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authorGreg McGary <greg@mcgary.org>2000-09-08 08:41:45 +0000
committerGreg McGary <greg@mcgary.org>2000-09-08 08:41:45 +0000
commite694422de52750c6a0469e1be89fbf97d3ff8bf2 (patch)
tree0b2bcd452740874ce1ad25a55cb42af0efe141a7 /sysdeps/generic/bp-checks.h
parent9b4a6eac68b7997e93f0d09bfe703b7c429a8fee (diff)
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* sysdeps/unix/sysv/linux/syscalls.list (mincore): Fix arg signature.
* sysdeps/unix/make-syscalls.sh: New signature keyletter `V'. 
* sysdeps/generic/bp-checks.h (CHECK_N_PAGES): New macro.
2000-09-08  Greg McGary  <greg@mcgary.org>

	* sysdeps/unix/sysv/linux/syscalls.list (mincore): Fix arg signature.
	* sysdeps/unix/make-syscalls.sh: New signature keyletter `V'.
	* sysdeps/generic/bp-checks.h (CHECK_N_PAGES): New macro.
Diffstat (limited to 'sysdeps/generic/bp-checks.h')
-rw-r--r--sysdeps/generic/bp-checks.h9
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__ */