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authorMichael Adam <obnox@samba.org>2010-08-06 11:58:46 +0200
committerMichael Adam <obnox@samba.org>2010-08-25 14:05:51 +0200
commitbe598569bbb9dec5cb8035441ef7411ebed29991 (patch)
treeb8f4e8cc6b62e36db9b2711bf45085ffc81c37ca /source3/smbd
parent3add3aa17de7954b01e2c9273295195438ac30e5 (diff)
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s3:smbd: add nfs quota support to the linux-non-sysquota code
This is based on the implementation for solaris and FreeBSD. It makes rpc calls out to the nfs server to retrieve quota information.
Diffstat (limited to 'source3/smbd')
-rw-r--r--source3/smbd/quotas.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/source3/smbd/quotas.c b/source3/smbd/quotas.c
index 1ad2b937b1..ad3973f754 100644
--- a/source3/smbd/quotas.c
+++ b/source3/smbd/quotas.c
@@ -73,6 +73,197 @@ typedef struct _LINUX_SMB_DISK_QUOTA {
} LINUX_SMB_DISK_QUOTA;
+/*
+ * nfs quota support
+ * (essentially taken from FreeBSD / SUNOS5 section)
+ */
+#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;
+}
+
+static bool nfs_quotas(char *nfspath, uid_t euser_id, uint64_t *bsize,
+ uint64_t *dfree, uint64_t *dsize)
+{
+ uid_t uid = euser_id;
+ LINUX_SMB_DISK_QUOTA D;
+ char *mnttype = nfspath;
+ CLIENT *clnt;
+ struct getquota_rslt gqr;
+ struct getquota_args args;
+ char *cutstr, *pathname, *host, *testpath;
+ int len;
+ static struct timeval timeout = {2,0};
+ enum clnt_stat clnt_stat;
+ bool ret = True;
+
+ *bsize = *dfree = *dsize = (uint64_t)0;
+
+ len=strcspn(mnttype, ":");
+ pathname=strstr(mnttype, ":");
+ cutstr = (char *) SMB_MALLOC(len+1);
+ if (!cutstr)
+ return False;
+
+ memset(cutstr, '\0', len+1);
+ host = strncat(cutstr,mnttype, sizeof(char) * len );
+ DEBUG(5,("nfs_quotas: looking for mount on \"%s\"\n", cutstr));
+ DEBUG(5,("nfs_quotas: of path \"%s\"\n", mnttype));
+ testpath=strchr_m(mnttype, ':');
+ args.gqa_pathp = testpath+1;
+ args.gqa_uid = uid;
+
+ DEBUG(5, ("nfs_quotas: Asking for host \"%s\" rpcprog \"%i\" rpcvers "
+ "\"%i\" network \"%s\"\n", host, RQUOTAPROG, RQUOTAVERS,
+ "udp"));
+
+ if ((clnt = clnt_create(host, RQUOTAPROG, RQUOTAVERS, "udp")) == NULL) {
+ ret = False;
+ goto out;
+ }
+
+ clnt->cl_auth = authunix_create_default();
+ DEBUG(9,("nfs_quotas: auth_success\n"));
+
+ clnt_stat=clnt_call(clnt,
+ RQUOTAPROC_GETQUOTA,
+ (const xdrproc_t)my_xdr_getquota_args,
+ (caddr_t)&args,
+ (const xdrproc_t)my_xdr_getquota_rslt,
+ (caddr_t)&gqr, timeout);
+
+ if (clnt_stat != RPC_SUCCESS) {
+ DEBUG(9,("nfs_quotas: clnt_call fail\n"));
+ ret = False;
+ goto out;
+ }
+
+ /*
+ * 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. If 0 or 3 return
+ * something sensible.
+ */
+
+ switch (gqr.status) {
+ case 0:
+ DEBUG(9, ("nfs_quotas: Remote Quotas Failed! Error \"%i\" \n",
+ gqr.status));
+ ret = False;
+ goto out;
+
+ case 1:
+ DEBUG(9,("nfs_quotas: Good quota data\n"));
+ D.softlimit = gqr.getquota_rslt_u.gqr_rquota.rq_bsoftlimit;
+ D.hardlimit = gqr.getquota_rslt_u.gqr_rquota.rq_bhardlimit;
+ D.curblocks = gqr.getquota_rslt_u.gqr_rquota.rq_curblocks;
+ break;
+
+ case 2:
+ case 3:
+ D.softlimit = 1;
+ D.curblocks = 1;
+ DEBUG(9, ("nfs_quotas: Remote Quotas returned \"%i\" \n",
+ gqr.status));
+ break;
+
+ default:
+ DEBUG(9, ("nfs_quotas: Remote Quotas Questionable! "
+ "Error \"%i\" \n", gqr.status));
+ break;
+ }
+
+ DEBUG(10, ("nfs_quotas: Let`s look at D a bit closer... "
+ "status \"%i\" bsize \"%i\" active? \"%i\" bhard "
+ "\"%i\" bsoft \"%i\" curb \"%i\" \n",
+ gqr.status,
+ gqr.getquota_rslt_u.gqr_rquota.rq_bsize,
+ gqr.getquota_rslt_u.gqr_rquota.rq_active,
+ gqr.getquota_rslt_u.gqr_rquota.rq_bhardlimit,
+ gqr.getquota_rslt_u.gqr_rquota.rq_bsoftlimit,
+ gqr.getquota_rslt_u.gqr_rquota.rq_curblocks));
+
+ if (D.softlimit == 0)
+ D.softlimit = D.hardlimit;
+ if (D.softlimit == 0)
+ return False;
+
+ *bsize = gqr.getquota_rslt_u.gqr_rquota.rq_bsize;
+ *dsize = D.softlimit;
+
+ if (D.curblocks == 1)
+ *bsize = DEV_BSIZE;
+
+ if (D.curblocks > D.softlimit) {
+ *dfree = 0;
+ *dsize = D.curblocks;
+ } else
+ *dfree = D.softlimit - D.curblocks;
+
+ out:
+
+ if (clnt) {
+ if (clnt->cl_auth)
+ auth_destroy(clnt->cl_auth);
+ clnt_destroy(clnt);
+ }
+
+ DEBUG(5, ("nfs_quotas: For path \"%s\" returning "
+ "bsize %.0f, dfree %.0f, dsize %.0f\n",
+ args.gqa_pathp, (double)*bsize, (double)*dfree,
+ (double)*dsize));
+
+ SAFE_FREE(cutstr);
+ DEBUG(10,("nfs_quotas: End of nfs_quotas\n" ));
+ return ret;
+}
+
+/* end of nfs quota section */
+
#ifdef HAVE_LINUX_DQBLK_XFS_H
#include <linux/dqblk_xfs.h>
@@ -251,6 +442,13 @@ bool disk_quotas(const char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *d
become_root();
+ if (strcmp(mnt->mnt_type, "nfs") == 0) {
+ bool retval;
+ retval = nfs_quotas(mnt->mnt_fsname , euser_id, bsize, dfree, dsize);
+ unbecome_root();
+ return retval;
+ }
+
if (strcmp(mnt->mnt_type, "xfs")==0) {
r=get_smb_linux_xfs_quota(mnt->mnt_fsname, euser_id, egrp_id, &D);
} else {