95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <errno.h>

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <limits.h>

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <unistd.h>

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <fcntl.h>

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <sys/epoll.h>

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include <sys/stat.h>

b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering#include <sys/swap.h>

3ffd4af22052963e7a29431721ee204e634bea75Lennart Poettering#include <libudev.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering

8fcde01280adcbd07e8205b91ac52b06305b6208Lennart Poettering#include "unit.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "swap.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "load-fragment.h"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include "load-dropin.h"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen#include "unit-name.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "dbus-swap.h"

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering#include "special.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "bus-errors.h"

8fcde01280adcbd07e8205b91ac52b06305b6208Lennart Poettering#include "exit-status.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "def.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "path-util.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "virt.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_DEAD] = UNIT_INACTIVE,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_ACTIVATING] = UNIT_ACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_ACTIVE] = UNIT_ACTIVE,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_DEACTIVATING] = UNIT_DEACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_ACTIVATING_SIGTERM] = UNIT_DEACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_ACTIVATING_SIGKILL] = UNIT_DEACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_DEACTIVATING_SIGTERM] = UNIT_DEACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_DEACTIVATING_SIGKILL] = UNIT_DEACTIVATING,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen [SWAP_FAILED] = UNIT_FAILED

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen};

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

d5d8429a12c4b1ef0dcd226c0904f00f4fa4898aLennart Poetteringstatic void swap_unset_proc_swaps(Swap *s) {

d5d8429a12c4b1ef0dcd226c0904f00f4fa4898aLennart Poettering Swap *first;

d5d8429a12c4b1ef0dcd226c0904f00f4fa4898aLennart Poettering Hashmap *swaps;

d5d8429a12c4b1ef0dcd226c0904f00f4fa4898aLennart Poettering

d5d8429a12c4b1ef0dcd226c0904f00f4fa4898aLennart Poettering assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!s->parameters_proc_swaps.what)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* Remove this unit from the chain of swaps which share the

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swaps = UNIT(s)->manager->swaps_by_proc_swaps;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen first = hashmap_get(swaps, s->parameters_proc_swaps.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen LIST_REMOVE(Swap, same_proc_swaps, first, s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (first)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen hashmap_remove_and_replace(swaps,

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->parameters_proc_swaps.what,

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek first->parameters_proc_swaps.what,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen first);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen hashmap_remove(swaps, s->parameters_proc_swaps.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen free(s->parameters_proc_swaps.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->parameters_proc_swaps.what = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_init(Unit *u) {

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(UNIT(s)->load_state == UNIT_STUB);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->timeout_usec = DEFAULT_TIMEOUT_USEC;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek exec_context_init(&s->exec_context);

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->exec_context.std_output = u->manager->default_std_output;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->exec_context.std_error = u->manager->default_std_error;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek kill_context_init(&s->kill_context);

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek cgroup_context_init(&s->cgroup_context);

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->timer_watch.type = WATCH_INVALID;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek UNIT(s)->ignore_on_isolate = true;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek}

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmekstatic void swap_unwatch_control_pid(Swap *s) {

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek assert(s);

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek if (s->control_pid <= 0)

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek return;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek unit_unwatch_pid(UNIT(s), s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_pid = 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_done(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_unset_proc_swaps(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen free(s->what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen free(s->parameters_fragment.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->parameters_fragment.what = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen cgroup_context_done(&s->cgroup_context);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_unwatch_control_pid(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_unwatch_timer(u, &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenint swap_add_one_mount_link(Swap *s, Mount *m) {

b7e7184634d573fb73143210962acce205f37f61Michael Biebl int r;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl assert(s);

b7e7184634d573fb73143210962acce205f37f61Michael Biebl assert(m);

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl if (UNIT(s)->load_state != UNIT_LOADED ||

b7e7184634d573fb73143210962acce205f37f61Michael Biebl UNIT(m)->load_state != UNIT_LOADED)

b7e7184634d573fb73143210962acce205f37f61Michael Biebl return 0;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl if (is_device_path(s->what))

b7e7184634d573fb73143210962acce205f37f61Michael Biebl return 0;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl if (!path_startswith(s->what, m->where))

b7e7184634d573fb73143210962acce205f37f61Michael Biebl return 0;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true);

b7e7184634d573fb73143210962acce205f37f61Michael Biebl if (r < 0)

b7e7184634d573fb73143210962acce205f37f61Michael Biebl return r;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl

b7e7184634d573fb73143210962acce205f37f61Michael Biebl return 0;

b7e7184634d573fb73143210962acce205f37f61Michael Biebl}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_add_mount_links(Swap *s) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Unit *other;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek int r;

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_MOUNT])

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if ((r = swap_add_one_mount_link(s, MOUNT(other))) < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmek

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_add_device_links(Swap *s) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapParameters *p;

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt assert(s);

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt

4e5589836c9e143796c3f3d81e67ab7a9209e2b0Martin Pitt if (!s->what)

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt return 0;

9993ef2e9817b35b1d467707bef12b2a140b62dcLennart Poettering

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt if (s->from_fragment)

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt p = &s->parameters_fragment;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

4a62c710b62a5a3c7a8a278b810b9d5b5a0c8f4fMichal Schmidt return 0;

4a62c710b62a5a3c7a8a278b810b9d5b5a0c8f4fMichal Schmidt

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (is_device_path(s->what))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return unit_add_node_link(UNIT(s), s->what, !p->noauto &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->manager->running_as == SYSTEMD_SYSTEM);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

aad0a2c80097926757d4385e5f5492082d47f006Zbigniew Jędrzejewski-Szmek /* File based swap devices need to be ordered after

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_REMOUNT_FS_SERVICE, NULL, true);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_add_default_dependencies(Swap *s) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen assert(s);

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (detect_container(NULL) > 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_verify(Swap *s) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen bool b;

d171ed1c50ba64928b7fb30ee2ae729fdfe0826bThomas Hindoe Paaboel Andersen _cleanup_free_ char *e = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (UNIT(s)->load_state != UNIT_LOADED)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen e = unit_name_from_path(s->what, ".swap");

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (e == NULL)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return log_oom();

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen b = unit_has_name(UNIT(s), e);

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen if (!b) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_error_unit(UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s: Value of \"What\" and unit name do not match, not loading.",

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering UNIT(s)->id);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EINVAL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_error_unit(UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load.",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->id);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EINVAL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_load(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r;

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann Swap *s = SWAP(u);

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

264581a2f1599a27de577549dc75fccefef6a579Felipe Sateler assert(u->load_state == UNIT_STUB);

264581a2f1599a27de577549dc75fccefef6a579Felipe Sateler

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann /* Load a .swap file */

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_load_fragment_and_dropin_optional(u);

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann if (r < 0)

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann return r;

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (u->load_state == UNIT_LOADED) {

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann r = unit_add_exec_dependencies(u, &s->exec_context);

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann if (r < 0)

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann return r;

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (UNIT(s)->fragment_path)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->from_fragment = true;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!s->what) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->parameters_fragment.what)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what = strdup(s->parameters_fragment.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (s->parameters_proc_swaps.what)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what = strdup(s->parameters_proc_swaps.what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what = unit_name_to_path(u->id);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!s->what)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -ENOMEM;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen path_kill_slashes(s->what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!UNIT(s)->description)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if ((r = unit_set_description(u, s->what)) < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

4e4885553447f6f4c014bfa3e5b5837a76a0e612Lennart Poettering r = swap_add_device_links(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

4e4885553447f6f4c014bfa3e5b5837a76a0e612Lennart Poettering return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = swap_add_mount_links(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_add_default_slice(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (UNIT(s)->default_dependencies) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = swap_add_default_dependencies(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_exec_context_defaults(u, &s->exec_context);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return swap_verify(s);

29e0e6d8c1f7f648b7c998880d034eaa3e58c53aMartin Pitt}

4e4885553447f6f4c014bfa3e5b5837a76a0e612Lennart Poettering

40780877c19ef408da8ab21f4156cfc153f94b5cMartin Pittstatic int swap_add_one(

3315f085178f46155fda345d9526c09083b45946Lennart Poettering Manager *m,

4e4885553447f6f4c014bfa3e5b5837a76a0e612Lennart Poettering const char *what,

3315f085178f46155fda345d9526c09083b45946Lennart Poettering const char *what_proc_swaps,

3315f085178f46155fda345d9526c09083b45946Lennart Poettering int priority,

29e0e6d8c1f7f648b7c998880d034eaa3e58c53aMartin Pitt bool noauto,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen bool nofail,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen bool set_flags) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Unit *u = NULL;

7410616cd9dbbec97cf98d75324da5cda2b2f7a2Lennart Poettering _cleanup_free_ char *e = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen char *wp = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen bool delete = false;

7410616cd9dbbec97cf98d75324da5cda2b2f7a2Lennart Poettering int r;

7410616cd9dbbec97cf98d75324da5cda2b2f7a2Lennart Poettering SwapParameters *p;

7410616cd9dbbec97cf98d75324da5cda2b2f7a2Lennart Poettering Swap *first;

7410616cd9dbbec97cf98d75324da5cda2b2f7a2Lennart Poettering

3315f085178f46155fda345d9526c09083b45946Lennart Poettering assert(m);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(what);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(what_proc_swaps);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen e = unit_name_from_path(what, ".swap");

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!e)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return log_oom();

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen u = manager_get_unit(m, e);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (u &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SWAP(u)->from_proc_swaps &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen !path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EEXIST;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!u) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek delete = true;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek u = unit_new(m, sizeof(Swap));

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!u)

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek return log_oom();

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler r = unit_add_name(u, e);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (r < 0)

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek goto fail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

e987f2a809c6bab7e7bae4ca8f598ea5bafd5225Zbigniew Jędrzejewski-Szmek SWAP(u)->what = strdup(what);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!SWAP(u)->what) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek r = log_oom();

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek goto fail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek unit_add_to_load_queue(u);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek } else

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler delete = false;

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek p = &SWAP(u)->parameters_proc_swaps;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

e987f2a809c6bab7e7bae4ca8f598ea5bafd5225Zbigniew Jędrzejewski-Szmek if (!p->what) {

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering wp = strdup(what_proc_swaps);

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler if (!wp) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek r = log_oom();

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek goto fail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!m->swaps_by_proc_swaps) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek m->swaps_by_proc_swaps = hashmap_new(string_hash_func, string_compare_func);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!m->swaps_by_proc_swaps) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek r = log_oom();

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek goto fail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek free(p->what);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek p->what = wp;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek first = hashmap_get(m->swaps_by_proc_swaps, wp);

0b2ec8a3bfdd6118b3b4958d236ee203ad420f28David Herrmann LIST_PREPEND(Swap, same_proc_swaps, first, SWAP(u));

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler r = hashmap_replace(m->swaps_by_proc_swaps, wp, first);

2c09a745eba5f463e12b498a2f62a5036253c55cFelipe Sateler if (r < 0)

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek goto fail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (set_flags) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek SWAP(u)->is_active = true;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek }

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek SWAP(u)->from_proc_swaps = true;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek p->priority = priority;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek p->noauto = noauto;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek p->nofail = nofail;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek unit_add_to_dbus_queue(u);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek return 0;

e987f2a809c6bab7e7bae4ca8f598ea5bafd5225Zbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmekfail:

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek log_warning_unit(e, "Failed to load swap unit: %s", strerror(-r));

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering free(wp);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (delete && u)

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek unit_free(u);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek return r;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek}

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmekstatic int swap_process_new_swap(Manager *m, const char *device, int prio, bool set_flags) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek struct stat st;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek int r = 0, k;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek assert(m);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

e987f2a809c6bab7e7bae4ca8f598ea5bafd5225Zbigniew Jędrzejewski-Szmek if (stat(device, &st) >= 0 && S_ISBLK(st.st_mode)) {

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek struct udev_device *d;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek const char *dn;

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek struct udev_list_entry *item = NULL, *first = NULL;

e987f2a809c6bab7e7bae4ca8f598ea5bafd5225Zbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek /* So this is a proper swap device. Create swap units

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek d = udev_device_new_from_devnum(m->udev, 'b', st.st_rdev);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek if (!d)

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek return log_oom();

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen dn = udev_device_get_devnode(d);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* Skip dn==device, since that case will be handled below */

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (dn && !streq(dn, device))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = swap_add_one(m, dn, device, prio, false, false, set_flags);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* Add additional units for all symlinks */

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen first = udev_device_get_devlinks_list_entry(d);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen udev_list_entry_foreach(item, first) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen const char *p;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* Don't bother with the /dev/block links */

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen p = udev_list_entry_get_name(item);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (path_startswith(p, "/dev/block/"))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen continue;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (stat(p, &st) >= 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if ((!S_ISBLK(st.st_mode)) ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen st.st_rdev != udev_device_get_devnum(d))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen continue;

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt

77354c7e6f096a447245a8781c1eaa4acbe67089Martin Pitt k = swap_add_one(m, p, device, prio, false, false, set_flags);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (k < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = k;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen udev_device_unref(d);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering k = swap_add_one(m, device, device, prio, false, false, set_flags);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (k < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = k;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_set_state(Swap *s, SwapState state) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapState old_state;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen old_state = s->state;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state = state;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (state != SWAP_ACTIVATING &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_ACTIVATING_SIGTERM &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_ACTIVATING_SIGKILL &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_DEACTIVATING &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_DEACTIVATING_SIGTERM &&

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_DEACTIVATING_SIGKILL) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_unwatch_timer(UNIT(s), &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_unwatch_control_pid(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (state != old_state)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s changed %s -> %s",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_state_to_string(old_state),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_state_to_string(state));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_notify(UNIT(s), state_translation_table[old_state],

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state_translation_table[state], true);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_coldplug(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapState new_state = SWAP_DEAD;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s->state == SWAP_DEAD);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->deserialized_state != s->state)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state = s->deserialized_state;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (s->from_proc_swaps)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state = SWAP_ACTIVE;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (new_state != s->state) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (new_state == SWAP_ACTIVATING ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state == SWAP_ACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state == SWAP_ACTIVATING_SIGKILL ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state == SWAP_DEACTIVATING ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state == SWAP_DEACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen new_state == SWAP_DEACTIVATING_SIGKILL) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->control_pid <= 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EBADMSG;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_watch_pid(UNIT(s), s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering swap_set_state(s, new_state);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_dump(Unit *u, FILE *f, const char *prefix) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapParameters *p;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(f);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->from_proc_swaps)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen p = &s->parameters_proc_swaps;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (s->from_fragment)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen p = &s->parameters_fragment;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen p = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen fprintf(f,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sSwap State: %s\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sResult: %s\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sWhat: %s\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sFrom /proc/swaps: %s\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sFrom fragment: %s\n",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, swap_state_to_string(s->state),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, swap_result_to_string(s->result),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, s->what,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, yes_no(s->from_proc_swaps),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, yes_no(s->from_fragment));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (p)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen fprintf(f,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sPriority: %i\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sNoAuto: %s\n"

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sNoFail: %s\n",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, p->priority,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, yes_no(p->noauto),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, yes_no(p->nofail));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->control_pid > 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen fprintf(f,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%sControl PID: %lu\n",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen prefix, (unsigned long) s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek exec_context_dump(&s->exec_context, f, prefix);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek kill_context_dump(&s->kill_context, f, prefix);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen pid_t pid;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(c);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek assert(_pid);

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek

1e2fee5f757c0bb3a6fea216b1e10ee7b3c0e12eZbigniew Jędrzejewski-Szmek unit_realize_cgroup(UNIT(s));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = exec_spawn(c,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen &s->exec_context,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL, 0,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->manager->environment,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen true,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen true,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen true,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->manager->confirm_spawn,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->cgroup_mask,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->cgroup_path,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen &pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_watch_pid(UNIT(s), pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* FIXME: we need to do something here */

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen *_pid = pid;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenfail:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_unwatch_timer(UNIT(s), &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_enter_dead(Swap *s, SwapResult f) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f != SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = f;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen exec_context_tmp_dirs_done(&s->exec_context);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_enter_active(Swap *s, SwapResult f) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f != SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = f;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_set_state(s, SWAP_ACTIVE);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_enter_signal(Swap *s, SwapState state, SwapResult f) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f != SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = f;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_kill_context(

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s),

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen &s->kill_context,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state != SWAP_ACTIVATING_SIGTERM && state != SWAP_DEACTIVATING_SIGTERM,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen -1,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_pid,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen false);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r > 0) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_set_state(s, state);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_dead(s, SWAP_SUCCESS);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenfail:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_warning_unit(UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_dead(s, SWAP_FAILURE_RESOURCES);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic void swap_enter_activating(Swap *s) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen int r, priority;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command_id = SWAP_EXEC_ACTIVATE;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->from_fragment)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen priority = s->parameters_fragment.priority;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen priority = -1;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (priority >= 0) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen char p[LINE_MAX];

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen snprintf(p, sizeof(p), "%i", priority);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen char_array_0(p);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = exec_command_set(

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "/sbin/swapon",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "-p",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen p,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = exec_command_set(

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "/sbin/swapon",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->what,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_unwatch_control_pid(s);

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen r = swap_spawn(s, s->control_command, &s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_set_state(s, SWAP_ACTIVATING);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenfail:

56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt log_warning_unit(UNIT(s)->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s failed to run 'swapon' task: %s",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen UNIT(s)->id, strerror(-r));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_dead(s, SWAP_FAILURE_RESOURCES);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

8fba1c8d4e3d05d2af2848b6570bdc09e725d06eZbigniew Jędrzejewski-Szmekstatic void swap_enter_deactivating(Swap *s) {

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering int r;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

a986501b9059b72e8deced262554fbdd1ab9da17Lennart Poettering

a986501b9059b72e8deced262554fbdd1ab9da17Lennart Poettering s->control_command_id = SWAP_EXEC_DEACTIVATE;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE;

7b729f8686a83b24f3d9a891cde1c35a6aa37cf9Lukas Nykryn

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering r = exec_command_set(s->control_command,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "/sbin/swapoff",

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering s->what,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen NULL);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering swap_unwatch_control_pid(s);

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering r = swap_spawn(s, s->control_command, &s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (r < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen goto fail;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_set_state(s, SWAP_DEACTIVATING);

a986501b9059b72e8deced262554fbdd1ab9da17Lennart Poettering

a986501b9059b72e8deced262554fbdd1ab9da17Lennart Poettering return;

a986501b9059b72e8deced262554fbdd1ab9da17Lennart Poettering

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poetteringfail:

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering log_warning_unit(UNIT(s)->id,

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering "%s failed to run 'swapoff' task: %s",

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering UNIT(s)->id, strerror(-r));

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek swap_enter_active(s, SWAP_FAILURE_RESOURCES);

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pitt}

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pitt

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pittstatic int swap_start(Unit *u) {

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pitt Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen /* We cannot fulfill this request right now, try again later

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->state == SWAP_DEACTIVATING ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_DEACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_DEACTIVATING_SIGKILL ||

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering s->state == SWAP_ACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_ACTIVATING_SIGKILL)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EAGAIN;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

805e5dda0a01c99d231824e1a9c4a208418bf342Lennart Poettering if (s->state == SWAP_ACTIVATING)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s->state == SWAP_DEAD || s->state == SWAP_FAILED);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (detect_container(NULL) > 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EPERM;

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = SWAP_SUCCESS;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_activating(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

7a03974a6f4510dcb1850515a80c2063c767a80fThomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_stop(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek if (s->state == SWAP_DEACTIVATING ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_DEACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_DEACTIVATING_SIGKILL ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_ACTIVATING_SIGTERM ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_ACTIVATING_SIGKILL)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s->state == SWAP_ACTIVATING ||

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->state == SWAP_ACTIVE);

ed0d40229bc536c424fad481e56afcaa1d0e38dbLennart Poettering

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (detect_container(NULL) > 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return -EPERM;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_deactivating(s);

56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_serialize(Unit *u, FILE *f, FDSet *fds) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

7a03974a6f4510dcb1850515a80c2063c767a80fThomas Hindoe Paaboel Andersen assert(s);

7a03974a6f4510dcb1850515a80c2063c767a80fThomas Hindoe Paaboel Andersen assert(f);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(fds);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

a34bf9db5da0fdd6bdb14459e203dbe41ee99614Lennart Poettering unit_serialize_item(u, f, "state", swap_state_to_string(s->state));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_serialize_item(u, f, "result", swap_result_to_string(s->result));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->control_pid > 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->control_command_id >= 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen unit_serialize_item(u, f, "control-command", swap_exec_command_to_string(s->control_command_id));

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen exec_context_serialize(&s->exec_context, UNIT(s), f);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersenstatic int swap_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(fds);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (streq(key, "state")) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapState state;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen state = swap_state_from_string(value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (state < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(u->id, "Failed to parse state value %s", value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->deserialized_state = state;

8c84621c25c563c7428f3d355136fc542389aab8Thomas Hindoe Paaboel Andersen } else if (streq(key, "result")) {

8c84621c25c563c7428f3d355136fc542389aab8Thomas Hindoe Paaboel Andersen SwapResult f;

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pitt

f4f01ec146d91cb6943828851d98eee6a1ad4dd9Martin Pitt f = swap_result_from_string(value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(u->id, "Failed to parse result value %s", value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (f != SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = f;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else if (streq(key, "control-pid")) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen pid_t pid;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (parse_pid(value, &pid) < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(u->id, "Failed to parse control-pid value %s", value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt s->control_pid = pid;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else if (streq(key, "control-command")) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapExecCommand id;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen id = swap_exec_command_from_string(value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (id < 0)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(u->id, "Failed to parse exec-command value %s", value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command_id = id;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = s->exec_command + id;

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else if (streq(key, "tmp-dir")) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen char *t;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen t = strdup(value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!t)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return log_oom();

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->exec_context.tmp_dir = t;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen } else if (streq(key, "var-tmp-dir")) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen char *t;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen t = strdup(value);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (!t)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return log_oom();

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->exec_context.var_tmp_dir = t;

260ad50f5b4a9795032e3119c64f838a2d03370dThomas Hindoe Paaboel Andersen } else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_debug_unit(u->id, "Unknown serialization key '%s'", key);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen_pure_ static UnitActiveState swap_active_state(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return state_translation_table[SWAP(u)->state];

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen_pure_ static const char *swap_sub_state_to_string(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return swap_state_to_string(SWAP(u)->state);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen_pure_ static bool swap_check_gc(Unit *u) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return s->from_proc_swaps;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen}

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

f8bc41822ba19905707a97f9d87262f2c2b6e5faZbigniew Jędrzejewski-Szmekstatic void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {

5921fc3cc36df4baa5e16060e7675ace9eda2befThomas Hindoe Paaboel Andersen Swap *s = SWAP(u);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen SwapResult f;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(s);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert(pid >= 0);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (pid != s->control_pid)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen return;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_pid = 0;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (is_clean_exit(code, status, NULL))

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen f = SWAP_SUCCESS;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (code == CLD_EXITED)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen f = SWAP_FAILURE_EXIT_CODE;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (code == CLD_KILLED)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen f = SWAP_FAILURE_SIGNAL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else if (code == CLD_DUMPED)

b2c23da8cea1987a1a329f5a964d3299b7ca7890Lennart Poettering f = SWAP_FAILURE_CORE_DUMP;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen assert_not_reached("Unknown code");

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f != SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->result = f;

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (s->control_command) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command = NULL;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek }

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen log_full_unit(f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen u->id,

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen "%s swap process exited, code=%s status=%i",

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen u->id, sigchld_code_to_string(code), status);

a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0eZbigniew Jędrzejewski-Szmek

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen switch (s->state) {

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_ACTIVATING:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_ACTIVATING_SIGTERM:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_ACTIVATING_SIGKILL:

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering if (f == SWAP_SUCCESS)

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering swap_enter_active(s, f);

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering else

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering swap_enter_dead(s, f);

b3fae863ef548add2d01c3956ce7720f4eeeca7eLennart Poettering break;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_DEACTIVATING:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_DEACTIVATING_SIGKILL:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen case SWAP_DEACTIVATING_SIGTERM:

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen if (f == SWAP_SUCCESS)

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_dead(s, f);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen else

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen swap_enter_dead(s, f);

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen break;

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen

95ed3294c632f5606327149f10cef1eb34422862Thomas Hindoe Paaboel Andersen default:

assert_not_reached("Uh, control process died at wrong time.");

}

/* Notify clients about changed exit status */

unit_add_to_dbus_queue(u);

/* Request a reload of /proc/swaps, so that following units

u->manager->request_reload = true;

}

static void swap_timer_event(Unit *u, uint64_t elapsed, Watch *w) {

Swap *s = SWAP(u);

assert(s);

assert(elapsed == 1);

assert(w == &s->timer_watch);

switch (s->state) {

case SWAP_ACTIVATING:

log_warning_unit(u->id, "%s activation timed out. Stopping.", u->id);

swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);

break;

case SWAP_DEACTIVATING:

log_warning_unit(u->id, "%s deactivation timed out. Stopping.", u->id);

swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);

break;

case SWAP_ACTIVATING_SIGTERM:

if (s->kill_context.send_sigkill) {

log_warning_unit(u->id, "%s activation timed out. Killing.", u->id);

swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);

} else {

log_warning_unit(u->id, "%s activation timed out. Skipping SIGKILL. Ignoring.", u->id);

swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);

}

break;

case SWAP_DEACTIVATING_SIGTERM:

if (s->kill_context.send_sigkill) {

log_warning_unit(u->id, "%s deactivation timed out. Killing.", u->id);

swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);

} else {

log_warning_unit(u->id, "%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->id);

swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);

}

break;

case SWAP_ACTIVATING_SIGKILL:

case SWAP_DEACTIVATING_SIGKILL:

log_warning_unit(u->id, "%s swap process still around after SIGKILL. Ignoring.", u->id);

swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);

break;

default:

assert_not_reached("Timeout at wrong time.");

}

}

static int swap_load_proc_swaps(Manager *m, bool set_flags) {

unsigned i;

int r = 0;

assert(m);

rewind(m->proc_swaps);

(void) fscanf(m->proc_swaps, "%*s %*s %*s %*s %*s\n");

for (i = 1;; i++) {

char *dev = NULL, *d;

int prio = 0, k;

k = fscanf(m->proc_swaps,

"%ms " /* device/file */

"%*s " /* type of swap */

"%*s " /* swap size */

"%*s " /* used */

"%i\n", /* priority */

&dev, &prio);

if (k != 2) {

if (k == EOF)

break;

log_warning("Failed to parse /proc/swaps:%u", i);

free(dev);

continue;

}

d = cunescape(dev);

free(dev);

if (!d)

return -ENOMEM;

k = swap_process_new_swap(m, d, prio, set_flags);

free(d);

if (k < 0)

r = k;

}

return r;

}

int swap_dispatch_reload(Manager *m) {

/* This function should go as soon as the kernel properly notifies us */

if (_likely_(!m->request_reload))

return 0;

m->request_reload = false;

return swap_fd_event(m, EPOLLPRI);

}

int swap_fd_event(Manager *m, int events) {

Unit *u;

int r;

assert(m);

assert(events & EPOLLPRI);

r = swap_load_proc_swaps(m, true);

if (r < 0) {

log_error("Failed to reread /proc/swaps: %s", strerror(-r));

/* Reset flags, just in case, for late calls */

LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) {

Swap *swap = SWAP(u);

swap->is_active = swap->just_activated = false;

}

return 0;

}

manager_dispatch_load_queue(m);

LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) {

Swap *swap = SWAP(u);

if (!swap->is_active) {

/* This has just been deactivated */

swap->from_proc_swaps = false;

swap_unset_proc_swaps(swap);

switch (swap->state) {

case SWAP_ACTIVE:

swap_enter_dead(swap, SWAP_SUCCESS);

break;

default:

swap_set_state(swap, swap->state);

break;

}

} else if (swap->just_activated) {

/* New swap entry */

switch (swap->state) {

case SWAP_DEAD:

case SWAP_FAILED:

swap_enter_active(swap, SWAP_SUCCESS);

break;

default:

/* Nothing really changed, but let's

swap_set_state(swap, swap->state);

break;

}

}

/* Reset the flags for later calls */

swap->is_active = swap->just_activated = false;

}

return 1;

}

static Unit *swap_following(Unit *u) {

Swap *s = SWAP(u);

Swap *other, *first = NULL;

assert(s);

if (streq_ptr(s->what, s->parameters_proc_swaps.what))

return NULL;

/* Make everybody follow the unit that's named after the swap

LIST_FOREACH_AFTER(same_proc_swaps, other, s)

if (streq_ptr(other->what, other->parameters_proc_swaps.what))

return UNIT(other);

LIST_FOREACH_BEFORE(same_proc_swaps, other, s) {

if (streq_ptr(other->what, other->parameters_proc_swaps.what))

return UNIT(other);

first = other;

}

return UNIT(first);

}

static int swap_following_set(Unit *u, Set **_set) {

Swap *s = SWAP(u);

Swap *other;

Set *set;

int r;

assert(s);

assert(_set);

if (LIST_JUST_US(same_proc_swaps, s)) {

*_set = NULL;

return 0;

}

if (!(set = set_new(NULL, NULL)))

return -ENOMEM;

LIST_FOREACH_AFTER(same_proc_swaps, other, s)

if ((r = set_put(set, other)) < 0)

goto fail;

LIST_FOREACH_BEFORE(same_proc_swaps, other, s)

if ((r = set_put(set, other)) < 0)

goto fail;

*_set = set;

return 1;

fail:

set_free(set);

return r;

}

static void swap_shutdown(Manager *m) {

assert(m);

if (m->proc_swaps) {

fclose(m->proc_swaps);

m->proc_swaps = NULL;

}

hashmap_free(m->swaps_by_proc_swaps);

m->swaps_by_proc_swaps = NULL;

}

static int swap_enumerate(Manager *m) {

int r;

assert(m);

if (!m->proc_swaps) {

struct epoll_event ev = {

.events = EPOLLPRI,

.data.ptr = &m->swap_watch,

};

m->proc_swaps = fopen("/proc/swaps", "re");

if (!m->proc_swaps)

return (errno == ENOENT) ? 0 : -errno;

m->swap_watch.type = WATCH_SWAP;

m->swap_watch.fd = fileno(m->proc_swaps);

if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->swap_watch.fd, &ev) < 0)

return -errno;

}

r = swap_load_proc_swaps(m, false);

if (r < 0)

swap_shutdown(m);

return r;

}

static void swap_reset_failed(Unit *u) {

Swap *s = SWAP(u);

assert(s);

if (s->state == SWAP_FAILED)

swap_set_state(s, SWAP_DEAD);

s->result = SWAP_SUCCESS;

}

static int swap_kill(Unit *u, KillWho who, int signo, DBusError *error) {

return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error);

}

static const char* const swap_state_table[_SWAP_STATE_MAX] = {

[SWAP_DEAD] = "dead",

[SWAP_ACTIVATING] = "activating",

[SWAP_ACTIVE] = "active",

[SWAP_DEACTIVATING] = "deactivating",

[SWAP_ACTIVATING_SIGTERM] = "activating-sigterm",

[SWAP_ACTIVATING_SIGKILL] = "activating-sigkill",

[SWAP_DEACTIVATING_SIGTERM] = "deactivating-sigterm",

[SWAP_DEACTIVATING_SIGKILL] = "deactivating-sigkill",

[SWAP_FAILED] = "failed"

};

DEFINE_STRING_TABLE_LOOKUP(swap_state, SwapState);

static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = {

[SWAP_EXEC_ACTIVATE] = "ExecActivate",

[SWAP_EXEC_DEACTIVATE] = "ExecDeactivate",

};

DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand);

static const char* const swap_result_table[_SWAP_RESULT_MAX] = {

[SWAP_SUCCESS] = "success",

[SWAP_FAILURE_RESOURCES] = "resources",

[SWAP_FAILURE_TIMEOUT] = "timeout",

[SWAP_FAILURE_EXIT_CODE] = "exit-code",

[SWAP_FAILURE_SIGNAL] = "signal",

[SWAP_FAILURE_CORE_DUMP] = "core-dump"

};

DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult);

const UnitVTable swap_vtable = {

.object_size = sizeof(Swap),

.sections =

"Unit\0"

"Swap\0"

"Install\0",

.private_section = "Swap",

.exec_context_offset = offsetof(Swap, exec_context),

.cgroup_context_offset = offsetof(Swap, cgroup_context),

.no_alias = true,

.no_instances = true,

.init = swap_init,

.load = swap_load,

.done = swap_done,

.coldplug = swap_coldplug,

.dump = swap_dump,

.start = swap_start,

.stop = swap_stop,

.kill = swap_kill,

.serialize = swap_serialize,

.deserialize_item = swap_deserialize_item,

.active_state = swap_active_state,

.sub_state_to_string = swap_sub_state_to_string,

.check_gc = swap_check_gc,

.sigchld_event = swap_sigchld_event,

.timer_event = swap_timer_event,

.reset_failed = swap_reset_failed,

.bus_interface = "org.freedesktop.systemd1.Swap",

.bus_message_handler = bus_swap_message_handler,

.bus_invalidating_properties = bus_swap_invalidating_properties,

.bus_set_property = bus_swap_set_property,

.bus_commit_properties = bus_swap_commit_properties,

.following = swap_following,

.following_set = swap_following_set,

.enumerate = swap_enumerate,

.shutdown = swap_shutdown,

.status_message_formats = {

.starting_stopping = {

[0] = "Activating swap %s...",

[1] = "Deactivating swap %s...",

},

.finished_start_job = {

[JOB_DONE] = "Activated swap %s.",

[JOB_FAILED] = "Failed to activate swap %s.",

[JOB_DEPENDENCY] = "Dependency failed for %s.",

[JOB_TIMEOUT] = "Timed out activating swap %s.",

},

.finished_stop_job = {

[JOB_DONE] = "Deactivated swap %s.",

[JOB_FAILED] = "Failed deactivating swap %s.",

[JOB_TIMEOUT] = "Timed out deactivating swap %s.",

},

},

};