-/*-*- 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 "conf-parser.h"
-#include "sleep-config.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 "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"
-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;
+ _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},
+ {}
+ };
- 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));
- }
+ (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 */
- *modes = suspend_mode;
+ modes = TAKE_PTR(suspend_mode);
if (suspend_state)
- *states = suspend_state;
+ states = TAKE_PTR(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;
+ modes = TAKE_PTR(hibernate_mode);
else
- *modes = strv_split_nulstr("platform\0shutdown\0");
+ modes = strv_new("platform", "shutdown", NULL);
if (hibernate_state)
- *states = hibernate_state;
+ states = TAKE_PTR(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;
+ modes = TAKE_PTR(hybrid_mode);
else
- *modes = strv_split_nulstr("suspend\0platform\0shutdown\0");
+ modes = strv_new("suspend", "platform", "shutdown", NULL);
if (hybrid_state)
- *states = hybrid_state;
+ states = TAKE_PTR(hybrid_state);
else
- *states = strv_split_nulstr("disk\0");
+ states = strv_new("disk", NULL);
- hybrid_mode = hybrid_state = NULL;
- } else
+ } else if (streq(verb, "suspend-then-hibernate"))
+ modes = states = NULL;
+ else
assert_not_reached("what verb");
- if (!modes || !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();
- }
+
+ 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 *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;
}
return false;
}
+#if 1 /// Only available in this file for elogind
+static
+#endif // 1
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;
}
}
#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 find_hibernate_location(char **device, char **type, size_t *size, size_t *used) {
+ _cleanup_fclose_ FILE *f;
+ unsigned i;
+
+ 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_field = NULL, *type_field = NULL;
+ size_t size_field, used_field;
+ int k;
+
+ k = fscanf(f,
+ "%ms " /* device/file */
+ "%ms " /* type of swap */
+ "%zu " /* swap size */
+ "%zu " /* used */
+ "%*i\n", /* priority */
+ &dev_field, &type_field, &size_field, &used_field);
+ 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 (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;
+ }
+
+ log_debug("No swap partitions were found.");
+ return -ENOSYS;
+}
+
+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 = get_status_field("/proc/meminfo", "\nSwapFree:", &swapfree);
- if (r < 0) {
- log_error("Failed to retrieve SwapFree from /proc/meminfo: %s", strerror(-r));
+#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;
- }
- r = safe_atollu(swapfree, &swap);
+ r = get_proc_field("/proc/meminfo", "Active(anon)", WHITESPACE, &active);
if (r < 0) {
- log_error("Failed to parse SwapFree from /proc/meminfo: %s: %s",
- swapfree, strerror(-r));
+ log_error_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m");
return false;
}
- r = get_status_field("/proc/meminfo", "\nActive(anon):", &active);
+ r = safe_atollu(active, &act);
if (r < 0) {
- log_error("Failed to retrieve Active(anon) from /proc/meminfo: %s", strerror(-r));
+ log_error_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m",
+ active);
return false;
}
- r = safe_atollu(active, &act);
+ 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 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 ask the manager for some stuff
+static bool can_s2h(void) {
+#else
+static bool can_s2h(Manager *m) {
+#endif // 0
+ const char *p;
+ int r;
+
+ r = access("/sys/class/rtc/rtc0/wakealarm", W_OK);
if (r < 0) {
- log_error("Failed to parse Active(anon) from /proc/meminfo: %s: %s",
- active, strerror(-r));
+ log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
+ "/sys/class/rct/rct0/wakealarm is not writable %m");
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);
+ FOREACH_STRING(p, "suspend", "hibernate") {
+#if 0 /// elogind must transport a pointer to its managers instance
+ r = can_sleep(p);
+#else
+ r = can_sleep(m, p);
+#endif // 0
+ 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 r;
+ return true;
}
+
+#if 0 /// elogind has to ask the manager for some stuff
int can_sleep(const char *verb) {
_cleanup_strv_free_ char **modes = NULL, **states = NULL;
int r;
-
- assert(streq(verb, "suspend") ||
- streq(verb, "hibernate") ||
- streq(verb, "hybrid-sleep"));
-
- r = parse_sleep_config(verb, &modes, &states);
+#else
+int can_sleep(Manager *m, const char *verb) {
+ assert(m);
+
+ char **modes = streq(verb, "suspend") ? m->suspend_mode :
+ streq(verb, "hibernate") ? m->hibernate_mode :
+ m->hybrid_sleep_mode;
+ char **states = streq(verb, "suspend") ? m->suspend_state :
+ streq(verb, "hibernate") ? m->hibernate_state :
+ m->hybrid_sleep_state;
+#endif // 0
+
+ assert(STR_IN_SET(verb, "suspend", "hibernate", "hybrid-sleep", "suspend-then-hibernate"));
+
+ if (streq(verb, "suspend-then-hibernate"))
+#if 0 /// elogind must transport a pointer to its managers instance
+ return can_s2h();
+#else
+ return can_s2h(m);
+#endif // 0
+
+#if 0 /// already parsed by elogind config
+ r = parse_sleep_config(verb, &modes, &states, NULL);
if (r < 0)
return false;
+#endif // 0
if (!can_sleep_state(states) || !can_sleep_disk(modes))
return false;
- return streq(verb, "suspend") || enough_memory_for_hibernation();
+ if (streq(verb, "suspend"))
+ return true;
+
+ if (!enough_swap_for_hibernation())
+ return -ENOSPC;
+
+ return true;
}
~ianmdlvl / elogind.git / blobdiff