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Diffstat (limited to 'unix/file_descriptor.mdwn')
| -rw-r--r-- | unix/file_descriptor.mdwn | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/unix/file_descriptor.mdwn b/unix/file_descriptor.mdwn new file mode 100644 index 00000000..b40db67f --- /dev/null +++ b/unix/file_descriptor.mdwn @@ -0,0 +1,18 @@ +[[!meta copyright="Copyright © 2010, 2011 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +A *file descriptor* is a [[concept]] of [[UNIX]], and represents a +non-[[persistent|persistency]] handle to an object (a file, for example). With +respect to specific aspects, it is comparable to a [[capability]]. +This is detailed in {{$capability#wikipedia_capability-based_security}}. + +In a GNU Hurd system, the concept of file descriptors is based on object +handles (through [[Mach ports|microkernel/mach/port]]), and is [[implemented in +glibc|glibc/file_descriptor]]. |