Blame src/functional/spawn.c

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#ifndef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#endif
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <spawn.h>
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#include <sys/wait.h>
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#include "test.h"
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#define TEST(f, x) (void)( \
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	(r = (f)) == (x) || \
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	error("%s failed, got %d want %d\n", #f, r, x) )
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#define TEST_E(f) (void)( \
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	(errno = 0), (f) || \
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	error("%s failed (errno = %d \"%s\")\n", #f, errno, strerror(errno)) )
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int main(void)
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{
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	int r;
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	char foo[10];
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	int p[2];
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	pid_t pid;
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	int status;
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	posix_spawn_file_actions_t fa;
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	TEST_E(!pipe(p));
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	TEST(posix_spawn_file_actions_init(&fa), 0);
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	TEST(posix_spawn_file_actions_addclose(&fa, p[0]), 0);
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	TEST(posix_spawn_file_actions_adddup2(&fa, p[1], 1), 0);
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	TEST(posix_spawn_file_actions_addclose(&fa, p[1]), 0);
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	TEST(posix_spawnp(&pid, "echo", &fa, 0, (char *[]){"echo","hello",0}, 0), 0);
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	close(p[1]);
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	TEST(waitpid(pid, &status, 0), pid);
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	TEST(read(p[0], foo, sizeof foo), 6);
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	close(p[0]);
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	TEST(posix_spawn_file_actions_destroy(&fa), 0);
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	return test_status;
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}