Wrote a new stdio.h, Implemented fcntl.h

libc/include/fcntl.h

@@ -0,0 +1,18 @@
+#ifndef _FCNTL_H
+#define _FCNTL_H
+
+/* File access modes */
+#define O_CREAT     0x0001  // Create if does not exist
+#define O_RDONLY    0x0002  // Read only
+#define O_WRONLY    0x0004  // Write only
+#define O_RDWR      0x0008  // Read and write
+#define O_APPEND    0x0010  // Always writes at the end (appends)
+#define O_TRUNC     0x0020  // Truncate file size and position to 0 on Open
+#define O_EXCL      0x0040  // Error if file exists (with O_CREAT)
+#define O_BIN       0x0080  // Read bytes, not text
+#define O_DIRECTORY 0x0100  // Error if file is not a directory
+// TODO: more!
+
+/* TODO: File lock */
+
+#endif

libc/include/stdio.h

@@ -2,8 +2,27 @@
 #define _STDIO_H
 
 #include <stddef.h>
+#include <stdarg.h>
 
-// Nobody should have to interface with the internals of this structure
+// End Of File
+#define EOF (-1)
+
+// File related macros
+#define BUFSIZ          512
+#define FILENAME_MAX    255
+#define FOPEN_MAX       32
+
+// Seek positions
+#define SEEK_CUR    0
+#define SEEK_END    1
+#define SEEK_SET    2
+
+// Standard file pointers
+#define STDIN_FILENO    0
+#define STDOUT_FILENO   1
+#define STDERR_FILENO   2
+
+/* The ultimate FILE struct */
 typedef struct _iobuf { // 24B
     unsigned char*  _ptr;       // File buffer base
     unsigned int    _size;      // Size of buffer
@@ -14,28 +33,52 @@ typedef struct _iobuf { // 24B
     char            __reserved[6];
 } FILE;
 
-// Standard file pointers
 extern FILE* stdin;
 extern FILE* stdout;
 extern FILE* stderr;
 
-/* File IO */
-FILE* fopen(const char* filename, const char* mode);
+/* File operations */
+FILE* fopen(const char* path, const char* mode);
 int fclose(FILE* stream);
 size_t fread(void* ptr, size_t size, size_t count, FILE* stream);
-size_t fwrite(const void* ptr, size_t size, size_t count, FILE* stream);
-int fseek(FILE* stream, long int origin, int offset);
-long int ftell(FILE* stream);
+size_t fwrite(void* ptr, size_t size, size_t count, FILE* stream);
+int fseek(FILE* stream, long offset, int whence);
+long ftell(FILE* stream);
+void rewind(FILE* stream);
+int fflush(FILE* stream);
 
-/* Terminal IO */
+/* Character I/O */
+int getchar(void);
+int putchar(int c);
+int getc(FILE* stream);
+int putc(int c, FILE* stream);
+int ungetc(int c, FILE* stream);
+
+/* Line I/O */
+char* fgets(char* str, int n, FILE* stream);
+int fputs(const char* str, FILE* stream);
+int puts(const char* str);
+
+/* Error handling */
+void perror(const char* s);
+int feof(FILE* stream);
+int ferror(FILE* stream);
+void clearerr(FILE* stream);
+
+/* Formatted I/O */
 int printf(const char* fmt, ...);
-int sprintf(char* str, const char* fmt, ...);
-int snprintf(char* str, size_t n, const char* fmt, ...);
+int vprintf(const char* fmt, va_list va);
 int fprintf(FILE* stream, const char* fmt, ...);
-void putc(char c);
-char getc();
-void print(const char* str);
-void clear();
-void reads(char* str);
+int vfprintf(FILE* stream, const char* fmt, va_list va);
+// INFO: (v)sprinf() Has been depricated and removed as it is unsafe (potencial buffer overflow). Please use (v)snprintf()
+int snprintf(char* str, size_t size, const char* fmt, ...);
+int vsnprintf(char* str, size_t size, const char* fmt, va_list va);
+
+int scanf(const char* fmt, ...);
+int vscanf(const char* fmt, va_list va);
+int fscanf(FILE* stream, const char* fmt, ...);
+int vfscanf(FILE* stream, const char* fmt, va_list va);
+int sscanf(const char* str, const char* fmt, ...);
+int vsscanf(const char* str, const char* fmt, va_list va);
 
 #endif