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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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11
migration/qemu-file-stdio.c
View file

@ -37,11 +37,11 @@ static int stdio_get_fd(void *opaque)
return fileno(s->stdio_file);
}
static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos,
int size)
static ssize_t stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos,
size_t size)
{
QEMUFileStdio *s = opaque;
int res;
size_t res;
res = fwrite(buf, 1, size, s->stdio_file);
@ -51,11 +51,12 @@ static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos,
return res;
}
static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
static ssize_t stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
size_t size)
{
QEMUFileStdio *s = opaque;
FILE *fp = s->stdio_file;
int bytes;
ssize_t bytes;
for (;;) {
clearerr(fp);