@@ -2327,39 +2327,37 @@ static int64_t raw_getlength(BlockDriverState *bs)
again:
#endif
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
+ size = 0;
#ifdef DIOCGMEDIASIZE
- if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
-#elif defined(DIOCGPART)
- {
- struct partinfo pi;
- if (ioctl(fd, DIOCGPART, &pi) == 0)
- size = pi.media_size;
- else
- size = 0;
+ if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size)) {
+ size = 0;
+ }
+#endif
+#ifdef DIOCGPART
+ if (size == 0) {
+ struct partinfo pi;
+ if (ioctl(fd, DIOCGPART, &pi) == 0) {
+ size = pi.media_size;
+ }
}
- if (size == 0)
#endif
#if defined(__APPLE__) && defined(__MACH__)
- {
+ if (size == 0) {
uint64_t sectors = 0;
uint32_t sector_size = 0;
if (ioctl(fd, DKIOCGETBLOCKCOUNT, §ors) == 0
&& ioctl(fd, DKIOCGETBLOCKSIZE, §or_size) == 0) {
size = sectors * sector_size;
- } else {
- size = lseek(fd, 0LL, SEEK_END);
- if (size < 0) {
- return -errno;
- }
}
}
-#else
- size = lseek(fd, 0LL, SEEK_END);
+#endif
+ if (size == 0) {
+ size = lseek(fd, 0LL, SEEK_END);
+ }
if (size < 0) {
return -errno;
}
-#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
switch(s->type) {
case FTYPE_CD:
Try all the possible ioctls for disk size as long as they are supported, to keep the #if ladder simple. Extracted and cleaned up from a patch by Joelle van Dyne and Warner Losh. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- block/file-posix.c | 34 ++++++++++++++++------------------ 1 file changed, 16 insertions(+), 18 deletions(-)