-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <unistd.h>
#include <stddef.h>
#include <sys/epoll.h>
+#include <unistd.h>
-#include "systemd/sd-messages.h"
-#include "socket-util.h"
-#include "selinux-util.h"
+#include "sd-messages.h"
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "format-util.h"
+#include "io-util.h"
+#include "journald-console.h"
+#include "journald-kmsg.h"
#include "journald-server.h"
#include "journald-syslog.h"
-#include "journald-kmsg.h"
-#include "journald-console.h"
#include "journald-wall.h"
+#include "process-util.h"
+#include "selinux-util.h"
+#include "socket-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "syslog-util.h"
/* Warn once every 30s if we missed syslog message */
#define WARN_FORWARD_SYSLOG_MISSED_USEC (30 * USEC_PER_SEC)
.msg_iov = (struct iovec *) iovec,
.msg_iovlen = n_iovec,
.msg_name = (struct sockaddr*) &sa.sa,
- .msg_namelen = offsetof(union sockaddr_union, un.sun_path)
- + strlen("/run/systemd/journal/syslog"),
+ .msg_namelen = SOCKADDR_UN_LEN(sa.un),
};
struct cmsghdr *cmsg;
union {
return;
}
- if (ucred && errno == ESRCH) {
+ if (ucred && (errno == ESRCH || errno == EPERM)) {
struct ucred u;
/* Hmm, presumably the sender process vanished
- * by now, so let's fix it as good as we
- * can, and retry */
+ * by now, or we don't have CAP_SYS_AMDIN, so
+ * let's fix it as good as we can, and retry */
u = *ucred;
u.pid = getpid();
}
if (errno != ENOENT)
- log_debug("Failed to forward syslog message: %m");
+ log_debug_errno(errno, "Failed to forward syslog message: %m");
}
static void forward_syslog_raw(Server *s, int priority, const char *buffer, const struct ucred *ucred, const struct timeval *tv) {
void server_forward_syslog(Server *s, int priority, const char *identifier, const char *message, const struct ucred *ucred, const struct timeval *tv) {
struct iovec iovec[5];
- char header_priority[6], header_time[64], header_pid[16];
+ char header_priority[DECIMAL_STR_MAX(priority) + 3], header_time[64],
+ header_pid[sizeof("[]: ")-1 + DECIMAL_STR_MAX(pid_t) + 1];
int n = 0;
time_t t;
struct tm *tm;
return;
/* First: priority field */
- snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
- char_array_0(header_priority);
+ xsprintf(header_priority, "<%i>", priority);
IOVEC_SET_STRING(iovec[n++], header_priority);
/* Second: timestamp */
identifier = ident_buf;
}
- snprintf(header_pid, sizeof(header_pid), "["PID_FMT"]: ", ucred->pid);
- char_array_0(header_pid);
+ xsprintf(header_pid, "["PID_FMT"]: ", ucred->pid);
if (identifier)
IOVEC_SET_STRING(iovec[n++], identifier);
if (t)
*identifier = t;
- e += strspn(p + e, WHITESPACE);
+ if (strchr(WHITESPACE, p[e]))
+ e++;
*buf = p + e;
return e;
}
-void syslog_parse_priority(const char **p, int *priority, bool with_facility) {
- int a = 0, b = 0, c = 0;
- int k;
-
- assert(p);
- assert(*p);
- assert(priority);
-
- if ((*p)[0] != '<')
- return;
-
- if (!strchr(*p, '>'))
- return;
-
- if ((*p)[2] == '>') {
- c = undecchar((*p)[1]);
- k = 3;
- } else if ((*p)[3] == '>') {
- b = undecchar((*p)[1]);
- c = undecchar((*p)[2]);
- k = 4;
- } else if ((*p)[4] == '>') {
- a = undecchar((*p)[1]);
- b = undecchar((*p)[2]);
- c = undecchar((*p)[3]);
- k = 5;
- } else
- return;
-
- if (a < 0 || b < 0 || c < 0 ||
- (!with_facility && (a || b || c > 7)))
- return;
-
- if (with_facility)
- *priority = a*100 + b*10 + c;
- else
- *priority = (*priority & LOG_FACMASK) | c;
- *p += k;
-}
-
static void syslog_skip_date(char **buf) {
enum {
LETTER,
}
void server_process_syslog_message(
- Server *s,
- const char *buf,
- const struct ucred *ucred,
- const struct timeval *tv,
- const char *label,
- size_t label_len) {
-
- char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
+ Server *s,
+ const char *buf,
+ const struct ucred *ucred,
+ const struct timeval *tv,
+ const char *label,
+ size_t label_len) {
+
+ char syslog_priority[sizeof("PRIORITY=") + DECIMAL_STR_MAX(int)],
+ syslog_facility[sizeof("SYSLOG_FACILITY=") + DECIMAL_STR_MAX(int)];
+ const char *message = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
struct iovec iovec[N_IOVEC_META_FIELDS + 6];
unsigned n = 0;
int priority = LOG_USER | LOG_INFO;
- char *identifier = NULL, *pid = NULL;
+ _cleanup_free_ char *identifier = NULL, *pid = NULL;
const char *orig;
assert(s);
IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
+ xsprintf(syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK);
+ IOVEC_SET_STRING(iovec[n++], syslog_priority);
- if (priority & LOG_FACMASK)
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
+ if (priority & LOG_FACMASK) {
+ xsprintf(syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority));
+ IOVEC_SET_STRING(iovec[n++], syslog_facility);
+ }
if (identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
+ syslog_identifier = strjoina("SYSLOG_IDENTIFIER=", identifier);
+ IOVEC_SET_STRING(iovec[n++], syslog_identifier);
}
if (pid) {
- syslog_pid = strappend("SYSLOG_PID=", pid);
- if (syslog_pid)
- IOVEC_SET_STRING(iovec[n++], syslog_pid);
+ syslog_pid = strjoina("SYSLOG_PID=", pid);
+ IOVEC_SET_STRING(iovec[n++], syslog_pid);
}
- message = strappend("MESSAGE=", buf);
+ message = strjoina("MESSAGE=", buf);
if (message)
IOVEC_SET_STRING(iovec[n++], message);
server_dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, NULL, priority, 0);
-
- free(message);
- free(identifier);
- free(pid);
- free(syslog_priority);
- free(syslog_facility);
- free(syslog_identifier);
- free(syslog_pid);
}
int server_open_syslog_socket(Server *s) {
+
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/journal/dev-log",
+ };
static const int one = 1;
int r;
assert(s);
if (s->syslog_fd < 0) {
- static const union sockaddr_union sa = {
- .un.sun_family = AF_UNIX,
- .un.sun_path = "/run/systemd/journal/dev-log",
- };
-
s->syslog_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
- if (s->syslog_fd < 0) {
- log_error("socket() failed: %m");
- return -errno;
- }
+ if (s->syslog_fd < 0)
+ return log_error_errno(errno, "socket() failed: %m");
- unlink(sa.un.sun_path);
+ (void) unlink(sa.un.sun_path);
- r = bind(s->syslog_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
- if (r < 0) {
- log_error("bind(%s) failed: %m", sa.un.sun_path);
- return -errno;
- }
+ r = bind(s->syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
+ if (r < 0)
+ return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
- chmod(sa.un.sun_path, 0666);
+ (void) chmod(sa.un.sun_path, 0666);
} else
fd_nonblock(s->syslog_fd, 1);
r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_PASSCRED failed: %m");
- return -errno;
- }
+ if (r < 0)
+ return log_error_errno(errno, "SO_PASSCRED failed: %m");
#ifdef HAVE_SELINUX
- if (mac_selinux_use()) {
+ if (mac_selinux_have()) {
r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
if (r < 0)
- log_warning("SO_PASSSEC failed: %m");
+ log_warning_errno(errno, "SO_PASSSEC failed: %m");
}
#endif
r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_TIMESTAMP failed: %m");
- return -errno;
- }
+ if (r < 0)
+ return log_error_errno(errno, "SO_TIMESTAMP failed: %m");
- r = sd_event_add_io(s->event, &s->syslog_event_source, s->syslog_fd, EPOLLIN, process_datagram, s);
- if (r < 0) {
- log_error("Failed to add syslog server fd to event loop: %s", strerror(-r));
- return r;
- }
+ r = sd_event_add_io(s->event, &s->syslog_event_source, s->syslog_fd, EPOLLIN, server_process_datagram, s);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add syslog server fd to event loop: %m");
+
+ r = sd_event_source_set_priority(s->syslog_event_source, SD_EVENT_PRIORITY_NORMAL+5);
+ if (r < 0)
+ return log_error_errno(r, "Failed to adjust syslog event source priority: %m");
return 0;
}
void server_maybe_warn_forward_syslog_missed(Server *s) {
usec_t n;
+
assert(s);
if (s->n_forward_syslog_missed <= 0)
if (s->last_warn_forward_syslog_missed + WARN_FORWARD_SYSLOG_MISSED_USEC > n)
return;
- server_driver_message(s, SD_MESSAGE_FORWARD_SYSLOG_MISSED, "Forwarding to syslog missed %u messages.", s->n_forward_syslog_missed);
+ server_driver_message(s,
+ "MESSAGE_ID=" SD_MESSAGE_FORWARD_SYSLOG_MISSED_STR,
+ LOG_MESSAGE("Forwarding to syslog missed %u messages.",
+ s->n_forward_syslog_missed),
+ NULL);
s->n_forward_syslog_missed = 0;
s->last_warn_forward_syslog_missed = n;
projects / thirdparty / systemd.git / blobdiff