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/* util.h ....... error message utilities.
* C. Scott Ananian <cananian@alumni.princeton.edu>
*
* $Id: util.h,v 1.6 2005/03/10 01:18:20 quozl Exp $
*/
#ifndef INC_UTIL_H
#define INC_UTIL_H
/* log_string is an identifier for this pptp process, passed from
command line using --log-string=X, and included with every log message.
Useful for people with multiple pptp sessions open at a time */
extern char * log_string;
/* log_level sets the logging verbosity. Values range from 0 (errors only)
to 1 (errors and warnings) to 2 (high verbosity, for debugging) */
extern int log_level;
void _log(const char *func, const char *file, int line, const char *format, ...)
__attribute__ ((format (printf, 4, 5)));
void _warn(const char *func, const char *file, int line, const char *format, ...)
__attribute__ ((format (printf, 4, 5)));
void _fatal(const char *func, const char *file, int line, const char *format, ...)
__attribute__ ((format (printf, 4, 5))) __attribute__ ((noreturn));
#define log(format, args...) \
_log(__FUNCTION__,__FILE__,__LINE__, format , ## args)
#define warn(format, args...) \
_warn(__FUNCTION__,__FILE__,__LINE__, format , ## args)
#define fatal(format, args...) \
_fatal(__FUNCTION__,__FILE__,__LINE__, format , ## args)
int file2fd(const char *path, const char *mode, int fd);
/* 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 /* INC_UTIL_H */
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