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, 214 insertions, 0 deletions

diff --git a/arch/frv/kernel/sys_frv.c b/arch/frv/kernel/sys_frv.c
new file mode 100644
index 000000000000..931aa6d895e3
--- /dev/null
+++ b/arch/frv/kernel/sys_frv.c
@@ -0,0 +1,214 @@
+/* sys_frv.c: FRV arch-specific syscall wrappers
+ *
+ * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ * - Derived from arch/m68k/kernel/sys_m68k.c
+ *
+ * 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/mman.h>
+#include <linux/file.h>
+#include <linux/utsname.h>
+#include <linux/syscalls.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+asmlinkage long sys_pipe(unsigned long * 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;
+}
+
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+                          unsigned long prot, unsigned long flags,
+                          unsigned long fd, unsigned long pgoff)
+{
+        int error = -EBADF;
+        struct file * file = NULL;
+
+        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+        if (!(flags & MAP_ANONYMOUS)) {
+                file = fget(fd);
+                if (!file)
+                        goto out;
+        }
+
+        /* As with sparc32, make sure the shift for mmap2 is constant
+           (12), no matter what PAGE_SIZE we have.... */
+
+        /* But unlike sparc32, don't just silently break if we're
+           trying to map something we can't */
+        if (pgoff & ((1<<(PAGE_SHIFT-12))-1))
+                return -EINVAL;
+
+        pgoff >>= (PAGE_SHIFT - 12);
+
+        down_write(&current->mm->mmap_sem);
+        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+        up_write(&current->mm->mmap_sem);
+
+        if (file)
+                fput(file);
+out:
+        return error;
+}
+
+#if 0 /* DAVIDM - do we want this */
+struct mmap_arg_struct64 {
+        __u32 addr;
+        __u32 len;
+        __u32 prot;
+        __u32 flags;
+        __u64 offset; /* 64 bits */
+        __u32 fd;
+};
+
+asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)
+{
+        int error = -EFAULT;
+        struct file * file = NULL;
+        struct mmap_arg_struct64 a;
+        unsigned long pgoff;
+
+        if (copy_from_user(&a, arg, sizeof(a)))
+                return -EFAULT;
+
+        if ((long)a.offset & ~PAGE_MASK)
+                return -EINVAL;
+
+        pgoff = a.offset >> PAGE_SHIFT;
+        if ((a.offset >> PAGE_SHIFT) != pgoff)
+                return -EINVAL;
+
+        if (!(a.flags & MAP_ANONYMOUS)) {
+                error = -EBADF;
+                file = fget(a.fd);
+                if (!file)
+                        goto out;
+        }
+        a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+
+        down_write(&current->mm->mmap_sem);
+        error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);
+        up_write(&current->mm->mmap_sem);
+        if (file)
+                fput(file);
+out:
+        return error;
+}
+#endif
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage long sys_ipc(unsigned long call,
+                        unsigned long first,
+                        unsigned long second,
+                        unsigned long third,
+                        void __user *ptr,
+                        unsigned long fifth)
+{
+        int version, ret;
+
+        version = call >> 16; /* hack for backward compatibility */
+        call &= 0xffff;
+
+        switch (call) {
+        case SEMOP:
+                return sys_semtimedop(first, (struct sembuf __user *)ptr, second, NULL);
+        case SEMTIMEDOP:
+                return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
+                                      (const struct timespec __user *)fifth);
+
+        case SEMGET:
+                return sys_semget (first, second, third);
+        case SEMCTL: {
+                union semun fourth;
+                if (!ptr)
+                        return -EINVAL;
+                if (get_user(fourth.__pad, (void * __user *) ptr))
+                        return -EFAULT;
+                return sys_semctl (first, second, third, fourth);
+        }
+
+        case MSGSND:
+                return sys_msgsnd (first, (struct msgbuf __user *) ptr,
+                                   second, third);
+        case MSGRCV:
+                switch (version) {
+                case 0: {
+                        struct ipc_kludge tmp;
+                        if (!ptr)
+                                return -EINVAL;
+
+                        if (copy_from_user(&tmp,
+                                           (struct ipc_kludge __user *) ptr,
+                                           sizeof (tmp)))
+                                return -EFAULT;
+                        return sys_msgrcv (first, tmp.msgp, second,
+                                           tmp.msgtyp, third);
+                }
+                default:
+                        return sys_msgrcv (first,
+                                           (struct msgbuf __user *) ptr,
+                                           second, fifth, third);
+                }
+        case MSGGET:
+                return sys_msgget ((key_t) first, second);
+        case MSGCTL:
+                return sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
+
+        case SHMAT:
+                switch (version) {
+                default: {
+                        ulong raddr;
+                        ret = do_shmat (first, (char __user *) ptr, second, &raddr);
+                        if (ret)
+                                return ret;
+                        return put_user (raddr, (ulong __user *) third);
+                }
+                case 1: /* iBCS2 emulator entry point */
+                        if (!segment_eq(get_fs(), get_ds()))
+                                return -EINVAL;
+                        /* The "(ulong *) third" is valid _only_ because of the kernel segment thing */
+                        return do_shmat (first, (char __user *) ptr, second, (ulong *) third);
+                }
+        case SHMDT:
+                return sys_shmdt ((char __user *)ptr);
+        case SHMGET:
+                return sys_shmget (first, second, third);
+        case SHMCTL:
+                return sys_shmctl (first, second,
+                                   (struct shmid_ds __user *) ptr);
+        default:
+                return -ENOSYS;
+        }
+}