/* $Id: log.c,v 1.1.1.1 2007-07-09 19:03:33 nicm Exp $ */ /* * 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 "tmux.h" /* Logging enabled. */ int log_enabled; /* Log stream or NULL to use syslog. */ FILE *log_stream; /* Debug level. */ int log_level; /* Open log. */ void log_open(FILE *f, int facility, int level) { log_stream = f; log_level = level; if (f == NULL) openlog(__progname, LOG_PID|LOG_NDELAY, facility); tzset(); log_enabled = 1; } /* Close logging. */ void log_close(void) { if (log_stream != NULL) fclose(log_stream); log_enabled = 0; } /* Write a log message. */ void log_write(FILE *f, int priority, const char *fmt, ...) { va_list ap; va_start(ap, fmt); log_vwrite(f, priority, fmt, ap); va_end(ap); } /* Write a log message. */ void log_vwrite(FILE *f, int priority, const char *fmt, va_list ap) { if (!log_enabled) return; if (f == NULL) { vsyslog(priority, fmt, ap); return; } if (vfprintf(f, fmt, ap) == -1) exit(1); if (fputc('\n', f) == EOF) exit(1); fflush(log_stream); } /* Log a warning with error string. */ void printflike1 log_warn(const char *msg, ...) { va_list ap; char *fmt; if (!log_enabled) return; va_start(ap, msg); if (asprintf(&fmt, "%s: %s", msg, strerror(errno)) == -1) exit(1); log_vwrite(log_stream, LOG_CRIT, fmt, ap); xfree(fmt); va_end(ap); } /* Log a warning. */ void printflike1 log_warnx(const char *msg, ...) { va_list ap; va_start(ap, msg); log_vwrite(log_stream, LOG_CRIT, 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); if (log_stream == stderr) log_vwrite(stdout, LOG_INFO, msg, ap); else log_vwrite(log_stream, LOG_INFO, 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(log_stream, LOG_DEBUG, 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(log_stream, LOG_DEBUG, msg, ap); va_end(ap); } } /* Log a debug message at level 3. */ void printflike1 log_debug3(const char *msg, ...) { va_list ap; if (log_level > 2) { va_start(ap, msg); log_vwrite(log_stream, LOG_DEBUG, 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 (!log_enabled) exit(1); if (errno != 0) { if (asprintf(&fmt, "fatal: %s: %s", msg, strerror(errno)) == -1) exit(1); log_vwrite(log_stream, LOG_CRIT, fmt, ap); } else { if (asprintf(&fmt, "fatal: %s", msg) == -1) exit(1); log_vwrite(log_stream, LOG_CRIT, fmt, ap); } xfree(fmt); exit(1); } /* Log a critical error, with error string, and die. */ __dead void log_fatal(const char *msg, ...) { va_list ap; va_start(ap, msg); log_vfatal(msg, ap); } /* Log a critical error and die. */ __dead void log_fatalx(const char *msg, ...) { va_list ap; errno = 0; va_start(ap, msg); log_vfatal(msg, ap); }