Patch-ID# 100527-02
Keywords: 4.0, selects, old-style, rsh
Synopsis: SunOS 4.1.1;4.1.2: rsh uses old-style selects instead of 4.0 selects
Date: 5/6/92

SunOS release: 4.1.1, 4.1.2

Unbundled Product: 

Unbundled Release: 

Topic: if rsh is exec'ed by a program with many open files, file desciptors can get confused

BugId's fixed with this patch: 1017537, 1088518.

Architectures for which this patch is available: sun3, sun4

Patches which may conflict with this patch: 

Obsoleted by:

Files included with this patch: /usr/ucb/rsh

Problem Description: 

Bugid: 1017537
--------------
If a process with a lot of open file descriptors exec's rsh, rsh's select()
calls can get confused because they use the old 3.x-style select interface.

Bugid: 1088518
--------------
An incorrect bug fix was made to patch 100527-01. This incorrect
bug fix causes rsh to wrongly ignore standard input. This makes it
impossible to do things like: 
	$ cat /etc/termcap | rsh host wc -l


Install Instructions: 

As root:
cd to the appropriate release subdirectory of the patch:

# cd 4.1.[12]

save the existing /usr/ucb/rsh executable
# mv /usr/ucb/rsh /usr/ucb/rsh.FCS

copy the new rsh for the appropriate architecture to /usr/ucb
# cp `arch`/rsh /usr/ucb

set the permissions and setuid bit of the new rsh program
# chmod 4755 /usr/ucb/rsh