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qemuDomainBuildNamespace: Handle special file mount points

Browse Source 
https://bugzilla.redhat.com/show_bug.cgi?id=1459592

In 290a00e41d I've tried to fix the process of building a
qemu namespace when dealing with file mount points. What I
haven't realized then is that we might be dealing not with just
regular files but also special files (like sockets). Indeed, try
the following:

1) socat unix-listen:/tmp/soket stdio
2) touch /dev/socket
3) mount --bind /tmp/socket /dev/socket
4) virsh start anyDomain

Problem with my previous approach is that I wasn't creating the
temporary location (where mount points under /dev are moved) for
anything but directories and regular files.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit is contained in:
Michal Privoznik 2017-06-20 17:35:54 +02:00
parent 37ef8763c4
commit 7154917908
1 changed files with 4 additions and 2 deletions
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6
src/qemu/qemu_domain.c
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@ -8357,9 +8357,11 @@ qemuDomainBuildNamespace(virQEMUDriverConfigPtr cfg,
goto cleanup;
}
/* At this point, devMountsPath is either a regular file or a directory. */
/* At this point, devMountsPath is either:
* a file (regular or special), or
* a directory. */
if ((S_ISDIR(sb.st_mode) && virFileMakePath(devMountsSavePath[i]) < 0) ||
(S_ISREG(sb.st_mode) && virFileTouch(devMountsSavePath[i], sb.st_mode) < 0)) {
(!S_ISDIR(sb.st_mode) && virFileTouch(devMountsSavePath[i], sb.st_mode) < 0)) {
virReportSystemError(errno,
_("Failed to create %s"),
devMountsSavePath[i]);