logind: log with AUTH facility

[elogind.git] / src / log.c

diff --git a/src/log.c b/src/log.c
index 79c63a18e715bd7d7e6c25c6af5fcb6c7c610041..9fffc1dbc00ba2123cae35afbf3d4eb0156865eb 100644 (file)
--- a/src/log.c
+++ b/src/log.c
@@ -33,10 +33,11 @@
 #include "macro.h"
 #include "socket-util.h"
 
-#define SOCKET_TIMEOUT_USEC (5*USEC_PER_SEC)
+#define SNDBUF_SIZE (8*1024*1024)
 
 static LogTarget log_target = LOG_TARGET_CONSOLE;
 static int log_max_level = LOG_INFO;
+static int log_facility = LOG_DAEMON;
 
 static int console_fd = STDERR_FILENO;
 static int syslog_fd = -1;
@@ -120,24 +121,16 @@ void log_close_syslog(void) {
 }
 
 static int create_log_socket(int type) {
-        struct timeval tv;
         int fd;
 
-        if (getpid() == 1)
-                /* systemd should not block on syslog */
-                type |= SOCK_NONBLOCK;
+        /* All output to the syslog/journal fds we do asynchronously,
+         * and if the buffers are full we just drop the messages */
 
-        fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0);
+        fd = socket(AF_UNIX, type|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
         if (fd < 0)
                 return -errno;
 
-        /* Make sure we don't block for more than 5s when talking to
-         * syslog */
-        timeval_store(&tv, SOCKET_TIMEOUT_USEC);
-        if (setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) < 0) {
-                close_nointr_nofail(fd);
-                return -errno;
-        }
+        fd_inc_sndbuf(fd, SNDBUF_SIZE);
 
         return fd;
 }
@@ -159,7 +152,7 @@ static int log_open_syslog(void) {
                 goto fail;
         }
 
-        if (connect(syslog_fd, &sa.sa, sizeof(sa)) < 0) {
+        if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
                 close_nointr_nofail(syslog_fd);
 
                 /* Some legacy syslog systems still use stream
@@ -171,7 +164,7 @@ static int log_open_syslog(void) {
                         goto fail;
                 }
 
-                if (connect(syslog_fd, &sa.sa, sizeof(sa)) < 0) {
+                if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
                         r = -errno;
                         goto fail;
                 }
@@ -318,6 +311,10 @@ void log_set_max_level(int level) {
         log_max_level = level;
 }
 
+void log_set_facility(int facility) {
+        log_facility = facility;
+}
+
 static int write_to_console(
                 int level,
                 const char*file,
@@ -465,11 +462,13 @@ static int write_to_journal(
 
         snprintf(header, sizeof(header),
                  "PRIORITY=%i\n"
+                 "SYSLOG_FACILITY=%i\n"
                  "CODE_FILE=%s\n"
                  "CODE_LINE=%i\n"
                  "CODE_FUNCTION=%s\n"
                  "MESSAGE=",
                  LOG_PRI(level),
+                 LOG_FAC(level),
                  file,
                  line,
                  func);
@@ -505,7 +504,7 @@ static int log_dispatch(
 
         /* Patch in LOG_DAEMON facility if necessary */
         if ((level & LOG_FACMASK) == 0)
-                level = LOG_DAEMON | LOG_PRI(level);
+                level = log_facility | LOG_PRI(level);
 
         do {
                 char *e;
@@ -590,26 +589,22 @@ int log_dump_internal(
         return r;
 }
 
-int log_meta(
+int log_metav(
         int level,
         const char*file,
         int line,
         const char *func,
-        const char *format, ...) {
+        const char *format,
+        va_list ap) {
 
         char buffer[LINE_MAX];
         int saved_errno, r;
-        va_list ap;
 
         if (_likely_(LOG_PRI(level) > log_max_level))
                 return 0;
 
         saved_errno = errno;
-
-        va_start(ap, format);
         vsnprintf(buffer, sizeof(buffer), format, ap);
-        va_end(ap);
-
         char_array_0(buffer);
 
         r = log_dispatch(level, file, line, func, buffer);
@@ -618,28 +613,44 @@ int log_meta(
         return r;
 }
 
-void log_assert(
+int log_meta(
+        int level,
         const char*file,
         int line,
         const char *func,
         const char *format, ...) {
 
-        static char buffer[LINE_MAX];
-        int saved_errno = errno;
+        int r;
         va_list ap;
 
         va_start(ap, format);
-        vsnprintf(buffer, sizeof(buffer), format, ap);
+        r = log_metav(level, file, line, func, format, ap);
         va_end(ap);
 
+        return r;
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+_noreturn_ static void log_assert(const char *text, const char *file, int line, const char *func, const char *format) {
+        static char buffer[LINE_MAX];
+
+        snprintf(buffer, sizeof(buffer), format, text, file, line, func);
+
         char_array_0(buffer);
         log_abort_msg = buffer;
 
         log_dispatch(LOG_CRIT, file, line, func, buffer);
         abort();
+}
+#pragma GCC diagnostic pop
 
-        /* If the user chose to ignore this SIGABRT, we are happy to go on, as if nothing happened. */
-        errno = saved_errno;
+_noreturn_ void log_assert_failed(const char *text, const char *file, int line, const char *func) {
+        log_assert(text, file, line, func, "Assertion '%s' failed at %s:%u, function %s(). Aborting.");
+}
+
+_noreturn_ void log_assert_failed_unreachable(const char *text, const char *file, int line, const char *func) {
+        log_assert(text, file, line, func, "Code should not be reached '%s' at %s:%u, function %s(). Aborting.");
 }
 
 int log_set_target_from_string(const char *e) {