bin/67943: find(1) fails when current directory is not readable by user

[Arkadi Shishlov]

>Number:         67943
>Category:       bin
>Synopsis:       find(1) fails when current directory is not readable by user
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jun 14 18:40:22 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Arkadi Shishlov
>Release:        FreeBSD 4.9-RELEASE-p3 i386
>Organization:
>Environment:
System: FreeBSD idea.hosting.lv 4.9-RELEASE-p3 FreeBSD 4.9-RELEASE-p3 #0: Wed Mar 3 21:51:26 EET 2004 root at idea.hosting.lv:/usr/obj/usr/src/sys/idea i386

>Description:
find(1) utility opens current directory dotfd = open(".", O_RDONLY, 0)
and use obtained dotfd handle later in fchdir(). 
If current directory is not readable by user then find fails.

>How-To-Repeat:
mkdir dir
chmod -r dir
cd dir
find /tmp
find: .: Permission denied

>Fix:
dotfd handle is only used when -exec predicate is requested.
find(1) from GNU findutils combat this situation by using getcwd()
call in case cwd is not readable.
>Release-Note:
>Audit-Trail:
>Unformatted: