Fixed /proc/self/exe (and /proc/<MY_PID>/exe)

- Implemented a special mapping function for /proc, to be
  able to map the symlink at /proc/self/exe.
- This can be described as a countermeasure to side-effects of
  mapping exec parameters: /proc/self/exe (as well as
  /proc/<MY_PID>/exe, which is the same thing) need special care
  if the binary was started by anything else than direct exec.

Examples:
a) if CPU transparency is used, the real /proc/self/exe points
   to e.g. Qemu. Now SB2 can make it look like the link points
   to the binary which is running under qemu.
b) if "ld.so-start" was used, the real /proc/self/exe points to
   ld.so and not to the binary itself. Again, SB2 maps that
   to a symlink which points to the correct binary.

Other related things:
- all mapping modes use this feature now
- Lua <=> C interface version had to be incremented
- Lua mapping code <=> mapping rules version had to be incremented

1 files changed, 3 insertions, 3 deletions

diff --git a/lua_scripts/pathmaps/devel/00_default.lua b/lua_scripts/pathmaps/devel/00_default.lua
index 938b708..8c9e53a 100644
--- a/lua_scripts/pathmaps/devel/00_default.lua
+++ b/lua_scripts/pathmaps/devel/00_default.lua
@@ -8,7 +8,7 @@
 
 -- Rule file interface version, mandatory.
 --
-rule_file_interface_version = "17"
+rule_file_interface_version = "18"
 ----------------------------------
 
 tools = tools_root
@@ -461,7 +461,7 @@ simple_chain = {
 		-- -----------------------------------------------
 		-- 90. Top-level directories that must not be mapped:
 		{prefix = "/dev", use_orig_path = true},
-		{prefix = "/proc", use_orig_path = true},
+		{dir = "/proc", custom_map_funct = sb2_procfs_mapper},
 		{prefix = "/sys",
 		 use_orig_path = true, readonly = true},
 
@@ -514,7 +514,7 @@ qemu_chain = {
 		{prefix = "/tmp", map_to = session_dir},
 
 		{prefix = "/dev", use_orig_path = true},
-		{prefix = "/proc", use_orig_path = true},
+		{dir = "/proc", custom_map_funct = sb2_procfs_mapper},
 		{prefix = "/sys", use_orig_path = true},
 
 		{prefix = "/etc/resolv.conf",