Date: Thu, 15 Jun 1995 01:10:17 -0700 From: tim@sarc.city.ac.uk To: freebsd-bugs Subject: bin/517: Bad group change with 'install' Message-ID: <199506150810.BAA29481@freefall.cdrom.com> In-Reply-To: Your message of Thu, 15 Jun 1995 09:03:13 %2B0100 <199506150803.JAA11210@cripplecock.sarc.city.ac.uk>
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>Number: 517
>Category: bin
>Synopsis: Bad group change with 'install'
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Jun 15 01:10:01 1995
>Originator: Tim Wilkinson
>Organization:
Systems Architecture Research Centre, City Uni. UK.
>Release: FreeBSD 2.0.5-RELEASE i386
>Environment:
>Description:
When using 'install' to install software, the '-g' option does not change
the group correctly if the owner is also being set and the /etc/group file
is being checked because of "+groupname" entries in the /etc/passwd file.
Essentially, the information returned by 'getgrnam' is being overwritten
by the subsequent call to 'getpwnam' (which inturn calls 'getgrnam').
>How-To-Repeat:
Add an entry at then end of the password file such as "+operator:*:0:0:::"
then use "install -o root -g kmem" to install a program. The installed
program will not get the correct group set.
>Fix:
The patch below just avoids the problem by changing the order ot the calls
to getgrnam and getpwnam so the group information isn't overwritten. This
is not so much a fix as a hastily applied bit of sticky tape.
*** xinstall.c.orig Thu Jun 15 08:19:11 1995
--- xinstall.c Thu Jun 15 08:19:15 1995
***************
*** 123,132 ****
usage();
/* get group and owner id's */
- if (group && !(gp = getgrnam(group)))
- err("unknown group %s", group);
if (owner && !(pp = getpwnam(owner)))
err("unknown user %s", owner);
no_target = stat(to_name = argv[argc - 1], &to_sb);
if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) {
--- 123,132 ----
usage();
/* get group and owner id's */
if (owner && !(pp = getpwnam(owner)))
err("unknown user %s", owner);
+ if (group && !(gp = getgrnam(group)))
+ err("unknown group %s", group);
no_target = stat(to_name = argv[argc - 1], &to_sb);
if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) {
>Audit-Trail:
>Unformatted:
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