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-rw-r--r--src/grp-journal/libjournal-core/journald-console.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/grp-journal/libjournal-core/journald-console.c b/src/grp-journal/libjournal-core/journald-console.c
new file mode 100644
index 0000000000..fcc9f25814
--- /dev/null
+++ b/src/grp-journal/libjournal-core/journald-console.c
@@ -0,0 +1,115 @@
+/***
+ 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 <fcntl.h>
+#include <sys/socket.h>
+#include <time.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "io-util.h"
+#include "journald-console.h"
+#include "journald-server.h"
+#include "parse-util.h"
+#include "process-util.h"
+#include "stdio-util.h"
+#include "terminal-util.h"
+
+static bool prefix_timestamp(void) {
+
+ static int cached_printk_time = -1;
+
+ if (_unlikely_(cached_printk_time < 0)) {
+ _cleanup_free_ char *p = NULL;
+
+ cached_printk_time =
+ read_one_line_file("/sys/module/printk/parameters/time", &p) >= 0
+ && parse_boolean(p) > 0;
+ }
+
+ return cached_printk_time;
+}
+
+void server_forward_console(
+ Server *s,
+ int priority,
+ const char *identifier,
+ const char *message,
+ const struct ucred *ucred) {
+
+ struct iovec iovec[5];
+ struct timespec ts;
+ char tbuf[sizeof("[] ")-1 + DECIMAL_STR_MAX(ts.tv_sec) + DECIMAL_STR_MAX(ts.tv_nsec)-3 + 1];
+ char header_pid[sizeof("[]: ")-1 + DECIMAL_STR_MAX(pid_t)];
+ int n = 0, fd;
+ _cleanup_free_ char *ident_buf = NULL;
+ const char *tty;
+
+ assert(s);
+ assert(message);
+
+ if (LOG_PRI(priority) > s->max_level_console)
+ return;
+
+ /* First: timestamp */
+ if (prefix_timestamp()) {
+ assert_se(clock_gettime(CLOCK_MONOTONIC, &ts) == 0);
+ xsprintf(tbuf, "[%5"PRI_TIME".%06ld] ",
+ ts.tv_sec,
+ ts.tv_nsec / 1000);
+ IOVEC_SET_STRING(iovec[n++], tbuf);
+ }
+
+ /* Second: identifier and PID */
+ if (ucred) {
+ if (!identifier) {
+ get_process_comm(ucred->pid, &ident_buf);
+ identifier = ident_buf;
+ }
+
+ xsprintf(header_pid, "["PID_FMT"]: ", ucred->pid);
+
+ if (identifier)
+ IOVEC_SET_STRING(iovec[n++], identifier);
+
+ IOVEC_SET_STRING(iovec[n++], header_pid);
+ } else if (identifier) {
+ IOVEC_SET_STRING(iovec[n++], identifier);
+ IOVEC_SET_STRING(iovec[n++], ": ");
+ }
+
+ /* Fourth: message */
+ IOVEC_SET_STRING(iovec[n++], message);
+ IOVEC_SET_STRING(iovec[n++], "\n");
+
+ tty = s->tty_path ? s->tty_path : "/dev/console";
+
+ fd = open_terminal(tty, O_WRONLY|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0) {
+ log_debug_errno(fd, "Failed to open %s for logging: %m", tty);
+ return;
+ }
+
+ if (writev(fd, iovec, n) < 0)
+ log_debug_errno(errno, "Failed to write to %s for logging: %m", tty);
+
+ safe_close(fd);
+}