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-rw-r--r--src/basic/log.c89
-rw-r--r--src/basic/log.h10
2 files changed, 63 insertions, 36 deletions
diff --git a/src/basic/log.c b/src/basic/log.c
index a2bc0d5be2..18d4b82be2 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -805,6 +805,52 @@ int log_oom_internal(const char *file, int line, const char *func) {
return -ENOMEM;
}
+int log_format_iovec(
+ struct iovec *iovec,
+ unsigned iovec_len,
+ unsigned *n,
+ bool newline_separator,
+ int error,
+ const char *format,
+ va_list ap) {
+
+ static const char nl = '\n';
+
+ while (format && *n + 1 < iovec_len) {
+ va_list aq;
+ char *m;
+ int r;
+
+ /* We need to copy the va_list structure,
+ * since vasprintf() leaves it afterwards at
+ * an undefined location */
+
+ if (error != 0)
+ errno = error;
+
+ va_copy(aq, ap);
+ r = vasprintf(&m, format, aq);
+ va_end(aq);
+ if (r < 0)
+ return -EINVAL;
+
+ /* Now, jump enough ahead, so that we point to
+ * the next format string */
+ VA_FORMAT_ADVANCE(format, ap);
+
+ IOVEC_SET_STRING(iovec[(*n)++], m);
+
+ if (newline_separator) {
+ iovec[*n].iov_base = (char*) &nl;
+ iovec[*n].iov_len = 1;
+ (*n)++;
+ }
+
+ format = va_arg(ap, char *);
+ }
+ return 0;
+}
+
int log_struct_internal(
int level,
int error,
@@ -837,10 +883,10 @@ int log_struct_internal(
char header[LINE_MAX];
struct iovec iovec[17] = {};
unsigned n = 0, i;
+ int r;
struct msghdr mh = {
.msg_iov = iovec,
};
- static const char nl = '\n';
bool fallback = false;
/* If the journal is available do structured logging */
@@ -848,43 +894,14 @@ int log_struct_internal(
IOVEC_SET_STRING(iovec[n++], header);
va_start(ap, format);
- while (format && n + 1 < ELEMENTSOF(iovec)) {
- va_list aq;
- char *m;
-
- /* We need to copy the va_list structure,
- * since vasprintf() leaves it afterwards at
- * an undefined location */
-
- if (error != 0)
- errno = error;
-
- va_copy(aq, ap);
- if (vasprintf(&m, format, aq) < 0) {
- va_end(aq);
- fallback = true;
- goto finish;
- }
- va_end(aq);
-
- /* Now, jump enough ahead, so that we point to
- * the next format string */
- VA_FORMAT_ADVANCE(format, ap);
-
- IOVEC_SET_STRING(iovec[n++], m);
-
- iovec[n].iov_base = (char*) &nl;
- iovec[n].iov_len = 1;
- n++;
-
- format = va_arg(ap, char *);
+ r = log_format_iovec(iovec, ELEMENTSOF(iovec), &n, true, error, format, ap);
+ if (r < 0)
+ fallback = true;
+ else {
+ mh.msg_iovlen = n;
+ (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL);
}
- mh.msg_iovlen = n;
-
- (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL);
-
- finish:
va_end(ap);
for (i = 1; i < n; i += 2)
free(iovec[i].iov_base);
diff --git a/src/basic/log.h b/src/basic/log.h
index cda1e45cc8..8c7c5e4598 100644
--- a/src/basic/log.h
+++ b/src/basic/log.h
@@ -26,6 +26,7 @@
#include <stdbool.h>
#include <stdlib.h>
#include <sys/signalfd.h>
+#include <sys/socket.h>
#include <syslog.h>
#include "sd-id128.h"
@@ -127,6 +128,15 @@ int log_oom_internal(
int line,
const char *func);
+int log_format_iovec(
+ struct iovec *iovec,
+ unsigned iovec_len,
+ unsigned *n,
+ bool newline_separator,
+ int error,
+ const char *format,
+ va_list ap);
+
/* This modifies the buffer passed! */
int log_dump_internal(
int level,