Annotation of src/usr.bin/tmux/log.c, Revision 1.15
1.15 ! nicm 1: /* $OpenBSD: log.c,v 1.14 2015/08/29 00:24:44 nicm 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>
1.15 ! nicm 25: #include <vis.h>
1.1 nicm 26:
27: #include "tmux.h"
28:
1.10 nicm 29: FILE *log_file;
1.1 nicm 30:
1.10 nicm 31: void log_event_cb(int, const char *);
32: void log_vwrite(const char *, va_list);
1.1 nicm 33:
1.5 nicm 34: /* Log callback for libevent. */
35: void
36: log_event_cb(unused int severity, const char *msg)
37: {
1.9 nicm 38: log_debug("%s", msg);
1.5 nicm 39: }
40:
1.1 nicm 41: /* Open logging to file. */
42: void
1.10 nicm 43: log_open(const char *path)
1.1 nicm 44: {
45: log_file = fopen(path, "w");
46: if (log_file == NULL)
47: return;
48:
1.12 millert 49: setvbuf(log_file, NULL, _IOLBF, 0);
1.5 nicm 50: event_set_log_callback(log_event_cb);
1.1 nicm 51:
52: tzset();
53: }
54:
55: /* Close logging. */
56: void
57: log_close(void)
58: {
1.8 nicm 59: if (log_file != NULL)
1.1 nicm 60: fclose(log_file);
1.10 nicm 61: log_file = NULL;
1.5 nicm 62:
63: event_set_log_callback(NULL);
1.1 nicm 64: }
65:
66: /* Write a log message. */
67: void
1.7 nicm 68: log_vwrite(const char *msg, va_list ap)
1.1 nicm 69: {
1.15 ! nicm 70: char *fmt, *out;
1.14 nicm 71: struct timeval tv;
1.8 nicm 72:
73: if (log_file == NULL)
74: return;
1.1 nicm 75:
1.15 ! nicm 76: if (vasprintf(&fmt, msg, ap) == -1)
! 77: exit(1);
! 78: if (stravis(&out, fmt, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL) == -1)
! 79: exit(1);
! 80:
1.14 nicm 81: gettimeofday(&tv, NULL);
1.15 ! nicm 82: if (fprintf(log_file, "%lld.%06d %s\n", (long long)tv.tv_sec,
! 83: (int)tv.tv_usec, out) == -1)
1.7 nicm 84: exit(1);
85: fflush(log_file);
1.15 ! nicm 86:
! 87: free(out);
1.7 nicm 88: free(fmt);
1.1 nicm 89: }
90:
91: /* Log a debug message. */
1.11 nicm 92: void
1.1 nicm 93: log_debug(const char *msg, ...)
94: {
95: va_list ap;
96:
1.10 nicm 97: va_start(ap, msg);
98: log_vwrite(msg, ap);
99: va_end(ap);
1.1 nicm 100: }
101:
1.10 nicm 102: /* Log a critical error with error string and die. */
1.11 nicm 103: __dead void
1.1 nicm 104: log_fatal(const char *msg, ...)
105: {
1.10 nicm 106: char *fmt;
107: va_list ap;
1.1 nicm 108:
109: va_start(ap, msg);
1.10 nicm 110: if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1)
111: exit(1);
112: log_vwrite(fmt, ap);
113: exit(1);
1.1 nicm 114: }
115:
116: /* Log a critical error and die. */
1.11 nicm 117: __dead void
1.1 nicm 118: log_fatalx(const char *msg, ...)
119: {
1.10 nicm 120: char *fmt;
121: va_list ap;
1.1 nicm 122:
123: va_start(ap, msg);
1.10 nicm 124: if (asprintf(&fmt, "fatal: %s", msg) == -1)
125: exit(1);
126: log_vwrite(fmt, ap);
127: exit(1);
1.1 nicm 128: }