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* Resolve symlinks to the binary. This prevents the situation where a symlink

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to ioq3 in e.g. /usr/local/bin/ cannot locate the data files since it thinks
  /usr/local/bin/ is the directory the actual binary sits.
This commit is contained in:
Tim Angus 2006-02-26 18:44:15 +00:00
parent d5509dcd35
commit c93d8fc185
1 changed files with 50 additions and 2 deletions
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52
code/unix/unix_main.c
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@ -1335,6 +1335,54 @@ void Sys_PrintBinVersion( const char* name ) {
fprintf( stdout, "%s\n\n", sep );
}
/*
=================
Sys_BinName
This resolves any symlinks to the binary. It's disabled for debug
builds because there are situations where you are likely to want
to symlink to binaries and /not/ have the links resolved.
=================
*/
char *Sys_BinName( const char *arg0 )
{
#ifdef NDEBUG
int n;
char src[ PATH_MAX ];
char dir[ PATH_MAX ];
qboolean links = qfalse;
#endif
static char dst[ PATH_MAX ];
Q_strncpyz( dst, arg0, PATH_MAX );
#ifdef NDEBUG
while( ( n = readlink( dst, src, PATH_MAX ) ) >= 0 )
{
src[ n ] = '\0';
Q_strncpyz( dir, dirname( dst ), PATH_MAX );
Q_strncpyz( dst, dir, PATH_MAX );
Q_strcat( dst, PATH_MAX, "/" );
Q_strcat( dst, PATH_MAX, src );
links = qtrue;
}
if( links )
{
Q_strncpyz( dst, Sys_Cwd( ), PATH_MAX );
Q_strcat( dst, PATH_MAX, "/" );
Q_strcat( dst, PATH_MAX, dir );
Q_strcat( dst, PATH_MAX, "/" );
Q_strcat( dst, PATH_MAX, src );
}
#endif
return dst;
}
void Sys_ParseArgs( int argc, char* argv[] ) {
if ( argc==2 )
@ -1342,7 +1390,7 @@ void Sys_ParseArgs( int argc, char* argv[] ) {
if ( (!strcmp( argv[1], "--version" ))
|| ( !strcmp( argv[1], "-v" )) )
{
Sys_PrintBinVersion( argv[0] );
Sys_PrintBinVersion( Sys_BinName( argv[0] ) );
Sys_Exit(0);
}
}
@ -1365,7 +1413,7 @@ int main ( int argc, char* argv[] )
Sys_ParseArgs( argc, argv ); // bk010104 - added this for support
strncat(cdpath, argv[0], sizeof(cdpath)-1);
strncat(cdpath, Sys_BinName( argv[0] ), sizeof(cdpath)-1);
Sys_SetDefaultCDPath(dirname(cdpath));
Sys_SetDefaultInstallPath(DEFAULT_BASEDIR);