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newusers: Add support for assiging subordinate uids and gids.

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Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2013-01-22 01:19:28 -08:00 committed by Serge Hallyn
parent d5b3092331
commit 2cc8c2c0dc
1 changed files with 124 additions and 0 deletions
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124
src/newusers.c
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@ -65,6 +65,7 @@
#include "pwio.h"
#include "sgroupio.h"
#include "shadowio.h"
#include "subordinateio.h"
#include "chkname.h"
/*
@ -82,6 +83,8 @@ static long sha_rounds = 5000;
#endif /* USE_SHA_CRYPT */
#endif /* !USE_PAM */
static bool is_sub_uid = false;
static bool is_sub_gid = false;
static bool is_shadow;
#ifdef SHADOWGRP
static bool is_shadow_grp;
@ -90,6 +93,8 @@ static bool sgr_locked = false;
static bool pw_locked = false;
static bool gr_locked = false;
static bool spw_locked = false;
static bool sub_uid_locked = false;
static bool sub_gid_locked = false;
/* local function prototypes */
static void usage (int status);
@ -178,6 +183,20 @@ static void fail_exit (int code)
}
}
#endif
if (sub_uid_locked) {
if (sub_uid_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_uid_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", sub_uid_dbname ()));
/* continue */
}
}
if (sub_gid_locked) {
if (sub_gid_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_gid_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", sub_gid_dbname ()));
/* continue */
}
}
exit (code);
}
@ -759,6 +778,24 @@ static void open_files (void)
sgr_locked = true;
}
#endif
if (is_sub_uid) {
if (sub_uid_lock () == 0) {
fprintf (stderr,
_("%s: cannot lock %s; try again later.\n"),
Prog, sub_uid_dbname ());
fail_exit (EXIT_FAILURE);
}
sub_uid_locked = true;
}
if (is_sub_gid) {
if (sub_gid_lock () == 0) {
fprintf (stderr,
_("%s: cannot lock %s; try again later.\n"),
Prog, sub_gid_dbname ());
fail_exit (EXIT_FAILURE);
}
sub_gid_locked = true;
}
if (pw_open (O_RDWR) == 0) {
fprintf (stderr, _("%s: cannot open %s\n"), Prog, pw_dbname ());
@ -778,6 +815,22 @@ static void open_files (void)
fail_exit (EXIT_FAILURE);
}
#endif
if (is_sub_uid) {
if (sub_uid_open (O_RDWR) == 0) {
fprintf (stderr,
_("%s: cannot open %s\n"),
Prog, sub_uid_dbname ());
fail_exit (EXIT_FAILURE);
}
}
if (is_sub_gid) {
if (sub_gid_open (O_RDWR) == 0) {
fprintf (stderr,
_("%s: cannot open %s\n"),
Prog, sub_gid_dbname ());
fail_exit (EXIT_FAILURE);
}
}
}
/*
@ -822,6 +875,19 @@ static void close_files (void)
SYSLOG ((LOG_ERR, "failure while writing changes to %s", gr_dbname ()));
fail_exit (EXIT_FAILURE);
}
if (is_sub_uid && (sub_uid_close () == 0)) {
fprintf (stderr,
_("%s: failure while writing changes to %s\n"), Prog, sub_uid_dbname ());
SYSLOG ((LOG_ERR, "failure while writing changes to %s", sub_uid_dbname ()));
fail_exit (EXIT_FAILURE);
}
if (is_sub_gid && (sub_gid_close () == 0)) {
fprintf (stderr,
_("%s: failure while writing changes to %s\n"), Prog, sub_gid_dbname ());
SYSLOG ((LOG_ERR, "failure while writing changes to %s", sub_gid_dbname ()));
fail_exit (EXIT_FAILURE);
}
if (gr_unlock () == 0) {
fprintf (stderr,
_("%s: failed to unlock %s\n"),
@ -850,6 +916,22 @@ static void close_files (void)
sgr_locked = false;
}
#endif
if (is_sub_uid) {
if (sub_uid_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_uid_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", sub_uid_dbname ()));
/* continue */
}
sub_uid_locked = false;
}
if (is_sub_gid) {
if (sub_gid_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sub_gid_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", sub_gid_dbname ()));
/* continue */
}
sub_gid_locked = false;
}
}
int main (int argc, char **argv)
@ -891,6 +973,8 @@ int main (int argc, char **argv)
#ifdef SHADOWGRP
is_shadow_grp = sgr_file_present ();
#endif
is_sub_uid = sub_uid_file_present ();
is_sub_gid = sub_gid_file_present ();
open_files ();
@ -1071,6 +1155,46 @@ int main (int argc, char **argv)
errors++;
continue;
}
/*
* Add subordinate uids if the user does not have them.
*/
if (is_sub_uid && !sub_uid_assigned(fields[0])) {
uid_t sub_uid_start = 0;
unsigned long sub_uid_count = 0;
if (find_new_sub_uids(fields[0], &sub_uid_start, &sub_uid_count) == 0) {
if (sub_uid_add(fields[0], sub_uid_start, sub_uid_count) == 0) {
fprintf (stderr,
_("%s: failed to prepare new %s entry\n"),
Prog, sub_uid_dbname ());
}
} else {
fprintf (stderr,
_("%s: can't find subordinate user range\n"),
Prog);
errors++;
}
}
/*
* Add subordinate gids if the user does not have them.
*/
if (is_sub_gid && !sub_gid_assigned(fields[0])) {
gid_t sub_gid_start = 0;
unsigned long sub_gid_count = 0;
if (find_new_sub_gids(fields[0], &sub_gid_start, &sub_gid_count) == 0) {
if (sub_gid_add(fields[0], sub_gid_start, sub_gid_count) == 0) {
fprintf (stderr,
_("%s: failed to prepare new %s entry\n"),
Prog, sub_uid_dbname ());
}
} else {
fprintf (stderr,
_("%s: can't find subordinate group range\n"),
Prog);
errors++;
}
}
}
/*