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scsi_host: Introduce virFindSCSIHostByPCI

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Introduce a new function to parse the provided scsi_host parent address
and unique_id value in order to find the /sys/class/scsi_host directory
which will allow a stable SCSI host address

Add a test to scsihosttest to lookup the host# name by using the PCI address
and unique_id value
This commit is contained in:
John Ferlan
2014-07-21 12:55:11 -04:00
parent f3271f4cb3
commit ef48a1b613
5 changed files with 164 additions and 1 deletions
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tests/scsihosttest.c
+54
View File
@@ -196,6 +196,54 @@ testVirReadSCSIUniqueId(const void *data ATTRIBUTE_UNUSED)
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 FAKESYSFSDIRTEMPLATE abs_builddir "/fakesysfsdir-XXXXXX"
static int
@@ -234,6 +282,12 @@ mymain(void)
goto cleanup;
}
if (virtTestRun("testVirFindSCSIHostByPCI",
testVirFindSCSIHostByPCI, NULL) < 0) {
ret = -1;
goto cleanup;
}
ret = 0;
cleanup: