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-rw-r--r--src/journal/journal-send.c238
-rw-r--r--src/journal/libsystemd-journal.sym8
-rw-r--r--src/journal/test-journal-send.c32
3 files changed, 250 insertions, 28 deletions
diff --git a/src/journal/journal-send.c b/src/journal/journal-send.c
index b5b4fbfa0d..32e94af91f 100644
--- a/src/journal/journal-send.c
+++ b/src/journal/journal-send.c
@@ -26,6 +26,8 @@
#include <unistd.h>
#include <fcntl.h>
+#define SD_JOURNAL_SUPPRESS_LOCATION
+
#include "sd-journal.h"
#include "util.h"
#include "socket-util.h"
@@ -94,12 +96,26 @@ _public_ int sd_journal_printv(int priority, const char *format, va_list ap) {
return sd_journal_sendv(iov, 2);
}
-_public_ int sd_journal_send(const char *format, ...) {
- int r, n = 0, i = 0, j;
- va_list ap;
+static int fill_iovec_sprintf(const char *format, va_list ap, int extra, struct iovec **_iov) {
+ int r, n = 0, i, j;
struct iovec *iov = NULL;
+ int saved_errno;
+
+ assert(_iov);
+ saved_errno = errno;
+
+ if (extra > 0) {
+ n = MAX(extra * 2, extra + 4);
+ iov = malloc0(n * sizeof(struct iovec));
+ if (!iov) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ i = extra;
+ } else
+ i = 0;
- va_start(ap, format);
while (format) {
struct iovec *c;
char *buffer;
@@ -124,11 +140,39 @@ _public_ int sd_journal_send(const char *format, ...) {
format = va_arg(ap, char *);
}
+
+ *_iov = iov;
+
+ errno = saved_errno;
+ return i;
+
+fail:
+ for (j = 0; j < i; j++)
+ free(iov[j].iov_base);
+
+ free(iov);
+
+ errno = saved_errno;
+ return r;
+}
+
+_public_ int sd_journal_send(const char *format, ...) {
+ int r, i, j;
+ va_list ap;
+ struct iovec *iov = NULL;
+
+ va_start(ap, format);
+ i = fill_iovec_sprintf(format, ap, 0, &iov);
va_end(ap);
+ if (_unlikely_(i < 0)) {
+ r = i;
+ goto finish;
+ }
+
r = sd_journal_sendv(iov, i);
-fail:
+finish:
for (j = 0; j < i; j++)
free(iov[j].iov_base);
@@ -141,10 +185,11 @@ _public_ int sd_journal_sendv(const struct iovec *iov, int n) {
int fd, buffer_fd;
struct iovec *w;
uint64_t *l;
- int i, j = 0;
+ int r, i, j = 0;
struct msghdr mh;
struct sockaddr_un sa;
ssize_t k;
+ int saved_errno;
union {
struct cmsghdr cmsghdr;
uint8_t buf[CMSG_SPACE(sizeof(int))];
@@ -155,27 +200,37 @@ _public_ int sd_journal_sendv(const struct iovec *iov, int n) {
* and where unprivileged users can create files. */
char path[] = "/dev/shm/journal.XXXXXX";
- if (!iov || n <= 0)
+ if (_unlikely_(!iov))
+ return -EINVAL;
+
+ if (_unlikely_(n <= 0))
return -EINVAL;
+ saved_errno = errno;
+
w = alloca(sizeof(struct iovec) * n * 5);
l = alloca(sizeof(uint64_t) * n);
for (i = 0; i < n; i++) {
char *c, *nl;
- if (!iov[i].iov_base ||
- iov[i].iov_len <= 1)
- return -EINVAL;
+ if (_unlikely_(!iov[i].iov_base || iov[i].iov_len <= 1)) {
+ r = -EINVAL;
+ goto finish;
+ }
c = memchr(iov[i].iov_base, '=', iov[i].iov_len);
- if (!c || c == iov[i].iov_base)
- return -EINVAL;
+ if (_unlikely_(!c || c == iov[i].iov_base)) {
+ r = -EINVAL;
+ goto finish;
+ }
nl = memchr(iov[i].iov_base, '\n', iov[i].iov_len);
if (nl) {
- if (nl < c)
- return -EINVAL;
+ if (_unlikely_(nl < c)) {
+ r = -EINVAL;
+ goto finish;
+ }
/* Already includes a newline? Bummer, then
* let's write the variable name, then a
@@ -206,8 +261,10 @@ _public_ int sd_journal_sendv(const struct iovec *iov, int n) {
}
fd = journal_fd();
- if (fd < 0)
- return fd;
+ if (_unlikely_(fd < 0)) {
+ r = fd;
+ goto finish;
+ }
zero(sa);
sa.sun_family = AF_UNIX;
@@ -220,29 +277,37 @@ _public_ int sd_journal_sendv(const struct iovec *iov, int n) {
mh.msg_iovlen = j;
k = sendmsg(fd, &mh, MSG_NOSIGNAL);
- if (k >= 0)
- return 0;
+ if (k >= 0) {
+ r = 0;
+ goto finish;
+ }
- if (errno != EMSGSIZE && errno != ENOBUFS)
- return -errno;
+ if (errno != EMSGSIZE && errno != ENOBUFS) {
+ r = -errno;
+ goto finish;
+ }
/* Message doesn't fit... Let's dump the data in a temporary
* file and just pass a file descriptor of it to the other
* side */
buffer_fd = mkostemp(path, O_CLOEXEC|O_RDWR);
- if (buffer_fd < 0)
- return -errno;
+ if (buffer_fd < 0) {
+ r = -errno;
+ goto finish;
+ }
if (unlink(path) < 0) {
close_nointr_nofail(buffer_fd);
- return -errno;
+ r = -errno;
+ goto finish;
}
n = writev(buffer_fd, w, j);
- if (n < 0) {
+ if (n < 0) {
close_nointr_nofail(buffer_fd);
- return -errno;
+ r = -errno;
+ goto finish;
}
mh.msg_iov = NULL;
@@ -263,10 +328,17 @@ _public_ int sd_journal_sendv(const struct iovec *iov, int n) {
k = sendmsg(fd, &mh, MSG_NOSIGNAL);
close_nointr_nofail(buffer_fd);
- if (k < 0)
- return -errno;
+ if (k < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ errno = saved_errno;
- return 0;
+ return r;
}
_public_ int sd_journal_stream_fd(const char *identifier, int priority, int level_prefix) {
@@ -332,3 +404,113 @@ _public_ int sd_journal_stream_fd(const char *identifier, int priority, int leve
return fd;
}
+
+_public_ int sd_journal_print_with_location(int priority, const char *file, const char *line, const char *func, const char *format, ...) {
+ int r;
+ va_list ap;
+
+ va_start(ap, format);
+ r = sd_journal_printv_with_location(priority, file, line, func, format, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_public_ int sd_journal_printv_with_location(int priority, const char *file, const char *line, const char *func, const char *format, va_list ap) {
+ char buffer[8 + LINE_MAX], p[11];
+ struct iovec iov[5];
+ char *f;
+ size_t fl;
+
+ if (priority < 0 || priority > 7)
+ return -EINVAL;
+
+ if (_unlikely_(!format))
+ return -EINVAL;
+
+ snprintf(p, sizeof(p), "PRIORITY=%i", priority & LOG_PRIMASK);
+ char_array_0(p);
+
+ memcpy(buffer, "MESSAGE=", 8);
+ vsnprintf(buffer+8, sizeof(buffer) - 8, format, ap);
+ char_array_0(buffer);
+
+ /* func is initialized from __func__ which is not a macro, but
+ * a static const char[], hence cannot easily be prefixed with
+ * CODE_FUNC=, hence let's do it manually here. */
+ fl = strlen(func);
+ f = alloca(fl + 10);
+ memcpy(f, "CODE_FUNC=", 10);
+ memcpy(f + 10, func, fl + 1);
+
+ zero(iov);
+ IOVEC_SET_STRING(iov[0], buffer);
+ IOVEC_SET_STRING(iov[1], p);
+ IOVEC_SET_STRING(iov[2], file);
+ IOVEC_SET_STRING(iov[3], line);
+ IOVEC_SET_STRING(iov[4], f);
+
+ return sd_journal_sendv(iov, ELEMENTSOF(iov));
+}
+
+_public_ int sd_journal_send_with_location(const char *file, const char *line, const char *func, const char *format, ...) {
+ int r, i, j;
+ va_list ap;
+ struct iovec *iov = NULL;
+ char *f;
+ size_t fl;
+
+ va_start(ap, format);
+ i = fill_iovec_sprintf(format, ap, 3, &iov);
+ va_end(ap);
+
+ if (_unlikely_(i < 0)) {
+ r = i;
+ goto finish;
+ }
+
+ fl = strlen(func);
+ f = alloca(fl + 10);
+ memcpy(f, "CODE_FUNC=", 10);
+ memcpy(f + 10, func, fl + 1);
+
+ IOVEC_SET_STRING(iov[0], file);
+ IOVEC_SET_STRING(iov[1], line);
+ IOVEC_SET_STRING(iov[2], f);
+
+ r = sd_journal_sendv(iov, i);
+
+finish:
+ for (j = 3; j < i; j++)
+ free(iov[j].iov_base);
+
+ free(iov);
+
+ return r;
+}
+
+_public_ int sd_journal_sendv_with_location(const char *file, const char *line, const char *func, const struct iovec *iov, int n) {
+ struct iovec *niov;
+ char *f;
+ size_t fl;
+
+ if (_unlikely_(!iov))
+ return -EINVAL;
+
+ if (_unlikely_(n <= 0))
+ return -EINVAL;
+
+ niov = alloca(sizeof(struct iovec) * (n + 3));
+ memcpy(niov, iov, sizeof(struct iovec) * n);
+
+ fl = strlen(func);
+ f = alloca(fl + 10);
+ memcpy(f, "CODE_FUNC=", 10);
+ memcpy(f + 10, func, fl + 1);
+
+ IOVEC_SET_STRING(niov[n++], file);
+ IOVEC_SET_STRING(niov[n++], line);
+ IOVEC_SET_STRING(niov[n++], f);
+
+ return sd_journal_sendv(niov, n);
+}
diff --git a/src/journal/libsystemd-journal.sym b/src/journal/libsystemd-journal.sym
index 7653880e8f..cd434aea26 100644
--- a/src/journal/libsystemd-journal.sym
+++ b/src/journal/libsystemd-journal.sym
@@ -43,3 +43,11 @@ global:
local:
*;
};
+
+LIBSYSTEMD_JOURNAL_45 {
+global:
+ sd_journal_print_with_location;
+ sd_journal_printv_with_location;
+ sd_journal_send_with_location;
+ sd_journal_sendv_with_location;
+} LIBSYSTEMD_JOURNAL_38;
diff --git a/src/journal/test-journal-send.c b/src/journal/test-journal-send.c
new file mode 100644
index 0000000000..2f9987dcde
--- /dev/null
+++ b/src/journal/test-journal-send.c
@@ -0,0 +1,32 @@
+/*-*- 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 General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <systemd/sd-journal.h>
+
+int main(int argc, char *argv[]) {
+ sd_journal_print(LOG_INFO, "piepapo");
+
+ sd_journal_send("MESSAGE=foobar",
+ "VALUE=%i", 7,
+ NULL);
+
+ return 0;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-26 04:55:39 +0000