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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-30 03:45:10 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-30 04:21:22 +0200 |
| commit | aa28de275a248879f9828cb9f7ee7e119c72ff96 (patch) | |
| tree | ea50dff24c17d06ed9a799b38e8089996c3ccff2 /lib | |
| parent | copy_{to,from}_user(): consolidate object size checks (diff) | |
| download | linux-aa28de275a248879f9828cb9f7ee7e119c72ff96.tar.xz linux-aa28de275a248879f9828cb9f7ee7e119c72ff96.zip | |
iov_iter/hardening: move object size checks to inlined part
There we actually have useful information about object sizes.
Note: this patch has them done for all iov_iter flavours.
Right now we do them twice in iovec case, but that'll change
very shortly.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/iov_iter.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index f835964c9485..bc4a63ebe91a 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -535,7 +535,7 @@ static size_t copy_pipe_to_iter(const void *addr, size_t bytes, return bytes; } -size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i) +size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i) { const char *from = addr; if (unlikely(i->type & ITER_PIPE)) @@ -550,9 +550,9 @@ size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i) return bytes; } -EXPORT_SYMBOL(copy_to_iter); +EXPORT_SYMBOL(_copy_to_iter); -size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i) +size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i) { char *to = addr; if (unlikely(i->type & ITER_PIPE)) { @@ -569,9 +569,9 @@ size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i) return bytes; } -EXPORT_SYMBOL(copy_from_iter); +EXPORT_SYMBOL(_copy_from_iter); -bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i) +bool _copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i) { char *to = addr; if (unlikely(i->type & ITER_PIPE)) { @@ -594,9 +594,9 @@ bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i) iov_iter_advance(i, bytes); return true; } -EXPORT_SYMBOL(copy_from_iter_full); +EXPORT_SYMBOL(_copy_from_iter_full); -size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i) +size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i) { char *to = addr; if (unlikely(i->type & ITER_PIPE)) { @@ -613,9 +613,9 @@ size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i) return bytes; } -EXPORT_SYMBOL(copy_from_iter_nocache); +EXPORT_SYMBOL(_copy_from_iter_nocache); -bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i) +bool _copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i) { char *to = addr; if (unlikely(i->type & ITER_PIPE)) { @@ -637,7 +637,7 @@ bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i) iov_iter_advance(i, bytes); return true; } -EXPORT_SYMBOL(copy_from_iter_full_nocache); +EXPORT_SYMBOL(_copy_from_iter_full_nocache); size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes, struct iov_iter *i) @@ -663,7 +663,7 @@ size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes, } if (i->type & (ITER_BVEC|ITER_KVEC)) { void *kaddr = kmap_atomic(page); - size_t wanted = copy_from_iter(kaddr + offset, bytes, i); + size_t wanted = _copy_from_iter(kaddr + offset, bytes, i); kunmap_atomic(kaddr); return wanted; } else |