mirror of
https://github.com/tmux/tmux.git
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155 lines
2.9 KiB
C
155 lines
2.9 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include "tmux.h"
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/* Log file, if needed. */
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FILE *log_file;
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/* Debug level. */
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int log_level = 0;
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void log_event_cb(int, const char *);
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void log_vwrite(const char *, va_list);
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__dead void log_vfatal(const char *, va_list);
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/* Log callback for libevent. */
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void
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log_event_cb(unused int severity, const char *msg)
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{
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log_debug("%s", msg);
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}
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/* Open logging to file. */
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void
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log_open(int level, const char *path)
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{
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log_file = fopen(path, "w");
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if (log_file == NULL)
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return;
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log_level = level;
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setlinebuf(log_file);
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event_set_log_callback(log_event_cb);
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tzset();
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}
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/* Close logging. */
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void
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log_close(void)
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{
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if (log_file != NULL)
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fclose(log_file);
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event_set_log_callback(NULL);
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}
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/* Write a log message. */
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void
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log_vwrite(const char *msg, va_list ap)
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{
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char *fmt;
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if (log_file == NULL)
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return;
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if (asprintf(&fmt, "%s\n", msg) == -1)
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exit(1);
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if (vfprintf(log_file, fmt, ap) == -1)
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exit(1);
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fflush(log_file);
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free(fmt);
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}
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/* Log a debug message. */
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void printflike1
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log_debug(const char *msg, ...)
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{
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va_list ap;
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if (log_level > 0) {
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va_start(ap, msg);
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log_vwrite(msg, ap);
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va_end(ap);
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}
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}
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/* Log a debug message at level 2. */
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void printflike1
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log_debug2(const char *msg, ...)
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{
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va_list ap;
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if (log_level > 1) {
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va_start(ap, msg);
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log_vwrite(msg, ap);
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va_end(ap);
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}
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}
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/* Log a critical error, with error string if necessary, and die. */
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__dead void
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log_vfatal(const char *msg, va_list ap)
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{
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char *fmt;
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if (errno != 0) {
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if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1)
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exit(1);
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log_vwrite(fmt, ap);
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} else {
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if (asprintf(&fmt, "fatal: %s", msg) == -1)
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exit(1);
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log_vwrite(fmt, ap);
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}
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free(fmt);
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exit(1);
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}
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/* Log a critical error, with error string, and die. */
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__dead void printflike1
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log_fatal(const char *msg, ...)
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{
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va_list ap;
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va_start(ap, msg);
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log_vfatal(msg, ap);
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}
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/* Log a critical error and die. */
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__dead void printflike1
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log_fatalx(const char *msg, ...)
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{
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va_list ap;
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errno = 0;
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va_start(ap, msg);
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log_vfatal(msg, ap);
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}
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