From 76e7e636c391dcb9c0e149a4ef61d5ba13aa542f Mon Sep 17 00:00:00 2001
From: Francesco Chemolli <5175948+kinkie@users.noreply.github.com>
Date: Thu, 22 Feb 2024 09:24:10 +0000
Subject: [PATCH] Maintenance: Remove Red Hat Linux workarounds predating RHEL
 (#1698)

The last Red Hat Linux release went EOL in 2004, replaced by Red Hat
Enterprise Linux and Fedora Linux. We no longer support Red Hat Linux
releases and expect that these hacks are no longer necessary in
supported environments.
---
 acinclude/os-deps.m4 | 25 -------------------------
 configure.ac         | 12 +-----------
 2 files changed, 1 insertion(+), 36 deletions(-)

diff --git a/acinclude/os-deps.m4 b/acinclude/os-deps.m4
index 390def0022..85da54aeab 100644
--- a/acinclude/os-deps.m4
+++ b/acinclude/os-deps.m4
@@ -732,31 +732,6 @@ void squid_getprotobynumber(void) {
   SQUID_STATE_ROLLBACK(winsock)
 ])
 
-dnl check that setresuid is properly implemented.
-dnl sets squid_cv_resuid_works to "yes" or "no"
-AC_DEFUN([SQUID_CHECK_SETRESUID_WORKS],[
-  AC_CACHE_CHECK(if setresuid is actually implemented, squid_cv_resuid_works,
-    AC_RUN_IFELSE([AC_LANG_SOURCE([[
-#if HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#if HAVE_STDIO_H
-#include <stdio.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-  int main(int argc, char **argv) {
-    if(setresuid(-1,-1,-1)) {
-      perror("setresuid:");
-      return 1;
-    }
-    return 0;
-  }
-    ]])],[squid_cv_resuid_works="yes"],[squid_cv_resuid_works="no"],[:])
-  )
-])
-
 dnl check whether Solaris has broken IPFilter headers (Solaris 10 at least does)
 AC_DEFUN([SQUID_CHECK_BROKEN_SOLARIS_IPFILTER],[
   AS_IF([test "x$squid_cv_broken_ipfilter_minor_t" = "x"],[
diff --git a/configure.ac b/configure.ac
index de6bc5e5ac..0028b9b0bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1158,12 +1158,6 @@ AS_IF([test "x$with_openssl" = "xyes"],[
     ],$LIBOPENSSL_LIBS)
   ])
 
-  # This is a workaround for RedHat 9 brain damage..
-  AS_IF([test -d /usr/kerberos/include -a -f /usr/include/openssl/kssl.h],[
-    AC_MSG_NOTICE([OpenSSL depends on Kerberos])
-    LIBOPENSSL_LIBS="-L/usr/kerberos/lib $LIBOPENSSL_LIBS"
-    CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
-  ])
   SQUID_STATE_ROLLBACK(squid_openssl_state) #de-pollute LIBS
 
   AS_IF([test "x$LIBOPENSSL_LIBS" != "x"],[
@@ -2628,6 +2622,7 @@ AC_CHECK_FUNCS(\
 	setpflags \
 	setpgrp \
 	setsid \
+	setresuid \
 	sigaction \
 	snprintf \
 	socketpair \
@@ -2688,11 +2683,6 @@ AS_IF([test "x$ac_cv_func_sched_getaffinity" = "xyes" -a "x$ac_cv_func_sched_set
   AC_DEFINE(HAVE_CPU_AFFINITY,1,[Support setting CPU affinity for workers])
 ])
 
-SQUID_CHECK_SETRESUID_WORKS
-AS_IF([test "x$squid_cv_resuid_works" = "xyes"],[
-  AC_DEFINE(HAVE_SETRESUID,1,[Yay! Another Linux brokenness. Knowing that setresuid() exists is not enough, because RedHat 5.0 declares setresuid() but does not implement it.])
-])
-
 AC_CHECK_HEADERS(mswsock.h)
 AC_MSG_CHECKING([for constant CMSG_SPACE])
 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-- 
2.47.2