[libvirt] [PATCH v3 06/20] Make qemuCapsProbeMachineTypes & qemuCapsProbeCPUModels static

From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; 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(a)redhat.com&gt; --- 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 888c56c..7e4ea50 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -305,17 +305,16 @@ 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; @@ -326,56 +325,61 @@ 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; @@ -386,12 +390,13 @@ 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); @@ -399,7 +404,7 @@ 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; @@ -414,8 +419,7 @@ cleanup: typedef int (*qemuCapsParseCPUModels)(const char *output, - size_t *retcount, - const char ***retcpus); + qemuCapsPtr caps); /* Format: * <arch> <model> @@ -424,17 +428,15 @@ 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++; @@ -452,47 +454,31 @@ 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. @@ -500,17 +486,15 @@ 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++; @@ -531,75 +515,52 @@ 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; @@ -1782,9 +1743,6 @@ 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))) @@ -1853,31 +1811,12 @@ 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); @@ -1886,7 +1825,6 @@ 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 24591d8..c6e4dd8 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -202,21 +202,11 @@ 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, @@ -224,6 +214,7 @@ 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