Annotation of src/usr.bin/tmux/log.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: log.c,v 1.7 2012/05/25 08:28:10 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>
25: #include <syslog.h>
26: #include <time.h>
27:
28: #include "tmux.h"
29:
30: /* Log file, if needed. */
1.8 ! nicm 31: FILE *log_file;
1.1 nicm 32:
33: /* Debug level. */
1.7 nicm 34: int log_level = 0;
1.1 nicm 35:
1.6 nicm 36: void log_event_cb(int, const char *);
1.7 nicm 37: void log_vwrite(const char *, va_list);
1.2 nicm 38: __dead void log_vfatal(const char *, va_list);
1.1 nicm 39:
1.5 nicm 40: /* Log callback for libevent. */
41: void
42: log_event_cb(unused int severity, const char *msg)
43: {
1.6 nicm 44: log_warnx("%s", msg);
1.5 nicm 45: }
46:
1.1 nicm 47: /* Open logging to file. */
48: void
1.7 nicm 49: log_open(int level, const char *path)
1.1 nicm 50: {
51: log_file = fopen(path, "w");
52: if (log_file == NULL)
53: return;
54: log_level = level;
55:
56: setlinebuf(log_file);
1.5 nicm 57: event_set_log_callback(log_event_cb);
1.1 nicm 58:
59: tzset();
60: }
61:
62: /* Close logging. */
63: void
64: log_close(void)
65: {
1.8 ! nicm 66: if (log_file != NULL)
1.1 nicm 67: fclose(log_file);
1.5 nicm 68:
69: event_set_log_callback(NULL);
1.1 nicm 70: }
71:
72: /* Write a log message. */
73: void
1.7 nicm 74: log_vwrite(const char *msg, va_list ap)
1.1 nicm 75: {
76: char *fmt;
1.8 ! nicm 77:
! 78: if (log_file == NULL)
! 79: return;
1.1 nicm 80:
1.7 nicm 81: if (asprintf(&fmt, "%s\n", msg) == -1)
82: exit(1);
83: if (vfprintf(log_file, fmt, ap) == -1)
84: exit(1);
85: fflush(log_file);
86: free(fmt);
1.1 nicm 87: }
88:
89: /* Log a warning with error string. */
90: void printflike1
91: log_warn(const char *msg, ...)
92: {
93: va_list ap;
94: char *fmt;
95:
96: va_start(ap, msg);
97: if (asprintf(&fmt, "%s: %s", msg, strerror(errno)) == -1)
98: exit(1);
1.7 nicm 99: log_vwrite(fmt, ap);
1.1 nicm 100: free(fmt);
101: va_end(ap);
102: }
103:
104: /* Log a warning. */
105: void printflike1
106: log_warnx(const char *msg, ...)
107: {
108: va_list ap;
109:
110: va_start(ap, msg);
1.7 nicm 111: log_vwrite(msg, ap);
1.1 nicm 112: va_end(ap);
113: }
114:
115: /* Log an informational message. */
116: void printflike1
117: log_info(const char *msg, ...)
118: {
119: va_list ap;
120:
121: if (log_level > -1) {
122: va_start(ap, msg);
1.7 nicm 123: log_vwrite(msg, ap);
1.1 nicm 124: va_end(ap);
125: }
126: }
127:
128: /* Log a debug message. */
129: void printflike1
130: log_debug(const char *msg, ...)
131: {
132: va_list ap;
133:
134: if (log_level > 0) {
135: va_start(ap, msg);
1.7 nicm 136: log_vwrite(msg, ap);
1.1 nicm 137: va_end(ap);
138: }
139: }
140:
141: /* Log a debug message at level 2. */
142: void printflike1
143: log_debug2(const char *msg, ...)
144: {
145: va_list ap;
146:
147: if (log_level > 1) {
148: va_start(ap, msg);
1.7 nicm 149: log_vwrite(msg, ap);
1.1 nicm 150: va_end(ap);
151: }
152: }
153:
154: /* Log a critical error, with error string if necessary, and die. */
155: __dead void
156: log_vfatal(const char *msg, va_list ap)
157: {
158: char *fmt;
159:
160: if (errno != 0) {
161: if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1)
162: exit(1);
1.7 nicm 163: log_vwrite(fmt, ap);
1.1 nicm 164: } else {
165: if (asprintf(&fmt, "fatal: %s", msg) == -1)
1.4 nicm 166: exit(1);
1.7 nicm 167: log_vwrite(fmt, ap);
1.1 nicm 168: }
169: free(fmt);
170:
171: exit(1);
172: }
173:
174: /* Log a critical error, with error string, and die. */
175: __dead void printflike1
176: log_fatal(const char *msg, ...)
177: {
178: va_list ap;
179:
180: va_start(ap, msg);
181: log_vfatal(msg, ap);
182: }
183:
184: /* Log a critical error and die. */
185: __dead void printflike1
186: log_fatalx(const char *msg, ...)
187: {
188: va_list ap;
189:
190: errno = 0;
191: va_start(ap, msg);
192: log_vfatal(msg, ap);
193: }
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