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| author | Daniel P. Berrange <berrange@redhat.com> | 2011-10-12 19:11:24 +0530 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-15 15:30:26 +0530 |
| commit | a2f507d9089f57525d58cd0852c6bea6720074e5 (patch) | |
| tree | 32db2b25701a42d5f70dfe61b9b0ba68b7eff3df /hw/9pfs/virtio-9p-device.c | |
| parent | ea60f31593cd7d16c6e557e8cf4caf1d1e1680b6 (diff) | |
| download | qemu-a2f507d9089f57525d58cd0852c6bea6720074e5.zip qemu-a2f507d9089f57525d58cd0852c6bea6720074e5.tar.gz qemu-a2f507d9089f57525d58cd0852c6bea6720074e5.tar.bz2 | |
hw/9pfs: Ensure an error is reported to user if 9pfs mount tag is too long
If the 9pfs mount tag is longer than MAX_TAG_LEN bytes, rather than
silently truncating the tag which will likely break the guest OS,
report an immediate error and exit QEMU
* hw/9pfs/virtio-9p-device.c: Report error & exit if mount tag is
too long
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'hw/9pfs/virtio-9p-device.c')
| -rw-r--r-- | hw/9pfs/virtio-9p-device.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c index 403eed0..4fcde50 100644 --- a/hw/9pfs/virtio-9p-device.c +++ b/hw/9pfs/virtio-9p-device.c @@ -119,7 +119,9 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) s->ctx.fs_root = g_strdup(fse->path); len = strlen(conf->tag); if (len > MAX_TAG_LEN) { - len = MAX_TAG_LEN; + fprintf(stderr, "mount tag '%s' (%d bytes) is longer than " + "maximum (%d bytes)", conf->tag, len, MAX_TAG_LEN); + exit(1); } /* s->tag is non-NULL terminated string */ s->tag = g_malloc(len); |