diff -urNp quota-tools-orig/quotaio.c quota-tools/quotaio.c
--- quota-tools-orig/quotaio.c	2005-03-18 12:23:12.000000000 +0100
+++ quota-tools/quotaio.c	2008-07-17 22:16:08.000000000 +0200
@@ -54,6 +54,7 @@ struct quota_handle *init_io(struct mnte
 	h->qh_type = type;
 	sstrncpy(h->qh_quotadev, mnt_fsname, sizeof(h->qh_quotadev));
 	free((char *)mnt_fsname);
+  sstrncpy(h->qh_fstype, mnt->mnt_type, MAX_FSTYPE_LEN);
 	if (nfs_fstype(mnt->mnt_type)) {	/* NFS filesystem? */
 		if (fmt != -1 && fmt != QF_RPC) {	/* User wanted some other format? */
 			errstr(_("Only RPC quota format is allowed on NFS filesystem.\n"));
diff -urNp quota-tools-orig/quotaio.h quota-tools/quotaio.h
--- quota-tools-orig/quotaio.h	2002-11-21 19:36:04.000000000 +0100
+++ quota-tools/quotaio.h	2008-07-17 22:21:45.000000000 +0200
@@ -40,6 +40,8 @@
 	"xfs"\
 }
 
+#define MAX_FSTYPE_LEN 16  /* Maximum length of filesystem type name */
+
 /* Values for format handling */
 #define QF_UNKNOWN -3		/* Format cannot be detected from filename */
 #define QF_TOONEW -2		/* Quota format is too new to handle */
@@ -82,6 +84,7 @@ struct quota_handle {
 	int qh_fd;		/* Handle of file (-1 when IOFL_QUOTAON) */
 	int qh_io_flags;	/* IO flags for file */
 	char qh_quotadev[PATH_MAX];	/* Device file is for */
+	char qh_fstype[MAX_FSTYPE_LEN]; /* Type of the filesystem on qh_quotadev */
 	int qh_type;		/* Type of quotafile */
 	int qh_fmt;		/* Quotafile format */
 	struct stat qh_stat;	/* stat(2) for qh_quotadev */
diff -urNp quota-tools-orig/rquota_client.c quota-tools/rquota_client.c
--- quota-tools-orig/rquota_client.c	2005-06-01 09:21:30.000000000 +0200
+++ quota-tools/rquota_client.c	2008-07-17 22:20:15.000000000 +0200
@@ -155,6 +155,12 @@ int rpc_rquota_get(struct dquot *dquot)
 	}
 
 	*pathname++ = '\0';
+	/* For NFSv4, we send the filesystem path without initial /. Server prepends proper
+	 * NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */
+	if (!strcmp(dquot->dq_h->qh_fstype, MNTTYPE_NFS4)) {
+		while (*pathname == '/')
+			pathname++;
+	}
 
 	/*
 	 * First try EXT_RQUOTAPROG (Extended (LINUX) RPC quota program)
@@ -265,6 +271,13 @@ int rpc_rquota_set(int qcmd, struct dquo
 		return -ENOENT;
 
 	*pathname++ = '\0';
+	/* For NFSv4, we send the filesystem path without initial /. Server prepends proper
+	 * NFS pseudoroot automatically and uses this for detection of NFSv4 mounts. */
+	if (!strcmp(dquot->dq_h->qh_fstype, MNTTYPE_NFS4)) {
+		while (*pathname == '/')
+			pathname++;
+	}
+
 
 	/*
 	 * First try EXT_RQUOTAPROG (Extended (LINUX) RPC quota program)
diff -urNp quota-tools-orig/rquota_server.c quota-tools/rquota_server.c
--- quota-tools-orig/rquota_server.c	2005-06-01 09:21:30.000000000 +0200
+++ quota-tools/rquota_server.c	2008-07-17 22:26:39.000000000 +0200
@@ -123,12 +123,11 @@ setquota_rslt *setquotainfo(int lflags, 
 	struct util_dqblk dqblk;
 	struct dquot *dquot;
 	struct mntent *mnt;
-	char pathname[PATH_MAX];
+	char pathname[PATH_MAX] = {0};
 	char *pathp = pathname;
 	int id, qcmd, type;
 	struct quota_handle *handles[2] = { NULL, NULL };
 
-	sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 	/*
 	 * First check authentication.
 	 */
@@ -143,6 +142,8 @@ setquota_rslt *setquotainfo(int lflags, 
 
 		qcmd = arguments.ext_args->sqa_qcmd;
 		type = arguments.ext_args->sqa_type;
+		if (arguments.ext_args->sqa_pathp[0] != '/')
+			sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 		sstrncat(pathname, arguments.ext_args->sqa_pathp, PATH_MAX);
 		servnet2utildqblk(&dqblk, &arguments.ext_args->sqa_dqblk);
 	}
@@ -157,6 +158,8 @@ setquota_rslt *setquotainfo(int lflags, 
 
 		qcmd = arguments.args->sqa_qcmd;
 		type = USRQUOTA;
+		if (arguments.args->sqa_pathp[0] != '/')
+			sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 		sstrncat(pathname, arguments.args->sqa_pathp, PATH_MAX);
 		servnet2utildqblk(&dqblk, &arguments.args->sqa_dqblk);
 	}
@@ -212,18 +215,19 @@ getquota_rslt *getquotainfo(int lflags, 
 	} arguments;
 	struct dquot *dquot = NULL;
 	struct mntent *mnt;
-	char pathname[PATH_MAX];
+	char pathname[PATH_MAX] = {0};
 	char *pathp = pathname;
 	int id, type;
 	struct quota_handle *handles[2] = { NULL, NULL };
 
-	sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 	/*
 	 * First check authentication.
 	 */
 	if (lflags & TYPE_EXTENDED) {
 		arguments.ext_args = (ext_getquota_args *) argp;
 		id = arguments.ext_args->gqa_id;
+		if (arguments.ext_args->gqa_pathp[0] != '/')
+			sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 		type = arguments.ext_args->gqa_type;
 		sstrncat(pathname, arguments.ext_args->gqa_pathp, PATH_MAX);
 
@@ -241,6 +245,8 @@ getquota_rslt *getquotainfo(int lflags, 
 	else {
 		arguments.args = (getquota_args *) argp;
 		id = arguments.args->gqa_uid;
+		if (arguments.args->gqa_pathp[0] != '/')
+			sstrncpy(pathname, nfs_pseudoroot, PATH_MAX);
 		type = USRQUOTA;
 		sstrncat(pathname, arguments.args->gqa_pathp, PATH_MAX);