From 68f7798ebefc007db62053c199d0b37a87532e2e Mon Sep 17 00:00:00 2001
From: Aditi Gaur <agaur@lbl.gov>
Date: Thu, 29 Oct 2020 10:03:11 -0700
Subject: [PATCH] Add a 'tmpfs' job_container plugin
Adds a 'tmpfs' job container plugin that moves jobs
into their own namespace consisting of a private /tmp and a
private /dev/shm. The plugin also provides the ability to have
a namespace.conf that sets the basepath for the plugin to
create the bind mounts as well as an initialization script that
can be used to set up the namespace.
Signed-off-by: Aditi Gaur <agaur@lbl.gov>
---
configure | 3 +-
configure.ac | 1 +
src/plugins/job_container/Makefile.am | 2 +-
src/plugins/job_container/Makefile.in | 2 +-
src/plugins/job_container/tmpfs/Makefile.am | 14 +
src/plugins/job_container/tmpfs/Makefile.in | 814 ++++++++++++++++++
.../job_container/tmpfs/job_container_tmpfs.c | 683 +++++++++++++++
src/plugins/job_container/tmpfs/read_nsconf.c | 163 ++++
src/plugins/job_container/tmpfs/read_nsconf.h | 56 ++
src/slurmd/slurmstepd/mgr.c | 41 +-
10 files changed, 1775 insertions(+), 4 deletions(-)
create mode 100644 src/plugins/job_container/tmpfs/Makefile.am
create mode 100644 src/plugins/job_container/tmpfs/Makefile.in
create mode 100644 src/plugins/job_container/tmpfs/job_container_tmpfs.c
create mode 100644 src/plugins/job_container/tmpfs/read_nsconf.c
create mode 100644 src/plugins/job_container/tmpfs/read_nsconf.h
diff --git a/configure b/configure
index 691e3647ece..e0ea9ae58a6 100755
--- a/configure
+++ b/configure
@@ -25215,7 +25215,7 @@ $as_echo "${x_ac_deprecated=no}" >&6; }
-ac_config_files="$ac_config_files Makefile auxdir/Makefile contribs/Makefile contribs/cray/Makefile contribs/cray/csm/Makefile contribs/cray/slurmsmwd/Makefile contribs/lua/Makefile contribs/mic/Makefile contribs/nss_slurm/Makefile contribs/pam/Makefile contribs/pam_slurm_adopt/Makefile contribs/perlapi/Makefile contribs/perlapi/libslurm/Makefile contribs/perlapi/libslurm/perl/Makefile.PL contribs/perlapi/libslurmdb/Makefile contribs/perlapi/libslurmdb/perl/Makefile.PL contribs/seff/Makefile contribs/torque/Makefile contribs/openlava/Makefile contribs/sgather/Makefile contribs/sgi/Makefile contribs/sjobexit/Makefile contribs/pmi/Makefile contribs/pmi2/Makefile doc/Makefile doc/man/Makefile doc/man/man1/Makefile doc/man/man3/Makefile doc/man/man5/Makefile doc/man/man8/Makefile doc/html/Makefile doc/html/configurator.html doc/html/configurator.easy.html etc/Makefile src/Makefile src/api/Makefile src/bcast/Makefile src/common/Makefile src/database/Makefile src/lua/Makefile src/sacct/Makefile src/sacctmgr/Makefile src/sreport/Makefile src/salloc/Makefile src/sbatch/Makefile src/sbcast/Makefile src/sattach/Makefile src/scancel/Makefile src/scontrol/Makefile src/scrontab/Makefile src/sdiag/Makefile src/sinfo/Makefile src/slurmctld/Makefile src/slurmd/Makefile src/slurmd/common/Makefile src/slurmd/slurmd/Makefile src/slurmd/slurmstepd/Makefile src/slurmdbd/Makefile src/slurmrestd/Makefile src/slurmrestd/plugins/Makefile src/slurmrestd/plugins/auth/Makefile src/slurmrestd/plugins/auth/jwt/Makefile src/slurmrestd/plugins/auth/local/Makefile src/slurmrestd/plugins/openapi/Makefile src/slurmrestd/plugins/openapi/v0.0.35/Makefile src/slurmrestd/plugins/openapi/v0.0.36/Makefile src/slurmrestd/plugins/openapi/dbv0.0.36/Makefile src/sprio/Makefile src/squeue/Makefile src/srun/Makefile src/srun/libsrun/Makefile src/sshare/Makefile src/sstat/Makefile src/strigger/Makefile src/sview/Makefile src/plugins/Makefile src/plugins/accounting_storage/Makefile src/plugins/accounting_storage/common/Makefile src/plugins/accounting_storage/mysql/Makefile src/plugins/accounting_storage/none/Makefile src/plugins/accounting_storage/slurmdbd/Makefile src/plugins/acct_gather_energy/Makefile src/plugins/acct_gather_energy/ibmaem/Makefile src/plugins/acct_gather_energy/ipmi/Makefile src/plugins/acct_gather_energy/none/Makefile src/plugins/acct_gather_energy/pm_counters/Makefile src/plugins/acct_gather_energy/rapl/Makefile src/plugins/acct_gather_energy/rsmi/Makefile src/plugins/acct_gather_energy/xcc/Makefile src/plugins/acct_gather_interconnect/Makefile src/plugins/acct_gather_interconnect/ofed/Makefile src/plugins/acct_gather_interconnect/none/Makefile src/plugins/acct_gather_filesystem/Makefile src/plugins/acct_gather_filesystem/lustre/Makefile src/plugins/acct_gather_filesystem/none/Makefile src/plugins/acct_gather_profile/Makefile src/plugins/acct_gather_profile/hdf5/Makefile src/plugins/acct_gather_profile/hdf5/sh5util/Makefile src/plugins/acct_gather_profile/influxdb/Makefile src/plugins/acct_gather_profile/none/Makefile src/plugins/auth/Makefile src/plugins/auth/jwt/Makefile src/plugins/auth/munge/Makefile src/plugins/auth/none/Makefile src/plugins/burst_buffer/Makefile src/plugins/burst_buffer/common/Makefile src/plugins/burst_buffer/datawarp/Makefile src/plugins/burst_buffer/generic/Makefile src/plugins/cli_filter/Makefile src/plugins/cli_filter/common/Makefile src/plugins/cli_filter/lua/Makefile src/plugins/cli_filter/none/Makefile src/plugins/cli_filter/syslog/Makefile src/plugins/cli_filter/user_defaults/Makefile src/plugins/core_spec/Makefile src/plugins/core_spec/cray_aries/Makefile src/plugins/core_spec/none/Makefile src/plugins/cred/Makefile src/plugins/cred/munge/Makefile src/plugins/cred/none/Makefile src/plugins/ext_sensors/Makefile src/plugins/ext_sensors/rrd/Makefile src/plugins/ext_sensors/none/Makefile src/plugins/gpu/Makefile src/plugins/gpu/generic/Makefile src/plugins/gpu/nvml/Makefile src/plugins/gpu/rsmi/Makefile src/plugins/gres/Makefile src/plugins/gres/common/Makefile src/plugins/gres/gpu/Makefile src/plugins/gres/nic/Makefile src/plugins/gres/mic/Makefile src/plugins/gres/mps/Makefile src/plugins/jobacct_gather/Makefile src/plugins/jobacct_gather/common/Makefile src/plugins/jobacct_gather/linux/Makefile src/plugins/jobacct_gather/cgroup/Makefile src/plugins/jobacct_gather/none/Makefile src/plugins/jobcomp/Makefile src/plugins/jobcomp/elasticsearch/Makefile src/plugins/jobcomp/filetxt/Makefile src/plugins/jobcomp/lua/Makefile src/plugins/jobcomp/none/Makefile src/plugins/jobcomp/script/Makefile src/plugins/jobcomp/mysql/Makefile src/plugins/job_container/Makefile src/plugins/job_container/cncu/Makefile src/plugins/job_container/none/Makefile src/plugins/job_submit/Makefile src/plugins/job_submit/all_partitions/Makefile src/plugins/job_submit/cray_aries/Makefile src/plugins/job_submit/defaults/Makefile src/plugins/job_submit/logging/Makefile src/plugins/job_submit/lua/Makefile src/plugins/job_submit/partition/Makefile src/plugins/job_submit/pbs/Makefile src/plugins/job_submit/require_timelimit/Makefile src/plugins/job_submit/throttle/Makefile src/plugins/launch/Makefile src/plugins/launch/slurm/Makefile src/plugins/mcs/Makefile src/plugins/mcs/account/Makefile src/plugins/mcs/group/Makefile src/plugins/mcs/none/Makefile src/plugins/mcs/user/Makefile src/plugins/node_features/Makefile src/plugins/node_features/knl_cray/Makefile src/plugins/node_features/knl_generic/Makefile src/plugins/power/Makefile src/plugins/power/common/Makefile src/plugins/power/cray_aries/Makefile src/plugins/power/none/Makefile src/plugins/preempt/Makefile src/plugins/preempt/none/Makefile src/plugins/preempt/partition_prio/Makefile src/plugins/preempt/qos/Makefile src/plugins/priority/Makefile src/plugins/priority/basic/Makefile src/plugins/priority/multifactor/Makefile src/plugins/prep/Makefile src/plugins/prep/script/Makefile src/plugins/proctrack/Makefile src/plugins/proctrack/cray_aries/Makefile src/plugins/proctrack/cgroup/Makefile src/plugins/proctrack/pgid/Makefile src/plugins/proctrack/linuxproc/Makefile src/plugins/route/Makefile src/plugins/route/default/Makefile src/plugins/route/topology/Makefile src/plugins/sched/Makefile src/plugins/sched/backfill/Makefile src/plugins/sched/builtin/Makefile src/plugins/sched/hold/Makefile src/plugins/select/Makefile src/plugins/select/cons_common/Makefile src/plugins/select/cons_res/Makefile src/plugins/select/cons_tres/Makefile src/plugins/select/cray_aries/Makefile src/plugins/select/linear/Makefile src/plugins/select/other/Makefile src/plugins/site_factor/Makefile src/plugins/site_factor/none/Makefile src/plugins/slurmctld/Makefile src/plugins/slurmctld/nonstop/Makefile src/plugins/switch/Makefile src/plugins/switch/cray_aries/Makefile src/plugins/switch/none/Makefile src/plugins/mpi/Makefile src/plugins/mpi/cray_shasta/Makefile src/plugins/mpi/none/Makefile src/plugins/mpi/pmi2/Makefile src/plugins/mpi/pmix/Makefile src/plugins/task/Makefile src/plugins/task/affinity/Makefile src/plugins/task/cgroup/Makefile src/plugins/task/cray_aries/Makefile src/plugins/task/none/Makefile src/plugins/topology/Makefile src/plugins/topology/3d_torus/Makefile src/plugins/topology/hypercube/Makefile src/plugins/topology/none/Makefile src/plugins/topology/tree/Makefile testsuite/Makefile testsuite/expect/Makefile testsuite/slurm_unit/Makefile testsuite/slurm_unit/api/Makefile testsuite/slurm_unit/api/manual/Makefile testsuite/slurm_unit/common/Makefile testsuite/slurm_unit/common/slurm_protocol_pack/Makefile testsuite/slurm_unit/common/slurmdb_pack/Makefile testsuite/slurm_unit/common/bitstring/Makefile testsuite/slurm_unit/slurmd/Makefile testsuite/slurm_unit/slurmd/common/Makefile"
+ac_config_files="$ac_config_files Makefile auxdir/Makefile contribs/Makefile contribs/cray/Makefile contribs/cray/csm/Makefile contribs/cray/slurmsmwd/Makefile contribs/lua/Makefile contribs/mic/Makefile contribs/nss_slurm/Makefile contribs/pam/Makefile contribs/pam_slurm_adopt/Makefile contribs/perlapi/Makefile contribs/perlapi/libslurm/Makefile contribs/perlapi/libslurm/perl/Makefile.PL contribs/perlapi/libslurmdb/Makefile contribs/perlapi/libslurmdb/perl/Makefile.PL contribs/seff/Makefile contribs/torque/Makefile contribs/openlava/Makefile contribs/sgather/Makefile contribs/sgi/Makefile contribs/sjobexit/Makefile contribs/pmi/Makefile contribs/pmi2/Makefile doc/Makefile doc/man/Makefile doc/man/man1/Makefile doc/man/man3/Makefile doc/man/man5/Makefile doc/man/man8/Makefile doc/html/Makefile doc/html/configurator.html doc/html/configurator.easy.html etc/Makefile src/Makefile src/api/Makefile src/bcast/Makefile src/common/Makefile src/database/Makefile src/lua/Makefile src/sacct/Makefile src/sacctmgr/Makefile src/sreport/Makefile src/salloc/Makefile src/sbatch/Makefile src/sbcast/Makefile src/sattach/Makefile src/scancel/Makefile src/scontrol/Makefile src/scrontab/Makefile src/sdiag/Makefile src/sinfo/Makefile src/slurmctld/Makefile src/slurmd/Makefile src/slurmd/common/Makefile src/slurmd/slurmd/Makefile src/slurmd/slurmstepd/Makefile src/slurmdbd/Makefile src/slurmrestd/Makefile src/slurmrestd/plugins/Makefile src/slurmrestd/plugins/auth/Makefile src/slurmrestd/plugins/auth/jwt/Makefile src/slurmrestd/plugins/auth/local/Makefile src/slurmrestd/plugins/openapi/Makefile src/slurmrestd/plugins/openapi/v0.0.35/Makefile src/slurmrestd/plugins/openapi/v0.0.36/Makefile src/slurmrestd/plugins/openapi/dbv0.0.36/Makefile src/sprio/Makefile src/squeue/Makefile src/srun/Makefile src/srun/libsrun/Makefile src/sshare/Makefile src/sstat/Makefile src/strigger/Makefile src/sview/Makefile src/plugins/Makefile src/plugins/accounting_storage/Makefile src/plugins/accounting_storage/common/Makefile src/plugins/accounting_storage/mysql/Makefile src/plugins/accounting_storage/none/Makefile src/plugins/accounting_storage/slurmdbd/Makefile src/plugins/acct_gather_energy/Makefile src/plugins/acct_gather_energy/ibmaem/Makefile src/plugins/acct_gather_energy/ipmi/Makefile src/plugins/acct_gather_energy/none/Makefile src/plugins/acct_gather_energy/pm_counters/Makefile src/plugins/acct_gather_energy/rapl/Makefile src/plugins/acct_gather_energy/rsmi/Makefile src/plugins/acct_gather_energy/xcc/Makefile src/plugins/acct_gather_interconnect/Makefile src/plugins/acct_gather_interconnect/ofed/Makefile src/plugins/acct_gather_interconnect/none/Makefile src/plugins/acct_gather_filesystem/Makefile src/plugins/acct_gather_filesystem/lustre/Makefile src/plugins/acct_gather_filesystem/none/Makefile src/plugins/acct_gather_profile/Makefile src/plugins/acct_gather_profile/hdf5/Makefile src/plugins/acct_gather_profile/hdf5/sh5util/Makefile src/plugins/acct_gather_profile/influxdb/Makefile src/plugins/acct_gather_profile/none/Makefile src/plugins/auth/Makefile src/plugins/auth/jwt/Makefile src/plugins/auth/munge/Makefile src/plugins/auth/none/Makefile src/plugins/burst_buffer/Makefile src/plugins/burst_buffer/common/Makefile src/plugins/burst_buffer/datawarp/Makefile src/plugins/burst_buffer/generic/Makefile src/plugins/cli_filter/Makefile src/plugins/cli_filter/common/Makefile src/plugins/cli_filter/lua/Makefile src/plugins/cli_filter/none/Makefile src/plugins/cli_filter/syslog/Makefile src/plugins/cli_filter/user_defaults/Makefile src/plugins/core_spec/Makefile src/plugins/core_spec/cray_aries/Makefile src/plugins/core_spec/none/Makefile src/plugins/cred/Makefile src/plugins/cred/munge/Makefile src/plugins/cred/none/Makefile src/plugins/ext_sensors/Makefile src/plugins/ext_sensors/rrd/Makefile src/plugins/ext_sensors/none/Makefile src/plugins/gpu/Makefile src/plugins/gpu/generic/Makefile src/plugins/gpu/nvml/Makefile src/plugins/gpu/rsmi/Makefile src/plugins/gres/Makefile src/plugins/gres/common/Makefile src/plugins/gres/gpu/Makefile src/plugins/gres/nic/Makefile src/plugins/gres/mic/Makefile src/plugins/gres/mps/Makefile src/plugins/jobacct_gather/Makefile src/plugins/jobacct_gather/common/Makefile src/plugins/jobacct_gather/linux/Makefile src/plugins/jobacct_gather/cgroup/Makefile src/plugins/jobacct_gather/none/Makefile src/plugins/jobcomp/Makefile src/plugins/jobcomp/elasticsearch/Makefile src/plugins/jobcomp/filetxt/Makefile src/plugins/jobcomp/lua/Makefile src/plugins/jobcomp/none/Makefile src/plugins/jobcomp/script/Makefile src/plugins/jobcomp/mysql/Makefile src/plugins/job_container/Makefile src/plugins/job_container/cncu/Makefile src/plugins/job_container/none/Makefile src/plugins/job_container/tmpfs/Makefile src/plugins/job_submit/Makefile src/plugins/job_submit/all_partitions/Makefile src/plugins/job_submit/cray_aries/Makefile src/plugins/job_submit/defaults/Makefile src/plugins/job_submit/logging/Makefile src/plugins/job_submit/lua/Makefile src/plugins/job_submit/partition/Makefile src/plugins/job_submit/pbs/Makefile src/plugins/job_submit/require_timelimit/Makefile src/plugins/job_submit/throttle/Makefile src/plugins/launch/Makefile src/plugins/launch/slurm/Makefile src/plugins/mcs/Makefile src/plugins/mcs/account/Makefile src/plugins/mcs/group/Makefile src/plugins/mcs/none/Makefile src/plugins/mcs/user/Makefile src/plugins/node_features/Makefile src/plugins/node_features/knl_cray/Makefile src/plugins/node_features/knl_generic/Makefile src/plugins/power/Makefile src/plugins/power/common/Makefile src/plugins/power/cray_aries/Makefile src/plugins/power/none/Makefile src/plugins/preempt/Makefile src/plugins/preempt/none/Makefile src/plugins/preempt/partition_prio/Makefile src/plugins/preempt/qos/Makefile src/plugins/priority/Makefile src/plugins/priority/basic/Makefile src/plugins/priority/multifactor/Makefile src/plugins/prep/Makefile src/plugins/prep/script/Makefile src/plugins/proctrack/Makefile src/plugins/proctrack/cray_aries/Makefile src/plugins/proctrack/cgroup/Makefile src/plugins/proctrack/pgid/Makefile src/plugins/proctrack/linuxproc/Makefile src/plugins/route/Makefile src/plugins/route/default/Makefile src/plugins/route/topology/Makefile src/plugins/sched/Makefile src/plugins/sched/backfill/Makefile src/plugins/sched/builtin/Makefile src/plugins/sched/hold/Makefile src/plugins/select/Makefile src/plugins/select/cons_common/Makefile src/plugins/select/cons_res/Makefile src/plugins/select/cons_tres/Makefile src/plugins/select/cray_aries/Makefile src/plugins/select/linear/Makefile src/plugins/select/other/Makefile src/plugins/site_factor/Makefile src/plugins/site_factor/none/Makefile src/plugins/slurmctld/Makefile src/plugins/slurmctld/nonstop/Makefile src/plugins/switch/Makefile src/plugins/switch/cray_aries/Makefile src/plugins/switch/none/Makefile src/plugins/mpi/Makefile src/plugins/mpi/cray_shasta/Makefile src/plugins/mpi/none/Makefile src/plugins/mpi/pmi2/Makefile src/plugins/mpi/pmix/Makefile src/plugins/task/Makefile src/plugins/task/affinity/Makefile src/plugins/task/cgroup/Makefile src/plugins/task/cray_aries/Makefile src/plugins/task/none/Makefile src/plugins/topology/Makefile src/plugins/topology/3d_torus/Makefile src/plugins/topology/hypercube/Makefile src/plugins/topology/none/Makefile src/plugins/topology/tree/Makefile testsuite/Makefile testsuite/expect/Makefile testsuite/slurm_unit/Makefile testsuite/slurm_unit/api/Makefile testsuite/slurm_unit/api/manual/Makefile testsuite/slurm_unit/common/Makefile testsuite/slurm_unit/common/slurm_protocol_pack/Makefile testsuite/slurm_unit/common/slurmdb_pack/Makefile testsuite/slurm_unit/common/bitstring/Makefile testsuite/slurm_unit/slurmd/Makefile testsuite/slurm_unit/slurmd/common/Makefile"
cat >confcache <<\_ACEOF
@@ -26630,6 +26630,7 @@ do
"src/plugins/job_container/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_container/Makefile" ;;
"src/plugins/job_container/cncu/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_container/cncu/Makefile" ;;
"src/plugins/job_container/none/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_container/none/Makefile" ;;
+ "src/plugins/job_container/tmpfs/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_container/tmpfs/Makefile" ;;
"src/plugins/job_submit/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_submit/Makefile" ;;
"src/plugins/job_submit/all_partitions/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_submit/all_partitions/Makefile" ;;
"src/plugins/job_submit/cray_aries/Makefile") CONFIG_FILES="$CONFIG_FILES src/plugins/job_submit/cray_aries/Makefile" ;;
diff --git a/configure.ac b/configure.ac
index d69d47348a3..d55e537fa3d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -535,6 +535,7 @@ AC_CONFIG_FILES([Makefile
src/plugins/job_container/Makefile
src/plugins/job_container/cncu/Makefile
src/plugins/job_container/none/Makefile
+ src/plugins/job_container/tmpfs/Makefile
src/plugins/job_submit/Makefile
src/plugins/job_submit/all_partitions/Makefile
src/plugins/job_submit/cray_aries/Makefile
diff --git a/src/plugins/job_container/Makefile.am b/src/plugins/job_container/Makefile.am
index 8e1960a456c..1075192ca29 100644
--- a/src/plugins/job_container/Makefile.am
+++ b/src/plugins/job_container/Makefile.am
@@ -1,3 +1,3 @@
# Makefile for job_container plugins
-SUBDIRS = cncu none
+SUBDIRS = cncu none tmpfs
diff --git a/src/plugins/job_container/Makefile.in b/src/plugins/job_container/Makefile.in
index c7fcf5018e0..d85b965f7a6 100644
--- a/src/plugins/job_container/Makefile.in
+++ b/src/plugins/job_container/Makefile.in
@@ -454,7 +454,7 @@ target_vendor = @target_vendor@
top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
-SUBDIRS = cncu none
+SUBDIRS = cncu none tmpfs
all: all-recursive
.SUFFIXES:
diff --git a/src/plugins/job_container/tmpfs/Makefile.am b/src/plugins/job_container/tmpfs/Makefile.am
new file mode 100644
index 00000000000..c24aa5e4610
--- /dev/null
+++ b/src/plugins/job_container/tmpfs/Makefile.am
@@ -0,0 +1,14 @@
+# Makefile for job_container/tmpfs plugin
+
+AUTOMAKE_OPTIONS = foreign
+
+PLUGIN_FLAGS = -module -avoid-version --export-dynamic
+
+AM_CPPFLAGS = -DSLURM_PLUGIN_DEBUG -I$(top_srcdir) -I$(top_srcdir)/src/common
+
+pkglib_LTLIBRARIES = job_container_tmpfs.la
+
+# job_container/none plugin.
+job_container_tmpfs_la_SOURCES = job_container_tmpfs.c read_nsconf.c \
+ read_nsconf.h
+job_container_tmpfs_la_LDFLAGS = $(PLUGIN_FLAGS)
diff --git a/src/plugins/job_container/tmpfs/Makefile.in b/src/plugins/job_container/tmpfs/Makefile.in
new file mode 100644
index 00000000000..cbac2e8b92d
--- /dev/null
+++ b/src/plugins/job_container/tmpfs/Makefile.in
@@ -0,0 +1,814 @@
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Makefile for job_container/tmpfs plugin
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
+ true; \
+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
+ esac; \
+ has_opt=no; \
+ sane_makeflags=$$MAKEFLAGS; \
+ if $(am__is_gnu_make); then \
+ sane_makeflags=$$MFLAGS; \
+ else \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ bs=\\; \
+ sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+ | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
+ esac; \
+ fi; \
+ skip_next=no; \
+ strip_trailopt () \
+ { \
+ flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+ }; \
+ for flg in $$sane_makeflags; do \
+ test $$skip_next = yes && { skip_next=no; continue; }; \
+ case $$flg in \
+ *=*|--*) continue;; \
+ -*I) strip_trailopt 'I'; skip_next=yes;; \
+ -*I?*) strip_trailopt 'I';; \
+ -*O) strip_trailopt 'O'; skip_next=yes;; \
+ -*O?*) strip_trailopt 'O';; \
+ -*l) strip_trailopt 'l'; skip_next=yes;; \
+ -*l?*) strip_trailopt 'l';; \
+ -[dEDm]) skip_next=yes;; \
+ -[JT]) skip_next=yes;; \
+ esac; \
+ case $$flg in \
+ *$$target_option*) has_opt=yes; break;; \
+ esac; \
+ done; \
+ test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
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+ $(AM_LDFLAGS) $(LDFLAGS) -o $@
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+'
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+
+# job_container/none plugin.
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+ read_nsconf.h
+
+job_container_tmpfs_la_LDFLAGS = $(PLUGIN_FLAGS)
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+
+.SUFFIXES:
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+ exit 1;; \
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+ @case '$?' in \
+ *config.status*) \
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+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+install-pkglibLTLIBRARIES: $(pkglib_LTLIBRARIES)
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+ list2=; for p in $$list; do \
+ if test -f $$p; then \
+ list2="$$list2 $$p"; \
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+ test -z "$$list2" || { \
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+ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(pkglibdir)"; \
+ }
+
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+ for p in $$list; do \
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+ done
+
+clean-pkglibLTLIBRARIES:
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+ @list='$(pkglib_LTLIBRARIES)'; \
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+ sort -u`; \
+ test -z "$$locs" || { \
+ echo rm -f $${locs}; \
+ rm -f $${locs}; \
+ }
+
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+ $(AM_V_CCLD)$(job_container_tmpfs_la_LINK) -rpath $(pkglibdir) $(job_container_tmpfs_la_OBJECTS) $(job_container_tmpfs_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT)
+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/job_container_tmpfs.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/read_nsconf.Plo@am__quote@ # am--include-marker
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+
+ID: $(am__tagged_files)
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+ $(am__define_uniq_tagged_files); \
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+ for i in $$list; do \
+ if test -f "$$i"; then \
+ echo "$(subdir)/$$i"; \
+ else \
+ echo "$$sdir/$$i"; \
+ fi; \
+ done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+check-am: all-am
+check: check-am
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+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
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+
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/plugins/job_container/tmpfs/job_container_tmpfs.c b/src/plugins/job_container/tmpfs/job_container_tmpfs.c
new file mode 100644
index 00000000000..763cb29a4b5
--- /dev/null
+++ b/src/plugins/job_container/tmpfs/job_container_tmpfs.c
@@ -0,0 +1,683 @@
+/*****************************************************************************\
+ * job_container_tmpfs.c - Define job container plugin for creating a
+ * temporary mount namespace for the job, to provide
+ * quota based access to node local memory.
+ *****************************************************************************
+ * Copyright (C) 2019-2021 Regents of the University of California
+ * Produced at Lawrence Berkeley National Laboratory
+ * Written by Aditi Gaur <agaur@lbl.gov>
+ * All rights reserved.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <https://slurm.schedmd.com/>.
+ * Please also read the included file: DISCLAIMER.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+
+#define _GNU_SOURCE
+#define _XOPEN_SOURCE 500 /* For ftw.h */
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <sys/mman.h>
+#include <sched.h>
+#include <fcntl.h>
+#include <ftw.h>
+#include <sys/mount.h>
+#include <linux/limits.h>
+#include <semaphore.h>
+
+#include "src/common/slurm_xlator.h"
+#include "src/common/log.h"
+#include "src/common/run_command.h"
+
+#include "read_nsconf.h"
+
+#if defined (__APPLE__)
+extern slurmd_conf_t *conf __attribute__((weak_import));
+#else
+slurmd_conf_t *conf = NULL;
+#endif
+
+const char plugin_name[] = "job_container tmpfs plugin";
+const char plugin_type[] = "job_container/tmpfs";
+const uint32_t plugin_version = SLURM_VERSION_NUMBER;
+
+static slurm_ns_conf_t *ns_conf = NULL;
+
+static int _create_paths(uint32_t job_id,
+ char *job_mount,
+ char *ns_holder,
+ char *src_bind,
+ char *active)
+{
+ ns_conf = get_slurm_ns_conf();
+
+ if (!ns_conf) {
+ error("%s: Configuration not read correctly: did namespace.conf not exist?",
+ __func__);
+ return SLURM_ERROR;
+ }
+
+ xassert(job_mount);
+
+ if (snprintf(job_mount, PATH_MAX, "%s/%d", ns_conf->basepath, job_id)
+ >= PATH_MAX) {
+ error("%s: Unable to build job %u mount path: %m",
+ __func__, job_id);
+ return SLURM_ERROR;
+ }
+
+ if (ns_holder) {
+ if (snprintf(ns_holder, PATH_MAX, "%s/.ns", job_mount)
+ >= PATH_MAX) {
+ error("%s: Unable to build job %u ns_holder path: %m",
+ __func__, job_id);
+ return SLURM_ERROR;
+ }
+ }
+
+ if (src_bind) {
+ if (snprintf(src_bind, PATH_MAX, "%s/.%u", job_mount, job_id)
+ >= PATH_MAX) {
+ error("%s: Unable to build job %u src_bind path: %m",
+ __func__, job_id);
+ return SLURM_ERROR;
+ }
+ }
+
+ if (active) {
+ if (snprintf(active, PATH_MAX, "%s/.active", job_mount)
+ >= PATH_MAX) {
+ error("%s: Unable to build job %u active path: %m",
+ __func__, job_id);
+ return SLURM_ERROR;
+ }
+ }
+
+ return SLURM_SUCCESS;
+}
+
+extern void container_p_reconfig(void)
+{
+ return;
+}
+
+/*
+ * init() is called when the plugin is loaded, before any other functions
+ * are called. Put global initialization here.
+ */
+extern int init(void)
+{
+ debug("%s loaded", plugin_name);
+
+ return SLURM_SUCCESS;
+}
+
+/*
+ * fini() is called when the plugin is removed. Clear any allocated
+ * storage here.
+ */
+extern int fini(void)
+{
+ int rc = 0;
+
+ debug("%s unloaded", plugin_name);
+
+#ifdef HAVE_NATIVE_CRAY
+ return SLURM_SUCCESS;
+#endif
+
+ ns_conf = get_slurm_ns_conf();
+ if (!ns_conf) {
+ error("%s: Configuration not loaded", __func__);
+ return SLURM_ERROR;
+ }
+ rc = umount2(ns_conf->basepath, MNT_DETACH);
+ if (rc) {
+ error("%s: umount2: %s failed: %s",
+ __func__, ns_conf->basepath, strerror(errno));
+ return SLURM_ERROR;
+ }
+ free_ns_conf();
+
+ return SLURM_SUCCESS;
+}
+
+extern int container_p_restore(char *dir_name, bool recover)
+{
+ struct stat stbuf;
+
+#ifdef HAVE_NATIVE_CRAY
+ return SLURM_SUCCESS;
+#endif
+
+ ns_conf = get_slurm_ns_conf();
+ if (!ns_conf) {
+ error("%s: Configuration not loaded", __func__);
+ return SLURM_ERROR;
+ }
+
+ debug("namepsace.conf read successfully");
+
+ if (stat(ns_conf->basepath, &stbuf)) {
+ error("%s: stat failed %s, %s",
+ __func__, ns_conf->basepath, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ /*
+ * MS_BIND mountflag would make mount() ignore all other mountflags
+ * except MS_REC. We need MS_PRIVATE mountflag as well to make the
+ * mount (as well as all mounts inside it) private, which needs to be
+ * done by calling mount() a second time with MS_PRIVATE and MS_REC
+ * flags.
+ */
+ if (mount(ns_conf->basepath, ns_conf->basepath, "xfs", MS_BIND, NULL)) {
+ error("%s: Initial base mount failed, %s",
+ __func__, strerror(errno));
+ return SLURM_ERROR;
+ }
+ if (mount(ns_conf->basepath, ns_conf->basepath, "xfs",
+ MS_PRIVATE | MS_REC, NULL)) {
+ error("%s: Initial base mount failed, %s",
+ __func__, strerror(errno));
+ return SLURM_ERROR;
+ }
+ debug3("tmpfs: Base namespace created");
+
+ return SLURM_SUCCESS;
+}
+
+static int _mount_private_tmp(char *path)
+{
+ if (!path) {
+ error("%s: cannot mount /tmp", __func__);
+ return -1;
+ }
+ if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL)) {
+ error("%s: making root private: failed: %s",
+ __func__, strerror(errno));
+ return -1;
+ }
+ if (mount(path, "/tmp", NULL, MS_BIND|MS_REC, NULL)) {
+ error("%s: /tmp mount failed, %s",
+ __func__, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int _mount_private_shm(void)
+{
+ int rc = 0;
+
+ rc = umount("/dev/shm");
+ if (rc && errno != EINVAL) {
+ error("%s: umount /dev/shm failed: %s\n",
+ __func__, strerror(errno));
+ return rc;
+ }
+ rc = mount("tmpfs", "/dev/shm", "tmpfs", 0, NULL);
+ if (rc) {
+ error("%s: mounting private /dev/shm failed: %s\n",
+ __func__, strerror(errno));
+ return -1;
+ }
+ return rc;
+}
+
+static int _rm_data(const char *path, const struct stat *st_buf,
+ int type, struct FTW *ftwbuf)
+{
+ if (remove(path) < 0) {
+ if (type == FTW_NS)
+ error("%s: Unreachable file of FTW_NS type: %s",
+ __func__, path);
+ if (type == FTW_DNR)
+ error("%s: Unreadable directory: %s", __func__, path);
+ error("%s: could not remove path: %s: %s",
+ __func__, path, strerror(errno));
+ return errno;
+ }
+ return 0;
+}
+
+extern int container_p_create(uint32_t job_id)
+{
+ char job_mount[PATH_MAX];
+ char ns_holder[PATH_MAX];
+ char src_bind[PATH_MAX];
+ char active[PATH_MAX];
+ char *result = NULL;
+ int fd;
+ int rc = 0;
+ sem_t *sem1 = NULL;
+ sem_t *sem2 = NULL;
+ pid_t cpid;
+
+#ifdef HAVE_NATIVE_CRAY
+ return 0;
+#endif
+
+ if (_create_paths(job_id, job_mount, ns_holder, src_bind, active)
+ != SLURM_SUCCESS) {
+ return -1;
+ }
+
+ rc = mkdir(job_mount, 0700);
+ if (rc && errno != EEXIST) {
+ error("%s: mkdir %s failed: %s",
+ __func__, job_mount, strerror(errno));
+ return -1;
+ } else if (rc && errno == EEXIST) {
+ /* stat to see if .active exists */
+ struct stat st;
+ rc = stat(active, &st);
+ if (rc) {
+ /*
+ * If .active does not exist, then the directory for
+ * the job exists but namespace is not active. This
+ * should not happen normally. Throw error and exit
+ */
+ error("%s: Dir %s exists but %s was not found, exiting",
+ __func__, job_mount, active);
+ goto exit2;
+ }
+ /*
+ * If it exists, this is coming from sbcast likely,
+ * exit as success
+ */
+ rc = 0;
+ goto exit2;
+ }
+
+ fd = open(ns_holder, O_CREAT|O_RDWR, S_IRWXU);
+ if (fd == -1) {
+ error("%s: open failed %s: %s",
+ __func__, ns_holder, strerror(errno));
+ rc = -1;
+ goto exit2;
+ }
+ close(fd);
+
+ /* run any initialization script- if any*/
+ if (ns_conf->initscript) {
+ result = run_command("initscript", ns_conf->initscript, NULL,
+ 10000, 0, &rc);
+ if (rc) {
+ error("%s: init script: %s failed",
+ __func__, ns_conf->initscript);
+ goto exit2;
+ } else {
+ debug3("initscript stdout: %s", result);
+ }
+ }
+
+ rc = mkdir(src_bind, 0700);
+ if (rc) {
+ error("%s: mkdir failed %s, %s",
+ __func__, src_bind, strerror(errno));
+ goto exit2;
+ }
+
+ sem1 = mmap(NULL, sizeof(*sem1), PROT_READ|PROT_WRITE,
+ MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+ if (sem1 == MAP_FAILED) {
+ error("%s: mmap failed: %s", __func__, strerror(errno));
+ rc = -1;
+ goto exit2;
+ }
+
+ sem2 = mmap(NULL, sizeof(*sem2), PROT_READ|PROT_WRITE,
+ MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+ if (sem2 == MAP_FAILED) {
+ error("%s: mmap failed: %s", __func__, strerror(errno));
+ munmap(sem1, sizeof(*sem1));
+ sem_destroy(sem1);
+ rc = -1;
+ goto exit2;
+ }
+
+ rc = sem_init(sem1, 1, 0);
+ if (rc) {
+ error("%s: sem_init: %s", __func__, strerror(errno));
+ goto exit1;
+ }
+ rc = sem_init(sem2, 1, 0);
+ if (rc) {
+ error("%s: sem_init: %s", __func__, strerror(errno));
+ goto exit1;
+ }
+
+ cpid = fork();
+
+ if (cpid == -1) {
+ error("%s: fork Failed: %s\n", __func__, strerror(errno));
+ rc = -1;
+ goto exit1;
+ }
+
+ if (cpid == 0) {
+ rc = unshare(CLONE_NEWNS);
+ if (rc) {
+ error("%s: %s", __func__, strerror(errno));
+ goto child_exit;
+ }
+ if (sem_post(sem1) < 0) {
+ error("%s: sem_post failed: %s",
+ __func__, strerror(errno));
+ rc = -1;
+ goto child_exit;
+ }
+ if (sem_wait(sem2) < 0) {
+ error("%s: sem_wait failed %s",
+ __func__, strerror(errno));
+ rc = -1;
+ goto child_exit;
+ }
+
+ /*
+ * Now we have a persistent mount namespace.
+ * Mount private /tmp inside the namespace.
+ */
+ if (_mount_private_tmp(src_bind) == -1) {
+ rc = -1;
+ goto child_exit;
+ }
+ /*
+ * This umount is to remove the basepath mount from being
+ * visible inside the namespace. So if a user looks up the
+ * mounts inside the job, they will only see their job mount
+ * but not the basepath mount.
+ */
+ rc = umount2(ns_conf->basepath, MNT_DETACH);
+ if (rc) {
+ error("%s: umount2 failed: %s",
+ __func__, strerror(errno));
+ goto child_exit;
+ }
+ child_exit:
+ munmap(sem1, sizeof(*sem1));
+ sem_destroy(sem1);
+ munmap(sem2, sizeof(*sem2));
+ sem_destroy(sem2);
+
+ if (!rc) {
+ rc = _mount_private_shm();
+ if (rc)
+ error("%s: could not mount private shm",
+ __func__);
+ }
+ exit(rc);
+ } else {
+ struct stat sb;
+ int wstatus;
+ char proc_path[PATH_MAX];
+
+ if (sem_wait(sem1) < 0) {
+ error("%s: sem_Wait failed: %s",
+ __func__, strerror(errno));
+ rc = -1;
+ goto exit1;
+ }
+
+ if (snprintf(proc_path, PATH_MAX, "/proc/%u/ns/mnt", cpid)
+ >= PATH_MAX) {
+ error("%s: Unable to build job %u /proc path: %m",
+ __func__, job_id);
+ rc = -1;
+ goto exit1;
+ }
+
+ rc = stat(proc_path, &sb);
+ if (rc) {
+ error("%s: stat failed: %s", __func__, strerror(errno));
+ if (sem_post(sem2) < 0)
+ error("%s: Could not release semaphore: %s",
+ __func__, strerror(errno));
+ goto exit1;
+ }
+
+ /*
+ * Bind mount /proc/pid/ns/mnt to hold namespace active
+ * without a process attached to it
+ */
+ rc = mount(proc_path, ns_holder, NULL, MS_BIND, NULL);
+ if (rc) {
+ error("%s: ns base mount failed: %s",
+ __func__, strerror(errno));
+ if (sem_post(sem2) < 0)
+ error("%s: Could not release semaphore: %s",
+ __func__, strerror(errno));
+ goto exit1;
+ }
+ if (sem_post(sem2) < 0) {
+ error("%s: sem_post failed: %s",
+ __func__, strerror(errno));
+ goto exit1;
+ }
+
+ rc = waitpid(cpid, &wstatus, 0);
+ if (rc == -1) {
+ error("%s: waitpid failed", __func__);
+ goto exit1;
+ } else {
+ if (rc == cpid)
+ debug3("child exited: %d",
+ WEXITSTATUS(wstatus));
+ }
+
+ rc = 0;
+ }
+
+exit1:
+ munmap(sem1, sizeof(*sem1));
+ sem_destroy(sem1);
+ munmap(sem2, sizeof(*sem2));
+ sem_destroy(sem2);
+
+exit2:
+ if (rc) {
+ /* cleanup the job mount */
+ if (nftw(job_mount, _rm_data, 64, FTW_DEPTH|FTW_PHYS) < 0) {
+ error("%s: Directory traversal failed: %s: %s",
+ __func__, job_mount, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ }
+
+ return rc;
+}
+
+static int _get_fd(uint32_t job_id)
+{
+ char job_mount[PATH_MAX];
+ char ns_holder[PATH_MAX];
+ char active[PATH_MAX];
+ int fd;
+ int rc = 0;
+ struct stat st;
+
+ if (_create_paths(job_id, job_mount, ns_holder, NULL, active)
+ != SLURM_SUCCESS) {
+ return -1;
+ }
+
+ /* assert that namespace is active */
+ rc = stat(active, &st);
+ if (rc) {
+ /*
+ * If .active does not exist, then dont pass
+ * the fd of the namespace. It means perhaps
+ * namespace may not have been fully set up when
+ * the request for the fd came in.
+ */
+ debug("%s not found, namespace cannot be joined", active);
+ return -1;
+ }
+
+ fd = open(ns_holder, O_RDONLY);
+ if (fd == -1) {
+ error("%s: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ return fd;
+}
+
+/* Add a process to a job container, create the proctrack container to add */
+extern int container_p_join_external(uint32_t job_id)
+{
+ return _get_fd(job_id);
+}
+
+/* Add proctrack container (PAGG) to a job container */
+extern int container_p_add_cont(uint32_t job_id, uint64_t cont_id)
+{
+ return SLURM_SUCCESS;
+}
+
+/* Call getpid() inside it */
+/* Add a process to a job container, create the proctrack container to add */
+extern int container_p_join(uint32_t job_id, uid_t uid)
+{
+ char job_mount[PATH_MAX];
+ char ns_holder[PATH_MAX];
+ char src_bind[PATH_MAX];
+ char active[PATH_MAX];
+ int fd;
+ int rc = 0;
+
+#ifdef HAVE_NATIVE_CRAY
+ return SLURM_SUCCESS;
+#endif
+
+ /*
+ * Jobid 0 means we are not a real job, but a script running instead we
+ * do not need to handle this request.
+ */
+ if (job_id == 0)
+ return SLURM_SUCCESS;
+
+ if (_create_paths(job_id, job_mount, ns_holder, src_bind, active)
+ != SLURM_SUCCESS) {
+ return SLURM_ERROR;
+ }
+
+ rc = chown(src_bind, uid, -1);
+ if (rc) {
+ error("%s: chown failed for %s: %s",
+ __func__, src_bind, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ fd = open(ns_holder, O_RDONLY);
+ if (fd == -1) {
+ error("%s: open failed for %s: %s",
+ __func__, ns_holder, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ rc = setns(fd, CLONE_NEWNS);
+ if (rc) {
+ error("%s: setns failed for %s: %s",
+ __func__, ns_holder, strerror(errno));
+ return SLURM_ERROR;
+ } else {
+ struct stat st;
+ if (stat(active, &st)) {
+ /* touch .active to imply namespace is active */
+ int fp = 0;
+ fp = open(active, O_CREAT|O_RDWR, S_IRWXU);
+ if (fp == -1) {
+ error("%s: open failed %s: %s",
+ __func__, active, strerror(errno));
+ return SLURM_ERROR;
+ }
+ }
+ debug3("job entered namespace");
+ }
+
+ return SLURM_SUCCESS;
+}
+
+extern int container_p_delete(uint32_t job_id)
+{
+ char job_mount[PATH_MAX];
+ char ns_holder[PATH_MAX];
+ int rc = 0;
+ struct stat st;
+
+#ifdef HAVE_NATIVE_CRAY
+ return SLURM_SUCCESS;
+#endif
+
+ if (_create_paths(job_id, job_mount, ns_holder, NULL, NULL)
+ != SLURM_SUCCESS) {
+ return SLURM_ERROR;
+ }
+
+ if (stat(job_mount, &st)) {
+ error("%s: Job mount not found", __func__);
+ return SLURM_ERROR;
+ }
+
+ ns_conf = get_slurm_ns_conf();
+ if (!ns_conf) {
+ error("%s: Configuration not loaded", __func__);
+ return SLURM_ERROR;
+ }
+
+ errno = 0;
+ rc = umount2(ns_holder, MNT_DETACH);
+ if (rc) {
+ error("%s: umount2 %s failed: %s",
+ __func__, ns_holder, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ /*
+ * Traverses the job directory, and delete all files.
+ * Doesn't -
+ * traverse filesystem boundaries,
+ * follow symbolic links
+ * Does -
+ * a post order traversal and delete directory after processing
+ * contents
+ */
+ if (nftw(job_mount, _rm_data, 64, FTW_DEPTH|FTW_PHYS) < 0) {
+ error("%s: Directory traversal failed: %s: %s",
+ __func__, job_mount, strerror(errno));
+ return SLURM_ERROR;
+ }
+
+ return SLURM_SUCCESS;
+}
diff --git a/src/plugins/job_container/tmpfs/read_nsconf.c b/src/plugins/job_container/tmpfs/read_nsconf.c
new file mode 100644
index 00000000000..3bda6f6875a
--- /dev/null
+++ b/src/plugins/job_container/tmpfs/read_nsconf.c
@@ -0,0 +1,163 @@
+/*****************************************************************************\
+ * read_nsconf.c - parse namespace.conf configuration file.
+ *****************************************************************************
+ * Copyright (C) 2019-2021 Regents of the University of California
+ * Produced at Lawrence Berkeley National Laboratory
+ * Written by Aditi Gaur <agaur@lbl.gov>
+ * All rights reserved.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <https://slurm.schedmd.com/>.
+ * Please also read the included file: DISCLAIMER.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "slurm/slurm_errno.h"
+
+#include "src/common/xstring.h"
+#include "src/common/log.h"
+#include "src/common/parse_config.h"
+#include "src/common/read_config.h"
+#include "src/common/xmalloc.h"
+
+#include "read_nsconf.h"
+
+static slurm_ns_conf_t slurm_ns_conf;
+static bool slurm_ns_conf_inited = false;
+
+static int _read_slurm_ns_conf(void)
+{
+ char *conf_path = NULL;
+ s_p_hashtbl_t **node_tbl = NULL;
+ s_p_hashtbl_t *node = NULL;
+ s_p_hashtbl_t *tbl = NULL;
+ struct stat buf;
+ int node_count;
+ char *nodename = NULL;
+ char *basepath = NULL;
+ char *initscript = NULL;
+ int rc = SLURM_SUCCESS;
+ int i;
+ s_p_options_t node_options[] = {
+ {"NodeName", S_P_STRING},
+ {"BasePath", S_P_PLAIN_STRING},
+ {"InitScript", S_P_PLAIN_STRING},
+ {NULL}
+ };
+
+ s_p_options_t options[] = {
+ {"NodeName", S_P_EXPLINE, NULL, NULL, node_options},
+ {NULL}
+ };
+
+ xassert(conf->node_name);
+
+ conf_path = get_extra_conf_path("namespace.conf");
+
+ if ((!conf_path) || (stat(conf_path, &buf) == -1)) {
+ error("No namespace.conf file");
+ return ENOENT;
+ }
+ debug("Reading namespace.conf file %s", conf_path);
+ tbl = s_p_hashtbl_create(options);
+ if (s_p_parse_file(tbl, NULL, conf_path, false) == SLURM_ERROR) {
+ fatal("Could not open/read/parse namespace.conf file %s",
+ conf_path);
+ return SLURM_ERROR;
+ }
+
+ if (!s_p_get_expline(&node_tbl, &node_count, "NodeName", tbl)) {
+ error("Could not parse namespace.conf file %s", conf_path);
+ return SLURM_ERROR;
+ }
+ for (i = 0; i < node_count; i++) {
+ node = node_tbl[i];
+ if (!s_p_get_string(&nodename, "NodeName", node)) {
+ error("empty nodename detected, please verify namespace.conf is correct");
+ rc = SLURM_ERROR;
+ xfree(nodename);
+ continue;
+ }
+
+ if (xstrcmp(nodename, conf->node_name)) {
+ xfree(nodename);
+ continue;
+ }
+
+ if (!s_p_get_string(&basepath, "BasePath", node)) {
+ error("empty basepath detected, please verify namespace.conf is correct");
+ rc = SLURM_ERROR;
+ xfree(basepath);
+ break;
+ }
+ slurm_ns_conf.basepath = basepath;
+
+ if (!s_p_get_string(&initscript, "InitScript", node)) {
+ debug3("empty init script detected");
+ xfree(initscript);
+ slurm_ns_conf.initscript = NULL;
+ } else {
+ slurm_ns_conf.initscript = initscript;
+ }
+ xfree(nodename);
+ break;
+ }
+
+ if (!slurm_ns_conf.basepath) {
+ error("Configuration for this node not found in namespace.conf");
+ rc = SLURM_ERROR;
+ }
+ s_p_hashtbl_destroy(tbl);
+ xfree(conf_path);
+
+ return rc;
+}
+
+extern slurm_ns_conf_t *get_slurm_ns_conf(void)
+{
+ int rc;
+ if (!slurm_ns_conf_inited) {
+ memset(&slurm_ns_conf, 0, sizeof(slurm_ns_conf_t));
+ rc = _read_slurm_ns_conf();
+ if (rc == SLURM_ERROR)
+ return NULL;
+ slurm_ns_conf_inited = true;
+ }
+
+ return &slurm_ns_conf;
+}
+
+extern void free_ns_conf(void)
+{
+ if (slurm_ns_conf_inited) {
+ xfree(slurm_ns_conf.basepath);
+ xfree(slurm_ns_conf.initscript);
+ }
+ return;
+}
diff --git a/src/plugins/job_container/tmpfs/read_nsconf.h b/src/plugins/job_container/tmpfs/read_nsconf.h
new file mode 100644
index 00000000000..08a5a07e54d
--- /dev/null
+++ b/src/plugins/job_container/tmpfs/read_nsconf.h
@@ -0,0 +1,56 @@
+/*****************************************************************************\
+ * read_nsconf.h - parse namespace.conf configuration file.
+ *****************************************************************************
+ * Copyright (C) 2019-2021 Regents of the University of California
+ * Produced at Lawrence Berkeley National Laboratory
+ * Written by Aditi Gaur <agaur@lbl.gov>
+ * All rights reserved.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <https://slurm.schedmd.com/>.
+ * Please also read the included file: DISCLAIMER.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+#ifndef _READ_NSCONF_H
+#define _READ_NSCONF_H
+
+#include "src/slurmd/slurmd/slurmd.h"
+
+/*
+ * Slurm namespace job container plugin initialization
+ * parameters
+ */
+typedef struct slurm_ns_conf {
+ char *basepath;
+ char *initscript;
+} slurm_ns_conf_t;
+
+extern slurm_ns_conf_t *get_slurm_ns_conf(void);
+
+extern void free_ns_conf(void);
+
+#endif
diff --git a/src/slurmd/slurmstepd/mgr.c b/src/slurmd/slurmstepd/mgr.c
index 62070f83f82..e4235fadfa8 100644
--- a/src/slurmd/slurmstepd/mgr.c
+++ b/src/slurmd/slurmstepd/mgr.c
@@ -1418,14 +1418,52 @@ fail1:
static int _pre_task_child_privileged(
stepd_step_rec_t *job, int taskid, struct priv_state *sp)
{
+ int setwd = 0; /* set working dir */
+ int rc = 0;
+
if (_reclaim_privileges(sp) < 0)
return SLURM_ERROR;
+#ifndef HAVE_NATIVE_CRAY
+ /* Add job's pid to job container */
+
+ if (container_g_join(job->step_id.job_id, job->uid)) {
+ error("container_g_join failed: %u", job->step_id.job_id);
+ exit(1);
+ }
+
+ /*
+ * tmpfs job container plugin changes the working directory
+ * back to root working directory, so change it back to users
+ * but after dropping privillege
+ */
+ setwd = 1;
+#endif
+
if (spank_task_privileged(job, taskid) < 0)
return error("spank_task_init_privileged failed");
/* sp->gid_list should already be initialized */
- return (_drop_privileges(job, true, sp, false));
+ rc = _drop_privileges(job, true, sp, false);
+ if (rc) {
+ error ("_drop_privileges: %m");
+ return rc;
+ }
+
+ if (setwd) {
+ if (chdir(job->cwd) < 0) {
+ error("couldn't chdir to `%s': %m: going to /tmp instead",
+ job->cwd);
+ if (chdir("/tmp") < 0) {
+ error("couldn't chdir to /tmp either. dying.");
+ return SLURM_ERROR;
+ }
+ }
+
+ }
+
+ return rc;
+
}
struct exec_wait_info {
@@ -1769,6 +1807,7 @@ _fork_all_tasks(stepd_step_rec_t *job, bool *io_initialized)
if (_pre_task_child_privileged(job, i, &sprivs) < 0)
_exit(1);
+
if (_become_user(job, &sprivs) < 0) {
error("_become_user failed: %m");
/* child process, should not return */
--
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