www.delorie.com/gnu/docs/dld/dld_5.html   search  
 
Buy GNU books!


Dld

[ < ] [ > ]   [ << ] [ Up ] [ >> ]         [Top] [Contents] [Index] [ ? ]

3.1.1 Locating the Executable File

The path name of the executing process as required by dld_init might not be easily obtained all the time. Not all systems pass the entire path name of the executable file as the first argument (argv[0]) to main. In order to obtain the full path of the executable file, dld_init uses the dld_find_program function.

Function: char *dld_find_progname (const char *progname)
dld_find_progname returns the absolute path name of the file that would be executed if command were given as a command. It looks up the environment variable PATH, searches in each of the directory listed for progname, and returns the absolute path name for the first occurrence.

Note: If the current process is executed using the execve call without passing the correct path name as argument 0, dld_find_program (argv[0]) will also fail to locate the executable file.

dld_find_executable returns zero if command is not found in any of the directories listed in PATH.


  webmaster   donations   bookstore     delorie software   privacy  
  Copyright 2003   by The Free Software Foundation     Updated Jun 2003