lib/ccan/err/err.c

   1 #include "err.h"
   2
   3 #if !HAVE_ERR_H
   4 #include <stdarg.h>
   5 #include <stdio.h>
   6 #include <errno.h>
   7 #include <string.h>
   8 #include <stdlib.h>
   9
  10 static const char *progname = "unknown program";
  11
  12 void err_set_progname(const char *name)
  13 {
  14         progname = name;
  15 }
  16
  17 void NORETURN err(int eval, const char *fmt, ...)
  18 {
  19         int err_errno = errno;
  20         va_list ap;
  21
  22         fprintf(stderr, "%s: ", progname);
  23         va_start(ap, fmt);
  24         vfprintf(stderr, fmt, ap);
  25         va_end(ap);
  26         fprintf(stderr, ": %s\n", strerror(err_errno));
  27         exit(eval);
  28 }
  29
  30 void NORETURN errx(int eval, const char *fmt, ...)
  31 {
  32         va_list ap;
  33
  34         fprintf(stderr, "%s: ", progname);
  35         va_start(ap, fmt);
  36         vfprintf(stderr, fmt, ap);
  37         va_end(ap);
  38         fprintf(stderr, "\n");
  39         exit(eval);
  40 }
  41
  42 void warn(const char *fmt, ...)
  43 {
  44         int err_errno = errno;
  45         va_list ap;
  46
  47         fprintf(stderr, "%s: ", progname);
  48         va_start(ap, fmt);
  49         vfprintf(stderr, fmt, ap);
  50         va_end(ap);
  51         fprintf(stderr, ": %s\n", strerror(err_errno));
  52 }
  53
  54 void warnx(const char *fmt, ...)
  55 {
  56         va_list ap;
  57
  58         fprintf(stderr, "%s: ", progname);
  59         va_start(ap, fmt);
  60         vfprintf(stderr, fmt, ap);
  61         va_end(ap);
  62         fprintf(stderr, "\n");
  63 }
  64 #endif