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fortify: remove last uses of __bos_trivially_not*

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Since we're using the gt/ge ones a lot now, having `not` versions
probably just adds to confusion. Swap out their remaining uses and
delete them.

Bug: 141267932
Test: m checkbuild on internal-master
Change-Id: I2107ae65007a4995e4fa23371fefe4db7547f43b
This commit is contained in:
George Burgess IV 2019-09-24 11:46:22 -07:00
parent fd1ff4b2c8
commit 3aedee9828
3 changed files with 4 additions and 10 deletions
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6
libc/include/bits/fortify/string.h
View file

@ -46,7 +46,7 @@ __BIONIC_FORTIFY_INLINE
void* memcpy(void* const dst __pass_object_size0, const void* src, size_t copy_amount)
__overloadable {
size_t bos_dst = __bos0(dst);
if (__bos_trivially_not_lt(bos_dst, copy_amount)) {
if (__bos_trivially_ge(bos_dst, copy_amount)) {
return __builtin_memcpy(dst, src, copy_amount);
}
return __builtin___memcpy_chk(dst, src, copy_amount, bos_dst);
@ -56,7 +56,7 @@ void* memcpy(void* const dst __pass_object_size0, const void* src, size_t copy_a
__BIONIC_FORTIFY_INLINE
void* memmove(void* const dst __pass_object_size0, const void* src, size_t len) __overloadable {
size_t bos_dst = __bos0(dst);
if (__bos_trivially_not_lt(bos_dst, len)) {
if (__bos_trivially_ge(bos_dst, len)) {
return __builtin_memmove(dst, src, len);
}
return __builtin___memmove_chk(dst, src, len, bos_dst);
@ -71,7 +71,7 @@ void* mempcpy(void* const dst __pass_object_size0, const void* src, size_t copy_
__clang_error_if(__bos_unevaluated_lt(__bos0(dst), copy_amount),
"'mempcpy' called with size bigger than buffer") {
size_t bos_dst = __bos0(dst);
if (__bos_trivially_not_lt(bos_dst, copy_amount)) {
if (__bos_trivially_ge(bos_dst, copy_amount)) {
return __builtin_mempcpy(dst, src, copy_amount);
}
return __builtin___mempcpy_chk(dst, src, copy_amount, bos_dst);

2
libc/include/bits/fortify/unistd.h
View file

@ -76,7 +76,7 @@ char* getcwd(char* const __pass_object_size buf, size_t size)
#if __ANDROID_API__ >= __ANDROID_API_N__
size_t bos = __bos(buf);
if (!__bos_trivially_not_lt(bos, size)) {
if (!__bos_trivially_ge(bos, size)) {
return __getcwd_chk(buf, size, bos);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */

6
libc/include/sys/cdefs.h
View file

@ -305,14 +305,8 @@
__bos_dynamic_check_impl_and(bos_val, op, index, 1)
#define __bos_trivially_ge(bos_val, index) __bos_dynamic_check_impl((bos_val), >=, (index))
#define __bos_trivially_gt(bos_val, index) __bos_dynamic_check_impl((bos_val), >, (index))
/* The names here are meant to match nicely with the __bos_unevaluated macros above. */
#define __bos_trivially_not_lt __bos_trivially_ge
#define __bos_trivially_not_le __bos_trivially_gt
#if defined(__BIONIC_FORTIFY) || defined(__BIONIC_DECLARE_FORTIFY_HELPERS)
# define __BIONIC_INCLUDE_FORTIFY_HEADERS 1
#endif