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/*
* QUOTA An implementation of the diskquota system for the LINUX
* operating system. QUOTA is implemented using the BSD systemcall
* interface as the means of communication with the user level.
* Should work for all filesystems because of integration into the
* VFS layer of the operating system.
* This is based on the Melbourne quota system wich uses both user and
* group quota files.
*
* Determines if a filesystem has quota enabled and how the quotafile
* is named.
*
* Version: $Id: hasquota.c,v 2.6 1996/11/17 16:59:46 mvw Exp mvw $
*
* Author: Marco van Wieringen <mvw@planets.elm.net>
*
* 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.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/quota.h>
#include <limits.h>
#include <string.h>
#include "mntent.h"
#include "xmalloc.h"
#undef min
#define min(x,y) ((x) < (y)) ? (x) : (y)
#define CORRECT_FSTYPE(type) \
(!strcmp(type,MNTTYPE_EXT2))
char *qfextension[] = INITQFNAMES;
/*
* Check to see if a particular quota is to be enabled.
*/
int
hasquota(struct mntent *mnt, int type, char **qfnamep)
{
char *qfname = QUOTAFILENAME;
char *option, *pathname;
if (!CORRECT_FSTYPE(mnt->mnt_type))
return (0);
if (((type == USRQUOTA) && (option = hasmntopt(mnt, MNTOPT_USRQUOTA)) != (char *)0) ||
((type == GRPQUOTA) && (option = hasmntopt(mnt, MNTOPT_GRPQUOTA)) != (char *)0)) {
if ((pathname = strchr(option, '=')) == (char *)0) {
*qfnamep=xmalloc(strlen(mnt->mnt_dir)+strlen(qfname)+strlen(qfextension[type])+2);
(void) sprintf(*qfnamep, "%s%s%s.%s", mnt->mnt_dir,
(mnt->mnt_dir[strlen(mnt->mnt_dir) - 1] == '/') ? "" : "/",
qfname, qfextension[type]);
} else {
if ((option = strchr(++pathname, ',')) != (char *)NULL) {
int len=option-pathname;
*qfnamep=xmalloc(len);
memcpy(*qfnamep, pathname, len-1);
(*qfnamep) [len-1] = '\0';
}
else {
*qfnamep=xstrdup(pathname);
}
}
return (1);
} else
return (0);
}
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