ANDROID: af_unix: Provide ABI fixes for recently introduced 'struct scm_fp_list' attribute 'inflight'

Adding new attributes to the ABI protected 'struct scm_fp_list' changes
the offsets of the fields already present in the structure which could
cause issues if modules already have a copy and are unaware of the
changes.  Let's add it to the end of the structure, under the protection
of __GENKSYMS__ as is SOP.

Bug: 404256079
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I776f47b1268a44bfd3d890797d5031af145f2782

android/abi_gki_aarch64.stg

@@ -71111,10 +71111,10 @@ member {
   type_id: 0x0484940b
 }
 member {
-  id: 0x11d6ba75
+  id: 0x11d6bda9
   name: "count_unix"
   type_id: 0xb0312d5a
-  offset: 16512
+  offset: 16576
 }
 member {
   id: 0x20014498
@@ -86203,10 +86203,10 @@ member {
   offset: 1728
 }
 member {
-  id: 0x76d74bd1
+  id: 0x76d74733
   name: "edges"
   type_id: 0x1df3293f
-  offset: 16448
+  offset: 16512
 }
 member {
   id: 0x31c31f3f
@@ -112759,6 +112759,12 @@ member {
   type_id: 0xd3c80119
   offset: 2752
 }
+member {
+  id: 0x799ec517
+  name: "inflight"
+  type_id: 0x6d7f5ff6
+  offset: 16320
+}
 member {
   id: 0x79c0c441
   name: "inflight"
@@ -212702,10 +212708,10 @@ member {
   offset: 16
 }
 member {
-  id: 0x7b11d7cc
+  id: 0x7b11d1cc
   name: "vertices"
   type_id: 0xd3c80119
-  offset: 16320
+  offset: 16384
 }
 member {
   id: 0x444fc004
@@ -266989,14 +266995,15 @@ struct_union {
   kind: STRUCT
   name: "scm_fp_list"
   definition {
-    bytesize: 2072
+    bytesize: 2080
     member_id: 0x65956ee9
     member_id: 0x97463852
     member_id: 0x042a2402
     member_id: 0x5449f846
-    member_id: 0x7b11d7cc
-    member_id: 0x76d74bd1
-    member_id: 0x11d6ba75
+    member_id: 0x799ec517
+    member_id: 0x7b11d1cc
+    member_id: 0x76d74733
+    member_id: 0x11d6bda9
   }
 }
 struct_union {

android/abi_gki_aarch64.stg.allowed_breaks

@@ -157,3 +157,9 @@ type 'struct scm_fp_list' changed
   member 'short count_unix' changed
     offset changed by 64
 
+type 'struct scm_fp_list' changed
+  byte size changed from 2072 to 2080
+  member 'bool inflight' was added
+  3 members ('struct list_head vertices' .. 'short count_unix') changed
+    offset changed by 64
+

include/net/scm.h

@@ -29,13 +29,11 @@ struct unix_edge;
 struct scm_fp_list {
 	short			count;
 	short			max;
-#ifdef CONFIG_UNIX
-	bool			inflight;
-#endif
 	struct user_struct	*user;
 	struct file		*fp[SCM_MAX_FD];
 #ifndef __GENKSYMS__
 #ifdef CONFIG_UNIX
+	bool			inflight;
 	struct list_head	vertices;
 	struct unix_edge        *edges;
 #endif