NFS Services Administrator's Guide

Configuring and Administering NFS

Configuring and Administering an NFS Client

Chapter 2 47

suid

nosuid

(default: suid)

Specify suid if you want to allow mounted

programs that have setuid permission to run with

the permissions of their owners, regardless of who

starts them. If a program with setuid permission

is owned by root, it will run with root permissions,

regardless of who starts it.

Specify nosuid to protect your system against

setuid programs that may run as root and

damage your system.

hard

soft

(default: hard)

Specify hard if users will be writing to the

mounted directory or running programs located in

it. When NFS tries to access a hard-mounted

directory, it keeps trying until it succeeds or

someone interrupts its attempts. If the server

goes down, any processes using the mounted

directory hang until the server comes back up and

then continue processing without errors.

Interruptible hard mounts may be interrupted

with CTRL-C or kill (see the intr option, later).

Specify soft if the server is unreliable and you

want to prevent systems from hanging when the

server is down. When NFS tries to access a

soft-mounted directory, it gives up and returns an

error message after trying retrans times (see the

retrans option, later). Any processes using the

mounted directory will return errors if the server

goes down.

Table 2-2 NFS Mount Options (Continued)