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!
diff --git a/include/linux/shm.h b/include/linux/shm.h
new file mode 100644
index 0000000..80113a1
--- /dev/null
+++ b/include/linux/shm.h
@@ -0,0 +1,108 @@
+#ifndef _LINUX_SHM_H_
+#define _LINUX_SHM_H_
+
+#include <linux/ipc.h>
+#include <linux/errno.h>
+#include <asm/page.h>
+
+/*
+ * SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can
+ * be increased by sysctl
+ */
+
+#define SHMMAX 0x2000000 /* max shared seg size (bytes) */
+#define SHMMIN 1 /* min shared seg size (bytes) */
+#define SHMMNI 4096 /* max num of segs system wide */
+#define SHMALL (SHMMAX/PAGE_SIZE*(SHMMNI/16)) /* max shm system wide (pages) */
+#define SHMSEG SHMMNI /* max shared segs per process */
+
+#include <asm/shmparam.h>
+
+/* Obsolete, used only for backwards compatibility and libc5 compiles */
+struct shmid_ds {
+ struct ipc_perm shm_perm; /* operation perms */
+ int shm_segsz; /* size of segment (bytes) */
+ __kernel_time_t shm_atime; /* last attach time */
+ __kernel_time_t shm_dtime; /* last detach time */
+ __kernel_time_t shm_ctime; /* last change time */
+ __kernel_ipc_pid_t shm_cpid; /* pid of creator */
+ __kernel_ipc_pid_t shm_lpid; /* pid of last operator */
+ unsigned short shm_nattch; /* no. of current attaches */
+ unsigned short shm_unused; /* compatibility */
+ void *shm_unused2; /* ditto - used by DIPC */
+ void *shm_unused3; /* unused */
+};
+
+/* Include the definition of shmid64_ds and shminfo64 */
+#include <asm/shmbuf.h>
+
+/* permission flag for shmget */
+#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
+#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
+
+/* mode for attach */
+#define SHM_RDONLY 010000 /* read-only access */
+#define SHM_RND 020000 /* round attach address to SHMLBA boundary */
+#define SHM_REMAP 040000 /* take-over region on attach */
+#define SHM_EXEC 0100000 /* execution access */
+
+/* super user shmctl commands */
+#define SHM_LOCK 11
+#define SHM_UNLOCK 12
+
+/* ipcs ctl commands */
+#define SHM_STAT 13
+#define SHM_INFO 14
+
+/* Obsolete, used only for backwards compatibility */
+struct shminfo {
+ int shmmax;
+ int shmmin;
+ int shmmni;
+ int shmseg;
+ int shmall;
+};
+
+struct shm_info {
+ int used_ids;
+ unsigned long shm_tot; /* total allocated shm */
+ unsigned long shm_rss; /* total resident shm */
+ unsigned long shm_swp; /* total swapped shm */
+ unsigned long swap_attempts;
+ unsigned long swap_successes;
+};
+
+#ifdef __KERNEL__
+struct shmid_kernel /* private to the kernel */
+{
+ struct kern_ipc_perm shm_perm;
+ struct file * shm_file;
+ int id;
+ unsigned long shm_nattch;
+ unsigned long shm_segsz;
+ time_t shm_atim;
+ time_t shm_dtim;
+ time_t shm_ctim;
+ pid_t shm_cprid;
+ pid_t shm_lprid;
+ struct user_struct *mlock_user;
+};
+
+/* shm_mode upper byte flags */
+#define SHM_DEST 01000 /* segment will be destroyed on last detach */
+#define SHM_LOCKED 02000 /* segment will not be swapped */
+#define SHM_HUGETLB 04000 /* segment will use huge TLB pages */
+
+#ifdef CONFIG_SYSVIPC
+long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr);
+#else
+static inline long do_shmat(int shmid, char __user *shmaddr,
+ int shmflg, unsigned long *addr)
+{
+ return -ENOSYS;
+}
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_SHM_H_ */