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mirror_zfs/modules/splat/splat-vnode.c
behlendo 25557fd884 Sigh more compat fixes, this is almost right for 2.6.9 - 2.6.26 kernels. 
git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@157 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-08-11 23:47:44 +00:00

533 lines
16 KiB
C
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/*
* This file is part of the SPL: Solaris Porting Layer.
*
* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
* Produced at Lawrence Livermore National Laboratory
* Written by:
* Brian Behlendorf <behlendorf1@llnl.gov>,
* Herb Wartens <wartens2@llnl.gov>,
* Jim Garlick <garlick@llnl.gov>
* UCRL-CODE-235197
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "splat-internal.h"
#include <linux/rcupdate.h>
#define SPLAT_SUBSYSTEM_VNODE 0x0900
#define SPLAT_VNODE_NAME "vnode"
#define SPLAT_VNODE_DESC "Kernel Vnode Tests"
#define SPLAT_VNODE_TEST1_ID 0x0901
#define SPLAT_VNODE_TEST1_NAME "vn_open"
#define SPLAT_VNODE_TEST1_DESC "Vn_open Test"
#define SPLAT_VNODE_TEST2_ID 0x0902
#define SPLAT_VNODE_TEST2_NAME "vn_openat"
#define SPLAT_VNODE_TEST2_DESC "Vn_openat Test"
#define SPLAT_VNODE_TEST3_ID 0x0903
#define SPLAT_VNODE_TEST3_NAME "vn_rdwr"
#define SPLAT_VNODE_TEST3_DESC "Vn_rdwrt Test"
#define SPLAT_VNODE_TEST4_ID 0x0904
#define SPLAT_VNODE_TEST4_NAME "vn_rename"
#define SPLAT_VNODE_TEST4_DESC "Vn_rename Test"
#define SPLAT_VNODE_TEST5_ID 0x0905
#define SPLAT_VNODE_TEST5_NAME "vn_getattr"
#define SPLAT_VNODE_TEST5_DESC "Vn_getattr Test"
#define SPLAT_VNODE_TEST6_ID 0x0906
#define SPLAT_VNODE_TEST6_NAME "vn_sync"
#define SPLAT_VNODE_TEST6_DESC "Vn_sync Test"
#define SPLAT_VNODE_TEST7_ID 0x0907
#define SPLAT_VNODE_TEST7_NAME "vn_getf"
#define SPLAT_VNODE_TEST7_DESC "vn_getf/vn_releasef Test"
#define SPLAT_VNODE_TEST_FILE "/etc/fstab"
#define SPLAT_VNODE_TEST_FILE_AT "etc/fstab"
#define SPLAT_VNODE_TEST_FILE_RW "/tmp/spl.vnode.tmp"
#define SPLAT_VNODE_TEST_FILE_RW1 "/tmp/spl.vnode.tmp.1"
#define SPLAT_VNODE_TEST_FILE_RW2 "/tmp/spl.vnode.tmp.2"
static int
splat_vnode_test1(struct file *file, void *arg)
{
vnode_t *vp;
int rc;
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE, UIO_SYSSPACE,
FREAD, 0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST1_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
return rc;
}
rc = VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
if (rc) {
splat_vprint(file, SPLAT_VNODE_TEST1_NAME,
"Failed to vn_close test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
return rc;
}
splat_vprint(file, SPLAT_VNODE_TEST1_NAME, "Successfully vn_open'ed "
"and vn_closed test file: %s\n", SPLAT_VNODE_TEST_FILE);
return rc;
} /* splat_vnode_test1() */
static int
splat_vnode_test2(struct file *file, void *arg)
{
vnode_t *vp;
int rc;
if ((rc = vn_openat(SPLAT_VNODE_TEST_FILE_AT, UIO_SYSSPACE,
FREAD, 0644, &vp, 0, 0, rootdir, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST2_NAME,
"Failed to vn_openat test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
return rc;
}
rc = VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
if (rc) {
splat_vprint(file, SPLAT_VNODE_TEST2_NAME,
"Failed to vn_close test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
return rc;
}
splat_vprint(file, SPLAT_VNODE_TEST2_NAME, "Successfully vn_openat'ed "
"and vn_closed test file: %s\n", SPLAT_VNODE_TEST_FILE);
return rc;
} /* splat_vnode_test2() */
static int
splat_vnode_test3(struct file *file, void *arg)
{
vnode_t *vp;
char buf1[32] = "SPL VNode Interface Test File\n";
char buf2[32] = "";
int rc;
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE,
FWRITE | FREAD | FCREAT | FEXCL,
0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
return rc;
}
rc = vn_rdwr(UIO_WRITE, vp, buf1, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
"Failed vn_rdwr write of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
rc = vn_rdwr(UIO_READ, vp, buf2, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
"Failed vn_rdwr read of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
if (strncmp(buf1, buf2, strlen(buf1))) {
rc = -EINVAL;
splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
"Failed strncmp data written does not match "
"data read\nWrote: %sRead: %s\n", buf1, buf2);
goto out;
}
rc = 0;
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Wrote: %s", buf1);
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Read: %s", buf2);
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Successfully wrote and "
"read expected data pattern to test file: %s\n",
SPLAT_VNODE_TEST_FILE_RW);
out:
VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
vn_remove(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE, RMFILE);
return rc;
} /* splat_vnode_test3() */
static int
splat_vnode_test4(struct file *file, void *arg)
{
vnode_t *vp;
char buf1[32] = "SPL VNode Interface Test File\n";
char buf2[32] = "";
int rc;
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW1, UIO_SYSSPACE,
FWRITE | FREAD | FCREAT | FEXCL, 0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW1, rc);
goto out;
}
rc = vn_rdwr(UIO_WRITE, vp, buf1, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
"Failed vn_rdwr write of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW1, rc);
goto out2;
}
VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
rc = vn_rename(SPLAT_VNODE_TEST_FILE_RW1,SPLAT_VNODE_TEST_FILE_RW2,0);
if (rc) {
splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Failed vn_rename "
"%s -> %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW1,
SPLAT_VNODE_TEST_FILE_RW2, rc);
goto out;
}
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW2, UIO_SYSSPACE,
FREAD | FEXCL, 0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW2, rc);
goto out;
}
rc = vn_rdwr(UIO_READ, vp, buf2, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
"Failed vn_rdwr read of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW2, rc);
goto out2;
}
if (strncmp(buf1, buf2, strlen(buf1))) {
rc = EINVAL;
splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
"Failed strncmp data written does not match "
"data read\nWrote: %sRead: %s\n", buf1, buf2);
goto out2;
}
rc = 0;
splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Wrote to %s: %s",
SPLAT_VNODE_TEST_FILE_RW1, buf1);
splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Read from %s: %s",
SPLAT_VNODE_TEST_FILE_RW2, buf2);
splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Successfully renamed "
"test file %s -> %s and verified data pattern\n",
SPLAT_VNODE_TEST_FILE_RW1, SPLAT_VNODE_TEST_FILE_RW2);
out2:
VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
out:
vn_remove(SPLAT_VNODE_TEST_FILE_RW1, UIO_SYSSPACE, RMFILE);
vn_remove(SPLAT_VNODE_TEST_FILE_RW2, UIO_SYSSPACE, RMFILE);
return rc;
} /* splat_vnode_test4() */
static int
splat_vnode_test5(struct file *file, void *arg)
{
vnode_t *vp;
vattr_t vap;
int rc;
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE, UIO_SYSSPACE,
FREAD, 0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
return rc;
}
rc = VOP_GETATTR(vp, &vap, 0, 0, NULL);
if (rc) {
splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
"Failed to vn_getattr test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE, rc);
goto out;
}
if (vap.va_type != VREG) {
rc = -EINVAL;
splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
"Failed expected regular file type "
"(%d != VREG): %s (%d)\n", vap.va_type,
SPLAT_VNODE_TEST_FILE, rc);
goto out;
}
splat_vprint(file, SPLAT_VNODE_TEST1_NAME, "Successfully "
"vn_getattr'ed test file: %s\n", SPLAT_VNODE_TEST_FILE);
out:
VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
return rc;
} /* splat_vnode_test5() */
static int
splat_vnode_test6(struct file *file, void *arg)
{
vnode_t *vp;
char buf[32] = "SPL VNode Interface Test File\n";
int rc;
if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE,
FWRITE | FCREAT | FEXCL, 0644, &vp, 0, 0))) {
splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
"Failed to vn_open test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
return rc;
}
rc = vn_rdwr(UIO_WRITE, vp, buf, strlen(buf), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
"Failed vn_rdwr write of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
rc = vn_fsync(vp, 0, 0, 0);
if (rc) {
splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
"Failed vn_fsync of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
rc = 0;
splat_vprint(file, SPLAT_VNODE_TEST6_NAME, "Successfully "
"fsync'ed test file %s\n", SPLAT_VNODE_TEST_FILE_RW);
out:
VOP_CLOSE(vp, 0, 0, 0, 0, 0);
VN_RELE(vp);
vn_remove(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE, RMFILE);
return rc;
} /* splat_vnode_test6() */
/* Basically a slightly modified version of sys_close() */
static int
fd_uninstall(int fd)
{
struct file *fp;
struct files_struct *files = current->files;
#ifdef HAVE_FILES_FDTABLE
struct fdtable *fdt;
spin_lock(&files->file_lock);
fdt = files_fdtable(files);
if (fd >= fdt->max_fds)
goto out_unlock;
fp = fdt->fd[fd];
if (!fp)
goto out_unlock;
rcu_assign_pointer(fdt->fd[fd], NULL);
FD_CLR(fd, fdt->close_on_exec);
#else
spin_lock(&files->file_lock);
if (fd >= files->max_fds)
goto out_unlock;
fp = files->fd[fd];
if (!fp)
goto out_unlock;
files->fd[fd] = NULL;
FD_CLR(fd, files->close_on_exec);
#endif
/* Dropping the lock here exposes a minor race but it allows me
* to use the existing kernel interfaces for this, and for a test
* case I think that's reasonable. */
spin_unlock(&files->file_lock);
put_unused_fd(fd);
return 0;
out_unlock:
spin_unlock(&files->file_lock);
return -EBADF;
} /* fd_uninstall() */
static int
splat_vnode_test7(struct file *file, void *arg)
{
char buf1[32] = "SPL VNode Interface Test File\n";
char buf2[32] = "";
struct file *lfp;
file_t *fp;
int rc, fd;
/* Prep work needed to test getf/releasef */
fd = get_unused_fd();
if (fd < 0) {
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed to get unused fd (%d)\n", fd);
return fd;
}
lfp = filp_open(SPLAT_VNODE_TEST_FILE_RW, O_RDWR|O_CREAT|O_EXCL, 0644);
if (IS_ERR(lfp)) {
put_unused_fd(fd);
rc = PTR_ERR(lfp);
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed to filp_open: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
return rc;
}
/* Pair up the new fd and lfp in the current context, this allows
* getf to lookup the file struct simply by the known open fd */
fd_install(fd, lfp);
/* Actual getf()/releasef() test */
fp = vn_getf(fd);
if (fp == NULL) {
rc = -EINVAL;
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed to getf fd %d: (%d)\n", fd, rc);
goto out;
}
rc = vn_rdwr(UIO_WRITE, fp->f_vnode, buf1, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed vn_rdwr write of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
rc = vn_rdwr(UIO_READ, fp->f_vnode, buf2, strlen(buf1), 0,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
if (rc < 0) {
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed vn_rdwr read of test file: %s (%d)\n",
SPLAT_VNODE_TEST_FILE_RW, rc);
goto out;
}
if (strncmp(buf1, buf2, strlen(buf1))) {
rc = -EINVAL;
splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
"Failed strncmp data written does not match "
"data read\nWrote: %sRead: %s\n", buf1, buf2);
goto out;
}
rc = 0;
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Wrote: %s", buf1);
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Read: %s", buf2);
splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Successfully wrote and "
"read expected data pattern to test file: %s\n",
SPLAT_VNODE_TEST_FILE_RW);
out:
vn_releasef(fd);
fd_uninstall(fd);
filp_close(lfp, 0);
vn_remove(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE, RMFILE);
return rc;
} /* splat_vnode_test7() */
splat_subsystem_t *
splat_vnode_init(void)
{
splat_subsystem_t *sub;
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
if (sub == NULL)
return NULL;
memset(sub, 0, sizeof(*sub));
strncpy(sub->desc.name, SPLAT_VNODE_NAME, SPLAT_NAME_SIZE);
strncpy(sub->desc.desc, SPLAT_VNODE_DESC, SPLAT_DESC_SIZE);
INIT_LIST_HEAD(&sub->subsystem_list);
INIT_LIST_HEAD(&sub->test_list);
spin_lock_init(&sub->test_lock);
sub->desc.id = SPLAT_SUBSYSTEM_VNODE;
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST1_NAME, SPLAT_VNODE_TEST1_DESC,
SPLAT_VNODE_TEST1_ID, splat_vnode_test1);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST2_NAME, SPLAT_VNODE_TEST2_DESC,
SPLAT_VNODE_TEST2_ID, splat_vnode_test2);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST3_NAME, SPLAT_VNODE_TEST3_DESC,
SPLAT_VNODE_TEST3_ID, splat_vnode_test3);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST4_NAME, SPLAT_VNODE_TEST4_DESC,
SPLAT_VNODE_TEST4_ID, splat_vnode_test4);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST5_NAME, SPLAT_VNODE_TEST5_DESC,
SPLAT_VNODE_TEST5_ID, splat_vnode_test5);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST6_NAME, SPLAT_VNODE_TEST6_DESC,
SPLAT_VNODE_TEST6_ID, splat_vnode_test6);
SPLAT_TEST_INIT(sub, SPLAT_VNODE_TEST7_NAME, SPLAT_VNODE_TEST7_DESC,
SPLAT_VNODE_TEST7_ID, splat_vnode_test7);
return sub;
} /* splat_vnode_init() */
void
splat_vnode_fini(splat_subsystem_t *sub)
{
ASSERT(sub);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST7_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST6_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST5_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST4_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST3_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST2_ID);
SPLAT_TEST_FINI(sub, SPLAT_VNODE_TEST1_ID);
kfree(sub);
} /* splat_vnode_fini() */
int
splat_vnode_id(void)
{
return SPLAT_SUBSYSTEM_VNODE;
} /* splat_vnode_id() */
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