修复sss_cli_check_socket函数存在的pid回绕问题

修复问题：https://gitee.com/src-openeuler/sssd/issues/I6HZQ8?from=project-issue

Fix-pid-wrapping-in-sss_cli_check_socket.patch

@@ -0,0 +1,38 @@
+diff -Naur sssd-2.8.2/src/sss_client/common.c sssd-2.8.2-b/src/sss_client/common.c
+--- sssd-2.8.2/src/sss_client/common.c	2023-03-09 14:58:11.000000000 +0800
++++ sssd-2.8.2-b/src/sss_client/common.c	2023-03-09 15:02:20.000000000 +0800
+@@ -664,21 +664,28 @@
+                                             int timeout)
+ {
+     static pid_t mypid;
+-    struct stat mysb;
++    static struct stat selfsb;
++    struct stat mypid_sb, myself_sb;
+     int mysd;
+     int ret;
+ 
+-    if (getpid() != mypid) {
+-        ret = fstat(sss_cli_sd, &mysb);
++    ret = lstat("/proc/self/", &myself_sb);
++
++    if (getpid() != mypid || (ret == 0 && myself_sb.st_ino != selfsb.st_ino)) {
++        ret = fstat(sss_cli_sd, &mypid_sb);
+         if (ret == 0) {
+-            if (S_ISSOCK(mysb.st_mode) &&
+-                mysb.st_dev == sss_cli_sb.st_dev &&
+-                mysb.st_ino == sss_cli_sb.st_ino) {
++            if (S_ISSOCK(mypid_sb.st_mode) &&
++                mypid_sb.st_dev == sss_cli_sb.st_dev &&
++                mypid_sb.st_ino == sss_cli_sb.st_ino) {
+                 sss_cli_close_socket();
+             }
+         }
+         sss_cli_sd = -1;
+         mypid = getpid();
++        ret = lstat("/proc/self/", &selfsb);
++        if (ret) {
++            memset(&selfsb, 0, sizeof(selfsb));
++        }
+     }
+ 
+     /* check if the socket has been closed on the other side */

sssd.spec

@@ -7,6 +7,7 @@ URL: https://pagure.io/SSSD/sssd/
 Source0: https://github.com/SSSD/sssd/releases/download/%{version}/%{name}-%{version}.tar.gz
 
 Patch6000: MONITOR-fix-socket_activated-flag-initialization.patch
+Patch6001: Fix-pid-wrapping-in-sss_cli_check_socket.patch
 
 Requires: python3-sssd = %{version}-%{release}
 Requires: libldb