1 /*
2 * $Id: bsd-cray.c,v 1.17 2007/08/15 09:17:43 dtucker Exp $
3 *
4 * bsd-cray.c
5 *
6 * Copyright (c) 2002, Cray Inc. (Wendy Palm <wendyp@cray.com>)
7 * Significant portions provided by
8 * Wayne Schroeder, SDSC <schroeder@sdsc.edu>
9 * William Jones, UTexas <jones@tacc.utexas.edu>
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Created: Apr 22 16.34:00 2002 wp
32 *
33 * This file contains functions required for proper execution
34 * on UNICOS systems.
35 *
36 */
37 #ifdef _UNICOS
38
39 #include <udb.h>
40 #include <tmpdir.h>
41 #include <unistd.h>
42 #include <sys/category.h>
43 #include <utmp.h>
44 #include <sys/jtab.h>
45 #include <signal.h>
46 #include <sys/priv.h>
47 #include <sys/secparm.h>
48 #include <sys/tfm.h>
49 #include <sys/usrv.h>
50 #include <sys/sysv.h>
51 #include <sys/sectab.h>
52 #include <sys/secstat.h>
53 #include <sys/stat.h>
54 #include <sys/session.h>
55 #include <stdarg.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <unistd.h>
59 #include <pwd.h>
60 #include <fcntl.h>
61 #include <errno.h>
62 #include <ia.h>
63 #include <urm.h>
64 #include "ssh.h"
65
66 #include "includes.h"
67 #include "sys/types.h"
68
69 #ifndef HAVE_STRUCT_SOCKADDR_STORAGE
70 # define _SS_MAXSIZE 128 /* Implementation specific max size */
71 # define _SS_PADSIZE (_SS_MAXSIZE - sizeof (struct sockaddr))
72
73 # define ss_family ss_sa.sa_family
74 #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
75
76 #ifndef IN6_IS_ADDR_LOOPBACK
77 # define IN6_IS_ADDR_LOOPBACK(a) \
78 (((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \
79 ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1))
80 #endif /* !IN6_IS_ADDR_LOOPBACK */
81
82 #ifndef AF_INET6
83 /* Define it to something that should never appear */
84 #define AF_INET6 AF_MAX
85 #endif
86
87 #include "log.h"
88 #include "servconf.h"
89 #include "bsd-cray.h"
90
91 #define MAXACID 80
92
93 extern ServerOptions options;
94
95 char cray_tmpdir[TPATHSIZ + 1]; /* job TMPDIR path */
96
97 struct sysv sysv; /* system security structure */
98 struct usrv usrv; /* user security structure */
99
100 /*
101 * Functions.
102 */
103 void cray_retain_utmp(struct utmp *, int);
104 void cray_delete_tmpdir(char *, int, uid_t);
105 void cray_init_job(struct passwd *);
106 void cray_set_tmpdir(struct utmp *);
107 void cray_login_failure(char *, int);
108 int cray_setup(uid_t, char *, const char *);
109 int cray_access_denied(char *);
110
111 void
cray_login_failure(char * username,int errcode)112 cray_login_failure(char *username, int errcode)
113 {
114 struct udb *ueptr; /* UDB pointer for username */
115 ia_failure_t fsent; /* ia_failure structure */
116 ia_failure_ret_t fret; /* ia_failure return stuff */
117 struct jtab jtab; /* job table structure */
118 int jid = 0; /* job id */
119
120 if ((jid = getjtab(&jtab)) < 0)
121 debug("cray_login_failure(): getjtab error");
122
123 getsysudb();
124 if ((ueptr = getudbnam(username)) == UDB_NULL)
125 debug("cray_login_failure(): getudbname() returned NULL");
126 endudb();
127
128 memset(&fsent, '\0', sizeof(fsent));
129 fsent.revision = 0;
130 fsent.uname = username;
131 fsent.host = (char *)get_canonical_hostname(options.use_dns);
132 fsent.ttyn = "sshd";
133 fsent.caller = IA_SSHD;
134 fsent.flags = IA_INTERACTIVE;
135 fsent.ueptr = ueptr;
136 fsent.jid = jid;
137 fsent.errcode = errcode;
138 fsent.pwdp = NULL;
139 fsent.exitcode = 0; /* dont exit in ia_failure() */
140
141 fret.revision = 0;
142 fret.normal = 0;
143
144 /*
145 * Call ia_failure because of an login failure.
146 */
147 ia_failure(&fsent, &fret);
148 }
149
150 /*
151 * Cray access denied
152 */
153 int
cray_access_denied(char * username)154 cray_access_denied(char *username)
155 {
156 struct udb *ueptr; /* UDB pointer for username */
157 int errcode; /* IA errorcode */
158
159 errcode = 0;
160 getsysudb();
161 if ((ueptr = getudbnam(username)) == UDB_NULL)
162 debug("cray_login_failure(): getudbname() returned NULL");
163 endudb();
164
165 if (ueptr != NULL && ueptr->ue_disabled)
166 errcode = IA_DISABLED;
167 if (errcode)
168 cray_login_failure(username, errcode);
169
170 return (errcode);
171 }
172
173 /*
174 * record_failed_login: generic "login failed" interface function
175 */
176 void
record_failed_login(const char * user,const char * hostname,const char * ttyname)177 record_failed_login(const char *user, const char *hostname, const char *ttyname)
178 {
179 cray_login_failure((char *)user, IA_UDBERR);
180 }
181
182 int
cray_setup(uid_t uid,char * username,const char * command)183 cray_setup (uid_t uid, char *username, const char *command)
184 {
185 extern struct udb *getudb();
186 extern char *setlimits();
187
188 int err; /* error return */
189 time_t system_time; /* current system clock */
190 time_t expiration_time; /* password expiration time */
191 int maxattempts; /* maximum no. of failed login attempts */
192 int SecureSys; /* unicos security flag */
193 int minslevel = 0; /* system minimum security level */
194 int i, j;
195 int valid_acct = -1; /* flag for reading valid acct */
196 char acct_name[MAXACID] = { "" }; /* used to read acct name */
197 struct jtab jtab; /* Job table struct */
198 struct udb ue; /* udb entry for logging-in user */
199 struct udb *up; /* pointer to UDB entry */
200 struct secstat secinfo; /* file security attributes */
201 struct servprov init_info; /* used for sesscntl() call */
202 int jid; /* job ID */
203 int pid; /* process ID */
204 char *sr; /* status return from setlimits() */
205 char *ttyn = NULL; /* ttyname or command name*/
206 char hostname[MAXHOSTNAMELEN];
207 /* passwd stuff for ia_user */
208 passwd_t pwdacm, pwddialup, pwdudb, pwdwal, pwddce;
209 ia_user_ret_t uret; /* stuff returned from ia_user */
210 ia_user_t usent; /* ia_user main structure */
211 int ia_rcode; /* ia_user return code */
212 ia_failure_t fsent; /* ia_failure structure */
213 ia_failure_ret_t fret; /* ia_failure return stuff */
214 ia_success_t ssent; /* ia_success structure */
215 ia_success_ret_t sret; /* ia_success return stuff */
216 int ia_mlsrcode; /* ia_mlsuser return code */
217 int secstatrc; /* [f]secstat return code */
218
219 if (SecureSys = (int)sysconf(_SC_CRAY_SECURE_SYS)) {
220 getsysv(&sysv, sizeof(struct sysv));
221 minslevel = sysv.sy_minlvl;
222 if (getusrv(&usrv) < 0)
223 fatal("getusrv() failed, errno = %d", errno);
224 }
225 hostname[0] = '\0';
226 strlcpy(hostname,
227 (char *)get_canonical_hostname(options.use_dns),
228 MAXHOSTNAMELEN);
229 /*
230 * Fetch user's UDB entry.
231 */
232 getsysudb();
233 if ((up = getudbnam(username)) == UDB_NULL)
234 fatal("cannot fetch user's UDB entry");
235
236 /*
237 * Prevent any possible fudging so perform a data
238 * safety check and compare the supplied uid against
239 * the udb's uid.
240 */
241 if (up->ue_uid != uid)
242 fatal("IA uid missmatch");
243 endudb();
244
245 if ((jid = getjtab(&jtab)) < 0) {
246 debug("getjtab");
247 return(-1);
248 }
249 pid = getpid();
250 ttyn = ttyname(0);
251 if (SecureSys) {
252 if (ttyn != NULL)
253 secstatrc = secstat(ttyn, &secinfo);
254 else
255 secstatrc = fsecstat(1, &secinfo);
256
257 if (secstatrc == 0)
258 debug("[f]secstat() successful");
259 else
260 fatal("[f]secstat() error, rc = %d", secstatrc);
261 }
262 if ((ttyn == NULL) && ((char *)command != NULL))
263 ttyn = (char *)command;
264 /*
265 * Initialize all structures to call ia_user
266 */
267 usent.revision = 0;
268 usent.uname = username;
269 usent.host = hostname;
270 usent.ttyn = ttyn;
271 usent.caller = IA_SSHD;
272 usent.pswdlist = &pwdacm;
273 usent.ueptr = &ue;
274 usent.flags = IA_INTERACTIVE | IA_FFLAG;
275 pwdacm.atype = IA_SECURID;
276 pwdacm.pwdp = NULL;
277 pwdacm.next = &pwdudb;
278
279 pwdudb.atype = IA_UDB;
280 pwdudb.pwdp = NULL;
281 pwdudb.next = &pwddce;
282
283 pwddce.atype = IA_DCE;
284 pwddce.pwdp = NULL;
285 pwddce.next = &pwddialup;
286
287 pwddialup.atype = IA_DIALUP;
288 pwddialup.pwdp = NULL;
289 /* pwddialup.next = &pwdwal; */
290 pwddialup.next = NULL;
291
292 pwdwal.atype = IA_WAL;
293 pwdwal.pwdp = NULL;
294 pwdwal.next = NULL;
295
296 uret.revision = 0;
297 uret.pswd = NULL;
298 uret.normal = 0;
299
300 ia_rcode = ia_user(&usent, &uret);
301 switch (ia_rcode) {
302 /*
303 * These are acceptable return codes from ia_user()
304 */
305 case IA_UDBWEEK: /* Password Expires in 1 week */
306 expiration_time = ue.ue_pwage.time + ue.ue_pwage.maxage;
307 printf ("WARNING - your current password will expire %s\n",
308 ctime((const time_t *)&expiration_time));
309 break;
310 case IA_UDBEXPIRED:
311 if (ttyname(0) != NULL) {
312 /* Force a password change */
313 printf("Your password has expired; Choose a new one.\n");
314 execl("/bin/passwd", "passwd", username, 0);
315 exit(9);
316 }
317 break;
318 case IA_NORMAL: /* Normal Return Code */
319 break;
320 case IA_BACKDOOR:
321 /* XXX: can we memset it to zero here so save some of this */
322 strlcpy(ue.ue_name, "root", sizeof(ue.ue_name));
323 strlcpy(ue.ue_dir, "/", sizeof(ue.ue_dir));
324 strlcpy(ue.ue_shell, "/bin/sh", sizeof(ue.ue_shell));
325
326 ue.ue_passwd[0] = '\0';
327 ue.ue_age[0] = '\0';
328 ue.ue_comment[0] = '\0';
329 ue.ue_loghost[0] = '\0';
330 ue.ue_logline[0] = '\0';
331
332 ue.ue_uid = -1;
333 ue.ue_nice[UDBRC_INTER] = 0;
334
335 for (i = 0; i < MAXVIDS; i++)
336 ue.ue_gids[i] = 0;
337
338 ue.ue_logfails = 0;
339 ue.ue_minlvl = ue.ue_maxlvl = ue.ue_deflvl = minslevel;
340 ue.ue_defcomps = 0;
341 ue.ue_comparts = 0;
342 ue.ue_permits = 0;
343 ue.ue_trap = 0;
344 ue.ue_disabled = 0;
345 ue.ue_logtime = 0;
346 break;
347 case IA_CONSOLE: /* Superuser not from Console */
348 case IA_TRUSTED: /* Trusted user */
349 if (options.permit_root_login > PERMIT_NO)
350 break; /* Accept root login */
351 default:
352 /*
353 * These are failed return codes from ia_user()
354 */
355 switch (ia_rcode)
356 {
357 case IA_BADAUTH:
358 printf("Bad authorization, access denied.\n");
359 break;
360 case IA_DISABLED:
361 printf("Your login has been disabled. Contact the system ");
362 printf("administrator for assistance.\n");
363 break;
364 case IA_GETSYSV:
365 printf("getsysv() failed - errno = %d\n", errno);
366 break;
367 case IA_MAXLOGS:
368 printf("Maximum number of failed login attempts exceeded.\n");
369 printf("Access denied.\n");
370 break;
371 case IA_UDBPWDNULL:
372 if (SecureSys)
373 printf("NULL Password not allowed on MLS systems.\n");
374 break;
375 default:
376 break;
377 }
378
379 /*
380 * Authentication failed.
381 */
382 printf("sshd: Login incorrect, (0%o)\n",
383 ia_rcode-IA_ERRORCODE);
384
385 /*
386 * Initialize structure for ia_failure
387 * which will exit.
388 */
389 fsent.revision = 0;
390 fsent.uname = username;
391 fsent.host = hostname;
392 fsent.ttyn = ttyn;
393 fsent.caller = IA_SSHD;
394 fsent.flags = IA_INTERACTIVE;
395 fsent.ueptr = &ue;
396 fsent.jid = jid;
397 fsent.errcode = ia_rcode;
398 fsent.pwdp = uret.pswd;
399 fsent.exitcode = 1;
400
401 fret.revision = 0;
402 fret.normal = 0;
403
404 /*
405 * Call ia_failure because of an IA failure.
406 * There is no return because ia_failure exits.
407 */
408 ia_failure(&fsent, &fret);
409
410 exit(1);
411 }
412
413 ia_mlsrcode = IA_NORMAL;
414 if (SecureSys) {
415 debug("calling ia_mlsuser()");
416 ia_mlsrcode = ia_mlsuser(&ue, &secinfo, &usrv, NULL, 0);
417 }
418 if (ia_mlsrcode != IA_NORMAL) {
419 printf("sshd: Login incorrect, (0%o)\n",
420 ia_mlsrcode-IA_ERRORCODE);
421 /*
422 * Initialize structure for ia_failure
423 * which will exit.
424 */
425 fsent.revision = 0;
426 fsent.uname = username;
427 fsent.host = hostname;
428 fsent.ttyn = ttyn;
429 fsent.caller = IA_SSHD;
430 fsent.flags = IA_INTERACTIVE;
431 fsent.ueptr = &ue;
432 fsent.jid = jid;
433 fsent.errcode = ia_mlsrcode;
434 fsent.pwdp = uret.pswd;
435 fsent.exitcode = 1;
436 fret.revision = 0;
437 fret.normal = 0;
438
439 /*
440 * Call ia_failure because of an IA failure.
441 * There is no return because ia_failure exits.
442 */
443 ia_failure(&fsent,&fret);
444 exit(1);
445 }
446
447 /* Provide login status information */
448 if (options.print_lastlog && ue.ue_logtime != 0) {
449 printf("Last successful login was : %.*s ", 19,
450 (char *)ctime(&ue.ue_logtime));
451
452 if (*ue.ue_loghost != '\0') {
453 printf("from %.*s\n", sizeof(ue.ue_loghost),
454 ue.ue_loghost);
455 } else {
456 printf("on %.*s\n", sizeof(ue.ue_logline),
457 ue.ue_logline);
458 }
459
460 if (SecureSys && (ue.ue_logfails != 0)) {
461 printf(" followed by %d failed attempts\n",
462 ue.ue_logfails);
463 }
464 }
465
466 /*
467 * Call ia_success to process successful I/A.
468 */
469 ssent.revision = 0;
470 ssent.uname = username;
471 ssent.host = hostname;
472 ssent.ttyn = ttyn;
473 ssent.caller = IA_SSHD;
474 ssent.flags = IA_INTERACTIVE;
475 ssent.ueptr = &ue;
476 ssent.jid = jid;
477 ssent.errcode = ia_rcode;
478 ssent.us = NULL;
479 ssent.time = 1; /* Set ue_logtime */
480
481 sret.revision = 0;
482 sret.normal = 0;
483
484 ia_success(&ssent, &sret);
485
486 /*
487 * Query for account, iff > 1 valid acid & askacid permbit
488 */
489 if (((ue.ue_permbits & PERMBITS_ACCTID) ||
490 (ue.ue_acids[0] >= 0) && (ue.ue_acids[1] >= 0)) &&
491 ue.ue_permbits & PERMBITS_ASKACID) {
492 if (ttyname(0) != NULL) {
493 debug("cray_setup: ttyname true case, %.100s", ttyname);
494 while (valid_acct == -1) {
495 printf("Account (? for available accounts)"
496 " [%s]: ", acid2nam(ue.ue_acids[0]));
497 fgets(acct_name, MAXACID, stdin);
498 switch (acct_name[0]) {
499 case EOF:
500 exit(0);
501 break;
502 case '\0':
503 valid_acct = ue.ue_acids[0];
504 strlcpy(acct_name, acid2nam(valid_acct), MAXACID);
505 break;
506 case '?':
507 /* Print the list 3 wide */
508 for (i = 0, j = 0; i < MAXVIDS; i++) {
509 if (ue.ue_acids[i] == -1) {
510 printf("\n");
511 break;
512 }
513 if (++j == 4) {
514 j = 1;
515 printf("\n");
516 }
517 printf(" %s",
518 acid2nam(ue.ue_acids[i]));
519 }
520 if (ue.ue_permbits & PERMBITS_ACCTID) {
521 printf("\"acctid\" permbit also allows"
522 " you to select any valid "
523 "account name.\n");
524 }
525 printf("\n");
526 break;
527 default:
528 valid_acct = nam2acid(acct_name);
529 if (valid_acct == -1)
530 printf(
531 "Account id not found for"
532 " account name \"%s\"\n\n",
533 acct_name);
534 break;
535 }
536 /*
537 * If an account was given, search the user's
538 * acids array to verify they can use this account.
539 */
540 if ((valid_acct != -1) &&
541 !(ue.ue_permbits & PERMBITS_ACCTID)) {
542 for (i = 0; i < MAXVIDS; i++) {
543 if (ue.ue_acids[i] == -1)
544 break;
545 if (valid_acct == ue.ue_acids[i])
546 break;
547 }
548 if (i == MAXVIDS ||
549 ue.ue_acids[i] == -1) {
550 fprintf(stderr, "Cannot set"
551 " account name to "
552 "\"%s\", permission "
553 "denied\n\n", acct_name);
554 valid_acct = -1;
555 }
556 }
557 }
558 } else {
559 /*
560 * The client isn't connected to a terminal and can't
561 * respond to an acid prompt. Use default acid.
562 */
563 debug("cray_setup: ttyname false case, %.100s",
564 ttyname);
565 valid_acct = ue.ue_acids[0];
566 }
567 } else {
568 /*
569 * The user doesn't have the askacid permbit set or
570 * only has one valid account to use.
571 */
572 valid_acct = ue.ue_acids[0];
573 }
574 if (acctid(0, valid_acct) < 0) {
575 printf ("Bad account id: %d\n", valid_acct);
576 exit(1);
577 }
578
579 /*
580 * Now set shares, quotas, limits, including CPU time for the
581 * (interactive) job and process, and set up permissions
582 * (for chown etc), etc.
583 */
584 if (setshares(ue.ue_uid, valid_acct, printf, 0, 0)) {
585 printf("Unable to give %d shares to <%s>(%d/%d)\n",
586 ue.ue_shares, ue.ue_name, ue.ue_uid, valid_acct);
587 exit(1);
588 }
589
590 sr = setlimits(username, C_PROC, pid, UDBRC_INTER);
591 if (sr != NULL) {
592 debug("%.200s", sr);
593 exit(1);
594 }
595 sr = setlimits(username, C_JOB, jid, UDBRC_INTER);
596 if (sr != NULL) {
597 debug("%.200s", sr);
598 exit(1);
599 }
600 /*
601 * Place the service provider information into
602 * the session table (Unicos) or job table (Unicos/mk).
603 * There exist double defines for the job/session table in
604 * unicos/mk (jtab.h) so no need for a compile time switch.
605 */
606 memset(&init_info, '\0', sizeof(init_info));
607 init_info.s_sessinit.si_id = URM_SPT_LOGIN;
608 init_info.s_sessinit.si_pid = getpid();
609 init_info.s_sessinit.si_sid = jid;
610 sesscntl(0, S_SETSERVPO, (int)&init_info);
611
612 /*
613 * Set user and controlling tty security attributes.
614 */
615 if (SecureSys) {
616 if (setusrv(&usrv) == -1) {
617 debug("setusrv() failed, errno = %d",errno);
618 exit(1);
619 }
620 }
621
622 return (0);
623 }
624
625 /*
626 * The rc.* and /etc/sdaemon methods of starting a program on unicos/unicosmk
627 * can have pal privileges that sshd can inherit which
628 * could allow a user to su to root with out a password.
629 * This subroutine clears all privileges.
630 */
631 void
drop_cray_privs()632 drop_cray_privs()
633 {
634 #if defined(_SC_CRAY_PRIV_SU)
635 priv_proc_t *privstate;
636 int result;
637 extern int priv_set_proc();
638 extern priv_proc_t *priv_init_proc();
639
640 /*
641 * If ether of theses two flags are not set
642 * then don't allow this version of ssh to run.
643 */
644 if (!sysconf(_SC_CRAY_PRIV_SU))
645 fatal("Not PRIV_SU system.");
646 if (!sysconf(_SC_CRAY_POSIX_PRIV))
647 fatal("Not POSIX_PRIV.");
648
649 debug("Setting MLS labels.");;
650
651 if (sysconf(_SC_CRAY_SECURE_MAC)) {
652 usrv.sv_minlvl = SYSLOW;
653 usrv.sv_actlvl = SYSHIGH;
654 usrv.sv_maxlvl = SYSHIGH;
655 } else {
656 usrv.sv_minlvl = sysv.sy_minlvl;
657 usrv.sv_actlvl = sysv.sy_minlvl;
658 usrv.sv_maxlvl = sysv.sy_maxlvl;
659 }
660 usrv.sv_actcmp = 0;
661 usrv.sv_valcmp = sysv.sy_valcmp;
662
663 usrv.sv_intcat = TFM_SYSTEM;
664 usrv.sv_valcat |= (TFM_SYSTEM | TFM_SYSFILE);
665
666 if (setusrv(&usrv) < 0) {
667 fatal("%s(%d): setusrv(): %s", __FILE__, __LINE__,
668 strerror(errno));
669 }
670
671 if ((privstate = priv_init_proc()) != NULL) {
672 result = priv_set_proc(privstate);
673 if (result != 0 ) {
674 fatal("%s(%d): priv_set_proc(): %s",
675 __FILE__, __LINE__, strerror(errno));
676 }
677 priv_free_proc(privstate);
678 }
679 debug ("Privileges should be cleared...");
680 #else
681 /* XXX: do this differently */
682 # error Cray systems must be run with _SC_CRAY_PRIV_SU on!
683 #endif
684 }
685
686
687 /*
688 * Retain utmp/wtmp information - used by cray accounting.
689 */
690 void
cray_retain_utmp(struct utmp * ut,int pid)691 cray_retain_utmp(struct utmp *ut, int pid)
692 {
693 int fd;
694 struct utmp utmp;
695
696 if ((fd = open(UTMP_FILE, O_RDONLY)) != -1) {
697 /* XXX use atomicio */
698 while (read(fd, (char *)&utmp, sizeof(utmp)) == sizeof(utmp)) {
699 if (pid == utmp.ut_pid) {
700 ut->ut_jid = utmp.ut_jid;
701 strncpy(ut->ut_tpath, utmp.ut_tpath, sizeof(utmp.ut_tpath));
702 strncpy(ut->ut_host, utmp.ut_host, sizeof(utmp.ut_host));
703 strncpy(ut->ut_name, utmp.ut_name, sizeof(utmp.ut_name));
704 break;
705 }
706 }
707 close(fd);
708 } else
709 fatal("Unable to open utmp file");
710 }
711
712 /*
713 * tmpdir support.
714 */
715
716 /*
717 * find and delete jobs tmpdir.
718 */
719 void
cray_delete_tmpdir(char * login,int jid,uid_t uid)720 cray_delete_tmpdir(char *login, int jid, uid_t uid)
721 {
722 static char jtmp[TPATHSIZ];
723 struct stat statbuf;
724 int child, c, wstat;
725
726 for (c = 'a'; c <= 'z'; c++) {
727 snprintf(jtmp, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
728 if (stat(jtmp, &statbuf) == 0 && statbuf.st_uid == uid)
729 break;
730 }
731
732 if (c > 'z')
733 return;
734
735 if ((child = fork()) == 0) {
736 execl(CLEANTMPCMD, CLEANTMPCMD, login, jtmp, (char *)NULL);
737 fatal("cray_delete_tmpdir: execl of CLEANTMPCMD failed");
738 }
739
740 while (waitpid(child, &wstat, 0) == -1 && errno == EINTR)
741 ;
742 }
743
744 /*
745 * Remove tmpdir on job termination.
746 */
747 void
cray_job_termination_handler(int sig)748 cray_job_termination_handler(int sig)
749 {
750 int jid;
751 char *login = NULL;
752 struct jtab jtab;
753
754 if ((jid = waitjob(&jtab)) == -1 ||
755 (login = uid2nam(jtab.j_uid)) == NULL)
756 return;
757
758 cray_delete_tmpdir(login, jid, jtab.j_uid);
759 }
760
761 /*
762 * Set job id and create tmpdir directory.
763 */
764 void
cray_init_job(struct passwd * pw)765 cray_init_job(struct passwd *pw)
766 {
767 int jid;
768 int c;
769
770 jid = setjob(pw->pw_uid, WJSIGNAL);
771 if (jid < 0)
772 fatal("System call setjob failure");
773
774 for (c = 'a'; c <= 'z'; c++) {
775 snprintf(cray_tmpdir, TPATHSIZ, "%s/jtmp.%06d%c", JTMPDIR, jid, c);
776 if (mkdir(cray_tmpdir, JTMPMODE) != 0)
777 continue;
778 if (chown(cray_tmpdir, pw->pw_uid, pw->pw_gid) != 0) {
779 rmdir(cray_tmpdir);
780 continue;
781 }
782 break;
783 }
784
785 if (c > 'z')
786 cray_tmpdir[0] = '\0';
787 }
788
789 void
cray_set_tmpdir(struct utmp * ut)790 cray_set_tmpdir(struct utmp *ut)
791 {
792 int jid;
793 struct jtab jbuf;
794
795 if ((jid = getjtab(&jbuf)) < 0)
796 return;
797
798 /*
799 * Set jid and tmpdir in utmp record.
800 */
801 ut->ut_jid = jid;
802 strncpy(ut->ut_tpath, cray_tmpdir, TPATHSIZ);
803 }
804 #endif /* UNICOS */
805
806 #ifdef _UNICOSMP
807 #include <pwd.h>
808 /*
809 * Set job id and create tmpdir directory.
810 */
811 void
cray_init_job(struct passwd * pw)812 cray_init_job(struct passwd *pw)
813 {
814 initrm_silent(pw->pw_uid);
815 return;
816 }
817 #endif /* _UNICOSMP */
818