+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 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 <stdarg.h>
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <stddef.h>
-#include <printf.h>
-
-#include "sd-messages.h"
-#include "log.h"
-#include "util.h"
-#include "missing.h"
-#include "macro.h"
-#include "socket-util.h"
-#include "formats-util.h"
-#include "process-util.h"
-#include "terminal-util.h"
-#include "signal-util.h"
-
-#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;
-static int kmsg_fd = -1;
-static int journal_fd = -1;
-
-static bool syslog_is_stream = false;
-
-static bool show_color = false;
-static bool show_location = false;
-
-static bool upgrade_syslog_to_journal = false;
-
-/* Akin to glibc's __abort_msg; which is private and we hence cannot
- * use here. */
-static char *log_abort_msg = NULL;
-
-void log_close_console(void) {
-
- if (console_fd < 0)
- return;
-
- if (getpid() == 1) {
- if (console_fd >= 3)
- safe_close(console_fd);
-
- console_fd = -1;
- }
-}
-
-static int log_open_console(void) {
-
- if (console_fd >= 0)
- return 0;
-
- if (getpid() == 1) {
- console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (console_fd < 0)
- return console_fd;
- } else
- console_fd = STDERR_FILENO;
-
- return 0;
-}
-
-void log_close_kmsg(void) {
- kmsg_fd = safe_close(kmsg_fd);
-}
-
-static int log_open_kmsg(void) {
-
- if (kmsg_fd >= 0)
- return 0;
-
- kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (kmsg_fd < 0)
- return -errno;
-
- return 0;
-}
-
-void log_close_syslog(void) {
- syslog_fd = safe_close(syslog_fd);
-}
-
-static int create_log_socket(int type) {
- struct timeval tv;
- int fd;
-
- fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0);
- if (fd < 0)
- return -errno;
-
- fd_inc_sndbuf(fd, SNDBUF_SIZE);
-
- /* We need a blocking fd here since we'd otherwise lose
- messages way too early. However, let's not hang forever in the
- unlikely case of a deadlock. */
- if (getpid() == 1)
- timeval_store(&tv, 10 * USEC_PER_MSEC);
- else
- timeval_store(&tv, 10 * USEC_PER_SEC);
- (void) setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
-
- return fd;
-}
-
-static int log_open_syslog(void) {
-
- static const union sockaddr_union sa = {
- .un.sun_family = AF_UNIX,
- .un.sun_path = "/dev/log",
- };
-
- int r;
-
- if (syslog_fd >= 0)
- return 0;
-
- syslog_fd = create_log_socket(SOCK_DGRAM);
- if (syslog_fd < 0) {
- r = syslog_fd;
- goto fail;
- }
-
- if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
- safe_close(syslog_fd);
-
- /* Some legacy syslog systems still use stream
- * sockets. They really shouldn't. But what can we
- * do... */
- syslog_fd = create_log_socket(SOCK_STREAM);
- if (syslog_fd < 0) {
- r = syslog_fd;
- goto fail;
- }
-
- if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
- r = -errno;
- goto fail;
- }
-
- syslog_is_stream = true;
- } else
- syslog_is_stream = false;
-
- return 0;
-
-fail:
- log_close_syslog();
- return r;
-}
-
-void log_close_journal(void) {
- journal_fd = safe_close(journal_fd);
-}
-
-static int log_open_journal(void) {
-
- static const union sockaddr_union sa = {
- .un.sun_family = AF_UNIX,
- .un.sun_path = "/run/systemd/journal/socket",
- };
-
- int r;
-
- if (journal_fd >= 0)
- return 0;
-
- journal_fd = create_log_socket(SOCK_DGRAM);
- if (journal_fd < 0) {
- r = journal_fd;
- goto fail;
- }
-
- if (connect(journal_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
- r = -errno;
- goto fail;
- }
-
- return 0;
-
-fail:
- log_close_journal();
- return r;
-}
-
-int log_open(void) {
- int r;
-
- /* If we don't use the console we close it here, to not get
- * killed by SAK. If we don't use syslog we close it here so
- * that we are not confused by somebody deleting the socket in
- * the fs. If we don't use /dev/kmsg we still keep it open,
- * because there is no reason to close it. */
-
- if (log_target == LOG_TARGET_NULL) {
- log_close_journal();
- log_close_syslog();
- log_close_console();
- return 0;
- }
-
- if ((log_target != LOG_TARGET_AUTO && log_target != LOG_TARGET_SAFE) ||
- getpid() == 1 ||
- isatty(STDERR_FILENO) <= 0) {
-
- if (log_target == LOG_TARGET_AUTO ||
- log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
- log_target == LOG_TARGET_JOURNAL) {
- r = log_open_journal();
- if (r >= 0) {
- log_close_syslog();
- log_close_console();
- return r;
- }
- }
-
- if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_SYSLOG) {
- r = log_open_syslog();
- if (r >= 0) {
- log_close_journal();
- log_close_console();
- return r;
- }
- }
-
- if (log_target == LOG_TARGET_AUTO ||
- log_target == LOG_TARGET_SAFE ||
- log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
- log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_KMSG) {
- r = log_open_kmsg();
- if (r >= 0) {
- log_close_journal();
- log_close_syslog();
- log_close_console();
- return r;
- }
- }
- }
-
- log_close_journal();
- log_close_syslog();
-
- return log_open_console();
-}
-
-void log_set_target(LogTarget target) {
- assert(target >= 0);
- assert(target < _LOG_TARGET_MAX);
-
- if (upgrade_syslog_to_journal) {
- if (target == LOG_TARGET_SYSLOG)
- target = LOG_TARGET_JOURNAL;
- else if (target == LOG_TARGET_SYSLOG_OR_KMSG)
- target = LOG_TARGET_JOURNAL_OR_KMSG;
- }
-
- log_target = target;
-}
-
-void log_close(void) {
- log_close_journal();
- log_close_syslog();
- log_close_kmsg();
- log_close_console();
-}
-
-void log_forget_fds(void) {
- console_fd = kmsg_fd = syslog_fd = journal_fd = -1;
-}
-
-void log_set_max_level(int level) {
- assert((level & LOG_PRIMASK) == level);
-
- log_max_level = level;
-}
-
-void log_set_facility(int facility) {
- log_facility = facility;
-}
-
-static int write_to_console(
- int level,
- int error,
- const char *file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *buffer) {
-
- char location[64], prefix[1 + DECIMAL_STR_MAX(int) + 2];
- struct iovec iovec[6] = {};
- unsigned n = 0;
- bool highlight;
-
- if (console_fd < 0)
- return 0;
-
- if (log_target == LOG_TARGET_CONSOLE_PREFIXED) {
- sprintf(prefix, "<%i>", level);
- IOVEC_SET_STRING(iovec[n++], prefix);
- }
-
- highlight = LOG_PRI(level) <= LOG_ERR && show_color;
-
- if (show_location) {
- snprintf(location, sizeof(location), "(%s:%i) ", file, line);
- IOVEC_SET_STRING(iovec[n++], location);
- }
-
- if (highlight)
- IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_RED_ON);
- IOVEC_SET_STRING(iovec[n++], buffer);
- if (highlight)
- IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_OFF);
- IOVEC_SET_STRING(iovec[n++], "\n");
-
- if (writev(console_fd, iovec, n) < 0) {
-
- if (errno == EIO && getpid() == 1) {
-
- /* If somebody tried to kick us from our
- * console tty (via vhangup() or suchlike),
- * try to reconnect */
-
- log_close_console();
- log_open_console();
-
- if (console_fd < 0)
- return 0;
-
- if (writev(console_fd, iovec, n) < 0)
- return -errno;
- } else
- return -errno;
- }
-
- return 1;
-}
-
-static int write_to_syslog(
- int level,
- int error,
- const char *file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *buffer) {
-
- char header_priority[2 + DECIMAL_STR_MAX(int) + 1],
- header_time[64],
- header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1];
- struct iovec iovec[5] = {};
- struct msghdr msghdr = {
- .msg_iov = iovec,
- .msg_iovlen = ELEMENTSOF(iovec),
- };
- time_t t;
- struct tm *tm;
-
- if (syslog_fd < 0)
- return 0;
-
- xsprintf(header_priority, "<%i>", level);
-
- t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC);
- tm = localtime(&t);
- if (!tm)
- return -EINVAL;
-
- if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0)
- return -EINVAL;
-
- xsprintf(header_pid, "["PID_FMT"]: ", getpid());
-
- IOVEC_SET_STRING(iovec[0], header_priority);
- IOVEC_SET_STRING(iovec[1], header_time);
- IOVEC_SET_STRING(iovec[2], program_invocation_short_name);
- IOVEC_SET_STRING(iovec[3], header_pid);
- IOVEC_SET_STRING(iovec[4], buffer);
-
- /* When using syslog via SOCK_STREAM separate the messages by NUL chars */
- if (syslog_is_stream)
- iovec[4].iov_len++;
-
- for (;;) {
- ssize_t n;
-
- n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL);
- if (n < 0)
- return -errno;
-
- if (!syslog_is_stream ||
- (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec)))
- break;
-
- IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n);
- }
-
- return 1;
-}
-
-static int write_to_kmsg(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *buffer) {
-
- char header_priority[2 + DECIMAL_STR_MAX(int) + 1],
- header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1];
- struct iovec iovec[5] = {};
-
- if (kmsg_fd < 0)
- return 0;
-
- xsprintf(header_priority, "<%i>", level);
- xsprintf(header_pid, "["PID_FMT"]: ", getpid());
-
- IOVEC_SET_STRING(iovec[0], header_priority);
- IOVEC_SET_STRING(iovec[1], program_invocation_short_name);
- IOVEC_SET_STRING(iovec[2], header_pid);
- IOVEC_SET_STRING(iovec[3], buffer);
- IOVEC_SET_STRING(iovec[4], "\n");
-
- if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0)
- return -errno;
-
- return 1;
-}
-
-static int log_do_header(
- char *header,
- size_t size,
- int level,
- int error,
- const char *file, int line, const char *func,
- const char *object_field, const char *object) {
-
- snprintf(header, size,
- "PRIORITY=%i\n"
- "SYSLOG_FACILITY=%i\n"
- "%s%s%s"
- "%s%.*i%s"
- "%s%s%s"
- "%s%.*i%s"
- "%s%s%s"
- "SYSLOG_IDENTIFIER=%s\n",
- LOG_PRI(level),
- LOG_FAC(level),
- isempty(file) ? "" : "CODE_FILE=",
- isempty(file) ? "" : file,
- isempty(file) ? "" : "\n",
- line ? "CODE_LINE=" : "",
- line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */
- line ? "\n" : "",
- isempty(func) ? "" : "CODE_FUNCTION=",
- isempty(func) ? "" : func,
- isempty(func) ? "" : "\n",
- error ? "ERRNO=" : "",
- error ? 1 : 0, error,
- error ? "\n" : "",
- isempty(object) ? "" : object_field,
- isempty(object) ? "" : object,
- isempty(object) ? "" : "\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int write_to_journal(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *buffer) {
-
- char header[LINE_MAX];
- struct iovec iovec[4] = {};
- struct msghdr mh = {};
-
- if (journal_fd < 0)
- return 0;
-
- log_do_header(header, sizeof(header), level, error, file, line, func, object_field, object);
-
- IOVEC_SET_STRING(iovec[0], header);
- IOVEC_SET_STRING(iovec[1], "MESSAGE=");
- IOVEC_SET_STRING(iovec[2], buffer);
- IOVEC_SET_STRING(iovec[3], "\n");
-
- mh.msg_iov = iovec;
- mh.msg_iovlen = ELEMENTSOF(iovec);
-
- if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0)
- return -errno;
-
- return 1;
-}
-
-static int log_dispatch(
- int level,
- int error,
- const char *file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- char *buffer) {
-
- assert(buffer);
-
- if (log_target == LOG_TARGET_NULL)
- return -error;
-
- /* Patch in LOG_DAEMON facility if necessary */
- if ((level & LOG_FACMASK) == 0)
- level = log_facility | LOG_PRI(level);
-
- if (error < 0)
- error = -error;
-
- do {
- char *e;
- int k = 0;
-
- buffer += strspn(buffer, NEWLINE);
-
- if (buffer[0] == 0)
- break;
-
- if ((e = strpbrk(buffer, NEWLINE)))
- *(e++) = 0;
-
- if (log_target == LOG_TARGET_AUTO ||
- log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
- log_target == LOG_TARGET_JOURNAL) {
-
- k = write_to_journal(level, error, file, line, func, object_field, object, buffer);
- if (k < 0) {
- if (k != -EAGAIN)
- log_close_journal();
- log_open_kmsg();
- }
- }
-
- if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_SYSLOG) {
-
- k = write_to_syslog(level, error, file, line, func, object_field, object, buffer);
- if (k < 0) {
- if (k != -EAGAIN)
- log_close_syslog();
- log_open_kmsg();
- }
- }
-
- if (k <= 0 &&
- (log_target == LOG_TARGET_AUTO ||
- log_target == LOG_TARGET_SAFE ||
- log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_JOURNAL_OR_KMSG ||
- log_target == LOG_TARGET_KMSG)) {
-
- k = write_to_kmsg(level, error, file, line, func, object_field, object, buffer);
- if (k < 0) {
- log_close_kmsg();
- log_open_console();
- }
- }
-
- if (k <= 0)
- (void) write_to_console(level, error, file, line, func, object_field, object, buffer);
-
- buffer = e;
- } while (buffer);
-
- return -error;
-}
-
-int log_dump_internal(
- int level,
- int error,
- const char *file,
- int line,
- const char *func,
- char *buffer) {
-
- PROTECT_ERRNO;
-
- /* This modifies the buffer... */
-
- if (error < 0)
- error = -error;
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return -error;
-
- return log_dispatch(level, error, file, line, func, NULL, NULL, buffer);
-}
-
-int log_internalv(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *format,
- va_list ap) {
-
- PROTECT_ERRNO;
- char buffer[LINE_MAX];
-
- if (error < 0)
- error = -error;
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return -error;
-
- /* Make sure that %m maps to the specified error */
- if (error != 0)
- errno = error;
-
- vsnprintf(buffer, sizeof(buffer), format, ap);
-
- return log_dispatch(level, error, file, line, func, NULL, NULL, buffer);
-}
-
-int log_internal(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *format, ...) {
-
- va_list ap;
- int r;
-
- va_start(ap, format);
- r = log_internalv(level, error, file, line, func, format, ap);
- va_end(ap);
-
- return r;
-}
-
-int log_object_internalv(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *format,
- va_list ap) {
-
- PROTECT_ERRNO;
- char *buffer, *b;
- size_t l;
-
- if (error < 0)
- error = -error;
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return -error;
-
- /* Make sure that %m maps to the specified error */
- if (error != 0)
- errno = error;
-
- /* Prepend the object name before the message */
- if (object) {
- size_t n;
-
- n = strlen(object);
- l = n + 2 + LINE_MAX;
-
- buffer = newa(char, l);
- b = stpcpy(stpcpy(buffer, object), ": ");
- } else {
- l = LINE_MAX;
- b = buffer = newa(char, l);
- }
-
- vsnprintf(b, l, format, ap);
-
- return log_dispatch(level, error, file, line, func, object_field, object, buffer);
-}
-
-int log_object_internal(
- int level,
- int error,
- const char*file,
- int line,
- const char *func,
- const char *object_field,
- const char *object,
- const char *format, ...) {
-
- va_list ap;
- int r;
-
- va_start(ap, format);
- r = log_object_internalv(level, error, file, line, func, object_field, object, format, ap);
- va_end(ap);
-
- return r;
-}
-
-static void log_assert(
- int level,
- const char *text,
- const char *file,
- int line,
- const char *func,
- const char *format) {
-
- static char buffer[LINE_MAX];
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return;
-
- DISABLE_WARNING_FORMAT_NONLITERAL;
- snprintf(buffer, sizeof(buffer), format, text, file, line, func);
- REENABLE_WARNING;
-
- log_abort_msg = buffer;
-
- log_dispatch(level, 0, file, line, func, NULL, NULL, buffer);
-}
-
-noreturn void log_assert_failed(const char *text, const char *file, int line, const char *func) {
- log_assert(LOG_CRIT, text, file, line, func, "Assertion '%s' failed at %s:%u, function %s(). Aborting.");
- abort();
-}
-
-noreturn void log_assert_failed_unreachable(const char *text, const char *file, int line, const char *func) {
- log_assert(LOG_CRIT, text, file, line, func, "Code should not be reached '%s' at %s:%u, function %s(). Aborting.");
- abort();
-}
-
-void log_assert_failed_return(const char *text, const char *file, int line, const char *func) {
- PROTECT_ERRNO;
- log_assert(LOG_DEBUG, text, file, line, func, "Assertion '%s' failed at %s:%u, function %s(). Ignoring.");
-}
-
-int log_oom_internal(const char *file, int line, const char *func) {
- log_internal(LOG_ERR, ENOMEM, file, line, func, "Out of memory.");
- return -ENOMEM;
-}
-
-int log_struct_internal(
- int level,
- int error,
- const char *file,
- int line,
- const char *func,
- const char *format, ...) {
-
- char buf[LINE_MAX];
- bool found = false;
- PROTECT_ERRNO;
- va_list ap;
-
- if (error < 0)
- error = -error;
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return -error;
-
- if (log_target == LOG_TARGET_NULL)
- return -error;
-
- if ((level & LOG_FACMASK) == 0)
- level = log_facility | LOG_PRI(level);
-
- 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 = {
- .msg_iov = iovec,
- };
- static const char nl = '\n';
- bool fallback = false;
-
- /* If the journal is available do structured logging */
- log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL);
- IOVEC_SET_STRING(iovec[n++], header);
-
- va_start(ap, format);
- while (format && n + 1 < ELEMENTSOF(iovec)) {
- va_list aq;
- char *m;
-
- /* We need to copy the va_list structure,
- * since vasprintf() leaves it afterwards at
- * an undefined location */
-
- if (error != 0)
- errno = error;
-
- va_copy(aq, ap);
- if (vasprintf(&m, format, aq) < 0) {
- va_end(aq);
- fallback = true;
- goto finish;
- }
- va_end(aq);
-
- /* Now, jump enough ahead, so that we point to
- * the next format string */
- VA_FORMAT_ADVANCE(format, ap);
-
- IOVEC_SET_STRING(iovec[n++], m);
-
- iovec[n].iov_base = (char*) &nl;
- iovec[n].iov_len = 1;
- n++;
-
- format = va_arg(ap, char *);
- }
-
- mh.msg_iovlen = n;
-
- (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL);
-
- finish:
- va_end(ap);
- for (i = 1; i < n; i += 2)
- free(iovec[i].iov_base);
-
- if (!fallback)
- return -error;
- }
-
- /* Fallback if journal logging is not available or didn't work. */
-
- va_start(ap, format);
- while (format) {
- va_list aq;
-
- if (error != 0)
- errno = error;
-
- va_copy(aq, ap);
- vsnprintf(buf, sizeof(buf), format, aq);
- va_end(aq);
-
- if (startswith(buf, "MESSAGE=")) {
- found = true;
- break;
- }
-
- VA_FORMAT_ADVANCE(format, ap);
-
- format = va_arg(ap, char *);
- }
- va_end(ap);
-
- if (!found)
- return -error;
-
- return log_dispatch(level, error, file, line, func, NULL, NULL, buf + 8);
-}
-
-int log_set_target_from_string(const char *e) {
- LogTarget t;
-
- t = log_target_from_string(e);
- if (t < 0)
- return -EINVAL;
-
- log_set_target(t);
- return 0;
-}
-
-int log_set_max_level_from_string(const char *e) {
- int t;
-
- t = log_level_from_string(e);
- if (t < 0)
- return t;
-
- log_set_max_level(t);
- return 0;
-}
-
-static int parse_proc_cmdline_item(const char *key, const char *value) {
-
- /*
- * The systemd.log_xyz= settings are parsed by all tools, and
- * so is "debug".
- *
- * However, "quiet" is only parsed by PID 1, and only turns of
- * status output to /dev/console, but does not alter the log
- * level.
- */
-
- if (streq(key, "debug") && !value)
- log_set_max_level(LOG_DEBUG);
-
- else if (streq(key, "systemd.log_target") && value) {
-
- if (log_set_target_from_string(value) < 0)
- log_warning("Failed to parse log target '%s'. Ignoring.", value);
-
- } else if (streq(key, "systemd.log_level") && value) {
-
- if (log_set_max_level_from_string(value) < 0)
- log_warning("Failed to parse log level '%s'. Ignoring.", value);
-
- } else if (streq(key, "systemd.log_color") && value) {
-
- if (log_show_color_from_string(value) < 0)
- log_warning("Failed to parse log color setting '%s'. Ignoring.", value);
-
- } else if (streq(key, "systemd.log_location") && value) {
-
- if (log_show_location_from_string(value) < 0)
- log_warning("Failed to parse log location setting '%s'. Ignoring.", value);
- }
-
- return 0;
-}
-
-void log_parse_environment(void) {
- const char *e;
-
- if (get_ctty_devnr(0, NULL) < 0)
- /* Only try to read the command line in daemons.
- We assume that anything that has a controlling
- tty is user stuff. */
- (void) parse_proc_cmdline(parse_proc_cmdline_item);
-
- 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);
-
- 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);
-
- e = secure_getenv("SYSTEMD_LOG_COLOR");
- if (e && log_show_color_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 log_target;
-}
-
-int log_get_max_level(void) {
- return log_max_level;
-}
-
-void log_show_color(bool b) {
- show_color = b;
-}
-
-bool log_get_show_color(void) {
- return show_color;
-}
-
-void log_show_location(bool b) {
- show_location = b;
-}
-
-bool log_get_show_location(void) {
- return show_location;
-}
-
-int log_show_color_from_string(const char *e) {
- int t;
-
- t = parse_boolean(e);
- if (t < 0)
- return t;
-
- log_show_color(t);
- return 0;
-}
-
-int log_show_location_from_string(const char *e) {
- int t;
-
- t = parse_boolean(e);
- if (t < 0)
- return t;
-
- log_show_location(t);
- return 0;
-}
-
-bool log_on_console(void) {
- if (log_target == LOG_TARGET_CONSOLE ||
- log_target == LOG_TARGET_CONSOLE_PREFIXED)
- return true;
-
- return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0;
-}
-
-static const char *const log_target_table[_LOG_TARGET_MAX] = {
- [LOG_TARGET_CONSOLE] = "console",
- [LOG_TARGET_CONSOLE_PREFIXED] = "console-prefixed",
- [LOG_TARGET_KMSG] = "kmsg",
- [LOG_TARGET_JOURNAL] = "journal",
- [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg",
- [LOG_TARGET_SYSLOG] = "syslog",
- [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg",
- [LOG_TARGET_AUTO] = "auto",
- [LOG_TARGET_SAFE] = "safe",
- [LOG_TARGET_NULL] = "null"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget);
-
-void log_received_signal(int level, const struct signalfd_siginfo *si) {
- if (si->ssi_pid > 0) {
- _cleanup_free_ char *p = NULL;
-
- get_process_comm(si->ssi_pid, &p);
-
- log_full(level,
- "Received SIG%s from PID %"PRIu32" (%s).",
- signal_to_string(si->ssi_signo),
- si->ssi_pid, strna(p));
- } else
- log_full(level,
- "Received SIG%s.",
- signal_to_string(si->ssi_signo));
-
-}
-
-void log_set_upgrade_syslog_to_journal(bool b) {
- upgrade_syslog_to_journal = b;
-}
-
-int log_syntax_internal(
- const char *unit,
- int level,
- const char *config_file,
- unsigned config_line,
- int error,
- const char *file,
- int line,
- const char *func,
- const char *format, ...) {
-
- PROTECT_ERRNO;
- char buffer[LINE_MAX];
- int r;
- va_list ap;
-
- if (error < 0)
- error = -error;
-
- if (_likely_(LOG_PRI(level) > log_max_level))
- return -error;
-
- if (log_target == LOG_TARGET_NULL)
- return -error;
-
- if (error != 0)
- errno = error;
-
- va_start(ap, format);
- vsnprintf(buffer, sizeof(buffer), format, ap);
- va_end(ap);
-
- if (unit)
- r = log_struct_internal(
- level, error,
- file, line, func,
- getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s", unit,
- LOG_MESSAGE_ID(SD_MESSAGE_INVALID_CONFIGURATION),
- "CONFIG_FILE=%s", config_file,
- "CONFIG_LINE=%u", config_line,
- LOG_MESSAGE("[%s:%u] %s", config_file, config_line, buffer),
- NULL);
- else
- r = log_struct_internal(
- level, error,
- file, line, func,
- LOG_MESSAGE_ID(SD_MESSAGE_INVALID_CONFIGURATION),
- "CONFIG_FILE=%s", config_file,
- "CONFIG_LINE=%u", config_line,
- LOG_MESSAGE("[%s:%u] %s", config_file, config_line, buffer),
- NULL);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff