busybox/libbb/info_msg.c
Denis Vlasenko 517413f9af bb_info_msg: make it do atomic, unbuffered writes
udhcpc: fix a problem where we don't open listening socket fast enough

function                                             old     new   delta
bb_info_msg                                           70     126     +56
change_listen_mode                                    37      78     +41
udhcp_listen_socket                                  151     124     -27
udhcpc_main                                         2344    2285     -59
2008-12-10 11:16:47 +00:00

57 lines
1.1 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include <syslog.h>
void FAST_FUNC bb_info_msg(const char *s, ...)
{
#ifdef THIS_ONE_DOESNT_DO_SINGLE_WRITE
va_list p;
/* va_copy is used because it is not portable
* to use va_list p twice */
va_list p2;
va_start(p, s);
va_copy(p2, p);
if (logmode & LOGMODE_STDIO) {
vprintf(s, p);
fputs(msg_eol, stdout);
}
if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
vsyslog(LOG_INFO, s, p2);
va_end(p2);
va_end(p);
#else
int used;
char *msg;
va_list p;
if (logmode == 0)
return;
va_start(p, s);
used = vasprintf(&msg, s, p);
if (used < 0)
return;
if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
syslog(LOG_INFO, "%s", msg);
if (logmode & LOGMODE_STDIO) {
fflush(stdout);
/* used = strlen(msg); - must be true already */
msg[used++] = '\n';
full_write(STDOUT_FILENO, msg, used);
}
free(msg);
va_end(p);
#endif
}