From 8693ae1bd880a758eb2efec4fccd32f89593855d Mon Sep 17 00:00:00 2001
From: Nebuleon Fumika
Date: Sun, 3 Feb 2013 04:19:11 -0500
Subject: Add SDK modifications by BassAceGold as of 2011-04-14, as well as
 modified DMA functions as of 2013-01-29.

---
 sdk-modifications/libsrc/fs/ds2_fcntl.c | 126 ++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 sdk-modifications/libsrc/fs/ds2_fcntl.c

(limited to 'sdk-modifications/libsrc/fs/ds2_fcntl.c')

diff --git a/sdk-modifications/libsrc/fs/ds2_fcntl.c b/sdk-modifications/libsrc/fs/ds2_fcntl.c
new file mode 100644
index 0000000..0fc00d7
--- /dev/null
+++ b/sdk-modifications/libsrc/fs/ds2_fcntl.c
@@ -0,0 +1,126 @@
+#include <stdarg.h>
+#include <errno.h>
+#include "ds2_fcntl.h"
+#include "fs_api.h"
+#include "ds2_malloc.h"
+
+
+/*typedef struct {
+	FILE_STRUCT* stream;
+	int   flags;
+} _fd_t;
+
+_fd_t* _fd_list  = NULL;
+int    _fd_count = 0;*/
+
+int open(const char* path, int oflag, ... ) {
+	if(oflag & _O_UNSUPPORTED) {
+		errno = EINVAL;
+		return -1;
+	}
+	// TODO - Deal more correctly with certain flags.
+	FILE_STRUCT* tempFile = fat_fopen(path, "rb");
+	if(oflag & O_CREAT) {
+		if(tempFile == NULL)
+			tempFile = fat_fopen(path, "wb");
+		if(tempFile == NULL)
+			return -1;
+	} else if(tempFile == NULL) {
+		return -1;
+	} else if(oflag & O_TRUNC) {
+		tempFile = fat_fopen(path, "wb");
+		if(tempFile == NULL)
+			return -1;
+	}
+	fat_fclose(tempFile);
+
+	char tempMode[16];
+	if((oflag & 0x3) == O_RDONLY) {
+		sprintf(tempMode, "rb");
+	} else if((oflag & 0x3) == O_WRONLY) {
+		if(oflag & O_APPEND)
+			sprintf(tempMode, "ab");
+		else
+			sprintf(tempMode, "wb");
+	} else if((oflag & 0x3) == O_RDWR) {
+		if(oflag & O_APPEND)
+			sprintf(tempMode, "ab+");
+		else
+			sprintf(tempMode, "rb+");
+	}
+
+	tempFile = fat_fopen(path, tempMode);
+	if(tempFile == NULL)
+		return -1;
+		
+	return tempFile -> fd;
+}
+
+int fcntl(int fildes, int cmd, ...) {
+	/*if((fildes < 0) || (fildes >= _fd_count) || (_fd_list[fildes].stream == NULL)) {
+		errno = EINVAL;
+		return -1;
+	}
+	if((cmd <= 0) || (cmd > _F_LAST)) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	va_list ap;
+
+	int   arg;
+	void* flock;
+	switch(cmd) {
+		case F_SETFD:
+		case F_SETOWN:
+			va_start(ap, cmd);
+			arg = va_arg(ap, int);
+			va_end(ap);
+			break;
+		case F_GETLK:
+		case F_SETLK:
+			va_start(ap, cmd);
+			flock = va_arg(ap, void*);
+			va_end(ap);
+			break;
+	}
+
+	switch(cmd) {
+		case F_DUPFD: // Duplicate file descriptors not supported.
+			errno = EINVAL;
+			return -1;
+		case F_GETFD:
+			return (_fd_list[fildes].flags & _F_FILE_DESC);
+		case F_SETFD:
+			arg &= _F_FILE_DESC;
+			_fd_list[fildes].flags &= ~_F_FILE_DESC;
+			_fd_list[fildes].flags |= arg;
+			return 0;
+		case F_GETFL:
+			return (_fd_list[fildes].flags & (O_ACCMODE | _O_FILE_STATUS));
+		case F_SETFL:
+			arg &= (O_ACCMODE | _O_FILE_STATUS);
+			if(arg & _O_UNSUPPORTED) {
+				errno = EINVAL;
+				return -1;
+			}
+			if((arg & O_ACCMODE) != (_fd_list[fildes].flags & O_ACCMODE)) {
+				errno = EINVAL;
+				return -1;
+			}
+			_fd_list[fildes].flags &= ~(O_ACCMODE | _O_FILE_STATUS);
+			_fd_list[fildes].flags |= arg;
+			return 0;
+		case F_GETOWN:
+		case F_SETOWN:
+			errno = -1;
+			return -1;
+		case F_GETLK:
+		case F_SETLK:
+		case F_SETLKW:
+			return -1;
+	}
+
+	errno = EINVAL;*/
+	return -1;
+}
-- 
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