| /* |
| * 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 "ap_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); |
| } |
| } |
| } |