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.
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().
unlink() in case of failure of fopen_set_perms() or
create_backup().
* lib/commonio.c: Should the backup file be unlink'ed in case of
failure of create_backup()?
* 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.
lib/pwio.c, lib/pwio.h, lib/shadowio.c, lib/shadowio.h: Added
splint annotations. The *_locate() and *_next() functions
currently return an observer. As the structure are often modified
by the caller, it could maybe be changed to exposed later. (and
non-const).
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()
* lib/shadowio.c: Use spw_free() for shadow_free().
* lib/groupmem.c: Added gr_free().
* lib/groupio.c: Use gr_free() for group_free().
* lib/pwmem.c: Include define.h before prototypes.h
* lib/pwmem.c: Added pw_free().
* lib/pwio.c: Use pw_free() for passwd_free().
* lib/sgroupio.c: Added sgr_free().
* lib/sgroupio.c: Use sgr_free() for gshadow_free().
* lib/prototypes.h: Added gr_free(), pw_free(), sgr_free(),
spw_free().
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.
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.
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)).
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().
Include <sys/types.h> before <pwd.h> and <grp.h>. It is necessary
for the definition of uid_t and gid_t.
* lib/pwmem.c: do not include <pwd.h>, "pwio.h" is sufficient
here.
lib/sgroupio.c, lib/sgroupio.h, lib/shadowio.c, lib/shadowio.h:
Added *_dbname() functions to retrieve the name of the databases.
* lib/groupio.c, lib/groupio.h, lib/pwio.c, lib/pwio.h,
lib/sgroupio.c, lib/sgroupio.h, lib/shadowio.c, lib/shadowio.h:
*_name() functions renamed *setname().
* src/grpck.c, src/pwck.c: Likewise.
* lib/groupio.h, lib/pwio.h, lib/sgroupio.h, lib/shadowio.h: Added
the name of the arguments to the prototypes.
* src/chage, src/chfn.c, src/chgpasswd.c, src/chpasswd.c,
src/chsh.c, src/gpasswd.c, src/groupadd.c, src/groupdel.c,
src/groupmod.c, src/grpck.c, src/grpconv.c, src/grpunconv.c,
src/newusers.c, src/passwd.c, src/pwck.c, src/pwconv.c,
src/pwunconv.c, src/useradd.c, src/userdel.c, src/usermod.c:
Harmonize the erro & syslog messages in case of failure of the
*_lock(), *_open(), *_close(), *_unlock(), *_remove() functions.
* src/chgpasswd.c, src/chpasswd.c, src/usermod.c: Avoid
capitalized messages.
* src/chpasswd.c, src/useradd.c, src/usermod.c: Harmonize messages
in case of inexistent entries.
* src/usermod.c: Harmonize messages in case of already existing
entries.
* src/newusers.c, src/useradd.c: Simplify PAM error handling.
* src/useradd.c: Report failures to unlock files (stderr, syslog,
and audit). But do not fail (continue).
* src/useradd.c (open_files): Do not report to syslog & audit
failures to lock or open the databases. This might be harmless,
and the logs were not already informed that a change was
requested.
* src/usermod.c: It's not the account which is unlocked, but its
password.
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.
booleans.
* lib/defines.h: Ignore return values of setlocale() except the
first call.
* lib/defines.h: Fix a splint observer warning by using an
intermediate variable (old_locale).
value of spwd.sp_flag.
* lib/shadow.c: Add brackets.
* lib/shadow.c: Avoid implicit conversion of pointers to
booleans.
* lib/shadow.c: The size argument of fgets is an int, not a
size_t.
* lib/gshadow.c: Remove __setsgNIS() -never used).
* lib/gshadow.c: Avoid multi-statements lines.
* lib/gshadow.c: Avoid assignments in comparisons.
* lib/gshadow.c: ptr[nelem] is a string. Initialize it to NULL
instead of '\0'.
* lib/gshadow.c: Add brackets and parenthesis.
* lib/gshadow.c: The size argument of strncpy is a size_t and the
size argument of fgets is an int.
* lib/getdef.c: Added TODOs because of lack of error checking.
* lib/getdef.c: The size argument of fgets is an int, not a
size_t.
* lib/getdef.c: Avoid multi-statements lines.
might be defined in this header file.
* lib/defines.h: Prefer checking if HAVE_LOCALE_H or ENABLE_NLS
are defined (rather than set to non 0).
* lib/defines.h: The dummy implementations of bindtextdomain() and
textdomain() should return a pointer. Return NULL instead of
/* empty */
* lib/defines.h: Define SHADOW_SP_FLAG_UNSET, to be used for the
initialization of sp_flag field of the shadow structures.
* lib/defines.h: Define LC_ALL, needed even if HAVE_LOCALE_H is
not defined.
libmisc/loginprompt.c, libmisc/ttytype.c, libmisc/tz.c,
src/login_nopam.c, src/chpasswd.c, src/chgpasswd.c, lib/port.c:
The size argument of fgets is an int, not a size_t.
* libmisc/loginprompt.c: Ignore the return value from signal()
when the signal handlers are restored.
* src/chpasswd.c: Cast the return value of time() to a long
integer.
* src/chpasswd.c: Use the SCALE macro instead of (24L * 3600L)
for the values to be set in /etc/shadow.
* lib/nscd.c: Always warn when the nscd cache cannot be flushed.
* lib/nscd.c: Avoid assignments in comparisons.
* lib/nscd.c: Ignore the return value of fputs() when printing
errors.
* lib/port.c: Change isttytime() prototype to return a bool.
* lib/port.c: Ignore the return value of fclose () (file open
read-only).
* lib/port.c: Avoid multi-statements lines.
* lib/sgroupio.c: Add brackets.
* lib/sgroupio.c: Avoid implicit conversion of pointers / integers to booleans.
* lib/sgroupio.c: The changed, isopen, locked, and readonly fields of the db are booleans.
* lib/sgroupio.h, lib/sgroupio.c: sgr_file_present returns a bool.
* lib/sgroupio.h: Add protection against multiple inclusions.
* lib/sgroupio.c: Add brackets.
* lib/sgroupio.c: Avoid implicit conversion of pointers / integers to booleans.
* lib/sgroupio.c: The changed, isopen, locked, and readonly fields of the db are booleans.
* lib/sgroupio.h, lib/sgroupio.c: sgr_file_present returns a bool.
* lib/sgroupio.h: Add protection against multiple inclusions.
* lib/port.c: Avoid multiple statement on the same line.
* lib/port.c: Add brackets and parenthesis.
* lib/port.c: Avoid assignments in comparisons.
* lib/port.c: Fix typo comparision -> comparison (in comment).
* lib/commonio.h: Include defines.h to get the definition of bool.
* lib/commonio.h: commonio_present returns a bool
* lib/commonio.c: Implement above changes.
* lib/commonio.c: add argument names in prototypes.
* lib/commonio.c: name_is_nis returns a bool.
* lib/commonio.c: nscd_need_reload is a bool.
* lib/commonio.c: Improve types (use size_t / pid_t when needed instead of int).
* lib/commonio.c: Avoid assignments in comparisons.
* lib/commonio.c: Add brackets and parenthesis.
* lib/commonio.c: Avoid implicit conversion of pointers / integers to booleans
* lib/commonio.c: The return values of utime is not checked on purpose.
Files with no license use the default 3-clauses BSD license. The copyright
were mostly not recorded; they were updated according to the Changelog.
"Julianne Frances Haugh and contributors" changed to "copyright holders
and contributors".
removed is used by different entries (like commonio_update does).
* NEWS: This fix the behavior of groupdel when the system is not
configured to support split group but different group entries
have the name of the group to be deleted.
find_new_uid() and find_new_gid(). They work the same way as the functions
with the same name of useradd or groupadd, except that they check in the
local database to make sure an ID was not reserved in an uncommitted
change (this is needed to be used in newusers), they report a status
instead of calling exit(), and they can receive a preferred ID. They
should later support system IDs. This should be a little bit slower, but
not too much (if the database is not open the checks against the local
database will exit immediately, and if it is already open, all the checks
will be done regarding the data in memory).
Daubert for the patch.
* libmisc/salt.c: Include <stdio.h>, needed for stderr and printf
functions.
* lib/encrypt.c: Include <stdio.h>, needed for perror, stderr and
printf functions
* src/usermod.c: sgr_locked exists only if SHADOWGRP is defined.
* src/chgpasswd.c: Only check is the gshadow file exists if
SHADOWGRP is defined.
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).
SETXXENT_RET, and SETXXENT_TEST. They were used by the now
removed pwent.c and grent.c.
* Remove the definition of PASSWD_PAG_FILE,
GROUP_PAG_FILE, SHADOW_PAG_FILE, and SGROUP_PAG_FILE. They are
never used.
* Don't include "snprintf.h". The file does not
exist in shadow.
* Add new macro unused to tag unused parameters.
lib/sgetpwent.c: Include "prototypes.h" to make
sure the exported prototypes are the ones used for the definition
of functions.
* lib/prototypes.h: Added prototypes for __gr_del_entry(),
__gr_get_db(), __gr_get_head(), __gr_set_changed(), __gr_dup(),
__pw_del_entry(), __pw_get_db(), __pw_get_head(), __pw_dup(),
sgetgrent(), sgetpwent(), __sgr_del_entry(), __sgr_dup(),
__sgr_get_head(), __sgr_set_changed(), __spw_get_head(),
__spw_del_entry(), __spw_dup().
* lib/prototypes.h: Removed prototype for is_listed().
* lib/prototypes.h: Added name of the check_su_auth()'s parameters.
* lib/groupio.h: Removed prototypes for __gr_dup() and
__gr_set_changed().
* lib/sgroupio.c: Removed prototypes for putsgent(), sgetsgent(),
and __gr_get_db().
* lib/sgroupio.h: Removed prototypes for __sgr_dup() and
__sgr_set_changed().
* lib/shadowio.c: Removed prototype for __pw_get_db().
* lib/pwio.c: Removed prototype for sgetpwent() and putpwent().
* lib/shadowio.h: Removed prototypes for __spw_dup() and
__spw_set_changed().
* lib/pwio.h: Removed prototypes for __pw_dup() and
__pw_set_changed().
* lib/commonio.h: Add protection against multiple inclusions.
* lib/prototypes.h: Include commonio.h (needed for the
__xx_del_entry() functions).
* lib/prototypes.h: Typo: login.c -> loginprompt.c
* src/login.c: Remove declaration of dolastlog().
* libmisc/log.c: dolastlog() should not have been changed to static.
Include prototypes.h instead.
and "pwauth.h" only when compiled without PAM support.
* src/chfn.c, src/chsh.c: Do not include <shadow.h>
* lib/commonio.c: Do not include <shadow.h>. Do not include
<pwd.h>. Include "nscd.h" instead of <nscd.h>.
* configure.in: Do not check if shadow.h exist, but make sure it
exists.
* libmisc/pwdcheck.c, src/chfn.c, src/chsh.c, lib/defines.h,
lib/shadowmem.c, lib/shadowio.c, lib/commonio.c:
HAVE_SHADOW_H is no more needed (shadow.h should always exist).
gid parameters can be set to -1 to indicate that the original
owners must be kept. Change the types from uid_t/gid_t to a
long int (signed).
* libmisc/copydir.c: Change the copy_entry(), copy_dir(),
copy_symlink(), copy_special(), and copy_file() prototypes
accordingly.
* lib/prototypes.h: Add the parameters' name for the
libmisc/copydir.c functions.
* libmisc/Makefile.am, lib/prototypes.h, libmisc/yesno.c, src/grpck.c,
src/pwck.c: move yes_or_no() from grpck/pwck to a separate
libmisc/yesno.c (with a read_only argument).
* libmisc/fields.c, libmisc/yesno.c: Make sure stdout is flushed before
reading the user's answer.
password longer than 13 chars. This protects against the GNU crypt() which
does not return NULL if the algorithm is not supported, and return a DES
encrypted password.
variable: MAX_MEMBERS_PER_GROUP. Used for the split groups support.
* lib/commonio.c, lib/commonio.h: Add an open_hook and close_hook
operation. They are called after the database is actually opened
and parse, or before it is closed.
* lib/groupio.c: Add an open_hook to merge split groups, and an
close group to split groups if MAX_MEMBERS_PER_GROUP is set.
This fixes gpasswd and chgpasswd when split groups are used.
* lib/sgroupio.c, lib/shadowio.c, lib/pwio.c: No open or close
hooks for these databases. (unsure about what should be the gshadow
behavior for split groups)
SHA256, and SHA512 exactly (not only the first 3/6 chars).
* libmisc/salt.c (SHA_salt_rounds): Set rounds to the specified
prefered_rounds value, if specified.
* src/gpasswd.c, libmisc/salt.c: Fix compilation warnings (use
size_t for lengths).
* src/chpasswd.c, src/chgpasswd.c: Add missing parenthesis.
crypt_make_salt to force the crypt method and number of rounds.
* libmisc/salt.c: Add parameter to SHA_salt_rounds to force the
number of rounds.
* libmisc/salt.c, lib/getdef.c: ENCRYPT_METHOD and MD5_CRYPT_ENAB
are needed also when USE_PAM (e.g. for chpasswd).
* src/newusers.c, src/gpasswd.c: Use the new crypt_make_salt prototype.
* src/chpasswd.c, src/chgpasswd.c: Add option -c, --crypt-method
and -s, --sha-rounds to specify the crypt method and number of
rounds in case of one of the SHA methods. The new prototype of
crypt_make_salt simplifies the handling of -m, --md5.
bytes).
* lib/getdef.c, etc/login.defs: Add definitions for
SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS.
* libmisc/salt.c: Use SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS
to add a random number of rounds if needed.
shadow-4.0.18.1-sha256.patch. Thanks to Peter Vrabec. Hardly no changes
except re-indent and changes related to recent modifications (max_salt_len
in crypt_make_salt). Changes in lib/defines.h not applied (definition of
ENCRYPTMETHOD_SELECT). I will add a configure check or flag.
* src/login.c: "dereferencing type-punned pointer will break
strict-aliasing rules", add a variable indirection: ptr_pam_user.
* lib/commonio.c: do not initialize the sb stat structure.
* lib/pwio.c, lib/shadowio.c, lib/sgroupio.c, lib/groupio.c:
initialize the security context if WITH_SELINUX.
* lib/nscd.c: The service argument is not const (used in the exec*
parameters). This matches with the prototype definition.
* src/groupmems.c: Avoid ++i when i is also used in the same line.
* src/newusers.c: i is positive every time it is compared. Add
cast to unsigned int.
* src/nologin.c: Use a main() prototype with no arguments.
* libmisc/getdate.y: Initialize the type and value fields of the
terminating entry for each TABLE.
* libmisc/tz.c: Use "TZ=CST6CDT" as the default timezone.
libmisc/xgetXXbyYY.c, libmisc/xgetpwnam.c, libmisc/xgetpwuid.c,
libmisc/xgetgrnam.c, libmisc/xgetgrgid.c, libmisc/xgetspnam.c:
Added functions xgetpwnam(), xgetpwuid(), xgetgrnam(),
xgetgrgid(), and xgetspnam(). They allocate memory for the
returned structure and are more robust to successive calls. They
are implemented with the libc's getxxyyy_r() functions if
available.
* libmisc/limits.c, libmisc/entry.c, libmisc/chowntty.c,
libmisc/addgrps.c, libmisc/myname.c, libmisc/rlogin.c,
libmisc/pwdcheck.c, src/newgrp.c, src/login_nopam.c,
src/userdel.c, src/lastlog.c, src/grpck.c, src/gpasswd.c,
src/newusers.c, src/chpasswd.c, src/chfn.c, src/groupmems.c,
src/usermod.c, src/expiry.c, src/groupdel.c, src/chgpasswd.c,
src/su.c, src/useradd.c, src/groupmod.c, src/passwd.c, src/pwck.c,
src/groupadd.c, src/chage.c, src/login.c, src/suauth.c,
src/faillog.c, src/groups.c, src/chsh.c, src/id.c: Review all the
usage of one of the getpwnam(), getpwuid(), getgrnam(),
getgrgid(), and getspnam() functions. It was noticed on
http://bugs.debian.org/341230 that chfn and chsh use a passwd
structure after calling a pam function, which result in using
information from the passwd structure requested by pam, not the
original one. It is much easier to use the new xget... functions
to avoid these issues. I've checked which call to the original
get... functions could be left (reducing the scope of the
structure if possible), and I've left comments to ease future
reviews (e.g. /* local, no need for xgetpwnam */).
Note: the getpwent/getgrent calls should probably be checked also.
* src/groupdel.c, src/expiry.c: Fix typos in comments.
* src/groupmod.c: Re-indent.
* libmisc/Makefile.am, lib/groupmem.c, lib/groupio.c, lib/pwmem.c,
lib/pwio.c, lib/shadowmem.c, lib/shadowio.c: Move the __<xx>_dup
functions (used by the xget... functions) from the <xx>io.c files
to the new <xx>mem.c files. This avoid linking some utils against
the SELinux library.
glibc socket to flush the nscd tables. This comes from the RedHat
patch shadow-4.0.16-nscd.c.
* lib/commonio.c: Forbid inheritance of the passwd and group files
to the spawed processes (like nscd). This comes from the RedHat
patch shadow-4.0.17-notInheritFd.patch.
* lib/nscd.h: Update header.
* NEWS, lib/commonio.c (commonio_update): When an entry is updated, make
sure that there are no other entry with the same name. This fixes
an infinite loop in userdel and usermod when an (erroneous) group
file contains two entries with the same name.
(https://bugzilla.redhat.com/show_bug.cgi?id=240915)
