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Merge pull request #12619 from zachsmith/refactor-parse-sleep-config
systemd-sleep: refactor sleep conf parsing
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
GitHub
commit
8f5d6a044b
2
TODO
2
TODO
@ -34,8 +34,6 @@ Features:
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cgroup.
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* clean up sleep.c:
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- Parse sleep.conf only once, and parse its whole contents so that we don't
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have to parse it again and again in s2h
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- Make sure resume= and resume_offset= on the kernel cmdline always take
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precedence
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@ -32,16 +32,14 @@
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#include "strv.h"
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#include "time-util.h"
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int parse_sleep_config(const char *verb, bool *ret_allow, char ***ret_modes, char ***ret_states, usec_t *ret_delay) {
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int parse_sleep_config(SleepConfig **ret_sleep_config) {
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_cleanup_(free_sleep_configp) SleepConfig *sc;
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int allow_suspend = -1, allow_hibernate = -1,
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allow_s2h = -1, allow_hybrid_sleep = -1;
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bool allow;
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_cleanup_strv_free_ char
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**suspend_mode = NULL, **suspend_state = NULL,
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**hibernate_mode = NULL, **hibernate_state = NULL,
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**hybrid_mode = NULL, **hybrid_state = NULL;
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_cleanup_strv_free_ char **modes, **states; /* always initialized below */
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usec_t delay = 180 * USEC_PER_MINUTE;
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sc = new0(SleepConfig, 1);
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if (!sc)
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return log_oom();
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const ConfigTableItem items[] = {
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{ "Sleep", "AllowSuspend", config_parse_tristate, 0, &allow_suspend },
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@ -49,14 +47,14 @@ int parse_sleep_config(const char *verb, bool *ret_allow, char ***ret_modes, cha
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{ "Sleep", "AllowSuspendThenHibernate", config_parse_tristate, 0, &allow_s2h },
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{ "Sleep", "AllowHybridSleep", config_parse_tristate, 0, &allow_hybrid_sleep },
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{ "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_mode },
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{ "Sleep", "SuspendState", config_parse_strv, 0, &suspend_state },
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{ "Sleep", "HibernateMode", config_parse_strv, 0, &hibernate_mode },
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{ "Sleep", "HibernateState", config_parse_strv, 0, &hibernate_state },
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{ "Sleep", "HybridSleepMode", config_parse_strv, 0, &hybrid_mode },
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{ "Sleep", "HybridSleepState", config_parse_strv, 0, &hybrid_state },
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{ "Sleep", "SuspendMode", config_parse_strv, 0, &sc->suspend_modes },
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{ "Sleep", "SuspendState", config_parse_strv, 0, &sc->suspend_states },
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{ "Sleep", "HibernateMode", config_parse_strv, 0, &sc->hibernate_modes },
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{ "Sleep", "HibernateState", config_parse_strv, 0, &sc->hibernate_states },
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{ "Sleep", "HybridSleepMode", config_parse_strv, 0, &sc->hybrid_modes },
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{ "Sleep", "HybridSleepState", config_parse_strv, 0, &sc->hybrid_states },
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{ "Sleep", "HibernateDelaySec", config_parse_sec, 0, &delay},
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{ "Sleep", "HibernateDelaySec", config_parse_sec, 0, &sc->hibernate_delay_sec},
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{}
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};
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@ -65,64 +63,33 @@ int parse_sleep_config(const char *verb, bool *ret_allow, char ***ret_modes, cha
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"Sleep\0", config_item_table_lookup, items,
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CONFIG_PARSE_WARN, NULL);
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if (streq(verb, "suspend")) {
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allow = allow_suspend != 0;
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/* use default values unless set */
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sc->allow_suspend = allow_suspend != 0;
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sc->allow_hibernate = allow_hibernate != 0;
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sc->allow_hybrid_sleep = allow_hybrid_sleep >= 0 ? allow_hybrid_sleep
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: (allow_suspend != 0 && allow_hibernate != 0);
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sc->allow_s2h = allow_s2h >= 0 ? allow_s2h
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: (allow_suspend != 0 && allow_hibernate != 0);
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/* empty by default */
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modes = TAKE_PTR(suspend_mode);
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if (!sc->suspend_states)
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sc->suspend_states = strv_new("mem", "standby", "freeze");
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if (!sc->hibernate_modes)
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sc->hibernate_modes = strv_new("platform", "shutdown");
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if (!sc->hibernate_states)
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sc->hibernate_states = strv_new("disk");
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if (!sc->hybrid_modes)
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sc->hybrid_modes = strv_new("suspend", "platform", "shutdown");
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if (!sc->hybrid_states)
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sc->hybrid_states = strv_new("disk");
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if (sc->hibernate_delay_sec == 0)
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sc->hibernate_delay_sec = 180 * USEC_PER_MINUTE;
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if (suspend_state)
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states = TAKE_PTR(suspend_state);
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else
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states = strv_new("mem", "standby", "freeze");
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} else if (streq(verb, "hibernate")) {
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allow = allow_hibernate != 0;
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if (hibernate_mode)
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modes = TAKE_PTR(hibernate_mode);
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else
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modes = strv_new("platform", "shutdown");
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if (hibernate_state)
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states = TAKE_PTR(hibernate_state);
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else
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states = strv_new("disk");
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} else if (streq(verb, "hybrid-sleep")) {
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allow = allow_hybrid_sleep > 0 ||
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(allow_suspend != 0 && allow_hibernate != 0);
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if (hybrid_mode)
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modes = TAKE_PTR(hybrid_mode);
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else
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modes = strv_new("suspend", "platform", "shutdown");
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if (hybrid_state)
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states = TAKE_PTR(hybrid_state);
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else
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states = strv_new("disk");
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} else if (streq(verb, "suspend-then-hibernate")) {
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allow = allow_s2h > 0 ||
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(allow_suspend != 0 && allow_hibernate != 0);
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modes = states = NULL;
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} else
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assert_not_reached("what verb");
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if ((!modes && STR_IN_SET(verb, "hibernate", "hybrid-sleep")) ||
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(!states && !streq(verb, "suspend-then-hibernate")))
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/* ensure values set for all required fields */
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if (!sc->suspend_states || !sc->hibernate_modes
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|| !sc->hibernate_states || !sc->hybrid_modes || !sc->hybrid_states)
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return log_oom();
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if (ret_allow)
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*ret_allow = allow;
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if (ret_modes)
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*ret_modes = TAKE_PTR(modes);
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if (ret_states)
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*ret_states = TAKE_PTR(states);
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if (ret_delay)
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*ret_delay = delay;
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*ret_sleep_config = TAKE_PTR(sc);
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return 0;
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}
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@ -378,9 +345,9 @@ int read_fiemap(int fd, struct fiemap **ret) {
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return 0;
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}
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static int can_sleep_internal(const char *verb, bool check_allowed);
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static int can_sleep_internal(const char *verb, bool check_allowed, const SleepConfig *sleep_config);
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static bool can_s2h(void) {
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static bool can_s2h(const SleepConfig *sleep_config) {
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const char *p;
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int r;
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@ -391,7 +358,7 @@ static bool can_s2h(void) {
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}
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FOREACH_STRING(p, "suspend", "hibernate") {
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r = can_sleep_internal(p, false);
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r = can_sleep_internal(p, false, sleep_config);
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if (IN_SET(r, 0, -ENOSPC, -EADV)) {
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log_debug("Unable to %s system.", p);
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return false;
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@ -403,14 +370,14 @@ static bool can_s2h(void) {
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return true;
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}
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static int can_sleep_internal(const char *verb, bool check_allowed) {
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static int can_sleep_internal(const char *verb, bool check_allowed, const SleepConfig *sleep_config) {
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bool allow;
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_cleanup_strv_free_ char **modes = NULL, **states = NULL;
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char **modes = NULL, **states = NULL;
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int r;
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assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate"));
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r = parse_sleep_config(verb, &allow, &modes, &states, NULL);
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r = sleep_settings(verb, sleep_config, &allow, &modes, &states);
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if (r < 0)
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return false;
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@ -420,7 +387,7 @@ static int can_sleep_internal(const char *verb, bool check_allowed) {
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}
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if (streq(verb, "suspend-then-hibernate"))
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return can_s2h();
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return can_s2h(sleep_config);
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if (!can_sleep_state(states) || !can_sleep_disk(modes))
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return false;
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@ -435,5 +402,58 @@ static int can_sleep_internal(const char *verb, bool check_allowed) {
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}
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int can_sleep(const char *verb) {
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return can_sleep_internal(verb, true);
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_cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL;
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int r;
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r = parse_sleep_config(&sleep_config);
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if (r < 0)
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return r;
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return can_sleep_internal(verb, true, sleep_config);
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}
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int sleep_settings(const char *verb, const SleepConfig *sleep_config, bool *ret_allow, char ***ret_modes, char ***ret_states) {
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assert(verb);
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assert(sleep_config);
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assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate"));
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if (streq(verb, "suspend")) {
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*ret_allow = sleep_config->allow_suspend;
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*ret_modes = sleep_config->suspend_modes;
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*ret_states = sleep_config->suspend_states;
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} else if (streq(verb, "hibernate")) {
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*ret_allow = sleep_config->allow_hibernate;
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*ret_modes = sleep_config->hibernate_modes;
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*ret_states = sleep_config->hibernate_states;
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} else if (streq(verb, "hybrid-sleep")) {
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*ret_allow = sleep_config->allow_hybrid_sleep;
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*ret_modes = sleep_config->hybrid_modes;
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*ret_states = sleep_config->hybrid_states;
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} else if (streq(verb, "suspend-then-hibernate")) {
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*ret_allow = sleep_config->allow_s2h;
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*ret_modes = *ret_states = NULL;
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}
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/* suspend modes empty by default */
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if ((!ret_modes && !streq(verb, "suspend")) || !ret_states)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No modes or states set for %s; Check sleep.conf", verb);
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return 0;
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}
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void free_sleep_config(SleepConfig *sc) {
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if (!sc)
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return;
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strv_free(sc->suspend_modes);
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strv_free(sc->suspend_states);
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strv_free(sc->hibernate_modes);
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strv_free(sc->hibernate_states);
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strv_free(sc->hybrid_modes);
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strv_free(sc->hybrid_states);
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free(sc);
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}
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@ -4,8 +4,29 @@
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#include <linux/fiemap.h>
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#include "time-util.h"
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typedef struct SleepConfig {
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bool allow_suspend; /* AllowSuspend */
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bool allow_hibernate; /* AllowHibernation */
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bool allow_s2h; /* AllowSuspendThenHibernate */
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bool allow_hybrid_sleep; /* AllowHybridSleep */
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char **suspend_modes; /* SuspendMode */
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char **suspend_states; /* SuspendState */
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char **hibernate_modes; /* HibernateMode */
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char **hibernate_states; /* HibernateState */
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char **hybrid_modes; /* HybridSleepMode */
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char **hybrid_states; /* HybridSleepState */
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usec_t hibernate_delay_sec; /* HibernateDelaySec */
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} SleepConfig;
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void free_sleep_config(SleepConfig *sc);
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DEFINE_TRIVIAL_CLEANUP_FUNC(SleepConfig*, free_sleep_config);
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int sleep_settings(const char *verb, const SleepConfig *sleep_config, bool *ret_allow, char ***ret_modes, char ***ret_states);
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int read_fiemap(int fd, struct fiemap **ret);
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int parse_sleep_config(const char *verb, bool *ret_allow, char ***ret_modes, char ***ret_states, usec_t *ret_delay);
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int parse_sleep_config(SleepConfig **sleep_config);
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int find_hibernate_location(char **device, char **type, size_t *size, size_t *used);
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int can_sleep(const char *verb);
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@ -199,37 +199,29 @@ static int execute(char **modes, char **states) {
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return r;
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}
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static int execute_s2h(usec_t hibernate_delay_sec) {
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_cleanup_strv_free_ char **hibernate_modes = NULL, **hibernate_states = NULL,
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**suspend_modes = NULL, **suspend_states = NULL;
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static int execute_s2h(const SleepConfig *sleep_config) {
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_cleanup_close_ int tfd = -1;
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char buf[FORMAT_TIMESPAN_MAX];
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struct itimerspec ts = {};
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struct pollfd fds;
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int r;
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r = parse_sleep_config("suspend", NULL, &suspend_modes, &suspend_states, NULL);
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if (r < 0)
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return r;
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r = parse_sleep_config("hibernate", NULL, &hibernate_modes, &hibernate_states, NULL);
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if (r < 0)
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return r;
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assert(sleep_config);
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tfd = timerfd_create(CLOCK_BOOTTIME_ALARM, TFD_NONBLOCK|TFD_CLOEXEC);
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if (tfd < 0)
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return log_error_errno(errno, "Error creating timerfd: %m");
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log_debug("Set timerfd wake alarm for %s",
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format_timespan(buf, sizeof(buf), hibernate_delay_sec, USEC_PER_SEC));
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format_timespan(buf, sizeof(buf), sleep_config->hibernate_delay_sec, USEC_PER_SEC));
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timespec_store(&ts.it_value, hibernate_delay_sec);
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timespec_store(&ts.it_value, sleep_config->hibernate_delay_sec);
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r = timerfd_settime(tfd, 0, &ts, NULL);
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if (r < 0)
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return log_error_errno(errno, "Error setting hibernate timer: %m");
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r = execute(suspend_modes, suspend_states);
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r = execute(sleep_config->suspend_modes, sleep_config->suspend_states);
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if (r < 0)
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return r;
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@ -248,11 +240,12 @@ static int execute_s2h(usec_t hibernate_delay_sec) {
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/* If woken up after alarm time, hibernate */
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log_debug("Attempting to hibernate after waking from %s timer",
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format_timespan(buf, sizeof(buf), hibernate_delay_sec, USEC_PER_SEC));
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r = execute(hibernate_modes, hibernate_states);
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format_timespan(buf, sizeof(buf), sleep_config->hibernate_delay_sec, USEC_PER_SEC));
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r = execute(sleep_config->hibernate_modes, sleep_config->hibernate_states);
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if (r < 0) {
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log_notice("Couldn't hibernate, will try to suspend again.");
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r = execute(suspend_modes, suspend_states);
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r = execute(sleep_config->suspend_modes, sleep_config->suspend_states);
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if (r < 0) {
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log_notice("Could neither hibernate nor suspend again, giving up.");
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return r;
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@ -335,8 +328,8 @@ static int parse_argv(int argc, char *argv[]) {
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static int run(int argc, char *argv[]) {
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bool allow;
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_cleanup_strv_free_ char **modes = NULL, **states = NULL;
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usec_t delay = 0;
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char **modes = NULL, **states = NULL;
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_cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL;
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int r;
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log_setup_service();
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@ -345,7 +338,11 @@ static int run(int argc, char *argv[]) {
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if (r <= 0)
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return r;
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r = parse_sleep_config(arg_verb, &allow, &modes, &states, &delay);
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r = parse_sleep_config(&sleep_config);
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if (r < 0)
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return r;
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r = sleep_settings(arg_verb, sleep_config, &allow, &modes, &states);
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if (r < 0)
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return r;
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@ -355,7 +352,7 @@ static int run(int argc, char *argv[]) {
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arg_verb);
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if (streq(arg_verb, "suspend-then-hibernate"))
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return execute_s2h(delay);
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return execute_s2h(sleep_config);
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else
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return execute(modes, states);
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}
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@ -16,12 +16,10 @@
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#include "util.h"
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static void test_parse_sleep_config(void) {
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const char *verb;
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_cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL;
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log_info("/* %s */", __func__);
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FOREACH_STRING(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate")
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assert_se(parse_sleep_config(verb, NULL, NULL, NULL, NULL) == 0);
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assert(parse_sleep_config(&sleep_config) == 0);
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}
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static int test_fiemap(const char *path) {
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