usr.bin/tconv/quit.c

   1 /*
   2  * quit.c
   3  *
   4  * By Ross Ridge
   5  * Public Domain
   6  * 92/02/01 07:30:14
   7  *
   8  * quit with a diagnostic message printed on stderr
   9  *
  10  * $DragonFly: src/usr.bin/tconv/quit.c,v 1.2 2003/10/04 22:36:52 hmp Exp $
  11  */
  12
  13 #define NOTLIB
  14 #include "defs.h"
  15
  16 #ifdef USE_SCCS_IDS
  17 static const char SCCSid[] = "@(#) mytinfo quit.c 3.2 92/02/01 public domain, By Ross Ridge";
  18 #endif
  19
  20 char *prg_name;
  21
  22 #if defined(USE_PROTOTYPES) && !defined(lint)
  23 void (*cleanup)(int);
  24 #else
  25 void (*cleanup)();
  26 #endif
  27
  28 /* PRINTFLIKE2 */
  29 noreturn
  30 void
  31 quit(int e, char *fmt, ...)
  32 {
  33         va_list ap;
  34
  35         va_start(ap, fmt);
  36
  37         (*cleanup)(e);
  38
  39         if (e != 0)
  40                 fprintf(stderr, "%s: ", prg_name);
  41 #ifdef USE_DOPRNT
  42         _doprnt(fmt, ap, stderr);
  43 #else
  44         vfprintf(stderr, fmt, ap);
  45 #endif
  46         putc('\n', stderr);
  47         if (e > 0 && e < sys_nerr) {
  48                 fprintf(stderr, "%d - %s\n", e, sys_errlist[e]);
  49         }
  50         fflush(stderr);
  51         exit(e);
  52 }