Added os_version_minor sys variable

Ticket: ENT-8118
Signed-off-by: Victor Moene <victor.moene@northern.tech>

Author: victormlg

libenv/sysinfo.c

@@ -161,6 +161,10 @@ void CalculateDomainName(const char *nodename, const char *dnsname,
                          char *uqname, size_t uqname_size,
                          char *domain, size_t domain_size);
 
+static void SysOSVersionMinorPut(EvalContext *ctx, char *strminor, char *tags);
+static void SysOSVersionMinorPutInt(EvalContext *ctx, int minor, char *tags);
+static void SysOsVersionMinorSetDefault(EvalContext *ctx);
+
 #ifdef __APPLE__
 static void Apple_Version(EvalContext *ctx);
 #endif
@@ -1126,6 +1130,8 @@ static void SetFlavor2(
 
 #ifdef __linux__
 
+static void SysOSVersionMinorPutFromOSReleaseVersionID(EvalContext *ctx, char *name, char *version_id, char *tags);
+
 /**
  * @brief Combines OS and version string to define multiple hard classes
  *
@@ -1213,6 +1219,12 @@ static void OSReleaseParse(EvalContext *ctx, const char *file_path)
                     *first_underscore = '\0';
                     SetFlavor2(ctx, os_release_id, os_release_version_id);
                     *first_underscore = '_';
+
+                    // set os version minor
+                    const char *const_os_release_name = JsonObjectGetAsString(os_release_json, "NAME");
+                    char *os_release_name = SafeStringDuplicate(const_os_release_name);
+                    SysOSVersionMinorPutFromOSReleaseVersionID(ctx, os_release_name, os_release_version_id, tags);
+                    free(os_release_name);
                 }
                 else
                 {
@@ -1733,6 +1745,7 @@ static void Apple_Version(EvalContext *ctx)
         assert(ret >= 0 && (size_t) ret < sizeof(buf));
         Log(LOG_LEVEL_VERBOSE, "This appears to be a %s %u.%u system.", product_name, major, minor);
         EvalContextClassPutHard(ctx, buf, "inventory,attribute_name=none,source=agent");
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent");
     }
 
     if (revcomps > 2)
@@ -1798,6 +1811,7 @@ static void Linux_Oracle_VM_Server_Version(EvalContext *ctx)
 
         snprintf(buf, CF_BUFSIZE, "oraclevmserver_%d_%d", major, minor);
         EvalContextClassPutHard(ctx, buf, "inventory,attribute_name=none,source=agent");
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent");
     }
 
     if (revcomps > 2)
@@ -1849,6 +1863,7 @@ static void Linux_Oracle_Version(EvalContext *ctx)
 
         snprintf(buf, CF_BUFSIZE, "oracle_%d_%d", major, minor);
         EvalContextClassPutHard(ctx, buf, "inventory,attribute_name=none,source=agent");
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent");
     }
 }
 
@@ -2164,6 +2179,11 @@ static int Linux_Redhat_Version(EvalContext *ctx)
         }
     }
 
+    if (minor >= 0)
+    {
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent,derived-from-file="RH_REL_FILENAME);
+    }
+
     return 0;
 }
 
@@ -2382,6 +2402,11 @@ static int Linux_Suse_Version(EvalContext *ctx)
         }
     }
 
+    if (minor >= 0)
+    {
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent");
+    }
+
     Log(LOG_LEVEL_VERBOSE, "Could not find a numeric OS release in %s", SUSE_REL_FILENAME);
 
     return 0;
@@ -2417,6 +2442,7 @@ static int Linux_Slackware_Version(EvalContext *ctx, char *filename)
         Log(LOG_LEVEL_VERBOSE, "This appears to be a Slackware %u.%u system.", major, minor);
         snprintf(classname, CF_MAXVARSIZE, "slackware_%u_%u", major, minor);
         EvalContextClassPutHard(ctx, classname, "inventory,attribute_name=none,source=agent");
+        SysOSVersionMinorPutInt(ctx, minor, "source=agent");
         /* Fall-through */
     case 1:
         Log(LOG_LEVEL_VERBOSE, "This appears to be a Slackware %u system.", major);
@@ -2624,6 +2650,10 @@ static int Linux_Debian_Version(EvalContext *ctx)
                 "inventory,attribute_name=none,source=agent,derived-from-file="DEBIAN_ISSUE_FILENAME);
         }
     }
+    if (release >= 0)
+    {
+        SysOSVersionMinorPutInt(ctx, release, "source=agent,derived-from-file="DEBIAN_ISSUE_FILENAME);
+    }
 
     return 0;
 }
@@ -2755,6 +2785,8 @@ static int Linux_Mandriva_Version_Real(EvalContext *ctx, char *filename, char *r
             strcat(classbuf, "_");
             strcat(classbuf, strminor);
             EvalContextClassPutHard(ctx, classbuf, "inventory,attribute_name=none,source=agent");
+
+            SysOSVersionMinorPutInt(ctx, minor, "source=agent");
         }
     }
 
@@ -2907,6 +2939,7 @@ static int VM_Version(EvalContext *ctx)
             snprintf(classbuf, CF_BUFSIZE, "VMware ESX Server %d.%d.%d", major, minor, bug);
             EvalContextClassPutHard(ctx, classbuf, "inventory,attribute_name=none,source=agent");
             sufficient = 1;
+            SysOSVersionMinorPutInt(ctx, minor, "source=agent");
         }
         else if (sscanf(buffer, "VMware ESX Server %255s", version) > 0)
         {
@@ -3784,6 +3817,68 @@ static void SysOsVersionMajor(EvalContext *ctx)
 
 /*****************************************************************************/
 
+static void SysOSVersionMinorPutFromOSReleaseVersionID(EvalContext *ctx, char *name, char *version_id, char *tags)
+{
+    assert(version_id != NULL);
+    Item *version_tuple = SplitString(version_id, '_');
+
+    if (version_tuple == NULL)
+    {
+        return;
+    }
+    if (name != NULL && (StringStartsWith(name, "solaris") || StringStartsWith(name, "sunos")))
+    {
+        SysOSVersionMinorPut(ctx, version_tuple->name, tags);
+        DeleteItemList(version_tuple);
+        return;
+    }
+    if (version_tuple->next == NULL)
+    {
+        DeleteItemList(version_tuple);
+        return;
+    }
+    SysOSVersionMinorPut(ctx, version_tuple->next->name, tags);
+    DeleteItemList(version_tuple);
+}
+
+static void SysOSVersionMinorPutInt(EvalContext *ctx, int minor, char *tags)
+{
+    char strminor[PRINTSIZE(minor)];
+    xsnprintf(strminor, sizeof(strminor), "%d", minor);
+
+    SysOSVersionMinorPut(ctx, strminor, tags);
+}
+
+static void SysOSVersionMinorPut(EvalContext *ctx, char *strminor, char *tags)
+{
+    EvalContextVariablePutSpecial(ctx,
+        SPECIAL_SCOPE_SYS,
+        "os_version_minor",
+        strminor,
+        CF_DATA_TYPE_STRING,
+        tags
+    );
+}
+
+static void SysOsVersionMinorSetDefault(EvalContext *ctx)
+{
+    DataType type_out;
+    const char *value = (const char *) EvalContextVariableGetSpecial(
+        ctx, SPECIAL_SCOPE_SYS, "os_version_minor", &type_out);
+    if (value == NULL)
+    {
+        EvalContextVariablePutSpecial(ctx,
+            SPECIAL_SCOPE_SYS,
+            "os_version_minor",
+            "Unknown",
+            CF_DATA_TYPE_STRING,
+            "source=agent"
+        );
+    }
+}
+
+/*****************************************************************************/
+
 void DetectEnvironment(EvalContext *ctx)
 {
     GetNameInfo3(ctx);
@@ -3796,4 +3891,5 @@ void DetectEnvironment(EvalContext *ctx)
     GetDefVars(ctx);
     SysOSNameHuman(ctx);
     SysOsVersionMajor(ctx);
+    SysOsVersionMinorSetDefault(ctx);
 }