February 2004
Intermediate to advanced
383 pages
11h 49m
English
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Name
notifyd
Synopsis
notifyd [-no_restart] [-no_startup] [-shm_pages integer]Description
The notification server for the API described in the
notify(3) manpage. (Use man 3
notify to display this page.) Using the API, processes may
post notifications associated with arbitrary names, and other
processes can register to be informed of such notification events. (A
name should follow the convention used for Java classes: the reversed
DNS domain name associated with the responsible organization,
followed by one or more segments; for example,
com.apple.system.timezone.)
notifyd sets up the shared memory used for the
notify_register_check call, and directly answers
notify_check requests for other notification
methods (signal, Mach port, and file descriptor).
notifyd also reads a configuration file,
/etc/notify.conf. Each line begins with one of
two keywords: reserve or
monitor. The reserve keyword
lays out access restrictions for portions of the namespace. The
arguments are a name, a user and a group that
“owns” the name, and a set of read
/write permissions for the user, the group, and others, similar to
those applied to files. For example, the following line:
reserve com.apple.system. 0 0 rwr-r-
states that any names starting with
com.apple.system. are owned by UID 0
(root) and GID 0 (wheel),
and that anyone can receive notifications for these names, but only
root (the owner) can post notifications.
The monitor keyword takes a name and a filename as arguments. When the specified file is changed, ...
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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.
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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.