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125 lines
2.4 KiB
C
125 lines
2.4 KiB
C
#include "echoping.h"
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/* $Id$ */
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/* Most of error-handling routines stolen from Stevens' books */
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void
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my_perror ()
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{
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fprintf (stderr, " %s\n", sys_err_str ());
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}
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/*
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* Recoverable error. Print a message, and return to caller.
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*
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* err_ret(str, arg1, arg2, ...)
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*
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* The string "str" must specify the conversion specification for any args.
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*/
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/* VARARGS1 */
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void
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err_ret (char *str, ...)
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{
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va_list args;
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va_start (args, str);
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vfprintf (stderr, str, args);
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va_end (args);
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my_perror ();
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fflush (stdout);
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fflush (stderr);
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return;
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}
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/*
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* Fatal error. Print a message and terminate. Don't dump core and don't
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* print the system's errno value.
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*
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* err_quit(str, arg1, arg2, ...)
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*
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* The string "str" must specify the conversion specification for any args.
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*/
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/* VARARGS1 */
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void
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err_quit (char *str, ...)
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{
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va_list args;
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va_start (args, str);
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vfprintf (stderr, str, args);
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fputc ('\n', stderr);
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va_end (args);
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exit (1);
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}
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/*
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* Fatal error related to a system call. Print a message and terminate.
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* Don't dump core, but do print the system's errno value and its associated
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* message.
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*
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* err_sys(str, arg1, arg2, ...)
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*
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* The string "str" must specify the conversion specification for any args.
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*/
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/* VARARGS1 */
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void
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err_sys (char *str, ...)
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{
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va_list args;
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va_start (args, str);
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vfprintf (stderr, str, args);
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va_end (args);
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my_perror ();
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exit (1);
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}
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void
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usage ()
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{
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fprintf (stderr,
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"Usage: %s [-v] [-r] [-f fill] [-t timeout] [-c] [-d] [-u] [-s size] [-n number] [-w delay] [-h url] [-i url] [-p priority] [-P tos] [-C] [-S] [-4] [-6] hostname[:port]\n",
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progname);
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exit (1);
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}
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/*
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* Return a string containing some additional operating-system dependent
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* information. Note that different versions of UNIX assign different
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* meanings to the same value of "errno" (compare errno's starting with 35
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* between System V and BSD, for example). This means that if an error
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* condition is being sent to another UNIX system, we must interpret the
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* errno value on the system that generated the error, and not just send the
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* decimal value of errno to the other system.
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*/
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char *
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sys_err_str ()
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{
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static char msgstr[200];
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if (errno != 0)
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{
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if (errno > 0 && errno < sys_nerr)
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sprintf (msgstr, "(%s)", sys_errlist[errno]);
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else
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sprintf (msgstr, "(errno = %d)", errno);
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}
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else
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{
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msgstr[0] = '\0';
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}
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return (msgstr);
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}
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