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/*
Copyright (C) 2002 Paul Davis
This program 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.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <cstdio>
#include <string>
#include <limits.h>
#include <pbd/mountpoint.h>
using std::string;
#if HAVE_GETMNTENT
#include <mntent.h>
struct mntent_sorter {
bool operator() (const mntent *a, const mntent *b) {
return strcmp (a->mnt_dir, b->mnt_dir);
}
};
string
mountpoint (string path)
{
FILE *mntf;
mntent *mnt;
unsigned int maxmatch = 0;
unsigned int matchlen;
const char *cpath = path.c_str();
char best[PATH_MAX+1];
if ((mntf = setmntent ("/etc/mtab", "r")) == 0) {
return "";
}
best[0] = '\0';
while ((mnt = getmntent (mntf))) {
unsigned int n;
n = 0;
matchlen = 0;
/* note: strcmp's semantics are not
strict enough to use for this.
*/
while (cpath[n] && mnt->mnt_dir[n]) {
if (cpath[n] != mnt->mnt_dir[n]) {
break;
}
matchlen++;
n++;
}
if (cpath[matchlen] == '\0') {
endmntent (mntf);
return mnt->mnt_dir;
} else {
if (matchlen > maxmatch) {
snprintf (best, sizeof(best), "%s", mnt->mnt_dir);
maxmatch = matchlen;
}
}
}
endmntent (mntf);
return best;
}
#else // no getmntent()
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
string
mountpoint (string path)
{
//XXX IMPLEMENT ME using getmntinfo() or getfsstat().
return "/";
}
#endif
#ifdef TEST_MOUNTPOINT
main (int argc, char *argv[])
{
printf ("mp of %s = %s\n", argv[1], mountpoint (argv[1]).c_str());
exit (0);
}
#endif
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