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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/ipc.h
download96b-common-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/ipc.h')
-rw-r--r--include/linux/ipc.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
new file mode 100644
index 000000000000..b291189737e7
--- /dev/null
+++ b/include/linux/ipc.h
@@ -0,0 +1,75 @@
+#ifndef _LINUX_IPC_H
+#define _LINUX_IPC_H
+
+#include <linux/types.h>
+
+#define IPC_PRIVATE ((__kernel_key_t) 0)
+
+/* Obsolete, used only for backwards compatibility and libc5 compiles */
+struct ipc_perm
+{
+ __kernel_key_t key;
+ __kernel_uid_t uid;
+ __kernel_gid_t gid;
+ __kernel_uid_t cuid;
+ __kernel_gid_t cgid;
+ __kernel_mode_t mode;
+ unsigned short seq;
+};
+
+/* Include the definition of ipc64_perm */
+#include <asm/ipcbuf.h>
+
+/* resource get request flags */
+#define IPC_CREAT 00001000 /* create if key is nonexistent */
+#define IPC_EXCL 00002000 /* fail if key exists */
+#define IPC_NOWAIT 00004000 /* return error on wait */
+
+/* these fields are used by the DIPC package so the kernel as standard
+ should avoid using them if possible */
+
+#define IPC_DIPC 00010000 /* make it distributed */
+#define IPC_OWN 00020000 /* this machine is the DIPC owner */
+
+/*
+ * Control commands used with semctl, msgctl and shmctl
+ * see also specific commands in sem.h, msg.h and shm.h
+ */
+#define IPC_RMID 0 /* remove resource */
+#define IPC_SET 1 /* set ipc_perm options */
+#define IPC_STAT 2 /* get ipc_perm options */
+#define IPC_INFO 3 /* see ipcs */
+
+/*
+ * Version flags for semctl, msgctl, and shmctl commands
+ * These are passed as bitflags or-ed with the actual command
+ */
+#define IPC_OLD 0 /* Old version (no 32-bit UID support on many
+ architectures) */
+#define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger
+ message sizes, etc. */
+
+#ifdef __KERNEL__
+
+#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
+
+/* used by in-kernel data structures */
+struct kern_ipc_perm
+{
+ spinlock_t lock;
+ int deleted;
+ key_t key;
+ uid_t uid;
+ gid_t gid;
+ uid_t cuid;
+ gid_t cgid;
+ mode_t mode;
+ unsigned long seq;
+ void *security;
+};
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_IPC_H */
+
+