/* * OpenPBS (Portable Batch System) v2.3 Software License * * Copyright (c) 1999-2000 Veridian Information Solutions, Inc. * All rights reserved. * * --------------------------------------------------------------------------- * For a license to use or redistribute the OpenPBS software under conditions * other than those described below, or to purchase support for this software, * please contact Veridian Systems, PBS Products Department ("Licensor") at: * * www.OpenPBS.org +1 650 967-4675 sales@OpenPBS.org * 877 902-4PBS (US toll-free) * --------------------------------------------------------------------------- * * This license covers use of the OpenPBS v2.3 software (the "Software") at * your site or location, and, for certain users, redistribution of the * Software to other sites and locations. Use and redistribution of * OpenPBS v2.3 in source and binary forms, with or without modification, * are permitted provided that all of the following conditions are met. * After December 31, 2001, only conditions 3-6 must be met: * * 1. Commercial and/or non-commercial use of the Software is permitted * provided a current software registration is on file at www.OpenPBS.org. * If use of this software contributes to a publication, product, or * service, proper attribution must be given; see www.OpenPBS.org/credit.html * * 2. Redistribution in any form is only permitted for non-commercial, * non-profit purposes. There can be no charge for the Software or any * software incorporating the Software. Further, there can be no * expectation of revenue generated as a consequence of redistributing * the Software. * * 3. Any Redistribution of source code must retain the above copyright notice * and the acknowledgment contained in paragraph 6, this list of conditions * and the disclaimer contained in paragraph 7. * * 4. Any Redistribution in binary form must reproduce the above copyright * notice and the acknowledgment contained in paragraph 6, this list of * conditions and the disclaimer contained in paragraph 7 in the * documentation and/or other materials provided with the distribution. * * 5. Redistributions in any form must be accompanied by information on how to * obtain complete source code for the OpenPBS software and any * modifications and/or additions to the OpenPBS software. The source code * must either be included in the distribution or be available for no more * than the cost of distribution plus a nominal fee, and all modifications * and additions to the Software must be freely redistributable by any party * (including Licensor) without restriction. * * 6. All advertising materials mentioning features or use of the Software must * display the following acknowledgment: * * "This product includes software developed by NASA Ames Research Center, * Lawrence Livermore National Laboratory, and Veridian Information * Solutions, Inc. * Visit www.OpenPBS.org for OpenPBS software support, * products, and information." * * 7. DISCLAIMER OF WARRANTY * * THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT * ARE EXPRESSLY DISCLAIMED. * * IN NO EVENT SHALL VERIDIAN CORPORATION, ITS AFFILIATED COMPANIES, OR THE * U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * This license will be governed by the laws of the Commonwealth of Virginia, * without reference to its choice of law rules. */ /* * req_signaljob.c - functions dealing with sending a signal * to a running job. */ #include /* the master config generated by configure */ #include #include #include "libpbs.h" #include #include #include "server_limits.h" #include "list_link.h" #include "attribute.h" #include "server.h" #include "credential.h" #include "batch_request.h" #include "pbs_job.h" #include "work_task.h" #include "pbs_error.h" #include "log.h" #include "svrfunc.h" /* Private Function local to this file */ static void post_signal_req (struct work_task *); /* Global Data Items: */ extern int LOGLEVEL; extern void set_old_nodes (job *); /* * req_signaljob - service the Signal Job Request * * This request sends (via MOM) a signal to a running job. * MOM procceses in req_signaljob() * MOM replies with either ack or reject * Server gets response from MOM which invokes post_signal_req() * Which then replies to the requester with either a reject or ack */ void req_signaljob( struct batch_request *preq) /* I */ { job *pjob; int rc; if ((pjob = chk_job_request(preq->rq_ind.rq_signal.rq_jid, preq)) == 0) { return; } /* the job must be running */ if (pjob->ji_qs.ji_state != JOB_STATE_RUNNING) { req_reject(PBSE_BADSTATE, 0, preq, NULL, NULL); return; } /* Special pseudo signals for suspend and resume require op/mgr */ if (!strcmp(preq->rq_ind.rq_signal.rq_signame, SIG_RESUME) || !strcmp(preq->rq_ind.rq_signal.rq_signame, SIG_SUSPEND)) { if ((preq->rq_perm & (ATR_DFLAG_OPRD | ATR_DFLAG_OPWR | ATR_DFLAG_MGRD | ATR_DFLAG_MGWR)) == 0) { /* for suspend/resume, must be mgr/op */ req_reject(PBSE_PERM, 0, preq, NULL, NULL); return; } preq->rq_extra = pjob; /* save job ptr for post_signal_req() */ } /* FIXME: need a race-free check for available free subnodes before * resuming a suspended job */ #ifdef DONOTSUSPINTJOB /* interactive jobs don't resume correctly so don't allow a suspend */ if (!strcmp(preq->rq_ind.rq_signal.rq_signame, SIG_SUSPEND) && (pjob->ji_wattr[(int)JOB_ATR_interactive].at_flags & ATR_VFLAG_SET) && (pjob->ji_wattr[(int)JOB_ATR_interactive].at_val.at_long > 0)) { req_reject(PBSE_JOBTYPE, 0, preq, NULL, NULL); return; } #endif if (LOGLEVEL >= 6) { sprintf(log_buffer, "relaying signal request to mom %lu", pjob->ji_qs.ji_un.ji_exect.ji_momaddr); log_record( PBSEVENT_SCHED, PBS_EVENTCLASS_REQUEST, "req_signaljob", log_buffer); } /* send reply for asynchronous suspend */ if (preq->rq_type == PBS_BATCH_AsySignalJob) { reply_ack(preq); } /* pass the request on to MOM */ if ((rc = relay_to_mom( pjob->ji_qs.ji_un.ji_exect.ji_momaddr, preq, post_signal_req))) { req_reject(rc, 0, preq, NULL, NULL); /* unable to get to MOM */ return; } /* After MOM acts and replies to us, we pick up in post_signal_req() */ /* SUCCESS */ return; } /* END req_signaljob() */ /* * issue_signal - send an internally generated signal to a running job */ int issue_signal( job *pjob, char *signame, /* name of the signal to send */ void (*func)(struct work_task *), void *extra) /* extra parameter to be stored in sig request */ { int rc; struct batch_request *newreq; /* build up a Signal Job batch request */ if ((newreq = alloc_br(PBS_BATCH_SignalJob)) == NULL) { /* FAILURE */ return(PBSE_SYSTEM); } newreq->rq_extra = extra; strcpy(newreq->rq_ind.rq_signal.rq_jid, pjob->ji_qs.ji_jobid); strncpy(newreq->rq_ind.rq_signal.rq_signame, signame, PBS_SIGNAMESZ); rc = relay_to_mom( pjob->ji_qs.ji_un.ji_exect.ji_momaddr, newreq, func); /* when MOM replies, we just free the request structure */ return(rc); } /* END issue_signal() */ /* * post_signal_req - complete a Signal Job Request (externally generated) */ static void post_signal_req( struct work_task *pwt) { job *pjob; struct batch_request *preq; svr_disconnect(pwt->wt_event); /* disconnect from MOM */ preq = pwt->wt_parm1; preq->rq_conn = preq->rq_orgconn; /* restore client socket */ if (preq->rq_reply.brp_code) { log_event( PBSEVENT_DEBUG, PBS_EVENTCLASS_REQUEST, preq->rq_ind.rq_signal.rq_jid, pbse_to_txt(PBSE_MOMREJECT)); errno = 0; req_reject(preq->rq_reply.brp_code, 0, preq, NULL, NULL); } else { pjob = preq->rq_extra; if (strcmp(preq->rq_ind.rq_signal.rq_signame, SIG_SUSPEND) == 0) { if ((pjob->ji_qs.ji_svrflags & JOB_SVFLG_Suspend) == 0) { pjob->ji_qs.ji_svrflags |= JOB_SVFLG_Suspend; set_statechar(pjob); job_save(pjob, SAVEJOB_QUICK); /* release resources allocated to suspended job - NORWAY */ free_nodes(pjob); } } else if (strcmp(preq->rq_ind.rq_signal.rq_signame, SIG_RESUME) == 0) { if (pjob->ji_qs.ji_svrflags & JOB_SVFLG_Suspend) { /* re-allocate assigned node to resumed job - NORWAY */ set_old_nodes(pjob); pjob->ji_qs.ji_svrflags &= ~JOB_SVFLG_Suspend; set_statechar(pjob); job_save(pjob, SAVEJOB_QUICK); } } reply_ack(preq); } return; } /* END post_signal_req() */ /* END req_signal.c */