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, 289 insertions, 0 deletions

diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
new file mode 100644
index 00000000000..df5ac294c37
--- /dev/null
+++ b/arch/sh/kernel/sys_sh.c
@@ -0,0 +1,289 @@
+/*
+ * linux/arch/sh/kernel/sys_sh.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/SuperH
+ * platform.
+ *
+ * Taken from i386 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/file.h>
+#include <linux/utsname.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 int sys_pipe(unsigned long r4, unsigned long r5,
+	unsigned long r6, unsigned long r7,
+	struct pt_regs regs)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe(fd);
+	if (!error) {
+		regs.regs[1] = fd[1];
+		return fd[0];
+	}
+	return error;
+}
+
+#if defined(HAVE_ARCH_UNMAPPED_AREA)
+/*
+ * To avoid cache alias, we map the shard page with same color.
+ */
+#define COLOUR_ALIGN(addr)	(((addr)+SHMLBA-1)&~(SHMLBA-1))
+
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
+	unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct *vma;
+	unsigned long start_addr;
+
+	if (flags & MAP_FIXED) {
+		/* We do not accept a shared mapping if it would violate
+		 * cache aliasing constraints.
+		 */
+		if ((flags & MAP_SHARED) && (addr & (SHMLBA - 1)))
+			return -EINVAL;
+		return addr;
+	}
+
+	if (len > TASK_SIZE)
+		return -ENOMEM;
+
+	if (addr) {
+		if (flags & MAP_PRIVATE)
+			addr = PAGE_ALIGN(addr);
+		else
+			addr = COLOUR_ALIGN(addr);
+		vma = find_vma(mm, addr);
+		if (TASK_SIZE - len >= addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+	if (flags & MAP_PRIVATE)
+		addr = PAGE_ALIGN(mm->free_area_cache);
+	else
+		addr = COLOUR_ALIGN(mm->free_area_cache);
+	start_addr = addr;
+
+full_search:
+	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+		/* At this point:  (!vma || addr < vma->vm_end). */
+		if (TASK_SIZE - len < addr) {
+			/*
+			 * Start a new search - just in case we missed
+			 * some holes.
+			 */
+			if (start_addr != TASK_UNMAPPED_BASE) {
+				start_addr = addr = TASK_UNMAPPED_BASE;
+				goto full_search;
+			}
+			return -ENOMEM;
+		}
+		if (!vma || addr + len <= vma->vm_start) {
+			/*
+			 * Remember the place where we stopped the search:
+			 */
+			mm->free_area_cache = addr + len;
+			return addr;
+		}
+		addr = vma->vm_end;
+		if (!(flags & MAP_PRIVATE))
+			addr = COLOUR_ALIGN(addr);
+	}
+}
+#endif
+
+static inline long
+do_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 
+	 unsigned long flags, int 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 int old_mmap(unsigned long addr, unsigned long len,
+	unsigned long prot, unsigned long flags,
+	int fd, unsigned long off)
+{
+	if (off & ~PAGE_MASK)
+		return -EINVAL;
+	return do_mmap2(addr, len, prot, flags, fd, off>>PAGE_SHIFT);
+}
+
+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);
+}
+
+/*
+ * 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;
+
+	if (call <= SEMCTL)
+		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);
+			}
+		default:
+			return -EINVAL;
+		}
+
+	if (call <= MSGCTL) 
+		switch (call) {
+		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);
+		default:
+			return -EINVAL;
+		}
+	if (call <= SHMCTL) 
+		switch (call) {
+		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;
+				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 -EINVAL;
+		}
+	
+	return -EINVAL;
+}
+
+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 ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
+			     size_t count, long dummy, loff_t pos)
+{
+	return sys_pread64(fd, buf, count, pos);
+}
+
+asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char * buf,
+			      size_t count, long dummy, loff_t pos)
+{
+	return sys_pwrite64(fd, buf, count, pos);
+}
+
+asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
+				u32 len0, u32 len1, int advice)
+{
+#ifdef  __LITTLE_ENDIAN__
+	return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
+				(u64)len1 << 32 | len0,	advice);
+#else
+	return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
+				(u64)len0 << 32 | len1,	advice);
+#endif
+}