[libvirt] [PATCH] qemu: De-duplicate some path definitions
Michal Privoznik
mprivozn at redhat.com
Tue Jun 25 11:38:33 UTC 2019
There are some paths (e.g. /dev/vfio/vfio or /dev/mapper/control)
which are defined in qemu_domain.c and then in qemu_cgroup.c
again. This is suboptimal. Lets move paths into qemu_domain.h and
drop duplicate definitions.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/qemu/qemu_cgroup.c | 13 ++++++-------
src/qemu/qemu_domain.c | 30 +++++++++++-------------------
src/qemu/qemu_domain.h | 7 +++++++
src/qemu/qemu_hostdev.c | 5 +++--
4 files changed, 27 insertions(+), 28 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index ca76c4fdfa..19ca60905a 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -113,8 +113,6 @@ qemuSetupImagePathCgroup(virDomainObjPtr vm,
}
-#define DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
-
static int
qemuSetupImageCgroupInternal(virDomainObjPtr vm,
virStorageSourcePtr src,
@@ -127,8 +125,8 @@ qemuSetupImageCgroupInternal(virDomainObjPtr vm,
}
if (virStoragePRDefIsManaged(src->pr) &&
- virFileExists(DEVICE_MAPPER_CONTROL_PATH) &&
- qemuSetupImagePathCgroup(vm, DEVICE_MAPPER_CONTROL_PATH, false) < 0)
+ virFileExists(QEMU_DEVICE_MAPPER_CONTROL_PATH) &&
+ qemuSetupImagePathCgroup(vm, QEMU_DEVICE_MAPPER_CONTROL_PATH, false) < 0)
return -1;
return qemuSetupImagePathCgroup(vm, src->path, src->readonly || forceReadonly);
@@ -162,7 +160,7 @@ qemuTeardownImageCgroup(virDomainObjPtr vm,
return 0;
}
- if (virFileExists(DEVICE_MAPPER_CONTROL_PATH)) {
+ if (virFileExists(QEMU_DEVICE_MAPPER_CONTROL_PATH)) {
for (i = 0; i < vm->def->ndisks; i++) {
virStorageSourcePtr diskSrc = vm->def->disks[i]->src;
@@ -176,9 +174,10 @@ qemuTeardownImageCgroup(virDomainObjPtr vm,
if (i == vm->def->ndisks) {
VIR_DEBUG("Disabling device mapper control");
ret = virCgroupDenyDevicePath(priv->cgroup,
- DEVICE_MAPPER_CONTROL_PATH, perms, true);
+ QEMU_DEVICE_MAPPER_CONTROL_PATH,
+ perms, true);
virDomainAuditCgroupPath(vm, priv->cgroup, "deny",
- DEVICE_MAPPER_CONTROL_PATH,
+ QEMU_DEVICE_MAPPER_CONTROL_PATH,
virCgroupGetDevicePermsString(perms), ret);
if (ret < 0)
return ret;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 0f1335de9c..7e6a9764c5 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -117,14 +117,6 @@ VIR_ENUM_IMPL(qemuDomainNamespace,
"mount",
);
-
-#define PROC_MOUNTS "/proc/mounts"
-#define DEVPREFIX "/dev/"
-#define DEV_VFIO "/dev/vfio/vfio"
-#define DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
-#define DEV_SEV "/dev/sev"
-
-
struct _qemuDomainLogContext {
virObject parent;
@@ -11872,7 +11864,7 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
tmpPerms[0] = perm;
if (includeVFIO) {
- if (VIR_STRDUP(tmpPaths[1], DEV_VFIO) < 0)
+ if (VIR_STRDUP(tmpPaths[1], QEMU_DEV_VFIO) < 0)
goto cleanup;
tmpPerms[1] = VIR_CGROUP_DEVICE_RW;
}
@@ -11919,7 +11911,7 @@ qemuDomainGetPreservedMountPath(virQEMUDriverConfigPtr cfg,
{
char *path = NULL;
char *tmp;
- const char *suffix = mountpoint + strlen(DEVPREFIX);
+ const char *suffix = mountpoint + strlen(QEMU_DEVPREFIX);
char *domname = virDomainDefGetShortName(vm->def);
size_t off;
@@ -11974,7 +11966,7 @@ qemuDomainGetPreservedMounts(virQEMUDriverConfigPtr cfg,
char **paths = NULL, **mounts = NULL;
size_t i, j, nmounts;
- if (virFileGetMountSubtree(PROC_MOUNTS, "/dev",
+ if (virFileGetMountSubtree(QEMU_PROC_MOUNTS, "/dev",
&mounts, &nmounts) < 0)
goto error;
@@ -12099,7 +12091,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
* Otherwise we might get fooled with `/dev/../var/my_image'.
* For now, lets hope callers play nice.
*/
- if (STRPREFIX(device, DEVPREFIX)) {
+ if (STRPREFIX(device, QEMU_DEVPREFIX)) {
size_t i;
for (i = 0; i < data->ndevMountsPath; i++) {
@@ -12113,7 +12105,7 @@ qemuDomainCreateDeviceRecursive(const char *device,
/* Okay, @device is in /dev but not in any mount point under /dev.
* Create it. */
if (virAsprintf(&devicePath, "%s/%s",
- data->path, device + strlen(DEVPREFIX)) < 0)
+ data->path, device + strlen(QEMU_DEVPREFIX)) < 0)
goto cleanup;
if (virFileMakeParentPath(devicePath) < 0) {
@@ -12375,7 +12367,7 @@ qemuDomainSetupDisk(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
/* qemu-pr-helper might require access to /dev/mapper/control. */
if (disk->src->pr &&
- qemuDomainCreateDevice(DEVICE_MAPPER_CONTROL_PATH, data, true) < 0)
+ qemuDomainCreateDevice(QEMU_DEVICE_MAPPER_CONTROL_PATH, data, true) < 0)
goto cleanup;
ret = 0;
@@ -12707,7 +12699,7 @@ qemuDomainSetupLaunchSecurity(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
VIR_DEBUG("Setting up launch security");
- if (qemuDomainCreateDevice(DEV_SEV, data, false) < 0)
+ if (qemuDomainCreateDevice(QEMU_DEV_SEV, data, false) < 0)
return -1;
VIR_DEBUG("Set up launch security");
@@ -13122,7 +13114,7 @@ qemuDomainAttachDeviceMknodRecursive(virQEMUDriverPtr driver,
isReg = S_ISREG(data.sb.st_mode) || S_ISFIFO(data.sb.st_mode) || S_ISSOCK(data.sb.st_mode);
isDir = S_ISDIR(data.sb.st_mode);
- if ((isReg || isDir) && STRPREFIX(file, DEVPREFIX)) {
+ if ((isReg || isDir) && STRPREFIX(file, QEMU_DEVPREFIX)) {
cfg = virQEMUDriverGetConfig(driver);
if (!(target = qemuDomainGetPreservedMountPath(cfg, vm, file)))
goto cleanup;
@@ -13178,7 +13170,7 @@ qemuDomainAttachDeviceMknodRecursive(virQEMUDriverPtr driver,
}
# endif
- if (STRPREFIX(file, DEVPREFIX)) {
+ if (STRPREFIX(file, QEMU_DEVPREFIX)) {
size_t i;
for (i = 0; i < ndevMountsPath; i++) {
@@ -13287,7 +13279,7 @@ qemuDomainDetachDeviceUnlink(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
int ret = -1;
size_t i;
- if (STRPREFIX(file, DEVPREFIX)) {
+ if (STRPREFIX(file, QEMU_DEVPREFIX)) {
for (i = 0; i < ndevMountsPath; i++) {
if (STREQ(devMountsPath[i], "/dev"))
continue;
@@ -13429,7 +13421,7 @@ qemuDomainNamespaceSetupDisk(virDomainObjPtr vm,
/* qemu-pr-helper might require access to /dev/mapper/control. */
if (src->pr &&
- (VIR_STRDUP(dmPath, DEVICE_MAPPER_CONTROL_PATH) < 0 ||
+ (VIR_STRDUP(dmPath, QEMU_DEVICE_MAPPER_CONTROL_PATH) < 0 ||
VIR_APPEND_ELEMENT_COPY(paths, npaths, dmPath) < 0))
goto cleanup;
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 5cb4a32c0e..3eea8b0f96 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -223,6 +223,13 @@ struct _qemuDomainUnpluggingDevice {
};
+#define QEMU_PROC_MOUNTS "/proc/mounts"
+#define QEMU_DEVPREFIX "/dev/"
+#define QEMU_DEV_VFIO "/dev/vfio/vfio"
+#define QEMU_DEV_SEV "/dev/sev"
+#define QEMU_DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
+
+
typedef enum {
QEMU_DOMAIN_NS_MOUNT = 0,
QEMU_DOMAIN_NS_LAST
diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c
index cc0a4574cd..efa4d62f1f 100644
--- a/src/qemu/qemu_hostdev.c
+++ b/src/qemu/qemu_hostdev.c
@@ -25,6 +25,7 @@
#include <sys/ioctl.h>
#include "qemu_hostdev.h"
+#include "qemu_domain.h"
#include "virlog.h"
#include "virerror.h"
#include "viralloc.h"
@@ -140,7 +141,7 @@ qemuHostdevHostSupportsPassthroughVFIO(void)
return false;
/* condition 2 - /dev/vfio/vfio exists */
- if (!virFileExists("/dev/vfio/vfio"))
+ if (!virFileExists(QEMU_DEV_VFIO))
return false;
return true;
@@ -343,7 +344,7 @@ qemuHostdevPrepareMediatedDevices(virQEMUDriverPtr driver,
/* Checking for VFIO only is fine with mdev, as IOMMU isolation is achieved
* by the physical parent device.
*/
- supportsVFIO = virFileExists("/dev/vfio/vfio");
+ supportsVFIO = virFileExists(QEMU_DEV_VFIO);
for (i = 0; i < nhostdevs; i++) {
if (virHostdevIsMdevDevice(hostdevs[i])) {
--
2.21.0
More information about the libvir-list
mailing list