From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 9 Feb 2020 22:44:08 +0000 (+0000)
Subject: htl: Add support for semaphore maximum value
X-Git-Tag: glibc-2.32~701
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e77ec7c6e64d67f048caa5d4dd81f10fca3dffc;p=thirdparty%2Fglibc.git

htl: Add support for semaphore maximum value
---

diff --git a/sysdeps/htl/sem-post.c b/sysdeps/htl/sem-post.c
index 77f297314e1..2e0be8fc495 100644
--- a/sysdeps/htl/sem-post.c
+++ b/sysdeps/htl/sem-post.c
@@ -30,6 +30,13 @@ __sem_post (sem_t *sem)
   if (sem->__value > 0)
     /* Do a quick up.  */
     {
+      if (sem->__value == SEM_VALUE_MAX)
+	{
+	  __pthread_spin_unlock (&sem->__lock);
+	  errno = EOVERFLOW;
+	  return -1;
+	}
+
       assert (sem->__queue == NULL);
       sem->__value++;
       __pthread_spin_unlock (&sem->__lock);
diff --git a/sysdeps/mach/hurd/bits/local_lim.h b/sysdeps/mach/hurd/bits/local_lim.h
index 348eee74bb0..8e781e4965f 100644
--- a/sysdeps/mach/hurd/bits/local_lim.h
+++ b/sysdeps/mach/hurd/bits/local_lim.h
@@ -41,3 +41,6 @@
 
 /* The number of threads per process.  */
 #define _POSIX_THREAD_THREADS_MAX	64
+
+/* Maximum value the semaphore can have.  */
+#define SEM_VALUE_MAX   (2147483647)