1/* util.h ....... error message utilities. 2 * C. Scott Ananian <cananian@alumni.princeton.edu> 3 * 4 * $Id: util.h,v 1.6 2005/03/10 01:18:20 quozl Exp $ 5 */ 6 7#ifndef INC_UTIL_H 8#define INC_UTIL_H 9 10/* log_string is an identifier for this pptp process, passed from 11 command line using --log-string=X, and included with every log message. 12 Useful for people with multiple pptp sessions open at a time */ 13extern char * log_string; 14 15/* log_level sets the logging verbosity. Values range from 0 (errors only) 16 to 1 (errors and warnings) to 2 (high verbosity, for debugging) */ 17extern int log_level; 18 19void _log(const char *func, const char *file, int line, const char *format, ...) 20 __attribute__ ((format (printf, 4, 5))); 21void _warn(const char *func, const char *file, int line, const char *format, ...) 22 __attribute__ ((format (printf, 4, 5))); 23void _fatal(const char *func, const char *file, int line, const char *format, ...) 24 __attribute__ ((format (printf, 4, 5))) __attribute__ ((noreturn)); 25 26#define log(format, args...) \ 27 _log(__FUNCTION__,__FILE__,__LINE__, format , ## args) 28#define warn(format, args...) \ 29 _warn(__FUNCTION__,__FILE__,__LINE__, format , ## args) 30#define fatal(format, args...) \ 31 _fatal(__FUNCTION__,__FILE__,__LINE__, format , ## args) 32 33int file2fd(const char *path, const char *mode, int fd); 34 35/* signal to pipe delivery implementation */ 36 37/* create a signal pipe, returns 0 for success, -1 with errno for failure */ 38int sigpipe_create(); 39 40/* generic handler for signals, writes signal number to pipe */ 41void sigpipe_handler(int signum); 42 43/* assign a signal number to the pipe */ 44void sigpipe_assign(int signum); 45 46/* return the signal pipe read file descriptor for select(2) */ 47int sigpipe_fd(); 48 49/* read and return the pending signal from the pipe */ 50int sigpipe_read(); 51 52void sigpipe_close(); 53 54#endif /* INC_UTIL_H */ 55