digests, copy-file: increase the IO buffer size from 4KiB to 32KiB

[gnulib.git] / lib / sha1.c

diff --git a/lib/sha1.c b/lib/sha1.c
index 9c6c7ae..e72c94d 100644 (file)
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -28,6 +28,7 @@
 #include "sha1.h"
 
 #include <stddef.h>
+#include <stdlib.h>
 #include <string.h>
 
 #if USE_UNLOCKED_IO
@@ -41,7 +42,7 @@
     (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
 #endif
 
-#define BLOCKSIZE 4096
+#define BLOCKSIZE 32768
 #if BLOCKSIZE % 64 != 0
 # error "invalid BLOCKSIZE"
 #endif
@@ -124,9 +125,12 @@ int
 sha1_stream (FILE *stream, void *resblock)
 {
   struct sha1_ctx ctx;
-  char buffer[BLOCKSIZE + 72];
   size_t sum;
 
+  char *buffer = malloc (BLOCKSIZE + 72);
+  if (!buffer)
+    return 1;
+
   /* Initialize the computation context.  */
   sha1_init_ctx (&ctx);
 
@@ -155,7 +159,10 @@ sha1_stream (FILE *stream, void *resblock)
                 exit the loop after a partial read due to e.g., EAGAIN
                 or EWOULDBLOCK.  */
              if (ferror (stream))
-               return 1;
+               {
+                 free (buffer);
+                 return 1;
+               }
              goto process_partial_block;
            }
 
@@ -180,6 +187,7 @@ sha1_stream (FILE *stream, void *resblock)
 
   /* Construct result in desired memory.  */
   sha1_finish_ctx (&ctx, resblock);
+  free (buffer);
   return 0;
 }