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/* -*- mode: c; c-file-style: "bsd"; -*- */
/*
Copyright (C) 2004 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <sys/mman.h>
#include "unlock.h"
#include "internal.h"
static char* blacklist[] = {
"/libgtk",
"/libqt",
"/libfltk",
"/wine/",
NULL
};
static char* whitelist[] = {
"/libc-",
"/libardour",
NULL
};
static char* library_roots[] = {
"/lib",
"/usr/lib",
"/usr/local/lib",
"/usr/X11R6/lib",
"/opt/lib", /* solaris-y */
"/opt/local/lib", /* common on OS X */
NULL
};
void
cleanup_mlock ()
{
FILE* map;
size_t start;
size_t end;
char path[PATH_MAX + 1];
int unlock;
int i;
int whoknows;
int looks_like_library;
snprintf (path, sizeof(path), "/proc/%d/maps", getpid ());
if ((map = fopen (path, "r")) == NULL) {
jack_error ("can't open map file");
return;
}
while (!feof (map)) {
unlock = 0;
if (fscanf (map, "%zx-%zx %*s %*x %*d:%*d %d",
&start, &end, &whoknows) != 3) {
break;
}
if (!whoknows) {
continue;
}
fscanf (map, " %[^\n]", path);
/* if it doesn't look like a library, forget it */
looks_like_library = 0;
for (i = 0; library_roots[i]; ++i) {
if ((looks_like_library = (strstr (path, library_roots[i]) == path))) {
break;
}
}
if (!looks_like_library) {
continue;
}
for (i = 0; blacklist[i]; ++i) {
if (strstr (path, blacklist[i])) {
unlock = 1;
break;
}
}
if (end - start > 1048576) {
unlock = 1;
}
for (i = 0; whitelist[i]; ++i) {
if (strstr (path, whitelist[i])) {
unlock = 0;
break;
}
}
if (unlock) {
jack_info ("unlocking %s", path);
munlock ((char*)start, end - start);
}
}
fclose (map);
}
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