xnu-792.22.5.tar.gz

[apple/xnu.git] / bsd / kern / posix_sem.c

diff --git a/bsd/kern/posix_sem.c b/bsd/kern/posix_sem.c
index b8438447f4832adbb5aeac21c4617228df92de26..1c00fa91a4c27e5eb872824f4b533cf352feff2a 100644 (file)
--- a/bsd/kern/posix_sem.c
+++ b/bsd/kern/posix_sem.c
@@ -1,14 +1,19 @@
 /*
  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -18,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  *     Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
@@ -53,6 +58,7 @@
 #include <sys/malloc.h>
 #include <sys/semaphore.h>
 #include <sys/sysproto.h>
+#include <sys/proc_info.h>
 
 #include <bsm/audit_kernel.h>
 
@@ -182,12 +188,10 @@ psem_lock_init( void )
 {
 
     psx_sem_subsys_lck_grp_attr = lck_grp_attr_alloc_init();
-    lck_grp_attr_setstat(psx_sem_subsys_lck_grp_attr);
 
     psx_sem_subsys_lck_grp = lck_grp_alloc_init("posix shared memory", psx_sem_subsys_lck_grp_attr);
 
     psx_sem_subsys_lck_attr = lck_attr_alloc_init();
-    /* lck_attr_setdebug(psx_sem_subsys_lck_attr); */
     lck_mtx_init(& psx_sem_subsys_mutex, psx_sem_subsys_lck_grp, psx_sem_subsys_lck_attr);
 }
 
@@ -470,6 +474,8 @@ sem_open(struct proc *p, struct sem_open_args *uap, user_addr_t *retval)
                pinfo->psem_mode = cmode;
                pinfo->psem_uid = kauth_cred_getuid(kauth_cred_get());
                pinfo->psem_gid = kauth_cred_get()->cr_gid;
+               bcopy(pnbuf, &pinfo->psem_name[0], PSEMNAMLEN);
+               pinfo->psem_name[PSEMNAMLEN]= 0;
                PSEM_SUBSYS_UNLOCK();
                kret = semaphore_create(kernel_task, &pinfo->psem_semobject,
                             SYNC_POLICY_FIFO, value);
@@ -1028,3 +1034,35 @@ psem_kqfilter(__unused struct fileproc *fp, __unused struct knote *kn,
        return (ENOTSUP);
 }
 
+int
+fill_pseminfo(struct psemnode *pnode, struct psem_info * info)
+{
+       register struct pseminfo *pinfo;
+       struct stat *sb;
+
+       PSEM_SUBSYS_LOCK();
+       if ((pinfo = pnode->pinfo) == PSEMINFO_NULL){
+               PSEM_SUBSYS_UNLOCK();
+               return(EINVAL);
+       }
+
+#if 0
+       if ((pinfo->psem_flags & PSEM_ALLOCATED) != PSEM_ALLOCATED) {
+               PSEM_SUBSYS_UNLOCK();
+               return(EINVAL);
+       }
+#endif
+
+       sb = &info->psem_stat;
+       bzero(sb, sizeof(struct stat));
+
+       sb->st_mode = pinfo->psem_mode;
+       sb->st_uid = pinfo->psem_uid;
+       sb->st_gid = pinfo->psem_gid;
+       sb->st_size = pinfo->psem_usecount;
+       bcopy(&pinfo->psem_name[0], &info->psem_name[0], PSEMNAMLEN+1);
+
+       PSEM_SUBSYS_UNLOCK();
+       return(0);
+}
+