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systemd-nspawn: do not crash on /var/log/journal creation if not required

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When running a read-only file system, we might not be able to create
/var/log/journal. Do not fail on this, unless actually requested by the
--link-journal options.

$ systemd-nspawn --image=image.squashfs ...
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-10-21 19:48:20 +02:00 committed by Lennart Poettering
parent a2689fa5fc
commit 369ca6dab1
1 changed files with 10 additions and 12 deletions
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22
src/nspawn/nspawn.c
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@ -2026,7 +2026,7 @@ static int setup_journal(const char *directory) {
_cleanup_free_ char *d = NULL;
const char *p, *q;
bool try;
char id[33];
char id[33], *dirname;
int r;
/* Don't link journals in ephemeral mode */
@ -2050,17 +2050,15 @@ static int setup_journal(const char *directory) {
return -EEXIST;
}
r = userns_mkdir(directory, "/var", 0755, 0, 0);
if (r < 0)
return log_error_errno(r, "Failed to create /var: %m");
r = userns_mkdir(directory, "/var/log", 0755, 0, 0);
if (r < 0)
return log_error_errno(r, "Failed to create /var/log: %m");
r = userns_mkdir(directory, "/var/log/journal", 0755, 0, 0);
if (r < 0)
return log_error_errno(r, "Failed to create /var/log/journal: %m");
FOREACH_STRING(dirname, "/var", "/var/log", "/var/log/journal") {
r = userns_mkdir(directory, dirname, 0755, 0, 0);
if (r < 0) {
bool ignore = r == -EROFS && try;
log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, r,
"Failed to create %s%s: %m", dirname, ignore ? ", ignoring" : "");
return ignore ? 0 : r;
}
}
(void) sd_id128_to_string(arg_uuid, id);