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#include <ccan/read_write_all/read_write_all.h>
#include <ccan/tap/tap.h>
#include <unistd.h>
#include <sys/types.h>
#include <signal.h>
#include <limits.h>
#include <sys/wait.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
static ssize_t test_write(int fd, const void *buf, size_t count);
#define write test_write
#include <ccan/read_write_all/read_write_all.c>
#undef write
static ssize_t write_return;
static ssize_t test_write(int fd, const void *buf, size_t count)
{
if (write_return == 0) {
errno = ENOSPC;
return 0;
}
if (write_return < 0) {
errno = -write_return;
/* Don't return EINTR more than once! */
if (errno == EINTR)
write_return = count;
return -1;
}
if (write_return < count)
return write_return;
return count;
}
#define BUFSZ 1024
int main(int argc, char *argv[])
{
char *buffer;
buffer = malloc(BUFSZ);
plan_tests(8);
write_return = -ENOSPC;
ok1(!write_all(100, buffer, BUFSZ));
ok1(errno == ENOSPC);
write_return = -EINTR;
ok1(write_all(100, buffer, BUFSZ));
ok1(errno == EINTR);
write_return = 1;
errno = 0;
ok1(write_all(100, buffer, BUFSZ));
ok1(errno == 0);
write_return = BUFSZ;
ok1(write_all(100, buffer, BUFSZ));
ok1(errno == 0);
free(buffer);
return exit_status();
}
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