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- Notes on upgrading from an older release
- ========================================
-
- o Upgrading from a version prior to 1.6.8:
-
- Prior to sudo 1.6.8, if /var/run did not exist, sudo would put
- the timestamp files in /tmp/.odus. As of sudo 1.6.8, the
- timestamp files will be placed in /var/adm/sudo or /usr/adm/sudo
- if there is no /var/run directory. This directory will be
- created if it does not already exist.
-
- Previously, a sudoers entry that explicitly prohibited running
- a command as a certain user did not override a previous entry
- allowing the same command. This has been fixed in sudo 1.6.8
- such that the last match is now used (as it is documented).
- Hopefully no one was depending on the previous (buggy) beghavior.
-
- o Upgrading from a version prior to 1.6:
-
- As of sudo 1.6, parsing of runas entries and the NOPASSWD tag
- has changed. Prior to 1.6, a runas specifier applied only to
- a single command directly following it. Likewise, the NOPASSWD
- tag only allowed the command directly following it to be run
- without a password. Starting with sudo 1.6, both the runas
- specifier and the NOPASSWD tag are "sticky" for an entire
- command list. So, given the following line in sudo < 1.6
-
- millert ALL=(daemon) NOPASSWD:/usr/bin/whoami,/bin/ls
-
- millert would be able to run /usr/bin/whoami as user daemon
- without a password and /bin/ls as root with a password.
-
- As of sudo 1.6, the same line now means that millert is able
- to run run both /usr/bin/whoami and /bin/ls as user daemon
- without a password. To expand on this, take the following
- example:
-
- millert ALL=(daemon) NOPASSWD:/usr/bin/whoami, (root) /bin/ls, \
- /sbin/dump
-
- millert can run /usr/bin/whoami as daemon and /bin/ls and
- /sbin/dump as root. No password need be given for either
- command. In other words, the "(root)" sets the default runas
- user to root for the rest of the list. If we wanted to require
- a password for /bin/ls and /sbin/dump the line could be written
- thusly:
-
- millert ALL=(daemon) NOPASSWD:/usr/bin/whoami, \
- (root) PASSWD:/bin/ls, /sbin/dump
-
- Additionally, sudo now uses a per-user timestamp directory
- instead of a timestamp file. This allows tty timestamps to
- simply be files within the user's timestamp dir. For the
- default, non-tty case, the timestamp on the directory itself
- is used.
-
- Also, the temporary file used by visudo is now /etc/sudoers.tmp
- since some versions of vipw on systems with shadow passwords use
- /etc/stmp for the temporary shadow file.
-
- o Upgrading from a version prior to 1.5:
-
- By default, sudo expects the sudoers file to be mode 0440 and
- to be owned by user and group 0. This differs from version 1.4
- and below which expected the sudoers file to be mode 0400 and
- to be owned by root. Doing a `make install' will set the sudoers
- file to the new mode and group. If sudo encounters a sudoers
- file with the old permissions it will attempt to update it to
- the new scheme. You cannot, however, use a sudoers file with
- the new permissions with an old sudo binary. It is suggested
- that if have a means of distributing sudo you distribute the
- new binaries first, then the new sudoers file (or you can leave
- sudoers as is and sudo will fix the permissions itself as long
- as sudoers is on a local file system).
-