safe.c

   1 /* ################################################################### */
   2 /* Copyright 2015, Pierre Gentile (p.gen.progs@gmail.com)              */
   3 /*                                                                     */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public */
   5 /* License, v. 2.0. If a copy of the MPL was not distributed with this */
   6 /* file, You can obtain one at https://mozilla.org/MPL/2.0/.           */
   7 /* ################################################################### */
   8
   9 /* ************************************ */
  10 /* Some wrappers to manage EINTR errors */
  11 /* ************************************ */
  12
  13 #include <stdio.h>
  14 #include <termios.h>
  15 #include <unistd.h>
  16 #include <sys/stat.h>
  17 #include <fcntl.h>
  18 #include <errno.h>
  19
  20 #include "safe.h"
  21
  22 FILE *
  23 fopen_safe(const char * restrict stream, const char * restrict mode)
  24 {
  25   FILE *file;
  26
  27   while ((file = fopen(stream, mode)) == NULL && errno == EINTR)
  28     ;
  29
  30   return file;
  31 }
  32
  33 int
  34 tcsetattr_safe(int                   fildes,
  35                int                   optional_actions,
  36                const struct termios *termios_p)
  37 {
  38   int res;
  39
  40   while ((res = tcsetattr(fildes, optional_actions, termios_p)) == -1
  41          && errno == EINTR)
  42     ;
  43
  44   return res;
  45 }
  46
  47 int
  48 fputc_safe(int c, FILE *stream)
  49 {
  50   int res;
  51
  52   while ((res = fputc(c, stream)) == -1 && errno == EINTR)
  53     ;
  54
  55   return res;
  56 }
  57
  58 int
  59 fputs_safe(const char * restrict s, FILE * restrict stream)
  60 {
  61   int res;
  62
  63   while ((res = fputs(s, stream)) == -1 && errno == EINTR)
  64     ;
  65
  66   return res;
  67 }