* @(#)ipc.h 8.4 (Berkeley) 2/19/95
*/
-#include <sys/appleapiopts.h>
-
/*
* SVID compatible ipc.h file
*/
#ifndef _SYS_IPC_H_
#define _SYS_IPC_H_
-struct ipc_perm {
- ushort cuid; /* creator user id */
- ushort cgid; /* creator group id */
- ushort uid; /* user id */
- ushort gid; /* group id */
- ushort mode; /* r/w permission */
- ushort seq; /* sequence # (to generate unique msg/sem/shm id) */
- key_t key; /* user specified msg/sem/shm key */
+#include <sys/appleapiopts.h>
+#include <sys/cdefs.h>
+
+#include <sys/_types.h>
+
+/*
+ * [XSI] The uid_t, gid_t, mode_t, and key_t types SHALL be defined as
+ * described in <sys/types.h>.
+ */
+#ifndef _UID_T
+typedef __darwin_uid_t uid_t; /* user id */
+#define _UID_T
+#endif
+
+#ifndef _GID_T
+typedef __darwin_gid_t gid_t;
+#define _GID_T
+#endif
+
+#ifndef _MODE_T
+typedef __darwin_mode_t mode_t;
+#define _MODE_T
+#endif
+
+#ifndef _KEY_T
+#define _KEY_T
+typedef __int32_t key_t;
+#endif
+
+/*
+ * 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__)
+/*
+ * [XSI] Information used in determining permission to perform an IPC
+ * operation
+ */
+struct __ipc_perm_new {
+ uid_t uid; /* [XSI] Owner's user ID */
+ gid_t gid; /* [XSI] Owner's group ID */
+ uid_t cuid; /* [XSI] Creator's user ID */
+ gid_t cgid; /* [XSI] Creator's group ID */
+ mode_t mode; /* [XSI] Read/write permission */
+ 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 __ipc_perm_old
+#endif /* !_POSIX_C_SOURCE */
-/* common mode bits */
-#define IPC_R 000400 /* read permission */
-#define IPC_W 000200 /* write/alter permission */
-#define IPC_M 010000 /* permission to change control info */
+#if !defined(__POSIX_C_SOURCE) && !defined(__LP64__)
+/*
+ * Legacy structure; this structure is maintained for binary backward
+ * compatability with previous versions of the interface. New code
+ * should not use this interface, since ID values may be truncated.
+ */
+struct __ipc_perm_old {
+ __uint16_t cuid; /* Creator's user ID */
+ __uint16_t cgid; /* Creator's group ID */
+ __uint16_t uid; /* Owner's user ID */
+ __uint16_t gid; /* Owner's group ID */
+ mode_t mode; /* Read/Write permission */
+ __uint16_t seq; /* Reserved for internal use */
+ key_t key; /* Reserved for internal use */
+};
+#endif /* !_POSIX_C_SOURCE */
+
+/*
+ * [XSI] Definitions shall be provided for the following constants:
+ */
+
+/* Mode bits */
+#define IPC_CREAT 001000 /* Create entry if key does not exist */
+#define IPC_EXCL 002000 /* Fail if key exists */
+#define IPC_NOWAIT 004000 /* Error if request must wait */
-/* SVID required constants (same values as system 5) */
-#define IPC_CREAT 001000 /* create entry if key does not exist */
-#define IPC_EXCL 002000 /* fail if key exists */
-#define IPC_NOWAIT 004000 /* error if request must wait */
+/* Keys */
+#define IPC_PRIVATE ((key_t)0) /* Private key */
-#define IPC_PRIVATE (key_t)0 /* private key */
+/* Control commands */
+#define IPC_RMID 0 /* Remove identifier */
+#define IPC_SET 1 /* Set options */
+#define IPC_STAT 2 /* Get options */
-#define IPC_RMID 0 /* remove identifier */
-#define IPC_SET 1 /* set options */
-#define IPC_STAT 2 /* get options */
-#ifdef KERNEL
-#ifdef __APPLE_API_PRIVATE
+#ifndef _POSIX_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 */
+
+
+#ifdef BSD_KERNEL_PRIVATE
+/*
+ * Kernel implementation details which should not be utilized by user
+ * space programs.
+ */
/* Macros to convert between ipc ids and array indices or sequence ids */
#define IPCID_TO_IX(id) ((id) & 0xffff)
struct ucred;
-int ipcperm __P((struct ucred *, struct ipc_perm *, int));
-#endif /* __APPLE_API_PRIVATE */
-#else /* ! KERNEL */
-
-/* XXX doesn't really belong here, but has been historical practice in SysV. */
+int ipcperm(struct ucred *, struct ipc_perm *, int);
+#endif /* BSD_KERNEL_PRIVATE */
-#include <sys/cdefs.h>
+#ifndef KERNEL
__BEGIN_DECLS
-key_t ftok __P((const char *, int));
+/* [XSI] */
+key_t ftok(const char *, int);
__END_DECLS
-#endif /* KERNEL */
+#endif /* !KERNEL */
#endif /* !_SYS_IPC_H_ */
projects / apple / xnu.git / blobdiff