[libvirt] [PATCH 8/8] qemu ns: Create chardev backends more frequently
Currently, the only type of chardev that we create the backend
for in the namespace is type='dev'. This is not enough, other
backends might have files under /dev too. For instance channels
might have a unix socket under /dev (well, bind mounted under
/dev from a different place).
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/qemu/qemu_domain.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 51779c535..65eec26dd 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -7732,7 +7732,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
isLink = S_ISLNK(sb.st_mode);
isDev = S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode);
- isReg = S_ISREG(sb.st_mode);
+ isReg = S_ISREG(sb.st_mode) || S_ISFIFO(sb.st_mode) || S_ISSOCK(sb.st_mode);
/* Here, @device might be whatever path in the system. We
* should create the path in the namespace iff it's "/dev"
@@ -8129,11 +8129,17 @@ qemuDomainSetupChardev(virDomainDefPtr def ATTRIBUTE_UNUSED,
void *opaque)
{
const struct qemuDomainCreateDeviceData *data = opaque;
+ const char *path = NULL;
- if (dev->source->type != VIR_DOMAIN_CHR_TYPE_DEV)
+ if (!(path = virDomainChrSourceDefPath(dev->source)))
return 0;
- return qemuDomainCreateDevice(dev->source->data.file.path, data, false);
+ /* Socket created by qemu. It doesn't exist upfront. */
+ if (dev->source->type == VIR_DOMAIN_CHR_TYPE_UNIX &&
+ dev->source->data.nix.listen)
+ return 0;
+
+ return qemuDomainCreateDevice(path, data, true);
}
@@ -8531,7 +8537,7 @@ qemuDomainAttachDeviceMknodHelper(pid_t pid ATTRIBUTE_UNUSED,
bool delDevice = false;
bool isLink = S_ISLNK(data->sb.st_mode);
bool isDev = S_ISCHR(data->sb.st_mode) || S_ISBLK(data->sb.st_mode);
- bool isReg = S_ISREG(data->sb.st_mode);
+ bool isReg = S_ISREG(data->sb.st_mode) || S_ISFIFO(data->sb.st_mode) ||
S_ISSOCK(data->sb.st_mode);
qemuSecurityPostFork(data->driver->securityManager);
@@ -8576,7 +8582,7 @@ qemuDomainAttachDeviceMknodHelper(pid_t pid ATTRIBUTE_UNUSED,
* as its backing chain. This might however clash here.
* Therefore do the cleanup here. */
if (umount(data->file) < 0 &&
- errno != ENOENT) {
+ errno != ENOENT && errno != EINVAL) {
virReportSystemError(errno,
_("Unable to umount %s"),
data->file);
@@ -8685,7 +8691,7 @@ qemuDomainAttachDeviceMknodRecursive(virQEMUDriverPtr driver,
}
isLink = S_ISLNK(data.sb.st_mode);
- isReg = S_ISREG(data.sb.st_mode);
+ isReg = S_ISREG(data.sb.st_mode) || S_ISFIFO(data.sb.st_mode) ||
S_ISSOCK(data.sb.st_mode);
if (isReg && STRPREFIX(file, DEVPREFIX)) {
cfg = virQEMUDriverGetConfig(driver);
@@ -9077,10 +9083,13 @@ qemuDomainNamespaceSetupChardev(virQEMUDriverPtr driver,
if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT))
return 0;
- if (chr->source->type != VIR_DOMAIN_CHR_TYPE_DEV)
+ if (!(path = virDomainChrSourceDefPath(chr->source)))
return 0;
- path = chr->source->data.file.path;
+ /* Socket created by qemu. It doesn't exist upfront. */
+ if (chr->source->type == VIR_DOMAIN_CHR_TYPE_UNIX &&
+ chr->source->data.nix.listen)
+ return 0;
cfg = virQEMUDriverGetConfig(driver);
if (qemuDomainGetPreservedMounts(cfg, vm,
--
2.13.0