X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fwfopen.c;h=76dc8b82a0312b31d16e38e5727e527aad0a30c7;hb=3e7ecb179b193bf17323c975890eed1d025f7e4c;hp=ac365c2a0093869fff0f4695ea07a8601fef13be;hpb=defc1ea34074e7882724c460260d307cdf981a70;p=oweals%2Fbusybox.git

diff --git a/libbb/wfopen.c b/libbb/wfopen.c
index ac365c2a0..76dc8b82a 100644
--- a/libbb/wfopen.c
+++ b/libbb/wfopen.c
@@ -4,7 +4,7 @@
  *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
 #include "libbb.h"
@@ -14,7 +14,43 @@ FILE* FAST_FUNC fopen_or_warn(const char *path, const char *mode)
 	FILE *fp = fopen(path, mode);
 	if (!fp) {
 		bb_simple_perror_msg(path);
-		errno = 0;
+		//errno = 0; /* why? */
 	}
 	return fp;
 }
+
+FILE* FAST_FUNC fopen_for_read(const char *path)
+{
+	return fopen(path, "r");
+}
+
+FILE* FAST_FUNC xfopen_for_read(const char *path)
+{
+	return xfopen(path, "r");
+}
+
+FILE* FAST_FUNC fopen_for_write(const char *path)
+{
+	return fopen(path, "w");
+}
+
+FILE* FAST_FUNC xfopen_for_write(const char *path)
+{
+	return xfopen(path, "w");
+}
+
+static FILE* xfdopen_helper(unsigned fd_and_rw_bit)
+{
+	FILE* fp = fdopen(fd_and_rw_bit >> 1, fd_and_rw_bit & 1 ? "w" : "r");
+	if (!fp)
+		bb_error_msg_and_die(bb_msg_memory_exhausted);
+	return fp;
+}
+FILE* FAST_FUNC xfdopen_for_read(int fd)
+{
+	return xfdopen_helper(fd << 1);
+}
+FILE* FAST_FUNC xfdopen_for_write(int fd)
+{
+	return xfdopen_helper((fd << 1) + 1);
+}