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/*
* rotate.c:
*
* Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
* All rights reserved.
*
*/
static char rcsid[] = "$Id$";
/*
* $Log$
* Revision 1.9 2008/03/07 12:37:04 james
* *** empty log message ***
*
* Revision 1.8 2008/03/06 01:41:48 james
* *** empty log message ***
*
* Revision 1.7 2008/03/03 18:16:16 james
* *** empty log message ***
*
* Revision 1.6 2008/03/03 06:30:15 staffcvs
* *** empty log message ***
*
* Revision 1.5 2008/03/03 06:26:05 staffcvs
* *** empty log message ***
*
* Revision 1.4 2008/03/03 06:22:51 james
* *** empty log message ***
*
* Revision 1.3 2008/03/03 06:20:14 james
* *** empty log message ***
*
* Revision 1.2 2008/03/03 06:04:42 james
* *** empty log message ***
*
* Revision 1.1 2008/03/03 06:04:18 james
* *** empty log message ***
*
*/
#include "project.h"
#include <sys/stat.h>
#define ROTATE_IF_OVER (4*1024*1024)
#define NUM_FILES_TO_KEEP 10
#define GZIP_AFTER 2
void
rotate_gzip (char *file)
{
switch (fork ()) {
case 0:
break;
case -1:
default:
return;
}
daemon (1, 0);
execlp ("gzip", "gzip", file, (char *) 0);
_exit (-1);
}
void
rotate (char *file)
{
char *buf1, *buf2;
int i;
if (!file)
return;
i = strlen (file) + 32;
buf1 = malloc (i);
buf2 = malloc (i);
for (i = NUM_FILES_TO_KEEP; i > 0; --i) {
sprintf (buf1, "%s.%d", file, i - 1);
sprintf (buf2, "%s.%d", file, i);
rename (buf1, buf2);
sprintf (buf1, "%s.%d.gz", file, i - 1);
sprintf (buf2, "%s.%d.gz", file, i);
rename (buf1, buf2);
}
sprintf (buf1, "%s.%d", file, 0);
rename (file, buf1);
sprintf (buf1, "%s.%d", file, GZIP_AFTER);
if (!access (buf1, R_OK))
rotate_gzip (buf1);
free (buf2);
free (buf1);
}
int
rotate_check (char *file)
{
struct stat st;
if (!file)
return 0;
if (stat (file, &st))
return 0;
if (st.st_size <= ROTATE_IF_OVER)
return 0;
return 1;
}
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