1 files changed, 123 insertions, 0 deletions
diff --git a/klibc/include/stdio.h b/klibc/include/stdio.h
new file mode 100644
index 0000000000..e00fac4d5e
--- /dev/null
+++ b/klibc/include/stdio.h
@@ -0,0 +1,123 @@
+/*
+ * stdio.h
+ */
+
+#ifndef _STDIO_H
+#define _STDIO_H
+
+#include <klibc/extern.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <unistd.h>
+
+/* This structure doesn't really exist, but it gives us something
+   to define FILE * with */
+struct _IO_file;
+typedef struct _IO_file FILE;
+
+#ifndef EOF
+# define EOF (-1)
+#endif
+
+#ifndef BUFSIZ
+# define BUFSIZ 4096
+#endif
+
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
+
+/*
+ * Convert between a FILE * and a file descriptor.  We don't actually
+ * have any in-memory data, so we just abuse the pointer itself to
+ * hold the data.  Note, however, that for file descriptors, -1 is
+ * error and 0 is a valid value; for FILE *, NULL (0) is error and
+ * non-NULL are valid.
+ */
+static __inline__ int fileno(FILE *__f)
+{
+  /* This should really be intptr_t, but size_t should be the same size */
+  return (int)(size_t)__f - 1;
+}
+
+/* This is a macro so it can be used as initializer */
+#define __create_file(__fd) ((FILE *)(size_t)((__fd) + 1))
+
+#define stdin  __create_file(0)
+#define stdout __create_file(1)
+#define stderr __create_file(2)
+
+__extern FILE *fopen(const char *, const char *);
+
+static __inline__ FILE *fdopen(int __fd, const char *__m)
+{
+  (void)__m; return __create_file(__fd);
+}
+static __inline__ int fclose(FILE *__f)
+{
+  extern int close(int);
+  return close(fileno(__f));
+}
+static __inline__ int fseek(FILE *__f, off_t __o, int __w)
+{
+  extern off_t lseek(int, off_t, int);
+  return (lseek(fileno(__f), __o, __w) == (off_t)-1) ? -1 : 0;
+}
+static __inline__ off_t ftell(FILE *__f)
+{
+  extern off_t lseek(int, off_t, int);
+  return lseek(fileno(__f), 0, SEEK_CUR);
+}
+
+__extern int fputs(const char *, FILE *);
+__extern int puts(const char *);
+__extern int fputc(int, FILE *);
+#define putc(c,f)  fputc((c),(f))
+#define putchar(c) fputc((c),stdout)
+
+__extern int    fgetc(FILE *);
+__extern char * fgets(char *, int, FILE *);
+#define getc(f) fgetc(f)
+
+__extern size_t _fread(void *, size_t, FILE *);
+__extern size_t _fwrite(const void *, size_t, FILE *);
+
+#ifndef __NO_FREAD_FWRITE_INLINES
+extern __inline__ size_t
+fread(void *__p, size_t __s, size_t __n, FILE *__f)
+{
+  return _fread(__p, __s*__n, __f)/__s;
+}
+
+extern __inline__ size_t
+fwrite(void *__p, size_t __s, size_t __n, FILE *__f)
+{
+  return _fwrite(__p, __s*__n, __f)/__s;
+}
+#endif
+
+__extern int printf(const char *, ...);
+__extern int vprintf(const char *, va_list);
+__extern int fprintf(FILE *, const char *, ...);
+__extern int vfprintf(FILE *, const char *, va_list);
+__extern int sprintf(char *, const char *, ...);
+__extern int vsprintf(char *, const char *, va_list);
+__extern int snprintf(char *, size_t n, const char *, ...);
+__extern int vsnprintf(char *, size_t n, const char *, va_list);
+
+/* No buffering, so no flushing needed */
+extern __inline__ int
+fflush(FILE *__f)
+{
+  (void)__f;
+  return 0;
+}
+
+__extern int sscanf(const char *, const char *, ...);
+__extern int vsscanf(const char *, const char *, va_list);
+
+__extern void perror(const char *);
+
+__extern int rename(const char *, const char *);
+
+#endif /* _STDIO_H */