diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-30 23:13:15 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-06-01 16:37:16 +0200 |
| commit | 9ac4ed4bd0adec75db13a4b08a39a3918ec0e3c9 (patch) | |
| tree | 23aba68ec121692cd6f0449535524b6586e8914f /mm | |
| parent | take security_mmap_file() outside of ->mmap_sem (diff) | |
| download | linux-9ac4ed4bd0adec75db13a4b08a39a3918ec0e3c9.tar.xz linux-9ac4ed4bd0adec75db13a4b08a39a3918ec0e3c9.zip | |
move security_mmap_addr() to saner place
it really should be done by get_unmapped_area(); that cuts down on
the amount of callers considerably and it's the right place for
that stuff anyway.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mmap.c | 17 | ||||
| -rw-r--r-- | mm/mremap.c | 7 |
2 files changed, 3 insertions, 21 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 34b280f4238d..131521e12f13 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -978,7 +978,6 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, struct mm_struct * mm = current->mm; struct inode *inode; vm_flags_t vm_flags; - int error; /* * Does the application expect PROT_READ to imply PROT_EXEC? @@ -1100,10 +1099,6 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, } } - error = security_mmap_addr(addr); - if (error) - return error; - return mmap_region(file, addr, len, flags, vm_flags, pgoff); } @@ -1633,7 +1628,9 @@ get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, if (addr & ~PAGE_MASK) return -EINVAL; - return arch_rebalance_pgtables(addr, len); + addr = arch_rebalance_pgtables(addr, len); + error = security_mmap_addr(addr); + return error ? error : addr; } EXPORT_SYMBOL(get_unmapped_area); @@ -2210,10 +2207,6 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) if (!len) return addr; - error = security_mmap_addr(addr); - if (error) - return error; - flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED); @@ -2566,10 +2559,6 @@ int install_special_mapping(struct mm_struct *mm, vma->vm_ops = &special_mapping_vmops; vma->vm_private_data = pages; - ret = security_mmap_addr(vma->vm_start); - if (ret) - goto out; - ret = insert_vm_struct(mm, vma); if (ret) goto out; diff --git a/mm/mremap.c b/mm/mremap.c index ebf10892b63d..21fed202ddad 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -371,10 +371,6 @@ static unsigned long mremap_to(unsigned long addr, if ((addr <= new_addr) && (addr+old_len) > new_addr) goto out; - ret = security_mmap_addr(new_addr); - if (ret) - goto out; - ret = do_munmap(mm, new_addr, new_len); if (ret) goto out; @@ -532,9 +528,6 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, goto out; } - ret = security_mmap_addr(new_addr); - if (ret) - goto out; ret = move_vma(vma, addr, old_len, new_len, new_addr); } out: |