xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / sys / ipc.h

diff --git a/bsd/sys/ipc.h b/bsd/sys/ipc.h
index 4a6ec97350de8d2ef4a579c4c2343f943616458e..a43cacc55a76d89a90d81a3e63052f1b89a845e1 100644 (file)
--- a/bsd/sys/ipc.h
+++ b/bsd/sys/ipc.h
@@ -105,18 +105,21 @@ typedef   __darwin_mode_t mode_t;
 typedef        __int32_t       key_t;
 #endif
 
+#pragma pack(4)
+
 /*
  * Technically, we should force all code references to the new structure
  * definition, not in just the standards conformance case, and leave the
  * legacy interface there for binary compatibility only.  Currently, we
  * are only forcing this for programs requesting standards conformance.
  */
-#if defined(__POSIX_C_SOURCE) || defined(kernel) || defined(__LP64__)
+#if __DARWIN_UNIX03 || defined(KERNEL)
 /*
  * [XSI] Information used in determining permission to perform an IPC
  * operation
  */
-struct __ipc_perm_new {
+struct ipc_perm
+{
        uid_t           uid;            /* [XSI] Owner's user ID */
        gid_t           gid;            /* [XSI] Owner's group ID */
        uid_t           cuid;           /* [XSI] Creator's user ID */
@@ -125,12 +128,12 @@ struct __ipc_perm_new {
        unsigned short  _seq;           /* Reserved for internal use */
        key_t           _key;           /* Reserved for internal use */
 };
-#define        ipc_perm        __ipc_perm_new
-#else  /* !_POSIX_C_SOURCE */
+#define        __ipc_perm_new  ipc_perm
+#else  /* !__DARWIN_UNIX03 */
 #define        ipc_perm        __ipc_perm_old
-#endif /* !_POSIX_C_SOURCE */
+#endif /* !__DARWIN_UNIX03 */
 
-#if !defined(__POSIX_C_SOURCE) && !defined(__LP64__)
+#if !__DARWIN_UNIX03
 /*
  * Legacy structure; this structure is maintained for binary backward
  * compatability with previous versions of the interface.  New code
@@ -145,7 +148,9 @@ struct __ipc_perm_old {
        __uint16_t      seq;            /* Reserved for internal use */
        key_t           key;            /* Reserved for internal use */
 };
-#endif /* !_POSIX_C_SOURCE */
+#endif /* !__DARWIN_UNIX03 */
+
+#pragma pack()
 
 /*
  * [XSI] Definitions shall be provided for the following constants:
@@ -165,14 +170,14 @@ struct __ipc_perm_old {
 #define        IPC_STAT        2               /* Get options */
 
 
-#ifndef _POSIX_C_SOURCE
+#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 
 /* common mode bits */
 #define        IPC_R           000400          /* Read permission */
 #define        IPC_W           000200          /* Write/alter permission */
 #define        IPC_M           010000          /* Modify control info permission */
 
-#endif /* !_POSIX_C_SOURCE */
+#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 
 
 #ifdef BSD_KERNEL_PRIVATE
@@ -184,7 +189,7 @@ struct __ipc_perm_old {
 /* Macros to convert between ipc ids and array indices or sequence ids */
 #define        IPCID_TO_IX(id)         ((id) & 0xffff)
 #define        IPCID_TO_SEQ(id)        (((id) >> 16) & 0xffff)
-#define        IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
+#define        IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) | ((ix) & 0xffff))
 
 struct ucred;