diff options
Diffstat (limited to 'src/shared/sleep-config.c')
-rw-r--r-- | src/shared/sleep-config.c | 137 |
1 files changed, 93 insertions, 44 deletions
diff --git a/src/shared/sleep-config.c b/src/shared/sleep-config.c index 9e4ce183d3..2e22bd0bbe 100644 --- a/src/shared/sleep-config.c +++ b/src/shared/sleep-config.c @@ -9,6 +9,7 @@ #include <stddef.h> #include <stdio.h> #include <string.h> +#include <sys/ioctl.h> #include <syslog.h> #include <unistd.h> @@ -21,12 +22,15 @@ #include "log.h" #include "macro.h" #include "parse-util.h" +#include "path-util.h" #include "sleep-config.h" #include "string-util.h" #include "strv.h" -int parse_sleep_config(const char *verb, char ***_modes, char ***_states, usec_t *_delay) { - +int parse_sleep_config(const char *verb, bool *ret_allow, char ***ret_modes, char ***ret_states, usec_t *ret_delay) { + int allow_suspend = -1, allow_hibernate = -1, + allow_s2h = -1, allow_hybrid_sleep = -1; + bool allow; _cleanup_strv_free_ char **suspend_mode = NULL, **suspend_state = NULL, **hibernate_mode = NULL, **hibernate_state = NULL, @@ -35,13 +39,19 @@ int parse_sleep_config(const char *verb, char ***_modes, char ***_states, usec_t usec_t delay = 180 * USEC_PER_MINUTE; const ConfigTableItem items[] = { - { "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_mode }, - { "Sleep", "SuspendState", config_parse_strv, 0, &suspend_state }, - { "Sleep", "HibernateMode", config_parse_strv, 0, &hibernate_mode }, - { "Sleep", "HibernateState", config_parse_strv, 0, &hibernate_state }, - { "Sleep", "HybridSleepMode", config_parse_strv, 0, &hybrid_mode }, - { "Sleep", "HybridSleepState", config_parse_strv, 0, &hybrid_state }, - { "Sleep", "HibernateDelaySec", config_parse_sec, 0, &delay}, + { "Sleep", "AllowSuspend", config_parse_tristate, 0, &allow_suspend }, + { "Sleep", "AllowHibernation", config_parse_tristate, 0, &allow_hibernate }, + { "Sleep", "AllowSuspendThenHibernate", config_parse_tristate, 0, &allow_s2h }, + { "Sleep", "AllowHybridSleep", config_parse_tristate, 0, &allow_hybrid_sleep }, + + { "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_mode }, + { "Sleep", "SuspendState", config_parse_strv, 0, &suspend_state }, + { "Sleep", "HibernateMode", config_parse_strv, 0, &hibernate_mode }, + { "Sleep", "HibernateState", config_parse_strv, 0, &hibernate_state }, + { "Sleep", "HybridSleepMode", config_parse_strv, 0, &hybrid_mode }, + { "Sleep", "HybridSleepState", config_parse_strv, 0, &hybrid_state }, + + { "Sleep", "HibernateDelaySec", config_parse_sec, 0, &delay}, {} }; @@ -51,51 +61,63 @@ int parse_sleep_config(const char *verb, char ***_modes, char ***_states, usec_t CONFIG_PARSE_WARN, NULL); if (streq(verb, "suspend")) { + allow = allow_suspend != 0; + /* empty by default */ modes = TAKE_PTR(suspend_mode); if (suspend_state) states = TAKE_PTR(suspend_state); else - states = strv_new("mem", "standby", "freeze", NULL); + states = strv_new("mem", "standby", "freeze"); } else if (streq(verb, "hibernate")) { + allow = allow_hibernate != 0; + if (hibernate_mode) modes = TAKE_PTR(hibernate_mode); else - modes = strv_new("platform", "shutdown", NULL); + modes = strv_new("platform", "shutdown"); if (hibernate_state) states = TAKE_PTR(hibernate_state); else - states = strv_new("disk", NULL); + states = strv_new("disk"); } else if (streq(verb, "hybrid-sleep")) { + allow = allow_hybrid_sleep > 0 || + (allow_suspend != 0 && allow_hibernate != 0); + if (hybrid_mode) modes = TAKE_PTR(hybrid_mode); else - modes = strv_new("suspend", "platform", "shutdown", NULL); + modes = strv_new("suspend", "platform", "shutdown"); if (hybrid_state) states = TAKE_PTR(hybrid_state); else - states = strv_new("disk", NULL); + states = strv_new("disk"); + + } else if (streq(verb, "suspend-then-hibernate")) { + allow = allow_s2h > 0 || + (allow_suspend != 0 && allow_hibernate != 0); - } else if (streq(verb, "suspend-then-hibernate")) modes = states = NULL; - else + } else assert_not_reached("what verb"); if ((!modes && STR_IN_SET(verb, "hibernate", "hybrid-sleep")) || (!states && !streq(verb, "suspend-then-hibernate"))) return log_oom(); - if (_modes) - *_modes = TAKE_PTR(modes); - if (_states) - *_states = TAKE_PTR(states); - if (_delay) - *_delay = delay; + if (ret_allow) + *ret_allow = allow; + if (ret_modes) + *ret_modes = TAKE_PTR(modes); + if (ret_states) + *ret_states = TAKE_PTR(states); + if (ret_delay) + *ret_delay = delay; return 0; } @@ -138,12 +160,16 @@ int can_sleep_disk(char **types) { return true; /* If /sys is read-only we cannot sleep */ - if (access("/sys/power/disk", W_OK) < 0) + if (access("/sys/power/disk", W_OK) < 0) { + log_debug_errno(errno, "/sys/power/disk is not writable: %m"); return false; + } r = read_one_line_file("/sys/power/disk", &p); - if (r < 0) + if (r < 0) { + log_debug_errno(r, "Couldn't read /sys/power/disk: %m"); return false; + } STRV_FOREACH(type, types) { const char *word, *state; @@ -193,18 +219,30 @@ int find_hibernate_location(char **device, char **type, size_t *size, size_t *us "%zu " /* used */ "%*i\n", /* priority */ &dev_field, &type_field, &size_field, &used_field); + if (k == EOF) + break; if (k != 4) { - if (k == EOF) - break; - log_warning("Failed to parse /proc/swaps:%u", i); continue; } - if (streq(type_field, "partition") && endswith(dev_field, "\\040(deleted)")) { - log_warning("Ignoring deleted swapfile '%s'.", dev_field); - continue; + if (streq(type_field, "file")) { + + if (endswith(dev_field, "\\040(deleted)")) { + log_warning("Ignoring deleted swap file '%s'.", dev_field); + continue; + } + + } else if (streq(type_field, "partition")) { + const char *fn; + + fn = path_startswith(dev_field, "/dev/"); + if (fn && startswith(fn, "zram")) { + log_debug("Ignoring compressed RAM swap device '%s'.", dev_field); + continue; + } } + if (device) *device = TAKE_PTR(dev_field); if (type) @@ -216,8 +254,8 @@ int find_hibernate_location(char **device, char **type, size_t *size, size_t *us return 0; } - log_debug("No swap partitions were found."); - return -ENOSYS; + return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), + "No swap partitions were found."); } static bool enough_swap_for_hibernation(void) { @@ -235,20 +273,19 @@ static bool enough_swap_for_hibernation(void) { r = get_proc_field("/proc/meminfo", "Active(anon)", WHITESPACE, &active); if (r < 0) { - log_error_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m"); + log_debug_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m"); return false; } r = safe_atollu(active, &act); if (r < 0) { - log_error_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m", - active); + log_debug_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m", active); return false; } r = act <= (size - used) * HIBERNATION_SWAP_THRESHOLD; - log_debug("Hibernation is %spossible, Active(anon)=%llu kB, size=%zu kB, used=%zu kB, threshold=%.2g%%", - r ? "" : "im", act, size, used, 100*HIBERNATION_SWAP_THRESHOLD); + log_debug("%s swap for hibernation, Active(anon)=%llu kB, size=%zu kB, used=%zu kB, threshold=%.2g%%", + r ? "Enough" : "Not enough", act, size, used, 100*HIBERNATION_SWAP_THRESHOLD); return r; } @@ -337,6 +374,8 @@ int read_fiemap(int fd, struct fiemap **ret) { return 0; } +static int can_sleep_internal(const char *verb, bool check_allowed); + static bool can_s2h(void) { const char *p; int r; @@ -349,8 +388,8 @@ static bool can_s2h(void) { } FOREACH_STRING(p, "suspend", "hibernate") { - r = can_sleep(p); - if (IN_SET(r, 0, -ENOSPC)) { + r = can_sleep_internal(p, false); + if (IN_SET(r, 0, -ENOSPC, -EADV)) { log_debug("Unable to %s system.", p); return false; } @@ -361,19 +400,25 @@ static bool can_s2h(void) { return true; } -int can_sleep(const char *verb) { +static int can_sleep_internal(const char *verb, bool check_allowed) { + bool allow; _cleanup_strv_free_ char **modes = NULL, **states = NULL; int r; assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate")); - if (streq(verb, "suspend-then-hibernate")) - return can_s2h(); - - r = parse_sleep_config(verb, &modes, &states, NULL); + r = parse_sleep_config(verb, &allow, &modes, &states, NULL); if (r < 0) return false; + if (check_allowed && !allow) { + log_debug("Sleep mode \"%s\" is disabled by configuration.", verb); + return false; + } + + if (streq(verb, "suspend-then-hibernate")) + return can_s2h(); + if (!can_sleep_state(states) || !can_sleep_disk(modes)) return false; @@ -385,3 +430,7 @@ int can_sleep(const char *verb) { return true; } + +int can_sleep(const char *verb) { + return can_sleep_internal(verb, true); +} |