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bhyve: get mediasize for character devices when resizing virtio-blk

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Reviewed by:	imp, allanjude, jhb
Differential Revision:	https://reviews.freebsd.org/D33403
This commit is contained in:
Robert Wing 2022-01-18 11:26:49 -09:00
parent 89889ab470
commit ae9ea22e14
1 changed files with 12 additions and 2 deletions
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14
usr.sbin/bhyve/block_if.c
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@ -667,14 +667,24 @@ blockif_resized(int fd, enum ev_type type, void *arg)
{
struct blockif_ctxt *bc;
struct stat sb;
off_t mediasize;
if (fstat(fd, &sb) != 0)
return;
if (S_ISCHR(sb.st_mode)) {
if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) < 0) {
EPRINTLN("blockif_resized: get mediasize failed: %s",
strerror(errno));
return;
}
} else
mediasize = sb.st_size;
bc = arg;
pthread_mutex_lock(&bc->bc_mtx);
if (sb.st_size != bc->bc_size) {
bc->bc_size = sb.st_size;
if (mediasize != bc->bc_size) {
bc->bc_size = mediasize;
bc->bc_resize_cb(bc, bc->bc_resize_cb_arg, bc->bc_size);
}
pthread_mutex_unlock(&bc->bc_mtx);