Commit e84c2d26 authored by Bodo Möller's avatar Bodo Möller
Browse files

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?)
parent fabce041

crypto/rand/randfile.c

+8 −14
Original line number Diff line number Diff line
@@ -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)

			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: