[RFC][PATCH v3 1/6] Declare and describe the dlmopen RTLD_SHARED flag

[Vivek Das Mohapatra <vivek at collabora dot com>]

This flag will instruct dlmopen to create a shared object present
in the main namespace and accessible from the selected namespace
when supplied in the MODE argument.
---
 bits/dlfcn.h              | 7 +++++++
 sysdeps/mips/bits/dlfcn.h | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/bits/dlfcn.h b/bits/dlfcn.h
index b0b129b66b..52ce898343 100644
--- a/bits/dlfcn.h
+++ b/bits/dlfcn.h
@@ -32,6 +32,13 @@
    visible as if the object were linked directly into the program.  */
 #define RTLD_GLOBAL	0x00100
 
+/* If the following bit is set in the MODE argument to dlmopen
+   then the target object is loaded into the main namespace (if
+   it is not already there) and a shallow copy (proxy) is placed
+   in the target namespace: This allows multiple namespaces to
+   share a single instance of a DSO.  */
+#define RTLD_SHARED 0x00080
+
 /* Unix98 demands the following flag which is the inverse to RTLD_GLOBAL.
    The implementation does this by default and so we can define the
    value to zero.  */
diff --git a/sysdeps/mips/bits/dlfcn.h b/sysdeps/mips/bits/dlfcn.h
index 471ab4fdda..32744ef196 100644
--- a/sysdeps/mips/bits/dlfcn.h
+++ b/sysdeps/mips/bits/dlfcn.h
@@ -32,6 +32,13 @@
    visible as if the object were linked directly into the program.  */
 #define RTLD_GLOBAL	0x0004
 
+/* If the following bit is set in the MODE argument to dlmopen
+   then the target object is loaded into the main namespace (if
+   it is not already there) and a shallow copy (proxy) is placed
+   in the target namespace: This allows multiple namespaces to
+   share a single instance of a DSO.  */
+#define RTLD_SHARED 0x00020
+
 /* Unix98 demands the following flag which is the inverse to RTLD_GLOBAL.
    The implementation does this by default and so we can define the
    value to zero.  */
-- 
2.11.0