//#include "special.h"
#include "string-table.h"
#include "string-util.h"
+#include "stdio-util.h"
#define CGROUP_CPU_QUOTA_PERIOD_USEC ((usec_t) 100 * USEC_PER_MSEC)
#if 0 /// UNNEEDED by elogind
+static void cgroup_compat_warn(void) {
+ static bool cgroup_compat_warned = false;
+
+ if (cgroup_compat_warned)
+ return;
+
+ log_warning("cgroup compatibility translation between legacy and unified hierarchy settings activated. See cgroup-compat debug messages for details.");
+ cgroup_compat_warned = true;
+}
+
+#define log_cgroup_compat(unit, fmt, ...) do { \
+ cgroup_compat_warn(); \
+ log_unit_debug(unit, "cgroup-compat: " fmt, ##__VA_ARGS__); \
+ } while (false)
+
void cgroup_context_init(CGroupContext *c) {
assert(c);
/* Initialize everything to the kernel defaults, assuming the
* structure is preinitialized to 0 */
+ c->cpu_weight = CGROUP_WEIGHT_INVALID;
+ c->startup_cpu_weight = CGROUP_WEIGHT_INVALID;
+ c->cpu_quota_per_sec_usec = USEC_INFINITY;
+
c->cpu_shares = CGROUP_CPU_SHARES_INVALID;
c->startup_cpu_shares = CGROUP_CPU_SHARES_INVALID;
- c->cpu_quota_per_sec_usec = USEC_INFINITY;
c->memory_high = CGROUP_LIMIT_MAX;
c->memory_max = CGROUP_LIMIT_MAX;
+ c->memory_swap_max = CGROUP_LIMIT_MAX;
c->memory_limit = CGROUP_LIMIT_MAX;
"%sBlockIOAccounting=%s\n"
"%sMemoryAccounting=%s\n"
"%sTasksAccounting=%s\n"
+ "%sCPUWeight=%" PRIu64 "\n"
+ "%sStartupCPUWeight=%" PRIu64 "\n"
"%sCPUShares=%" PRIu64 "\n"
"%sStartupCPUShares=%" PRIu64 "\n"
"%sCPUQuotaPerSecSec=%s\n"
"%sMemoryLow=%" PRIu64 "\n"
"%sMemoryHigh=%" PRIu64 "\n"
"%sMemoryMax=%" PRIu64 "\n"
+ "%sMemorySwapMax=%" PRIu64 "\n"
"%sMemoryLimit=%" PRIu64 "\n"
"%sTasksMax=%" PRIu64 "\n"
"%sDevicePolicy=%s\n"
prefix, yes_no(c->blockio_accounting),
prefix, yes_no(c->memory_accounting),
prefix, yes_no(c->tasks_accounting),
+ prefix, c->cpu_weight,
+ prefix, c->startup_cpu_weight,
prefix, c->cpu_shares,
prefix, c->startup_cpu_shares,
prefix, format_timespan(u, sizeof(u), c->cpu_quota_per_sec_usec, 1),
prefix, c->memory_low,
prefix, c->memory_high,
prefix, c->memory_max,
+ prefix, c->memory_swap_max,
prefix, c->memory_limit,
prefix, c->tasks_max,
prefix, cgroup_device_policy_to_string(c->device_policy),
static int whitelist_device(const char *path, const char *node, const char *acc) {
char buf[2+DECIMAL_STR_MAX(dev_t)*2+2+4];
struct stat st;
+ bool ignore_notfound;
int r;
assert(path);
assert(acc);
+ if (node[0] == '-') {
+ /* Non-existent paths starting with "-" must be silently ignored */
+ node++;
+ ignore_notfound = true;
+ } else
+ ignore_notfound = false;
+
if (stat(node, &st) < 0) {
- log_warning("Couldn't stat device %s", node);
- return -errno;
+ if (errno == ENOENT && ignore_notfound)
+ return 0;
+
+ return log_warning_errno(errno, "Couldn't stat device %s: %m", node);
}
if (!S_ISCHR(st.st_mode) && !S_ISBLK(st.st_mode)) {
return -errno;
}
+static bool cgroup_context_has_cpu_weight(CGroupContext *c) {
+ return c->cpu_weight != CGROUP_WEIGHT_INVALID ||
+ c->startup_cpu_weight != CGROUP_WEIGHT_INVALID;
+}
+
+static bool cgroup_context_has_cpu_shares(CGroupContext *c) {
+ return c->cpu_shares != CGROUP_CPU_SHARES_INVALID ||
+ c->startup_cpu_shares != CGROUP_CPU_SHARES_INVALID;
+}
+
+static uint64_t cgroup_context_cpu_weight(CGroupContext *c, ManagerState state) {
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_cpu_weight != CGROUP_WEIGHT_INVALID)
+ return c->startup_cpu_weight;
+ else if (c->cpu_weight != CGROUP_WEIGHT_INVALID)
+ return c->cpu_weight;
+ else
+ return CGROUP_WEIGHT_DEFAULT;
+}
+
+static uint64_t cgroup_context_cpu_shares(CGroupContext *c, ManagerState state) {
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_cpu_shares != CGROUP_CPU_SHARES_INVALID)
+ return c->startup_cpu_shares;
+ else if (c->cpu_shares != CGROUP_CPU_SHARES_INVALID)
+ return c->cpu_shares;
+ else
+ return CGROUP_CPU_SHARES_DEFAULT;
+}
+
+static void cgroup_apply_unified_cpu_config(Unit *u, uint64_t weight, uint64_t quota) {
+ char buf[MAX(DECIMAL_STR_MAX(uint64_t) + 1, (DECIMAL_STR_MAX(usec_t) + 1) * 2)];
+ int r;
+
+ xsprintf(buf, "%" PRIu64 "\n", weight);
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.weight", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set cpu.weight: %m");
+
+ if (quota != USEC_INFINITY)
+ xsprintf(buf, USEC_FMT " " USEC_FMT "\n",
+ quota * CGROUP_CPU_QUOTA_PERIOD_USEC / USEC_PER_SEC, CGROUP_CPU_QUOTA_PERIOD_USEC);
+ else
+ xsprintf(buf, "max " USEC_FMT "\n", CGROUP_CPU_QUOTA_PERIOD_USEC);
+
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.max", buf);
+
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set cpu.max: %m");
+}
+
+static void cgroup_apply_legacy_cpu_config(Unit *u, uint64_t shares, uint64_t quota) {
+ char buf[MAX(DECIMAL_STR_MAX(uint64_t), DECIMAL_STR_MAX(usec_t)) + 1];
+ int r;
+
+ xsprintf(buf, "%" PRIu64 "\n", shares);
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.shares", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set cpu.shares: %m");
+
+ xsprintf(buf, USEC_FMT "\n", CGROUP_CPU_QUOTA_PERIOD_USEC);
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.cfs_period_us", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set cpu.cfs_period_us: %m");
+
+ if (quota != USEC_INFINITY) {
+ xsprintf(buf, USEC_FMT "\n", quota * CGROUP_CPU_QUOTA_PERIOD_USEC / USEC_PER_SEC);
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.cfs_quota_us", buf);
+ } else
+ r = cg_set_attribute("cpu", u->cgroup_path, "cpu.cfs_quota_us", "-1");
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set cpu.cfs_quota_us: %m");
+}
+
+static uint64_t cgroup_cpu_shares_to_weight(uint64_t shares) {
+ return CLAMP(shares * CGROUP_WEIGHT_DEFAULT / CGROUP_CPU_SHARES_DEFAULT,
+ CGROUP_WEIGHT_MIN, CGROUP_WEIGHT_MAX);
+}
+
+static uint64_t cgroup_cpu_weight_to_shares(uint64_t weight) {
+ return CLAMP(weight * CGROUP_CPU_SHARES_DEFAULT / CGROUP_WEIGHT_DEFAULT,
+ CGROUP_CPU_SHARES_MIN, CGROUP_CPU_SHARES_MAX);
+}
+
static bool cgroup_context_has_io_config(CGroupContext *c) {
return c->io_accounting ||
c->io_weight != CGROUP_WEIGHT_INVALID ||
}
static bool cgroup_context_has_unified_memory_config(CGroupContext *c) {
- return c->memory_low > 0 || c->memory_high != CGROUP_LIMIT_MAX || c->memory_max != CGROUP_LIMIT_MAX;
+ return c->memory_low > 0 || c->memory_high != CGROUP_LIMIT_MAX || c->memory_max != CGROUP_LIMIT_MAX || c->memory_swap_max != CGROUP_LIMIT_MAX;
}
static void cgroup_apply_unified_memory_limit(Unit *u, const char *file, uint64_t v) {
* and missing cgroups, i.e. EROFS and ENOENT. */
if ((mask & CGROUP_MASK_CPU) && !is_root) {
- char buf[MAX(DECIMAL_STR_MAX(uint64_t), DECIMAL_STR_MAX(usec_t)) + 1];
+ bool has_weight = cgroup_context_has_cpu_weight(c);
+ bool has_shares = cgroup_context_has_cpu_shares(c);
- sprintf(buf, "%" PRIu64 "\n",
- IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) && c->startup_cpu_shares != CGROUP_CPU_SHARES_INVALID ? c->startup_cpu_shares :
- c->cpu_shares != CGROUP_CPU_SHARES_INVALID ? c->cpu_shares : CGROUP_CPU_SHARES_DEFAULT);
- r = cg_set_attribute("cpu", path, "cpu.shares", buf);
- if (r < 0)
- log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.shares: %m");
+ if (cg_all_unified()) {
+ uint64_t weight;
- sprintf(buf, USEC_FMT "\n", CGROUP_CPU_QUOTA_PERIOD_USEC);
- r = cg_set_attribute("cpu", path, "cpu.cfs_period_us", buf);
- if (r < 0)
- log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.cfs_period_us: %m");
+ if (has_weight)
+ weight = cgroup_context_cpu_weight(c, state);
+ else if (has_shares) {
+ uint64_t shares = cgroup_context_cpu_shares(c, state);
- if (c->cpu_quota_per_sec_usec != USEC_INFINITY) {
- sprintf(buf, USEC_FMT "\n", c->cpu_quota_per_sec_usec * CGROUP_CPU_QUOTA_PERIOD_USEC / USEC_PER_SEC);
- r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", buf);
- } else
- r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", "-1");
- if (r < 0)
- log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.cfs_quota_us: %m");
+ weight = cgroup_cpu_shares_to_weight(shares);
+
+ log_cgroup_compat(u, "Applying [Startup]CpuShares %" PRIu64 " as [Startup]CpuWeight %" PRIu64 " on %s",
+ shares, weight, path);
+ } else
+ weight = CGROUP_WEIGHT_DEFAULT;
+
+ cgroup_apply_unified_cpu_config(u, weight, c->cpu_quota_per_sec_usec);
+ } else {
+ uint64_t shares;
+
+ if (has_weight) {
+ uint64_t weight = cgroup_context_cpu_weight(c, state);
+
+ shares = cgroup_cpu_weight_to_shares(weight);
+
+ log_cgroup_compat(u, "Applying [Startup]CpuWeight %" PRIu64 " as [Startup]CpuShares %" PRIu64 " on %s",
+ weight, shares, path);
+ } else if (has_shares)
+ shares = cgroup_context_cpu_shares(c, state);
+ else
+ shares = CGROUP_CPU_SHARES_DEFAULT;
+
+ cgroup_apply_legacy_cpu_config(u, shares, c->cpu_quota_per_sec_usec);
+ }
}
if (mask & CGROUP_MASK_IO) {
if (has_io)
weight = cgroup_context_io_weight(c, state);
- else if (has_blockio)
- weight = cgroup_weight_blkio_to_io(cgroup_context_blkio_weight(c, state));
- else
+ else if (has_blockio) {
+ uint64_t blkio_weight = cgroup_context_blkio_weight(c, state);
+
+ weight = cgroup_weight_blkio_to_io(blkio_weight);
+
+ log_cgroup_compat(u, "Applying [Startup]BlockIOWeight %" PRIu64 " as [Startup]IOWeight %" PRIu64,
+ blkio_weight, weight);
+ } else
weight = CGROUP_WEIGHT_DEFAULT;
xsprintf(buf, "default %" PRIu64 "\n", weight);
CGroupBlockIODeviceWeight *w;
/* FIXME: no way to reset this list */
- LIST_FOREACH(device_weights, w, c->blockio_device_weights)
- cgroup_apply_io_device_weight(u, w->path, cgroup_weight_blkio_to_io(w->weight));
+ LIST_FOREACH(device_weights, w, c->blockio_device_weights) {
+ weight = cgroup_weight_blkio_to_io(w->weight);
+
+ log_cgroup_compat(u, "Applying BlockIODeviceWeight %" PRIu64 " as IODeviceWeight %" PRIu64 " for %s",
+ w->weight, weight, w->path);
+
+ cgroup_apply_io_device_weight(u, w->path, weight);
+ }
}
}
limits[CGROUP_IO_RBPS_MAX] = b->rbps;
limits[CGROUP_IO_WBPS_MAX] = b->wbps;
+ log_cgroup_compat(u, "Applying BlockIO{Read|Write}Bandwidth %" PRIu64 " %" PRIu64 " as IO{Read|Write}BandwidthMax for %s",
+ b->rbps, b->wbps, b->path);
+
if (!cgroup_apply_io_device_limit(u, b->path, limits))
cgroup_context_free_blockio_device_bandwidth(c, b);
}
char buf[DECIMAL_STR_MAX(uint64_t)+1];
uint64_t weight;
- if (has_blockio)
- weight = cgroup_context_blkio_weight(c, state);
- else if (has_io)
+ if (has_io) {
+ uint64_t io_weight = cgroup_context_io_weight(c, state);
+
weight = cgroup_weight_io_to_blkio(cgroup_context_io_weight(c, state));
+
+ log_cgroup_compat(u, "Applying [Startup]IOWeight %" PRIu64 " as [Startup]BlockIOWeight %" PRIu64,
+ io_weight, weight);
+ } else if (has_blockio)
+ weight = cgroup_context_blkio_weight(c, state);
else
weight = CGROUP_BLKIO_WEIGHT_DEFAULT;
log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
"Failed to set blkio.weight: %m");
- if (has_blockio) {
+ if (has_io) {
+ CGroupIODeviceWeight *w;
+
+ /* FIXME: no way to reset this list */
+ LIST_FOREACH(device_weights, w, c->io_device_weights) {
+ weight = cgroup_weight_io_to_blkio(w->weight);
+
+ log_cgroup_compat(u, "Applying IODeviceWeight %" PRIu64 " as BlockIODeviceWeight %" PRIu64 " for %s",
+ w->weight, weight, w->path);
+
+ cgroup_apply_blkio_device_weight(u, w->path, weight);
+ }
+ } else if (has_blockio) {
CGroupBlockIODeviceWeight *w;
/* FIXME: no way to reset this list */
LIST_FOREACH(device_weights, w, c->blockio_device_weights)
cgroup_apply_blkio_device_weight(u, w->path, w->weight);
- } else if (has_io) {
- CGroupIODeviceWeight *w;
-
- /* FIXME: no way to reset this list */
- LIST_FOREACH(device_weights, w, c->io_device_weights)
- cgroup_apply_blkio_device_weight(u, w->path, cgroup_weight_io_to_blkio(w->weight));
}
}
/* Apply limits and free ones without config. */
- if (has_blockio) {
- CGroupBlockIODeviceBandwidth *b, *next;
-
- LIST_FOREACH_SAFE(device_bandwidths, b, next, c->blockio_device_bandwidths) {
- if (!cgroup_apply_blkio_device_limit(u, b->path, b->rbps, b->wbps))
- cgroup_context_free_blockio_device_bandwidth(c, b);
- }
- } else if (has_io) {
+ if (has_io) {
CGroupIODeviceLimit *l, *next;
LIST_FOREACH_SAFE(device_limits, l, next, c->io_device_limits) {
+ log_cgroup_compat(u, "Applying IO{Read|Write}Bandwidth %" PRIu64 " %" PRIu64 " as BlockIO{Read|Write}BandwidthMax for %s",
+ l->limits[CGROUP_IO_RBPS_MAX], l->limits[CGROUP_IO_WBPS_MAX], l->path);
+
if (!cgroup_apply_blkio_device_limit(u, l->path, l->limits[CGROUP_IO_RBPS_MAX], l->limits[CGROUP_IO_WBPS_MAX]))
cgroup_context_free_io_device_limit(c, l);
}
+ } else if (has_blockio) {
+ CGroupBlockIODeviceBandwidth *b, *next;
+
+ LIST_FOREACH_SAFE(device_bandwidths, b, next, c->blockio_device_bandwidths)
+ if (!cgroup_apply_blkio_device_limit(u, b->path, b->rbps, b->wbps))
+ cgroup_context_free_blockio_device_bandwidth(c, b);
}
}
if ((mask & CGROUP_MASK_MEMORY) && !is_root) {
- if (cg_unified() > 0) {
- uint64_t max = c->memory_max;
+ if (cg_all_unified()) {
+ uint64_t max;
+ uint64_t swap_max = CGROUP_LIMIT_MAX;
- if (cgroup_context_has_unified_memory_config(c))
+ if (cgroup_context_has_unified_memory_config(c)) {
max = c->memory_max;
- else
+ swap_max = c->memory_swap_max;
+ } else {
max = c->memory_limit;
+ if (max != CGROUP_LIMIT_MAX)
+ log_cgroup_compat(u, "Applying MemoryLimit %" PRIu64 " as MemoryMax", max);
+ }
+
cgroup_apply_unified_memory_limit(u, "memory.low", c->memory_low);
cgroup_apply_unified_memory_limit(u, "memory.high", c->memory_high);
cgroup_apply_unified_memory_limit(u, "memory.max", max);
+ cgroup_apply_unified_memory_limit(u, "memory.swap.max", swap_max);
} else {
char buf[DECIMAL_STR_MAX(uint64_t) + 1];
+ uint64_t val;
+
+ if (cgroup_context_has_unified_memory_config(c)) {
+ val = c->memory_max;
+ log_cgroup_compat(u, "Applying MemoryMax %" PRIi64 " as MemoryLimit", val);
+ } else
+ val = c->memory_limit;
- if (c->memory_limit != CGROUP_LIMIT_MAX)
- xsprintf(buf, "%" PRIu64 "\n", c->memory_limit);
+ if (val == CGROUP_LIMIT_MAX)
+ strncpy(buf, "-1\n", sizeof(buf));
else
- xsprintf(buf, "%" PRIu64 "\n", c->memory_max);
+ xsprintf(buf, "%" PRIu64 "\n", val);
r = cg_set_attribute("memory", path, "memory.limit_in_bytes", buf);
if (r < 0)
"/dev/random\0" "rwm\0"
"/dev/urandom\0" "rwm\0"
"/dev/tty\0" "rwm\0"
- "/dev/pts/ptmx\0" "rw\0"; /* /dev/pts/ptmx may not be duplicated, but accessed */
+ "/dev/pts/ptmx\0" "rw\0" /* /dev/pts/ptmx may not be duplicated, but accessed */
+ /* Allow /run/elogind/inaccessible/{chr,blk} devices for mapping InaccessiblePaths */
+ /* Allow /run/systemd/inaccessible/{chr,blk} devices for mapping InaccessiblePaths */
+ "-/run/systemd/inaccessible/chr\0" "rwm\0"
+ "-/run/systemd/inaccessible/blk\0" "rwm\0";
const char *x, *y;
}
LIST_FOREACH(device_allow, a, c->device_allow) {
- char acc[4];
+ char acc[4], *val;
unsigned k = 0;
if (a->r)
if (startswith(a->path, "/dev/"))
whitelist_device(path, a->path, acc);
- else if (startswith(a->path, "block-"))
- whitelist_major(path, a->path + 6, 'b', acc);
- else if (startswith(a->path, "char-"))
- whitelist_major(path, a->path + 5, 'c', acc);
+ else if ((val = startswith(a->path, "block-")))
+ whitelist_major(path, val, 'b', acc);
+ else if ((val = startswith(a->path, "char-")))
+ whitelist_major(path, val, 'c', acc);
else
log_unit_debug(u, "Ignoring device %s while writing cgroup attribute.", a->path);
}
if ((mask & CGROUP_MASK_PIDS) && !is_root) {
- if (c->tasks_max != (uint64_t) -1) {
+ if (c->tasks_max != CGROUP_LIMIT_MAX) {
char buf[DECIMAL_STR_MAX(uint64_t) + 2];
sprintf(buf, "%" PRIu64 "\n", c->tasks_max);
/* Figure out which controllers we need */
if (c->cpu_accounting ||
- c->cpu_shares != CGROUP_CPU_SHARES_INVALID ||
- c->startup_cpu_shares != CGROUP_CPU_SHARES_INVALID ||
+ cgroup_context_has_cpu_weight(c) ||
+ cgroup_context_has_cpu_shares(c) ||
c->cpu_quota_per_sec_usec != USEC_INFINITY)
mask |= CGROUP_MASK_CPUACCT | CGROUP_MASK_CPU;
e = unit_get_exec_context(u);
if (!e ||
exec_context_maintains_privileges(e) ||
- cg_unified() > 0)
+ cg_all_unified())
return _CGROUP_MASK_ALL;
}
return NULL;
if (slice)
- return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL);
+ return strjoin(u->manager->cgroup_root, "/", slice, "/",
+ escaped);
else
- return strjoin(u->manager->cgroup_root, "/", escaped, NULL);
+ return strjoin(u->manager->cgroup_root, "/", escaped);
}
int unit_set_cgroup_path(Unit *u, const char *path) {
return 0;
/* Only applies to the unified hierarchy */
- r = cg_unified();
- if (r < 0)
- return log_unit_error_errno(u, r, "Failed detect wether the unified hierarchy is used: %m");
- if (r == 0)
+ if (!cg_unified(SYSTEMD_CGROUP_CONTROLLER))
return 0;
/* Don't watch the root slice, it's pointless. */
return 0;
}
+static void cgroup_xattr_apply(Unit *u) {
+ char ids[SD_ID128_STRING_MAX];
+ int r;
+
+ assert(u);
+
+ if (!MANAGER_IS_SYSTEM(u->manager))
+ return;
+
+ if (sd_id128_is_null(u->invocation_id))
+ return;
+
+ r = cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path,
+ "trusted.invocation_id",
+ sd_id128_to_string(u->invocation_id, ids), 32,
+ 0);
+ if (r < 0)
+ log_unit_warning_errno(u, r, "Failed to set invocation ID on control group %s, ignoring: %m", u->cgroup_path);
+}
+
static bool unit_has_mask_realized(Unit *u, CGroupMask target_mask, CGroupMask enable_mask) {
assert(u);
/* Finally, apply the necessary attributes. */
cgroup_context_apply(u, target_mask, state);
+ cgroup_xattr_apply(u);
return 0;
}
if (!u->cgroup_path)
return;
+ (void) unit_get_cpu_usage(u, NULL); /* Cache the last CPU usage value before we destroy the cgroup */
+
is_root_slice = unit_has_name(u, SPECIAL_ROOT_SLICE);
r = cg_trim_everywhere(u->manager->cgroup_supported, u->cgroup_path, !is_root_slice);
while ((r = cg_read_subgroup(d, &fn)) > 0) {
_cleanup_free_ char *p = NULL;
- p = strjoin(path, "/", fn, NULL);
+ p = strjoin(path, "/", fn);
free(fn);
if (!p)
if (!u->cgroup_path)
return -ENOENT;
- if (cg_unified() > 0) /* On unified we can use proper notifications */
+ if (cg_unified(SYSTEMD_CGROUP_CONTROLLER)) /* On unified we can use proper notifications */
return 0;
return unit_watch_pids_in_path(u, u->cgroup_path);
int manager_setup_cgroup(Manager *m) {
_cleanup_free_ char *path = NULL;
CGroupController c;
- int r, unified;
+ int r;
char *e;
assert(m);
if (r < 0)
return log_error_errno(r, "Cannot find cgroup mount point: %m");
- unified = cg_unified();
- if (unified < 0)
+ r = cg_unified_flush();
+ if (r < 0)
return log_error_errno(r, "Couldn't determine if we are running in the unified hierarchy: %m");
- if (unified > 0)
+
+ if (cg_all_unified())
log_debug("Unified cgroup hierarchy is located at %s.", path);
+ else if (cg_unified(SYSTEMD_CGROUP_CONTROLLER))
+ log_debug("Unified cgroup hierarchy is located at %s. Controllers are on legacy hierarchies.", path);
else
log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
const char *scope_path;
/* 3. Install agent */
- if (unified) {
+ if (cg_unified(SYSTEMD_CGROUP_CONTROLLER)) {
- /* In the unified hierarchy we can can get
+ /* In the unified hierarchy we can get
* cgroup empty notifications via inotify. */
#if 0 /// elogind does not support the unified hierarchy, yet.
/* also, move all other userspace processes remaining
* in the root cgroup into that scope. */
- r = cg_migrate(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, SYSTEMD_CGROUP_CONTROLLER, scope_path, false);
+ r = cg_migrate(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, SYSTEMD_CGROUP_CONTROLLER, scope_path, 0);
if (r < 0)
log_warning_errno(r, "Couldn't move remaining userspace processes, ignoring: %m");
return log_error_errno(errno, "Failed to open pin file: %m");
/* 6. Always enable hierarchical support if it exists... */
- if (!unified)
+ if (!cg_all_unified())
(void) cg_set_attribute("memory", "/", "memory.use_hierarchy", "1");
}
return manager_get_unit_by_pid_cgroup(m, pid);
}
+#endif // 0
+#if 0 /// elogind must substitute this with its own variant
int manager_notify_cgroup_empty(Manager *m, const char *cgroup) {
Unit *u;
return unit_notify_cgroup_empty(u);
}
+#else
+int manager_notify_cgroup_empty(Manager *m, const char *cgroup) {
+ Session *s;
+ assert(m);
+ assert(cgroup);
+
+ log_debug("Got cgroup empty notification for: %s", cgroup);
+
+ s = hashmap_get(m->sessions, cgroup);
+
+ if (s) {
+ session_finalize(s);
+ session_free(s);
+ } else
+ log_warning("Session not found: %s", cgroup);
+
+ return 0;
+}
+#endif // 0
+#if 0 /// UNNEEDED by elogind
int unit_get_memory_current(Unit *u, uint64_t *ret) {
_cleanup_free_ char *v = NULL;
int r;
if ((u->cgroup_realized_mask & CGROUP_MASK_MEMORY) == 0)
return -ENODATA;
- if (cg_unified() <= 0)
+ if (!cg_all_unified())
r = cg_get_attribute("memory", u->cgroup_path, "memory.usage_in_bytes", &v);
else
r = cg_get_attribute("memory", u->cgroup_path, "memory.current", &v);
if (!u->cgroup_path)
return -ENODATA;
- if ((u->cgroup_realized_mask & CGROUP_MASK_CPUACCT) == 0)
- return -ENODATA;
+ if (cg_all_unified()) {
+ const char *keys[] = { "usage_usec", NULL };
+ _cleanup_free_ char *val = NULL;
+ uint64_t us;
- r = cg_get_attribute("cpuacct", u->cgroup_path, "cpuacct.usage", &v);
- if (r == -ENOENT)
- return -ENODATA;
- if (r < 0)
- return r;
+ if ((u->cgroup_realized_mask & CGROUP_MASK_CPU) == 0)
+ return -ENODATA;
- r = safe_atou64(v, &ns);
- if (r < 0)
- return r;
+ r = cg_get_keyed_attribute("cpu", u->cgroup_path, "cpu.stat", keys, &val);
+ if (r < 0)
+ return r;
+
+ r = safe_atou64(val, &us);
+ if (r < 0)
+ return r;
+
+ ns = us * NSEC_PER_USEC;
+ } else {
+ if ((u->cgroup_realized_mask & CGROUP_MASK_CPUACCT) == 0)
+ return -ENODATA;
+
+ r = cg_get_attribute("cpuacct", u->cgroup_path, "cpuacct.usage", &v);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+
+ r = safe_atou64(v, &ns);
+ if (r < 0)
+ return r;
+ }
*ret = ns;
return 0;
nsec_t ns;
int r;
+ assert(u);
+
+ /* Retrieve the current CPU usage counter. This will subtract the CPU counter taken when the unit was
+ * started. If the cgroup has been removed already, returns the last cached value. To cache the value, simply
+ * call this function with a NULL return value. */
+
r = unit_get_cpu_usage_raw(u, &ns);
+ if (r == -ENODATA && u->cpu_usage_last != NSEC_INFINITY) {
+ /* If we can't get the CPU usage anymore (because the cgroup was already removed, for example), use our
+ * cached value. */
+
+ if (ret)
+ *ret = u->cpu_usage_last;
+ return 0;
+ }
if (r < 0)
return r;
- if (ns > u->cpuacct_usage_base)
- ns -= u->cpuacct_usage_base;
+ if (ns > u->cpu_usage_base)
+ ns -= u->cpu_usage_base;
else
ns = 0;
- *ret = ns;
+ u->cpu_usage_last = ns;
+ if (ret)
+ *ret = ns;
+
return 0;
}
assert(u);
+ u->cpu_usage_last = NSEC_INFINITY;
+
r = unit_get_cpu_usage_raw(u, &ns);
if (r < 0) {
- u->cpuacct_usage_base = 0;
+ u->cpu_usage_base = 0;
return r;
}
- u->cpuacct_usage_base = ns;
+ u->cpu_usage_base = ns;
return 0;
}
~ianmdlvl / elogind.git / blobdiff