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/*
* Copyright 1988 by Rayan S. Zachariassen, all rights reserved.
* This will be free software, but only when it is finished.
*/
#include "hostenv.h"
#include "mailer.h"
#include <fcntl.h>
#include "zmsignal.h"
#include "libz.h"
/*
* Reopen the log files, done at daemon startup, and when you want to roll over
* the log files by doing a kill -HUP `cat .pid.router`. The result of calling
* this routine should be that stdout and stderr are attached to the same output
* stream (for now anyway).
* XX: possibly too much done inside a signal handler?
*/
extern char *progname;
extern char *logfn;
/* RETSIGTYPE */ int
loginit(sig)
int sig;
{
int flags;
if (logfn == NULL)
return -1;
fflush(stdout);
rewind(stdout);
fflush(stderr);
rewind(stderr);
if (freopen(logfn, "a+", stdout) != stdout
|| dup2(FILENO(stdout), FILENO(stderr)) < 0) { /* sigh */
/* XX: stderr might be closed at this point... */
fprintf(stderr, "%s: cannot open log: %s\n", progname, logfn);
return -1;
}
#if defined(F_SETFL) && defined(O_APPEND)
flags = fcntl(FILENO(stdout), F_GETFL, 0);
flags |= O_APPEND;
fcntl(FILENO(stdout), F_SETFL, flags);
#endif /* F_SETFL */
setvbuf(stdout, (char *)NULL, _IOLBF, 0);
setvbuf(stderr, (char *)NULL, _IOLBF, 0);
SIGNAL_HANDLE(sig, (RETSIGTYPE(*)())loginit);
return 0;
}
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