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block/file-posix.c: Fix unused variable warning on OpenBSD

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On OpenBSD none of the ioctls probe_logical_blocksize() tries
exist, so the variable sector_size is unused. Refactor the
code to avoid this (and reduce the duplicated code).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1490279788-12995-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Peter Maydell 2017-03-23 14:36:28 +00:00 committed by Max Reitz
parent e5bcf967fb
commit 700f9ce0f9
1 changed files with 14 additions and 14 deletions
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28
block/file-posix.c
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@ -220,28 +220,28 @@ static int probe_logical_blocksize(int fd, unsigned int *sector_size_p)
{
unsigned int sector_size;
bool success = false;
int i;
errno = ENOTSUP;
/* Try a few ioctls to get the right size */
static const unsigned long ioctl_list[] = {
#ifdef BLKSSZGET
if (ioctl(fd, BLKSSZGET, &sector_size) >= 0) {
*sector_size_p = sector_size;
success = true;
}
BLKSSZGET,
#endif
#ifdef DKIOCGETBLOCKSIZE
if (ioctl(fd, DKIOCGETBLOCKSIZE, &sector_size) >= 0) {
*sector_size_p = sector_size;
success = true;
}
DKIOCGETBLOCKSIZE,
#endif
#ifdef DIOCGSECTORSIZE
if (ioctl(fd, DIOCGSECTORSIZE, &sector_size) >= 0) {
*sector_size_p = sector_size;
success = true;
}
DIOCGSECTORSIZE,
#endif
};
/* Try a few ioctls to get the right size */
for (i = 0; i < (int)ARRAY_SIZE(ioctl_list); i++) {
if (ioctl(fd, ioctl_list[i], &sector_size) >= 0) {
*sector_size_p = sector_size;
success = true;
}
}
return success ? 0 : -errno;
}