From 2b115069c14026baccfea3886c3b34d73c200a22 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Mon, 14 Jul 2025 16:03:12 +0300
Subject: [PATCH] =?UTF-8?q?mdbx:=20=D0=B8=D1=81=D0=BF=D1=80=D0=B0=D0=B2?=
 =?UTF-8?q?=D0=BB=D0=B5=D0=BD=D0=B8=D0=B5=20resurrect-after-fork=20=D0=BF?=
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Ошибка/недоработка была с первой реализации resurrect-after-fork в
ноябре 2023, но оставалась не замеченной из-за отсутствия
CI-тестирования на платформе OSX/Mac (где нет поддержки разделяемых
мьютексов).
---
 src/lck-posix.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/lck-posix.c b/src/lck-posix.c
index 8586315b..584df277 100644
--- a/src/lck-posix.c
+++ b/src/lck-posix.c
@@ -457,6 +457,10 @@ __cold MDBX_INTERNAL int lck_destroy(MDBX_env *env, MDBX_env *inprocess_neighbor
     jitter4testing(false);
   }
 
+#if MDBX_LOCKING == MDBX_LOCKING_SYSV
+  env->me_sysv_ipc.semid = -1;
+#endif /* MDBX_LOCKING */
+
   if (current_pid != env->pid) {
     eASSERT(env, !inprocess_neighbor);
     NOTICE("drown env %p after-fork pid %d -> %d", __Wpedantic_format_voidptr(env), env->pid, current_pid);
@@ -773,14 +777,14 @@ static int osal_ipclock_lock(MDBX_env *env, osal_ipclock_t *ipc, const bool dont
   return rc;
 }
 
-int osal_ipclock_unlock(MDBX_env *env, osal_ipclock_t *ipc) {
+static int osal_ipclock_unlock(MDBX_env *env, osal_ipclock_t *ipc) {
   int err = MDBX_ENOSYS;
 #if MDBX_LOCKING == MDBX_LOCKING_POSIX2001 || MDBX_LOCKING == MDBX_LOCKING_POSIX2008
   err = pthread_mutex_unlock(ipc);
 #elif MDBX_LOCKING == MDBX_LOCKING_POSIX1988
   err = sem_post(ipc) ? errno : MDBX_SUCCESS;
 #elif MDBX_LOCKING == MDBX_LOCKING_SYSV
-  if (unlikely(*ipc != (pid_t)env->pid))
+  if (unlikely(*ipc != (pid_t)env->pid || env->me_sysv_ipc.key == -1))
     err = EPERM;
   else {
     *ipc = 0;