Type:
Class
Constants:
NEXT
:
Document-const
NEXT
A predefined pseudo-handle of RTLD_NEXT
Which will find the next occurrence of a function in the search order after the current library.
DEFAULT
:
Document-const
DEFAULT
A predefined pseudo-handle of RTLD_DEFAULT
Which will find the first occurrence of the desired symbol using the default library search order
The DL::Handle is the manner to access the dynamic library
Example
Setup
1 2 3 4 | libc_so = "/lib64/libc.so.6"=> "/lib64/libc.so.6"@handle = DL::Handle.new(libc_so)=> #<DL::Handle:0x00000000d69ef8> |
Setup, with flags
1 2 3 4 | libc_so = "/lib64/libc.so.6"=> "/lib64/libc.so.6"@handle = DL::Handle.new(libc_so, DL::RTLD_LAZY | DL::RTLD_GLOBAL)=> #<DL::Handle:0x00000000d69ef8> |
Addresses to symbols
1 2 | strcpy_addr = @handle['strcpy']=> 140062278451968 |
or
1 2 | strcpy_addr = @handle.sym('strcpy')=> 140062278451968 |