#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 },
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;
}
#define HIBERNATION_SWAP_THRESHOLD 0.98
-static bool enough_memory_for_hibernation(void) {
- _cleanup_free_ char *active = NULL, *swapfree = NULL;
- unsigned long long act, swap;
- int r;
+static int hibernation_partition_size(size_t *size, size_t *used) {
+ _cleanup_fclose_ FILE *f;
+ int i;
- r = get_status_field("/proc/meminfo", "\nSwapFree:", &swapfree);
- if (r < 0) {
- log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING,
- "Failed to retrieve SwapFree from /proc/meminfo: %s", strerror(-r));
- return false;
+ 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;
}
- r = safe_atollu(swapfree, &swap);
- if (r < 0) {
- log_error("Failed to parse SwapFree from /proc/meminfo: %s: %s",
- swapfree, strerror(-r));
- return false;
+ (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("Failed to retrieve Active(anon) from /proc/meminfo: %s", strerror(-r));
return false;
}
- r = act <= swap * HIBERNATION_SWAP_THRESHOLD;
- log_debug("Hibernation is %spossible, Active(anon)=%llu kB, SwapFree=%llu kB, threshold=%.2g%%",
- r ? "" : "im", act, swap, 100*HIBERNATION_SWAP_THRESHOLD);
+ 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;
}