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fix pid wrapping in sss_cli_check_socket

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resolves：https://gitee.com/src-openeuler/sssd/issues/I6HZQ8?from=project-issue
This commit is contained in:
answer9030 2023-03-09 15:06:37 +08:00
parent 4648375407
commit 839d43ec2a
2 changed files with 17 additions and 13 deletions
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25
Fix-pid-wrapping-in-sss_cli_check_socket.patch
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@ -1,21 +1,24 @@
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 @@
--- sssd-2.8.2/src/sss_client/common.c 2023-03-28 11:25:28.000000000 +0800
+++ sssd-2.8.2-b/src/sss_client/common.c 2023-03-28 11:26:09.000000000 +0800
@@ -663,22 +663,27 @@
const char *socket_name,
int timeout)
{
static pid_t mypid;
- static pid_t mypid;
- struct stat mysb;
+ static struct stat selfsb;
+ static pid_t mypid_s;
+ static ino_t myself_ino;
+ struct stat mypid_sb, myself_sb;
+ pid_t mypid_d;
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)) {
+ mypid_d = getpid();
+ if (mypid_d != mypid_s || (ret == 0 && myself_sb.st_ino != myself_ino)) {
+ ret = fstat(sss_cli_sd, &mypid_sb);
if (ret == 0) {
- if (S_ISSOCK(mysb.st_mode) &&
@ -28,11 +31,9 @@ diff -Naur sssd-2.8.2/src/sss_client/common.c sssd-2.8.2-b/src/sss_client/common
}
}
sss_cli_sd = -1;
mypid = getpid();
+ ret = lstat("/proc/self/", &selfsb);
+ if (ret) {
+ memset(&selfsb, 0, sizeof(selfsb));
+ }
- mypid = getpid();
+ mypid_s = mypid_d;
+ myself_ino = myself_sb.st_ino;
}
/* check if the socket has been closed on the other side */

5
sssd.spec
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@ -1,6 +1,6 @@
Name: sssd
Version: 2.8.2
Release: 4
Release: 5
Summary: System Security Services Daemon
License: GPLv3+ and LGPLv3+
URL: https://pagure.io/SSSD/sssd/
@ -535,6 +535,9 @@ fi
%systemd_postun_with_restart sssd.service
%changelog
* Tue Mar 28 2023 jiangjixiang <jiangjixiang@kylinos.cn> - 2.8.2-5
- fix pid wrapping in sss_cli_check_socket
* Wed Mar 08 2023 zhouchenchen123 <zhouchenchen@huawei.com> - 2.8.2-4
- fix coredump in sssd.service