[glibc] hurd: Don't attempt to deallocate MACH_PORT_DEAD

[glibc] hurd: Don't attempt to deallocate MACH_PORT_DEAD

[Samuel Thibault]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=35b7bf2fe003d6dbd5726cdf69f3c5d8179590e5

commit 35b7bf2fe003d6dbd5726cdf69f3c5d8179590e5
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Mon Apr 24 00:55:24 2023 +0300

    hurd: Don't attempt to deallocate MACH_PORT_DEAD
    
    ...in some more places.
    
    Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
    Message-Id: <20230423215526.346009-2-bugaevc@gmail.com>

Diff:
---
 sysdeps/mach/hurd/dl-sysdep.c | 2 +-
 sysdeps/mach/hurd/mmap.c      | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index d7b309e05d..25a1277461 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -472,7 +472,7 @@ __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset)
       err = __io_map ((mach_port_t) fd, &memobj_rd, &memobj_wr);
       if (err)
 	return __hurd_fail (err), MAP_FAILED;
-      if (memobj_wr != MACH_PORT_NULL)
+      if (MACH_PORT_VALID (memobj_wr))
 	__mach_port_deallocate (__mach_task_self (), memobj_wr);
     }
 
diff --git a/sysdeps/mach/hurd/mmap.c b/sysdeps/mach/hurd/mmap.c
index c3cc18560c..790eb23886 100644
--- a/sysdeps/mach/hurd/mmap.c
+++ b/sysdeps/mach/hurd/mmap.c
@@ -91,7 +91,7 @@ __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset)
             if (wobj == robj)
               max_vmprot |= VM_PROT_WRITE;
 	    memobj = robj;
-	    if (wobj != MACH_PORT_NULL)
+	    if (MACH_PORT_VALID (wobj))
 	      __mach_port_deallocate (__mach_task_self (), wobj);
 	    break;
 	  case PROT_WRITE:
@@ -99,7 +99,7 @@ __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset)
             if (robj == wobj)
               max_vmprot |= VM_PROT_READ|VM_PROT_EXECUTE;
 	    memobj = wobj;
-	    if (robj != MACH_PORT_NULL)
+	    if (MACH_PORT_VALID (robj))
 	      __mach_port_deallocate (__mach_task_self (), robj);
 	    break;
 	  case PROT_READ|PROT_WRITE:
@@ -167,7 +167,7 @@ __mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset)
 			copy ? VM_INHERIT_COPY : VM_INHERIT_SHARE);
     }
 
-  if (memobj != MACH_PORT_NULL)
+  if (MACH_PORT_VALID (memobj))
     __mach_port_deallocate (__mach_task_self (), memobj);
 
   if (err == KERN_PROTECTION_FAILURE)