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;
}
