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/*
* Simple program to rotate Apache logs without having to kill the server.
*
* Contributed by Ben Laurie <ben@algroup.co.uk>
*
* 12 Mar 1996
*/
#define BUFSIZE 65536
#define MAX_PATH 1024
#include "apr_config.h"
#include <time.h>
#include <errno.h>
#include <fcntl.h>
int main (int argc, char **argv)
{
char buf[BUFSIZE], buf2[MAX_PATH];
time_t tLogEnd = 0;
time_t tRotation;
int nLogFD = -1;
int nRead;
char *szLogRoot;
if (argc != 3) {
fprintf(stderr,
"%s <logfile> <rotation time in seconds>\n\n",
argv[0]);
#ifdef OS2
fprintf(stderr,
"Add this:\n\nTransferLog \"|%s.exe /some/where 86400\"\n\n",
argv[0]);
#else
fprintf(stderr,
"Add this:\n\nTransferLog \"|%s /some/where 86400\"\n\n",
argv[0]);
#endif
fprintf(stderr,
"to httpd.conf. The generated name will be /some/where.nnnn "
"where nnnn is the\nsystem time at which the log nominally "
"starts (N.B. this time will always be a\nmultiple of the "
"rotation time, so you can synchronize cron scripts with it).\n"
"At the end of each rotation time a new log is started.\n");
exit(1);
}
szLogRoot = argv[1];
tRotation = atoi(argv[2]);
if (tRotation <= 0) {
fprintf(stderr, "Rotation time must be > 0\n");
exit(6);
}
for (;;) {
nRead = read(0, buf, sizeof buf);
if (nRead == 0)
exit(3);
if (nRead < 0)
if (errno != EINTR)
exit(4);
if (nLogFD >= 0 && (time(NULL) >= tLogEnd || nRead < 0)) {
close(nLogFD);
nLogFD = -1;
}
if (nLogFD < 0) {
time_t tLogStart = (time(NULL) / tRotation) * tRotation;
sprintf(buf2, "%s.%010d", szLogRoot, (int) tLogStart);
tLogEnd = tLogStart + tRotation;
nLogFD = open(buf2, O_WRONLY | O_CREAT | O_APPEND, 0666);
if (nLogFD < 0) {
perror(buf2);
exit(2);
}
}
if (write(nLogFD, buf, nRead) != nRead) {
perror(buf2);
exit(5);
}
}
}
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