tree 50412a2845eed6bfaad9898ddb5abb030c76d993
parent 785e161dd8e0e44fa79c02fad34fb3992a7c81e4
author chenxinyuanchen <chenxinyuanchen@xiaomi.corp-partner.google.com> 1713513503 +0800
committer Chen xinyuan <chenxinyuanchen@xiaomi.corp-partner.google.com> 1713768269 +0000

linker: use realpath instead of readlink when getting the symlink path

Fix the issue if link for an symlink that point to an relative path
cause the linker can not find the right absolute path.

For example:
lrwxr-xr-x 1 root shell 13 2009-01-01 08:00 /system/bin/app_process -> app_process64

the '/system/bin/app_process' is symlinked to 'app_process64' and will be failed.

if the 'exe_to_load' is null and also failed when stat '/proc/self/exe'
will entered this path.

Without Patch:
  [ Linking executable "app_process64" ]
  linker: CANNOT LINK EXECUTABLE "/system/bin/app_process": library "libnativeloader.so" not found: needed by main executable

With Patch:
  [ Linking executable "/system/bin/app_process64" ]
  [ Using config section "system" ]
  [ Jumping to _start (0x75593c3000)... ]

Test: Manual - Run app_process (symlinked to app_process64)

Change-Id: Iacd0a810a679e8d55d68d7e4c84f0e5e4f276b14
Signed-off-by: chenxinyuanchen <chenxinyuanchen@xiaomi.com>
Signed-off-by: chenxinyuanchen <chenxinyuanchen@xiaomi.corp-partner.google.com>