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Code

Include pid namespace inode in LXC audit messages

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To allow the efficient correlation of container audit messages
with host hosts, include the pid namespace inode in audit
messages.
This commit is contained in:
Daniel P. Berrange 2013-03-06 14:56:49 +00:00
parent eaf7d4ddff
commit ab1ef3bc6c
3 changed files with 49 additions and 5 deletions
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8
src/conf/domain_audit.c
View File

@ -649,7 +649,8 @@ virDomainAuditStart(virDomainObjPtr vm, const char *reason, bool success)
void
virDomainAuditInit(virDomainObjPtr vm,
pid_t initpid)
pid_t initpid,
ino_t pidns)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
char *vmname;
@ -668,8 +669,9 @@ virDomainAuditInit(virDomainObjPtr vm,
}
VIR_AUDIT(VIR_AUDIT_RECORD_MACHINE_CONTROL, true,
"virt=%s op=init %s uuid=%s vm-pid=%lld init-pid=%lld",
virt, vmname, uuidstr, (long long)vm->pid, (long long)initpid);
"virt=%s op=init %s uuid=%s vm-pid=%lld init-pid=%lld pid-ns=%lld",
virt, vmname, uuidstr, (long long)vm->pid, (long long)initpid,
(long long)pidns);
VIR_FREE(vmname);
}

3
src/conf/domain_audit.h
View File

@ -32,7 +32,8 @@ void virDomainAuditStart(virDomainObjPtr vm,
bool success)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
void virDomainAuditInit(virDomainObjPtr vm,
pid_t pid)
pid_t pid,
ino_t pidns)
ATTRIBUTE_NONNULL(1);
void virDomainAuditStop(virDomainObjPtr vm,
const char *reason)

43
src/lxc/lxc_process.c
View File

@ -630,6 +630,36 @@ static void virLXCProcessMonitorExitNotify(virLXCMonitorPtr mon ATTRIBUTE_UNUSED
priv->stopReason, status);
}
static int
virLXCProcessGetNsInode(pid_t pid,
const char *nsname,
ino_t *inode)
{
char *path = NULL;
struct stat sb;
int ret = -1;
if (virAsprintf(&path, "/proc/%llu/ns/%s",
(unsigned long long)pid, nsname) < 0) {
virReportOOMError();
goto cleanup;
}
if (stat(path, &sb) < 0) {
virReportSystemError(errno,
_("Unable to stat %s"), path);
goto cleanup;
}
*inode = sb.st_ino;
ret = 0;
cleanup:
VIR_FREE(path);
return ret;
}
/* XXX a little evil */
extern virLXCDriverPtr lxc_driver;
static void virLXCProcessMonitorInitNotify(virLXCMonitorPtr mon ATTRIBUTE_UNUSED,
@ -637,8 +667,19 @@ static void virLXCProcessMonitorInitNotify(virLXCMonitorPtr mon ATTRIBUTE_UNUSED
virDomainObjPtr vm)
{
virLXCDomainObjPrivatePtr priv = vm->privateData;
ino_t inode;
priv->initpid = initpid;
virDomainAuditInit(vm, initpid);
if (virLXCProcessGetNsInode(initpid, "pid", &inode) < 0) {
virErrorPtr err = virGetLastError();
VIR_WARN("Cannot obtain pid NS inode for %llu: %s",
(unsigned long long)initpid,
err && err->message ? err->message : "<unknown>");
virResetLastError();
inode = 0;
}
virDomainAuditInit(vm, initpid, inode);
if (virDomainSaveStatus(lxc_driver->caps, lxc_driver->stateDir, vm) < 0)
VIR_WARN("Cannot update XML with PID for LXC %s", vm->def->name);