skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
git clone https://ccx.te2000.cz/git/skalibs
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fd_move.c (291B)

      1 /* ISC license. */
      2 
      3 #include <unistd.h>
      4 #include <errno.h>
      5 #include <skalibs/djbunix.h>
      6 
      7 int fd_move (int to, int from)
      8 {
      9   int r ;
     10   if (to == from) return 0 ;
     11   do
     12     r = dup2(from, to) ;
     13   while ((r == -1) && (errno == EINTR)) ;
     14   if (r < 0) return r ;
     15   fd_close(from) ;
     16   return 0 ;
     17 }