From: Bodo Möller <bodo@openssl.org>
Date: Sun, 23 Jan 2000 19:58:03 +0000 (+0000)
Subject: As ftruncate is not availabe on all platforms, switch back to
X-Git-Tag: OpenSSL_0_9_5beta1~212
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=e84c2d267950e9f7c2a210edfee783be84dd83b4

As ftruncate is not availabe on all platforms, switch back to
opening the output file with "wb" to truncate it except on VMS
(where the file now keeps its original length because it is opened
with "rb+" -- does VMS have ftruncate?)
---

diff --git a/crypto/rand/randfile.c b/crypto/rand/randfile.c
index e9721f66c2..1882d7df2c 100644
--- a/crypto/rand/randfile.c
+++ b/crypto/rand/randfile.c
@@ -121,27 +121,23 @@ int RAND_write_file(const char *file)
 	FILE *out = NULL;
 	int n;
 
+#ifdef VMS
 	/* Under VMS, fopen(file, "wb") will create a new version of the
 	   same file.  This is not good, so let's try updating an existing
-	   one, and create file only if it doesn't already exist.  This
-	   should be completely harmless on system that have no file
-	   versions.					-- Richard Levitte */
+	   one, and create file only if it doesn't already exist. */
 	out=fopen(file,"rb+");
-	if (out == NULL
-#ifdef ENOENT
-	    && errno == ENOENT
+	if (out == NULL && errno != ENOENT)
+		goto err;
 #endif
-	   )
+
+	if (out == NULL)
 		{
-		errno = 0;
 #if defined O_CREAT && defined O_EXCL
 		/* chmod(..., 0600) is too late to protect the file,
 		 * permissions should be restrictive from the start */
-		{
-		    int fd = open(file, O_CREAT | O_EXCL, 0600);
-		    if (fd != -1)
+		int fd = open(file, O_CREAT | O_EXCL, 0600);
+		if (fd != -1)
 			out = fdopen(fd, "wb");
-		}
 #else		
 		out=fopen(file,"wb");
 #endif
@@ -166,8 +162,6 @@ int RAND_write_file(const char *file)
 		ret+=i;
 		if (n <= 0) break;
 		}
-	if (ret > 0)
-		ftruncate(fileno(out), ret);
 	fclose(out);
 	memset(buf,0,BUFSIZE);
 err: