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fc5acc0151
Implement proper synopsis wrapping for HTML generation. This was done in three pieces. First, add HTML-specific tags to the POD to mark the synopsis for HTML purposes so that we can apply style information to it. Second, update the style sheet to indent all lines except for the first in the synopsis section. Third, add the appropriate S<> tags around option and argument pairs so that we don't wrap between the option and its argument. Unfortunately, due to the <I<foo>> style that looks nicer for other reasons, we have to use the very verbose S<<< >>>. Oh well.
107 lines
3.5 KiB
Plaintext
107 lines
3.5 KiB
Plaintext
=head1 NAME
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fs setcell - Configures permissions for setuid programs from specified cells
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=head1 SYNOPSIS
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=for html
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<div class="synopsis">
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B<fs setcell> S<<< B<-cell> <I<cell name>>+ >>> [B<-suid>] [B<-nosuid>] [B<-help>]
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B<fs setce> S<<< B<-c> <I<cell name>>+ >>> [B<-s>] [B<-n>] [B<-h>]
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=for html
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</div>
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=head1 DESCRIPTION
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The B<fs setcell> command sets whether the Cache Manager allows programs
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(and other executable files) from each cell named by the B<-cell> argument
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to run with setuid permission. By default, the Cache Manager allows
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programs from its home cell to run with setuid permission, but not
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programs from any foreign cells. A program belongs to the same cell as the
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file server machine that houses the volume in which the program's binary
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file resides, as specified in the file server machine's
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F</usr/afs/etc/ThisCell> file. The Cache Manager determines its own home
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cell by reading the F</usr/vice/etc/ThisCell> file at initialization.
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To enable programs from each specified cell to run with setuid permission,
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include the B<-suid> flag. To prohibit programs from running with setuid
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permission, include the B<-nosuid> flag, or omit both flags.
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The B<fs setcell> command directly alters a cell's setuid status as
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recorded in kernel memory, so rebooting the machine is unnecessary.
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However, non-default settings do not persist across reboots of the machine
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unless the appropriate B<fs setcell> command appears in the machine's AFS
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initialization file.
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To display a cell's setuid status, issue the B<fs getcellstatus> command.
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=head1 CAUTIONS
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AFS does not recognize effective UID: if a setuid program accesses AFS
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files and directories, it does so using the current AFS identity of the
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AFS user who initialized the program, not of the program's owner. Only
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the local file system recognizes effective UID.
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Only members of the system:administrators group can turn on the setuid
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mode bit on an AFS file or directory.
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When the setuid mode bit is turned on, the UNIX C<ls -l> command displays
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the third user mode bit as an C<s> instead of an C<x>. However, the C<s>
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does not appear on an AFS file or directory unless setuid permission is
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enabled for the cell in which the file resides.
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=head1 OPTIONS
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=over 4
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=item B<-cell> <I<cell name>>+
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Names each cell for which to set setuid status. Provide the fully
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qualified domain name, or a shortened form that disambiguates it from the
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other cells listed in the local F</usr/vice/etc/CellServDB> file.
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=item B<-suid>
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Allows programs from each specified cell to run with setuid
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privilege. Provide it or the B<-nosuid> flag, or omit both flags to
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disallow programs from running with setuid privilege.
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=item B<-nosuid>
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Prevents programs from each specified cell from running with setuid
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privilege. Provide it or the B<-suid> flag, or omit both flags to disallow
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programs form running with setuid privilege.
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=item B<-help>
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Prints the online help for this command. All other valid options are
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ignored.
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=back
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=head1 EXAMPLES
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The following command enables executable files from the State University
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cell to run with setuid privilege on the local machine:
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% fs setcell -cell stateu.edu -suid
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=head1 PRIVILEGE REQUIRED
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The issuer must be logged in as the local superuser root.
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=head1 SEE ALSO
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L<fs_getcellstatus(1)>
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=head1 COPYRIGHT
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IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
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This documentation is covered by the IBM Public License Version 1.0. It was
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converted from HTML to POD by software written by Chas Williams and Russ
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Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
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