"Fossies" - the Fresh Open Source Software Archive

Member "dhcpcd-9.4.1/compat/dprintf.c" (22 Oct 2021, 1905 Bytes) of package /linux/misc/dhcpcd-9.4.1.tar.xz:

    1 /*
    2  * dhcpcd - DHCP client daemon
    3  * Copyright (c) 2006-2017 Roy Marples <roy@marples.name>
    4  * All rights reserved
    5 
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <stdlib.h>
   29 #include <stdio.h>
   30 #include <stdarg.h>
   31 #include <unistd.h>
   32 
   33 #include "dprintf.h"
   34 
   35 int
   36 vdprintf(int fd, const char * __restrict fmt, va_list va)
   37 {
   38     int e;
   39     FILE *fp;
   40 
   41     if ((e = dup(fd)) == -1)
   42         return -1;
   43 
   44     if ((fp = fdopen(e, "a")) == NULL) {
   45         close(e);
   46         return -1;
   47     }
   48 
   49     e = vfprintf(fp, fmt, va);
   50     fclose(fp);
   51     return e;
   52 }
   53 
   54 int
   55 dprintf(int fd, const char * __restrict fmt, ...)
   56 {
   57     int e;
   58     va_list va;
   59 
   60     va_start(va, fmt);
   61     e = vdprintf(fd, fmt, va);
   62     va_end(va);
   63     return e;
   64 }