#include <linux/file.h>
#include <linux/utsname.h>
#include <linux/personality.h>
-#include <linux/vs_cvirt.h>
#include <asm/uaccess.h>
-#include <asm/ipc.h>
#include <asm/ia32.h>
/*
return error;
}
-long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
+asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off)
{
long 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) {
+ if (!test_thread_flag(TIF_IA32) && (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
of playground for now. -AK */
*begin = 0x40000000;
*end = 0x80000000;
- } else {
- *begin = TASK_UNMAPPED_64;
+ } else {
+ *begin = TASK_UNMAPPED_BASE;
*end = TASK_SIZE;
- }
+ }
}
unsigned long
(!vma || addr + len <= vma->vm_start))
return addr;
}
+ if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32))
+ && len <= mm->cached_hole_size) {
+ mm->cached_hole_size = 0;
+ mm->free_area_cache = begin;
+ }
addr = mm->free_area_cache;
if (addr < begin)
addr = begin;
*/
if (start_addr != begin) {
start_addr = addr = begin;
+ mm->cached_hole_size = 0;
goto full_search;
}
return -ENOMEM;
mm->free_area_cache = addr + len;
return addr;
}
- addr = vma->vm_end;
- }
-}
-
-unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
- const unsigned long len, const unsigned long pgoff,
- const unsigned long flags)
-{
- struct vm_area_struct *vma, *prev_vma;
- struct mm_struct *mm = current->mm;
- unsigned long base = mm->mmap_base, addr = addr0;
- int first_time = 1;
- unsigned long begin, end;
-
- find_start_end(flags, &begin, &end);
-
- /* requested length too big for entire address space */
- if (len > end)
- return -ENOMEM;
-
- /* dont allow allocations above current base */
- if (mm->free_area_cache > base)
- mm->free_area_cache = base;
-
- /* requesting a specific address */
- if (addr) {
- addr = PAGE_ALIGN(addr);
- vma = find_vma(mm, addr);
- if (end - len >= addr &&
- (!vma || addr + len <= vma->vm_start))
- return addr;
- }
-
-try_again:
- /* make sure it can fit in the remaining address space */
- if (mm->free_area_cache < len)
- goto fail;
-
- /* either no address requested or cant fit in requested address hole */
- addr = (mm->free_area_cache - len) & PAGE_MASK;
- do {
- /*
- * Lookup failure means no vma is above this address,
- * i.e. return with success:
- */
- if (!(vma = find_vma_prev(mm, addr, &prev_vma)))
- return addr;
-
- /*
- * new region fits between prev_vma->vm_end and
- * vma->vm_start, use it:
- */
- if (addr+len <= vma->vm_start &&
- (!prev_vma || (addr >= prev_vma->vm_end)))
- /* remember the address as a hint for next time */
- return (mm->free_area_cache = addr);
- else
- /* pull free_area_cache down to the first hole */
- if (mm->free_area_cache == vma->vm_end)
- mm->free_area_cache = vma->vm_start;
-
- /* try just below the current vma->vm_start */
- addr = vma->vm_start-len;
- } while (len <= vma->vm_start);
+ if (addr + mm->cached_hole_size < vma->vm_start)
+ mm->cached_hole_size = vma->vm_start - addr;
-fail:
- /*
- * if hint left us with no space for the requested
- * mapping then try again:
- */
- if (first_time) {
- mm->free_area_cache = base;
- first_time = 0;
- goto try_again;
+ addr = vma->vm_end;
}
- /*
- * A failed mmap() very likely causes application failure,
- * so fall back to the bottom-up function here. This scenario
- * can happen with large stack limits and large mmap()
- * allocations.
- */
- mm->free_area_cache = begin;
- addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
- /*
- * Restore the topdown base:
- */
- mm->free_area_cache = base;
-
- return addr;
}
asmlinkage long sys_uname(struct new_utsname __user * name)
{
int err;
down_read(&uts_sem);
- err = copy_to_user(name, vx_new_utsname(), sizeof (*name));
+ err = copy_to_user(name, 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;
-}
git://git.onelab.eu / linux-2.6.git / blobdiff