#include "strv.h"
#include "util.h"
-int parse_sleep_config(const char *verb, char ***modes, char ***states) {
+#define USE(x, y) do{ (x) = (y); (y) = NULL; } while(0)
+
+int parse_sleep_config(const char *verb, char ***_modes, char ***_states) {
+
_cleanup_strv_free_ char
**suspend_mode = NULL, **suspend_state = NULL,
**hibernate_mode = NULL, **hibernate_state = NULL,
**hybrid_mode = NULL, **hybrid_state = NULL;
+ char **modes, **states;
const ConfigTableItem items[] = {
{ "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_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 },
- {}};
+ {}
+ };
- int r;
- FILE _cleanup_fclose_ *f;
-
- f = fopen(PKGSYSCONFDIR "/sleep.conf", "re");
- if (!f)
- log_full(errno == ENOENT ? LOG_DEBUG: LOG_WARNING,
- "Failed to open configuration file " PKGSYSCONFDIR "/sleep.conf: %m");
- else {
- r = config_parse(NULL, PKGSYSCONFDIR "/sleep.conf", f, "Sleep\0",
- config_item_table_lookup, (void*) items, false, false, NULL);
- if (r < 0)
- log_warning("Failed to parse configuration file: %s", strerror(-r));
- }
+ config_parse_many(PKGSYSCONFDIR "/sleep.conf",
+ CONF_DIRS_NULSTR("systemd/sleep.conf"),
+ "Sleep\0", config_item_table_lookup, items,
+ false, NULL);
if (streq(verb, "suspend")) {
/* empty by default */
- *modes = suspend_mode;
+ USE(modes, suspend_mode);
if (suspend_state)
- *states = suspend_state;
+ USE(states, suspend_state);
else
- *states = strv_split_nulstr("mem\0standby\0freeze\0");
+ states = strv_new("mem", "standby", "freeze", NULL);
- suspend_mode = suspend_state = NULL;
} else if (streq(verb, "hibernate")) {
if (hibernate_mode)
- *modes = hibernate_mode;
+ USE(modes, hibernate_mode);
else
- *modes = strv_split_nulstr("platform\0shutdown\0");
+ modes = strv_new("platform", "shutdown", NULL);
if (hibernate_state)
- *states = hibernate_state;
+ USE(states, hibernate_state);
else
- *states = strv_split_nulstr("disk\0");
+ states = strv_new("disk", NULL);
- hibernate_mode = hibernate_state = NULL;
} else if (streq(verb, "hybrid-sleep")) {
if (hybrid_mode)
- *modes = hybrid_mode;
+ USE(modes, hybrid_mode);
else
- *modes = strv_split_nulstr("suspend\0platform\0shutdown\0");
+ modes = strv_new("suspend", "platform", "shutdown", NULL);
if (hybrid_state)
- *states = hybrid_state;
+ USE(states, hybrid_state);
else
- *states = strv_split_nulstr("disk\0");
+ states = strv_new("disk", NULL);
- hybrid_mode = hybrid_state = NULL;
} else
assert_not_reached("what verb");
- if (!modes || !states) {
- strv_free(*modes);
- strv_free(*states);
+ if ((!modes && !streq(verb, "suspend")) || !states) {
+ strv_free(modes);
+ strv_free(states);
return log_oom();
}
+ *_modes = modes;
+ *_states = states;
return 0;
}
int can_sleep_state(char **types) {
- char *w, *state, **type;
+ char **type;
int r;
_cleanup_free_ char *p = NULL;
return false;
STRV_FOREACH(type, types) {
+ const char *word, *state;
size_t l, k;
k = strlen(*type);
- FOREACH_WORD_SEPARATOR(w, l, p, WHITESPACE, state)
- if (l == k && memcmp(w, *type, l) == 0)
+ FOREACH_WORD_SEPARATOR(word, l, p, WHITESPACE, state)
+ if (l == k && memcmp(word, *type, l) == 0)
return true;
}
}
int can_sleep_disk(char **types) {
- char *w, *state, **type;
+ char **type;
int r;
_cleanup_free_ char *p = NULL;
return false;
STRV_FOREACH(type, types) {
+ const char *word, *state;
size_t l, k;
k = strlen(*type);
- FOREACH_WORD_SEPARATOR(w, l, p, WHITESPACE, state) {
- if (l == k && memcmp(w, *type, l) == 0)
+ FOREACH_WORD_SEPARATOR(word, l, p, WHITESPACE, state) {
+ if (l == k && memcmp(word, *type, l) == 0)
return true;
- if (l == k + 2 && w[0] == '[' && memcmp(w + 1, *type, l - 2) == 0 && w[l-1] == ']')
+ if (l == k + 2 &&
+ word[0] == '[' &&
+ memcmp(word + 1, *type, l - 2) == 0 &&
+ word[l-1] == ']')
return true;
}
}
return false;
}
+#define HIBERNATION_SWAP_THRESHOLD 0.98
+
+static int hibernation_partition_size(size_t *size, size_t *used) {
+ _cleanup_fclose_ FILE *f;
+ int i;
+
+ assert(size);
+ assert(used);
+
+ f = fopen("/proc/swaps", "re");
+ if (!f) {
+ log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
+ "Failed to retrieve open /proc/swaps: %m");
+ assert(errno > 0);
+ return -errno;
+ }
+
+ (void) fscanf(f, "%*s %*s %*s %*s %*s\n");
+
+ for (i = 1;; i++) {
+ _cleanup_free_ char *dev = NULL, *type = NULL;
+ size_t size_field, used_field;
+ int k;
+
+ k = fscanf(f,
+ "%ms " /* device/file */
+ "%ms " /* type of swap */
+ "%zd " /* swap size */
+ "%zd " /* used */
+ "%*i\n", /* priority */
+ &dev, &type, &size_field, &used_field);
+ if (k != 4) {
+ if (k == EOF)
+ break;
+
+ log_warning("Failed to parse /proc/swaps:%u", i);
+ continue;
+ }
+
+ if (streq(type, "partition") && endswith(dev, "\\040(deleted)")) {
+ log_warning("Ignoring deleted swapfile '%s'.", dev);
+ continue;
+ }
+
+ *size = size_field;
+ *used = used_field;
+ return 0;
+ }
+
+ log_debug("No swap partitions were found.");
+ return -ENOSYS;
+}
+
+static bool enough_memory_for_hibernation(void) {
+ _cleanup_free_ char *active = NULL;
+ unsigned long long act = 0;
+ size_t size = 0, used = 0;
+ int r;
+
+ r = hibernation_partition_size(&size, &used);
+ if (r < 0)
+ return false;
+
+ r = get_status_field("/proc/meminfo", "\nActive(anon):", &active);
+ if (r < 0) {
+ log_error_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);
+ 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);
+
+ return r;
+}
+
int can_sleep(const char *verb) {
_cleanup_strv_free_ char **modes = NULL, **states = NULL;
int r;
if (r < 0)
return false;
- return can_sleep_state(states) && can_sleep_disk(modes);
+ if (!can_sleep_state(states) || !can_sleep_disk(modes))
+ return false;
+
+ return streq(verb, "suspend") || enough_memory_for_hibernation();
}
~ianmdlvl / elogind.git / blobdiff