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qemuSnapshotPrepareDiskExternal: Avoid condition squashing

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Separate the 'else if' branches into nested conditions so that it's more
obvious when we'll be adding additional checks later.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2021-06-16 14:57:44 +02:00
parent 006821a809
commit a96cc845d7
1 changed files with 11 additions and 7 deletions
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8
src/qemu/qemu_snapshot.c
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@ -582,13 +582,16 @@ qemuSnapshotPrepareDiskExternal(virDomainObj *vm,
_("unable to stat for disk %s: %s"),
snapdisk->name, snapdisk->src->path);
return -1;
} else if (reuse) {
}
if (reuse) {
virReportSystemError(err,
_("missing existing file for disk %s: %s"),
snapdisk->name, snapdisk->src->path);
return -1;
}
} else if (!S_ISBLK(st.st_mode) && st.st_size && !reuse) {
} else {
if (!S_ISBLK(st.st_mode) && st.st_size && !reuse) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("external snapshot file for disk %s already "
"exists and is not a block device: %s"),
@ -596,6 +599,7 @@ qemuSnapshotPrepareDiskExternal(virDomainObj *vm,
return -1;
}
}
}
return 0;
}