Messages in this thread | | | Subject | Re: Problem : can't make pipe non-blocking on 2.5.X | From | OGAWA Hirofumi <> | Date | Thu, 15 Aug 2002 06:46:18 +0900 |
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Jean Tourrilhes <jt@bougret.hpl.hp.com> writes:
> Hi, > > I've got the following problem : I can't make a pipe > non-blocking with 2.5.25. > The various man pages don't mention anything > about it (actually, the "fifo" man page say that non-blocking mode > should succeed). And it seems to work fine on 2.4.20. > Sorry if this has already been reported and fixed, but I > quicly searched the changelog and archive and found nothing. > > So, who should I complain to ? >
[...]
> err = fcntl(trigger_pipe[0], F_GETFL, &flags);
F_GETFL should be, flags = fcntl(trigger_pipe[0], F_GETFL, 0);
> fprintf(stderr, "GET FLAGS : %d - %X\n", err, flags); > if(err >= 0) > { > flags |= O_NONBLOCK; > err = fcntl(trigger_pipe[0], F_SETFL, flags); > fprintf(stderr, "SET FLAGS : %d - %d\n", err, errno); > } > return(0); > } > ------------- Output 2.5.25 ---------------- > GET FLAGS : 0 - 40045F18 > SET FLAGS : -1 - 22 > ------------- Output 2.4.20-pre2 ----------- > GET FLAGS : 0 - 40043F18 > SET FLAGS : 0 - 0 > --------------------------------------------
Looks like effect of different implement of O_DIRECT(0x40000). Thanks. -- OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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