openalbridge/errlib.c
author smxx
Sat, 27 Mar 2010 21:04:38 +0000
changeset 3127 9ebdc21aba87
parent 2529 51e5df1c8462
permissions -rw-r--r--
CMake * I must not eat melon bombs * I must not eat melon bombs
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/*
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 module: errlib.c
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 purpose: library of error functions
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 reference: Stevens, Unix network programming (2ed), p.922
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 */
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#include "errlib.h"
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#define MAXLINE 4095
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#ifdef __CPLUSPLUS
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extern "C" {
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#endif 
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        int daemon_proc = 0; /* set to 0 if stdout/stderr available, else set to 1 */
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        static void err_doit (int errnoflag, int level, const char *fmt, va_list ap)
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        {
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                int errno_save = errno, n;
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                char buf[MAXLINE+1];
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                vsnprintf (buf, MAXLINE, fmt, ap);
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                n = strlen(buf);
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                if (errnoflag)
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                        snprintf (buf+n, MAXLINE-n, ": %s", strerror(errno_save));
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                strcat (buf, "\n");
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                if (daemon_proc)
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                        syslog (level, buf);
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                else {
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                        fflush (stdout);
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                        fprintf (stderr, buf);
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                        fflush (stderr);
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                }
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                return;
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        }
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        void err_ret (const char *fmt, ...)
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        {
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                va_list ap;
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                va_start (ap, fmt);
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                err_doit (1, LOG_INFO, fmt, ap);
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                va_end (ap);
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                return;
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        }
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        void err_sys (const char *fmt, ...)
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        {
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                va_list ap;
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                va_start (ap, fmt);
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                err_doit (1, LOG_ERR, fmt, ap);
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                va_end (ap);
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                exit (1);
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        }
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        void err_msg (const char *fmt, ...)
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        {
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                va_list ap;
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                va_start (ap, fmt);
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                err_doit (0, LOG_INFO, fmt, ap);
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                va_end (ap);
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                return;
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        }
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        void err_quit (const char *fmt, ...)
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        {
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                va_list ap;
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                va_start (ap, fmt);
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                err_doit (0, LOG_ERR, fmt, ap);
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                va_end (ap);
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                exit (1);
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        }
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        void err_dump (const char *fmt, ...)
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        {
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                va_list ap;
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                va_start (ap, fmt);
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                err_doit (1, LOG_ERR, fmt, ap);
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                va_end (ap);
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                abort();
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        }
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#ifdef __CPLUSPLUS
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}
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#endif