src/libexec/rtld-elf/libmap.h, branch releng/12.4

MFC r339877-r339879,r343564-r343566,r343580,r343754:

2019-02-11T15:02:02Z

Untangle jemalloc and mutexes initialization. The merge includes required warnings cleanup by arichardson, both to avoid conflicts and to make rtld_malloc.c compilable with the libthr WARNS settings.

Make the directory mapping functionality, which was previously only

2013-09-21T21:03:52Z

available in 32-bit compatibility mode, unconditional. Overhaul the man page, which had evolved more by accretion than by design. Approved by: re (gjb) MFC after: 3 weeks

Description from Dan:

2005-02-04T02:46:41Z

Another handy libmap patch. Lets you do stuff like this: LD_LIBMAP="libpthread.so.1=libthr.so.1" mythreadedapp If you already have a program-specific override in libmap.conf, note that you must use a program-specific override in LD_LIBMAP: LD_LIBMAP="[mythreadedapp],libpthread.so.1=libthr.so.1" mythreadedapp PR: bin/74471 Submitted by: Dan Nelson MFC after: 2 weeks

Add initial support for compiling a special 32 bit version of

2004-03-21T01:21:26Z

ld-elf.so.1 on 64 bit systems. Most of this involves using alternate paths, environment variables and diagnostic messages. The build glue is seperate.

Change libmap.c:lm_init() to return a status value; 0 for success

2003-09-13T21:43:08Z

(libmap available) and 1 for failure. Assign this return to the global 'libmap_disable' variable in rtld.c. This totally prevents any libmap functions from being called after lm_init() if no config file is present.

Dynamic object dependency mapping: libmap.

2003-04-07T16:21:26Z

This is an optional feature, disabled by default. This will be useful to people testing the various POSIX threading libraries under -CURRENT but can easily serve other needs.