[Cryptech-Commits] [sw/pkcs11] 01/03: Clean up a few gratuitous obscurities.

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sra at hactrn.net pushed a commit to branch master
in repository sw/pkcs11.

commit fb454260b582d418671e8a1ff45092e27709cd6d
Author: Rob Austein <sra at hactrn.net>
AuthorDate: Thu May 18 16:44:02 2017 -0400

    Clean up a few gratuitous obscurities.
---
 pkcs11.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/pkcs11.c b/pkcs11.c
index 148a1a6..fbc0845 100644
--- a/pkcs11.c
+++ b/pkcs11.c
@@ -593,14 +593,19 @@ static CK_RV posix_mutex_unlock(CK_VOID_PTR pMutex)
  * Bit mask twiddling utilities.
  */
 
+static inline CK_ULONG mask_pos(const CK_ULONG mask)
+{
+  return mask & ~(mask - 1);    /* Finds least significant bit set in mask */
+}
+
 static inline CK_ULONG mask_ldb(const CK_ULONG mask, const CK_ULONG value)
 {
-  return (value & mask) / (mask & ~(mask - 1));
+  return (value & mask) / mask_pos(mask);
 }
 
 static inline CK_ULONG mask_dpb(const CK_ULONG mask, const CK_ULONG value)
 {
-  return (value * (mask & ~(mask - 1))) & mask;
+  return (value * mask_pos(mask)) & mask;
 }
 
 /*
@@ -677,9 +682,6 @@ static inline unsigned handle_index(const CK_ULONG handle)
   return mask_ldb(HANDLE_MASK_INDEX, handle);
 }
 
-// Backwards compatability, probably phase this out
-#define is_token_handle(_handle_) (handle_flavor(_handle_) == handle_flavor_token_object)
-
 

 
 /*
@@ -1633,15 +1635,15 @@ static int p11_session_consistent_login(void)
 static int psnprintf(void *buffer_, size_t size, const char *format, ...)
 {
   char buffer[size + 1];
-  size_t i, n;
+  size_t n;
   va_list ap;
 
   va_start(ap, format);
-  i = n = vsnprintf(buffer, sizeof(buffer), format, ap);
+  n = vsnprintf(buffer, sizeof(buffer), format, ap);
   va_end(ap);
 
-  while (i < size)
-    buffer[i++] = ' ';
+  for (size_t i = n; i < size; i++)
+    buffer[i] = ' ';
 
   memcpy(buffer_, buffer, size);