logging.h

   1 #ifndef MODINITTOOLS_LOGGING_H
   2 #define MODINITTOOLS_LOGGING_H
   3
   4 /* Do we use syslog for messages or stderr? */
   5 extern int logging;
   6
   7 /* Do we want to silently drop all warnings? */
   8 extern int quiet;
   9
  10 /* Do we want informative messages as well as errors? */
  11 extern int verbose;
  12
  13 extern void fatal(const char *fmt, ...);
  14 extern void error(const char *fmt, ...);
  15 extern void warn(const char *fmt, ...);
  16 extern void info(const char *fmt, ...);
  17
  18 typedef void (*errfn_t)(const char *fmt, ...);
  19
  20 static inline void grammar(const char *cmd,
  21                            const char *filename, unsigned int line)
  22 {
  23         warn("%s line %u: ignoring bad line starting with '%s'\n",
  24              filename, line, cmd);
  25 }
  26
  27 #define NOFAIL(ptr)  do_nofail((ptr), __FILE__, __LINE__, #ptr)
  28
  29 #define nofail_asprintf(ptr, ...)                               \
  30         do { if (asprintf((ptr), __VA_ARGS__) < 0)              \
  31                 do_nofail(NULL, __FILE__, __LINE__, #ptr);      \
  32         } while(0)
  33
  34 static inline void *do_nofail(void *ptr, const char *file, int line, const char *expr)
  35 {
  36         if (!ptr) {
  37                 fatal("Memory allocation failure %s line %d: %s.\n",
  38                       file, line, expr);
  39         }
  40         return ptr;
  41 }
  42
  43 #endif /* MODINITTOOLS_LOGGING_H */