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/*
* Portions created by SGI are Copyright (C) 2000 Silicon Graphics, Inc.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Silicon Graphics, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "st.h"
/*
* Simple error reporting functions.
* Suggested in W. Richard Stevens' "Advanced Programming in UNIX
* Environment".
*/
#define MAXLINE 4096 /* max line length */
static void err_doit(int, int, const char *, va_list);
/*
* Nonfatal error related to a system call.
* Print a message and return.
*/
void err_sys_report(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(fd, 1, fmt, ap);
va_end(ap);
}
/*
* Fatal error related to a system call.
* Print a message and terminate.
*/
void err_sys_quit(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(fd, 1, fmt, ap);
va_end(ap);
exit(1);
}
/*
* Fatal error related to a system call.
* Print a message, dump core, and terminate.
*/
void err_sys_dump(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(fd, 1, fmt, ap);
va_end(ap);
abort(); /* dump core and terminate */
exit(1); /* shouldn't get here */
}
/*
* Nonfatal error unrelated to a system call.
* Print a message and return.
*/
void err_report(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(fd, 0, fmt, ap);
va_end(ap);
}
/*
* Fatal error unrelated to a system call.
* Print a message and terminate.
*/
void err_quit(int fd, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
err_doit(fd, 0, fmt, ap);
va_end(ap);
exit(1);
}
/*
* Return a pointer to a string containing current time.
*/
char *err_tstamp(void)
{
static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
static char str[32];
static time_t lastt = 0;
struct tm *tmp;
time_t currt = st_time();
if (currt == lastt)
return str;
tmp = localtime(&currt);
sprintf(str, "[%02d/%s/%d:%02d:%02d:%02d] ", tmp->tm_mday,
months[tmp->tm_mon], 1900 + tmp->tm_year, tmp->tm_hour,
tmp->tm_min, tmp->tm_sec);
lastt = currt;
return str;
}
/*
* Print a message and return to caller.
* Caller specifies "errnoflag".
*/
static void err_doit(int fd, int errnoflag, const char *fmt, va_list ap)
{
int errno_save;
char buf[MAXLINE];
errno_save = errno; /* value caller might want printed */
strcpy(buf, err_tstamp()); /* prepend a message with time stamp */
vsprintf(buf + strlen(buf), fmt, ap);
if (errnoflag)
sprintf(buf + strlen(buf), ": %s\n", strerror(errno_save));
else
strcat(buf, "\n");
write(fd, buf, strlen(buf));
errno = errno_save;
}
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