nfs-utils: backport patches from community

(cherry picked from commit 0d2a96711001d29db81757da4192cc7e896dd8a7)

0012-rpcdebug-avoid-buffer-underflow-if-read-returns-0.patch

@@ -0,0 +1,29 @@
+From a746c35822e557766d1871ec976490a71e6962d9 Mon Sep 17 00:00:00 2001
+From: Zhi Li <yieli@redhat.com>
+Date: Wed, 5 Apr 2023 12:08:10 -0400
+Subject: [PATCH] rpcdebug: avoid buffer underflow if read() returns 0
+
+Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2176740
+
+Signed-off-by: Zhi Li <yieli@redhat.com>
+Signed-off-by: Steve Dickson <steved@redhat.com>
+---
+ tools/rpcdebug/rpcdebug.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/rpcdebug/rpcdebug.c b/tools/rpcdebug/rpcdebug.c
+index 68206cc5..ec05179e 100644
+--- a/tools/rpcdebug/rpcdebug.c
++++ b/tools/rpcdebug/rpcdebug.c
+@@ -257,7 +257,7 @@ get_flags(char *module)
+ 		perror(filename);
+ 		exit(1);
+ 	}
+-	if ((len = read(sysfd, buffer, sizeof(buffer))) < 0) {
++	if ((len = read(sysfd, buffer, sizeof(buffer))) <= 0) {
+ 		perror("read");
+ 		exit(1);
+ 	}
+-- 
+2.33.0
+

0013-export-Fix-rootdir-corner-case-in-next_mnt.patch

@@ -0,0 +1,58 @@
+From c0bf5895173972a0b86633c7d61d0de46798bbe1 Mon Sep 17 00:00:00 2001
+From: Richard Weinberger <richard@nod.at>
+Date: Wed, 5 Apr 2023 12:16:24 -0400
+Subject: [PATCH] export: Fix rootdir corner case in next_mnt()
+
+Currently the following setup causes failure:
+1. /etc/exports:
+/ *(rw,crossmnt,no_subtree_check,fsid=root)
+
+2. /etc/nfs.conf:
+[exports]
+ rootdir=/nfs_srv
+
+3. Mounts:
+/root/fs1.ext4 on /nfs_srv type ext4 (rw,relatime)
+/root/fs2.ext4 on /nfs_srv/fs2 type ext4 (rw,relatime)
+
+4. On the client:
+$ ls /nfs_client/fs2
+ls: cannot open directory '/nfs_client/fs2': Stale file handle
+
+The problem is that next_mnt() misses the corner case that
+every mount is a sub-mount of "/".
+So it fails to see that /nfs_srv/fs2 is a mountpoint when the
+client asks for fs2 it and as consequence the crossmnt mechanism
+fails.
+
+Signed-off-by: Richard Weinberger <richard@nod.at>
+Signed-off-by: Steve Dickson <steved@redhat.com>
+---
+ support/export/cache.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/support/export/cache.c b/support/export/cache.c
+index 2497d4f4..1c526277 100644
+--- a/support/export/cache.c
++++ b/support/export/cache.c
+@@ -410,12 +410,16 @@ static char *next_mnt(void **v, char *p)
+ 		*v = f;
+ 	} else
+ 		f = *v;
+-	while ((me = getmntent(f)) != NULL && l > 1) {
++	while ((me = getmntent(f)) != NULL && l >= 1) {
+ 		char *mnt_dir = nfsd_path_strip_root(me->mnt_dir);
+ 
+ 		if (!mnt_dir)
+ 			continue;
+ 
++		/* Everything below "/" is a proper sub-mount */
++		if (strcmp(p, "/") == 0)
++			return mnt_dir;
++
+ 		if (strncmp(mnt_dir, p, l) == 0 && mnt_dir[l] == '/')
+ 			return mnt_dir;
+ 	}
+-- 
+2.33.0
+

nfs-utils.spec

@@ -4,7 +4,7 @@
 
 Name:    nfs-utils
 Version: 2.5.4
-Release: 11
+Release: 12
 Epoch:   2
 Summary: The Linux NFS userland utility package
 License: MIT and GPLv2 and GPLv2+ and BSD
@@ -24,6 +24,8 @@ Patch8:  0008-svcgssd-Fix-use-after-free-bug-config-variables.patch
 Patch9:  0009-rpc-pipefs-generator-allocate-enough-space-for-pipef.patch
 Patch10: 0010-nfs-utils-Don-t-allow-junction-tests-to-trigger-auto.patch
 Patch11: 0011-Covscan-Scan-Wrong-Check-of-Return-Value.patch
+Patch12: 0012-rpcdebug-avoid-buffer-underflow-if-read-returns-0.patch
+Patch13: 0013-export-Fix-rootdir-corner-case-in-next_mnt.patch
 
 BuildRequires: libevent-devel,libcap-devel, libtirpc-devel libblkid-devel
 BuildRequires: krb5-libs >= 1.4 autoconf >= 2.57 openldap-devel >= 2.2
@@ -292,6 +294,9 @@ fi
 %{_mandir}/*/*
 
 %changelog
+* Sun Jun 25 2023 wuguanghao <wuguanghao3@huawei.com> - 2:2.5.4-12
+- backport patches from community
+
 * Thu Mar 23 2023 wuguanghao <wuguanghao3@huawei.com> - 2:2.5.4-11
 - backport patches from community