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[Sanitizer] capsicum variadic api subset

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Reviewers: markj, vitalybuka

Reviewed By: markj

Differential Revision: https://reviews.llvm.org/D55714

llvm-svn: 349392
This commit is contained in:
David Carlier 2018-12-17 20:57:06 +00:00
parent 5852aa44ae
commit 34144f5ec0
2 changed files with 78 additions and 0 deletions
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72
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
View File

@ -7844,6 +7844,74 @@ INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base,
#endif
#if SANITIZER_INTERCEPT_CAPSICUM
#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \
if (rights) \
COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
__sanitizer_cap_rights_t *ret = \
REAL(cap_rights_init)(rights, ##__VA_ARGS__); \
if (ret) \
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
return ret; \
}
#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \
if (rights) \
COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
__sanitizer_cap_rights_t *ret = \
REAL(cap_rights_set)(rights, ##__VA_ARGS__); \
if (ret) \
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
return ret; \
}
#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \
if (rights) \
COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
__sanitizer_cap_rights_t *ret = \
REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \
if (ret) \
COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
return ret; \
}
#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \
{ \
void *ctx; \
COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \
if (rights) \
COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \
}
INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init,
__sanitizer_cap_rights_t *rights) {
CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights);
}
INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set,
__sanitizer_cap_rights_t *rights) {
CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights);
}
INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear,
__sanitizer_cap_rights_t *rights) {
CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights);
}
INTERCEPTOR(bool, cap_rights_is_set,
__sanitizer_cap_rights_t *rights) {
CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights);
}
INTERCEPTOR(int, cap_rights_limit, int fd,
const __sanitizer_cap_rights_t *rights) {
void *ctx;
@ -7932,6 +8000,10 @@ INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) {
return ret;
}
#define INIT_CAPSICUM \
COMMON_INTERCEPT_FUNCTION(cap_rights_init); \
COMMON_INTERCEPT_FUNCTION(cap_rights_set); \
COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \
COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \
COMMON_INTERCEPT_FUNCTION(cap_rights_get); \
COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \
COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \

6
compiler-rt/test/sanitizer_common/TestCases/FreeBSD/capsicum.cc
View File

@ -49,6 +49,12 @@ void test_cap_rights() {
rv = cap_rights_get(STDIN_FILENO, &grights);
assert(rv == 0);
assert(memcmp(&grights, &rights, sizeof(grights)) == 0);
cap_rights_t *iptr = cap_rights_set(&rights, CAP_IOCTL);
assert(iptr);
cap_rights_t *eptr = cap_rights_clear(&rights, CAP_READ);
assert(eptr);
hasit = cap_rights_is_set(&rights, CAP_IOCTL);
assert(hasit == true);
printf("rights test: %d\n", rv);
}