hostcpu: Implement virHostCPUGetSignature for x86

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/util/virhostcpu.c

@@ -1418,10 +1418,54 @@ virHostCPUGetTscInfo(void)
           (defined(__linux__) || defined(__FreeBSD__)) */
 
 int
-virHostCPUReadSignature(virArch arch G_GNUC_UNUSED,
-                        FILE *cpuinfo G_GNUC_UNUSED,
-                        char **signature G_GNUC_UNUSED)
+virHostCPUReadSignature(virArch arch,
+                        FILE *cpuinfo,
+                        char **signature)
 {
+    size_t lineLen = 1024;
+    g_autofree char *line = g_new0(char, lineLen);
+    g_autofree char *vendor = NULL;
+    g_autofree char *name = NULL;
+    g_autofree char *family = NULL;
+    g_autofree char *model = NULL;
+    g_autofree char *stepping = NULL;
+
+    if (!ARCH_IS_X86(arch))
+        return 0;
+
+    while (fgets(line, lineLen, cpuinfo)) {
+        g_auto(GStrv) parts = g_strsplit(line, ": ", 2);
+
+        if (g_strv_length(parts) != 2)
+            continue;
+
+        g_strstrip(parts[0]);
+        g_strstrip(parts[1]);
+
+        if (STREQ(parts[0], "vendor_id")) {
+            if (!vendor)
+                vendor = g_steal_pointer(&parts[1]);
+        } else if (STREQ(parts[0], "model name")) {
+            if (!name)
+                name = g_steal_pointer(&parts[1]);
+        } else if (STREQ(parts[0], "cpu family")) {
+            if (!family)
+                family = g_steal_pointer(&parts[1]);
+        } else if (STREQ(parts[0], "model")) {
+            if (!model)
+                model = g_steal_pointer(&parts[1]);
+        } else if (STREQ(parts[0], "stepping")) {
+            if (!stepping)
+                stepping = g_steal_pointer(&parts[1]);
+        }
+
+        if (vendor && name && family && model && stepping) {
+            *signature = g_strdup_printf("%s, %s, family: %s, model: %s, stepping: %s",
+                                         vendor, name, family, model, stepping);
+            return 0;
+        }
+    }
+
     return 0;
 }
 

tests/virhostcpudata/linux-x86_64-test1.signature

+GenuineIntel, Intel(R) Xeon(TM) CPU 2.80GHz, family: 15, model: 4, stepping: 8

tests/virhostcpudata/linux-x86_64-test2.signature

+GenuineIntel, Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz, family: 6, model: 23, stepping: 10

tests/virhostcpudata/linux-x86_64-test3.signature

+AuthenticAMD, AMD Opteron(tm) Processor 6172, family: 16, model: 9, stepping: 1

tests/virhostcpudata/linux-x86_64-test4.signature

+GenuineIntel, Intel(R) Xeon(R) CPU E7- 8837  @ 2.67GHz, family: 6, model: 47, stepping: 2

tests/virhostcpudata/linux-x86_64-test5.signature

+GenuineIntel, Intel(R) Xeon(R) CPU           E5320  @ 1.86GHz, family: 6, model: 15, stepping: 7

tests/virhostcpudata/linux-x86_64-test6.signature

+GenuineIntel, Intel(R) Xeon(R) CPU           E5640  @ 2.67GHz, family: 6, model: 44, stepping: 2

tests/virhostcpudata/linux-x86_64-test7.signature

+AuthenticAMD, AMD Opteron(tm) Processor 6174, family: 16, model: 9, stepping: 1

tests/virhostcpudata/linux-x86_64-test8.signature

+AuthenticAMD, AMD Opteron(tm) Processor 6282 SE, family: 21, model: 1, stepping: 2

tests/virhostcpudata/linux-x86_64-with-die.signature

+GenuineIntel, QEMU Virtual CPU version 2.5+, family: 6, model: 6, stepping: 3