#include "log.h"
#include "util.h"
+#include "missing.h"
#include "macro.h"
#include "socket-util.h"
return 0;
if (getpid() == 1) {
-
console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (console_fd < 0) {
- log_error("Failed to open /dev/console for logging: %s", strerror(-console_fd));
+ if (console_fd < 0)
return console_fd;
- }
-
- log_debug("Successfully opened /dev/console for logging.");
} else
console_fd = STDERR_FILENO;
return 0;
kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (kmsg_fd < 0) {
- log_error("Failed to open /dev/kmsg for logging: %s", strerror(errno));
+ if (kmsg_fd < 0)
return -errno;
- }
-
- log_debug("Successfully opened /dev/kmsg for logging.");
return 0;
}
} else
syslog_is_stream = false;
- log_debug("Successfully opened syslog for logging.");
-
return 0;
fail:
log_close_syslog();
- log_debug("Failed to open syslog for logging: %s", strerror(-r));
return r;
}
goto fail;
}
- log_debug("Successfully opened journal for logging.");
-
return 0;
fail:
log_close_journal();
- log_debug("Failed to open journal for logging: %s", strerror(-r));
return r;
}
log_assert(text, file, line, func, "Code should not be reached '%s' at %s:%u, function %s(). Aborting.");
}
+int log_oom_internal(const char *file, int line, const char *func) {
+ log_meta(LOG_ERR, file, line, func, "Out of memory.");
+ return -ENOMEM;
+}
+
+int log_struct_internal(
+ int level,
+ const char *file,
+ int line,
+ const char *func,
+ const char *format, ...) {
+
+ int saved_errno;
+ va_list ap;
+ int r;
+
+ if (_likely_(LOG_PRI(level) > log_max_level))
+ return 0;
+
+ if (log_target == LOG_TARGET_NULL)
+ return 0;
+
+ if ((level & LOG_FACMASK) == 0)
+ level = log_facility | LOG_PRI(level);
+
+ saved_errno = errno;
+
+ if ((log_target == LOG_TARGET_AUTO ||
+ log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
+ log_target == LOG_TARGET_JOURNAL) &&
+ journal_fd >= 0) {
+
+ char header[LINE_MAX];
+ struct iovec iovec[17];
+ unsigned n = 0, i;
+ struct msghdr mh;
+ const char nl = '\n';
+
+ /* If the journal is available do structured logging */
+
+ snprintf(header, sizeof(header),
+ "PRIORITY=%i\n"
+ "SYSLOG_FACILITY=%i\n"
+ "CODE_FILE=%s\n"
+ "CODE_LINE=%i\n"
+ "CODE_FUNCTION=%s\n"
+ "SYSLOG_IDENTIFIER=%s\n",
+ LOG_PRI(level),
+ LOG_FAC(level),
+ file,
+ line,
+ func,
+ program_invocation_short_name);
+ char_array_0(header);
+
+ zero(iovec);
+ IOVEC_SET_STRING(iovec[n++], header);
+
+ va_start(ap, format);
+ while (format && n + 1 < ELEMENTSOF(iovec)) {
+ char *buf;
+
+ if (vasprintf(&buf, format, ap) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ IOVEC_SET_STRING(iovec[n++], buf);
+
+ iovec[n].iov_base = (char*) &nl;
+ iovec[n].iov_len = 1;
+ n++;
+
+ format = va_arg(ap, char *);
+ }
+ va_end(ap);
+
+ zero(mh);
+ mh.msg_iov = iovec;
+ mh.msg_iovlen = n;
+
+ if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0)
+ r = -errno;
+ else
+ r = 1;
+
+ finish:
+ for (i = 1; i < n; i += 2)
+ free(iovec[i].iov_base);
+
+ } else {
+ char buf[LINE_MAX];
+ bool found = false;
+
+ /* Fallback if journal logging is not available */
+
+ va_start(ap, format);
+ while (format) {
+
+ vsnprintf(buf, sizeof(buf), format, ap);
+ char_array_0(buf);
+
+ if (startswith(buf, "MESSAGE=")) {
+ found = true;
+ break;
+ }
+
+ format = va_arg(ap, char *);
+ }
+ va_end(ap);
+
+ if (found)
+ r = log_dispatch(level, file, line, func, buf + 8);
+ else
+ r = -EINVAL;
+ }
+
+ errno = saved_errno;
+ return r;
+}
+
int log_set_target_from_string(const char *e) {
LogTarget t;
void log_parse_environment(void) {
const char *e;
- if ((e = getenv("SYSTEMD_LOG_TARGET")))
- if (log_set_target_from_string(e) < 0)
- log_warning("Failed to parse log target %s. Ignoring.", e);
+ e = secure_getenv("SYSTEMD_LOG_TARGET");
+ if (e && log_set_target_from_string(e) < 0)
+ log_warning("Failed to parse log target %s. Ignoring.", e);
- if ((e = getenv("SYSTEMD_LOG_LEVEL")))
- if (log_set_max_level_from_string(e) < 0)
- log_warning("Failed to parse log level %s. Ignoring.", e);
+ e = secure_getenv("SYSTEMD_LOG_LEVEL");
+ if (e && log_set_max_level_from_string(e) < 0)
+ log_warning("Failed to parse log level %s. Ignoring.", e);
- if ((e = getenv("SYSTEMD_LOG_COLOR")))
- if (log_show_color_from_string(e) < 0)
- log_warning("Failed to parse bool %s. Ignoring.", e);
+ e = secure_getenv("SYSTEMD_LOG_COLOR");
+ if (e && log_show_color_from_string(e) < 0)
+ log_warning("Failed to parse bool %s. Ignoring.", e);
- if ((e = getenv("SYSTEMD_LOG_LOCATION")))
- if (log_show_location_from_string(e) < 0)
- log_warning("Failed to parse bool %s. Ignoring.", e);
+ e = secure_getenv("SYSTEMD_LOG_LOCATION");
+ if (e && log_show_location_from_string(e) < 0)
+ log_warning("Failed to parse bool %s. Ignoring.", e);
}
LogTarget log_get_target(void) {
return 0;
}
+bool log_on_console(void) {
+ if (log_target == LOG_TARGET_CONSOLE)
+ return true;
+
+ return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0;
+}
+
static const char *const log_target_table[] = {
[LOG_TARGET_CONSOLE] = "console",
[LOG_TARGET_KMSG] = "kmsg",