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libvirt/tests/scsihosttest.c
Andrea Bolognani 8df2f1d874 tests: scsihost: Use fakerootdir instead of fakesysfsdir 
This updates the test program to make it consistent with recent changes
to the mock libraries, and also opens up the possibility of mocking more
than just /sys in the future.
2015-12-09 15:22:59 +01:00

314 lines
8.9 KiB
C
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/*
* Copyright (C) 2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <config.h>
#include "testutils.h"
#ifdef __linux__
# include <fcntl.h>
# include <sys/stat.h>
# include "virstring.h"
# include "virutil.h"
# include "virerror.h"
# include "virlog.h"
# define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("tests.scsihosttest");
char *scsihost_class_path;
# define TEST_SCSIHOST_CLASS_PATH scsihost_class_path
/*
* Initialized/create a mock sysfs environment with 4 scsi_host devices
* located on "0000:00:1f.1" and "0000:00:1f.2". Each directory will
* contain 4 unique_id files having the same value.
*
* The environment is:
*
* 4 files:
*
* sys/devices/pci0000:00/0000:00:1f.1/ata1/host0/scsi_host/host0/unique_id
* sys/devices/pci0000:00/0000:00:1f.1/ata2/host1/scsi_host/host1/unique_id
* sys/devices/pci0000:00/0000:00:1f.2/ata1/host0/scsi_host/host0/unique_id
* sys/devices/pci0000:00/0000:00:1f.2/ata2/host1/scsi_host/host1/unique_id
*
* 4 symlinks:
*
* sys/class/scsi_host/host0 -> link to 1f.1 host 0
* sys/class/scsi_host/host1 -> link to 1f.1 host 1
* sys/class/scsi_host/host2 -> link to 1f.2 host 0
* sys/class/scsi_host/host3 -> link to 1f.2 host 1
*
* The unique_id's for host0 and host2 are set to "1"
* The unique_id's for host1 and host3 are set to "2"
*/
static int
create_scsihost(const char *fakesysfsdir, const char *devicepath,
const char *unique_id, const char *hostname)
{
char *unique_id_path = NULL;
char *link_path = NULL;
char *spot;
int ret = -1;
int fd = -1;
if (virAsprintfQuiet(&unique_id_path, "%s/devices/pci0000:00/%s/unique_id",
fakesysfsdir, devicepath) < 0 ||
virAsprintfQuiet(&link_path, "%s/class/scsi_host/%s",
fakesysfsdir, hostname) < 0) {
fprintf(stderr, "Out of memory\n");
goto cleanup;
}
/* Rather than create path & file, temporarily snip off the file to
* create the path
*/
if (!(spot = strstr(unique_id_path, "unique_id"))) {
fprintf(stderr, "Did not find unique_id in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (virFileMakePathWithMode(unique_id_path, 0755) < 0) {
fprintf(stderr, "Unable to make path to '%s'\n", unique_id_path);
goto cleanup;
}
*spot = '/';
/* Rather than create path & file, temporarily snip off the file to
* create the path
*/
if (!(spot = strstr(link_path, hostname))) {
fprintf(stderr, "Did not find hostname in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (virFileMakePathWithMode(link_path, 0755) < 0) {
fprintf(stderr, "Unable to make path to '%s'\n", link_path);
goto cleanup;
}
*spot = '/';
if ((fd = open(unique_id_path, O_CREAT|O_WRONLY, 0444)) < 0) {
fprintf(stderr, "Unable to create '%s'\n", unique_id_path);
goto cleanup;
}
if (safewrite(fd, unique_id, 1) != 1) {
fprintf(stderr, "Unable to write '%s'\n", unique_id);
goto cleanup;
}
VIR_DEBUG("Created unique_id '%s'", unique_id_path);
/* The link is to the path not the file - so remove the file */
if (!(spot = strstr(unique_id_path, "unique_id"))) {
fprintf(stderr, "Did not find unique_id in path\n");
goto cleanup;
}
spot--;
*spot = '\0';
if (symlink(unique_id_path, link_path) < 0) {
fprintf(stderr, "Unable to create symlink '%s' to '%s'\n",
link_path, unique_id_path);
goto cleanup;
}
VIR_DEBUG("Created symlink '%s'", link_path);
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
VIR_FREE(unique_id_path);
VIR_FREE(link_path);
return ret;
}
static int
init_scsihost_sysfs(const char *fakesysfsdir)
{
int ret = 0;
if (create_scsihost(fakesysfsdir,
"0000:00:1f.1/ata1/host0/scsi_host/host0",
"1", "host0") < 0 ||
create_scsihost(fakesysfsdir,
"0000:00:1f.1/ata2/host1/scsi_host/host1",
"2", "host1") < 0 ||
create_scsihost(fakesysfsdir,
"0000:00:1f.2/ata1/host0/scsi_host/host0",
"1", "host2") < 0 ||
create_scsihost(fakesysfsdir,
"0000:00:1f.2/ata2/host1/scsi_host/host1",
"2", "host3") < 0)
ret = -1;
return ret;
}
/* Test virReadSCSIUniqueId */
static int
testVirReadSCSIUniqueId(const void *data ATTRIBUTE_UNUSED)
{
int hostnum, unique_id;
for (hostnum = 0; hostnum < 4; hostnum++) {
if (virReadSCSIUniqueId(TEST_SCSIHOST_CLASS_PATH,
hostnum, &unique_id) < 0) {
fprintf(stderr, "Failed to read hostnum=%d unique_id\n", hostnum);
return -1;
}
/* host0 and host2 have unique_id == 1
* host1 and host3 have unique_id == 2
*/
if ((hostnum == 0 || hostnum == 2) && unique_id != 1) {
fprintf(stderr, "The unique_id='%d' for hostnum=%d is wrong\n",
unique_id, hostnum);
return -1;
} else if ((hostnum == 1 || hostnum == 3) && unique_id != 2) {
fprintf(stderr, "The unique_id='%d' for hostnum=%d is wrong\n",
unique_id, hostnum);
return -1;
}
}
return 0;
}
/* Test virFindSCSIHostByPCI */
static int
testVirFindSCSIHostByPCI(const void *data ATTRIBUTE_UNUSED)
{
unsigned int unique_id1 = 1;
unsigned int unique_id2 = 2;
const char *pci_addr1 = "0000:00:1f.1";
const char *pci_addr2 = "0000:00:1f.2";
char *path_addr = NULL;
char *ret_host = NULL;
int ret = -1;
if (virAsprintf(&path_addr, "%s/%s", abs_srcdir,
"sysfs/class/scsi_host") < 0)
goto cleanup;
if (!(ret_host = virFindSCSIHostByPCI(TEST_SCSIHOST_CLASS_PATH,
pci_addr1, unique_id1)) ||
STRNEQ(ret_host, "host0"))
goto cleanup;
VIR_FREE(ret_host);
if (!(ret_host = virFindSCSIHostByPCI(TEST_SCSIHOST_CLASS_PATH,
pci_addr1, unique_id2)) ||
STRNEQ(ret_host, "host1"))
goto cleanup;
VIR_FREE(ret_host);
if (!(ret_host = virFindSCSIHostByPCI(TEST_SCSIHOST_CLASS_PATH,
pci_addr2, unique_id1)) ||
STRNEQ(ret_host, "host2"))
goto cleanup;
VIR_FREE(ret_host);
if (!(ret_host = virFindSCSIHostByPCI(TEST_SCSIHOST_CLASS_PATH,
pci_addr2, unique_id2)) ||
STRNEQ(ret_host, "host3"))
goto cleanup;
VIR_FREE(ret_host);
ret = 0;
cleanup:
VIR_FREE(ret_host);
VIR_FREE(path_addr);
return ret;
}
# define FAKEROOTDIRTEMPLATE abs_builddir "/fakerootdir-XXXXXX"
static int
mymain(void)
{
int ret = -1;
char *fakerootdir = NULL;
char *fakesysfsdir = NULL;
if (VIR_STRDUP_QUIET(fakerootdir, FAKEROOTDIRTEMPLATE) < 0) {
fprintf(stderr, "Out of memory\n");
goto cleanup;
}
if (!mkdtemp(fakerootdir)) {
fprintf(stderr, "Cannot create fakerootdir");
goto cleanup;
}
if (virAsprintfQuiet(&fakesysfsdir, "%s/sys", fakerootdir) < 0) {
fprintf(stderr, "Out of memory\n");
goto cleanup;
}
if (init_scsihost_sysfs(fakesysfsdir) < 0) {
fprintf(stderr, "Failed to create fakesysfs='%s'\n", fakesysfsdir);
goto cleanup;
}
if (virAsprintfQuiet(&scsihost_class_path, "%s/class/scsi_host",
fakesysfsdir) < 0) {
fprintf(stderr, "Out of memory\n");
goto cleanup;
}
VIR_DEBUG("Reading from '%s'", scsihost_class_path);
if (virtTestRun("testVirReadSCSIUniqueId",
testVirReadSCSIUniqueId, NULL) < 0) {
ret = -1;
goto cleanup;
}
if (virtTestRun("testVirFindSCSIHostByPCI",
testVirFindSCSIHostByPCI, NULL) < 0) {
ret = -1;
goto cleanup;
}
ret = 0;
cleanup:
if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
virFileDeleteTree(fakerootdir);
VIR_FREE(fakerootdir);
VIR_FREE(fakesysfsdir);
VIR_FREE(scsihost_class_path);
return ret;
}
VIRT_TEST_MAIN(mymain)
#else
int
main(void)
{
return EXIT_AM_SKIP;
}
#endif
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