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!

1 files changed, 173 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/sys_x86_64.c b/arch/x86_64/kernel/sys_x86_64.c
new file mode 100644
index 000000000000..477d8be57d64
--- /dev/null
+++ b/arch/x86_64/kernel/sys_x86_64.c
@@ -0,0 +1,173 @@
+/*
+ * linux/arch/x86_64/kernel/sys_x86_64.c
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/syscalls.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/personality.h>
+
+#include <asm/uaccess.h>
+#include <asm/ia32.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(int __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;
+}
+
+asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
+	unsigned long fd, unsigned long off)
+{
+	long error;
+	struct file * file;
+
+	error = -EINVAL;
+	if (off & ~PAGE_MASK)
+		goto out;
+
+	error = -EBADF;
+	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, off >> PAGE_SHIFT);
+	up_write(&current->mm->mmap_sem);
+
+	if (file)
+		fput(file);
+out:
+	return error;
+}
+
+static void find_start_end(unsigned long flags, unsigned long *begin,
+			   unsigned long *end)
+{
+#ifdef CONFIG_IA32_EMULATION
+	if (test_thread_flag(TIF_IA32)) { 
+		*begin = TASK_UNMAPPED_32;
+		*end = IA32_PAGE_OFFSET; 
+	} else 
+#endif
+	if (flags & MAP_32BIT) { 
+		/* This is usually used needed to map code in small
+		   model, so it needs to be in the first 31bit. Limit
+		   it to that.  This means we need to move the
+		   unmapped base down for this case. This can give
+		   conflicts with the heap, but we assume that glibc
+		   malloc knows how to fall back to mmap. Give it 1GB
+		   of playground for now. -AK */ 
+		*begin = 0x40000000; 
+		*end = 0x80000000;		
+	} else { 
+		*begin = TASK_UNMAPPED_64; 
+		*end = TASK_SIZE; 
+		}
+} 
+
+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;
+	unsigned long begin, end;
+	
+	find_start_end(flags, &begin, &end); 
+
+	if (len > end)
+		return -ENOMEM;
+
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		vma = find_vma(mm, addr);
+		if (end - len >= addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+	addr = mm->free_area_cache;
+	if (addr < begin) 
+		addr = begin; 
+	start_addr = addr;
+
+full_search:
+	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+		/* At this point:  (!vma || addr < vma->vm_end). */
+		if (end - len < addr) {
+			/*
+			 * Start a new search - just in case we missed
+			 * some holes.
+			 */
+			if (start_addr != begin) {
+				start_addr = addr = begin;
+				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;
+	}
+}
+
+asmlinkage long sys_uname(struct new_utsname __user * name)
+{
+	int err;
+	down_read(&uts_sem);
+	err = copy_to_user(name, &system_utsname, sizeof (*name));
+	up_read(&uts_sem);
+	if (personality(current->personality) == PER_LINUX32) 
+		err |= copy_to_user(&name->machine, "i686", 5); 		
+	return err ? -EFAULT : 0;
+}
+
+asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
+{
+	unsigned long raddr;
+	return do_shmat(shmid,shmaddr,shmflg,&raddr) ?: (long)raddr;
+}
+
+asmlinkage long sys_time64(long __user * tloc)
+{
+	struct timeval now; 
+	int i; 
+
+	do_gettimeofday(&now);
+	i = now.tv_sec;
+	if (tloc) {
+		if (put_user(i,tloc))
+			i = -EFAULT;
+	}
+	return i;
+}