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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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6
migration/qemu-file-unix.c
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@ -54,7 +54,8 @@ static int socket_get_fd(void *opaque)
return s->fd;
}
static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
static ssize_t socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
size_t size)
{
QEMUFileSocket *s = opaque;
ssize_t len;
@ -138,7 +139,8 @@ static ssize_t unix_writev_buffer(void *opaque, struct iovec *iov, int iovcnt,
return total;
}
static int unix_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
static ssize_t unix_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
size_t size)
{
QEMUFileSocket *s = opaque;
ssize_t len;