[libvirt] [PATCH 4/8] qemuDomainCreateDeviceRecursive: Fail on unsupported file type
John Ferlan
jferlan at redhat.com
Tue Jun 27 21:55:24 UTC 2017
On 06/22/2017 12:18 PM, Michal Privoznik wrote:
> Currently, we silently assume that file we are creating in the
> namespace is either a link or a device (character or block one).
> This is not always the case. Therefore instead of doing something
> wrong, claim about unsupported file type.
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
> src/qemu/qemu_domain.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
Your call - should the "%o" be a "0%o" (see virStoragePoolDefFormatBuf
and virFileMakePathHelper)? I think that's the more "proper" formatting
style used...
Reviewed-by: John Ferlan <jferlan at redhat.com>
John
-
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index 286d60761..e6fb041de 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -7707,6 +7707,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
> struct stat sb;
> int ret = -1;
> bool isLink = false;
> + bool isDev = false;
> bool create = false;
> #ifdef WITH_SELINUX
> char *tcon = NULL;
> @@ -7729,6 +7730,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
> }
>
> isLink = S_ISLNK(sb.st_mode);
> + isDev = S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode);
>
> /* Here, @device might be whatever path in the system. We
> * should create the path in the namespace iff it's "/dev"
> @@ -7828,7 +7830,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
> if (qemuDomainCreateDeviceRecursive(target, data,
> allow_noent, ttl - 1) < 0)
> goto cleanup;
> - } else {
> + } else if (isDev) {
> if (create &&
> mknod(devicePath, sb.st_mode, sb.st_rdev) < 0) {
> if (errno == EEXIST) {
> @@ -7850,6 +7852,11 @@ qemuDomainCreateDeviceRecursive(const char *device,
> devicePath);
> goto cleanup;
> }
> + } else {
> + virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
> + _("unsupported device type %s %o"),
^^
e.g. s/%o/0%o
(that's a zero not a capital Oh)
> + device, (int) sb.st_mode);
> + goto cleanup;
> }
>
> if (!create) {
>
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