diff options
Diffstat (limited to 'sysdeps/generic/bp-checks.h')
| -rw-r--r-- | sysdeps/generic/bp-checks.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/generic/bp-checks.h b/sysdeps/generic/bp-checks.h index 01acf9f4ae..41ffad71e1 100644 --- a/sysdeps/generic/bp-checks.h +++ b/sysdeps/generic/bp-checks.h @@ -90,6 +90,14 @@ extern void *__unbounded __ubp_memchr (const void *__unbounded, int, unsigned); (((CMD) == F_GETLK || (CMD) == F_SETLK || (CMD) == F_SETLKW) \ ? CHECK_1 ((struct flock *) ARG) : (unsigned long) (ARG)) +/* Check bounds of an array of mincore residency-status flags that + cover a region of NBYTES. Such a vector occupies one byte per page + of memory. */ +# define CHECK_N_PAGES(ARG, NBYTES) \ + ({ int _page_size_ = sysconf (_SC_PAGE_SIZE); \ + CHECK_N ((const char *) (ARG), \ + ((NBYTES) + _page_size_ - 1) / _page_size_); }) + /* Return a bounded pointer with value PTR that satisfies CHECK_N (PTR, N). */ # define BOUNDED_N(PTR, N) \ ({ __typeof (PTR) __bounded _p_; \ @@ -113,6 +121,7 @@ extern void *__unbounded __ubp_memchr (const void *__unbounded, int, unsigned); # define CHECK_SIGSET_NULL_OK(SET) (SET) # define CHECK_IOCTL(ARG, CMD) (ARG) # define CHECK_FCNTL(ARG, CMD) (ARG) +# define CHECK_N_PAGES(ARG, NBYTES) (ARG) # define BOUNDED_N(PTR, N) (PTR) #endif /* !__BOUNDED_POINTERS__ */ |