179 lines
3.4 KiB
C++
179 lines
3.4 KiB
C++
/*
|
|
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.
|
|
|
|
$Id$
|
|
*/
|
|
#ifndef COMPILER_MSVC
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
#include <string>
|
|
#include <cstring>
|
|
#include <limits.h>
|
|
|
|
#include "pbd/mountpoint.h"
|
|
|
|
using std::string;
|
|
|
|
#ifdef WAF_BUILD
|
|
#include "libpbd-config.h"
|
|
#endif
|
|
|
|
#ifdef 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;
|
|
}
|
|
|
|
#elif defined(WIN32)
|
|
|
|
string
|
|
mountpoint (string path)
|
|
{
|
|
// TODO ... if needed
|
|
}
|
|
|
|
#else // !HAVE_GETMNTENT
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ucred.h>
|
|
#include <sys/mount.h>
|
|
|
|
string
|
|
mountpoint (string path)
|
|
{
|
|
struct statfs *mntbufp = 0;
|
|
int count;
|
|
unsigned int maxmatch = 0;
|
|
unsigned int matchlen;
|
|
const char *cpath = path.c_str();
|
|
char best[PATH_MAX+1];
|
|
|
|
/* From the manpage, under "BUGS" : "The memory allocated by getmntinfo() cannot be free(3)'d by the
|
|
application."
|
|
|
|
Thus: we do NOT try to free memory allocated by getmntinfo()
|
|
*/
|
|
|
|
if ((count = getmntinfo(&mntbufp, MNT_NOWAIT)) == 0) {
|
|
return "\0";
|
|
}
|
|
|
|
best[0] = '\0';
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
unsigned int n = 0;
|
|
matchlen = 0;
|
|
|
|
/* note: strcmp's semantics are not
|
|
strict enough to use for this.
|
|
*/
|
|
|
|
while (cpath[n] && mntbufp[i].f_mntonname[n]) {
|
|
if (cpath[n] != mntbufp[i].f_mntonname[n]) {
|
|
break;
|
|
}
|
|
matchlen++;
|
|
n++;
|
|
}
|
|
|
|
if (cpath[matchlen] == '\0') {
|
|
snprintf(best, sizeof(best), "%s", mntbufp[i].f_mntonname);
|
|
return best;
|
|
|
|
} else {
|
|
|
|
if (matchlen > maxmatch) {
|
|
snprintf (best, sizeof(best), "%s", mntbufp[i].f_mntonname);
|
|
maxmatch = matchlen;
|
|
}
|
|
}
|
|
}
|
|
|
|
return best;
|
|
}
|
|
#endif // HAVE_GETMNTENT
|
|
|
|
#ifdef TEST_MOUNTPOINT
|
|
|
|
main (int argc, char *argv[])
|
|
{
|
|
printf ("mp of %s = %s\n", argv[1], mountpoint (argv[1]).c_str());
|
|
exit (0);
|
|
}
|
|
|
|
#endif // TEST_MOUNTPOINT
|
|
|
|
#else // COMPILER_MSVC
|
|
const char* pbd_mountpoint = "pbd/msvc/mountpoint.cc takes precedence over this file";
|
|
#endif // COMPILER_MSVC
|