scron

simple cron daemon
git clone git://git.2f30.org/scron.git
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commit 9abf25f9ddbf6fec424115e9873b79dd033e48e7
parent 3d3ff2515bc16f6db71df32efa1cdf903d068be2
Author: Ari Malinen <ari.malinen@gmail.com>
Date:   Tue Jun 10 19:52:46 +0300

support for syslog

Diffstat:
README | 15++++-----------
cron.conf | 2+-
dcron.c | 23++++++++++++++++++-----
3 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/README b/README @@ -3,17 +3,10 @@ dcron - simple cron daemon This tool is not ready for use! info: -Single daemon, single config file. One task per line. Tab is separator. +Single daemon, single config file. +Logs to stdout and syslog. -example: +config: # min,hour,mday,mon,wday,command * * * * * exec echo minute passed -30 * * * * exec echo 30 min passed - -output: -dcron 18:53 10.05.2014 -run: exec echo minute passed -minute passed -dcron 18:54 10.05.2014 -run: exec echo minute passed -minute passed +30 * * * * exec echo its half past diff --git a/cron.conf b/cron.conf @@ -1,3 +1,3 @@ # min,hour,mday,mon,wday,command * * * * * exec echo minute passed -30 * * * * exec echo 30 min passed +30 * * * * exec echo its half past diff --git a/dcron.c b/dcron.c @@ -4,13 +4,14 @@ #include <time.h> #include <ctype.h> #include <unistd.h> +#include <syslog.h> #define MAXLEN 100 #define SLEEP 60 static const char config[] = "cron.conf"; -int main(void) { +int main(int argc, char *argv[]) { FILE *fp; char line[MAXLEN+1]; char *col; @@ -20,14 +21,20 @@ int main(void) { time_t rawtime; struct tm *tmtime; + if (argc > 1 && !strcmp("-h", argv[1])) { + fprintf(stderr, "usage: %s [-h = help] [-d = daemon]\n", argv[0]); + return 1; + } else if (argc > 1 && !strcmp("-d", argv[1])) { + daemon(1, 0); + } + + openlog(argv[0], LOG_CONS | LOG_PID, LOG_LOCAL1); + syslog(LOG_NOTICE, "started by user %d", getuid()); + while (1) { rawtime = time(NULL); tmtime = localtime(&rawtime); - printf("dcron %.2d:%.2d %.2d.%.2d.%.4d\n", - tmtime->tm_hour, tmtime->tm_min, - tmtime->tm_mday, tmtime->tm_mon, tmtime->tm_year+1900); - fp = fopen(config, "r"); if (fp == NULL) { fprintf(stderr, "error: cant read %s\n", config); @@ -84,7 +91,12 @@ int main(void) { if (mday == -1 || mday == tmtime->tm_mday) { if (mon == -1 || mon == tmtime->tm_mon) { if (wday == -1 || wday == tmtime->tm_wday) { + printf("dcron %.2d:%.2d %.2d.%.2d.%.4d\n", + tmtime->tm_hour, tmtime->tm_min, + tmtime->tm_mday, tmtime->tm_mon, tmtime->tm_year+1900); + printf("run: %s", cmd); + syslog(LOG_NOTICE, "run: %s", cmd); system(cmd); } } @@ -95,6 +107,7 @@ int main(void) { } sleep(SLEEP); } + closelog(); fclose(fp); return 0; }