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/* fcntl-linux.h doesn't define F_GETPIPE_SZ and F_SETPIPE_SZ without
* this */
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <unistd.h>
#include <string.h>
int test_pipe_sz()
{
#if defined(F_GETPIPE_SZ) && defined(F_SETPIPE_SZ)
int pipefd[2];
if (pipe(pipefd) < 0) {
perror("pipe");
return 1;
}
const int orig_size = fcntl(pipefd[0], F_GETPIPE_SZ);
if (orig_size < 0) {
perror("F_GETPIPE_SZ");
return 1;
}
const int new_size = orig_size * 2;
if (fcntl(pipefd[0], F_SETPIPE_SZ, new_size) < 0) {
perror("F_SETPIPE_SZ");
return 1;
}
const int final_size = fcntl(pipefd[0], F_GETPIPE_SZ);
if (final_size < 0) {
perror("Second F_GETPIPE_SZ");
return 1;
}
if (final_size < new_size) {
fprintf(stderr, "Unexpected final pipe size: %d\n", final_size);
return 1;
}
#else
printf("Host too old for F_GETPIPE_SZ and F_SETPIPE_SZ tests\n");
#endif
return 0;
}
int main()
{
int result = 0;
result += test_pipe_sz();
return result;
}
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