-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- This file is part of systemd.
-
- Copyright 2013 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
+ Copyright © 2018 Dell Inc.
***/
-#include <stdio.h>
+//#include <errno.h>
+//#include <linux/fs.h>
+//#include <stdbool.h>
+//#include <stddef.h>
+//#include <stdio.h>
+//#include <string.h>
+//#include <syslog.h>
+//#include <unistd.h>
#include "alloc-util.h"
-#include "conf-parser.h"
-#include "def.h"
+//#include "conf-parser.h"
+//#include "def.h"
+//#include "env-util.h"
#include "fd-util.h"
#include "fileio.h"
-#include "log.h"
+//#include "log.h"
+//#include "macro.h"
#include "parse-util.h"
#include "sleep-config.h"
#include "string-util.h"
#include "strv.h"
-#include "util.h"
-#define USE(x, y) do{ (x) = (y); (y) = NULL; } while(0)
-
-int parse_sleep_config(const char *verb, char ***_modes, char ***_states) {
+#if 0 /// UNNEEDED by elogind
+int parse_sleep_config(const char *verb, char ***_modes, char ***_states, usec_t *_delay) {
_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;
+ _cleanup_strv_free_ char **modes, **states; /* always initialized below */
+ usec_t delay = 180 * USEC_PER_MINUTE;
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 },
+ { "Sleep", "HibernateDelaySec", config_parse_sec, 0, &delay},
{}
};
- config_parse_many(PKGSYSCONFDIR "/sleep.conf",
- CONF_PATHS_NULSTR("systemd/sleep.conf.d"),
- "Sleep\0", config_item_table_lookup, items,
- false, NULL);
+ (void) config_parse_many_nulstr(PKGSYSCONFDIR "/sleep.conf",
+ CONF_PATHS_NULSTR("elogind/sleep.conf.d"),
+ "Sleep\0", config_item_table_lookup, items,
+ CONFIG_PARSE_WARN, NULL);
if (streq(verb, "suspend")) {
/* empty by default */
- USE(modes, suspend_mode);
+ modes = TAKE_PTR(suspend_mode);
if (suspend_state)
- USE(states, suspend_state);
+ states = TAKE_PTR(suspend_state);
else
states = strv_new("mem", "standby", "freeze", NULL);
} else if (streq(verb, "hibernate")) {
if (hibernate_mode)
- USE(modes, hibernate_mode);
+ modes = TAKE_PTR(hibernate_mode);
else
modes = strv_new("platform", "shutdown", NULL);
if (hibernate_state)
- USE(states, hibernate_state);
+ states = TAKE_PTR(hibernate_state);
else
states = strv_new("disk", NULL);
} else if (streq(verb, "hybrid-sleep")) {
if (hybrid_mode)
- USE(modes, hybrid_mode);
+ modes = TAKE_PTR(hybrid_mode);
else
modes = strv_new("suspend", "platform", "shutdown", NULL);
if (hybrid_state)
- USE(states, hybrid_state);
+ states = TAKE_PTR(hybrid_state);
else
states = strv_new("disk", NULL);
- } else
+ } else if (streq(verb, "suspend-then-hibernate"))
+ modes = states = NULL;
+ else
assert_not_reached("what verb");
- if ((!modes && !streq(verb, "suspend")) || !states) {
- strv_free(modes);
- strv_free(states);
+ if ((!modes && STR_IN_SET(verb, "hibernate", "hybrid-sleep")) ||
+ (!states && !streq(verb, "suspend-then-hibernate")))
return log_oom();
- }
- *_modes = modes;
- *_states = states;
+ if (_modes)
+ *_modes = TAKE_PTR(modes);
+ if (_states)
+ *_states = TAKE_PTR(states);
+ if (_delay)
+ *_delay = delay;
+
return 0;
}
+#endif // 0
+#if 1 /// Only available in this file for elogind
+static
+#endif // 1
int can_sleep_state(char **types) {
char **type;
int r;
return false;
}
+#if 1 /// Only available in this file for elogind
+static
+#endif // 1
int can_sleep_disk(char **types) {
char **type;
int r;
#define HIBERNATION_SWAP_THRESHOLD 0.98
-static int hibernation_partition_size(size_t *size, size_t *used) {
+int find_hibernate_location(char **device, char **type, size_t *size, size_t *used) {
_cleanup_fclose_ FILE *f;
unsigned i;
- assert(size);
- assert(used);
-
f = fopen("/proc/swaps", "re");
if (!f) {
log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
(void) fscanf(f, "%*s %*s %*s %*s %*s\n");
for (i = 1;; i++) {
- _cleanup_free_ char *dev = NULL, *type = NULL;
+ _cleanup_free_ char *dev_field = NULL, *type_field = NULL;
size_t size_field, used_field;
int k;
"%zu " /* swap size */
"%zu " /* used */
"%*i\n", /* priority */
- &dev, &type, &size_field, &used_field);
+ &dev_field, &type_field, &size_field, &used_field);
if (k != 4) {
if (k == EOF)
break;
continue;
}
- if (streq(type, "partition") && endswith(dev, "\\040(deleted)")) {
- log_warning("Ignoring deleted swapfile '%s'.", dev);
+ if (streq(type_field, "partition") && endswith(dev_field, "\\040(deleted)")) {
+ log_warning("Ignoring deleted swapfile '%s'.", dev_field);
continue;
}
-
- *size = size_field;
- *used = used_field;
+ if (device)
+ *device = TAKE_PTR(dev_field);
+ if (type)
+ *type = TAKE_PTR(type_field);
+ if (size)
+ *size = size_field;
+ if (used)
+ *used = used_field;
return 0;
}
return -ENOSYS;
}
-static bool enough_memory_for_hibernation(void) {
+static bool enough_swap_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 0 /// elogind does not allow any bypass, we are never init!
+ if (getenv_bool("SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK") > 0)
+ return true;
+#endif // 0
+
+ r = find_hibernate_location(NULL, NULL, &size, &used);
if (r < 0)
return false;
return r;
}
-int can_sleep(const char *verb) {
- _cleanup_strv_free_ char **modes = NULL, **states = NULL;
+int read_fiemap(int fd, struct fiemap **ret) {
+ _cleanup_free_ struct fiemap *fiemap = NULL, *result_fiemap = NULL;
+ struct stat statinfo;
+ uint32_t result_extents = 0;
+ uint64_t fiemap_start = 0, fiemap_length;
+ const size_t n_extra = DIV_ROUND_UP(sizeof(struct fiemap), sizeof(struct fiemap_extent));
+ size_t fiemap_allocated = n_extra, result_fiemap_allocated = n_extra;
+
+ if (fstat(fd, &statinfo) < 0)
+ return log_debug_errno(errno, "Cannot determine file size: %m");
+ if (!S_ISREG(statinfo.st_mode))
+ return -ENOTTY;
+ fiemap_length = statinfo.st_size;
+
+ /* Zero this out in case we run on a file with no extents */
+ fiemap = calloc(n_extra, sizeof(struct fiemap_extent));
+ if (!fiemap)
+ return -ENOMEM;
+
+ result_fiemap = malloc_multiply(n_extra, sizeof(struct fiemap_extent));
+ if (!result_fiemap)
+ return -ENOMEM;
+
+ /* XFS filesystem has incorrect implementation of fiemap ioctl and
+ * returns extents for only one block-group at a time, so we need
+ * to handle it manually, starting the next fiemap call from the end
+ * of the last extent
+ */
+ while (fiemap_start < fiemap_length) {
+ *fiemap = (struct fiemap) {
+ .fm_start = fiemap_start,
+ .fm_length = fiemap_length,
+ .fm_flags = FIEMAP_FLAG_SYNC,
+ };
+
+ /* Find out how many extents there are */
+ if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0)
+ return log_debug_errno(errno, "Failed to read extents: %m");
+
+ /* Nothing to process */
+ if (fiemap->fm_mapped_extents == 0)
+ break;
+
+ /* Resize fiemap to allow us to read in the extents, result fiemap has to hold all
+ * the extents for the whole file. Add space for the initial struct fiemap. */
+ if (!greedy_realloc0((void**) &fiemap, &fiemap_allocated,
+ n_extra + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent)))
+ return -ENOMEM;
+
+ fiemap->fm_extent_count = fiemap->fm_mapped_extents;
+ fiemap->fm_mapped_extents = 0;
+
+ if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0)
+ return log_debug_errno(errno, "Failed to read extents: %m");
+
+ /* Resize result_fiemap to allow us to copy in the extents */
+ if (!greedy_realloc((void**) &result_fiemap, &result_fiemap_allocated,
+ n_extra + result_extents + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent)))
+ return -ENOMEM;
+
+ memcpy(result_fiemap->fm_extents + result_extents,
+ fiemap->fm_extents,
+ sizeof(struct fiemap_extent) * fiemap->fm_mapped_extents);
+
+ result_extents += fiemap->fm_mapped_extents;
+
+ /* Highly unlikely that it is zero */
+ if (_likely_(fiemap->fm_mapped_extents > 0)) {
+ uint32_t i = fiemap->fm_mapped_extents - 1;
+
+ fiemap_start = fiemap->fm_extents[i].fe_logical +
+ fiemap->fm_extents[i].fe_length;
+
+ if (fiemap->fm_extents[i].fe_flags & FIEMAP_EXTENT_LAST)
+ break;
+ }
+ }
+
+ memcpy(result_fiemap, fiemap, sizeof(struct fiemap));
+ result_fiemap->fm_mapped_extents = result_extents;
+ *ret = TAKE_PTR(result_fiemap);
+ return 0;
+}
+
+#if 0 /// elogind has to do, or better, *can* do it differently
+static bool can_s2h(void) {
+ const char *p;
int r;
+ r = access("/sys/class/rtc/rtc0/wakealarm", W_OK);
+ if (r < 0) {
+ log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
+ "/sys/class/rct/rct0/wakealarm is not writable %m");
+ return false;
+ }
+
+ FOREACH_STRING(p, "suspend", "hibernate") {
+ r = can_sleep(p);
+ if (IN_SET(r, 0, -ENOSPC)) {
+ log_debug("Unable to %s system.", p);
+ return false;
+ }
+ if (r < 0)
+ return log_debug_errno(r, "Failed to check if %s is possible: %m", p);
+ }
+
+ return true;
+}
+#else
+int can_sleep(Manager *m, const char *verb) {
+
assert(streq(verb, "suspend") ||
streq(verb, "hibernate") ||
streq(verb, "hybrid-sleep"));
+int can_sleep(const char *verb) {
+ _cleanup_strv_free_ char **modes = NULL, **states = NULL;
+ int r;
+
+ if ( streq(verb, "suspend")
+ && ( !can_sleep_state(m->suspend_state)
+ || !can_sleep_disk(m->suspend_mode) ) )
+ return false;
+ assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-to-hibernate"));
+ assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate"));
- r = parse_sleep_config(verb, &modes, &states);
+ if ( streq(verb, "hibernate")
+ && ( !can_sleep_state(m->hibernate_state)
+ || !can_sleep_disk(m->hibernate_mode) ) )
+ return false;
+ if (streq(verb, "suspend-to-hibernate"))
+ if (streq(verb, "suspend-then-hibernate"))
+ return can_s2h();
+
+ if ( streq(verb, "hybrid-sleep")
+ && ( !can_sleep_state(m->hybrid_sleep_state)
+ || !can_sleep_disk(m->hybrid_sleep_mode) ) )
+ r = parse_sleep_config(verb, &modes, &states, NULL);
if (r < 0)
return false;
return false;
return streq(verb, "suspend") || enough_memory_for_hibernation();
+ if (streq(verb, "suspend"))
+ return true;
+
+ if (!enough_memory_for_hibernation())
+ if (!enough_swap_for_hibernation())
+ return -ENOSPC;
+
+ return true;
}
+#endif // 0
~ianmdlvl / elogind.git / blobdiff