skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
git clone https://ccx.te2000.cz/git/skalibs
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open3.c (677B)

      1 /* ISC license. */
      2 
      3 #include <skalibs/sysdeps.h>
      4 #include <skalibs/nonposix.h>
      5 
      6 #include <sys/stat.h>
      7 #include <errno.h>
      8 
      9 #include <skalibs/fcntl.h>
     10 #include <skalibs/djbunix.h>
     11 
     12 #ifdef SKALIBS_HASOCLOEXEC
     13 
     14 int open3 (char const *s, unsigned int flags, unsigned int mode)
     15 {
     16   int r ;
     17   do r = open(s, flags, mode) ;
     18   while (r == -1 && errno == EINTR) ;
     19   return r ;
     20 }
     21 
     22 #else
     23 
     24 int open3 (char const *s, unsigned int flags, unsigned int mode)
     25 {
     26   int fd ;
     27   do fd = open(s, flags & ~O_CLOEXEC, mode) ;
     28   while (fd == -1 && errno == EINTR) ;
     29   if (fd == -1) return -1 ;
     30   if (flags & O_CLOEXEC && coe(fd) == -1)
     31   {
     32     fd_close(fd) ;
     33     return -1 ;
     34   }
     35   return fd ;
     36 }
     37 
     38 #endif