mirror of
https://git.proxmox.com/git/mirror_zfs
synced 2025-04-28 22:12:04 +00:00
e4f1d29f89
stuff which only inclused the getf()/releasef() in to the vnode area where it will only really be used. These calls allow a user to grab an open file struct given only the known open fd for a particular user context. ZFS makes use of these, but they're a bit tricky to test from within the kernel since you already need the file open and know the fd. So we basically spook the system calls to setup the environment we need for the splat test case and verify given just the know fd we can get the file, create the needed vnode, and then use the vnode interface as usual to read and write from it. While I was hacking away I also noticed a NULL termination issue in the second kobj test case so I fixed that too. In fact, I fixed a few other things as well but all for the best! git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@51 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
494 lines
14 KiB
C
494 lines
14 KiB
C
#include "splat-internal.h"
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#include <linux/rcupdate.h>
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#define SPLAT_SUBSYSTEM_VNODE 0x0900
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#define SPLAT_VNODE_NAME "vnode"
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#define SPLAT_VNODE_DESC "Kernel Vnode Tests"
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#define SPLAT_VNODE_TEST1_ID 0x0901
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#define SPLAT_VNODE_TEST1_NAME "vn_open"
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#define SPLAT_VNODE_TEST1_DESC "Vn_open Test"
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#define SPLAT_VNODE_TEST2_ID 0x0902
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#define SPLAT_VNODE_TEST2_NAME "vn_openat"
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#define SPLAT_VNODE_TEST2_DESC "Vn_openat Test"
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#define SPLAT_VNODE_TEST3_ID 0x0903
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#define SPLAT_VNODE_TEST3_NAME "vn_rdwr"
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#define SPLAT_VNODE_TEST3_DESC "Vn_rdwrt Test"
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#define SPLAT_VNODE_TEST4_ID 0x0904
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#define SPLAT_VNODE_TEST4_NAME "vn_rename"
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#define SPLAT_VNODE_TEST4_DESC "Vn_rename Test"
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#define SPLAT_VNODE_TEST5_ID 0x0905
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#define SPLAT_VNODE_TEST5_NAME "vn_getattr"
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#define SPLAT_VNODE_TEST5_DESC "Vn_getattr Test"
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#define SPLAT_VNODE_TEST6_ID 0x0906
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#define SPLAT_VNODE_TEST6_NAME "vn_sync"
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#define SPLAT_VNODE_TEST6_DESC "Vn_sync Test"
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#define SPLAT_VNODE_TEST7_ID 0x0907
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#define SPLAT_VNODE_TEST7_NAME "getf"
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#define SPLAT_VNODE_TEST7_DESC "getf/releasef Test"
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#define SPLAT_VNODE_TEST_FILE "/etc/fstab"
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#define SPLAT_VNODE_TEST_FILE_AT "etc/fstab"
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#define SPLAT_VNODE_TEST_FILE_RW "/tmp/spl.vnode.tmp"
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#define SPLAT_VNODE_TEST_FILE_RW1 "/tmp/spl.vnode.tmp.1"
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#define SPLAT_VNODE_TEST_FILE_RW2 "/tmp/spl.vnode.tmp.2"
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static int
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splat_vnode_test1(struct file *file, void *arg)
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{
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vnode_t *vp;
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int rc;
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE, UIO_SYSSPACE,
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FREAD, 0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST1_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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return rc;
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}
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rc = VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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if (rc) {
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splat_vprint(file, SPLAT_VNODE_TEST1_NAME,
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"Failed to vn_close test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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return rc;
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}
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splat_vprint(file, SPLAT_VNODE_TEST1_NAME, "Successfully vn_open'ed "
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"and vn_closed test file: %s\n", SPLAT_VNODE_TEST_FILE);
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return rc;
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} /* splat_vnode_test1() */
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static int
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splat_vnode_test2(struct file *file, void *arg)
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{
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vnode_t *vp;
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int rc;
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if ((rc = vn_openat(SPLAT_VNODE_TEST_FILE_AT, UIO_SYSSPACE,
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FREAD, 0644, &vp, 0, 0, rootdir, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST2_NAME,
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"Failed to vn_openat test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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return rc;
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}
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rc = VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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if (rc) {
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splat_vprint(file, SPLAT_VNODE_TEST2_NAME,
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"Failed to vn_close test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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return rc;
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}
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splat_vprint(file, SPLAT_VNODE_TEST2_NAME, "Successfully vn_openat'ed "
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"and vn_closed test file: %s\n", SPLAT_VNODE_TEST_FILE);
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return rc;
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} /* splat_vnode_test2() */
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static int
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splat_vnode_test3(struct file *file, void *arg)
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{
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vnode_t *vp;
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char buf1[32] = "SPL VNode Interface Test File\n";
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char buf2[32] = "";
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int rc;
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE,
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FWRITE | FREAD | FCREAT | FEXCL,
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0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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return rc;
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}
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rc = vn_rdwr(UIO_WRITE, vp, buf1, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
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"Failed vn_rdwr write of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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rc = vn_rdwr(UIO_READ, vp, buf2, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
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"Failed vn_rdwr read of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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if (strncmp(buf1, buf2, strlen(buf1))) {
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rc = -EINVAL;
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME,
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"Failed strncmp data written does not match "
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"data read\nWrote: %sRead: %s\n", buf1, buf2);
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goto out;
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}
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rc = 0;
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Wrote: %s", buf1);
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Read: %s", buf2);
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Successfully wrote and "
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"read expected data pattern to test file: %s\n",
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SPLAT_VNODE_TEST_FILE_RW);
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out:
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VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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vn_remove(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE, RMFILE);
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return rc;
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} /* splat_vnode_test3() */
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static int
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splat_vnode_test4(struct file *file, void *arg)
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{
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vnode_t *vp;
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char buf1[32] = "SPL VNode Interface Test File\n";
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char buf2[32] = "";
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int rc;
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW1, UIO_SYSSPACE,
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FWRITE | FREAD | FCREAT | FEXCL, 0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW1, rc);
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goto out;
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}
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rc = vn_rdwr(UIO_WRITE, vp, buf1, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
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"Failed vn_rdwr write of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW1, rc);
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goto out2;
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}
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VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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rc = vn_rename(SPLAT_VNODE_TEST_FILE_RW1,SPLAT_VNODE_TEST_FILE_RW2,0);
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if (rc) {
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Failed vn_rename "
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"%s -> %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW1,
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SPLAT_VNODE_TEST_FILE_RW2, rc);
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goto out;
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}
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW2, UIO_SYSSPACE,
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FREAD | FEXCL, 0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW2, rc);
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goto out;
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}
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rc = vn_rdwr(UIO_READ, vp, buf2, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
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"Failed vn_rdwr read of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW2, rc);
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goto out2;
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}
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if (strncmp(buf1, buf2, strlen(buf1))) {
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rc = EINVAL;
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME,
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"Failed strncmp data written does not match "
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"data read\nWrote: %sRead: %s\n", buf1, buf2);
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goto out2;
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}
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rc = 0;
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Wrote to %s: %s",
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SPLAT_VNODE_TEST_FILE_RW1, buf1);
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Read from %s: %s",
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SPLAT_VNODE_TEST_FILE_RW2, buf2);
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splat_vprint(file, SPLAT_VNODE_TEST4_NAME, "Successfully renamed "
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"test file %s -> %s and verified data pattern\n",
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SPLAT_VNODE_TEST_FILE_RW1, SPLAT_VNODE_TEST_FILE_RW2);
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out2:
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VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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out:
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vn_remove(SPLAT_VNODE_TEST_FILE_RW1, UIO_SYSSPACE, RMFILE);
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vn_remove(SPLAT_VNODE_TEST_FILE_RW2, UIO_SYSSPACE, RMFILE);
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return rc;
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} /* splat_vnode_test4() */
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static int
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splat_vnode_test5(struct file *file, void *arg)
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{
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vnode_t *vp;
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vattr_t vap;
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int rc;
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE, UIO_SYSSPACE,
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FREAD, 0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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return rc;
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}
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rc = VOP_GETATTR(vp, &vap, 0, 0, NULL);
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if (rc) {
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splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
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"Failed to vn_getattr test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE, rc);
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goto out;
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}
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if (vap.va_type != VREG) {
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rc = -EINVAL;
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splat_vprint(file, SPLAT_VNODE_TEST5_NAME,
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"Failed expected regular file type "
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"(%d != VREG): %s (%d)\n", vap.va_type,
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SPLAT_VNODE_TEST_FILE, rc);
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goto out;
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}
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splat_vprint(file, SPLAT_VNODE_TEST1_NAME, "Successfully "
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"vn_getattr'ed test file: %s\n", SPLAT_VNODE_TEST_FILE);
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out:
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VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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return rc;
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} /* splat_vnode_test5() */
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static int
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splat_vnode_test6(struct file *file, void *arg)
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{
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vnode_t *vp;
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char buf[32] = "SPL VNode Interface Test File\n";
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int rc;
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if ((rc = vn_open(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE,
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FWRITE | FREAD | FCREAT | FEXCL, 0644, &vp, 0, 0))) {
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splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
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"Failed to vn_open test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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return rc;
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}
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rc = vn_rdwr(UIO_WRITE, vp, buf, strlen(buf), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
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"Failed vn_rdwr write of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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rc = vn_fsync(vp, 0, 0, 0);
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if (rc) {
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splat_vprint(file, SPLAT_VNODE_TEST6_NAME,
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"Failed vn_fsync of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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rc = 0;
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splat_vprint(file, SPLAT_VNODE_TEST6_NAME, "Successfully "
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"fsync'ed test file %s\n", SPLAT_VNODE_TEST_FILE_RW);
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out:
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VOP_CLOSE(vp, 0, 0, 0, 0, 0);
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VN_RELE(vp);
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vn_remove(SPLAT_VNODE_TEST_FILE_RW, UIO_SYSSPACE, RMFILE);
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return rc;
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} /* splat_vnode_test6() */
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/* Basically a slightly modified version of sys_close() */
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static int
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fd_uninstall(int fd)
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{
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struct file *fp;
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struct files_struct *files = current->files;
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struct fdtable *fdt;
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spin_lock(&files->file_lock);
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fdt = files_fdtable(files);
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if (fd >= fdt->max_fds)
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goto out_unlock;
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fp = fdt->fd[fd];
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if (!fp)
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goto out_unlock;
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rcu_assign_pointer(fdt->fd[fd], NULL);
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FD_CLR(fd, fdt->close_on_exec);
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/* Dropping the lock here exposes a minor race but it allows me
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* to use the existing kernel interfaces for this, and for a test
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* case I think that's reasonable. */
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spin_unlock(&files->file_lock);
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put_unused_fd(fd);
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out_unlock:
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spin_unlock(&files->file_lock);
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return -EBADF;
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} /* fd_uninstall() */
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static int
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splat_vnode_test7(struct file *file, void *arg)
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{
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char buf1[32] = "SPL VNode Interface Test File\n";
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char buf2[32] = "";
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struct file *lfp;
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file_t *fp;
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int rc, fd;
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/* Prep work needed to test getf/releasef */
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fd = get_unused_fd();
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if (fd < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed to get unused fd (%d)\n", fd);
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return fd;
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}
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lfp = filp_open(SPLAT_VNODE_TEST_FILE_RW, O_RDWR|O_CREAT|O_EXCL, 0644);
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if (IS_ERR(lfp)) {
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put_unused_fd(fd);
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rc = PTR_ERR(lfp);
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed to filp_open: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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return rc;
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}
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/* Pair up the new fd and lfp in the current context, this allows
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* getf to lookup the file struct simply by the known open fd */
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fd_install(fd, lfp);
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/* Actual getf()/releasef() test */
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fp = vn_getf(fd);
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if (fp == NULL) {
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rc = -EINVAL;
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed to getf fd %d: (%d)\n", fd, rc);
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goto out;
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}
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rc = vn_rdwr(UIO_WRITE, fp->f_vnode, buf1, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed vn_rdwr write of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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rc = vn_rdwr(UIO_READ, fp->f_vnode, buf2, strlen(buf1), 0,
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UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
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if (rc < 0) {
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed vn_rdwr read of test file: %s (%d)\n",
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SPLAT_VNODE_TEST_FILE_RW, rc);
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goto out;
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}
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if (strncmp(buf1, buf2, strlen(buf1))) {
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rc = -EINVAL;
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splat_vprint(file, SPLAT_VNODE_TEST7_NAME,
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"Failed strncmp data written does not match "
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"data read\nWrote: %sRead: %s\n", buf1, buf2);
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goto out;
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}
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rc = 0;
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splat_vprint(file, SPLAT_VNODE_TEST3_NAME, "Wrote: %s", buf1);
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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() */
|