int pmixp_lib_init(void) { pmix_info_t *kvp = NULL; pmix_status_t rc; PMIXP_INFO_ADD(kvp, PMIX_USERID, uint32_t, pmixp_info_jobuid()); #ifdef PMIX_SERVER_TMPDIR PMIXP_INFO_ADD(kvp, PMIX_SERVER_TMPDIR, string, pmixp_info_tmpdir_lib()); #endif /* setup the server library */ if (PMIX_SUCCESS != (rc = PMIx_server_init(&slurm_pmix_cb, kvp, PMIXP_INFO_SIZE(kvp)))) { PMIXP_ERROR_STD("PMIx_server_init failed with error %d\n", rc); return SLURM_ERROR; } PMIXP_FREE_KEY(kvp); /* register the errhandler */ PMIx_Register_event_handler(NULL, 0, NULL, 0, _errhandler, _errhandler_reg_callbk, NULL); return SLURM_SUCCESS; }
int pmixp_libpmix_init(void) { int rc; mode_t rights = (S_IRUSR | S_IWUSR | S_IXUSR) | (S_IRGRP | S_IWGRP | S_IXGRP); pmix_info_t *kvp; /* NOTE: we need user who owns the job to access PMIx usock * file. According to 'man 7 unix': * "... In the Linux implementation, sockets which are visible in the file system * honor the permissions of the directory they are in... " * Our case is the following: slurmstepd is usually running as root, user application will * be "sudo'ed". To provide both of them with acces to the unix socket we do the following: * 1. Owner ID is set to the job owner. * 2. Group ID corresponds to slurmstepd. * 3. Set 0770 access mode */ if (0 != mkdir(pmixp_info_tmpdir_lib(), rights) ) { PMIXP_ERROR_STD("Cannot create directory \"%s\"", pmixp_info_tmpdir_lib()); return errno; } /* There might be umask that will drop essential rights. Fix it explicitly. * TODO: is there more elegant solution? */ if (chmod(pmixp_info_tmpdir_lib(), rights) < 0) { error("chown(%s): %m", pmixp_info_tmpdir_lib()); return errno; } if (chown(pmixp_info_tmpdir_lib(), (uid_t) pmixp_info_jobuid(), (gid_t) -1) < 0) { error("chown(%s): %m", pmixp_info_tmpdir_lib()); return errno; } setenv(PMIXP_PMIXLIB_TMPDIR, pmixp_info_tmpdir_lib(), 1); PMIXP_ALLOC_KEY(kvp, PMIX_USERID); PMIX_VAL_SET(&kvp->value, uint32_t, pmixp_info_jobuid()); /* setup the server library */ if (PMIX_SUCCESS != (rc = PMIx_server_init(&_slurm_pmix_cb, kvp, 1))) { PMIXP_ERROR_STD("PMIx_server_init failed with error %d\n", rc); return SLURM_ERROR; } PMIXP_FREE_KEY(kvp); /* if( pmixp_fixrights(pmixp_info_tmpdir_lib(), (uid_t) pmixp_info_jobuid(), rights) ){ } */ /* register the errhandler */ PMIx_Register_errhandler(NULL, 0, errhandler, errhandler_reg_callbk, NULL); return 0; }
int pmixp_libpmix_finalize(void) { int rc = SLURM_SUCCESS, rc1; /* deregister the errhandler */ PMIx_Deregister_errhandler(0, op_callbk, NULL); if (PMIX_SUCCESS != PMIx_server_finalize()) { rc = SLURM_ERROR; } rc1 = pmixp_rmdir_recursively(pmixp_info_tmpdir_lib()); if (0 == rc) { /* return only one error :) */ rc = rc1; } return rc; }