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41e3bad341
Adds BSD sysdep. Adds support for MAKE variable, overriding make command in our build scripts. Fixes more files not ending with newline. This was SVN commit r10994.
73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/* Copyright (c) 2012 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "precompiled.h"
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#include "lib/sysdep/sysdep.h"
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#define GNU_SOURCE
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#include "mocks/dlfcn.h"
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#include "mocks/unistd.h"
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#include <cstdio>
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OsPath sys_ExecutablePathname()
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{
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// Find the executable's filename
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Dl_info dl_info;
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memset(&dl_info, 0, sizeof(dl_info));
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if (!T::dladdr((void *)sys_ExecutablePathname, &dl_info) || !dl_info.dli_fname)
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return OsPath();
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const char* path = dl_info.dli_fname;
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// If this looks like an absolute path, use realpath to get the normalized
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// path (with no '.' or '..')
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if (path[0] == '/')
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{
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char resolved[PATH_MAX];
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if (!realpath(path, resolved))
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return OsPath();
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return resolved;
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}
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// If this looks like a relative path, resolve against cwd and use realpath
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if (strchr(path, '/'))
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{
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char cwd[PATH_MAX];
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if (!T::getcwd(cwd, PATH_MAX))
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return OsPath();
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char absolute[PATH_MAX];
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int ret = snprintf(absolute, PATH_MAX, "%s/%s", cwd, path);
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if (ret < 0 || ret >= PATH_MAX)
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return OsPath(); // path too long, or other error
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char resolved[PATH_MAX];
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if (!realpath(absolute, resolved))
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return OsPath();
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return resolved;
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}
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// If it's not a path at all, i.e. it's just a filename, we'd
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// probably have to search through PATH to find it.
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// That's complex and should be uncommon, so don't bother.
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return OsPath();
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}
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