From 56290ee01731ae296f04da8b00da9fc47fe152dc Mon Sep 17 00:00:00 2001
From: Than Ngo <than@redhat.com>
Date: Thu, 3 Jul 2025 14:30:34 +0200
Subject: [PATCH] - Add a check to ensure that /proc/$$/exe can be read  
 thanks to mbliss@redhat.com for the report and the proposed patch   Resolves:
 RHEL-101073

---
 which.spec | 8 +++++++-
 which2.sh  | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/which.spec b/which.spec
index ab99c50..dc662f2 100644
--- a/which.spec
+++ b/which.spec
@@ -1,7 +1,7 @@
 Summary: Displays where a particular program in your path is located
 Name: which
 Version: 2.21
-Release: 29%{?dist}
+Release: 30%{?dist}
 License: GPLv3
 Source0: http://ftp.gnu.org/gnu/which/%{name}-%{version}.tar.gz
 Source1: which2.sh
@@ -43,6 +43,12 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %{_mandir}/man1/which.1*
 
 %changelog
+* Thu Jul 03 2025 Than Ngo <than@redhat.com> - 2.21-30
+- Add a check to ensure that /proc/$$/exe can be read
+  thanks to mbliss@redhat.com for the report and the proposed patch
+  Resolves: RHEL-101073
+
+
 * Mon Mar 27 2023 Than Ngo <than@redhat.com> - 2.21-29
 - Resolves: #2181974, which fails for long path
 
diff --git a/which2.sh b/which2.sh
index bca5347..41bce32 100644
--- a/which2.sh
+++ b/which2.sh
@@ -1,7 +1,13 @@
 # shellcheck shell=sh
 # Initialization script for bash, sh, mksh and ksh
 
-case "$(basename $(readlink /proc/$$/exe))" in
+if [ -r /proc/$$/exe ]; then
+    SHELLNAME=$(basename $(readlink /proc/$$/exe))
+else
+    SHELLNAME="unknown"
+fi
+
+case "$SHELLNAME" in
 *ksh*)
     which_declare=""
     which_opt=""