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-rw-r--r--src/journal/journald.c31
-rw-r--r--src/journal/journald.h3
2 files changed, 29 insertions, 5 deletions
diff --git a/src/journal/journald.c b/src/journal/journald.c
index 0194a1b8c9..33865b8120 100644
--- a/src/journal/journald.c
+++ b/src/journal/journald.c
@@ -183,7 +183,26 @@ finish:
return avail;
}
-static void fix_perms(JournalFile *f, uid_t uid) {
+static void server_read_file_gid(Server *s) {
+ const char *adm = "adm";
+ int r;
+
+ assert(s);
+
+ if (s->file_gid_valid)
+ return;
+
+ r = get_group_creds(&adm, &s->file_gid);
+ if (r < 0)
+ log_warning("Failed to resolve 'adm' group: %s", strerror(-r));
+
+ /* if we couldn't read the gid, then it will be 0, but that's
+ * fine and we shouldn't try to resolve the group again, so
+ * let's just pretend it worked right-away. */
+ s->file_gid_valid = true;
+}
+
+static void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
int r;
#ifdef HAVE_ACL
acl_t acl;
@@ -193,7 +212,9 @@ static void fix_perms(JournalFile *f, uid_t uid) {
assert(f);
- r = fchmod_and_fchown(f->fd, 0640, 0, 0);
+ server_read_file_gid(s);
+
+ r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
if (r < 0)
log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
@@ -277,7 +298,7 @@ static JournalFile* find_journal(Server *s, uid_t uid) {
if (r < 0)
return s->system_journal;
- fix_perms(f, uid);
+ server_fix_perms(s, f, uid);
f->metrics = s->system_metrics;
f->compress = s->compress;
@@ -1733,7 +1754,7 @@ static int system_journal_open(Server *s) {
s->system_journal->metrics = s->system_metrics;
s->system_journal->compress = s->compress;
- fix_perms(s->system_journal, 0);
+ server_fix_perms(s, s->system_journal, 0);
} else if (r < 0) {
if (r != -ENOENT && r != -EROFS)
@@ -1786,7 +1807,7 @@ static int system_journal_open(Server *s) {
s->runtime_journal->metrics = s->runtime_metrics;
s->runtime_journal->compress = s->compress;
- fix_perms(s->runtime_journal, 0);
+ server_fix_perms(s, s->runtime_journal, 0);
}
}
diff --git a/src/journal/journald.h b/src/journal/journald.h
index 1f1665bfdb..6160991ed8 100644
--- a/src/journal/journald.h
+++ b/src/journal/journald.h
@@ -73,6 +73,9 @@ typedef struct Server {
uint64_t var_available_timestamp;
+ gid_t file_gid;
+ bool file_gid_valid;
+
LIST_HEAD(StdoutStream, stdout_streams);
unsigned n_stdout_streams;
} Server;