github.com/afumu/libc@v0.0.6/musl/src/process/posix_spawn_file_actions_adddup2.c (about)

     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  	struct fdop *op = malloc(sizeof *op);
     9  	if (!op) return ENOMEM;
    10  	op->cmd = FDOP_DUP2;
    11  	op->srcfd = srcfd;
    12  	op->fd = fd;
    13  	if ((op->next = fa->__actions)) op->next->prev = op;
    14  	op->prev = 0;
    15  	fa->__actions = op;
    16  	return 0;
    17  }