Annotation of src/usr.bin/tmux/log.c, Revision 1.13
1.13 ! nicm 1: /* $OpenBSD: log.c,v 1.12 2014/11/26 18:34:51 millert Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <errno.h>
22: #include <stdio.h>
23: #include <stdlib.h>
24: #include <string.h>
25:
26: #include "tmux.h"
27:
1.10 nicm 28: FILE *log_file;
1.1 nicm 29:
1.10 nicm 30: void log_event_cb(int, const char *);
31: void log_vwrite(const char *, va_list);
1.1 nicm 32:
1.5 nicm 33: /* Log callback for libevent. */
34: void
35: log_event_cb(unused int severity, const char *msg)
36: {
1.9 nicm 37: log_debug("%s", msg);
1.5 nicm 38: }
39:
1.1 nicm 40: /* Open logging to file. */
41: void
1.10 nicm 42: log_open(const char *path)
1.1 nicm 43: {
44: log_file = fopen(path, "w");
45: if (log_file == NULL)
46: return;
47:
1.12 millert 48: setvbuf(log_file, NULL, _IOLBF, 0);
1.5 nicm 49: event_set_log_callback(log_event_cb);
1.1 nicm 50:
51: tzset();
52: }
53:
54: /* Close logging. */
55: void
56: log_close(void)
57: {
1.8 nicm 58: if (log_file != NULL)
1.1 nicm 59: fclose(log_file);
1.10 nicm 60: log_file = NULL;
1.5 nicm 61:
62: event_set_log_callback(NULL);
1.1 nicm 63: }
64:
65: /* Write a log message. */
66: void
1.7 nicm 67: log_vwrite(const char *msg, va_list ap)
1.1 nicm 68: {
69: char *fmt;
1.13 ! nicm 70: time_t t;
1.8 nicm 71:
72: if (log_file == NULL)
73: return;
1.1 nicm 74:
1.13 ! nicm 75: t = time(NULL);
! 76: if (asprintf(&fmt, "%lld %s\n", (long long)t, msg) == -1)
1.7 nicm 77: exit(1);
78: if (vfprintf(log_file, fmt, ap) == -1)
79: exit(1);
80: fflush(log_file);
81: free(fmt);
1.1 nicm 82: }
83:
84: /* Log a debug message. */
1.11 nicm 85: void
1.1 nicm 86: log_debug(const char *msg, ...)
87: {
88: va_list ap;
89:
1.10 nicm 90: va_start(ap, msg);
91: log_vwrite(msg, ap);
92: va_end(ap);
1.1 nicm 93: }
94:
1.10 nicm 95: /* Log a critical error with error string and die. */
1.11 nicm 96: __dead void
1.1 nicm 97: log_fatal(const char *msg, ...)
98: {
1.10 nicm 99: char *fmt;
100: va_list ap;
1.1 nicm 101:
102: va_start(ap, msg);
1.10 nicm 103: if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1)
104: exit(1);
105: log_vwrite(fmt, ap);
106: exit(1);
1.1 nicm 107: }
108:
109: /* Log a critical error and die. */
1.11 nicm 110: __dead void
1.1 nicm 111: log_fatalx(const char *msg, ...)
112: {
1.10 nicm 113: char *fmt;
114: va_list ap;
1.1 nicm 115:
116: va_start(ap, msg);
1.10 nicm 117: if (asprintf(&fmt, "fatal: %s", msg) == -1)
118: exit(1);
119: log_vwrite(fmt, ap);
120: exit(1);
1.1 nicm 121: }