xnu-792.25.20.tar.gz

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

diff --git a/bsd/kern/posix_shm.c b/bsd/kern/posix_shm.c
index f413dab1b36fd88f6da6d9e42a09aa630def3d1d..4681099c2b41712d7872cc69314b9a5cdf9a9155 100644 (file)
--- a/bsd/kern/posix_shm.c
+++ b/bsd/kern/posix_shm.c
@@ -1,29 +1,23 @@
 /*
  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_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. 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.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * 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
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
  */
 /*
  *     Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
@@ -59,6 +53,7 @@
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/sysproto.h>
+#include <sys/proc_info.h>
 
 #include <bsm/audit_kernel.h>
 
@@ -87,6 +82,7 @@
 #define f_data f_fglob->fg_data
 #define        PSHMNAMLEN      31      /* maximum name segment length we bother with */
 
+
 struct pshminfo {
        unsigned int    pshm_flags;
        unsigned int    pshm_usecount;
@@ -196,12 +192,10 @@ pshm_lock_init( void )
 {
 
     psx_shm_subsys_lck_grp_attr = lck_grp_attr_alloc_init();
-    lck_grp_attr_setstat(psx_shm_subsys_lck_grp_attr);
 
     psx_shm_subsys_lck_grp = lck_grp_alloc_init("posix shared memory", psx_shm_subsys_lck_grp_attr);
 
     psx_shm_subsys_lck_attr = lck_attr_alloc_init();
-    /* lck_attr_setdebug(psx_shm_subsys_lck_attr); */
     lck_mtx_init(& psx_shm_subsys_mutex, psx_shm_subsys_lck_grp, psx_shm_subsys_lck_attr);
 }
 
@@ -485,6 +479,8 @@ shm_open(struct proc *p, struct shm_open_args *uap, register_t *retval)
                     pinfo->pshm_mode = cmode;
                     pinfo->pshm_uid = kauth_cred_getuid(kauth_cred_get());
                     pinfo->pshm_gid = kauth_cred_get()->cr_gid;
+                       bcopy(pnbuf, &pinfo->pshm_name[0], PSHMNAMLEN);
+                       pinfo->pshm_name[PSHMNAMLEN]=0;
                 } else {
                     /*  already exists */
                         if( pinfo->pshm_flags & PSHM_INDELETE) {
@@ -565,7 +561,7 @@ shm_open(struct proc *p, struct shm_open_args *uap, register_t *retval)
        fp->f_type = DTYPE_PSXSHM;
        fp->f_ops = &pshmops;
        fp->f_data = (caddr_t)pnode;
-       *fdflags(p, indx) &= ~UF_RESERVED;
+       procfdtbl_releasefd(p, indx, NULL);
        fp_drop(p, indx, fp, 1);
        proc_fdunlock(p);
 
@@ -593,9 +589,9 @@ pshm_truncate(__unused struct proc *p, struct fileproc *fp, __unused int fd,
        struct pshminfo * pinfo;
        struct pshmnode * pnode ;
        kern_return_t kret;
-       vm_offset_t user_addr;
+       mach_vm_offset_t user_addr;
        mem_entry_name_port_t mem_object;
-       vm_size_t size;
+       mach_vm_size_t size;
 
        if (fp->f_type != DTYPE_PSXSHM) {
                return(EINVAL);
@@ -618,17 +614,17 @@ pshm_truncate(__unused struct proc *p, struct fileproc *fp, __unused int fd,
 
        PSHM_SUBSYS_UNLOCK();
        size = round_page_64(length);
-       kret = vm_allocate(current_map(), &user_addr, size, VM_FLAGS_ANYWHERE);
+       kret = mach_vm_allocate(current_map(), &user_addr, size, VM_FLAGS_ANYWHERE);
        if (kret != KERN_SUCCESS) 
                goto out;
 
-       kret = mach_make_memory_entry (current_map(), &size,
+       kret = mach_make_memory_entry_64 (current_map(), &size,
                        user_addr, VM_PROT_DEFAULT, &mem_object, 0);
 
        if (kret != KERN_SUCCESS) 
                goto out;
        
-       vm_deallocate(current_map(), user_addr, size);
+       mach_vm_deallocate(current_map(), user_addr, size);
 
        PSHM_SUBSYS_LOCK();
        pinfo->pshm_flags &= ~PSHM_DEFINED;
@@ -1022,3 +1018,32 @@ pshm_kqfilter(__unused struct fileproc *fp, __unused struct knote *kn,
 {
        return(ENOTSUP);
 }
+
+int
+fill_pshminfo(struct pshmnode * pshm, struct pshm_info * info)
+{
+       struct pshminfo *pinfo;
+       struct stat *sb;
+       
+       PSHM_SUBSYS_LOCK();
+       if ((pinfo = pshm->pinfo) == PSHMINFO_NULL){
+               PSHM_SUBSYS_UNLOCK();
+               return(EINVAL);
+       }
+
+       sb = &info->pshm_stat;
+
+       bzero(sb, sizeof(struct stat)); 
+       sb->st_mode = pinfo->pshm_mode;
+       sb->st_uid = pinfo->pshm_uid;
+       sb->st_gid = pinfo->pshm_gid;
+       sb->st_size = pinfo->pshm_length;
+
+       info->pshm_mappaddr = pshm->mapp_addr;
+       bcopy(&pinfo->pshm_name[0], &info->pshm_name[0], PSHMNAMLEN+1); 
+
+       PSHM_SUBSYS_UNLOCK();
+       return(0);
+}
+
+