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, 270 insertions, 0 deletions

diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
new file mode 100644
index 000000000000..efe6b83b53f7
--- /dev/null
+++ b/arch/s390/kernel/sys_s390.c
@@ -0,0 +1,270 @@
+/*
+ *  arch/s390/kernel/sys_s390.c
+ *
+ *  S390 version
+ *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ *               Thomas Spatzier (tspat@de.ibm.com)
+ *
+ *  Derived from "arch/i386/kernel/sys_i386.c"
+ *
+ *  This file contains various random system calls that
+ *  have a non-standard calling sequence on the Linux/s390
+ *  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>
+#ifdef CONFIG_ARCH_S390X
+#include <linux/personality.h>
+#endif /* CONFIG_ARCH_S390X */
+
+#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 __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;
+}
+
+/* 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)
+{
+	long 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;
+}
+
+/*
+ * Perform the select(nd, in, out, ex, tv) and mmap() system
+ * calls. Linux for S/390 isn't able to handle more than 5
+ * 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 long sys_mmap2(struct mmap_arg_struct __user  *arg)
+{
+	struct mmap_arg_struct a;
+	int error = -EFAULT;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		goto out;
+	error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
+out:
+	return error;
+}
+
+asmlinkage long old_mmap(struct mmap_arg_struct __user *arg)
+{
+	struct mmap_arg_struct a;
+	long error = -EFAULT;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		goto out;
+
+	error = -EINVAL;
+	if (a.offset & ~PAGE_MASK)
+		goto out;
+
+	error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+out:
+	return error;
+}
+
+#ifndef CONFIG_ARCH_S390X
+struct sel_arg_struct {
+	unsigned long n;
+	fd_set *inp, *outp, *exp;
+	struct timeval *tvp;
+};
+
+asmlinkage long old_select(struct sel_arg_struct __user *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);
+
+}
+#endif /* CONFIG_ARCH_S390X */
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage long sys_ipc(uint call, int first, unsigned long second,
+				  unsigned long third, void __user *ptr)
+{
+        struct ipc_kludge tmp;
+	int ret;
+
+        switch (call) {
+        case SEMOP:
+		return sys_semtimedop(first, (struct sembuf __user *)ptr,
+				       (unsigned)second, NULL);
+	case SEMTIMEDOP:
+		return sys_semtimedop(first, (struct sembuf __user *)ptr,
+				       (unsigned)second,
+				       (const struct timespec __user *) third);
+        case SEMGET:
+                return sys_semget(first, (int)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, (int)second, third, fourth);
+        }
+        case MSGSND:
+		return sys_msgsnd (first, (struct msgbuf __user *) ptr,
+                                   (size_t)second, third);
+		break;
+        case MSGRCV:
+                if (!ptr)
+                        return -EINVAL;
+                if (copy_from_user (&tmp, (struct ipc_kludge __user *) ptr,
+                                    sizeof (struct ipc_kludge)))
+                        return -EFAULT;
+                return sys_msgrcv (first, tmp.msgp,
+                                   (size_t)second, tmp.msgtyp, third);
+        case MSGGET:
+                return sys_msgget((key_t)first, (int)second);
+        case MSGCTL:
+                return sys_msgctl(first, (int)second,
+				   (struct msqid_ds __user *)ptr);
+
+	case SHMAT: {
+		ulong raddr;
+		ret = do_shmat(first, (char __user *)ptr,
+				(int)second, &raddr);
+		if (ret)
+			return ret;
+		return put_user (raddr, (ulong __user *) third);
+		break;
+        }
+	case SHMDT:
+		return sys_shmdt ((char __user *)ptr);
+	case SHMGET:
+		return sys_shmget(first, (size_t)second, third);
+	case SHMCTL:
+		return sys_shmctl(first, (int)second,
+                                   (struct shmid_ds __user *) ptr);
+	default:
+		return -ENOSYS;
+
+	}
+
+	return -EINVAL;
+}
+
+#ifdef CONFIG_ARCH_S390X
+asmlinkage long s390x_newuname(struct new_utsname __user *name)
+{
+	int ret = sys_newuname(name);
+
+	if (current->personality == PER_LINUX32 && !ret) {
+		ret = copy_to_user(name->machine, "s390\0\0\0\0", 8);
+		if (ret) ret = -EFAULT;
+	}
+	return ret;
+}
+
+asmlinkage long s390x_personality(unsigned long personality)
+{
+	int ret;
+
+	if (current->personality == PER_LINUX32 && personality == PER_LINUX)
+		personality = PER_LINUX32;
+	ret = sys_personality(personality);
+	if (ret == PER_LINUX32)
+		ret = PER_LINUX;
+
+	return ret;
+}
+#endif /* CONFIG_ARCH_S390X */
+
+/*
+ * Wrapper function for sys_fadvise64/fadvise64_64
+ */
+#ifndef CONFIG_ARCH_S390X
+
+asmlinkage long
+s390_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice)
+{
+	return sys_fadvise64(fd, (u64) offset_high << 32 | offset_low,
+			len, advice);
+}
+
+#endif
+
+struct fadvise64_64_args {
+	int fd;
+	long long offset;
+	long long len;
+	int advice;
+};
+
+asmlinkage long
+s390_fadvise64_64(struct fadvise64_64_args __user *args)
+{
+	struct fadvise64_64_args a;
+
+	if ( copy_from_user(&a, args, sizeof(a)) )
+		return -EFAULT;
+	return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
+}
+