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qemu: introduce CHECK_STREQ_NULLABLE in qemuDomainDiskChangeSupported

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A macro for comparing string fields of the disk.

https://bugzilla.redhat.com/show_bug.cgi?id=1601677

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
This commit is contained in:
Ján Tomko 2019-03-28 14:46:58 +01:00
parent 21a9cb986c
commit 8535a298a2
1 changed files with 13 additions and 0 deletions
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13
src/qemu/qemu_domain.c
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@ -9321,6 +9321,18 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
} \
} while (0)
#define CHECK_STREQ_NULLABLE(field, field_name) \
do { \
if (!disk->field) \
break; \
if (STRNEQ_NULLABLE(disk->field, orig_disk->field)) { \
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, \
_("cannot modify field '%s' of the disk"), \
field_name); \
return false; \
} \
} while (0)
CHECK_EQ(device, "device", false);
CHECK_EQ(bus, "bus", false);
if (STRNEQ(disk->dst, orig_disk->dst)) {
@ -9468,6 +9480,7 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
}
#undef CHECK_EQ
#undef CHECK_STREQ_NULLABLE
return true;
}