October 2007
Intermediate to advanced
1308 pages
161h 13m
English
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
REQUIRES_DIR_FSYNC
Support fsync( ) for directory updates Port
Some versions of Unix or implementations of disk I/O do not support immediate updates of directories when the data on them changes. The ReiserFS and Ext2fs filesystems are two such implementations. Linux is one such operating system. For these, this REQUIRES_DIR_FSYNC compile-time macro is set to true, which causes sendmail to fsync(2) the directory every time it is updated.
In the event you need to port sendmail to a new operating system or to a new filesystem, you might need to set this compile-time macro to true. The way you set it to true looks like this:
APPENDDEF(`confENVDEF', `-DREQUIRES_DIR_FSYNC')
New ports should be reported to sendmail@sendmail.org so that they can be folded into future releases.
Note that beginning with V8.13, sendmail allows the
directory fsync(2) to be turned
off at runtime (even if turned on using this macro).
See the RequiresDirFsync option in RequiresDirFsync on page 1082.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.