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!

1 files changed, 197 insertions, 0 deletions

diff --git a/arch/v850/kernel/syscalls.c b/arch/v850/kernel/syscalls.c
new file mode 100644
index 000000000000..9224cb65f6ec
--- /dev/null
+++ b/arch/v850/kernel/syscalls.c
@@ -0,0 +1,197 @@
+/*
+ * arch/v850/kernel/syscalls.c -- Various system-call definitions not
+ * 	defined in machine-independent code
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * This file was derived the ppc version, arch/ppc/kernel/syscalls.c
+ * ... which was derived from "arch/i386/kernel/sys_i386.c" by Gary Thomas;
+ *     modified by Cort Dougan (cort@cs.nmt.edu)
+ *     and Paul Mackerras (paulus@cs.anu.edu.au).
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/syscalls.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/sys.h>
+#include <linux/ipc.h>
+#include <linux/utsname.h>
+#include <linux/file.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/semaphore.h>
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+int
+sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
+{
+	int version, ret;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	ret = -EINVAL;
+	switch (call) {
+	case SEMOP:
+		ret = sys_semop (first, (struct sembuf *)ptr, second);
+		break;
+	case SEMGET:
+		ret = sys_semget (first, second, third);
+		break;
+	case SEMCTL:
+	{
+		union semun fourth;
+
+		if (!ptr)
+			break;
+		if ((ret = access_ok(VERIFY_READ, ptr, sizeof(long)) ? 0 : -EFAULT)
+		    || (ret = get_user(fourth.__pad, (void **)ptr)))
+			break;
+		ret = sys_semctl (first, second, third, fourth);
+		break;
+	}
+	case MSGSND:
+		ret = sys_msgsnd (first, (struct msgbuf *) ptr, second, third);
+		break;
+	case MSGRCV:
+		switch (version) {
+		case 0: {
+			struct ipc_kludge tmp;
+
+			if (!ptr)
+				break;
+			if ((ret = access_ok(VERIFY_READ, ptr, sizeof(tmp)) ? 0 : -EFAULT)
+			    || (ret = copy_from_user(&tmp,
+						(struct ipc_kludge *) ptr,
+						sizeof (tmp))))
+				break;
+			ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp,
+					  third);
+			break;
+			}
+		default:
+			ret = sys_msgrcv (first, (struct msgbuf *) ptr,
+					  second, fifth, third);
+			break;
+		}
+		break;
+	case MSGGET:
+		ret = sys_msgget ((key_t) first, second);
+		break;
+	case MSGCTL:
+		ret = sys_msgctl (first, second, (struct msqid_ds *) ptr);
+		break;
+	case SHMAT:
+		switch (version) {
+		default: {
+			ulong raddr;
+
+			if ((ret = access_ok(VERIFY_WRITE, (ulong*) third,
+					       sizeof(ulong)) ? 0 : -EFAULT))
+				break;
+			ret = do_shmat (first, (char *) ptr, second, &raddr);
+			if (ret)
+				break;
+			ret = put_user (raddr, (ulong *) third);
+			break;
+			}
+		case 1:	/* iBCS2 emulator entry point */
+			if (!segment_eq(get_fs(), get_ds()))
+				break;
+			ret = do_shmat (first, (char *) ptr, second,
+					 (ulong *) third);
+			break;
+		}
+		break;
+	case SHMDT: 
+		ret = sys_shmdt ((char *)ptr);
+		break;
+	case SHMGET:
+		ret = sys_shmget (first, second, third);
+		break;
+	case SHMCTL:
+		ret = sys_shmctl (first, second, (struct shmid_ds *) ptr);
+		break;
+	}
+
+	return ret;
+}
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+int sys_pipe (int *fildes)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe (fd);
+	if (!error) {
+		if (copy_to_user (fildes, fd, 2*sizeof (int)))
+			error = -EFAULT;
+	}
+	return error;
+}
+
+static inline unsigned long
+do_mmap2 (unsigned long addr, size_t len,
+	 unsigned long prot, unsigned long flags,
+	 unsigned long fd, unsigned long pgoff)
+{
+	struct file * file = NULL;
+	int ret = -EBADF;
+
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	if (! (flags & MAP_ANONYMOUS)) {
+		if (!(file = fget (fd)))
+			goto out;
+	}
+	
+	down_write (&current->mm->mmap_sem);
+	ret = do_mmap_pgoff (file, addr, len, prot, flags, pgoff);
+	up_write (&current->mm->mmap_sem);
+	if (file)
+		fput (file);
+out:
+	return ret;
+}
+
+unsigned long sys_mmap2 (unsigned long addr, size_t len,
+			unsigned long prot, unsigned long flags,
+			unsigned long fd, unsigned long pgoff)
+{
+	return do_mmap2 (addr, len, prot, flags, fd, pgoff);
+}
+
+unsigned long sys_mmap (unsigned long addr, size_t len,
+		       unsigned long prot, unsigned long flags,
+		       unsigned long fd, off_t offset)
+{
+	int err = -EINVAL;
+
+	if (offset & ~PAGE_MASK)
+		goto out;
+
+	err = do_mmap2 (addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+out:
+	return err;
+}