORK_PRIVATE_TMP,
NULL);
if (r == 0) {
r = manager_execute_generators(m, paths, /* remount_ro= */ true);
_exit(r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
if (r < 0) {
if (!ERRNO_IS_PRIVILEGE(r)) {
log_error_errno(r, "Failed to fork off sandboxing environment for executing generators: %m");
goto finish;
}
/* Failed to fork with new mount namespace? Maybe, running in a container environment with
* seccomp or without capability. */
log_debug_errno(r,
"Failed to fork off sandboxing environment for executing generators. "
"Falling back to execute generators without sandboxing: %m");
r = manager_execute_generators(m, paths, /* remount_ro= */ false);
}
finish:
lookup_paths_trim_generator(&m->lookup_paths);