windows/cthelper/error.c

   1 #include        <errno.h>               /* for definition of errno */
   2 #include        <stdarg.h>              /* ANSI C header file */
   3 #include        "ourhdr.h"
   4
   5 static void     err_doit(int, const char *, va_list);
   6
   7 char    *pname = NULL;          /* caller can set this from argv[0] */
   8
   9 /* Nonfatal error related to a system call.
  10  * Print a message and return. */
  11
  12 void
  13 err_ret(const char *fmt, ...)
  14 {
  15         va_list         ap;
  16
  17         va_start(ap, fmt);
  18         err_doit(1, fmt, ap);
  19         va_end(ap);
  20         return;
  21 }
  22
  23 /* Fatal error related to a system call.
  24  * Print a message and terminate. */
  25
  26 void
  27 err_sys(const char *fmt, ...)
  28 {
  29         va_list         ap;
  30
  31         va_start(ap, fmt);
  32         err_doit(1, fmt, ap);
  33         va_end(ap);
  34         exit(1);
  35 }
  36
  37 /* Fatal error related to a system call.
  38  * Print a message, dump core, and terminate. */
  39
  40 void
  41 err_dump(const char *fmt, ...)
  42 {
  43         va_list         ap;
  44
  45         va_start(ap, fmt);
  46         err_doit(1, fmt, ap);
  47         va_end(ap);
  48         abort();                /* dump core and terminate */
  49         exit(1);                /* shouldn't get here */
  50 }
  51
  52 /* Nonfatal error unrelated to a system call.
  53  * Print a message and return. */
  54
  55 void
  56 err_msg(const char *fmt, ...)
  57 {
  58         va_list         ap;
  59
  60         va_start(ap, fmt);
  61         err_doit(0, fmt, ap);
  62         va_end(ap);
  63         return;
  64 }
  65
  66 /* Fatal error unrelated to a system call.
  67  * Print a message and terminate. */
  68
  69 void
  70 err_quit(const char *fmt, ...)
  71 {
  72         va_list         ap;
  73
  74         va_start(ap, fmt);
  75         err_doit(0, fmt, ap);
  76         va_end(ap);
  77         exit(1);
  78 }
  79
  80 /* Print a message and return to caller.
  81  * Caller specifies "errnoflag". */
  82
  83 static void
  84 err_doit(int errnoflag, const char *fmt, va_list ap)
  85 {
  86         int             errno_save;
  87         char    buf[MAXLINE];
  88
  89         errno_save = errno;             /* value caller might want printed */
  90         vsprintf(buf, fmt, ap);
  91         if (errnoflag)
  92                 sprintf(buf+strlen(buf), ": %s", strerror(errno_save));
  93         strcat(buf, "\n");
  94         fflush(stdout);         /* in case stdout and stderr are the same */
  95         fputs(buf, stderr);
  96         fflush(NULL);           /* flushes all stdio output streams */
  97         return;
  98 }