Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 79 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/shm.h b/pfinet/linux-src/include/linux/shm.h
new file mode 100644
index 00000000..a6d13e8d
--- /dev/null
+++ b/pfinet/linux-src/include/linux/shm.h
@@ -0,0 +1,79 @@
+#ifndef _LINUX_SHM_H_
+#define _LINUX_SHM_H_
+
+#include <linux/ipc.h>
+
+#include <asm/shmparam.h>
+
+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 */
+};
+
+struct shmid_kernel
+{	
+	struct shmid_ds		u;
+	/* the following are private */
+	unsigned long		shm_npages;	/* size of segment (pages) */
+	unsigned long		*shm_pages;	/* array of ptrs to frames -> SHMMAX */ 
+	struct vm_area_struct	*attaches;	/* descriptors for attaches */
+};
+
+/* 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 */
+
+/* super user shmctl commands */
+#define SHM_LOCK 	11
+#define SHM_UNLOCK 	12
+
+/* ipcs ctl commands */
+#define SHM_STAT 	13
+#define SHM_INFO 	14
+
+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__
+
+/* 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 */
+
+asmlinkage int sys_shmget (key_t key, int size, int flag);
+asmlinkage int sys_shmat (int shmid, char *shmaddr, int shmflg, unsigned long *addr);
+asmlinkage int sys_shmdt (char *shmaddr);
+asmlinkage int sys_shmctl (int shmid, int cmd, struct shmid_ds *buf);
+extern void shm_unuse(unsigned long entry, unsigned long page);
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_SHM_H_ */