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* src/libvir.c src/xen_internal.c src/xen_internal.h: completing the

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API implementation, only CreateLinux is now missing.
Daniel
This commit is contained in:
Daniel Veillard 2005-12-12 13:22:20 +00:00
parent 2da25a157c
commit a8d7d679cc
5 changed files with 179 additions and 23 deletions
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5
ChangeLog
View File

@ -1,3 +1,8 @@
Mon Dec 12 14:21:18 CET 2005 Daniel Veillard <veillard@redhat.com>
* src/libvir.c src/xen_internal.c src/xen_internal.h: completing the
API implementation, only CreateLinux is now missing.
Fri Dec 9 15:39:18 CET 2005 Daniel Veillard <veillard@redhat.com>
* docs/search.php docs/index.py docs/*.xsl docs/html/*: fixed the

3
docs/index.html
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@ -1,8 +1,7 @@
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<link rel="SHORTCUT ICON" href="/favicon.ico" />
<style type="text/css">
TD {font-family: Verdana,Arial,Helvetica}

166
src/libvir.c
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@ -194,6 +194,30 @@ failed:
return(NULL);
}
/**
* virConnectCheckStoreID:
* @conn: pointer to the hypervisor connection
* @id: the id number as returned from Xenstore
*
* the xenstore sometimes list non-running domains, double check
* from the hypervisor if we have direct access
*
* Returns -1 if the check failed, 0 if successful or not possible to check
*/
static int
virConnectCheckStoreID(virConnectPtr conn, int id) {
if (conn->handle >= 0) {
dom0_getdomaininfo_t dominfo;
int tmp;
dominfo.domain = id;
tmp = xenHypervisorGetDomainInfo(conn->handle, id, &dominfo);
if (tmp < 0)
return(-1);
}
return(0);
}
/**
* virDomainFreeName:
* @domain: a domain object
@ -317,6 +341,9 @@ virConnectListDomains(virConnectPtr conn, int *ids, int maxids) {
ret = -1;
goto done;
}
if (virConnectCheckStoreID(conn, (int) id) < 0)
continue;
ids[ret++] = (int) id;
}
@ -385,23 +412,6 @@ virDomainCreateLinux(virConnectPtr conn, const char *kernel_path,
return(NULL);
}
/**
* virDomainLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the domain
*
* Try to lookup a domain on the given hypervisor
*
* Returns a new domain object or NULL in case of failure
*/
virDomainPtr
virDomainLookupByName(virConnectPtr conn, const char *name) {
if ((conn == NULL) || (conn->magic != VIR_CONNECT_MAGIC) || (name == NULL))
return(NULL);
TODO
return(NULL);
}
#if 0
/* Not used ATM */
/**
@ -525,6 +535,74 @@ virDomainLookupByID(virConnectPtr conn, int id) {
return(ret);
}
/**
* virDomainLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the domain
*
* Try to lookup a domain on the given hypervisor
*
* Returns a new domain object or NULL in case of failure
*/
virDomainPtr
virDomainLookupByName(virConnectPtr conn, const char *name) {
struct xs_transaction_handle* t;
virDomainPtr ret = NULL;
unsigned int num, i, len;
long id;
char **idlist = NULL, *endptr;
char prop[200], *tmp;
int found = 0;
if ((conn == NULL) || (conn->magic != VIR_CONNECT_MAGIC) || (name == NULL))
return(NULL);
t = xs_transaction_start(conn->xshandle);
if (t == NULL)
goto done;
idlist = xs_directory(conn->xshandle, t, "/local/domain", &num);
if (idlist == NULL)
goto done;
for (i = 0;i < num;i++) {
id = strtol(idlist[i], &endptr, 10);
if ((endptr == idlist[i]) || (*endptr != 0)) {
goto done;
}
if (virConnectCheckStoreID(conn, (int) id) < 0)
continue;
snprintf(prop, 199, "/local/domain/%s/name", idlist[i]);
prop[199] = 0;
tmp = xs_read(conn->xshandle, t, prop, &len);
if (tmp != NULL) {
found = !strcmp(name, tmp);
free(tmp);
if (found)
break;
}
}
if (found) {
ret = (virDomainPtr) malloc(sizeof(virDomain));
if (ret == NULL)
goto done;
ret->magic = VIR_DOMAIN_MAGIC;
ret->conn = conn;
ret->handle = id;
ret->path = xs_get_domain_path(conn->xshandle, (unsigned int) id);
ret->name = strdup(name);
}
done:
if (t != NULL)
xs_transaction_end(conn->xshandle, t, 0);
if (idlist != NULL)
free(idlist);
return(ret);
}
/**
* virDomainDestroy:
* @domain: a domain object
@ -655,10 +733,29 @@ virDomainGetID(virDomainPtr domain) {
*/
unsigned long
virDomainGetMaxMemory(virDomainPtr domain) {
unsigned long ret = 0;
if ((domain == NULL) || (domain->magic != VIR_DOMAIN_MAGIC))
return(0);
TODO
return(0);
if (domain->conn->flags & VIR_CONNECT_RO) {
char *tmp;
tmp = virDomainDoStoreQuery(domain, "memory/target");
if (tmp != NULL) {
ret = (unsigned long) atol(tmp);
free(tmp);
}
} else {
dom0_getdomaininfo_t dominfo;
int tmp;
dominfo.domain = domain->handle;
tmp = xenHypervisorGetDomainInfo(domain->conn->handle, domain->handle,
&dominfo);
if (tmp >= 0)
ret = dominfo.max_pages * 4;
}
return(ret);
}
/**
@ -674,11 +771,38 @@ virDomainGetMaxMemory(virDomainPtr domain) {
*/
int
virDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) {
int ret;
char s[256], v[30];
struct xs_transaction_handle* t;
if ((domain == NULL) || (domain->magic != VIR_DOMAIN_MAGIC) ||
(memory < 4096))
return(-1);
TODO
return(-1);
if (domain->conn->flags & VIR_CONNECT_RO)
return(-1);
ret = xenHypervisorSetMaxMemory(domain->conn->handle, domain->handle,
memory);
if (ret < 0)
return(-1);
/*
* try to update at the Xenstore level too
* Failing to do so should not be considered fatal though as long
* as the hypervisor call succeeded
*/
snprintf(s, 255, "/local/domain/%d/memory/target", domain->handle);
s[255] = 0;
snprintf(v, 29, "%lu", memory);
v[30] = 0;
t = xs_transaction_start(domain->conn->xshandle);
if (t == NULL)
return(0);
xs_write(domain->conn->xshandle, t, &s[0], &v[0], strlen(v));
xs_transaction_end(domain->conn->xshandle, t, 0);
return(ret);
}
/**

25
src/xen_internal.c
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@ -249,3 +249,28 @@ xenHypervisorDestroyDomain(int handle, int domain) {
return(0);
}
/**
* xenHypervisorSetMaxMemory:
* @handle: the handle to the Xen hypervisor
* @domain: the domain ID
* @memory: the max memory size in kilobytes.
*
* Do an hypervisor call to change the maximum amount of memory used
*
* Returns 0 in case of success, -1 in case of error.
*/
int
xenHypervisorSetMaxMemory(int handle, int domain, unsigned long memory) {
dom0_op_t op;
int ret;
op.cmd = DOM0_SETDOMAINMAXMEM;
op.u.setdomainmaxmem.domain = (domid_t) domain;
op.u.setdomainmaxmem.max_memkb = memory;
ret = xenHypervisorDoOp(handle, &op);
if (ret < 0)
return(-1);
return(0);
}

3
src/xen_internal.h
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@ -32,6 +32,9 @@ int xenHypervisorPauseDomain (int handle,
int xenHypervisorGetDomainInfo (int handle,
int domain,
dom0_getdomaininfo_t *info);
int xenHypervisorSetMaxMemory (int handle,
int domain,
unsigned long memory);
#ifdef __cplusplus
}