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authorRoland McGrath <roland@gnu.org>1994-10-01 07:44:49 +0000
committerRoland McGrath <roland@gnu.org>1994-10-01 07:44:49 +0000
commitcbd8b271600173af776928e0316838d1b2f97cb2 (patch)
tree9f76b52a18611709eb12b97a76e5ce35bfcdf885
parentb30758c5f344ce10e860c26a606fb505cedda1ea (diff)
Formerly update.c.~3~
-rw-r--r--sutils/update.c40
1 files changed, 15 insertions, 25 deletions
diff --git a/sutils/update.c b/sutils/update.c
index 07e38e41..3c0790c6 100644
--- a/sutils/update.c
+++ b/sutils/update.c
@@ -20,44 +20,34 @@
#include <unistd.h>
#include <stdio.h>
-#include <fcntl.h>
int
-main ()
+main (int argc, char **argv)
{
- int fd;
-
- switch (fork ())
+ int interval;
+
+ switch (argc)
{
- case -1:
- perror ("Cannot fork");
- exit (1);
- case 0:
+ case 1:
+ interval = 30;
+ break;
+ case 2:
+ interval = atoi (argv[1]);
break;
default:
- _exit (0);
- }
-
- if (setsid () == -1)
- {
- perror ("Cannot setsid");
+ fprintf (stderr, "Usage: %s [SECONDS]\n", argv[0]);
exit (1);
}
- chdir ("/");
- fd = open ("/dev/null", O_RDWR, 0);
- if (fd != -1)
+ if (daemon (0, 0))
{
- dup2 (fd, STDIN_FILENO);
- dup2 (fd, STDOUT_FILENO);
- dup2 (fd, STDERR_FILENO);
- if (fd < STDERR_FILENO)
- close (fd);
+ perror ("daemon");
+ exit (1);
}
-
+
for (;;)
{
sync ();
- sleep (30);
+ sleep (interval);
}
}