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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-30 17:13:15 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-06-01 10:37:16 -0400
commit9ac4ed4bd0adec75db13a4b08a39a3918ec0e3c9 (patch)
tree23aba68ec121692cd6f0449535524b6586e8914f /mm/mmap.c
parent8b3ec6814c83d76b85bd13badc48552836c24839 (diff)
downloadlwn-9ac4ed4bd0adec75db13a4b08a39a3918ec0e3c9.tar.gz
lwn-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/mmap.c')
-rw-r--r--mm/mmap.c17
1 files changed, 3 insertions, 14 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;