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/* $Id$
*
* Declarations of routines and variables in the C library. Including this
* file is the equivalent of including all of the following headers, portably:
*
* #include <sys/types.h>
* #include <stdarg.h>
* #include <stdbool.h>
* #include <stdio.h>
* #include <stdlib.h>
* #include <stddef.h>
* #include <stdint.h>
* #include <string.h>
* #include <unistd.h>
*
* Missing functions are provided via #define or prototyped if available.
* Also provides some standard #defines.
*
* Written by Russ Allbery <rra@stanford.edu>
* This work is hereby placed in the public domain by its author.
*/
#ifndef PORTABLE_SYSTEM_H
#define PORTABLE_SYSTEM_H 1
/* Make sure we have our configuration information. */
#include <config.h>
/* BEGIN_DECL and __attribute__. */
#include <portable/macros.h>
/* A set of standard ANSI C headers. We don't care about pre-ANSI systems. */
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if HAVE_STDINT_H
# include <stdint.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
/* SCO OpenServer gets int32_t from here. */
#if HAVE_SYS_BITYPES_H
# include <sys/bitypes.h>
#endif
/* Get the bool type. */
#include <portable/stdbool.h>
BEGIN_DECLS
/*
* Provide prototypes for functions not declared in system headers. Use the
* HAVE_DECL macros for those functions that may be prototyped but
* implemented incorrectly or implemented without a prototype.
*/
#if !HAVE_ASPRINTF
extern int asprintf(char **, const char *, ...);
extern int vasprintf(char **, const char *, va_list);
#endif
#if !HAVE_DECL_SNPRINTF
extern int snprintf(char *, size_t, const char *, ...)
__attribute__((__format__(printf, 3, 4)));
#endif
#if !HAVE_DECL_VSNPRINTF
extern int vsnprintf(char *, size_t, const char *, va_list);
#endif
#if !HAVE_STRLCAT
extern size_t strlcat(char *, const char *, size_t);
#endif
#if !HAVE_STRLCPY
extern size_t strlcpy(char *, const char *, size_t);
#endif
END_DECLS
/* Windows provides snprintf under a different name. */
#ifdef _WIN32
# define snprintf _snprintf
#endif
/*
* POSIX requires that these be defined in <unistd.h>. If one of them has
* been defined, all the rest almost certainly have.
*/
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
# define STDOUT_FILENO 1
# define STDERR_FILENO 2
#endif
/*
* C99 requires va_copy. Older versions of GCC provide __va_copy. Per the
* Autoconf manual, memcpy is a generally portable fallback.
*/
#ifndef va_copy
# ifdef __va_copy
# define va_copy(d, s) __va_copy((d), (s))
# else
# define va_copy(d, s) memcpy(&(d), &(s), sizeof(va_list))
# endif
#endif
#endif /* !PORTABLE_SYSTEM_H */
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