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storage_util: Drop getDeviceType()

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The sole purpose of getDeviceType() is to parse a file that
contains one integer (and a newline character). Well, we already
have a function for that: virFileReadValueInt(). Use the latter
and drop the former.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2023-09-05 09:14:11 +02:00
parent abecd6633e
commit 2dd1b04014
1 changed files with 15 additions and 60 deletions
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69
src/storage/storage_util.c
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@ -3847,62 +3847,6 @@ getBlockDevice(uint32_t host,
}
/* Function to check if the type file in the given sysfs_path is a
* Direct-Access device (i.e. type 0). Return -1 on failure, type of
* the device otherwise.
*/
static int
getDeviceType(uint32_t host,
uint32_t bus,
uint32_t target,
uint32_t lun,
int *type)
{
char typestr[3];
char *gottype, *p;
FILE *typefile;
g_autofree char *type_path = NULL;
type_path = g_strdup_printf("/sys/bus/scsi/devices/%u:%u:%u:%u/type", host,
bus, target, lun);
typefile = fopen(type_path, "r");
if (typefile == NULL) {
virReportSystemError(errno,
_("Could not find typefile '%1$s'"),
type_path);
/* there was no type file; that doesn't seem right */
return -1;
}
gottype = fgets(typestr, 3, typefile);
VIR_FORCE_FCLOSE(typefile);
if (gottype == NULL) {
virReportSystemError(errno,
_("Could not read typefile '%1$s'"),
type_path);
/* we couldn't read the type file; have to give up */
return -1;
}
/* we don't actually care about p, but if you pass NULL and the last
* character is not \0, virStrToLong_i complains
*/
if (virStrToLong_i(typestr, &p, 10, type) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Device type '%1$s' is not an integer"),
typestr);
/* Hm, type wasn't an integer; seems strange */
return -1;
}
VIR_DEBUG("Device type is %d", *type);
return 0;
}
/*
* Process a Logical Unit entry from the scsi host device directory
*
@ -3921,18 +3865,29 @@ processLU(virStoragePoolObj *pool,
{
int retval = -1;
int device_type;
int rc;
g_autofree char *block_device = NULL;
VIR_DEBUG("Processing LU %u:%u:%u:%u",
host, bus, target, lun);
if (getDeviceType(host, bus, target, lun, &device_type) < 0) {
if ((rc = virFileReadValueInt(&device_type,
"/sys/bus/scsi/devices/%u:%u:%u:%u/type",
host, bus, target, lun)) < 0) {
/* Report an error if file doesn't exist. Appropriate
* error was reported otherwise. */
if (rc == -2) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to determine if %1$u:%2$u:%3$u:%4$u is a Direct-Access LUN"),
host, bus, target, lun);
}
return -1;
}
VIR_DEBUG("Device type is %d", device_type);
/* We don't create volumes for devices other than disk and cdrom
* devices, but finding a device that isn't one of those types
* isn't an error, either. */