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287 lines
8.3 KiB
C
287 lines
8.3 KiB
C
/*
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* Copyright (C) 2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include "testutils.h"
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#ifdef __linux__
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# include <fcntl.h>
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# include <sys/stat.h>
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# include <unistd.h>
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# include "virstring.h"
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# include "virerror.h"
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# include "virlog.h"
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# include "virscsihost.h"
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# define VIR_FROM_THIS VIR_FROM_NONE
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VIR_LOG_INIT("tests.scsihosttest");
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char *scsihost_class_path;
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# define TEST_SCSIHOST_CLASS_PATH scsihost_class_path
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/*
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* Initialized/create a mock sysfs environment with 4 scsi_host devices
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* located on "0000:00:1f.1" and "0000:00:1f.2". Each directory will
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* contain 4 unique_id files having the same value.
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*
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* The environment is:
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*
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* 4 files:
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*
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* sys/devices/pci0000:00/0000:00:1f.1/ata1/host0/scsi_host/host0/unique_id
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* sys/devices/pci0000:00/0000:00:1f.1/ata2/host1/scsi_host/host1/unique_id
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* sys/devices/pci0000:00/0000:00:1f.2/ata1/host0/scsi_host/host0/unique_id
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* sys/devices/pci0000:00/0000:00:1f.2/ata2/host1/scsi_host/host1/unique_id
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*
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* 4 symlinks:
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*
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* sys/class/scsi_host/host0 -> link to 1f.1 host 0
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* sys/class/scsi_host/host1 -> link to 1f.1 host 1
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* sys/class/scsi_host/host2 -> link to 1f.2 host 0
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* sys/class/scsi_host/host3 -> link to 1f.2 host 1
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*
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* The unique_id's for host0 and host2 are set to "1"
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* The unique_id's for host1 and host3 are set to "2"
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*/
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static int
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create_scsihost(const char *fakesysfsdir, const char *devicepath,
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const char *unique_id, const char *hostname)
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{
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g_autofree char *unique_id_path = NULL;
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g_autofree char *link_path = NULL;
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char *spot;
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VIR_AUTOCLOSE fd = -1;
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unique_id_path = g_strdup_printf("%s/devices/pci0000:00/%s/unique_id",
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fakesysfsdir, devicepath);
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link_path = g_strdup_printf("%s/class/scsi_host/%s",
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fakesysfsdir, hostname);
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/* Rather than create path & file, temporarily snip off the file to
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* create the path
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*/
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if (!(spot = strstr(unique_id_path, "unique_id"))) {
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fprintf(stderr, "Did not find unique_id in path\n");
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return -1;
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}
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spot--;
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*spot = '\0';
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if (g_mkdir_with_parents(unique_id_path, 0755) < 0) {
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fprintf(stderr, "Unable to make path to '%s'\n", unique_id_path);
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return -1;
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}
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*spot = '/';
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/* Rather than create path & file, temporarily snip off the file to
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* create the path
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*/
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if (!(spot = strstr(link_path, hostname))) {
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fprintf(stderr, "Did not find hostname in path\n");
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return -1;
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}
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spot--;
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*spot = '\0';
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if (g_mkdir_with_parents(link_path, 0755) < 0) {
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fprintf(stderr, "Unable to make path to '%s'\n", link_path);
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return -1;
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}
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*spot = '/';
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if ((fd = open(unique_id_path, O_CREAT|O_WRONLY, 0444)) < 0) {
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fprintf(stderr, "Unable to create '%s'\n", unique_id_path);
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return -1;
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}
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if (safewrite(fd, unique_id, 1) != 1) {
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fprintf(stderr, "Unable to write '%s'\n", unique_id);
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return -1;
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}
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VIR_DEBUG("Created unique_id '%s'", unique_id_path);
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/* The link is to the path not the file - so remove the file */
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if (!(spot = strstr(unique_id_path, "unique_id"))) {
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fprintf(stderr, "Did not find unique_id in path\n");
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return -1;
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}
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spot--;
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*spot = '\0';
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if (symlink(unique_id_path, link_path) < 0) {
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fprintf(stderr, "Unable to create symlink '%s' to '%s'\n",
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link_path, unique_id_path);
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return -1;
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}
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VIR_DEBUG("Created symlink '%s'", link_path);
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return 0;
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}
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static int
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init_scsihost_sysfs(const char *fakesysfsdir)
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{
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int ret = 0;
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if (create_scsihost(fakesysfsdir,
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"0000:00:1f.1/ata1/host0/scsi_host/host0",
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"1", "host0") < 0 ||
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create_scsihost(fakesysfsdir,
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"0000:00:1f.1/ata2/host1/scsi_host/host1",
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"2", "host1") < 0 ||
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create_scsihost(fakesysfsdir,
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"0000:00:1f.2/ata1/host0/scsi_host/host0",
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"1", "host2") < 0 ||
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create_scsihost(fakesysfsdir,
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"0000:00:1f.2/ata2/host1/scsi_host/host1",
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"2", "host3") < 0)
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ret = -1;
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return ret;
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}
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/* Test virReadSCSIUniqueId */
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static int
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testVirReadSCSIUniqueId(const void *data G_GNUC_UNUSED)
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{
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int hostnum, unique_id;
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for (hostnum = 0; hostnum < 4; hostnum++) {
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if ((unique_id = virSCSIHostGetUniqueId(TEST_SCSIHOST_CLASS_PATH,
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hostnum)) < 0) {
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fprintf(stderr, "Failed to read hostnum=%d unique_id\n", hostnum);
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return -1;
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}
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/* host0 and host2 have unique_id == 1
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* host1 and host3 have unique_id == 2
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*/
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if ((hostnum == 0 || hostnum == 2) && unique_id != 1) {
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fprintf(stderr, "The unique_id='%d' for hostnum=%d is wrong\n",
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unique_id, hostnum);
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return -1;
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} else if ((hostnum == 1 || hostnum == 3) && unique_id != 2) {
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fprintf(stderr, "The unique_id='%d' for hostnum=%d is wrong\n",
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unique_id, hostnum);
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return -1;
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}
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}
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return 0;
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}
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/* Test virSCSIHostFindByPCI */
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static int
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testVirFindSCSIHostByPCI(const void *data G_GNUC_UNUSED)
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{
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unsigned int unique_id1 = 1;
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unsigned int unique_id2 = 2;
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const char *pci_addr1 = "0000:00:1f.1";
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const char *pci_addr2 = "0000:00:1f.2";
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char *ret_host = NULL;
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int ret = -1;
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if (!(ret_host = virSCSIHostFindByPCI(TEST_SCSIHOST_CLASS_PATH,
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pci_addr1, unique_id1)) ||
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STRNEQ(ret_host, "host0"))
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goto cleanup;
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VIR_FREE(ret_host);
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if (!(ret_host = virSCSIHostFindByPCI(TEST_SCSIHOST_CLASS_PATH,
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pci_addr1, unique_id2)) ||
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STRNEQ(ret_host, "host1"))
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goto cleanup;
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VIR_FREE(ret_host);
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if (!(ret_host = virSCSIHostFindByPCI(TEST_SCSIHOST_CLASS_PATH,
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pci_addr2, unique_id1)) ||
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STRNEQ(ret_host, "host2"))
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goto cleanup;
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VIR_FREE(ret_host);
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if (!(ret_host = virSCSIHostFindByPCI(TEST_SCSIHOST_CLASS_PATH,
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pci_addr2, unique_id2)) ||
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STRNEQ(ret_host, "host3"))
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goto cleanup;
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VIR_FREE(ret_host);
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ret = 0;
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cleanup:
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VIR_FREE(ret_host);
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return ret;
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}
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# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
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static int
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mymain(void)
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{
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int ret = -1;
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g_autofree char *fakerootdir = NULL;
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g_autofree char *fakesysfsdir = NULL;
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fakerootdir = g_strdup(FAKEROOTDIRTEMPLATE);
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if (!g_mkdtemp(fakerootdir)) {
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fprintf(stderr, "Cannot create fakerootdir");
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goto cleanup;
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}
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fakesysfsdir = g_strdup_printf("%s/sys", fakerootdir);
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if (init_scsihost_sysfs(fakesysfsdir) < 0) {
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fprintf(stderr, "Failed to create fakesysfs='%s'\n", fakesysfsdir);
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goto cleanup;
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}
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scsihost_class_path = g_strdup_printf("%s/class/scsi_host", fakesysfsdir);
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VIR_DEBUG("Reading from '%s'", scsihost_class_path);
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if (virTestRun("testVirReadSCSIUniqueId",
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testVirReadSCSIUniqueId, NULL) < 0) {
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ret = -1;
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goto cleanup;
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}
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if (virTestRun("testVirFindSCSIHostByPCI",
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testVirFindSCSIHostByPCI, NULL) < 0) {
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ret = -1;
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goto cleanup;
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}
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ret = 0;
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cleanup:
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if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
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virFileDeleteTree(fakerootdir);
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VIR_FREE(scsihost_class_path);
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return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIR_TEST_MAIN(mymain)
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#else
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int
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main(void)
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{
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return EXIT_AM_SKIP;
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}
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#endif
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