+++ /dev/null
-/*
- * 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.
- *
- * This part does the lookup of the info.
- *
- * Version: $Id: rquota_server.c,v 2.9 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <rpc/rpc.h>
-#include "rquota.h"
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-/* Unfortunately we cannot trust sys/quota.h to have
- * what we need, either the old interface could be missing
- * (SLES9) or the new (SLES8 and others).
- * So we will just put it explicitly below
- */
-#if 0
-#include <sys/quota.h>
-#endif
-#include <sys/mount.h>
-#include <dirent.h>
-#include <paths.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include "mntent.h"
-#include "xmalloc.h"
-
-#define TYPE_EXTENDED 0x01
-#define ACTIVE 0x02
-
-#ifndef MNTTYPE_AUTOFS
-#define MNTTYPE_AUTOFS "autofs"
-#endif
-
-#ifndef BLOCK_SIZE
-#define BLOCK_SIZE 1024
-#endif
-
-#define MAXQUOTAS 2
-#define USRQUOTA 0 /* element used for user quotas */
-#define GRPQUOTA 1 /* element used for group quotas */
-
-struct dqblk {
- u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */
- u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */
- u_int32_t dqb_curblocks; /* current block count */
- u_int32_t dqb_ihardlimit; /* maximum # allocated inodes */
- u_int32_t dqb_isoftlimit; /* preferred inode limit */
- u_int32_t dqb_curinodes; /* current # allocated inodes */
- time_t dqb_btime; /* time limit for excessive disk use */
- time_t dqb_itime; /* time limit for excessive files */
-};
-
-struct if_dqblk {
- u_int64_t dqb_bhardlimit;
- u_int64_t dqb_bsoftlimit;
- u_int64_t dqb_curspace;
- u_int64_t dqb_ihardlimit;
- u_int64_t dqb_isoftlimit;
- u_int64_t dqb_curinodes;
- u_int64_t dqb_btime;
- u_int64_t dqb_itime;
- u_int32_t dqb_valid;
-};
-
-#define SUBCMDMASK 0x00ff
-#define SUBCMDSHIFT 8
-#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
-
-#define Q_GETQUOTA 0x0300 /* get limits and usage */
-#define Q_SETQUOTA 0x0400 /* set limits and usage */
-
-#define Q_GETFMT 0x800004 /* get quota format used on given filesystem */
-#define Q_GETQUOTA_NEW 0x800007 /* get user quota structure */
-#define Q_SETQUOTA_NEW 0x800008 /* set user quota structure */
-#define dqoff(UID) ((loff_t)((UID) * sizeof (struct dqblk)))
-
-extern int quotactl (int __cmd, const char *__special, int __id,
- caddr_t __addr) __THROW;
-/*
- * Global unix authentication credentials.
- */
-extern struct authunix_parms *unix_cred;
-
-int in_group (gid_t *gids, u_int len, gid_t gid)
-{
- int cnt = 0;
-
- while (cnt < len) {
- if (gids[cnt] == gid)
- return 1;
- cnt++;
- }
- return 0;
-}
-
-getquota_rslt *getquotainfo(int flags, caddr_t *argp, struct svc_req *rqstp)
-{
- static getquota_rslt result;
- union {
- getquota_args *args;
- ext_getquota_args *ext_args;
- } arguments;
- FILE *fp;
- struct mntent *mnt;
- char *pathname, *qfpathname;
- int fd, err, id, type;
- struct stat stm, stn;
- struct rquota *rquota;
- struct if_dqblk dqb;
-
- /*
- * First check authentication.
- */
- if (flags & TYPE_EXTENDED) {
- arguments.ext_args = (ext_getquota_args *)argp;
- id = arguments.ext_args->gqa_id;
- type = arguments.ext_args->gqa_type;
- pathname = arguments.ext_args->gqa_pathp;
-
- if (type == USRQUOTA && unix_cred->aup_uid && unix_cred->aup_uid != id) {
- result.status = Q_EPERM;
- return(&result);
- }
-
- if (type == GRPQUOTA && unix_cred->aup_uid && unix_cred->aup_gid != id &&
- !in_group((gid_t *)unix_cred->aup_gids, unix_cred->aup_len, id)) {
- result.status = Q_EPERM;
- return(&result);
- }
- } else {
- arguments.args = (getquota_args *)argp;
- id = arguments.args->gqa_uid;
- type = USRQUOTA;
- pathname = arguments.args->gqa_pathp;
-
- if (unix_cred->aup_uid && unix_cred->aup_uid != id) {
- result.status = Q_EPERM;
- return(&result);
- }
- }
-
- fp = setmntent(MNTTAB, "r");
- while ((mnt = getmntent(fp)) != (struct mntent *)0) {
- if (stat(mnt->mnt_dir, &stm) == -1)
- continue;
-
- if (stat(pathname, &stn) == -1)
- break;
- else if (stm.st_dev != stn.st_dev)
- continue;
-
- if (mnt->mnt_fsname [0] != '/'
- || strcasecmp (mnt->mnt_type, MNTTYPE_NFS) == 0
- || strcasecmp (mnt->mnt_type, MNTTYPE_AUTOFS) == 0
- || strcasecmp (mnt->mnt_type, MNTTYPE_SWAP) == 0
- || strcasecmp (mnt->mnt_type, MNTTYPE_IGNORE) == 0)
- break;
-
- /* All blocks reported are in BLOCK_SIZE. */
- result.getquota_rslt_u.gqr_rquota.rq_bsize = BLOCK_SIZE;
-
- if (hasquota(mnt, type, &qfpathname)) {
- int fmt;
- if (quotactl(QCMD(Q_GETFMT, type), mnt->mnt_fsname, 0, (caddr_t)&fmt)==0) {
- /* new style interface
- * Don't bother trying to read from the file
- */
- err = quotactl(QCMD(Q_GETQUOTA_NEW, type),
- mnt->mnt_fsname, id, (caddr_t)&dqb);
- if (err) memset(&dqb, 0, sizeof(dqb));
- } else {
- /* old style */
- struct dqblk dq_dqb;
-
- if ((err = quotactl(QCMD(Q_GETQUOTA, type), mnt->mnt_fsname,
- id, (caddr_t)&dq_dqb)) == -1
- && !(flags & ACTIVE)) {
- if ((fd = open(qfpathname, O_RDONLY)) < 0)
- {
- free(qfpathname);
- continue;
- }
- lseek(fd, (long) dqoff(id), L_SET);
- switch (read(fd, &dq_dqb, sizeof(struct dqblk))) {
- case 0:/* EOF */
- /*
- * Convert implicit 0 quota (EOF) into an
- * explicit one (zero'ed dqblk)
- */
- memset((caddr_t)&dq_dqb, 0, sizeof(struct dqblk));
- break;
- case sizeof(struct dqblk): /* OK */
- break;
- default: /* ERROR */
- close(fd);
- free(qfpathname);
- continue;
- }
- close(fd);
- }
- dqb.dqb_bhardlimit = dq_dqb.dqb_bhardlimit;
- dqb.dqb_bsoftlimit = dq_dqb.dqb_bsoftlimit;
- dqb.dqb_curspace = dq_dqb.dqb_curblocks * 1024;
- dqb.dqb_ihardlimit = dq_dqb.dqb_ihardlimit;
- dqb.dqb_isoftlimit = dq_dqb.dqb_isoftlimit;
- dqb.dqb_curinodes = dq_dqb.dqb_curinodes;
- dqb.dqb_btime = dq_dqb.dqb_btime;
- dqb.dqb_itime = dq_dqb.dqb_itime;
- }
- free(qfpathname);
- endmntent(fp);
-
- if (err && (flags & ACTIVE)) {
- result.status = Q_NOQUOTA;
- return(&result);
- }
-
- result.status = Q_OK;
- result.getquota_rslt_u.gqr_rquota.rq_active = (err == 0) ? TRUE : FALSE;
- /*
- * Make a copy of the info into the last part of the remote quota
- * struct might not be exactly the same on all architectures...
- */
-
- rquota = &result.getquota_rslt_u.gqr_rquota;
- rquota->rq_bhardlimit = dqb.dqb_bhardlimit;
- rquota->rq_bsoftlimit = dqb.dqb_bsoftlimit;;
- rquota->rq_curblocks = dqb.dqb_curspace/1024;
- rquota->rq_fhardlimit = dqb.dqb_ihardlimit;
- rquota->rq_fsoftlimit = dqb.dqb_isoftlimit;
- rquota->rq_curfiles = dqb.dqb_curinodes;
- rquota->rq_btimeleft = dqb.dqb_btime;
- rquota->rq_ftimeleft = dqb.dqb_itime;
-
- return(&result);
- }
- }
- endmntent(fp);
-
- result.status = Q_NOQUOTA;
- return(&result);
-}
-
-getquota_rslt *rquotaproc_getquota_1_svc(getquota_args *argp, struct svc_req *rqstp)
-{
- return(getquotainfo(0, (caddr_t *)argp, rqstp));
-}
-
-getquota_rslt *rquotaproc_getactivequota_1_svc(getquota_args *argp, struct svc_req *rqstp)
-{
- return(getquotainfo(ACTIVE, (caddr_t *)argp, rqstp));
-}
-
-getquota_rslt *rquotaproc_getquota_2_svc(ext_getquota_args *argp, struct svc_req *rqstp)
-{
- return(getquotainfo(TYPE_EXTENDED, (caddr_t *)argp, rqstp));
-}
-
-getquota_rslt *rquotaproc_getactivequota_2_svc(ext_getquota_args *argp, struct svc_req *rqstp)
-{
- return(getquotainfo(TYPE_EXTENDED | ACTIVE, (caddr_t *)argp, rqstp));
-}
projects / nfs-utils.git / blobdiff