From: Paolo Bonzini <pbonzini@redhat.com>
To: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Cc: kwolf@redhat.com, stefanha@gmail.com, aliguori@us.ibm.com,
Eric Blake <eblake@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 2/6] libqblock public type defines
Date: Tue, 04 Sep 2012 09:37:11 +0200 [thread overview]
Message-ID: <5045AFA7.4000102@redhat.com> (raw)
In-Reply-To: <5045A95F.3050908@linux.vnet.ibm.com>
Il 04/09/2012 09:10, Wenchao Xia ha scritto:
>
>>> +
>>> +/**
>>> + * QBlockInfoImageStatic: information about the block image.
>>> + *
>>> + * @loc: location info.
>>> + * @fmt_type: format type.
>>> + * @virt_size: virtual size in bytes.
>>> + * @backing_loc: backing file location, its type is QB_PROT_NONE if
>>> not exist.
>>> + * @allocated_size: allocated size in bytes, negative if not available.
>>
>> Reading this...
>>
>>> + * @encrypt: encrypt flag.
>>> + */
>>> +struct QBlockInfoImageStatic {
>>> + struct QBlockOptionLoc loc;
>>> + enum QBlockFormat fmt_type;
>>> + size_t virt_size;
>>> + /* advance info */
>>> + struct QBlockOptionLoc backing_loc;
>>> + size_t allocated_size;
>>
>> ...negative is not possible for size_t. Did you mean ssize_t?
>>
> you are right.
size_t is a *pointer* size. It is 32-bits on
Use int64_t or uint64_t always when dealing with file sizes and offsets.
In particular, do not use off_t, it is a recipe for pain and ABI
incompatibilities.
Paolo
next prev parent reply other threads:[~2012-09-04 7:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-03 9:18 [Qemu-devel] [PATCH 0/6] libqblock, qemu block layer library Wenchao Xia
2012-09-03 9:18 ` [Qemu-devel] [PATCH 1/6] libqblock APIs Wenchao Xia
2012-09-03 13:18 ` Paolo Bonzini
2012-09-04 3:15 ` Wenchao Xia
2012-09-04 6:50 ` Paolo Bonzini
2012-09-04 9:05 ` Wenchao Xia
2012-09-10 8:10 ` Wenchao Xia
2012-09-03 13:56 ` Eric Blake
2012-09-03 14:05 ` Paolo Bonzini
2012-09-04 7:05 ` Wenchao Xia
2012-09-04 7:29 ` Paolo Bonzini
2012-09-04 6:42 ` Wenchao Xia
2012-09-04 11:35 ` Eric Blake
2012-09-04 13:47 ` Paolo Bonzini
2012-09-03 19:22 ` Blue Swirl
2012-09-03 9:18 ` [Qemu-devel] [PATCH 2/6] libqblock public type defines Wenchao Xia
2012-09-03 13:13 ` Paolo Bonzini
2012-09-04 2:00 ` Wenchao Xia
2012-09-03 14:20 ` Eric Blake
2012-09-04 7:10 ` Wenchao Xia
2012-09-04 7:37 ` Paolo Bonzini [this message]
2012-09-03 19:31 ` Blue Swirl
2012-09-04 7:19 ` Wenchao Xia
2012-09-04 7:38 ` Paolo Bonzini
2012-09-04 19:22 ` Blue Swirl
2012-09-10 8:22 ` Wenchao Xia
2012-09-03 9:18 ` [Qemu-devel] [PATCH 3/6] libqblock error handling Wenchao Xia
2012-09-03 14:22 ` Eric Blake
2012-09-04 7:12 ` Wenchao Xia
2012-09-10 8:20 ` Wenchao Xia
2012-09-03 9:18 ` [Qemu-devel] [PATCH 4/6] libqblock internal used functions Wenchao Xia
2012-09-03 13:18 ` Paolo Bonzini
2012-09-04 3:19 ` Wenchao Xia
2012-09-03 14:28 ` Eric Blake
2012-09-03 15:18 ` Paolo Bonzini
2012-09-04 7:15 ` Wenchao Xia
2012-09-04 7:38 ` Paolo Bonzini
2012-09-04 11:38 ` Eric Blake
2012-09-04 13:49 ` Paolo Bonzini
2012-09-04 13:51 ` Kevin Wolf
2012-09-10 8:23 ` Wenchao Xia
2012-09-03 9:18 ` [Qemu-devel] [PATCH 5/6] libqblock test example Wenchao Xia
2012-09-03 19:27 ` Blue Swirl
2012-09-03 9:18 ` [Qemu-devel] [PATCH 6/6] libqblock building system Wenchao Xia
2012-09-03 13:10 ` [Qemu-devel] xbzrle migration cache size advise for high memory changes workload ? Alexandre DERUMIER
2012-09-04 14:05 ` Orit Wasserman
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