release/src/router/busybox/libbb/info_msg.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Utility routines.
   4  *
   5  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   8  */
   9
  10 #include "libbb.h"
  11 #include <syslog.h>
  12
  13 void FAST_FUNC bb_info_msg(const char *s, ...)
  14 {
  15 #ifdef THIS_ONE_DOESNT_DO_SINGLE_WRITE
  16         va_list p;
  17         /* va_copy is used because it is not portable
  18          * to use va_list p twice */
  19         va_list p2;
  20
  21         va_start(p, s);
  22         va_copy(p2, p);
  23         if (logmode & LOGMODE_STDIO) {
  24                 vprintf(s, p);
  25                 fputs(msg_eol, stdout);
  26         }
  27         if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
  28                 vsyslog(LOG_INFO, s, p2);
  29         va_end(p2);
  30         va_end(p);
  31 #else
  32         int used;
  33         char *msg;
  34         va_list p;
  35
  36         if (logmode == 0)
  37                 return;
  38
  39         va_start(p, s);
  40         used = vasprintf(&msg, s, p);
  41         if (used < 0)
  42                 return;
  43
  44         if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
  45                 syslog(LOG_INFO, "%s", msg);
  46         if (logmode & LOGMODE_STDIO) {
  47                 fflush(stdout);
  48                 /* used = strlen(msg); - must be true already */
  49                 msg[used++] = '\n';
  50                 full_write(STDOUT_FILENO, msg, used);
  51         }
  52
  53         free(msg);
  54         va_end(p);
  55 #endif
  56 }