glibc/libio/tst-popen1.c

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#include <fcntl.h>
#include <stdio.h>
static int
do_test (void)
{
int res = 0;
FILE *fp = popen ("echo hello", "r");
if (fp == NULL)
{
puts ("first popen failed");
res = 1;
}
else
{
int fd = fileno (fp);
if (fcntl (fd, F_GETFD) == FD_CLOEXEC)
{
puts ("first popen(\"r\") set FD_CLOEXEC");
res = 1;
}
pclose (fp);
}
fp = popen ("echo hello", "re");
if (fp == NULL)
{
puts ("second popen failed");
res = 1;
}
else
{
int fd = fileno (fp);
if (fcntl (fd, F_GETFD) != FD_CLOEXEC)
{
puts ("second popen(\"r\") did not set FD_CLOEXEC");
res = 1;
}
pclose (fp);
}
return res;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"