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!

arch/m32r/kernel/sys_m32r.c

@@ -0,0 +1,217 @@
+/*
+ * linux/arch/m32r/kernel/sys_m32r.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/M32R platform.
+ *
+ * Taken from i386 version.
+ */
+
+#include <linux/config.h>
+#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/uaccess.h>
+#include <asm/cachectl.h>
+#include <asm/cacheflush.h>
+#include <asm/ipc.h>
+
+/*
+ * sys_tas() - test-and-set
+ * linuxthreads testing version
+ */
+#ifndef CONFIG_SMP
+asmlinkage int sys_tas(int *addr)
+{
+	int oldval;
+	unsigned long flags;
+
+	if (!access_ok(VERIFY_WRITE, addr, sizeof (int)))
+		return -EFAULT;
+	local_irq_save(flags);
+	oldval = *addr;
+	*addr = 1;
+	local_irq_restore(flags);
+	return oldval;
+}
+#else /* CONFIG_SMP */
+#include <linux/spinlock.h>
+
+static DEFINE_SPINLOCK(tas_lock);
+
+asmlinkage int sys_tas(int *addr)
+{
+	int oldval;
+
+	if (!access_ok(VERIFY_WRITE, addr, sizeof (int)))
+		return -EFAULT;
+
+	_raw_spin_lock(&tas_lock);
+	oldval = *addr;
+	*addr = 1;
+	_raw_spin_unlock(&tas_lock);
+
+	return oldval;
+}
+#endif /* CONFIG_SMP */
+
+/*
+ * 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 r0, unsigned long r1, unsigned long r2,
+	unsigned long r3, unsigned long r4, unsigned long r5,
+	unsigned long r6, struct pt_regs regs)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe(fd);
+	if (!error) {
+		if (copy_to_user((void *)r0, (void *)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;
+	}
+
+	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;
+}
+
+/*
+ * 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 __user *ptr, 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 * __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: {
+		ulong raddr;
+
+		if (!access_ok(VERIFY_WRITE, (ulong __user *) third,
+				      sizeof(ulong)))
+			return -EFAULT;
+		ret = do_shmat (first, (char __user *) ptr, second, &raddr);
+		if (ret)
+			return ret;
+		return put_user (raddr, (ulong __user *) 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;
+	}
+}
+
+asmlinkage int sys_uname(struct old_utsname * name)
+{
+	int err;
+	if (!name)
+		return -EFAULT;
+	down_read(&uts_sem);
+	err=copy_to_user(name, &system_utsname, sizeof (*name));
+	up_read(&uts_sem);
+	return err?-EFAULT:0;
+}
+
+asmlinkage int sys_cacheflush(void *addr, int bytes, int cache)
+{
+	/* This should flush more selectivly ...  */
+	_flush_cache_all();
+	return 0;
+}
+
+asmlinkage int sys_cachectl(char *addr, int nbytes, int op)
+{
+	/* Not implemented yet. */
+	return -ENOSYS;
+}
+