s3:smbd: add a nfs backend for sysquotas.
authorMichael Adam <obnox@samba.org>
Fri, 6 Aug 2010 08:21:09 +0000 (10:21 +0200)
committerMichael Adam <obnox@samba.org>
Wed, 25 Aug 2010 12:05:51 +0000 (14:05 +0200)
This module is based on the Solaris/FreeBSD implementation
of NFS quotas in the quotas.c module.

It implements the SMB_USER_QUOTA_TYPE query of the
get_quotas call. The other types and the set_quota call
are not implemented.

source3/Makefile.in
source3/configure.in
source3/include/proto.h
source3/lib/sysquotas.c
source3/lib/sysquotas_nfs.c [new file with mode: 0644]

index 1d31f1a2735579c8f9b05d3741480932d138072a..d80c6c7eee2fd945674846e4cca53672c2472ebf 100644 (file)
@@ -838,6 +838,7 @@ SMBD_OBJ_SRV = smbd/server_reload.o \
               printing/printspoolss.o \
               lib/sysquotas.o lib/sysquotas_linux.o \
               lib/sysquotas_xfs.o lib/sysquotas_4A.o \
+              lib/sysquotas_nfs.o \
               smbd/fake_file.o \
               smbd/quotas.o smbd/ntquotas.o $(AFS_OBJ) smbd/msdfs.o \
               $(AFS_SETTOKEN_OBJ) smbd/aio.o smbd/statvfs.o \
index 02904800a35c78c7890a58c59c0987cc14bbe1bd..d8bf5543876a6f06b3943f70e1ba4fbe3fb5a0df 100644 (file)
@@ -5025,6 +5025,27 @@ AC_MSG_CHECKING(whether to use the new lib/sysquotas.c interface)
 fi
 fi
 
+if test x"$samba_cv_SYSQUOTA_FOUND" != x"no"; then
+AC_CACHE_CHECK([whether the sys_quota interface works with NFS],samba_cv_SYSQUOTA_WORKS_NFS,[
+SAVE_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS ${SAMBA_CONFIGURE_CPPFLAGS}"
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#define NO_PROTO_H 1
+#define NO_CONFIG_H 1
+#define HAVE_SYS_QUOTAS 1
+#define HAVE_NFS_QUOTAS 1
+#include "${srcdir-.}/lib/sysquotas_nfs.c"
+],[],samba_cv_SYSQUOTA_WORKS_NFS=yes,samba_cv_SYSQUOTA_WORKS_NFS=no)
+CPPFLAGS="$SAVE_CPPFLAGS"
+])
+if test x"$samba_cv_SYSQUOTA_WORKS_NFS" = x"yes"; then
+    if test x"$samba_cv_WE_USE_SYS_QUOTAS" = x"yes"; then
+       AC_DEFINE(HAVE_NFS_QUOTAS,1,[Whether nfs quota support is available])
+    fi
+fi
+fi
+
 if test x"$samba_cv_SYSQUOTA_FOUND" != x"no" -a x"$samba_cv_found_xfs_header" = x"yes"; then
 AC_CACHE_CHECK([whether the sys_quota interface works with XFS],samba_cv_SYSQUOTA_WORKS_XFS,[
 SAVE_CPPFLAGS="$CPPFLAGS"
index a3449799a862097014390f5aa794d302821eb71b..67718a954a424cef47e37e95383ddbdbf1ea152b 100644 (file)
@@ -968,6 +968,13 @@ int sys_set_vfs_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qt
 int sys_get_xfs_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
 int sys_set_xfs_quota(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
 
+int sys_get_nfs_quota(const char *path, const char *bdev,
+                     enum SMB_QUOTA_TYPE qtype,
+                     unid_t id, SMB_DISK_QUOTA *dp);
+int sys_set_nfs_quota(const char *path, const char *bdev,
+                     enum SMB_QUOTA_TYPE qtype,
+                     unid_t id, SMB_DISK_QUOTA *dp);
+
 /* The following definitions come from lib/system.c  */
 
 void *sys_memalign( size_t align, size_t size );
index 3d4697c7dc49c2ae61cb7dc49a54577474da904b..6abafbd768c3542a40d24fd29456d3a156c11659 100644 (file)
@@ -177,6 +177,9 @@ static struct {
 #ifdef HAVE_XFS_QUOTAS
        {"xfs", sys_get_xfs_quota,      sys_set_xfs_quota},
 #endif /* HAVE_XFS_QUOTAS */
+#ifdef HAVE_NFS_QUOTAS
+       {"nfs", sys_get_nfs_quota,      sys_set_nfs_quota},
+#endif /* HAVE_NFS_QUOTAS */
        {NULL,  NULL,                   NULL}
 };
 
diff --git a/source3/lib/sysquotas_nfs.c b/source3/lib/sysquotas_nfs.c
new file mode 100644 (file)
index 0000000..8272f53
--- /dev/null
@@ -0,0 +1,271 @@
+/* 
+   Unix SMB/CIFS implementation.
+   System QUOTA function wrappers for NFS
+   Copyright (C) Michael Adam 2010
+   
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_QUOTA
+
+#ifndef HAVE_SYS_QUOTAS
+#ifdef HAVE_NFS_QUOTAS
+#undef HAVE_NFS_QUOTAS
+#endif
+#endif
+
+#ifdef HAVE_NFS_QUOTAS
+
+/*
+ * nfs quota support
+ * This is based on the FreeBSD / SUNOS5 section of quotas.c
+ */
+
+#include <rpc/rpc.h>
+#include <rpc/types.h>
+#include <rpcsvc/rquota.h>
+#ifdef HAVE_RPC_NETTYPE_H
+#include <rpc/nettype.h>
+#endif
+#include <rpc/xdr.h>
+
+static int my_xdr_getquota_args(XDR *xdrsp, struct getquota_args *args)
+{
+       if (!xdr_string(xdrsp, &args->gqa_pathp, RQ_PATHLEN ))
+               return(0);
+       if (!xdr_int(xdrsp, &args->gqa_uid))
+               return(0);
+       return (1);
+}
+
+static int my_xdr_getquota_rslt(XDR *xdrsp, struct getquota_rslt *gqr)
+{
+       int quotastat;
+
+       if (!xdr_int(xdrsp, &quotastat)) {
+               DEBUG(6,("nfs_quotas: Status bad or zero\n"));
+               return 0;
+       }
+       gqr->status = quotastat;
+
+       if (!xdr_int(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_bsize)) {
+               DEBUG(6,("nfs_quotas: Block size bad or zero\n"));
+               return 0;
+       }
+       if (!xdr_bool(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_active)) {
+               DEBUG(6,("nfs_quotas: Active bad or zero\n"));
+               return 0;
+       }
+       if (!xdr_int(xdrsp, (int *)&gqr->getquota_rslt_u.gqr_rquota.rq_bhardlimit)) {
+               DEBUG(6,("nfs_quotas: Hardlimit bad or zero\n"));
+               return 0;
+       }
+       if (!xdr_int(xdrsp, (int *)&gqr->getquota_rslt_u.gqr_rquota.rq_bsoftlimit)) {
+               DEBUG(6,("nfs_quotas: Softlimit bad or zero\n"));
+               return 0;
+       }
+       if (!xdr_int(xdrsp, (int *)&gqr->getquota_rslt_u.gqr_rquota.rq_curblocks)) {
+               DEBUG(6,("nfs_quotas: Currentblocks bad or zero\n"));
+               return 0;
+       }
+       return (1);
+}
+
+
+int sys_get_nfs_quota(const char *path, const char *bdev,
+                     enum SMB_QUOTA_TYPE qtype,
+                     unid_t id, SMB_DISK_QUOTA *dp)
+{
+       CLIENT *clnt;
+       struct getquota_rslt gq_rslt;
+       struct getquota_args gq_args;
+       const char *mnttype;
+       char *cutstr, *pathname, *host, *testpath;
+       int len;
+       static struct timeval timeout = {2,0};
+       enum clnt_stat clnt_stat;
+
+       int ret = -1;
+       uint32 qflags = 0;
+
+       if (!path || !bdev || !dp) {
+               smb_panic("sys_get_nfs_quota: called with NULL pointer");
+       }
+
+       DEBUG(10, ("sys_get_nfs_quota: path[%s] bdev[%s] qtype[%d]\n",
+                  path, bdev, qtype));
+
+       ZERO_STRUCT(*dp);
+
+       dp->qtype = qtype;
+
+       if (qtype != SMB_USER_QUOTA_TYPE) {
+               DEBUG(3, ("sys_get_nfs_quota: got unsupported quota type '%d', "
+                         "only supported type is '%d' (SMB_USER_QUOTA_TYPE)\n",
+                         qtype, SMB_USER_QUOTA_TYPE));
+               errno = ENOSYS;
+               return -1;
+       }
+
+       mnttype = bdev;
+       len = strcspn(mnttype, ":");
+       pathname = strstr(mnttype, ":");
+       cutstr = (char *) SMB_MALLOC(len+1);
+       if (cutstr == NULL) {
+               errno = ENOMEM;
+               return -1;
+       }
+
+       memset(cutstr, '\0', len+1);
+       host = strncat(cutstr, mnttype, sizeof(char) * len);
+       testpath = strchr_m(mnttype, ':');
+       testpath++;
+       gq_args.gqa_pathp = testpath;
+       gq_args.gqa_uid = id.uid;
+
+       DEBUG(10, ("sys_get_nfs_quotas: Asking for quota of path '%s' on "
+                  "host '%s', rpcprog '%i', rpcvers '%i', network '%s'\n",
+                   host, testpath+1, RQUOTAPROG, RQUOTAVERS, "udp"));
+
+       clnt = clnt_create(host, RQUOTAPROG, RQUOTAVERS, "udp");
+       if (clnt == NULL) {
+               ret = -1;
+               goto out;
+       }
+
+       clnt->cl_auth = authunix_create_default();
+       if (clnt->cl_auth == NULL) {
+               DEBUG(3, ("sys_get_nfs_quotas: authunix_create_default "
+                         "failed\n"));
+               ret = -1;
+               goto out;
+       }
+
+       clnt_stat = clnt_call(clnt,
+                             RQUOTAPROC_GETQUOTA,
+                             (const xdrproc_t) my_xdr_getquota_args,
+                             (caddr_t)&gq_args,
+                             (const xdrproc_t) my_xdr_getquota_rslt,
+                             (caddr_t)&gq_rslt,
+                             timeout);
+
+       if (clnt_stat != RPC_SUCCESS) {
+               DEBUG(3, ("sys_get_nfs_quotas: clnt_call failed\n"));
+               ret = -1;
+               goto out;
+       }
+
+       DEBUG(10, ("sys_get_nfs_quotas: getquota_rslt:\n"
+                  "status       : '%i'\n"
+                  "bsize        : '%i'\n"
+                  "active       : '%s'\n"
+                  "bhardlimit   : '%u'\n"
+                  "bsoftlimit   : '%u'\n"
+                  "curblocks    : '%u'\n"
+                  "fhardlimit   : '%u'\n"
+                  "fsoftlimit   : '%u'\n"
+                  "curfiles     : '%u'\n"
+                  "btimeleft    : '%u'\n"
+                  "ftimeleft    : '%u'\n",
+                  gq_rslt.status,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_active?"yes":"no",
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_fhardlimit,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_fsoftlimit,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_curfiles,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_btimeleft,
+                  gq_rslt.getquota_rslt_u.gqr_rquota.rq_ftimeleft));
+
+       /*
+        * gqr.status returns
+        *   0 if the rpc call fails,
+        *   1 if quotas exist,
+        *   2 if there is no quota set, and
+        *   3 if no permission to get the quota.
+        */
+
+       switch (gq_rslt.status) {
+       case 0:
+               DEBUG(3, ("sys_get_nfs_quotas: Remote Quotas Failed! "
+                         "Error '%i'\n", gq_rslt.status));
+               ret = -1;
+               goto out;
+
+       case 1:
+               DEBUG(10, ("sys_get_nfs_quotas: Good quota data\n"));
+               dp->bsize = (uint64_t)gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsize;
+               dp->softlimit = gq_rslt.getquota_rslt_u.gqr_rquota.rq_bsoftlimit;
+               dp->hardlimit = gq_rslt.getquota_rslt_u.gqr_rquota.rq_bhardlimit;
+               dp->curblocks = gq_rslt.getquota_rslt_u.gqr_rquota.rq_curblocks;
+               break;
+
+       case 2:
+               DEBUG(5, ("sys_get_nfs_quotas: No quota set\n"));
+               SMB_QUOTAS_SET_NO_LIMIT(dp);
+               break;
+
+       case 3:
+               DEBUG(3, ("sys_get_nfs_quotas: no permission to get quota\n"));
+               errno = EPERM;
+               ret = -1;
+               goto out;
+
+       default:
+               DEBUG(5, ("sys_get_nfs_quotas: Unknown remote quota status "
+                         "code '%i'\n", gq_rslt.status));
+               ret = -1;
+               goto out;
+               break;
+       }
+
+       dp->qflags = qflags;
+
+       ret = 0;
+
+out:
+       if (clnt) {
+               if (clnt->cl_auth) {
+                       auth_destroy(clnt->cl_auth);
+               }
+               clnt_destroy(clnt);
+       }
+
+       SAFE_FREE(cutstr);
+
+       DEBUG(10, ("sys_get_nfs_quotas: finished\n" ));
+       return ret;
+}
+
+int sys_set_nfs_quota(const char *path, const char *bdev,
+                     enum SMB_QUOTA_TYPE qtype,
+                     unid_t id, SMB_DISK_QUOTA *dp)
+{
+       DEBUG(1, ("sys_set_nfs_quota : not supported\n"));
+       errno = ENOSYS;
+       return -1;
+}
+
+#else /* HAVE_NFS_QUOTAS */
+
+void dummy_sysquotas_nfs(void);
+void dummy_sysquotas_nfs(void) {}
+
+#endif /* HAVE_NFS_QUOTAS */