* src/lastlog.c: Fix types, cast umin and umax to uid_t.
* src/lastlog.c: (option -u) user needs to be a signed long, not
uid_t (to accept rangees like -<uid>
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.
The flags variables are now global.
* New functions: check_perms(), update_gecos(),
get_old_fields(), and check_fields() split out of main().
* Before pam_end(), the return value of the previous
pam API was already checked. No need to validate it again.
* src/chage.c: New function: fail_exit(). Change most of the exit()
to a fail_exit, which makes sure the files are unlocked (new global
variables: pw_locked, spw_locked), the PAM transaction is ended, and
the failure is logged to libaudit (use a global user_name and user_uid
for logging).
* src/chage.c: Compilation fix for PAM support (pamh needs to be
global since the function split).
* src/chage.c: Document process_flags(), check_flags(), check_perms(),
open_files(), and close_files().
* src/chage.c: Split update_age() and get_defaults() out of main()
* src/chage.c: Drop the privileges just after opening the files.
* src/chage.c: Do not log to audit only if the user has an entry in
the shadow file.
* NEWS, src/chage.c (open_files): Also open the password file for
writing. This fix chage when the user only has a password entry (and
no shadow entries).
* src/chage.c (get_defaults): Use default values that don't change the
behavior of the account for the fields that are not specified when the
user has no shadow entry.
* src/chage.c: Before pam_end(), the return value of the previous
pam API was already checked. No need to validate it again.
* src/chage.c: main() split in new functions: process_flags(),
check_flags(), check_perms(), open_files(), and close_files().
* 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.
Merge RedHat's patch shadow-4.0.18.1-findNewUidOnce.patch:
* src/useradd.c (usr_update): Do not call find_new_uid(). The UID was
already either specified or found by another call to find_new_uid().
* src/useradd.c (find_new_uid): Always start with uid_min (find_new_uid()
is never called when user_id was already specified).
* src/useradd.c (find_new_uid): Fix the comments (find_new_uid() is not
called when the UID is specified (uflg)).
* src/useradd.c (main): Only call find_new_uid() if (!oflg) and (!uflg).
If uflg is set (but not oflg), check the UID uniqueness.
* src/useradd.c (find_new_uid): Don't check the uid and user name
uniqueness in find_new_uid(). The user name uniqueness is already checked
during the parameter validation. UID uniqueness is also checked (see
above).
* src/useradd.c (find_new_uid): Don't check uflg in find_new_uid().
* src/useradd.c (find_new_uid): Make sure that find_new_uid() is not
called when uflg is set (assert).
Cleanups in find_new_gid:
* src/useradd.c (find_new_gid): Check that gflg is not set (assert).
* src/useradd.c (find_new_gid): Do not check the group name uniqueness
(already checked in main).
* src/useradd.c (find_new_gid): Avoid a "continue" in the loop.
* src/useradd.c (find_new_gid): Remove irrelevant comments.
* src/useradd.c (find_new_gid): Fix the function definition's comment.
default. Keeping the feature enabled is safe. Disabling it permits
to disable the references to the SHA256 and SHA512 password
encryption algorithms from the usage help and manuals (in addition
to the support for these algorithms in the code).
* libmisc/obscure.c, libmisc/salt.c, src/newusers.c,
src/chpasswd.c, src/chgpasswd.c, src/passwd.c: ENCRYPT_METHOD is
always supported in login.defs. Remove the ENCRYPTMETHOD_SELECT
preprocessor condition.
* libmisc/obscure.c, libmisc/salt.c, src/newusers.c,
src/chpasswd.c, src/chgpasswd.c, src/passwd.c: Disable SHA256 and
SHA512 if USE_SHA_CRYPT is not defined (this corresponds to a
subset of the ENCRYPTMETHOD_SELECT sections).
