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, 208 insertions, 0 deletions

diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c
new file mode 100644
index 000000000000..d87e1e0a1336
--- /dev/null
+++ b/arch/m68knommu/kernel/sys_m68k.c
@@ -0,0 +1,208 @@
+/*
+ * linux/arch/m68knommu/kernel/sys_m68k.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/m68k
+ * platform.
+ */
+
+#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/file.h>
+#include <linux/utsname.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+#include <asm/cachectl.h>
+#include <asm/traps.h>
+#include <asm/ipc.h>
+#include <asm/cacheflush.h>
+
+/*
+ * 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(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;
+}
+
+/* common code for old and new mmaps */
+static inline long do_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;
+        }
+
+        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;
+}
+
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+        unsigned long prot, unsigned long flags,
+        unsigned long fd, unsigned long pgoff)
+{
+        return do_mmap2(addr, len, prot, flags, fd, pgoff);
+}
+
+/*
+ * Perform the select(nd, in, out, ex, tv) and mmap() system
+ * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to
+ * handle more than 4 system call parameters, so these system calls
+ * used a memory block for parameter passing..
+ */
+
+struct mmap_arg_struct {
+        unsigned long addr;
+        unsigned long len;
+        unsigned long prot;
+        unsigned long flags;
+        unsigned long fd;
+        unsigned long offset;
+};
+
+asmlinkage int old_mmap(struct mmap_arg_struct *arg)
+{
+        struct mmap_arg_struct a;
+        int error = -EFAULT;
+
+        if (copy_from_user(&a, arg, sizeof(a)))
+                goto out;
+
+        error = -EINVAL;
+        if (a.offset & ~PAGE_MASK)
+                goto out;
+
+        a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+
+        error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+out:
+        return error;
+}
+
+struct sel_arg_struct {
+        unsigned long n;
+        fd_set *inp, *outp, *exp;
+        struct timeval *tvp;
+};
+
+asmlinkage int old_select(struct sel_arg_struct *arg)
+{
+        struct sel_arg_struct a;
+
+        if (copy_from_user(&a, arg, sizeof(a)))
+                return -EFAULT;
+        /* sys_select() does the appropriate kernel locking */
+        return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
+}
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage int sys_ipc (uint call, int first, int second,
+                        int third, void *ptr, long fifth)
+{
+        int version;
+
+        version = call >> 16; /* hack for backward compatibility */
+        call &= 0xffff;
+
+        if (call <= SEMCTL)
+                switch (call) {
+                case SEMOP:
+                        return sys_semop (first, (struct sembuf *)ptr, second);
+                case SEMGET:
+                        return sys_semget (first, second, third);
+                case SEMCTL: {
+                        union semun fourth;
+                        if (!ptr)
+                                return -EINVAL;
+                        if (get_user(fourth.__pad, (void **) ptr))
+                                return -EFAULT;
+                        return sys_semctl (first, second, third, fourth);
+                        }
+                default:
+                        return -EINVAL;
+                }
+        if (call <= MSGCTL) 
+                switch (call) {
+                case MSGSND:
+                        return sys_msgsnd (first, (struct msgbuf *) 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 *)ptr,
+                                                    sizeof (tmp)))
+                                        return -EFAULT;
+                                return sys_msgrcv (first, tmp.msgp, second,
+                                                   tmp.msgtyp, third);
+                                }
+                        default:
+                                return sys_msgrcv (first,
+                                                   (struct msgbuf *) ptr,
+                                                   second, fifth, third);
+                        }
+                case MSGGET:
+                        return sys_msgget ((key_t) first, second);
+                case MSGCTL:
+                        return sys_msgctl (first, second,
+                                           (struct msqid_ds *) ptr);
+                default:
+                        return -EINVAL;
+                }
+
+        return -EINVAL;
+}
+
+/* sys_cacheflush -- flush (part of) the processor cache.  */
+asmlinkage int
+sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
+{
+        flush_cache_all();
+        return(0);
+}
+
+asmlinkage int sys_getpagesize(void)
+{
+        return PAGE_SIZE;
+}
+