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usr / src / contrib / netbsd-tests / fs / tmpfs /

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📄 README(891 B)
📄 h_funcs.subr(3.39 KB)
📄 h_tools.c(7.28 KB)
📄 t_create.sh(3.93 KB)
📄 t_devices.sh(2.21 KB)
📄 t_dots.sh(2.35 KB)
📄 t_exec.sh(2.04 KB)
📄 t_link.sh(4.8 KB)
📄 t_mkdir.sh(4.81 KB)
📄 t_mknod.sh(3.85 KB)
📄 t_mount.sh(4.51 KB)
📄 t_pipes.sh(1.88 KB)
📄 t_read_write.sh(2.93 KB)
📄 t_readdir.sh(3.48 KB)
📄 t_remove.sh(3.52 KB)
📄 t_rename.sh(8.56 KB)
📄 t_renamerace.c(2.21 KB)
📄 t_rmdir.sh(5.62 KB)
📄 t_setattr.sh(5.87 KB)
📄 t_sizes.sh(4.31 KB)
📄 t_sockets.sh(1.99 KB)
📄 t_statvfs.sh(2.33 KB)
📄 t_symlink.sh(3.56 KB)
📄 t_times.sh(4.89 KB)
📄 t_trail_slash.sh(2.02 KB)
📄 t_truncate.sh(2.16 KB)
📄 t_vnd.sh(3.26 KB)
📄 t_vnode_leak.sh(2.47 KB)

Editing: t_renamerace.c

/*	$NetBSD: t_renamerace.c,v 1.14 2017/01/13 21:30:40 christos Exp $	*/

/*
 * Modified for rump and atf from a program supplied
 * by Nicolas Joly in kern/40948
 */

#include <sys/types.h>
#include <sys/mount.h>
#include <sys/utsname.h>

#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <rump/rump.h>
#include <rump/rump_syscalls.h>

#include <fs/tmpfs/tmpfs_args.h>

#include "h_macros.h"

ATF_TC(renamerace2);
ATF_TC_HEAD(renamerace2, tc)
{
	atf_tc_set_md_var(tc, "descr", "rename(2) lock order inversion");
	atf_tc_set_md_var(tc, "timeout", "6");
}

static volatile int quittingtime = 0;
static pid_t wrkpid;

static void *
r2w1(void *arg)
{
	int fd;

rump_pub_lwproc_newlwp(wrkpid);

fd = rump_sys_open("/file", O_CREAT | O_RDWR, 0777);
	if (fd == -1)
		atf_tc_fail_errno("creat");
	rump_sys_close(fd);

while (!quittingtime) {
		if (rump_sys_rename("/file", "/dir/file") == -1)
			atf_tc_fail_errno("rename 1");
		if (rump_sys_rename("/dir/file", "/file") == -1)
			atf_tc_fail_errno("rename 2");
	}

return NULL;
}

static void *
r2w2(void *arg)
{
	int fd;

rump_pub_lwproc_newlwp(wrkpid);

while (!quittingtime) {
		fd = rump_sys_open("/dir/file1", O_RDWR);
		if (fd != -1)
			rump_sys_close(fd);
	}

return NULL;
}

ATF_TC_BODY(renamerace2, tc)
{
	struct tmpfs_args args;
	pthread_t pt[2];

/*
	 * Force SMP regardless of how many host CPUs there are.
	 * Deadlock is highly unlikely to trigger otherwise.
	 */
	setenv("RUMP_NCPU", "2", 1);

rump_init();
	memset(&args, 0, sizeof(args));
	args.ta_version = TMPFS_ARGS_VERSION;
	args.ta_root_mode = 0777;
	if (rump_sys_mount(MOUNT_TMPFS, "/", 0, &args, sizeof(args)) == -1)
		atf_tc_fail_errno("could not mount tmpfs");

if (rump_sys_mkdir("/dir", 0777) == -1)
		atf_tc_fail_errno("cannot create directory");

RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
	RL(wrkpid = rump_sys_getpid());
	pthread_create(&pt[0], NULL, r2w1, NULL);
	pthread_create(&pt[1], NULL, r2w2, NULL);

/* usually triggers in <<1s for me */
	sleep(4);
	quittingtime = 1;

pthread_join(pt[0], NULL);
	pthread_join(pt[1], NULL);
}

ATF_TP_ADD_TCS(tp)
{
	ATF_TP_ADD_TC(tp, renamerace2);

return atf_no_error();
}

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Editing: t_renamerace.c

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