/// Executes 'mount -t tmpfs' (or a similar variant).
///
/// This function must be called from a subprocess, as it never returns.
///
/// \param mount_point Location on which to mount a tmpfs.
static void
run_mount_tmpfs(const char* mount_point)
{
const char* mount_args[16];
size_t last = 0;
switch (current_os) {
case os_freebsd:
mount_args[last++] = "mdmfs";
mount_args[last++] = "-s16m";
mount_args[last++] = "md";
mount_args[last++] = mount_point;
break;
case os_linux:
mount_args[last++] = "mount";
mount_args[last++] = "-ttmpfs";
mount_args[last++] = "tmpfs";
mount_args[last++] = mount_point;
break;
case os_netbsd:
mount_args[last++] = "mount";
mount_args[last++] = "-ttmpfs";
mount_args[last++] = "tmpfs";
mount_args[last++] = mount_point;
break;
case os_sunos:
mount_args[last++] = "mount";
mount_args[last++] = "-Ftmpfs";
mount_args[last++] = "tmpfs";
mount_args[last++] = mount_point;
break;
default:
err(123, "Don't know how to mount a file system for testing "
"purposes");
}
mount_args[last] = NULL;
const char** arg;
printf("Mounting tmpfs onto %s with:", mount_point);
for (arg = &mount_args[0]; *arg != NULL; arg++)
printf(" %s", *arg);
printf("\n");
const int ret = execvp(mount_args[0], KYUA_DEFS_UNCONST(mount_args));
assert(ret == -1);
err(EXIT_FAILURE, "Failed to exec %s", mount_args[0]);
};
/// Subprocess that validates the disconnection from any terminal.
///
/// \param unused_cookie NULL.
///
/// \post Exits with success if the environment is clean; failure otherwise.
static void
check_no_terminal(const void* KYUA_DEFS_UNUSED_PARAM(cookie))
{
const char* const args[] = {
"/bin/sh",
"-i",
"-c",
"echo success",
NULL
};
execv("/bin/sh", KYUA_DEFS_UNCONST(args));
abort();
}
