08-18-2009
Want to get my foot in the door
Hello all,
I'm new here and I've done some searches, but the posts I've found of relevance are nearly a decade old now. I want to get into the sys admin side of unix, but I have no idea where to start. I have grown up working on and tweaking computers my entire life. I have tooled around with numerous versions of Linux and even (please don't judge me on ethical grounds) have loaded OSX on my PC. I love the flexiblility of unix based systems, and hate the "canned" feeling of MS systems. I'll stop rambling now and get to the point. What I have read is that the only way to truely learn unix is to get on site and do it, but that seems like a catch-22. I want to know is what do I need to get my foot in the door so I can actually start working in the field? I'm capable on the windows side of sys administration and while I'm no expert I'm familiar with networking and tcp/ip. I have almost no knowledge of C :-(. As far as unix goes I have been able to set up and install Linux and osx on various platforms and get them to at least a functional state for the purposes I intended for them. Well I'll wrap this up, and I'm sorry it was so long winded, but I'm trying to get a good handle on what I need to know in the current market.
Thanks in advance,
Don Reilly
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LEARN ABOUT OPENDARWIN
door_revoke
door_revoke(3DOOR) Door Library Functions door_revoke(3DOOR)
NAME
door_revoke - revoke access to a door descriptor
SYNOPSIS
cc -mt [ flag ... ] file ... -ldoor [ library ... ]
#include <door.h>
int door_revoke(int d);
DESCRIPTION
The door_revoke() function revokes access to a door descriptor. Door descriptors are created with door_create(3DOOR). The door_revoke()
function performs an implicit call to close(2), marking the door descriptor d as invalid.
A door descriptor can only be revoked by the process that created it. Door invocations that are in progress during a door_revoke() invoca-
tion are allowed to complete normally.
RETURN VALUES
Upon successful completion, door_revoke() returns 0. Otherwise, door_revoke() returns -1 and sets errno to indicate the error.
ERRORS
The door_revoke() function will fail if:
EBADF An invalid door descriptor was passed.
EPERM The door descriptor was not created by this process (with door_create(3DOOR)).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |all |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
close(2), door_create(3DOOR), libdoor(3LIB), attributes(5)
SunOS 5.10 21 Aug 1997 door_revoke(3DOOR)