[libvirt] [PATCH 18/20] Make qemuCapsProbeMachineTypes & qemuCapsProbeCPUModels static
Daniel P. Berrange
berrange at redhat.com
Tue Sep 11 14:11:26 UTC 2012
From: "Daniel P. Berrange" <berrange at redhat.com>
The qemuCapsProbeMachineTypes & qemuCapsProbeCPUModels methods
do not need to be invoked directly anymore. Make them static
and refactor them to directly populate the qemuCapsPtr object
Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
src/qemu/qemu_capabilities.c | 238 ++++++++++++++++---------------------------
src/qemu/qemu_capabilities.h | 13 +--
2 files changed, 90 insertions(+), 161 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index f9a1dd5..a5c25cb 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -298,17 +298,16 @@ qemuCapsProbeCommand(const char *qemu,
*/
static int
qemuCapsParseMachineTypesStr(const char *output,
- virCapsGuestMachinePtr **machines,
- size_t *nmachines)
+ qemuCapsPtr caps)
{
const char *p = output;
const char *next;
- virCapsGuestMachinePtr *list = NULL;
- int nitems = 0;
+ size_t defIdx = 0;
do {
const char *t;
- virCapsGuestMachinePtr machine;
+ char *name;
+ char *canonical = NULL;
if ((next = strchr(p, '\n')))
++next;
@@ -319,56 +318,61 @@ qemuCapsParseMachineTypesStr(const char *output,
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
- if (VIR_ALLOC(machine) < 0)
+ if (!(name = strndup(p, t - p)))
goto no_memory;
- if (!(machine->name = strndup(p, t - p))) {
- VIR_FREE(machine);
- goto no_memory;
- }
-
- if (VIR_REALLOC_N(list, nitems + 1) < 0) {
- VIR_FREE(machine->name);
- VIR_FREE(machine);
- goto no_memory;
- }
-
- p = t;
- if (!(t = strstr(p, "(default)")) || (next && t >= next)) {
- list[nitems++] = machine;
- } else {
- /* put the default first in the list */
- memmove(list + 1, list, sizeof(*list) * nitems);
- list[0] = machine;
- nitems++;
- }
+ if (strstr(p, "(default)"))
+ defIdx = caps->nmachineTypes;
if ((t = strstr(p, "(alias of ")) && (!next || t < next)) {
p = t + strlen("(alias of ");
if (!(t = strchr(p, ')')) || (next && t >= next))
continue;
- if (!(machine->canonical = strndup(p, t - p)))
+ if (!(canonical = strndup(p, t - p))) {
+ VIR_FREE(name);
goto no_memory;
+ }
+ }
+
+ if (VIR_REALLOC_N(caps->machineTypes, caps->nmachineTypes + 1) < 0 ||
+ VIR_REALLOC_N(caps->machineAliases, caps->nmachineTypes + 1) < 0) {
+ VIR_FREE(name);
+ VIR_FREE(canonical);
+ goto no_memory;
+ }
+ caps->nmachineTypes++;
+ if (canonical) {
+ caps->machineTypes[caps->nmachineTypes-1] = canonical;
+ caps->machineAliases[caps->nmachineTypes-1] = name;
+ } else {
+ caps->machineTypes[caps->nmachineTypes-1] = name;
}
} while ((p = next));
- *machines = list;
- *nmachines = nitems;
+
+ if (defIdx != 0) {
+ char *name = caps->machineTypes[defIdx];
+ char *alias = caps->machineAliases[defIdx];
+ memmove(caps->machineTypes + 1,
+ caps->machineTypes,
+ sizeof(caps->machineTypes[0]) * defIdx);
+ memmove(caps->machineAliases + 1,
+ caps->machineAliases,
+ sizeof(caps->machineAliases[0]) * defIdx);
+ caps->machineTypes[0] = name;
+ caps->machineAliases[0] = alias;
+ }
return 0;
no_memory:
virReportOOMError();
- virCapabilitiesFreeMachines(list, nitems);
return -1;
}
-int
-qemuCapsProbeMachineTypes(const char *binary,
- qemuCapsPtr caps,
- virCapsGuestMachinePtr **machines,
- size_t *nmachines)
+static int
+qemuCapsProbeMachineTypes(qemuCapsPtr caps)
{
char *output;
int ret = -1;
@@ -379,12 +383,13 @@ qemuCapsProbeMachineTypes(const char *binary,
* Technically we could catch the exec() failure, but that's
* in a sub-process so it's hard to feed back a useful error.
*/
- if (!virFileIsExecutable(binary)) {
- virReportSystemError(errno, _("Cannot find QEMU binary %s"), binary);
+ if (!virFileIsExecutable(caps->binary)) {
+ virReportSystemError(errno, _("Cannot find QEMU binary %s"),
+ caps->binary);
return -1;
}
- cmd = qemuCapsProbeCommand(binary, caps);
+ cmd = qemuCapsProbeCommand(caps->binary, caps);
virCommandAddArgList(cmd, "-M", "?", NULL);
virCommandSetOutputBuffer(cmd, &output);
@@ -392,7 +397,7 @@ qemuCapsProbeMachineTypes(const char *binary,
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
- if (qemuCapsParseMachineTypesStr(output, machines, nmachines) < 0)
+ if (qemuCapsParseMachineTypesStr(output, caps) < 0)
goto cleanup;
ret = 0;
@@ -407,8 +412,7 @@ cleanup:
typedef int
(*qemuCapsParseCPUModels)(const char *output,
- size_t *retcount,
- const char ***retcpus);
+ qemuCapsPtr caps);
/* Format:
* <arch> <model>
@@ -417,17 +421,15 @@ typedef int
*/
static int
qemuCapsParseX86Models(const char *output,
- size_t *retcount,
- const char ***retcpus)
+ qemuCapsPtr caps)
{
const char *p = output;
const char *next;
- unsigned int count = 0;
- const char **cpus = NULL;
- int i;
+ int ret = -1;
do {
const char *t;
+ size_t len;
if ((next = strchr(p, '\n')))
next++;
@@ -445,47 +447,31 @@ qemuCapsParseX86Models(const char *output,
if (*p == '\0' || *p == '\n')
continue;
- if (retcpus) {
- unsigned int len;
-
- if (VIR_REALLOC_N(cpus, count + 1) < 0) {
- virReportOOMError();
- goto error;
- }
+ if (VIR_EXPAND_N(caps->cpuDefinitions, caps->ncpuDefinitions, 1) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
- if (next)
- len = next - p - 1;
- else
- len = strlen(p);
+ if (next)
+ len = next - p - 1;
+ else
+ len = strlen(p);
- if (len > 2 && *p == '[' && p[len - 1] == ']') {
- p++;
- len -= 2;
- }
+ if (len > 2 && *p == '[' && p[len - 1] == ']') {
+ p++;
+ len -= 2;
+ }
- if (!(cpus[count] = strndup(p, len))) {
- virReportOOMError();
- goto error;
- }
+ if (!(caps->cpuDefinitions[caps->ncpuDefinitions - 1] = strndup(p, len))) {
+ virReportOOMError();
+ goto cleanup;
}
- count++;
} while ((p = next));
- if (retcount)
- *retcount = count;
- if (retcpus)
- *retcpus = cpus;
-
- return 0;
-
-error:
- if (cpus) {
- for (i = 0; i < count; i++)
- VIR_FREE(cpus[i]);
- }
- VIR_FREE(cpus);
+ ret = 0;
- return -1;
+cleanup:
+ return ret;
}
/* ppc64 parser.
@@ -493,17 +479,15 @@ error:
*/
static int
qemuCapsParsePPCModels(const char *output,
- size_t *retcount,
- const char ***retcpus)
+ qemuCapsPtr caps)
{
const char *p = output;
const char *next;
- unsigned int count = 0;
- const char **cpus = NULL;
- int i, ret = -1;
+ int ret = -1;
do {
const char *t;
+ size_t len;
if ((next = strchr(p, '\n')))
next++;
@@ -524,75 +508,52 @@ qemuCapsParsePPCModels(const char *output,
if (*p == '\n')
continue;
- if (retcpus) {
- unsigned int len;
-
- if (VIR_REALLOC_N(cpus, count + 1) < 0) {
- virReportOOMError();
- goto cleanup;
- }
+ if (VIR_EXPAND_N(caps->cpuDefinitions, caps->ncpuDefinitions, 1) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
- len = t - p - 1;
+ len = t - p - 1;
- if (!(cpus[count] = strndup(p, len))) {
- virReportOOMError();
- goto cleanup;
- }
+ if (!(caps->cpuDefinitions[caps->ncpuDefinitions - 1] = strndup(p, len))) {
+ virReportOOMError();
+ goto cleanup;
}
- count++;
} while ((p = next));
- if (retcount)
- *retcount = count;
- if (retcpus) {
- *retcpus = cpus;
- cpus = NULL;
- }
ret = 0;
cleanup:
- if (cpus) {
- for (i = 0; i < count; i++)
- VIR_FREE(cpus[i]);
- VIR_FREE(cpus);
- }
return ret;
}
-int
-qemuCapsProbeCPUModels(const char *qemu,
- qemuCapsPtr caps,
- const char *arch,
- size_t *count,
- const char ***cpus)
+static int
+qemuCapsProbeCPUModels(qemuCapsPtr caps)
{
char *output = NULL;
int ret = -1;
qemuCapsParseCPUModels parse;
virCommandPtr cmd;
- if (count)
- *count = 0;
- if (cpus)
- *cpus = NULL;
-
- if (STREQ(arch, "i686") || STREQ(arch, "x86_64"))
+ if (STREQ(caps->arch, "i686") ||
+ STREQ(caps->arch, "x86_64"))
parse = qemuCapsParseX86Models;
- else if (STREQ(arch, "ppc64"))
+ else if (STREQ(caps->arch, "ppc64"))
parse = qemuCapsParsePPCModels;
else {
- VIR_DEBUG("don't know how to parse %s CPU models", arch);
+ VIR_DEBUG("don't know how to parse %s CPU models",
+ caps->arch);
return 0;
}
- cmd = qemuCapsProbeCommand(qemu, caps);
+ cmd = qemuCapsProbeCommand(caps->binary, caps);
virCommandAddArgList(cmd, "-cpu", "?", NULL);
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
- if (parse(output, count, cpus) < 0)
+ if (parse(output, caps) < 0)
goto cleanup;
ret = 0;
@@ -1741,9 +1702,6 @@ qemuCapsPtr qemuCapsNewForBinary(const char *binary)
unsigned int is_kvm;
char *help = NULL;
virCommandPtr cmd = NULL;
- virCapsGuestMachinePtr *machines = NULL;
- size_t nmachines;
- size_t i;
struct stat sb;
if (!(caps->binary = strdup(binary)))
@@ -1818,31 +1776,12 @@ qemuCapsPtr qemuCapsNewForBinary(const char *binary)
qemuCapsExtractDeviceStr(binary, caps) < 0)
goto error;
- if (qemuCapsProbeCPUModels(binary, caps, caps->arch,
- &caps->ncpuDefinitions,
- (const char ***)&caps->cpuDefinitions) < 0)
+ if (qemuCapsProbeCPUModels(caps) < 0)
goto error;
- if (qemuCapsProbeMachineTypes(binary, caps,
- &machines, &nmachines) < 0)
+ if (qemuCapsProbeMachineTypes(caps) < 0)
goto error;
- if (VIR_ALLOC_N(caps->machineTypes, nmachines) < 0)
- goto no_memory;
- if (VIR_ALLOC_N(caps->machineAliases, nmachines) < 0)
- goto no_memory;
- caps->nmachineTypes = nmachines;
-
- for (i = 0 ; i < caps->nmachineTypes ; i++) {
- if (machines[i]->canonical) {
- caps->machineTypes[i] = machines[i]->canonical;
- caps->machineAliases[i] = machines[i]->name;
- } else {
- caps->machineTypes[i] = machines[i]->name;
- }
- }
- VIR_FREE(machines);
-
cleanup:
VIR_FREE(help);
virCommandFree(cmd);
@@ -1851,7 +1790,6 @@ cleanup:
no_memory:
virReportOOMError();
error:
- virCapabilitiesFreeMachines(machines, nmachines);
virObjectUnref(caps);
caps = NULL;
goto cleanup;
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 9d36726..2847879 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -194,21 +194,11 @@ void qemuCapsCacheFree(qemuCapsCachePtr cache);
virCapsPtr qemuCapsInit(qemuCapsCachePtr cache);
-int qemuCapsProbeMachineTypes(const char *binary,
- qemuCapsPtr caps,
- virCapsGuestMachinePtr **machines,
- size_t *nmachines);
-
-int qemuCapsProbeCPUModels(const char *qemu,
- qemuCapsPtr caps,
- const char *arch,
- size_t *count,
- const char ***cpus);
-
int qemuCapsGetDefaultVersion(virCapsPtr caps,
qemuCapsCachePtr capsCache,
unsigned int *version);
+/* Only for use by test suite */
int qemuCapsParseHelpStr(const char *qemu,
const char *str,
qemuCapsPtr caps,
@@ -216,6 +206,7 @@ int qemuCapsParseHelpStr(const char *qemu,
unsigned int *is_kvm,
unsigned int *kvm_version,
bool check_yajl);
+/* Only for use by test suite */
int qemuCapsParseDeviceStr(const char *str,
qemuCapsPtr caps);
--
1.7.11.4
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