76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
|
|
* This file is part of 0 A.D.
|
|
*
|
|
* 0 A.D. is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 0 A.D. is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "precompiled.h"
|
|
|
|
#include "lib/sysdep/sysdep.h"
|
|
#include "lib/external_libraries/boost_filesystem.h"
|
|
|
|
#define GNU_SOURCE
|
|
#include "mocks/dlfcn.h"
|
|
#include "mocks/unistd.h"
|
|
|
|
LibError sys_get_executable_name(char* n_path, size_t max_chars)
|
|
{
|
|
const char* path;
|
|
Dl_info dl_info;
|
|
|
|
// Find the executable's filename
|
|
memset(&dl_info, 0, sizeof(dl_info));
|
|
if (!T::dladdr((void *)sys_get_executable_name, &dl_info) ||
|
|
!dl_info.dli_fname )
|
|
{
|
|
return ERR::NO_SYS;
|
|
}
|
|
path = dl_info.dli_fname;
|
|
|
|
// If this looks like an absolute path, use realpath to get the normalized
|
|
// path (with no '.' or '..')
|
|
if (path[0] == '/') {
|
|
char* resolved = realpath(path, NULL);
|
|
if (!resolved)
|
|
return ERR::NO_SYS;
|
|
strncpy(n_path, resolved, max_chars);
|
|
free(resolved);
|
|
return INFO::OK;
|
|
}
|
|
|
|
// If this looks like a relative path, resolve against cwd and use realpath
|
|
if (strchr(path, '/')) {
|
|
char cwd[PATH_MAX];
|
|
if (!T::getcwd(cwd, PATH_MAX))
|
|
return ERR::NO_SYS;
|
|
|
|
char absolute[PATH_MAX];
|
|
int ret = snprintf(absolute, PATH_MAX, "%s/%s", cwd, path);
|
|
if (ret < 0 || ret >= PATH_MAX)
|
|
return ERR::NO_SYS; // path too long, or other error
|
|
char* resolved = realpath(absolute, NULL);
|
|
if (!resolved)
|
|
return ERR::NO_SYS;
|
|
|
|
strncpy(n_path, resolved, max_chars);
|
|
free(resolved);
|
|
return INFO::OK;
|
|
}
|
|
|
|
// If it's not a path at all, i.e. it's just a filename, we'd
|
|
// probably have to search through PATH to find it.
|
|
// That's complex and should be uncommon, so don't bother.
|
|
return ERR::NO_SYS;
|
|
}
|