pptpd/compat.h

/*
 * compat.h
 *
 * Compatibility functions for different OSes (prototypes)
 */

#ifndef _PPTPD_COMPAT_H
#define _PPTPD_COMPAT_H

#if HAVE_CONFIG_H
#include "config.h"
#endif

#if HAVE_SETSID
#define SETSIDPGRP setsid
#else
#define SETSIDPGRP setpgrp
#endif

#include <sys/types.h>

#ifndef HAVE_STRLCPY
/* void since to be fast and portable, we use strncpy, but this
 * means we don't know how many bytes were copied
 */
extern void strlcpy(char *dst, const char *src, size_t size);
#endif  /* !HAVE_STRLCPY */

#ifndef HAVE_MEMMOVE
extern void *memmove(void *dst, const void *src, size_t size);
#endif  /* !HAVE_MEMMOVE */

#ifndef HAVE_OPENPTY
/* Originally from code by C. S. Ananian */

/* These are the Linux values - and fairly sane defaults.
 * Since we search from the start and just skip errors, they'll do.
 * Note that Unix98 has an openpty() call so we don't need to worry
 * about the new pty names here.
 */
#define PTYDEV          "/dev/ptyxx"
#define TTYDEV          "/dev/ttyxx"
#define PTYMAX          11
#define TTYMAX          11
#define PTYCHAR1        "pqrstuvwxyzabcde"
#define PTYCHAR2        "0123456789abcdef"

/* Dummy the last 2 args, so we don't have to find the right include
 * files on every OS to define the needed structures.
 */
extern int openpty(int *, int *, char *, void *, void *);
#endif  /* !HAVE_OPENPTY */

#ifndef HAVE_STRERROR
extern char *strerror(int);
#endif

extern void my_setproctitle(int argc, char **argv, const char *format, ...)
       __attribute__ ((format (printf, 3, 4)));

/* signal to pipe delivery implementation */

/* create a signal pipe, returns 0 for success, -1 with errno for failure */
int sigpipe_create();

/* generic handler for signals, writes signal number to pipe */
void sigpipe_handler(int signum);

/* assign a signal number to the pipe */
void sigpipe_assign(int signum);

/* return the signal pipe read file descriptor for select(2) */
int sigpipe_fd();

/* read and return the pending signal from the pipe */
int sigpipe_read();

void sigpipe_close();

#endif  /* !_PPTPD_COMPAT_H */