Add support to load versioned libraries

Linux libraries, including the ipmi plugins, can be versioned,
with suffix .so.*
Add support in ipmid to find and load versioned libraries.
There seems to not be an issue if ipmid loads the same library
twice (a non-versioned and versioned) as with the cases where
a symlink .so points to a .so.* library.

Change-Id: I96d73e90dfec01c1a830dab4e6c20797b6130528
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>

2 files changed, 11 insertions, 3 deletions

diff --git a/ipmid.C b/ipmid.C
index 374ede2..960f5dc 100644
--- a/ipmid.C
+++ b/ipmid.C
@@ -305,8 +305,14 @@ int handler_select(const struct dirent *entry)
     char dname_copy[4] = {0};
 
     // We want to avoid checking for everything and isolate to the ones having
-    // .so in them.
-    if(strstr(entry->d_name, IPMI_PLUGIN_EXTN))
+    // .so.* or .so in them.
+    // Check for versioned libraries .so.*
+    if(strstr(entry->d_name, IPMI_PLUGIN_SONAME_EXTN))
+    {
+        return 1;
+    }
+    // Check for non versioned libraries .so
+    else if(strstr(entry->d_name, IPMI_PLUGIN_EXTN))
     {
         // It is possible that .so could be anywhere in the string but unlikely
         // But being careful here. Get the base address of the string, move
diff --git a/ipmid.H b/ipmid.H
index 679392d..f465072 100644
--- a/ipmid.H
+++ b/ipmid.H
@@ -12,6 +12,8 @@ ipmi_ret_t ipmi_netfn_router(const ipmi_netfn_t, const ipmi_cmd_t, ipmi_request_
 
 // Plugin libraries need to _end_ with .so
 #define IPMI_PLUGIN_EXTN ".so"
+// Plugin libraries can be versioned with suffix .so.*
+#define IPMI_PLUGIN_SONAME_EXTN ".so."
 
 // The BT FIFO in the AST2400 can only handle 64 bytes.  
 // Can only allow 63 because the BT interface still 
@@ -22,4 +24,4 @@ extern FILE *ipmiio, *ipmidbus, *ipmicmddetails;
 
 int set_sensor_dbus_state_s(uint8_t , const char *, const char *);
 int set_sensor_dbus_state_y(uint8_t , const char *, const uint8_t);
-#endif
\ No newline at end of file
+#endif