src/tests/kits/net/sock/error.c

   1 /* -*- c-basic-offset: 8; -*- */
   2 #include        <errno.h>               /* for definition of errno */
   3 #include        <stdarg.h>              /* ANSI C header file */
   4 #include        "ourhdr.h"
   5
   6 static void     err_doit(int, const char *, va_list);
   7
   8 char    *pname = NULL;          /* caller can set this from argv[0] */
   9
  10 /* Nonfatal error related to a system call.
  11  * Print a message and return. */
  12
  13 void
  14 /* $f err_ret $ */
  15 err_ret(const char *fmt, ...)
  16 {
  17         va_list         ap;
  18
  19         va_start(ap, fmt);
  20         err_doit(1, fmt, ap);
  21         va_end(ap);
  22         return;
  23 }
  24
  25 /* Fatal error related to a system call.
  26  * Print a message and terminate. */
  27
  28 void
  29 /* $f err_sys $ */
  30 err_sys(const char *fmt, ...)
  31 {
  32         va_list         ap;
  33
  34         va_start(ap, fmt);
  35         err_doit(1, fmt, ap);
  36         va_end(ap);
  37         exit(1);
  38 }
  39
  40 /* Fatal error related to a system call.
  41  * Print a message, dump core, and terminate. */
  42
  43 void
  44 /* $f err_dump $ */
  45 err_dump(const char *fmt, ...)
  46 {
  47         va_list         ap;
  48
  49         va_start(ap, fmt);
  50         err_doit(1, fmt, ap);
  51         va_end(ap);
  52         abort();                /* dump core and terminate */
  53         exit(1);                /* shouldn't get here */
  54 }
  55
  56 /* Nonfatal error unrelated to a system call.
  57  * Print a message and return. */
  58
  59 void
  60 /* $f err_msg $ */
  61 err_msg(const char *fmt, ...)
  62 {
  63         va_list         ap;
  64
  65         va_start(ap, fmt);
  66         err_doit(0, fmt, ap);
  67         va_end(ap);
  68         return;
  69 }
  70
  71 /* Fatal error unrelated to a system call.
  72  * Print a message and terminate. */
  73
  74 void
  75 /* $f err_quit $ */
  76 err_quit(const char *fmt, ...)
  77 {
  78         va_list         ap;
  79
  80         va_start(ap, fmt);
  81         err_doit(0, fmt, ap);
  82         va_end(ap);
  83         exit(1);
  84 }
  85
  86 /* Print a message and return to caller.
  87  * Caller specifies "errnoflag". */
  88
  89 static void
  90 err_doit(int errnoflag, const char *fmt, va_list ap)
  91 {
  92         int             errno_save;
  93         char    buf[MAXLINE];
  94
  95         errno_save = errno;             /* value caller might want printed */
  96         vsprintf(buf, fmt, ap);
  97         if (errnoflag)
  98                 sprintf(buf+strlen(buf), ": %s", strerror(errno_save));
  99         strcat(buf, "\n");
 100         fflush(stdout);         /* in case stdout and stderr are the same */
 101         fputs(buf, stderr);
 102         fflush(stderr);         /* SunOS 4.1.* doesn't grok NULL argument */
 103         return;
 104 }