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migration: size_t'ify some of qemu-file

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This is a start on using size_t more in qemu-file and friends;
it fixes up QEMUFilePutBufferFunc and QEMUFileGetBufferFunc
to take size_t lengths and return ssize_t return values (like read(2))
and fixes up all the different implementations of them.

Note that I've not yet followed this deeply into bdrv_ implementations.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1439463094-5394-5-git-send-email-dgilbert@redhat.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-08-13 11:51:33 +01:00 • committed by Amit Shah
parent c50766f5a9
commit a202a4c001
7 changed files with 30 additions and 24 deletions
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7
migration/qemu-file-buf.c
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@ -372,7 +372,8 @@ typedef struct QEMUBuffer {
bool qsb_allocated;
} QEMUBuffer;
static int buf_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
static ssize_t buf_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
size_t size)
{
QEMUBuffer *s = opaque;
ssize_t len = qsb_get_length(s->qsb) - pos;
@ -387,8 +388,8 @@ static int buf_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
return qsb_get_buffer(s->qsb, pos, len, buf);
}
static int buf_put_buffer(void *opaque, const uint8_t *buf,
int64_t pos, int size)
static ssize_t buf_put_buffer(void *opaque, const uint8_t *buf,
int64_t pos, size_t size)
{
QEMUBuffer *s = opaque;