X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fcopyfd.c;h=22d8c3996831510739facc567275f37ed89693fc;hb=09adaca37d6bd67745c1c81c598ba25006f990b4;hp=253a8cf6e0d7e58b5147d8aff4ba9137d0c9f466;hpb=55f9872616f0c42f3fb712cfb7f9d0bb52c8afcb;p=oweals%2Fbusybox.git

diff --git a/libbb/copyfd.c b/libbb/copyfd.c
index 253a8cf6e..22d8c3996 100644
--- a/libbb/copyfd.c
+++ b/libbb/copyfd.c
@@ -2,7 +2,7 @@
 /*
  * Utility routines.
  *
- * Copyright (C) 1999-2001 Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,36 +25,28 @@
 #include "libbb.h"
 
 
-extern size_t copyfd(int fd1, int fd2)
+extern int copyfd(int fd1, int fd2)
 {
-	char buf[32768], *writebuf;
-	int status = TRUE;
-	size_t totalread = 0, bytesread, byteswritten;
+	char buf[8192];
+	ssize_t nread, nwrote;
 
-	while(status) {
-		bytesread = read(fd1, &buf, sizeof(buf));
-		if(bytesread == -1) {
-			error_msg("read: %s", strerror(errno));
-			status = FALSE;
+	while (1) {
+		nread = safe_read(fd1, buf, sizeof(buf));
+		if (nread == 0)
 			break;
+		if (nread == -1) {
+			perror_msg("read");
+			return -1;
 		}
-		byteswritten = 0;
-		writebuf = buf;
-		while(bytesread) {
-			byteswritten = write( fd2, &writebuf, bytesread );
-			if(byteswritten == -1) {
-				error_msg("write: %s", strerror(errno));
-				status = FALSE;
-				break;
-			}
-			bytesread -= byteswritten;
-			writebuf += byteswritten;
+
+		nwrote = full_write(fd2, buf, nread);
+		if (nwrote == -1) {
+			perror_msg("write");
+			return -1;
 		}
 	}
-	if ( status == TRUE )
-		return totalread;
-	else
-		return -1;
+
+	return 0;
 }
 
 /* END CODE */