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only use memcpy realloc to shrink if an exact-sized free chunk exists
[oweals/musl.git]
/
src
/
process
/
posix_spawn_file_actions_adddup2.c
1
#include <spawn.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "fdop.h"
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int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa, int srcfd, int fd)
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{
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struct fdop *op = malloc(sizeof *op);
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if (!op) return ENOMEM;
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op->cmd = FDOP_DUP2;
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op->srcfd = srcfd;
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op->fd = fd;
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if ((op->next = fa->__actions)) op->next->prev = op;
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op->prev = 0;
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fa->__actions = op;
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return 0;
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}