0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <fcntl.h>
|
|
#include <sys/socket.h>
|
|
#include <time.h>
|
|
|
|
#include "alloc-util.h"
|
|
#include "fd-util.h"
|
|
#include "fileio.h"
|
|
#include "format-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[STRLEN("[] ") + DECIMAL_STR_MAX(ts.tv_sec) + DECIMAL_STR_MAX(ts.tv_nsec)-3 + 1];
|
|
char header_pid[STRLEN("[]: ") + DECIMAL_STR_MAX(pid_t)];
|
|
_cleanup_free_ char *ident_buf = NULL;
|
|
_cleanup_close_ int fd = -1;
|
|
const char *tty;
|
|
int n = 0;
|
|
|
|
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".%06"PRI_NSEC"] ",
|
|
ts.tv_sec,
|
|
(nsec_t)ts.tv_nsec / 1000);
|
|
|
|
iovec[n++] = IOVEC_MAKE_STRING(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[n++] = IOVEC_MAKE_STRING(identifier);
|
|
|
|
iovec[n++] = IOVEC_MAKE_STRING(header_pid);
|
|
} else if (identifier) {
|
|
iovec[n++] = IOVEC_MAKE_STRING(identifier);
|
|
iovec[n++] = IOVEC_MAKE_STRING(": ");
|
|
}
|
|
|
|
/* Fourth: message */
|
|
iovec[n++] = IOVEC_MAKE_STRING(message);
|
|
iovec[n++] = IOVEC_MAKE_STRING("\n");
|
|
|
|
tty = s->tty_path ?: "/dev/console";
|
|
|
|
/* Before you ask: yes, on purpose we open/close the console for each log line we write individually. This is a
|
|
* good strategy to avoid journald getting killed by the kernel's SAK concept (it doesn't fix this entirely,
|
|
* but minimizes the time window the kernel might end up killing journald due to SAK). It also makes things
|
|
* easier for us so that we don't have to recover from hangups and suchlike triggered on the 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);
|
|
}
|