Linux-2.6.12-rc2v2.6.12-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, 258 insertions, 0 deletions

diff --git a/arch/ppc64/kernel/syscalls.c b/arch/ppc64/kernel/syscalls.c
new file mode 100644
index 000000000000..f2865ff8d2f9
--- /dev/null
+++ b/arch/ppc64/kernel/syscalls.c
@@ -0,0 +1,258 @@
+/*
+ * linux/arch/ppc64/kernel/sys_ppc.c
+ *
+ *  PowerPC version 
+ *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Derived from "arch/i386/kernel/sys_i386.c"
+ * Adapted from the i386 version by Gary Thomas
+ * Modified by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras (paulus@cs.anu.edu.au).
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/PPC
+ * platform.
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/syscalls.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.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 <linux/init.h>
+#include <linux/personality.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/semaphore.h>
+#include <asm/time.h>
+#include <asm/unistd.h>
+
+extern unsigned long wall_jiffies;
+
+void
+check_bugs(void)
+{
+}
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage int 
+sys_ipc (uint call, int first, unsigned long second, long third,
+	 void __user *ptr, long fifth)
+{
+	int version, ret;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	ret = -ENOSYS;
+	switch (call) {
+	case SEMOP:
+		ret = sys_semtimedop(first, (struct sembuf __user *)ptr,
+				      (unsigned)second, NULL);
+		break;
+	case SEMTIMEDOP:
+		ret = sys_semtimedop(first, (struct sembuf __user *)ptr,
+				      (unsigned)second,
+				      (const struct timespec __user *) fifth);
+		break;
+	case SEMGET:
+		ret = sys_semget (first, (int)second, third);
+		break;
+	case SEMCTL: {
+		union semun fourth;
+
+		ret = -EINVAL;
+		if (!ptr)
+			break;
+		if ((ret = get_user(fourth.__pad, (void __user * __user *)ptr)))
+			break;
+		ret = sys_semctl(first, (int)second, third, fourth);
+		break;
+	}
+	case MSGSND:
+		ret = sys_msgsnd(first, (struct msgbuf __user *)ptr,
+				  (size_t)second, third);
+		break;
+	case MSGRCV:
+		switch (version) {
+		case 0: {
+			struct ipc_kludge tmp;
+
+			ret = -EINVAL;
+			if (!ptr)
+				break;
+			if ((ret = copy_from_user(&tmp,
+						(struct ipc_kludge __user *) ptr,
+						sizeof (tmp)) ? -EFAULT : 0))
+				break;
+			ret = sys_msgrcv(first, tmp.msgp, (size_t) second,
+					  tmp.msgtyp, third);
+			break;
+		}
+		default:
+			ret = sys_msgrcv (first, (struct msgbuf __user *) ptr,
+					  (size_t)second, fifth, third);
+			break;
+		}
+		break;
+	case MSGGET:
+		ret = sys_msgget ((key_t)first, (int)second);
+		break;
+	case MSGCTL:
+		ret = sys_msgctl(first, (int)second,
+				  (struct msqid_ds __user *)ptr);
+		break;
+	case SHMAT:
+		switch (version) {
+		default: {
+			ulong raddr;
+			ret = do_shmat(first, (char __user *) ptr,
+					(int)second, &raddr);
+			if (ret)
+				break;
+			ret = put_user (raddr, (ulong __user *) third);
+			break;
+		}
+		case 1:	/* iBCS2 emulator entry point */
+			ret = -EINVAL;
+			if (!segment_eq(get_fs(), get_ds()))
+				break;
+			ret = do_shmat(first, (char __user *)ptr,
+					(int)second, (ulong *)third);
+			break;
+		}
+		break;
+	case SHMDT: 
+		ret = sys_shmdt ((char __user *)ptr);
+		break;
+	case SHMGET:
+		ret = sys_shmget (first, (size_t)second, third);
+		break;
+	case SHMCTL:
+		ret = sys_shmctl(first, (int)second,
+				  (struct shmid_ds __user *)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.
+ */
+asmlinkage int sys_pipe(int __user *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;
+}
+
+unsigned long sys_mmap(unsigned long addr, size_t len,
+		       unsigned long prot, unsigned long flags,
+		       unsigned long fd, off_t offset)
+{
+	struct file * file = NULL;
+	unsigned long ret = -EBADF;
+
+	if (!(flags & MAP_ANONYMOUS)) {
+		if (!(file = fget(fd)))
+			goto out;
+	}
+
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	down_write(&current->mm->mmap_sem);
+	ret = do_mmap(file, addr, len, prot, flags, offset);
+	up_write(&current->mm->mmap_sem);
+	if (file)
+		fput(file);
+
+out:
+	return ret;
+}
+
+static int __init set_fakeppc(char *str)
+{
+	if (*str)
+		return 0;
+	init_task.personality = PER_LINUX32;
+	return 1;
+}
+__setup("fakeppc", set_fakeppc);
+
+asmlinkage int sys_uname(struct old_utsname __user * name)
+{
+	int err = -EFAULT;
+	
+	down_read(&uts_sem);
+	if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
+		err = 0;
+	up_read(&uts_sem);
+	
+	return err;
+}
+
+asmlinkage time_t sys64_time(time_t __user * tloc)
+{
+	time_t secs;
+	time_t usecs;
+
+	long tb_delta = tb_ticks_since(tb_last_stamp);
+	tb_delta += (jiffies - wall_jiffies) * tb_ticks_per_jiffy;
+
+	secs  = xtime.tv_sec;  
+	usecs = (xtime.tv_nsec/1000) + tb_delta / tb_ticks_per_usec;
+	while (usecs >= USEC_PER_SEC) {
+		++secs;
+		usecs -= USEC_PER_SEC;
+	}
+
+	if (tloc) {
+		if (put_user(secs,tloc))
+			secs = -EFAULT;
+	}
+
+	return secs;
+}
+
+void do_show_syscall(unsigned long r3, unsigned long r4, unsigned long r5,
+		     unsigned long r6, unsigned long r7, unsigned long r8,
+		     struct pt_regs *regs)
+{
+	printk("syscall %ld(%lx, %lx, %lx, %lx, %lx, %lx) regs=%p current=%p"
+	       " cpu=%d\n", regs->gpr[0], r3, r4, r5, r6, r7, r8, regs,
+	       current, smp_processor_id());
+}
+
+void do_show_syscall_exit(unsigned long r3)
+{
+	printk(" -> %lx, current=%p cpu=%d\n", r3, current, smp_processor_id());
+}