Commit Graph

1805 Commits

Author SHA1 Message Date
Nicolas François
7d5732cb49 Remove dead code.
* libmisc/find_new_sub_gids.c: Remove dead code.
	find_new_sub_gids() is always called with *range_count set to 0.
	It's more difficult to keep the subordinate GIDs and UIDs
	synchronized, than for the user's UID/GId because the count of
	subordinate IDs may differ.
	* libmisc/find_new_sub_uids.c: Likewise.
	* lib/subordinateio.h, lib/subordinateio.c: Remove APIs that are
	no more needed: is_sub_uid_range_free(), is_sub_gid_range_free(),
	is_range_free().
2013-08-15 17:30:19 +02:00
Nicolas François
1a8d386288 Subordinate IDs require 32bit uid_t/gid_t
* configure.in: Check if sizeof uid_t and gid_t is larger than 32
	bit to support subordinate IDs.
2013-08-14 20:22:15 +02:00
Nicolas François
0f26591422 Align coding style.
* lib/subordinateio.c: Avoid implicit conversion of pointers and
	integers to booleans.
	* lib/subordinateio.c: Added brackets.
2013-08-14 00:19:19 +02:00
Nicolas François
cd1bd8bf4c Add schematics with ranges to help reviews.
* lib/subordinateio.c: Add schematics with ranges to help reviews.
2013-08-14 00:19:19 +02:00
Nicolas François
b84b918464 Avoid dead branches.
* lib/subordinateio.c: Avoid dead branches.

Note: code is equivalent.
2013-08-14 00:19:19 +02:00
Nicolas François
00f573fce2 Fix copyright dates. 2013-08-13 23:13:26 +02:00
Nicolas François
9951b1f569 Fail in case arguments are provided after options.
* src/vipw.c: Fail in case arguments are provided after options.
	Debian#677812
2013-08-13 23:13:09 +02:00
Nicolas François
0094abea6e Fix count for ranges truncated in remove_range().
* lib/subordinateio.c: Fix count for ranges truncated in
	remove_range().
2013-08-13 22:29:16 +02:00
Nicolas François
8781aff637 Terminate the child before closing the PAM session.
* src/su.c: Terminate the child (if needed) before closing the PAM
	session. This is probably more correct, and avoid reporting
	termination from signals possibly sent by PAM modules (e.g. former
	versions of pam_systemd). Debian#670132
2013-08-13 19:48:53 +02:00
Nicolas François
a5e3dbb0e3 Reset caught variable when signal is handled by su.
* src/su.c: When a SIGTSTP is caught, reset caught to 0. There is
	no need to kill the child in such case after su is resumed. This
	remove the "Session terminated, terminating shell...
	...terminated." messages in such case.
2013-08-13 19:42:50 +02:00
Nicolas François
29bd7e1929 Document checks performed by newgidmap/newuidmap
* man/newgidmap.1.xml: Document the checks performed before
	setting the mapping in /proc.
	* man/newuidmap.1.xml: Likewise.
2013-08-13 19:38:41 +02:00
Nicolas François
e1a4b6e57b Document the semantic of ranges.
* libmisc/idmapping.h: Document what the upper and lower fields
	are in struct map_range.
	* man/newgidmap.1.xml: Document when the gid, gidlower and count
	argument are.
	* man/newuidmap.1.xml: Likewise for uid, uidlower and count.
2013-08-13 19:28:07 +02:00
Nicolas François
5884ba907c (shadow_random): Use long instead of size_t.
* libmisc/salt.c (shadow_random): Use long instead of size_t.
	Compatibility with size_t is easier to check since it's used for
	smaller numbers (salt size).
2013-08-13 19:16:24 +02:00
Nicolas François
64fe2f7db6 Add splint annotations.
* lib/groupmem.c: Add splint annotations. The added memset makes
	splint think data was allocated.
	* lib/pwmem.c: Likewise.
	* lib/sgroupio.c: Likewise.
	* lib/shadowmem.c: Likewise.
2013-08-13 19:13:45 +02:00
Nicolas François
3bdf723bab Improve documentation.
* man/login.defs.d/SUB_GID_COUNT.xml: Document that the behavior
	of useradd and newusers depends on the existence of /etc/subgid.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise for /etc/subuid.
2013-08-13 00:21:02 +02:00
Nicolas François
9126425a21 Improve error reporting.
* src/useradd.c: Change message in case of find_new_sub_uids /
	find_new_sub_gids failure. This complements the messages already
	provided by these APIs.
2013-08-13 00:13:12 +02:00
Nicolas François
bfbd83239e Fix handling of boundaries.
* lib/subordinateio.c: Fix handling of boundaries.
	* libmisc/find_new_sub_uids.c: Likewise.
	* libmisc/find_new_sub_gids.c: Likewise.
2013-08-13 00:11:24 +02:00
Nicolas François
d9d1bb4acb Fix removal of ranges.
* lib/subordinateio.c: Fix removal of ranges. The database needs
	to be marked as changed or commonio_close will discard any change.
2013-08-12 23:57:32 +02:00
Nicolas François
5d3a785c55 Manpages improvement for subordinate IDs.
* man/newusers.8.xml: Include documentation of SUB_GID_MIN,
	SUB_GID_MAX, SUB_GID_COUNT, SUB_UID_MIN, SUB_UID_MAX,
	SUB_UID_COUNT.
	* man/useradd.8.xml: Likewise.
	* man/usermod.8.xml: Likewise.
	* man/newusers.8.xml: Document usage of /etc/subgid /etc/subuid.
	* man/useradd.8.xml: Likewise.
	* man/userdel.8.xml: Likewise.
	* man/usermod.8.xml: Likewise.
	* man/newusers.8.xml: Add references to subgid(5) and subuid(5).
	* man/useradd.8.xml: Likewise.
	* man/userdel.8.xml: Likewise.
	* man/subgid.5.xml: Sort references alphabetically.
	* man/subuid.5.xml: Likewise.
	* man/subgid.5.xml: Add references to newusers(8), useradd(8),
	userdel(8), usermod(8), user_namespaces(7).
	* man/subuid.5.xml: Likewise.
2013-08-11 16:09:59 +02:00
Nicolas François
eeab0bebfa Sort references alphabetically.
* man/newgidmap.1.xml: Sort references alphabetically.
	* man/newuidmap.1.xml: Likewise.
2013-08-11 15:48:57 +02:00
Nicolas François
d611d54ed4 Allow disabling of subordinate IDs.
* configure.in: Add configure options --enable-subordinate-ids /
	--disable-subordinate-ids. Enabled by default.
	* lib/prototypes.h: Include <config.h> before using its macros.
	* lib/commonio.h, lib/commonio.c: Define commonio_append only when
	ENABLE_SUBIDS is defined.
	* lib/prototypes.h, libmisc/find_new_sub_gids.c,
	libmisc/find_new_sub_uids.c: Likewise.
	* lib/subordinateio.h, lib/subordinateio.c: Likewise.
	* libmisc/user_busy.c: Only check if subordinate IDs are in use if
	ENABLE_SUBIDS is defined.
	* src/Makefile.am: Create newgidmap and newuidmap only if
	ENABLE_SUBIDS is defined.
	* src/newusers.c: Check for ENABLE_SUBIDS to enable support for
	subordinate IDs.
	* src/useradd.c: Likewise.
	* src/userdel.c: Likewise.
	* src/usermod.c: Likewise.
	* man/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 only if ENABLE_SUBIDS is defined.
	* man/fr/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 (not translated yet).
	* man/generate_mans.mak: Add xsltproc conditionals
	subids/no_subids.
	* man/login.defs.d/SUB_GID_COUNT.xml: Add dependency on subids
	condition.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/usermod.8.xml: Document options for subordinate IDs and
	reference subgid(5) / subuid(5) depending on the subids condition.
2013-08-11 15:46:59 +02:00
Nicolas François
1fb1486c8a Ignore generated newgidmap and newuidmap 2013-08-11 14:48:39 +02:00
Nicolas François
d83866d006 Fix typo. 2013-08-11 00:53:50 +02:00
Nicolas François
14ebc92d8c Remove unused variable.
* libmisc/salt.c: Remove unused variable.
2013-08-10 00:11:52 +02:00
Nicolas François
45986f8dc8 Fix for Alioth#314271 (musl libc)
* libmisc/utmp.c: Add include files needed for getaddrinfo().
	See Alioth#314271
2013-08-07 02:18:43 +02:00
Mike Frysinger
561ba96ec7 check for ruserok existence
rlogin support is old school code, so newer C libraries drop support for
ruserok (like uClibc, optionally).  But shadow doesn't build with that,
so have it check for ruserok to optionally enable rlogin.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-08-07 01:44:24 +02:00
Nicolas François
cfad7327a5 Editorial changes to usermod(8)
* man/usermod.8.xml: Fix typos and wording.
	* man/usermod.8.xml: Add references to subgid(5) and subuid(5).
2013-08-07 01:36:10 +02:00
Nicolas François
316bc6b3f4 Fix wording: secondary -> subordinate.
* libmisc/find_new_sub_gids.c: Fix wording: secondary ->
	subordinate.
	* libmisc/find_new_sub_uids.c: Likewise.
2013-08-07 01:01:33 +02:00
Nicolas François
ac53650da5 Remove duplicate check.
* libmisc/find_new_sub_gids.c: Remove duplicate check (duplicate
	at least in its intent).
2013-08-06 23:59:09 +02:00
Nicolas François
94c52130be Fix typos.
* src/usermod.c: Fix typos.
2013-08-06 22:29:40 +02:00
Nicolas François
ee2b88b7b1 I find it clearer with the words in that order.
* man/subgid.5.xml: Reorder words.
	* man/subuid.5.xml: Likewise.
2013-08-06 22:25:08 +02:00
Nicolas François
1955170a14 Fix typos.
* man/subgid.5.xml: Fix typos.
	* man/subuid.5.xml: Likewise.
	* man/subgid.5.xml: Fix copy-paste errors from subuid.5.xml.
2013-08-06 22:22:57 +02:00
Nicolas François
9fdd176e45 Remove copy-pasted NOTE.
* man/newgidmap.1.xml: Remove copy-pasted NOTE.
	* man/newuidmap.1.xml: Likewise.
2013-08-06 21:01:53 +02:00
Nicolas François
bae65562ef Remove unused variables.
* lib/subordinateio.c: Remove unused variables.
2013-08-06 20:59:52 +02:00
Nicolas François
95d1e146b2 Fix typos.
* man/login.defs.d/SUB_GID_COUNT.xml: Fix typo.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/login.defs.d/SUB_UID_COUNT.xml: Fix copy-paste issue from
	SUB_GID_COUNT.
	* man/newgidmap.1.xml: Fix Typo.
	* src/useradd.c: Fix typos.
	* lib/subordinateio.c: Fix typos.
2013-08-06 20:59:13 +02:00
Nicolas François
fcb7222b1a Fix Debian bug #675824
* lib/groupmem.c (__gr_dup): Support libc which define other
	fields in struct group.
	* lib/pwmem.c: Likewise for struct passwd.
	* lib/shadowmem.c: Likewise for struct spwd.
	* lib/sgroupio.c: Apply same logic, even if this structure is
	defined internally.
2013-08-06 16:33:27 +02:00
Nicolas François
5d491ef9da Revert b10cba0e0a
The length of the concatenated 2 lines was correct.
2013-08-05 23:16:00 +02:00
Serge Hallyn
c0ce911b5e userns: add argument sanity checking
In find_new_sub_{u,g}ids, check for min, count and max values.

In idmapping.c:get_map_ranges(), make sure that the value passed
in for ranges did not overflow.  Couldn't happen with the current
code, but this is a sanity check for any future potential mis-uses.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:46 -05:00
Eric W. Biederman
673c2a6f9a newuidmap,newgidmap: New suid helpers for using subordinate uids and gids
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:46 -05:00
Serge Hallyn
2cffa14105 fix typo in subxid.5
login.defs, not logindefs.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:45 -05:00
Serge Hallyn
c485cfabd8 usermod: add v:w:V:W: to getopt
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:45 -05:00
Serge Hallyn
3b3c8001fe subordinateio: Fix subordinate_parse to have an internal static buffer
subordinate_parse is supposed to return a static structure that
represents one line in /etc/subuid or /etc/subgid.  I goofed and
failed to make the variable rangebuf that holds the username of
in the returned structure static.

Add this missing static specification.

Author: <Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:45 -05:00
Serge Hallyn
5f2e4b18f8 Add LIBSELINUX to newuidmap and newgidmap LDADD
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
2cc8c2c0dc newusers: Add support for assiging subordinate uids and gids.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
d5b3092331 usermod: Add support for subordinate uids and gids.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
89f7b0868c Add support for detecting busy subordinate user ids
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
87253ca906 useradd: Add support for subordinate user identifiers
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
7296cbdbfe userdel: Add support for removing subordinate user and group ids.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Eric W. Biederman
a8f26262cf Implement find_new_sub_uids find_new_sub_gids
Functions for finding new subordinate uid and gids ranges for use
with useradd.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
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