Date: Sun, 8 Dec 2019 06:35:25 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r355525 - user/pho/stress2/misc Message-ID: <201912080635.xB86ZPbI092643@repo.freebsd.org>
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Author: pho Date: Sun Dec 8 06:35:25 2019 New Revision: 355525 URL: https://svnweb.freebsd.org/changeset/base/355525 Log: Added a regression test. Added: user/pho/stress2/misc/ufssuspend.sh (contents, props changed) Added: user/pho/stress2/misc/ufssuspend.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/ufssuspend.sh Sun Dec 8 06:35:25 2019 (r355525) @@ -0,0 +1,133 @@ +#!/bin/sh + +# ioctl(g_ufs_suspend_handle, UFSSUSPEND, &statfsp->f_fsid) test scenario. + +# Bug 230220 - UFS: the freezing ioctl (i.e.UFSSUSPEND) causes panic or EBUSY +# "panic: devfs_set_cdevpriv failed" seen. +# Test scenario by Dexuan Cui <decui microsoft com> +# Fixed by r337055. + +# $FreeBSD$ + +[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 +. ../default.cfg + +cat > /tmp/ufssuspend.c <<EOF + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/param.h> +#include <sys/ucred.h> +#include <sys/mount.h> + +#include <ufs/ffs/fs.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <paths.h> +#include <poll.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <syslog.h> +#include <unistd.h> + +static int g_ufs_suspend_handle = -1; +static const char *dev = "/dev"; + +static int +freeze(void) +{ + struct statfs *mntbuf, *statfsp; + int mntsize; + int error = 0; + int i; + + g_ufs_suspend_handle = open(_PATH_UFSSUSPEND, O_RDWR); + if (g_ufs_suspend_handle == -1) { + printf("unable to open %s", _PATH_UFSSUSPEND); + return (errno); + } + + mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); + if (mntsize == 0) { + printf("There is no mount information\n"); + return (EINVAL); + } + + for (i = mntsize - 1; i >= 0; --i) { + statfsp = &mntbuf[i]; + + if (strncmp(statfsp->f_mntonname, dev, strlen(dev)) == 0) + continue; /* skip to freeze '/dev' */ + + if (statfsp->f_flags & MNT_RDONLY) + continue; /* skip to freeze RDONLY partition */ + + if (strncmp(statfsp->f_fstypename, "ufs", 3) != 0) + continue; /* so far, only UFS can be frozen */ + + printf("suspending fs: %s\n", statfsp->f_mntonname); + error = ioctl(g_ufs_suspend_handle, UFSSUSPEND, &statfsp->f_fsid); + if (error != 0) { + printf("error: %d\n", errno); + error = errno; + } else { + printf("Successfully suspend fs: %s\n", statfsp->f_mntonname); + } + } + + return (error); +} + +/** + * closing the opened handle will thaw the FS. + */ +static int +thaw(void) +{ + int error = 0; + + if (g_ufs_suspend_handle != -1) { + error = close(g_ufs_suspend_handle); + if (!error) { + g_ufs_suspend_handle = -1; + printf("Successfully thaw the fs\n"); + } else { + error = errno; + printf("Fail to thaw the fs: " + "%d %s\n", errno, strerror(errno)); + } + } else { + printf("The fs has already been thawed\n\n"); + } + + return (error); +} + +int +main(void) +{ + int error; + + error = freeze(); + printf("freeze: err=%d\n", error); + + error = thaw(); + printf("thaw: err=%d\n", error); + + return 0; +} +EOF + +mycc -o /tmp/ufssuspend -Wall -Wextra -O2 -g /tmp/ufssuspend.c || exit 1 +rm /tmp/ufssuspend.c + +cd /tmp +./ufssuspend > /dev/null +s=$? +rm /tmp/ufssuspend +exit $s
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