!11 fix:which fails for long path

From: @fandeyuan 
Reviewed-by: @overweight 
Signed-off-by: @overweight

0001-which-fails-for-long-path.patch

@@ -0,0 +1,59 @@
+From 77420bf2e35444f348b19e0acaf1f77bb4ed3f76 Mon Sep 17 00:00:00 2001
+From: fandeyuan <fandeyuan@kylinos.cn>
+Date: Tue, 30 Apr 2024 14:18:20 +0800
+Subject: [PATCH] which fails for long path
+
+---
+ which.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/which.c b/which.c
+index 1606052..525c0d0 100644
+--- a/which.c
++++ b/which.c
+@@ -19,10 +19,15 @@
+ #include "sys.h"
+ #include <stdio.h>
+ #include <ctype.h>
++#include <limits.h>
+ #include "getopt.h"
+ #include "tilde/tilde.h"
+ #include "bash.h"
+ 
++#ifndef PATH_MAX
++#define PATH_MAX 4096
++#endif
++
+ static const char *progname;
+ 
+ static void print_usage(FILE *out)
+@@ -63,7 +68,7 @@ static void print_fail(const char *name, const char *path_list)
+   fprintf(stderr, "%s: no %s in (%s)\n", progname, name, path_list);
+ }
+ 
+-static char home[256];
++static char home[PATH_MAX];
+ static size_t homelen = 0;
+ 
+ static int absolute_path_given;
+@@ -162,7 +167,7 @@ static char *find_command_in_path(const char *name, const char *path_list, int *
+   return (found);
+ }
+ 
+-static char cwd[256];
++static char cwd[PATH_MAX];
+ static size_t cwdlen;
+ 
+ static void get_current_working_directory(void)
+@@ -194,7 +199,7 @@ static void get_current_working_directory(void)
+ 
+ static char *path_clean_up(const char *path)
+ {
+-  static char result[256];
++  static char result[PATH_MAX];
+ 
+   const char *p1 = path;
+   char *p2 = result;
+-- 
+2.33.0
+

which.spec

@@ -1,11 +1,13 @@
 Name:		which
 Version:	2.21
-Release:	15
+Release:	16
 Summary:	Show the full path of commands
 License:	GPLv3
 URL:		https://savannah.gnu.org/projects/which/
 Source0:	http://ftp.gnu.org/gnu/which/%{name}-%{version}.tar.gz
 
+Patch1:  0001-which-fails-for-long-path.patch
+
 BuildRequires:	gcc
 
 %description
@@ -40,6 +42,12 @@ rm -f %{buildroot}/%{_datadir}/info/dir
 %{_datadir}/info/%{name}.info.gz
 
 %changelog
+* Tue Apr 30 2024 Deyuan Fan <fandeyuan@kylinos.cn> - 2.21-16
+- Type: bugfix
+- ID: NA
+- SUG: NA
+- DESC: fix:which fails for long path
+
 * Mon Jun 20 2022 yangzhao <yangzhao1@kylinos.cn> - 2.21-15
 - Type: enhancement
 - ID: NA