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Stop passing around old root directory prefix

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Many methods accept a string parameter specifying the
old root directory prefix. Since removal of the non-pivot
root container setup codepaths, this parameter is obsolete
in many methods where the callers always pass "/.oldroot".

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2013-05-15 10:53:14 +01:00 committed by Michal Privoznik
parent 37cebfec92
commit 31453a837b
1 changed files with 35 additions and 50 deletions
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85
src/lxc/lxc_container.c
View File

@ -745,15 +745,14 @@ cleanup:
}
#if WITH_FUSE
static int lxcContainerMountProcFuse(virDomainDefPtr def,
const char *srcprefix)
static int lxcContainerMountProcFuse(virDomainDefPtr def)
{
int ret;
char *meminfo_path = NULL;
if ((ret = virAsprintf(&meminfo_path,
"%s/%s/%s.fuse/meminfo",
srcprefix ? srcprefix : "", LXC_STATE_DIR,
"/.oldroot/%s/%s.fuse/meminfo",
LXC_STATE_DIR,
def->name)) < 0)
return ret;
@ -768,22 +767,20 @@ static int lxcContainerMountProcFuse(virDomainDefPtr def,
return ret;
}
#else
static int lxcContainerMountProcFuse(virDomainDefPtr def ATTRIBUTE_UNUSED,
const char *srcprefix ATTRIBUTE_UNUSED)
static int lxcContainerMountProcFuse(virDomainDefPtr def ATTRIBUTE_UNUSED)
{
return 0;
}
#endif
static int lxcContainerMountFSDevPTS(virDomainDefPtr def,
const char *srcprefix)
static int lxcContainerMountFSDevPTS(virDomainDefPtr def)
{
int ret;
char *path = NULL;
if ((ret = virAsprintf(&path,
"%s/%s/%s.devpts",
srcprefix ? srcprefix : "", LXC_STATE_DIR,
"/.oldroot/%s/%s.devpts",
LXC_STATE_DIR,
def->name)) < 0)
return ret;
@ -1067,8 +1064,7 @@ lxcContainerMountDetectFilesystem(const char *src ATTRIBUTE_UNUSED,
*/
static int lxcContainerMountFSBlockAuto(virDomainFSDefPtr fs,
int fsflags,
const char *src,
const char *srcprefix)
const char *src)
{
FILE *fp = NULL;
int ret = -1;
@ -1078,12 +1074,12 @@ static int lxcContainerMountFSBlockAuto(virDomainFSDefPtr fs,
char *line = NULL;
const char *type;
VIR_DEBUG("src=%s srcprefix=%s dst=%s", src, srcprefix, fs->dst);
VIR_DEBUG("src=%s dst=%s", src, fs->dst);
/* First time around we use /etc/filesystems */
retry:
if (virAsprintf(&fslist, "%s%s",
srcprefix, tryProc ? "/proc/filesystems" : "/etc/filesystems") < 0) {
if (virAsprintf(&fslist, "/.oldroot%s",
tryProc ? "/proc/filesystems" : "/etc/filesystems") < 0) {
virReportOOMError();
goto cleanup;
}
@ -1196,8 +1192,7 @@ cleanup:
* probing for filesystem type
*/
static int lxcContainerMountFSBlockHelper(virDomainFSDefPtr fs,
const char *src,
const char *srcprefix)
const char *src)
{
int fsflags = 0;
int ret = -1;
@ -1226,7 +1221,7 @@ static int lxcContainerMountFSBlockHelper(virDomainFSDefPtr fs,
}
ret = 0;
} else {
ret = lxcContainerMountFSBlockAuto(fs, fsflags, src, srcprefix);
ret = lxcContainerMountFSBlockAuto(fs, fsflags, src);
}
cleanup:
@ -1246,7 +1241,7 @@ static int lxcContainerMountFSBlock(virDomainFSDefPtr fs,
goto cleanup;
}
ret = lxcContainerMountFSBlockHelper(fs, src, srcprefix);
ret = lxcContainerMountFSBlockHelper(fs, src);
VIR_DEBUG("Done mounting filesystem ret=%d", ret);
@ -1300,16 +1295,15 @@ cleanup:
static int lxcContainerMountFS(virDomainFSDefPtr fs,
const char *srcprefix,
char *sec_mount_options)
{
switch (fs->type) {
case VIR_DOMAIN_FS_TYPE_MOUNT:
if (lxcContainerMountFSBind(fs, srcprefix) < 0)
if (lxcContainerMountFSBind(fs, "/.oldroot") < 0)
return -1;
break;
case VIR_DOMAIN_FS_TYPE_BLOCK:
if (lxcContainerMountFSBlock(fs, srcprefix) < 0)
if (lxcContainerMountFSBlock(fs, "/.oldroot") < 0)
return -1;
break;
case VIR_DOMAIN_FS_TYPE_RAM:
@ -1339,12 +1333,11 @@ static int lxcContainerMountFS(virDomainFSDefPtr fs,
static int lxcContainerMountAllFS(virDomainDefPtr vmDef,
const char *dstprefix,
bool skipRoot,
char *sec_mount_options)
{
size_t i;
VIR_DEBUG("Mounting %s %d", dstprefix, skipRoot);
VIR_DEBUG("Mounting %d", skipRoot);
/* Pull in rest of container's mounts */
for (i = 0 ; i < vmDef->nfss ; i++) {
@ -1356,7 +1349,7 @@ static int lxcContainerMountAllFS(virDomainDefPtr vmDef,
false) < 0)
return -1;
if (lxcContainerMountFS(vmDef->fss[i], dstprefix, sec_mount_options) < 0)
if (lxcContainerMountFS(vmDef->fss[i], sec_mount_options) < 0)
return -1;
}
@ -1367,7 +1360,6 @@ static int lxcContainerMountAllFS(virDomainDefPtr vmDef,
static int lxcContainerSetupDisk(virDomainDefPtr vmDef,
virDomainDiskDefPtr def,
const char *dstprefix,
virSecurityManagerPtr securityDriver)
{
char *src = NULL;
@ -1388,7 +1380,7 @@ static int lxcContainerSetupDisk(virDomainDefPtr vmDef,
goto cleanup;
}
if (virAsprintf(&src, "%s/%s", dstprefix, def->src) < 0) {
if (virAsprintf(&src, "/.oldroot/%s", def->src) < 0) {
virReportOOMError();
goto cleanup;
}
@ -1448,15 +1440,14 @@ cleanup:
}
static int lxcContainerSetupAllDisks(virDomainDefPtr vmDef,
const char *dstprefix,
virSecurityManagerPtr securityDriver)
{
size_t i;
VIR_DEBUG("Setting up disks %s", dstprefix);
VIR_DEBUG("Setting up disks");
for (i = 0 ; i < vmDef->ndisks ; i++) {
if (lxcContainerSetupDisk(vmDef, vmDef->disks[i],
dstprefix, securityDriver) < 0)
securityDriver) < 0)
return -1;
}
@ -1467,7 +1458,6 @@ static int lxcContainerSetupAllDisks(virDomainDefPtr vmDef,
static int lxcContainerSetupHostdevSubsysUSB(virDomainDefPtr vmDef ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr def ATTRIBUTE_UNUSED,
const char *dstprefix ATTRIBUTE_UNUSED,
virSecurityManagerPtr securityDriver ATTRIBUTE_UNUSED)
{
int ret = -1;
@ -1490,7 +1480,7 @@ static int lxcContainerSetupHostdevSubsysUSB(virDomainDefPtr vmDef ATTRIBUTE_UNU
goto cleanup;
}
if (virAsprintf(&src, "%s/%s", dstprefix, dstfile) < 0) {
if (virAsprintf(&src, "/.oldroot/%s", dstfile) < 0) {
virReportOOMError();
goto cleanup;
}
@ -1540,7 +1530,6 @@ cleanup:
static int lxcContainerSetupHostdevCapsStorage(virDomainDefPtr vmDef ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr def ATTRIBUTE_UNUSED,
const char *dstprefix ATTRIBUTE_UNUSED,
virSecurityManagerPtr securityDriver ATTRIBUTE_UNUSED)
{
char *src = NULL;
@ -1554,7 +1543,7 @@ static int lxcContainerSetupHostdevCapsStorage(virDomainDefPtr vmDef ATTRIBUTE_U
goto cleanup;
}
if (virAsprintf(&src, "%s/%s", dstprefix, def->source.caps.u.storage.block) < 0) {
if (virAsprintf(&src, "/.oldroot/%s", def->source.caps.u.storage.block) < 0) {
virReportOOMError();
goto cleanup;
}
@ -1598,7 +1587,6 @@ cleanup:
static int lxcContainerSetupHostdevCapsMisc(virDomainDefPtr vmDef ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr def ATTRIBUTE_UNUSED,
const char *dstprefix ATTRIBUTE_UNUSED,
virSecurityManagerPtr securityDriver ATTRIBUTE_UNUSED)
{
char *src = NULL;
@ -1612,7 +1600,7 @@ static int lxcContainerSetupHostdevCapsMisc(virDomainDefPtr vmDef ATTRIBUTE_UNUS
goto cleanup;
}
if (virAsprintf(&src, "%s/%s", dstprefix, def->source.caps.u.misc.chardev) < 0) {
if (virAsprintf(&src, "/.oldroot/%s", def->source.caps.u.misc.chardev) < 0) {
virReportOOMError();
goto cleanup;
}
@ -1655,12 +1643,11 @@ cleanup:
static int lxcContainerSetupHostdevSubsys(virDomainDefPtr vmDef,
virDomainHostdevDefPtr def,
const char *dstprefix,
virSecurityManagerPtr securityDriver)
{
switch (def->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB:
return lxcContainerSetupHostdevSubsysUSB(vmDef, def, dstprefix, securityDriver);
return lxcContainerSetupHostdevSubsysUSB(vmDef, def, securityDriver);
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
@ -1673,15 +1660,14 @@ static int lxcContainerSetupHostdevSubsys(virDomainDefPtr vmDef,
static int lxcContainerSetupHostdevCaps(virDomainDefPtr vmDef,
virDomainHostdevDefPtr def,
const char *dstprefix,
virSecurityManagerPtr securityDriver)
{
switch (def->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_CAPS_TYPE_STORAGE:
return lxcContainerSetupHostdevCapsStorage(vmDef, def, dstprefix, securityDriver);
return lxcContainerSetupHostdevCapsStorage(vmDef, def, securityDriver);
case VIR_DOMAIN_HOSTDEV_CAPS_TYPE_MISC:
return lxcContainerSetupHostdevCapsMisc(vmDef, def, dstprefix, securityDriver);
return lxcContainerSetupHostdevCapsMisc(vmDef, def, securityDriver);
case VIR_DOMAIN_HOSTDEV_CAPS_TYPE_NET:
return 0; // case is handled in virLXCControllerMoveInterfaces
@ -1696,21 +1682,20 @@ static int lxcContainerSetupHostdevCaps(virDomainDefPtr vmDef,
static int lxcContainerSetupAllHostdevs(virDomainDefPtr vmDef,
const char *dstprefix,
virSecurityManagerPtr securityDriver)
{
size_t i;
VIR_DEBUG("Setting up hostdevs %s", dstprefix);
VIR_DEBUG("Setting up hostdevs");
for (i = 0 ; i < vmDef->nhostdevs ; i++) {
virDomainHostdevDefPtr def = vmDef->hostdevs[i];
switch (def->mode) {
case VIR_DOMAIN_HOSTDEV_MODE_SUBSYS:
if (lxcContainerSetupHostdevSubsys(vmDef, def, dstprefix, securityDriver) < 0)
if (lxcContainerSetupHostdevSubsys(vmDef, def, securityDriver) < 0)
return -1;
break;
case VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES:
if (lxcContainerSetupHostdevCaps(vmDef, def, dstprefix, securityDriver) < 0)
if (lxcContainerSetupHostdevCaps(vmDef, def, securityDriver) < 0)
return -1;
break;
default:
@ -1789,7 +1774,7 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
goto cleanup;
/* Mounts /proc/meminfo etc sysinfo */
if (lxcContainerMountProcFuse(vmDef, "/.oldroot") < 0)
if (lxcContainerMountProcFuse(vmDef) < 0)
goto cleanup;
/* Now we can re-mount the cgroups controllers in the
@ -1798,7 +1783,7 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
goto cleanup;
/* Mounts /dev/pts */
if (lxcContainerMountFSDevPTS(vmDef, "/.oldroot") < 0)
if (lxcContainerMountFSDevPTS(vmDef) < 0)
goto cleanup;
/* Populates device nodes in /dev/ */
@ -1806,15 +1791,15 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
goto cleanup;
/* Sets up any non-root mounts from guest config */
if (lxcContainerMountAllFS(vmDef, "/.oldroot", true, sec_mount_options) < 0)
if (lxcContainerMountAllFS(vmDef, true, sec_mount_options) < 0)
goto cleanup;
/* Sets up any extra disks from guest config */
if (lxcContainerSetupAllDisks(vmDef, "/.oldroot", securityDriver) < 0)
if (lxcContainerSetupAllDisks(vmDef, securityDriver) < 0)
goto cleanup;
/* Sets up any extra host devices from guest config */
if (lxcContainerSetupAllHostdevs(vmDef, "/.oldroot", securityDriver) < 0)
if (lxcContainerSetupAllHostdevs(vmDef, securityDriver) < 0)
goto cleanup;
/* Gets rid of all remaining mounts from host OS, including /.oldroot itself */