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cc65/libsrc/apple2/rewinddir.c
cuz feae688346 Oliver Schmidt updated the graphics drivers and part of the C library for the
Apple machines.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3816 b7a2c559-68d2-44c3-8de9-860c34a00d81
2008-03-16 09:37:22 +00:00

70 lines
3.1 KiB
C

/*****************************************************************************/
/* */
/* rewinddir.c */
/* */
/* Reset directory stream */
/* */
/* */
/* */
/* (C) 2005 Oliver Schmidt, <ol.sc@web.de> */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <dir.h>
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void __fastcall__ rewinddir (register DIR* dir)
{
/* Rewind directory file */
if (lseek (dir->fd, 0, SEEK_SET)) {
/* Read directory key block */
if (read (dir->fd,
dir->block.bytes,
sizeof (dir->block)) == sizeof (dir->block)) {
/* Skip directory header entry */
dir->current_entry = 1;
/* Return success */
return;
}
}
/* Assert that no subsequent readdir() finds an active entry */
memset (dir->block.bytes, 0, sizeof (dir->block));
/* Return failure */
}