diff options
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 59 |
1 files changed, 42 insertions, 17 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 2b16b00a5b11..8ed0cb43118a 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -54,12 +54,6 @@ DECLARE_RWSEM(nommu_vma_sem); struct vm_operations_struct generic_file_vm_ops = { }; -EXPORT_SYMBOL(vfree); -EXPORT_SYMBOL(vmalloc_to_page); -EXPORT_SYMBOL(vmalloc_32); -EXPORT_SYMBOL(vmap); -EXPORT_SYMBOL(vunmap); - /* * Handle all mappings that got truncated by a "truncate()" * system call. @@ -168,7 +162,6 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, finish_or_fault: return i ? : -EFAULT; } - EXPORT_SYMBOL(get_user_pages); DEFINE_RWLOCK(vmlist_lock); @@ -178,6 +171,7 @@ void vfree(void *addr) { kfree(addr); } +EXPORT_SYMBOL(vfree); void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot) { @@ -186,17 +180,19 @@ void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot) */ return kmalloc(size, (gfp_mask | __GFP_COMP) & ~__GFP_HIGHMEM); } +EXPORT_SYMBOL(__vmalloc); struct page * vmalloc_to_page(void *addr) { return virt_to_page(addr); } +EXPORT_SYMBOL(vmalloc_to_page); unsigned long vmalloc_to_pfn(void *addr) { return page_to_pfn(virt_to_page(addr)); } - +EXPORT_SYMBOL(vmalloc_to_pfn); long vread(char *buf, char *addr, unsigned long count) { @@ -237,9 +233,8 @@ void *vmalloc_node(unsigned long size, int node) } EXPORT_SYMBOL(vmalloc_node); -/* - * vmalloc_32 - allocate virtually continguos memory (32bit addressable) - * +/** + * vmalloc_32 - allocate virtually contiguous memory (32bit addressable) * @size: allocation size * * Allocate enough 32bit PA addressable pages to cover @size from the @@ -249,17 +244,33 @@ void *vmalloc_32(unsigned long size) { return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL); } +EXPORT_SYMBOL(vmalloc_32); + +/** + * vmalloc_32_user - allocate zeroed virtually contiguous 32bit memory + * @size: allocation size + * + * The resulting memory area is 32bit addressable and zeroed so it can be + * mapped to userspace without leaking data. + */ +void *vmalloc_32_user(unsigned long size) +{ + return __vmalloc(size, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL); +} +EXPORT_SYMBOL(vmalloc_32_user); void *vmap(struct page **pages, unsigned int count, unsigned long flags, pgprot_t prot) { BUG(); return NULL; } +EXPORT_SYMBOL(vmap); void vunmap(void *addr) { BUG(); } +EXPORT_SYMBOL(vunmap); /* * Implement a stub for vmalloc_sync_all() if the architecture chose not to @@ -269,6 +280,13 @@ void __attribute__((weak)) vmalloc_sync_all(void) { } +int vm_insert_page(struct vm_area_struct *vma, unsigned long addr, + struct page *page) +{ + return -EINVAL; +} +EXPORT_SYMBOL(vm_insert_page); + /* * sys_brk() for the most part doesn't need the global kernel * lock, except when an application is doing something nasty @@ -367,6 +385,11 @@ struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr) return find_vma(mm, addr); } +int expand_stack(struct vm_area_struct *vma, unsigned long address) +{ + return -ENOMEM; +} + /* * look up the first VMA exactly that exactly matches addr * - should be called with mm->mmap_sem at least held readlocked @@ -639,7 +662,7 @@ static int validate_mmap_request(struct file *file, } /* allow the security API to have its say */ - ret = security_file_mmap(file, reqprot, prot, flags); + ret = security_file_mmap(file, reqprot, prot, flags, addr, 0); if (ret < 0) return ret; @@ -989,6 +1012,7 @@ unsigned long do_mmap_pgoff(struct file *file, show_free_areas(); return -ENOMEM; } +EXPORT_SYMBOL(do_mmap_pgoff); /* * handle mapping disposal for uClinux @@ -1069,6 +1093,7 @@ int do_munmap(struct mm_struct *mm, unsigned long addr, size_t len) return 0; } +EXPORT_SYMBOL(do_munmap); asmlinkage long sys_munmap(unsigned long addr, size_t len) { @@ -1159,6 +1184,7 @@ unsigned long do_mremap(unsigned long addr, return vma->vm_start; } +EXPORT_SYMBOL(do_mremap); asmlinkage unsigned long sys_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, @@ -1226,7 +1252,6 @@ unsigned long get_unmapped_area(struct file *file, unsigned long addr, return get_area(file, addr, len, pgoff, flags); } - EXPORT_SYMBOL(get_unmapped_area); /* @@ -1245,7 +1270,7 @@ EXPORT_SYMBOL(get_unmapped_area); * Note this is a helper function intended to be used by LSMs which * wish to use this logic. */ -int __vm_enough_memory(long pages, int cap_sys_admin) +int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) { unsigned long free, allowed; @@ -1336,12 +1361,12 @@ int in_gate_area_no_task(unsigned long addr) return 0; } -struct page *filemap_nopage(struct vm_area_struct *area, - unsigned long address, int *type) +int filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { BUG(); - return NULL; + return 0; } +EXPORT_SYMBOL(filemap_fault); /* * Access another process' address space. |