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test-execute: also mount tmpfs on /dev/shm

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Otherwise, if /dev/shm has a directory that cannot be accessible by
unprivileged user, then we cannot pick a dynamic user, and test service
may fail with unexpected error code:
---
Failed to enter shared memory directory /dev/shm/systemd-watch-bind-BqAGlN: Permission denied
exec-dynamicuser-supplementarygroups.service: Failed to update dynamic user credentials: Device or resource busy
exec-dynamicuser-supplementarygroups.service: Failed at step USER spawning /bin/sh: Device or resource busy
src/test/test-execute.c:885:test_exec_dynamicuser: exec-dynamicuser-supplementarygroups.service: can_unshare=no: exit status 217, expected 216
---

Follow-up for 4e032f654b.
This commit is contained in:
Yu Watanabe 2023-02-17 10:21:58 +09:00 committed by Lennart Poettering
parent 8c2264abb9
commit d51e31ac41
1 changed files with 1 additions and 1 deletions
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src/test/test-execute.c
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@ -1267,7 +1267,7 @@ static int prepare_ns(const char *process_name) {
assert_se(mkdir_p(PRIVATE_UNIT_DIR, 0755) >= 0);
/* Mount tmpfs on the following directories to make not StateDirectory= or friends disturb the host. */
FOREACH_STRING(p, "/root", "/tmp", "/var/tmp", "/var/lib", PRIVATE_UNIT_DIR)
FOREACH_STRING(p, "/dev/shm", "/root", "/tmp", "/var/tmp", "/var/lib", PRIVATE_UNIT_DIR)
assert_se(mount_nofollow_verbose(LOG_DEBUG, "tmpfs", p, "tmpfs", MS_NOSUID|MS_NODEV, NULL) >= 0);
/* Copy unit files to make them accessible even when unprivileged. */