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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2012-10-13 11:31:54 +0200
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2012-10-13 14:40:32 +0200
commite88baee88fad8bc59d33b55a7a2d640ef9e16cd6 (patch)
treea5d0abc0097b7c7d8f04ff55f5bb1458147ca77c /src
parent1b4bb4fdac4dce4e658aa3743153d77c04d1a331 (diff)
journald: properly update message size after stripping the identifier
Valgrind says: ==29176== Conditional jump or move depends on uninitialised value(s) ==29176== at 0x412A85: cunescape_length_with_prefix (util.c:1565) ==29176== by 0x40B351: dev_kmsg_record (journald-kmsg.c:301) ==29176== by 0x40B653: server_read_dev_kmsg (journald-kmsg.c:347) ==29176== by 0x40B701: server_flush_dev_kmsg (journald-kmsg.c:365) ==29176== by 0x409DE7: main (journald.c:1535)
Diffstat (limited to 'src')
-rw-r--r--src/journal/journald-kmsg.c2
-rw-r--r--src/journal/journald-syslog.c7
-rw-r--r--src/journal/journald-syslog.h2
-rw-r--r--src/journal/test-journal-syslog.c44
4 files changed, 50 insertions, 5 deletions
diff --git a/src/journal/journald-kmsg.c b/src/journal/journald-kmsg.c
index 4f5e7a0c52..548f65311c 100644
--- a/src/journal/journald-kmsg.c
+++ b/src/journal/journald-kmsg.c
@@ -275,7 +275,7 @@ static void dev_kmsg_record(Server *s, char *p, size_t l) {
if ((priority & LOG_FACMASK) == LOG_KERN)
IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
else {
- syslog_parse_identifier((const char**) &p, &identifier, &pid);
+ pl -= syslog_parse_identifier((const char**) &p, &identifier, &pid);
/* Avoid any messages we generated ourselves via
* log_info() and friends. */
diff --git a/src/journal/journald-syslog.c b/src/journal/journald-syslog.c
index d3e0f6f6c1..c4f81b68f2 100644
--- a/src/journal/journald-syslog.c
+++ b/src/journal/journald-syslog.c
@@ -185,7 +185,7 @@ int syslog_fixup_facility(int priority) {
return priority;
}
-void syslog_parse_identifier(const char **buf, char **identifier, char **pid) {
+size_t syslog_parse_identifier(const char **buf, char **identifier, char **pid) {
const char *p;
char *t;
size_t l, e;
@@ -201,7 +201,7 @@ void syslog_parse_identifier(const char **buf, char **identifier, char **pid) {
if (l <= 0 ||
p[l-1] != ':')
- return;
+ return 0;
e = l;
l--;
@@ -231,8 +231,9 @@ void syslog_parse_identifier(const char **buf, char **identifier, char **pid) {
if (t)
*identifier = t;
+ e += strspn(p + e, WHITESPACE);
*buf = p + e;
- *buf += strspn(*buf, WHITESPACE);
+ return e;
}
void syslog_parse_priority(char **p, int *priority) {
diff --git a/src/journal/journald-syslog.h b/src/journal/journald-syslog.h
index e009ab7e72..fa9de1a951 100644
--- a/src/journal/journald-syslog.h
+++ b/src/journal/journald-syslog.h
@@ -26,7 +26,7 @@
int syslog_fixup_facility(int priority);
void syslog_parse_priority(char **p, int *priority);
-void syslog_parse_identifier(const char **buf, char **identifier, char **pid);
+size_t syslog_parse_identifier(const char **buf, char **identifier, char **pid);
void server_forward_syslog(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred, struct timeval *tv);
diff --git a/src/journal/test-journal-syslog.c b/src/journal/test-journal-syslog.c
new file mode 100644
index 0000000000..3ae8633f22
--- /dev/null
+++ b/src/journal/test-journal-syslog.c
@@ -0,0 +1,44 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 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 "journald-syslog.h"
+#include "macro.h"
+
+static void test_syslog_parse_identifier(const char* str,
+ const char *ident, const char*pid, int ret) {
+ const char *buf = str;
+ char *ident2 = NULL, *pid2 = NULL;
+ int ret2;
+
+ ret2 = syslog_parse_identifier(&buf, &ident2, &pid2);
+
+ assert(ret == ret2);
+ assert(ident==ident2 || !strcmp(ident, ident2));
+ assert(pid==pid2 || !strcmp(pid, pid2));
+}
+
+int main(void) {
+ test_syslog_parse_identifier("pidu[111]: xxx", "pidu", "111", 11);
+ test_syslog_parse_identifier("pidu: xxx", "pidu", NULL, 6);
+ test_syslog_parse_identifier("pidu xxx", NULL, NULL, 0);
+
+ return 0;
+}