Commit Graph

29 Commits

Author SHA1 Message Date
Thorsten Kukuk
b52ce71c27 Add support for a vendor directory and libeconf
With this, it is possible for Linux distributors to store their
supplied default configuration files somewhere below /usr, while
/etc only contains the changes made by the user. The new option
--enable-vendordir defines where the shadow suite should additional
look for login.defs if this file is not in /etc.
libeconf is a key/value configuration file reading library, which
handles the split of configuration files in different locations
and merges them transparently for the application.
2019-10-05 22:17:49 -05:00
Jakub Hrozek
4aaf05d72e Flush sssd caches in addition to nscd caches
Some distributions, notably Fedora, have the following order of nsswitch
modules by default:
    passwd: sss files
    group:  sss files

The advantage of serving local users through SSSD is that the nss_sss
module has a fast mmapped-cache that speeds up NSS lookups compared to
accessing the disk an opening the files on each NSS request.

Traditionally, this has been done with the help of nscd, but using nscd
in parallel with sssd is cumbersome, as both SSSD and nscd use their own
independent caching, so using nscd in setups where sssd is also serving
users from some remote domain (LDAP, AD, ...) can result in a bit of
unpredictability.

More details about why Fedora chose to use sss before files can be found
on e.g.:
    https://fedoraproject.org//wiki/Changes/SSSDCacheForLocalUsers
or:
    https://docs.pagure.org/SSSD.sssd/design_pages/files_provider.html

Now, even though sssd watches the passwd and group files with the help
of inotify, there can still be a small window where someone requests a
user or a group, finds that it doesn't exist, adds the entry and checks
again. Without some support in shadow-utils that would explicitly drop
the sssd caches, the inotify watch can fire a little late, so a
combination of commands like this:
    getent passwd user || useradd user; getent passwd user
can result in the second getent passwd not finding the newly added user
as the racy behaviour might still return the cached negative hit from
the first getent passwd.

This patch more or less copies the already existing support that
shadow-utils had for dropping nscd caches, except using the "sss_cache"
tool that sssd ships.
2018-09-13 14:20:02 +02:00
Eric W. Biederman
f28ad4b251 Add backend support for suboridnate uids and gids
These files list the set of subordinate uids and gids that users are allowed
to use.   The expect use case is with the user namespace but other uses are
allowed.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
nekral-guest
2c24c012bd * lib/prototypes.h, lib/Makefile.am, po/POTFILES.in,
libmisc/copydir.c, lib/selinux.c: Move set_selinux_file_context()
	and reset_selinux_file_context() from libmisc/copydir.c to
	lib/selinux.c.
	* lib/commonio.c: Use set_selinux_file_context() and
	reset_selinux_file_context() instead of using the existing
	database SELinux context to set the context for the newly created
	files.
2011-12-09 22:13:02 +00:00
nekral-guest
daa8d1141e * lib/Makefile.am, lib/prototypes.h, lib/selinux.c,
lib/semanage.c, po/POTFILES.in: Move lib/selinux.c to
	lib/semanage.c.
2011-12-09 21:30:19 +00:00
nekral-guest
29050eadb5 * NEWS, src/userdel.c, man/userdel.8.xml: Add option -Z/--selinux-user.
* libmisc/system.c, lib/prototypes.h, libmisc/Makefile.am: Removed
	safe_system().
	* lib/selinux.c, po/POTFILES.in, lib/prototypes.h,
	lib/Makefile.am: Added helper functions for semanage.
	* README, src/useradd.c, src/usermod.c, src/userdel.c,
	configure.in: Use libsemanage instead of semanage.
2011-11-17 21:51:07 +00:00
nekral-guest
f870cc7eab Miscellaneous:
* lib/prototypes, libmisc/basename.c (Basename): Input is a
	constant string.
	* lib/prototypes.h, lib/spawn.h, lib/spawn.c, src/userdel.c,
	lib/nscd.c, lib/Makefile.am: Delete spawn.h. Move from spawn.h to
	prototypes.h.
	* src/userdel.c: Remove unused variables.
	* lib/nscd.c: Remove unused header files.
	* lib/nscd.c: Add the program name to error messages.
	* lib/nscd.c: Indicate when nscd does not terminate normally (signal).
	* lib/spawn.c: Updated header.
	* lib/spawn.c: Flush stdout and stderr to avoid inheriting from
	ongoing buffers.
	* lib/spawn.c: Avoid implicit conversion of pointer to boolean.
	* lib/spawn.c: Replace perror by a complete message.
	* lib/spawn.c: Continue to wait for the child if another child
	terminates.
	* lib/prototypes.h: The name field from cleanup_info_mod is a
	constant string. (username).
2011-09-18 21:02:43 +00:00
nekral-guest
fc0057ff35 2011-08-20 Jonathan Nieder <jrnieder@gmail.com>
* lib/Makefile.am: Added lib/spawn.c and lib/spawn.h.
	* lib/nscd.c, lib/spawn.c, lib/spawn.h: It is not possible to
	differentiate between an nscd failure, and a failure to execute
	due to no nscd with posix_spawn. Use our own run_command routine.
	* src/userdel.c: Use run_command()
2011-08-20 13:33:38 +00:00
nekral-guest
d7fa77f03b * lib/groupio.c, lib/sgroupio.c, lib/shadowio.c, lib/pwio.c: Check
entry validity before commits to databases.
	* libmisc/fields.c, libmisc/Makefile.am, lib/fields.c,
	lib/Makefile.am, po/POTFILES.in: fields.c moved from libmisc to
	lib.
2011-02-16 20:32:16 +00:00
nekral-guest
391a384715 2010-01-30 Paweł Hajdan, Jr. <phajdan.jr@gentoo.org>
* NEWS: Add support for TCB.
	* lib/tcbfuncs.h, lib/tcbfuncs.c, lib/Makefile.am: New library to
	support TCB.
	* lib/prototypes, libmisc/copydir.c (remove_tree): Add boolean
	parameter remove_root.
	* configure.in: Add conditional WITH_TCB.
	* src/userdel.c, src/usermod.c: Add support for TCB. Update call to
	remove_tree().
	* src/pwconv.c, src/pwunconv.c: Should not be used with TCB enabled.
	* src/vipw.c: Add support for TCB. Update call to remove_tree().
	* src/useradd.c: Add support for TCB. Open the shadow file outside
	of open_files().
	* src/chage.c: Add support for TCB.
	* src/Makefile.am: Install passwd sgid shadow when TCB is enabled.
	* lib/getdefs.c, man/vipw.8.xml, man/login.defs.5.xml,
	man/login.defs/TCB_AUTH_GROUP.xml, man/login.defs/USE_TCB.xml,
	man/login.defs/TCB_SYMLINKS.xml, man/generate_mans.mak,
	man/generate_mans.deps, man/Makefile.am: New configuration
	parameters: TCB_AUTH_GROUP, TCB_SYMLINKS, USE_TCB.
	* lib/shadowio.c, lib/commonio.c: Add support for TCB.
2010-03-04 18:11:13 +00:00
nekral-guest
496002abc9 * lib/Makefile.am, lib/get_pid.c, lib/getulong.c: Added get_pid()
and getulong().
2009-04-24 23:28:15 +00:00
nekral-guest
413bb19543 * lib/Makefile.am, lib/prototypes.h: Added sgetspent.c. 2009-04-10 22:35:43 +00:00
nekral-guest
84f5ca951c * lib/getdef.c: Use getlong instead of strtol/strtoul.
* libmisc/getlong, lib/getlong.c, libmisc/Makefile.am,
	lib/Makefile.am: getlong.c moved from libmisc/ to lib/.
2009-04-10 22:35:26 +00:00
nekral-guest
a1dd26d2d6 * libmisc/get_gid.c, libmisc/get_uid.c, libmisc/Makefile.am,
lib/get_gid.c, lib/get_uid.c, lib/Makefile.am: get_uid.c and
	get_gid.c moved from libmisc/ to lib/.
2009-03-21 20:24:37 +00:00
nekral-guest
8a1abbe80b * lib/Makefile.am: Do not link libshadow.la with the intl, crypt,
skey and md libraries...
* src/Makefile.am: ...Specify for each binary which library is
  required. skey and md are required for the binaries with
  authentication of the user (chfn, chsh, login, passwd, su). intl
  is required for all. mcrypt is required for user (chfn, chsh,
  login, passwd, su, sulogin) and group (newgrp, gpasswd)
  authentication and for the creation of passwords (chpasswd,
  chgpasswd, gpasswd, newusers, passwd).
2008-01-06 14:19:32 +00:00
nekral-guest
d6ee05ef93 Do not install the shadow library per default.
lib_LTLIBRARIES changed to noinst_LTLIBRARIES.
2007-12-26 09:18:45 +00:00
nekral-guest
dcedc12f36 Add forgotten files in the previous ChangeLog entry. 2007-11-18 23:20:02 +00:00
nekral-guest
8a78a8d68c [svn-upgrade] Integrating new upstream version, shadow (4.0.17) 2007-10-07 11:47:45 +00:00
nekral-guest
591830e43b [svn-upgrade] Integrating new upstream version, shadow (4.0.15) 2007-10-07 11:47:22 +00:00
nekral-guest
8451bed8b0 [svn-upgrade] Integrating new upstream version, shadow (4.0.13) 2007-10-07 11:47:01 +00:00
nekral-guest
e89f3546f2 [svn-upgrade] Integrating new upstream version, shadow (4.0.12) 2007-10-07 11:46:52 +00:00
nekral-guest
b48129fcbb [svn-upgrade] Integrating new upstream version, shadow (4.0.11) 2007-10-07 11:46:34 +00:00
nekral-guest
8e167d28af [svn-upgrade] Integrating new upstream version, shadow (4.0.8) 2007-10-07 11:46:07 +00:00
nekral-guest
0ee095abd8 [svn-upgrade] Integrating new upstream version, shadow (4.0.7) 2007-10-07 11:45:58 +00:00
nekral-guest
b0e078d9c8 [svn-upgrade] Integrating new upstream version, shadow (4.0.5) 2007-10-07 11:45:40 +00:00
nekral-guest
effd479bff [svn-upgrade] Integrating new upstream version, shadow (4.0.4) 2007-10-07 11:45:23 +00:00
nekral-guest
3bc4996775 [svn-upgrade] Integrating new upstream version, shadow (4.0.0) 2007-10-07 11:44:51 +00:00
nekral-guest
efd7efa9f1 [svn-upgrade] Integrating new upstream version, shadow (20000826) 2007-10-07 11:44:14 +00:00
nekral-guest
45c6603cc8 [svn-upgrade] Integrating new upstream version, shadow (19990709) 2007-10-07 11:44:02 +00:00