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