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qemuDomainStorageSourceValidateDepth: Define chain depth as macro

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The magic constant will be used in one more place.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2021-03-22 17:03:47 +01:00
parent 51221af10e
commit dc03aed6a1
1 changed files with 6 additions and 3 deletions
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9
src/qemu/qemu_domain.c
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@ -7462,6 +7462,8 @@ qemuDomainStorageAlias(const char *device, int depth)
}
#define QEMU_DOMAIN_STORAGE_SOURCE_CHAIN_MAX_DEPTH 200
/**
* qemuDomainStorageSourceValidateDepth:
* @src: storage source chain to validate
@ -7474,8 +7476,9 @@ qemuDomainStorageAlias(const char *device, int depth)
* when formatted to the XML.
*
* This function validates that the storage source chain starting @src is at
* most 200 layers deep. @add modifies the calculated value to offset the number
* to allow checking cases when new layers are going to be added to the chain.
* most QEMU_DOMAIN_STORAGE_SOURCE_CHAIN_MAX_DEPTH layers deep. @add modifies
* the calculated value to offset the number to allow checking cases when new
* layers are going to be added to the chain.
*
* Returns 0 on success and -1 if the chain is too deep. Error is reported.
*/
@ -7492,7 +7495,7 @@ qemuDomainStorageSourceValidateDepth(virStorageSourcePtr src,
nlayers += add;
if (nlayers > 200) {
if (nlayers > QEMU_DOMAIN_STORAGE_SOURCE_CHAIN_MAX_DEPTH) {
if (diskdst)
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("backing chains more than 200 layers deep are not "