From: Lubomir I. Ivanov <neolit123@gmail.com>
Date: Fri, 24 Aug 2012 22:39:00 +0000 (+0300)
Subject: file.c: open a file in binary mode in readfile()
X-Git-Url: http://git.tdb.fi/?p=ext%2Fsubsurface.git;a=commitdiff_plain;h=642c83f5327317780a0f10b3ab46f6c1bd8bb202

file.c: open a file in binary mode in readfile()

O_TEXT is the default mode for fctrl's open() and on windows created
files, line endings are counted by fstat() as CR+LF adding an extra
byte for each line. the result from this is that, while the file still
can be read into a buffer, the read() return (ret) has a different
size compared to the previously allocated buffer, breaking at:

	if (ret == mem->size)

a solution is to open() the file in O_BINARY mode, which should
technically suppress the EOL translation.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
[ Fixed to work under real operating systems that don't need this crap.
  "Here's a nickel, kid, go and buy a real OS".  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/file.c b/file.c
index e016390..da49899 100644
--- a/file.c
+++ b/file.c
@@ -8,6 +8,11 @@
 #include "dive.h"
 #include "file.h"
 
+/* Crazy windows sh*t */
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
 static int readfile(const char *filename, struct memblock *mem)
 {
 	int ret, fd;
@@ -17,7 +22,7 @@ static int readfile(const char *filename, struct memblock *mem)
 	mem->buffer = NULL;
 	mem->size = 0;
 
-	fd = open(filename, O_RDONLY);
+	fd = open(filename, O_RDONLY | O_BINARY);
 	if (fd < 0)
 		return fd;
 	ret = fstat(fd, &st);