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, 272 insertions, 0 deletions

diff --git a/arch/ppc/kernel/syscalls.c b/arch/ppc/kernel/syscalls.c
new file mode 100644
index 00000000000..124313ce3c0
--- /dev/null
+++ b/arch/ppc/kernel/syscalls.c
@@ -0,0 +1,272 @@
+/*
+ * arch/ppc/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/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/syscalls.h>
+#include <linux/mman.h>
+#include <linux/sys.h>
+#include <linux/ipc.h>
+#include <linux/utsname.h>
+#include <linux/file.h>
+#include <linux/unistd.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/semaphore.h>
+
+void
+check_bugs(void)
+{
+}
+
+/*
+ * 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 __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,
+				      second, NULL);
+		break;
+	case SEMTIMEDOP:
+		ret = sys_semtimedop (first, (struct sembuf __user *)ptr,
+				      second, (const struct timespec __user *) fifth);
+		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 __user *__user *)ptr)))
+			break;
+		ret = sys_semctl (first, second, third, fourth);
+		break;
+		}
+	case MSGSND:
+		ret = sys_msgsnd (first, (struct msgbuf __user *) 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 __user *) ptr,
+					sizeof (tmp)) ? -EFAULT : 0))
+				break;
+			ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp,
+					  third);
+			break;
+			}
+		default:
+			ret = sys_msgrcv (first, (struct msgbuf __user *) 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 __user *) ptr);
+		break;
+	case SHMAT: {
+		ulong raddr;
+
+		if ((ret = access_ok(VERIFY_WRITE, (ulong __user *) third,
+				       sizeof(ulong)) ? 0 : -EFAULT))
+			break;
+		ret = do_shmat (first, (char __user *) ptr, second, &raddr);
+		if (ret)
+			break;
+		ret = put_user (raddr, (ulong __user *) third);
+		break;
+		}
+	case SHMDT:
+		ret = sys_shmdt ((char __user *)ptr);
+		break;
+	case SHMGET:
+		ret = sys_shmget (first, second, third);
+		break;
+	case SHMCTL:
+		ret = sys_shmctl (first, 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.
+ */
+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;
+}
+
+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;
+}
+
+/*
+ * Due to some executables calling the wrong select we sometimes
+ * get wrong args.  This determines how the args are being passed
+ * (a single ptr to them all args passed) then calls
+ * sys_select() with the appropriate args. -- Cort
+ */
+int
+ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval __user *tvp)
+{
+	if ( (unsigned long)n >= 4096 )
+	{
+		unsigned long __user *buffer = (unsigned long __user *)n;
+		if (!access_ok(VERIFY_READ, buffer, 5*sizeof(unsigned long))
+		    || __get_user(n, buffer)
+		    || __get_user(inp, ((fd_set __user * __user *)(buffer+1)))
+		    || __get_user(outp, ((fd_set  __user * __user *)(buffer+2)))
+		    || __get_user(exp, ((fd_set  __user * __user *)(buffer+3)))
+		    || __get_user(tvp, ((struct timeval  __user * __user *)(buffer+4))))
+			return -EFAULT;
+	}
+	return sys_select(n, inp, outp, exp, tvp);
+}
+
+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;
+}
+
+int sys_olduname(struct oldold_utsname __user * name)
+{
+	int error;
+
+	if (!name)
+		return -EFAULT;
+	if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
+		return -EFAULT;
+
+	down_read(&uts_sem);
+	error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
+	error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
+	error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
+	error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
+	error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
+	error -= __put_user(0,name->release+__OLD_UTS_LEN);
+	error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
+	error -= __put_user(0,name->version+__OLD_UTS_LEN);
+	error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
+	error = __put_user(0,name->machine+__OLD_UTS_LEN);
+	up_read(&uts_sem);
+
+	error = error ? -EFAULT : 0;
+	return error;
+}
+
+/*
+ * We put the arguments in a different order so we only use 6
+ * registers for arguments, rather than 7 as sys_fadvise64_64 needs
+ * (because `offset' goes in r5/r6).
+ */
+long ppc_fadvise64_64(int fd, int advice, loff_t offset, loff_t len)
+{
+	return sys_fadvise64_64(fd, offset, len, advice);
+}