diff --git a/include/lib/libc/stdio.h b/include/lib/libc/stdio.h
index 2e234ba..83fd18c 100644
--- a/include/lib/libc/stdio.h
+++ b/include/lib/libc/stdio.h
@@ -8,130 +8,28 @@
  * All rights reserved.
  */
 
-#ifndef _STDIO_H
-#define _STDIO_H
+#ifndef STDIO_H
+#define STDIO_H
 
 #include <stdio_.h>
 
-#ifndef FOPEN_MAX
-#define FOPEN_MAX 12
-#endif
-
 #ifndef NULL
 #define NULL ((void *) 0)
 #endif
 
 #define EOF            -1
-#define SEEK_CUR        0
-#define SEEK_END        1
-#define SEEK_SET        2
 
+int printf(const char *fmt, ...);
+int snprintf(char *s, size_t n, const char *fmt, ...);
+int sprintf(char *s, const char *fmt, ...);
+int sscanf(const char *s, const char *fmt, ...);
 
-#define _IOWRITE        (1 << 0)
-#define _IOREAD         (1 << 1)
-#define _IORW           (1 << 2)
-#define _IOEOF          (1 << 3)
-#define _IOERR          (1 << 4)
-#define _IOSTRG         (1 << 5)
-#define _IOTXT          (1 << 6)
-#define _IOFBF          (1 << 7)
-#define _IOLBF          (1 << 8)
-#define _IONBF          (1 << 9)
-#define _IOALLOC        (1 <<10)
-
-typedef struct {
-	int fd;        	        /* file descriptor */
-	unsigned char *buf;     /* pointer to i/o buffer */
-	unsigned char *rp;      /* read pointer */
-	unsigned char *wp;      /* write pointer */
-	unsigned char *lp;      /* write pointer used when line-buffering */
-	size_t len;             /* actual length of buffer */
-	unsigned short flags;
-	unsigned char unbuf[1];  /* tiny buffer for unbuffered io */
-} FILE;
-
-extern FILE __iob[FOPEN_MAX];
-
-#define	stdin	(&__iob[0])
-#define	stdout	(&__iob[1])
-#define	stderr	(&__iob[2])
-
-extern int remove(const char *filename);
-extern int rename(const char *old, const char *new);
-extern FILE *tmpfile(void);
-extern char *tmpnam(char *s);
-extern int fclose(FILE *fp);
-extern int fflush(FILE *fp);
-extern FILE *fopen(const char * restrict fname, const char * restrict mode);
-extern FILE *freopen(const char * restrict fname, const char * restrict mode,
-                     FILE * restrict fp);
-extern void setbuf(FILE * restrict fp, char * restrict buf);
-extern int setvbuf(FILE * restrict fp,
-                   char * restrict buf, int mode, size_t size);
-extern int fprintf(FILE * restrict fp, const char * restrict fmt, ...);
-extern int fscanf(FILE * restrict fp, const char * restrict fmt, ...);
-extern int printf(const char * restrict fmt, ...);
-extern int scanf(const char * restrict fmt, ...);
-extern int snprintf(char * restrict s,
-                    size_t n, const char * restrict fmt, ...);
-extern int sprintf(char * restrict s, const char * restrict fmt, ...);
-extern int sscanf(const char * restrict s, const char * restrict fmt, ...);
-
-#ifdef _STDARG_H
-extern int vfprintf(FILE * restrict fp,
-                    const char * restrict fmt, va_list arg);
-extern int vfscanf(FILE * restrict fp,
-                   const char * restrict fmt, va_list arg);
-extern int vprintf(const char * restrict fmt, va_list arg);
-extern int vscanf(const char * restrict fmt, va_list arg);
-extern int vsnprintf(char * restrict s, size_t n, const char * restrict fmt,
-                     va_list arg);
-extern int vsprintf(char * restrict s,
-                    const char * restrict fmt, va_list arg);
-extern int vsscanf(const char * restrict s,
-                   const char * restrict fmt, va_list arg);
+#ifdef STDARG_H
+int vsnprintf(char *s, size_t n, const char *fmt, va_list arg);
+int vsprintf(char *s, const char *fmt, va_list arg);
 #endif
 
-extern int fgetc(FILE *fp);
-extern char *fgets(char * restrict s, int n, FILE * restrict fp);
-extern int fputc(int c, FILE *fp);
-extern int fputs(const char * restrict s, FILE * restrict fp);
-extern int getc(FILE *fp);
-extern int getchar(void);
-extern char *gets(char *s);
-extern int putc(int c, FILE *fp);
-extern int putchar(int c);
-extern int puts(const char *s);
-extern int ungetc(int c, FILE *fp);
-extern size_t fread(void * restrict ptr, size_t size, size_t nmemb,
-             FILE * restrict fp);
-extern size_t fwrite(const void * restrict ptr, size_t size, size_t nmemb,
-              FILE * restrict fp);
-extern int fgetpos(FILE * restrict fp, fpos_t * restrict pos);
-extern int fseek(FILE *fp, long int offset, int whence);
-extern int fsetpos(FILE *fp, const fpos_t *pos);
-extern long int ftell(FILE *fp);
-extern void rewind(FILE *fp);
-extern void clearerr(FILE *fp);
-extern int feof(FILE *fp);
-extern int ferror(FILE *fp);
-extern void perror(const char *s);
+int putchar(int c);
+int puts(const char *s);
 
-extern int __getc(FILE *fp);
-extern int __putc(int, FILE *fp);
-
-#ifdef __USE_MACROS
-#ifdef __UNIX_FILES
-#define getc(fp)     ((fp)->rp >= (fp)->wp ?  __getc(fp) : *(fp)->rp++)
-#define putc(c, fp)  ((fp)->wp >= (fp)->rp ? __putc(c,fp) : (*(fp)->wp++ = c))
-#endif
-
-#define ferror(fp)          ((fp)->flags & _IOERR)
-#define feof(fp)            ((fp)->flags & _IOEOF)
-#define clearerr(fp)        (void) ((fp)->flags &= ~(_IOERR|_IOEOF))
-#define getchar()           getc(stdin)
-#define putchar(c)          putc((c), stdout)
-#define setbuf(fp, b)       (void) setvbuf(fp, b, b ? _IOFBF:_IONBF, BUFSIZ)
-#endif
-
-#endif
+#endif /* STDIO_H */