ip-up
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- From James.Stevens@jrcs.co.uk Mon Aug 25 18:11:36 1997
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- Date: Mon, 18 Aug 1997 10:55:57 +0100
- From: James Stevens <James.Stevens@jrcs.co.uk>
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- Subject: A Little Tip...
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- Seeing Eric tip us that we could run a "fetchmail -quit" in the
- "ip-down" script, I thougt it would be neat to run a fetchmail
- collection in the "ip-up" script. That way mail is collected
- automatically every time I am connecting to Internet for whatever reason
- (I use "diald" to automatically manage my connection).
- However, it did not work. It hung right after the POP3 login. I tracked
- this down to the fact that the "pppd" masks a wide range of signals and
- this means a time-out does not kick in. As I run the "ip-up" script in
- "bash" this masking is inheritied by "fetchmail".
- So, I wrote a silly little "C" program that unmasks all signals and then
- runs a command of you choice (in this case fetchmail). This is the code
- for that program :-
- #include <stdio.h>
- #include <signal.h>
- main(int argc,char * argv[])
- {
- sigset_t set;
- if (argc>1)
- {
- sigfillset(&set);
- sigprocmask(SIG_UNBLOCK,&set,NULL);
- system(argv[1]);
- }
- }
- I call it "allsigs". So, now in my "ip-up" I have the line :-
- allsigs "fetchmail -f /etc/fetahmail"
- Note the quotes as "allsigs" only looks at argv[1]. I guess this
- unmasking of all signals could be added into "fetchmail" ?
- James