295 lines
5.6 KiB
C
295 lines
5.6 KiB
C
/*-
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* Copyright (c) 2002 Juli Mallett. All rights reserved.
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)main.c 8.3 (Berkeley) 3/19/94
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*-
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* util.c --
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* General utilitarian routines for make(1).
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "globals.h"
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#include "job.h"
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#include "targ.h"
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#include "util.h"
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static void enomem(void) __dead2;
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/*-
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* Debug --
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* Print a debugging message given its format.
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*
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* Results:
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* None.
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*
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* Side Effects:
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* The message is printed.
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*/
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/* VARARGS */
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void
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Debug(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fflush(stderr);
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}
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/*-
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* Print a debugging message given its format and append the current
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* errno description. Terminate with a newline.
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*/
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/* VARARGS */
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void
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DebugM(const char *fmt, ...)
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{
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va_list ap;
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int e = errno;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, ": %s\n", strerror(e));
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va_end(ap);
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fflush(stderr);
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}
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/*-
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* Error --
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* Print an error message given its format.
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*
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* Results:
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* None.
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*
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* Side Effects:
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* The message is printed.
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*/
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/* VARARGS */
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void
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Error(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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fflush(stderr);
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}
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/*-
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* Fatal --
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* Produce a Fatal error message. If jobs are running, waits for them
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* to finish.
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*
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* Results:
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* None
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*
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* Side Effects:
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* The program exits
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*/
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/* VARARGS */
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void
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Fatal(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (jobsRunning)
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Job_Wait();
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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fflush(stderr);
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if (DEBUG(GRAPH2))
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Targ_PrintGraph(2);
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exit(2); /* Not 1 so -q can distinguish error */
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}
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/*
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* Punt --
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* Major exception once jobs are being created. Kills all jobs, prints
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* a message and exits.
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*
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* Results:
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* None
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*
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* Side Effects:
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* All children are killed indiscriminately and the program Lib_Exits
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*/
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/* VARARGS */
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void
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Punt(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "make: ");
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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fflush(stderr);
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DieHorribly();
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}
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/*-
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* DieHorribly --
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* Exit without giving a message.
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*
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* Results:
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* None
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*
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* Side Effects:
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* A big one...
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*/
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void
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DieHorribly(void)
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{
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if (jobsRunning)
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Job_AbortAll();
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if (DEBUG(GRAPH2))
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Targ_PrintGraph(2);
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exit(2); /* Not 1, so -q can distinguish error */
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}
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/*
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* Finish --
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* Called when aborting due to errors in child shell to signal
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* abnormal exit, with the number of errors encountered in Make_Make.
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*
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* Results:
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* None
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*
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* Side Effects:
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* The program exits
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*/
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void
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Finish(int errors)
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{
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Fatal("%d error%s", errors, errors == 1 ? "" : "s");
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}
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/*
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* emalloc --
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* malloc, but die on error.
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*/
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void *
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emalloc(size_t len)
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{
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void *p;
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if ((p = malloc(len)) == NULL)
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enomem();
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return (p);
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}
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/*
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* estrdup --
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* strdup, but die on error.
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*/
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char *
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estrdup(const char *str)
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{
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char *p;
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if ((p = strdup(str)) == NULL)
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enomem();
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return (p);
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}
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/*
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* erealloc --
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* realloc, but die on error.
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*/
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void *
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erealloc(void *ptr, size_t size)
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{
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if ((ptr = realloc(ptr, size)) == NULL)
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enomem();
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return (ptr);
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}
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/*
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* enomem --
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* die when out of memory.
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*/
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static void
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enomem(void)
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{
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err(2, NULL);
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}
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/*
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* enunlink --
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* Remove a file carefully, avoiding directories.
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*/
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int
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eunlink(const char *file)
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{
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struct stat st;
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if (lstat(file, &st) == -1)
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return (-1);
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if (S_ISDIR(st.st_mode)) {
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errno = EISDIR;
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return (-1);
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}
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return (unlink(file));
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}
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