The third field in the /etc/shadow file (sp_lstchg) contains the date of
the last password change expressed as the number of days since Jan 1, 1970.
As this is a relative time, creating a user today will result in:
username:17238:0:99999:7:::
whilst creating the same user tomorrow will result in:
username:17239:0:99999:7:::
This has an impact for the Reproducible Builds[0] project where we aim to
be independent of as many elements the build environment as possible,
including the current date.
This patch changes the behaviour to use the SOURCE_DATE_EPOCH[1]
environment variable (instead of Jan 1, 1970) if valid.
[0] https://reproducible-builds.org/
[1] https://reproducible-builds.org/specs/source-date-epoch/
Signed-off-by: Chris Lamb <lamby@debian.org>
Previously, the allocation was optimized for an outdated
deployment style (that of /etc/group alongside nss_db). The issue
here is that this results in extremely poor performance when using
SSSD, Winbind or nss_ldap.
There were actually two serious bugs here that have been addressed:
1) Running getgrent() loops won't work in most SSSD or Winbind
environments, as full group enumeration is disabled by default.
This could easily result in auto-allocating a group that was
already in use. (This might result in a security issue as well, if
the shared GID is a privileged group).
2) For system groups, the loop was always iterating through the
complete SYS_GID_MIN->SYS_GID_MAX range. On SSSD and Winbind, this
means hundreds of round-trips to LDAP (unless the GIDs were
specifically configured to be ignored by the SSSD or winbindd).
To a user with a slow connection to their LDAP server, this would
appear as if groupadd -r was hung. (Though it would eventually
complete).
This patch changes the algorithm to be more favorable for LDAP
environments, at the expense of some performance when using nss_db.
Given that the DB is a local service, this should have a negligible
effect from a user's perspective.
With the new algorithm, we simply first iterate through all entries
in the local database with gr_next(), recording the IDs that are in
use. We then start from the highest presumed-available entry and
call getgrgid() to see if it is available. We continue this until
we come to the first unused GID. We then select that and return it.
If we make it through all the remaining IDs without finding a free
one, we start over from the beginning of the range and try to find
room in one of the gaps in the range.
The patch was originally written by Stephen Gallagher and applied
identically also to the user allocation by Tomáš Mráz.
Signed-off-by: Serge Hallyn <serge@hallyn.com>
Catch up with Automake's [1], which was part of v1.6b, cut 2002-07-28
[2]. Avoids:
$ autoreconf -v -f --install
...
libmisc/Makefile.am:4: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
...
src/Makefile.am:10: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
...
Consolidating with the earlier AM_CPPFLAGS avoids:
$ autoreconf -v -f --install
src/Makefile.am:72: warning: AM_CPPFLAGS multiply defined in condition TRUE ...
src/Makefile.am:10: ... 'AM_CPPFLAGS' previously defined here
autoreconf-2.69: Leaving directory `.'
[1]: http://git.savannah.gnu.org/cgit/automake.git/commit/?id=1415d22f6203206bc393fc4ea233123ba579222d
Summary: automake.in (generate_makefile): Suggest using AM_CPPFLAGS instead of INCLUDES
Date: 2002-07-09
[2]: http://git.savannah.gnu.org/cgit/automake.git/tag/?id=Release-1-6b
- Use an allocation of 65536 uids and gids to allow for POSIX-compliant
user owned namespaces.
- Don't allocate a uid/gid map to system users.
Unfortunately checking for --system isn't quite enough as some
distribution wrappers always call useradd without --system and take care
of choosing a uid and gid themselves, so also check whether the
requested uid/gid is in the user range.
This is taken from a patch I wrote for Ubuntu a couple years ago and
which somehow didn't make it upstream.
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
The number of ranges should be the ceiling of the number of arguments divided
by three.
Without this fix newuidmap and newgidmap always report and error and fail,
which is very much not what we want.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
* 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().
* 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.
* 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).
* 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.
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>
* libmisc/salt.c: random() max value is 2^31-1 (same as RAND_MAX
on GNU). As it is not clear whether on some systems the max value
can exceed this number and whether some systems have max values
which would be lower, we take this into account when defining the
salt size and number of rounds for SHA encrypted passwords. Higher
values are favored.
* libmisc/setupenv.c: xstrdup the static char* temp_pw_dir /
temp_pw_shell. That way we can continue to use pw_free() without
segving. Thanks to Serge Hallyn for the patch.
a salt that violates specs. On Linux, crypt() also fails with
DES/MD5 salts in FIPS140 mode. Rather than exit() on NULL returns
we send them back to the caller for appropriate handling.
enabled. This is not done by pam_lastlog. This was broken on
2011-07-23.
* NEWS, libmisc/utmp.c: Do not log in wtmp when PAM is enabled.
This is done by pam_lastlog.
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.
annotations.
* src/pwconv.c, src/pwunconv.c, src/grpconv.c, src/grpunconv.c:
Ignore return value of spw_rewind, pw_rewind, sgr_rewind, and
gr_rewind.
* lib/commonio.h: Both head and tail cannot be owned. Set tail as
dependent.
* src/expiry.c: Ignore return value of expire ().
* src/expiry.c: The catch_signals function does not use its sig
parameter.
* src/userdel.c: Last audit_logger parameter is a
shadow_audit_result, use SHADOW_AUDIT_FAILURE instead of 0.
po/POTFILES.in: Add process_root_flag() to process the --root
option and chroot so that the chroot config is used and changes
are applied to the chroot.
* 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).
invalid configuration.
* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Updated
comments.
* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Be more strict
on the loop stop conditions. Stop if we passed the limit, even if
the limit itself was never noticed.
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.
* libmisc/copydir.c: Missing parenthesis in comment.
* libmisc/chowndir.c: Fixed memory leak on failed realloc().
* libmisc/chowndir.c: Make sure the buffer for the path is large
enough.
* libmisc/remove_tree.c: Remove check for NULL before free().
selinux_file_context renamed set_selinux_file_context.
* lib/protoypes.h, libmisc/copydir.c, src/useradd.c:
Added reset_selinux_file_context.
* src/useradd.c: Check the return value of
set_selinux_file_context and reset_selinux_file_context.
* libmisc/copydir.c: Check the return value of
reset_selinux_file_context.
boolean.
* libmisc/basename.c: Avoid implicit conversion of pointer to
boolean.
* libmisc/basename.c, lib/prototypes.h (Basename): Return a
constant string.
* libmisc/basename.c, libmisc/obscure.c, lib/prototypes.h,
libmisc/xmalloc.c, libmisc/getdate.h, libmisc/system.c,
libmisc/getgr_nam_gid.c, libmisc/failure.c, libmisc/valid.c: Add
splint annotations.
* libmisc/chowndir.c: Avoid memory leak.
* libmisc/chowndir.c: Do not check *printf/*puts return value.
* libmisc/chowntty.c: Avoid implicit conversion between integer
types.
* libmisc/obscure.c: Return a bool when possible instead of int.
* libmisc/shell.c: Do not check *printf/*puts return value.
* libmisc/shell.c: Do not check execle return value.
* libmisc/setupenv.c: Avoid implicit conversion between integer
types.
* libmisc/xmalloc.c: size should not be zero to avoid returning
NULL pointers.
* libmisc/hushed.c: Do not check *printf/*puts return value.
* libmisc/system.c: Avoid implicit conversion of integer to
boolean. safe_system last argument is a boolean.
* libmisc/system.c: Check return value of dup2.
* libmisc/system.c: Do not check *printf/*puts return value.
* libmisc/system.c: Do not check execve return value.
* libmisc/salt.c: Do not check *printf/*puts return value.
* libmisc/loginprompt.c: Do not check gethostname return value.
* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Do not check
gr_rewind/pw_rewind return value.
* libmisc/ttytype.c: Limit the number of parsed characters in the
sscanf format.
* libmisc/ttytype.c: Test if a type was really read.
* libmisc/sub.c: Do not check *printf/*puts return value.
* libmisc/sub.c: Avoid implicit conversion of integer to boolean.
* src/userdel.c: Fix typo in comment.
* src/userdel.c: Avoid implicit conversion of boolean to integer.
* src/userdel.c: safe_system last argument is a boolean.
* src/newusers.c: Avoid implicit conversion of boolean to integer.
* src/newusers.c: Avoid implicit conversion of integer to boolean.
* src/usermod.c: Add brackets.
* src/usermod.c: Avoid implicit conversion of characters or
integers to booleans.
* src/vipw.c: Avoid implicit conversion of integer to boolean.
* src/su.c: Avoid implicit conversion of integer to boolean.
* src/su.c: Add brackets.
* src/useradd.c: Avoid implicit conversion of characters or
integers to booleans.
instead of an int.
* libmisc/obscure.c, libmisc/tz.c, src/passwd.c, lib/encrypt.c,
libmisc/copydir.c, lib/prototypes.h: Add splint annotations.
* libmisc/tz.c: Fix some const issues.
* libmisc/tz.c: Avoid multi-statements lines.
* libmisc/tz.c: Add brackets.
* libmisc/copydir.c: Do not check *printf/*puts return value.
* libmisc/copydir.c: Fail if we cannot set or reset the SELinux
fscreate context.
* libmisc/copydir.c: Use xmalloc instead of malloc.
* libmisc/copydir.c: Do not check lutimes return value
* src/vipw.c: Avoid implicit conversion of integer to boolean.
* src/su.c (iswheel): Return a bool instead of an int.
* src/passwd.c: Remove insert_crypt_passwd(). Use xstrdup instead.
* src/passwd.c: Return constant strings when sufficient.
* src/passwd.c: Do not check *printf/*puts return value.
* src/passwd.c: Avoid implicit conversion of character to boolean.
* src/passwd.c: Do not check sleep return value.
* src/sulogin.c: Do not check *printf/*puts return value.
* lib/encrypt.c: Do not check fprintf return value.
copy the extended attributes (the SELinux context is hence reset)
* src/usermod.c: Copy the extended attributes.
* src/useradd.c: Only reset the SELinux context.
libmisc/sulog.c, libmisc/hushed.c, libmisc/failure.c,
libmisc/loginprompt.c, libmisc/ttytype.c,
libmisc/pam_pass_non_interractive.c, src/userdel.c, src/login.c,
lib/commonio.c, lib/commonio.h: Fix some const issues.
* libmisc/motd.c: Avoid multi-statements lines.
* libmisc/motd.c: Support long MOTD_FILE.
* libmisc/list.c, lib/prototypes.h: Revert previous change.
dup_list and is_on_list are used with members as defined for the
group structure, and thus even if the list is not modified, the
list elements cannot be constant strings.
* libmisc/system.c: Avoid C++ comments.
* src/vipw.c: WITH_TCB cannot be tested inside a gettextized
string. Split the Usage string.
* lib/commonio.h: Re-indent.
* src/useradd.c: spool is a constant string.
* src/useradd.c: Set the new copy_tree's paramater 'copy_root' to false
2010-04-04 Nicolas François <nicolas.francois@centraliens.net>
* src/usermod.c: move_home() is only called if mflg is set.
* src/usermod.c: Fail is -m is provided but the old home directory
is not a directory.
* src/usermod.c: Use the previous improvement of copy_tree to
provide better error diagnosis.
* src/usermod.c: When rename() is used, also change the ownership.
* src/usermod.c: Do not change the ownership of the root directory
twice.
* src/usermod.c: When -u is provided, only change the ownership of
the home directory if it is a directory.
* src/usermod.c: Also change ownerships when -g is used.
2010-04-04 Nicolas François <nicolas.francois@centraliens.net>
* lib/prototypes.h, libmisc/copydir.c: Add the old UID and GID to
copy_tree to detect when ownership shall be changed.
* libmisc/copydir.c: Document the behavior when the IDs are set to
-1.
* lib/prototypes.h, libmisc/copydir.c (copy_tree): Add parameter
copy_root.
* libmisc/copydir.c: error() and ctx can be static.
* libmisc/copydir.c (copy_hardlink): Remove parameter src.
2010-04-04 Nicolas François <nicolas.francois@centraliens.net>
* libmisc/chowndir.c: Dynamically allocate memory to support
path longer than 1024 characters.
* libmisc/chowndir.c: Fix typos in documentation.
* libmisc/chowndir.c: Support and document the behavior when a old
or new ID is set to -1.
* libmisc/chowndir.c: Improved error detection when chown fails.
* libmisc/chowndir.c: Harmonize error handling strategy when an
error occurs: stop changing ownership as soon as an error was
detected.
no more used.
* lib/groupmem.c: Limit the scope of variable i.
* lib/shadow.c: Avoid implicit conversion of pointers and integers
to booleans.
* lib/shadow.c: Added brackets.
* libmisc/limits.c: Limit the scope of variable tmpmask.
* libmisc/copydir.c: Close opened file on failure.
* libmisc/loginprompt.c: Limit the scope of variable envc.
* libmisc/find_new_uid.c, libmisc/find_new_gid.c: Limit the scope
of variable id.
* NEWS, libmisc/limits.c, man/limits.5.xml: Add support for
infinite limits.
* NEWS, libmisc/limits.c, man/limits.5.xml: Add support for @group
syntax.
they are already specified in number of days since Epoch. Return
-2 in case of errors to support the specification of -1.
* src/usermod.c, src/useradd.c: Adapt to the new error value of
strtoday().
* src/chage.c: Remove isnum(). Adapt to the new error value of
strtoday(). Support for numerical dates is moved to strtoday().
* 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.
* NEWS, libmisc/find_new_gid.c, libmisc/find_new_uid.c: Since
system accounts are allocated from SYS_?ID_MIN to SYS_?ID_MAX in
reverse order, accounts are packed close to SYS_?ID_MAX if
SYS_?ID_MIN is already used but there are still dome gaps.
getpwent / getgrent for system accounts. Trying the low-IDs with
getpwuid / getgrgid should be more efficient on LDAP configured
systems with many accounts.
libmisc/xgetpwuid.c, libmisc/xgetgrgid.c, libmisc/xgetspnam.c: Do
not limit the size of the buffer to hold the group or user
structure. It used to be limited to 16k, which caused issues with
groups having many users.
lib/prototypes.h: Move user_busy() to libmisc/user_busy.c.
* NEWS, libmisc/user_busy.c: On Linux, do not check if an user is
logged in with utmp, but check if the user is running some
processes. If not on Linux, continue to search for an utmp record,
but make sure the process recorded in the utmp entry is still
running.
shell as a shell script when the direct execution of the user's
shell failed with ENOEXEC and the user's shell has a shebang. The
interpreter might not be the right one. Executing the user's
shell with sh -c might be better, but I'm not sure we should try
harder when there is a failure. Note: The removed code was only
included #ifndef __linux__.
with a NULL argument.
* src/useradd.c: Replace PATH_MAX by a fixed constant. The buffer
was not meant as a storage for a path.
* src/useradd.c, src/newusers.c, src/chpasswd.c: Better detection
of fgets errors. Lines shall end with a \n, unless we reached the
end of file.
* libmisc/copydir.c: Avoid PATH_MAX. Support file paths with any
length. Added readlink_malloc().
libmisc/pam_pass_non_interractive.c, libmisc/Makefile.am: Renamed.
* libmisc/pam_pass_non_interractive.c, lib/prototypes.h:
non_interactive_password and non_interactive_pam_conv do not need
to be externally visible.
* libmisc/pam_pass_non_interractive.c: Added declaration of
ni_conv.
* libmisc/pam_pass_non_interractive.c: Only compile ifdef USE_PAM.
* libmisc/pam_pass_non_interractive.c, lib/prototypes.h:
Added do_pam_passwd_non_interractive().
* src/chpasswd.c: Use do_pam_passwd_non_interractive().
* libmisc/chowntty.c, libmisc/rlogin.c, libmisc/sub.c,
src/newusers.c, libmisc/sulog.c, libmisc/system.c, src/logoutd.c,
src/groups.c, src/id.c, lib/encrypt.c, libmisc/audit_help.c,
libmisc/limits.c: Return EXIT_FAILURE instead of 1, and
EXIT_SUCCESS instead of 0.
* libmisc/audit_help.c: Replace an fprintf() by fputs().
* libmisc/audit_help.c: Remove documentation of the audit_logger
returned values. The function returns void.
* libmisc/system.c: Only return status if waitpid succeeded.
Return -1 otherwise.
* libmisc/copydir.c: Added assert to help splint.
* libmisc/copydir.c: Free allocated structures in cas of failure.
* libmisc/copydir.c: Avoid implicit conversion of pointers to
booleans.
* libmisc/copydir.c: Use buffers of size PATH_MAX instead of 1024
for filenames.
* libmisc/copydir.c: Use fchmod and fchown to change the mode of
the opened file.
* libmisc/copydir.c: Indicate the mode to open(), even if we chmod
later.
limit with getlog() / getulong(). This also means, in case of
non-PAM enabled systems, that the umask specified on the GECOS
fields should start with a 0 if specified in octal. (it used to be
force to octal). Do the appropriate cast and range checking.
* libmisc/setupenv.c: Added brackets and parenthesis.
* libmisc/setupenv.c: Ignore the return value of fclose (file
opened read-only)
* libmisc/setupenv.c: Ignore the return value of puts().
* libmisc/setupenv.c:Avoid implicit conversion of pointers to
booleans.
* libmisc/age.c: Added brackets and parenthesis.
* libmisc/age.c: Ignore the return value of fclose (file opened
read-only)
* libmisc/age.c: Ignore puts() return value.
* libmisc/age.c: Use exit(EXIT_FAILURE) instead of exit(1).
* libmisc/age.c: Avoid assignments in comparisons.
used_gids.
* libmisc/find_new_gid.c: Use getdef_ulong and cast to git_t to
get GID values.
* libmisc/find_new_gid.c: Use UL as a prefix for ulong values.
* libmisc/find_new_uid.c: Likewise.
default to 32.
* libmisc/chkname.c: Use USER_NAME_MAX_LENGTH.
* src/login.c: Use USER_NAME_MAX_LENGTH instead of the default 32.
username also needs to be bigger than USER_NAME_MAX_LENGTH because
it has to be nul-terminated.
of global utent/utxent variables. Only reuse the ut_id and maybe
the ut_host fields from utmp.
* lib/prototypes.h, libmisc/utmp.c: Removed checkutmp(),
setutmp(), setutmpx().
* lib/prototypes.h, libmisc/utmp.c: Added get_current_utmp(),
prepare_utmp(), prepare_utmpx(), setutmp(), setutmpx().
* libmisc/utmp.c (is_my_tty): Only compare the name of the utmp
line with ttyname(). (No stat of the two terminals to compare the
devices).
* libmisc/utmp.c: Use getaddrinfo() to get the address of the
host.
* configure.in: Check for getaddrinfo().
* configure.in: Use AC_CHECK_MEMBERS to check for the existence of
fields in the utmp/utmpx structures.
* configure.in: Reject systems with utmpx support but no ut_id
field in utmp. This could be fixed later if needed.
* src/login.c: Use the new utmp functions. This also simplifies
the failtmp() handling.
* src/login.c: passwd_free() renamed to pw_free() and
shadow_free() renamed to spw_free()
username as first parameter of failtmp to avoid issues with
non-null terminated ut_user, unavailability of ut_user, incomplete
username (that should not happen currently).
SELinux user for user's login.
* NEWS, src/usermod.c, man/usermod.8.xml: Likewise.
* libmisc/system.c, libmisc/Makefile.am, lib/prototypes.h: Added
safe_system(). Used to run semanage.
* lib/prototypes.h, libmisc/copydir.c: Make a
selinux_file_context() an extern function.
* libmisc/copydir.c: Reset SELinux to create files with default
contexts at the end of copy_tree().
* NEWS, src/userdel.c: Delete the SELinux user mapping for user's
login.
never set ifndef USE_PAM. Change the prototype of setup_uid_gid()
when USE_PAM is not defined. This permits to remove add_groups
from PAM builds. setup_uid_gid is already subject to
HAVE_INITGROUPS.
ifndef USE_PAM.
* lib/prototypes.h: Remove the declaration of add_cons_grps(). The
function does not exist.
* libmisc/age.c (setup_uid_gid): is_console is never set ifndef
USE_PAM. Change the prototype of setup_uid_gid() when USE_PAM is
not defined. This permits to remove add_groups from PAM builds.
setup_uid_gid is already subject to HAVE_INITGROUPS.
* libmisc/pwd2spwd.c (pwd_to_spwd): pwd_to_spwd() is not used in
PAM builds.
src/passwd.c, src/pwck.c, src/pwconv.c, src/useradd.c,
src/usermod.c: On Jan 01, 1970, do not set the sp_lstchg field to
0 (which means that the password shall be changed during the next
login), but use -1 (password aging disabled).
* src/passwd.c: Do not check sp_min if sp_lstchg is null or -1.
messages not related to an account.
* lib/prototypes.h, libmisc/cleanup.c, libmisc/cleanup_group.c,
libmisc/cleanup_user.c, libmisc/Makefile.am: Added stack of
cleanup functions to be executed on exit.
* NEWS, src/groupadd.c, src/groupdel.c, src/groupmod.c: Only
report success to audit and syslog when the changes are committed
to the system. Do not log failure for on-memory changes to audit
or syslog. Make sure failures and inconsistencies will be reported
in case of unexpected failures (e.g. malloc failures). Only
specify an audit message if it is not implicitly implied by the
type argument. Removed fail_exit (replaced by atexit(do_cleanups)).
configure option. The configure behavior encoded is:
<no option> -> default of 16 (like today);
--with-group-name-max-length -> default of 16;
--without-group-name-max-length -> no max length;
--with-group-name-max-length=n > max is set to n.
utmp.c to chowntty.c. checkutmp() now only uses an existing utmp
entry if the pid matches and ut_line matches with the current tty.
This fixes a possible DOS when entries can be forged in the utmp
file.
* libmisc/chowntty.c, src/login.c, lib/prototypes.h: Remove the
tty argument from chown_tty. chown_tty always changes stdin and
does not need this argument anymore.
* src/pwck.c: Only unlock files if they were locked before (e.g.
not in read-only mode).
* src/pwck.c: Quote the username in error messages (harmonization
with other messages).
* libmisc/find_new_gid.c: Fixed typo (s/grp->gr_gid/group_id/).
* libmisc/find_new_gid.c: Likewise.
Thanks to Peter Vrabec.
* NEWS, libmisc/find_new_gid.c, libmisc/find_new_uid.c: Build an
index of used IDs to avoid a database request for each id in the
allowed range (when the highest allowed ID is already used).
This speedups the addition of users or groups when the highest
allowed ID is already used. The additional memory usage of the
tools should be acceptable when UID_MAX/SYS_UID_MAX are set to a
reasonable number.
undefining some configuration macros when the file is included
multiple times.
* libmisc/xgetXXbyYY.c, libmisc/xgetpwnam.c, libmisc/xgetpwuid.c,
libmisc/xgetgrgid.c, libmisc/xgetgrnam.c, libmisc/xgetspnam.c:
Include <config.h> from teh compiled C file, not the included
getXXbyYY.c.
src/newusers.c, src/pwconv.c, src/chpasswd.c, src/logoutd.c,
src/chfn.c, src/groupmems.c, src/usermod.c, src/pwunconv.c,
src/expiry.c, src/groupdel.c, src/chgpasswd.c, src/useradd.c,
src/su.c, src/groupmod.c, src/passwd.c, src/pwck.c,
src/groupadd.c, src/chage.c, src/login.c, src/grpconv.c,
src/groups.c, src/grpunconv.c, src/chsh.c: Prog is now global (not
static to the file) so that it can be used by the helper functions
of libmisc.
* lib/prototypes.h: Added extern char *Prog.
* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Indicate the
program name with the warning.
shadow_audit_result for the result argument of audit_logger().
This permits stronger type checking and a better readability of
the results (SHADOW_AUDIT_FAILURE/SHADOW_AUDIT_SUCCESS constants).
* src/groupadd.c, src/groupdel.c, src/useradd.c, src/userdel.c:
Use the SHADOW_AUDIT_FAILURE/SHADOW_AUDIT_SUCCESS results instead
of 0 or 1 in audit_logger().
* configure.in, libmisc/copydir.c: futimes() and lutimes() are not
standard. Check if they are implemented before using them. Do not
set the time of links if lutimes() does not exist, and use
utimes() as a replacement for futimes().
the list, not adduser. This fixes a segmentation fault for every
call of groupmems -d.
* libmisc/list.c: Add assertions to help identifying these issues.
* libmisc/list.c: Avoid implicit conversion of pointers to
booleans.
booleans.
* libmisc/env.c: Add brackets and parenthesis.
* libmisc/env.c: Ignore the return value of puts() and fputs().
* libmisc/env.c: Avoid multi-statements lines.
booleans.
* libmisc/utmp.c: Add brackets and parenthesis.
* libmisc/utmp.c: Exit with the EXIT_FAILURE status code in case
of failure.
* libmisc/utmp.c: Avoid assignments in comparisons.
* lib/prototypes.h, libmisc/utmp.c: Change setutmp()'s prototype
to return an int because pututline() and pututxline() may fail.
* libmisc/limits.c: Avoid implicit conversion of pointers /
integers to booleans.
* libmisc/limits.c: Ignore the return value of umask(). We will
never return to the original umask.
* libmisc/limits.c: Avoid multi-statements lines.
* libmisc/limits.c: Added default to a switch(). Report invalid
limit strings to syslog.
* libmisc/limits.c: Ignore the return value of fclose().
/etc/limits is open read-only.
* libmisc/limits.c: Ignore the return value of fputs() and
sleep().
* libmisc/limits.c: Check the return value of nice() and
set_filesize_limit(), and report errors to syslog.
* libmisc/ulimit.c, lib/prototypes.h: Return failures of
set_filesize_limit(). Change the prototype to return an int
instead of void.
libmisc/find_new_uid.c, libmisc/Makefile.am, lib/prototypes.h:
Split find_new_ids.c into find_new_gid.c and find_new_uid.c to
ease the description of login.defs variables in the different
tools.
reading or writing at an unspecified location. Log to syslog in
case of failure when reading a faillog entry or writing in
faillog or btmp.
* libmisc/failure.c: Check if the file exist before opening it.
* libmisc/failure.c: Log failures of open() and close() when
necessary.
prototypes.
* libmisc/copydir.c: Use a size_t for the length of strings.
* libmisc/copydir.c: Cast the return value of malloc().
* libmisc/copydir.c: The size argument of write() is a size_t.
* libmisc/log.c: Add brackets and parenthesis.
* libmisc/log.c: read() returns a ssize_t (note size_t).
* libmisc/log.c: Avoid implicit conversion of pointers to
booleans.
* libmisc/log.c: Ignore return value of time() when use with a
non NULL argument.
* libmisc/age.c: Avoid implicit conversion of pointers to
booleans.
* libmisc/age.c: Avoid assignments in comparisons.
* libmisc/age.c: Ignore the return value of printf(), puts(),
fputs() and fflush().
* libmisc/age.c: Add brackets and parenthesis.
* libmisc/age.c: Cast the return value of time() to long and
converted to a date.
