nsz Git - musl/blob - src/process/posix_spawn_file_actions_adddup2.c

   1 #include <spawn.h>
   2 #include <stdlib.h>
   3 #include <errno.h>
   4 #include "fdop.h"
   5
   6 int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa, int srcfd, int fd)
   7 {
   8         if (srcfd < 0 || fd < 0) return EBADF;
   9         struct fdop *op = malloc(sizeof *op);
  10         if (!op) return ENOMEM;
  11         op->cmd = FDOP_DUP2;
  12         op->srcfd = srcfd;
  13         op->fd = fd;
  14         if ((op->next = fa->__actions)) op->next->prev = op;
  15         op->prev = 0;
  16         fa->__actions = op;
  17         return 0;
  18 }