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Misc OOM / memory leak fixes
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@ -1,3 +1,11 @@
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Thu May 29 11:23:00 EST 2008 Daniel P. Berrange <berrange@redhat.com>
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Misc memory handling / cleanup fixes
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* src/capabilities.c: Avoiding deferencing NULL pointer in
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cleanup code
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* src/qemu_conf.c: Free sound structs on cleanup
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* src/qparams.c: raise a libvirt error upon OOM
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Thu May 29 11:12:00 EST 2008 Daniel P. Berrange <berrange@redhat.com>
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* tests/testutils.c, tests/testutils.h: Add generic main()
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@ -44,7 +44,7 @@ virCapabilitiesNew(const char *arch,
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virCapsPtr caps;
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if (VIR_ALLOC(caps) < 0)
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goto no_memory;
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return NULL;
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if ((caps->host.arch = strdup(arch)) == NULL)
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goto no_memory;
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@ -61,6 +61,9 @@ virCapabilitiesNew(const char *arch,
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static void
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virCapabilitiesFreeHostNUMACell(virCapsHostNUMACellPtr cell)
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{
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if (cell == NULL)
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return;
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VIR_FREE(cell->cpus);
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VIR_FREE(cell);
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}
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@ -69,6 +72,9 @@ static void
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virCapabilitiesFreeGuestDomain(virCapsGuestDomainPtr dom)
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{
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int i;
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if (dom == NULL)
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return;
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VIR_FREE(dom->info.emulator);
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VIR_FREE(dom->info.loader);
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for (i = 0 ; i < dom->info.nmachines ; i++)
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@ -82,6 +88,8 @@ virCapabilitiesFreeGuestDomain(virCapsGuestDomainPtr dom)
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static void
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virCapabilitiesFreeGuestFeature(virCapsGuestFeaturePtr feature)
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{
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if (feature == NULL)
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return;
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VIR_FREE(feature->name);
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VIR_FREE(feature);
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}
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@ -90,6 +98,9 @@ static void
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virCapabilitiesFreeGuest(virCapsGuestPtr guest)
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{
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int i;
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if (guest == NULL)
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return;
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VIR_FREE(guest->ostype);
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VIR_FREE(guest->arch.name);
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@ -120,6 +131,8 @@ virCapabilitiesFreeGuest(virCapsGuestPtr guest)
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void
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virCapabilitiesFree(virCapsPtr caps) {
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int i;
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if (caps == NULL)
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return;
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for (i = 0 ; i < caps->nguests ; i++)
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virCapabilitiesFreeGuest(caps->guests[i]);
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@ -214,6 +214,7 @@ void qemudFreeVMDef(struct qemud_vm_def *def) {
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struct qemud_vm_input_def *input = def->inputs;
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struct qemud_vm_chr_def *serial = def->serials;
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struct qemud_vm_chr_def *parallel = def->parallels;
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struct qemud_vm_sound_def *sound = def->sounds;
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while (disk) {
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struct qemud_vm_disk_def *prev = disk;
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@ -240,6 +241,11 @@ void qemudFreeVMDef(struct qemud_vm_def *def) {
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parallel = parallel->next;
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free(prev);
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}
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while (sound) {
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struct qemud_vm_sound_def *prev = sound;
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sound = sound->next;
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free(prev);
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}
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xmlFree(def->keymap);
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free(def);
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}
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@ -2186,8 +2192,10 @@ static struct qemud_vm_def *qemudParseXML(virConnectPtr conn,
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}
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check = check->next;
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}
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if (collision)
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if (collision) {
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free(sound);
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continue;
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}
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def->nsounds++;
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sound->next = NULL;
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@ -30,6 +30,14 @@
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#include "memory.h"
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#include "qparams.h"
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static void
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qparam_report_oom(void)
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{
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const char *virerr = __virErrorMsg(VIR_ERR_NO_MEMORY, NULL);
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__virRaiseError(NULL, NULL, NULL, VIR_FROM_NONE, VIR_ERR_NO_MEMORY, VIR_ERR_ERROR,
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virerr, NULL, NULL, -1, -1, virerr, NULL);
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}
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struct qparam_set *
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new_qparam_set (int init_alloc, ...)
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{
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@ -39,12 +47,15 @@ new_qparam_set (int init_alloc, ...)
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if (init_alloc <= 0) init_alloc = 1;
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if (VIR_ALLOC(ps) < 0)
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if (VIR_ALLOC(ps) < 0) {
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qparam_report_oom();
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return NULL;
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}
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ps->n = 0;
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ps->alloc = init_alloc;
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if (VIR_ALLOC_N(ps->p, ps->alloc) < 0) {
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VIR_FREE (ps);
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qparam_report_oom();
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return NULL;
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}
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@ -88,7 +99,7 @@ grow_qparam_set (struct qparam_set *ps)
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{
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if (ps->n >= ps->alloc) {
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if (VIR_REALLOC_N(ps->p, ps->alloc * 2) < 0) {
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perror ("realloc");
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qparam_report_oom();
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return -1;
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}
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ps->alloc *= 2;
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@ -104,12 +115,15 @@ append_qparam (struct qparam_set *ps,
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char *pname, *pvalue;
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pname = strdup (name);
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if (!pname)
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if (!pname) {
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qparam_report_oom();
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return -1;
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}
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pvalue = strdup (value);
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if (!pvalue) {
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VIR_FREE (pname);
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qparam_report_oom();
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return -1;
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}
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@ -143,6 +157,7 @@ qparam_get_query (const struct qparam_set *ps)
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}
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if (virBufferError(&buf)) {
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qparam_report_oom();
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return NULL;
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}
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@ -169,7 +184,10 @@ qparam_query_parse (const char *query)
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const char *end, *eq;
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ps = new_qparam_set (0, NULL);
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if (!ps) return NULL;
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if (!ps) {
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qparam_report_oom();
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return NULL;
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}
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if (!query || query[0] == '\0') return ps;
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@ -240,6 +258,7 @@ qparam_query_parse (const char *query)
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return ps;
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out_of_memory:
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qparam_report_oom();
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free_qparam_set (ps);
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return NULL;
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}
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