source4/heimdal_build/replace.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    some replacement functions for parts of roken that don't fit easily into
   5    our build system
   6
   7    Copyright (C) Andrew Tridgell 2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "config.h"
  24 #include "err.h"
  25 #include "roken.h"
  26 #include "system/filesys.h"
  27
  28 #ifndef HAVE_ERR
  29  void err(int eval, const char *format, ...)
  30 {
  31         va_list ap;
  32         va_start(ap, format);
  33         vfprintf(stderr, format, ap);
  34         perror("");
  35         va_end(ap);
  36         exit(eval);
  37 }
  38 #endif
  39
  40 #ifndef HAVE_ERRX
  41  void errx(int eval, const char *format, ...)
  42 {
  43         va_list ap;
  44         va_start(ap, format);
  45         vfprintf(stderr, format, ap);
  46         va_end(ap);
  47         exit(eval);
  48 }
  49 #endif
  50
  51 #ifndef HAVE_WARNX
  52  void warnx(const char *format, ...)
  53 {
  54         va_list ap;
  55         va_start(ap, format);
  56         vfprintf(stderr, format, ap);
  57         va_end(ap);
  58 }
  59 #endif
  60
  61 #ifndef HAVE_FLOCK
  62  int flock(int fd, int op)
  63 {
  64 #undef flock
  65         struct flock lock;
  66         lock.l_whence = 0;
  67         lock.l_start = 0;
  68         lock.l_len = 0;
  69         lock.l_pid = 0;
  70
  71         switch (op & (LOCK_UN|LOCK_SH|LOCK_EX)) {
  72         case LOCK_UN:
  73                 lock.l_type = F_UNLCK;
  74                 return fcntl(fd, F_SETLK, &lock);
  75         case LOCK_SH:
  76                 lock.l_type = F_RDLCK;
  77                 return fcntl(fd, (op&LOCK_NB)?F_SETLK:F_SETLKW, &lock);
  78         case LOCK_EX:
  79                 lock.l_type = F_WRLCK;
  80                 return fcntl(fd, (op&LOCK_NB)?F_SETLK:F_SETLKW, &lock);
  81         }
  82         errno = EINVAL;
  83         return -1;
  84 }
  85 #endif