-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
//#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)
-// UNNEEDED by elogind
-#if 0
+#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_limit = (uint64_t) -1;
+ 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;
+
+ c->io_weight = CGROUP_WEIGHT_INVALID;
+ c->startup_io_weight = CGROUP_WEIGHT_INVALID;
c->blockio_weight = CGROUP_BLKIO_WEIGHT_INVALID;
c->startup_blockio_weight = CGROUP_BLKIO_WEIGHT_INVALID;
c->tasks_max = (uint64_t) -1;
-
- c->netclass_type = CGROUP_NETCLASS_TYPE_NONE;
}
void cgroup_context_free_device_allow(CGroupContext *c, CGroupDeviceAllow *a) {
free(a);
}
+void cgroup_context_free_io_device_weight(CGroupContext *c, CGroupIODeviceWeight *w) {
+ assert(c);
+ assert(w);
+
+ LIST_REMOVE(device_weights, c->io_device_weights, w);
+ free(w->path);
+ free(w);
+}
+
+void cgroup_context_free_io_device_limit(CGroupContext *c, CGroupIODeviceLimit *l) {
+ assert(c);
+ assert(l);
+
+ LIST_REMOVE(device_limits, c->io_device_limits, l);
+ free(l->path);
+ free(l);
+}
+
void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w) {
assert(c);
assert(w);
void cgroup_context_done(CGroupContext *c) {
assert(c);
+ while (c->io_device_weights)
+ cgroup_context_free_io_device_weight(c, c->io_device_weights);
+
+ while (c->io_device_limits)
+ cgroup_context_free_io_device_limit(c, c->io_device_limits);
+
while (c->blockio_device_weights)
cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
}
void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
+ CGroupIODeviceLimit *il;
+ CGroupIODeviceWeight *iw;
CGroupBlockIODeviceBandwidth *b;
CGroupBlockIODeviceWeight *w;
CGroupDeviceAllow *a;
fprintf(f,
"%sCPUAccounting=%s\n"
+ "%sIOAccounting=%s\n"
"%sBlockIOAccounting=%s\n"
"%sMemoryAccounting=%s\n"
"%sTasksAccounting=%s\n"
+ "%sCPUWeight=%" PRIu64 "\n"
+ "%sStartupCPUWeight=%" PRIu64 "\n"
"%sCPUShares=%" PRIu64 "\n"
"%sStartupCPUShares=%" PRIu64 "\n"
"%sCPUQuotaPerSecSec=%s\n"
+ "%sIOWeight=%" PRIu64 "\n"
+ "%sStartupIOWeight=%" PRIu64 "\n"
"%sBlockIOWeight=%" PRIu64 "\n"
"%sStartupBlockIOWeight=%" PRIu64 "\n"
+ "%sMemoryLow=%" PRIu64 "\n"
+ "%sMemoryHigh=%" PRIu64 "\n"
+ "%sMemoryMax=%" PRIu64 "\n"
+ "%sMemorySwapMax=%" PRIu64 "\n"
"%sMemoryLimit=%" PRIu64 "\n"
"%sTasksMax=%" PRIu64 "\n"
"%sDevicePolicy=%s\n"
"%sDelegate=%s\n",
prefix, yes_no(c->cpu_accounting),
+ prefix, yes_no(c->io_accounting),
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->io_weight,
+ prefix, c->startup_io_weight,
prefix, c->blockio_weight,
prefix, c->startup_blockio_weight,
+ 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),
a->path,
a->r ? "r" : "", a->w ? "w" : "", a->m ? "m" : "");
+ LIST_FOREACH(device_weights, iw, c->io_device_weights)
+ fprintf(f,
+ "%sIODeviceWeight=%s %" PRIu64,
+ prefix,
+ iw->path,
+ iw->weight);
+
+ LIST_FOREACH(device_limits, il, c->io_device_limits) {
+ char buf[FORMAT_BYTES_MAX];
+ CGroupIOLimitType type;
+
+ for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++)
+ if (il->limits[type] != cgroup_io_limit_defaults[type])
+ fprintf(f,
+ "%s%s=%s %s\n",
+ prefix,
+ cgroup_io_limit_type_to_string(type),
+ il->path,
+ format_bytes(buf, sizeof(buf), il->limits[type]));
+ }
+
LIST_FOREACH(device_weights, w, c->blockio_device_weights)
fprintf(f,
"%sBlockIODeviceWeight=%s %" PRIu64,
LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
char buf[FORMAT_BYTES_MAX];
- fprintf(f,
- "%s%s=%s %s\n",
- prefix,
- b->read ? "BlockIOReadBandwidth" : "BlockIOWriteBandwidth",
- b->path,
- format_bytes(buf, sizeof(buf), b->bandwidth));
+ if (b->rbps != CGROUP_LIMIT_MAX)
+ fprintf(f,
+ "%sBlockIOReadBandwidth=%s %s\n",
+ prefix,
+ b->path,
+ format_bytes(buf, sizeof(buf), b->rbps));
+ if (b->wbps != CGROUP_LIMIT_MAX)
+ fprintf(f,
+ "%sBlockIOWriteBandwidth=%s %s\n",
+ prefix,
+ b->path,
+ format_bytes(buf, sizeof(buf), b->wbps));
}
}
-static int lookup_blkio_device(const char *p, dev_t *dev) {
+static int lookup_block_device(const char *p, dev_t *dev) {
struct stat st;
int r;
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;
}
-void cgroup_context_apply(CGroupContext *c, CGroupMask mask, const char *path, uint32_t netclass, ManagerState state) {
+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 ||
+ c->startup_io_weight != CGROUP_WEIGHT_INVALID ||
+ c->io_device_weights ||
+ c->io_device_limits;
+}
+
+static bool cgroup_context_has_blockio_config(CGroupContext *c) {
+ return c->blockio_accounting ||
+ c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ||
+ c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ||
+ c->blockio_device_weights ||
+ c->blockio_device_bandwidths;
+}
+
+static uint64_t cgroup_context_io_weight(CGroupContext *c, ManagerState state) {
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_io_weight != CGROUP_WEIGHT_INVALID)
+ return c->startup_io_weight;
+ else if (c->io_weight != CGROUP_WEIGHT_INVALID)
+ return c->io_weight;
+ else
+ return CGROUP_WEIGHT_DEFAULT;
+}
+
+static uint64_t cgroup_context_blkio_weight(CGroupContext *c, ManagerState state) {
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID)
+ return c->startup_blockio_weight;
+ else if (c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID)
+ return c->blockio_weight;
+ else
+ return CGROUP_BLKIO_WEIGHT_DEFAULT;
+}
+
+static uint64_t cgroup_weight_blkio_to_io(uint64_t blkio_weight) {
+ return CLAMP(blkio_weight * CGROUP_WEIGHT_DEFAULT / CGROUP_BLKIO_WEIGHT_DEFAULT,
+ CGROUP_WEIGHT_MIN, CGROUP_WEIGHT_MAX);
+}
+
+static uint64_t cgroup_weight_io_to_blkio(uint64_t io_weight) {
+ return CLAMP(io_weight * CGROUP_BLKIO_WEIGHT_DEFAULT / CGROUP_WEIGHT_DEFAULT,
+ CGROUP_BLKIO_WEIGHT_MIN, CGROUP_BLKIO_WEIGHT_MAX);
+}
+
+static void cgroup_apply_io_device_weight(Unit *u, const char *dev_path, uint64_t io_weight) {
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return;
+
+ xsprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), io_weight);
+ r = cg_set_attribute("io", u->cgroup_path, "io.weight", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set io.weight: %m");
+}
+
+static void cgroup_apply_blkio_device_weight(Unit *u, const char *dev_path, uint64_t blkio_weight) {
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return;
+
+ xsprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), blkio_weight);
+ r = cg_set_attribute("blkio", u->cgroup_path, "blkio.weight_device", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.weight_device: %m");
+}
+
+static unsigned cgroup_apply_io_device_limit(Unit *u, const char *dev_path, uint64_t *limits) {
+ char limit_bufs[_CGROUP_IO_LIMIT_TYPE_MAX][DECIMAL_STR_MAX(uint64_t)];
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+(6+DECIMAL_STR_MAX(uint64_t)+1)*4];
+ CGroupIOLimitType type;
+ dev_t dev;
+ unsigned n = 0;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return 0;
+
+ for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++) {
+ if (limits[type] != cgroup_io_limit_defaults[type]) {
+ xsprintf(limit_bufs[type], "%" PRIu64, limits[type]);
+ n++;
+ } else {
+ xsprintf(limit_bufs[type], "%s", limits[type] == CGROUP_LIMIT_MAX ? "max" : "0");
+ }
+ }
+
+ xsprintf(buf, "%u:%u rbps=%s wbps=%s riops=%s wiops=%s\n", major(dev), minor(dev),
+ limit_bufs[CGROUP_IO_RBPS_MAX], limit_bufs[CGROUP_IO_WBPS_MAX],
+ limit_bufs[CGROUP_IO_RIOPS_MAX], limit_bufs[CGROUP_IO_WIOPS_MAX]);
+ r = cg_set_attribute("io", u->cgroup_path, "io.max", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set io.max: %m");
+ return n;
+}
+
+static unsigned cgroup_apply_blkio_device_limit(Unit *u, const char *dev_path, uint64_t rbps, uint64_t wbps) {
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ unsigned n = 0;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return 0;
+
+ if (rbps != CGROUP_LIMIT_MAX)
+ n++;
+ sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), rbps);
+ r = cg_set_attribute("blkio", u->cgroup_path, "blkio.throttle.read_bps_device", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.throttle.read_bps_device: %m");
+
+ if (wbps != CGROUP_LIMIT_MAX)
+ n++;
+ sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), wbps);
+ r = cg_set_attribute("blkio", u->cgroup_path, "blkio.throttle.write_bps_device", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.throttle.write_bps_device: %m");
+
+ return n;
+}
+
+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 || c->memory_swap_max != CGROUP_LIMIT_MAX;
+}
+
+static void cgroup_apply_unified_memory_limit(Unit *u, const char *file, uint64_t v) {
+ char buf[DECIMAL_STR_MAX(uint64_t) + 1] = "max";
+ int r;
+
+ if (v != CGROUP_LIMIT_MAX)
+ xsprintf(buf, "%" PRIu64 "\n", v);
+
+ r = cg_set_attribute("memory", u->cgroup_path, file, buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set %s: %m", file);
+}
+
+static void cgroup_context_apply(Unit *u, CGroupMask mask, ManagerState state) {
+ const char *path;
+ CGroupContext *c;
bool is_root;
int r;
+ assert(u);
+
+ c = unit_get_cgroup_context(u);
+ path = u->cgroup_path;
+
assert(c);
assert(path);
* 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_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.shares on %s: %m", path);
+ 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_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.cfs_period_us on %s: %m", path);
+ 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_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set cpu.cfs_quota_us on %s: %m", path);
+ 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) {
+ bool has_io = cgroup_context_has_io_config(c);
+ bool has_blockio = cgroup_context_has_blockio_config(c);
+
+ if (!is_root) {
+ char buf[8+DECIMAL_STR_MAX(uint64_t)+1];
+ uint64_t weight;
+
+ if (has_io)
+ weight = cgroup_context_io_weight(c, state);
+ 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);
+ r = cg_set_attribute("io", path, "io.weight", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set io.weight: %m");
+
+ if (has_io) {
+ CGroupIODeviceWeight *w;
+
+ /* FIXME: no way to reset this list */
+ LIST_FOREACH(device_weights, w, c->io_device_weights)
+ cgroup_apply_io_device_weight(u, w->path, w->weight);
+ } else if (has_blockio) {
+ CGroupBlockIODeviceWeight *w;
+
+ /* FIXME: no way to reset this list */
+ 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);
+ }
+ }
+ }
+
+ /* Apply limits and free ones without config. */
+ if (has_io) {
+ CGroupIODeviceLimit *l, *next;
+
+ LIST_FOREACH_SAFE(device_limits, l, next, c->io_device_limits) {
+ if (!cgroup_apply_io_device_limit(u, l->path, l->limits))
+ 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) {
+ uint64_t limits[_CGROUP_IO_LIMIT_TYPE_MAX];
+ CGroupIOLimitType type;
+
+ for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++)
+ limits[type] = cgroup_io_limit_defaults[type];
+
+ 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);
+ }
+ }
}
if (mask & CGROUP_MASK_BLKIO) {
- char buf[MAX(DECIMAL_STR_MAX(uint64_t)+1,
- DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1)];
- CGroupBlockIODeviceWeight *w;
- CGroupBlockIODeviceBandwidth *b;
+ bool has_io = cgroup_context_has_io_config(c);
+ bool has_blockio = cgroup_context_has_blockio_config(c);
if (!is_root) {
- sprintf(buf, "%" PRIu64 "\n",
- IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) && c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ? c->startup_blockio_weight :
- c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ? c->blockio_weight : CGROUP_BLKIO_WEIGHT_DEFAULT);
+ char buf[DECIMAL_STR_MAX(uint64_t)+1];
+ uint64_t weight;
+
+ 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;
+
+ xsprintf(buf, "%" PRIu64 "\n", weight);
r = cg_set_attribute("blkio", path, "blkio.weight", buf);
if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set blkio.weight on %s: %m", path);
-
- /* FIXME: no way to reset this list */
- LIST_FOREACH(device_weights, w, c->blockio_device_weights) {
- dev_t dev;
-
- r = lookup_blkio_device(w->path, &dev);
- if (r < 0)
- continue;
-
- sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), w->weight);
- r = cg_set_attribute("blkio", path, "blkio.weight_device", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set blkio.weight_device on %s: %m", path);
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.weight: %m");
+
+ 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);
}
}
- /* FIXME: no way to reset this list */
- LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
- const char *a;
- dev_t dev;
+ /* Apply limits and free ones without config. */
+ if (has_io) {
+ CGroupIODeviceLimit *l, *next;
- r = lookup_blkio_device(b->path, &dev);
- if (r < 0)
- continue;
+ 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);
- a = b->read ? "blkio.throttle.read_bps_device" : "blkio.throttle.write_bps_device";
+ 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;
- sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), b->bandwidth);
- r = cg_set_attribute("blkio", path, a, buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set %s on %s: %m", a, path);
+ 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 (c->memory_limit != (uint64_t) -1) {
+ if (cg_all_unified()) {
+ uint64_t max;
+ uint64_t swap_max = CGROUP_LIMIT_MAX;
+
+ if (cgroup_context_has_unified_memory_config(c)) {
+ max = c->memory_max;
+ 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;
- sprintf(buf, "%" PRIu64 "\n", c->memory_limit);
+ 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 (cg_unified() <= 0)
- r = cg_set_attribute("memory", path, "memory.limit_in_bytes", buf);
+ if (val == CGROUP_LIMIT_MAX)
+ strncpy(buf, "-1\n", sizeof(buf));
else
- r = cg_set_attribute("memory", path, "memory.max", buf);
+ xsprintf(buf, "%" PRIu64 "\n", val);
- } else {
- if (cg_unified() <= 0)
- r = cg_set_attribute("memory", path, "memory.limit_in_bytes", "-1");
- else
- r = cg_set_attribute("memory", path, "memory.max", "max");
+ r = cg_set_attribute("memory", path, "memory.limit_in_bytes", buf);
+ if (r < 0)
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set memory.limit_in_bytes: %m");
}
-
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set memory.limit_in_bytes/memory.max on %s: %m", path);
}
if ((mask & CGROUP_MASK_DEVICES) && !is_root) {
else
r = cg_set_attribute("devices", path, "devices.allow", "a");
if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EINVAL, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to reset devices.list on %s: %m", path);
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EINVAL, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to reset devices.list: %m");
if (c->device_policy == CGROUP_CLOSED ||
(c->device_policy == CGROUP_AUTO && c->device_allow)) {
"/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_debug("Ignoring device %s while writing cgroup attribute.", a->path);
+ 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);
r = cg_set_attribute("pids", path, "pids.max", "max");
if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set pids.max on %s: %m", path);
- }
-
- if (mask & CGROUP_MASK_NET_CLS) {
- char buf[DECIMAL_STR_MAX(uint32_t)];
-
- sprintf(buf, "%" PRIu32, netclass);
-
- r = cg_set_attribute("net_cls", path, "net_cls.classid", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set net_cls.classid on %s: %m", path);
+ log_unit_full(u, IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set pids.max: %m");
}
}
/* 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;
- if (c->blockio_accounting ||
- c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ||
- c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ||
- c->blockio_device_weights ||
- c->blockio_device_bandwidths)
- mask |= CGROUP_MASK_BLKIO;
+ if (cgroup_context_has_io_config(c) || cgroup_context_has_blockio_config(c))
+ mask |= CGROUP_MASK_IO | CGROUP_MASK_BLKIO;
if (c->memory_accounting ||
- c->memory_limit != (uint64_t) -1)
+ c->memory_limit != CGROUP_LIMIT_MAX ||
+ cgroup_context_has_unified_memory_config(c))
mask |= CGROUP_MASK_MEMORY;
if (c->device_allow ||
c->tasks_max != (uint64_t) -1)
mask |= CGROUP_MASK_PIDS;
- if (c->netclass_type != CGROUP_NETCLASS_TYPE_NONE)
- mask |= CGROUP_MASK_NET_CLS;
-
return mask;
}
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) {
}
int unit_watch_cgroup(Unit *u) {
- _cleanup_free_ char *populated = NULL;
+ _cleanup_free_ char *events = NULL;
int r;
assert(u);
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. */
if (r < 0)
return log_oom();
- r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, "cgroup.populated", &populated);
+ r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, "cgroup.events", &events);
if (r < 0)
return log_oom();
- u->cgroup_inotify_wd = inotify_add_watch(u->manager->cgroup_inotify_fd, populated, IN_MODIFY);
+ u->cgroup_inotify_wd = inotify_add_watch(u->manager->cgroup_inotify_fd, events, IN_MODIFY);
if (u->cgroup_inotify_wd < 0) {
if (errno == ENOENT) /* If the directory is already
/* Keep track that this is now realized */
u->cgroup_realized = true;
u->cgroup_realized_mask = target_mask;
+ u->cgroup_enabled_mask = enable_mask;
if (u->type != UNIT_SLICE && !c->delegate) {
return 0;
}
-static bool unit_has_mask_realized(Unit *u, CGroupMask target_mask) {
- assert(u);
-
- return u->cgroup_realized && u->cgroup_realized_mask == target_mask;
-}
-
-static int unit_find_free_netclass_cgroup(Unit *u, uint32_t *ret) {
-
- uint32_t start, i;
- Manager *m;
-
- assert(u);
-
- m = u->manager;
-
- i = start = m->cgroup_netclass_registry_last;
-
- do {
- i++;
-
- if (!hashmap_get(m->cgroup_netclass_registry, UINT_TO_PTR(i))) {
- m->cgroup_netclass_registry_last = i;
- *ret = i;
- return 0;
- }
-
- if (i == UINT32_MAX)
- i = CGROUP_NETCLASS_FIXED_MAX;
-
- } while (i != start);
-
- return -ENOBUFS;
-}
-
-int unit_add_to_netclass_cgroup(Unit *u) {
-
- CGroupContext *cc;
- Unit *first;
- void *key;
+static void cgroup_xattr_apply(Unit *u) {
+ char ids[SD_ID128_STRING_MAX];
int r;
assert(u);
- cc = unit_get_cgroup_context(u);
- if (!cc)
- return 0;
-
- switch (cc->netclass_type) {
- case CGROUP_NETCLASS_TYPE_NONE:
- return 0;
-
- case CGROUP_NETCLASS_TYPE_FIXED:
- u->cgroup_netclass_id = cc->netclass_id;
- break;
-
- case CGROUP_NETCLASS_TYPE_AUTO:
- /* Allocate a new ID in case it was requested and not done yet */
- if (u->cgroup_netclass_id == 0) {
- r = unit_find_free_netclass_cgroup(u, &u->cgroup_netclass_id);
- if (r < 0)
- return r;
-
- log_debug("Dynamically assigned netclass cgroup id %" PRIu32 " to %s", u->cgroup_netclass_id, u->id);
- }
+ if (!MANAGER_IS_SYSTEM(u->manager))
+ return;
- break;
- }
+ if (sd_id128_is_null(u->invocation_id))
+ return;
- r = hashmap_ensure_allocated(&u->manager->cgroup_netclass_registry, &trivial_hash_ops);
+ 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)
- return r;
-
- key = UINT32_TO_PTR(u->cgroup_netclass_id);
- first = hashmap_get(u->manager->cgroup_netclass_registry, key);
-
- if (first) {
- LIST_PREPEND(cgroup_netclass, first, u);
- return hashmap_replace(u->manager->cgroup_netclass_registry, key, u);
- }
-
- return hashmap_put(u->manager->cgroup_netclass_registry, key, u);
+ log_unit_warning_errno(u, r, "Failed to set invocation ID on control group %s, ignoring: %m", u->cgroup_path);
}
-int unit_remove_from_netclass_cgroup(Unit *u) {
-
- Unit *head;
- void *key;
-
+static bool unit_has_mask_realized(Unit *u, CGroupMask target_mask, CGroupMask enable_mask) {
assert(u);
- key = UINT32_TO_PTR(u->cgroup_netclass_id);
-
- LIST_FIND_HEAD(cgroup_netclass, u, head);
- LIST_REMOVE(cgroup_netclass, head, u);
-
- if (head)
- return hashmap_replace(u->manager->cgroup_netclass_registry, key, head);
-
- hashmap_remove(u->manager->cgroup_netclass_registry, key);
-
- return 0;
+ return u->cgroup_realized && u->cgroup_realized_mask == target_mask && u->cgroup_enabled_mask == enable_mask;
}
/* Check if necessary controllers and attributes for a unit are in place.
}
target_mask = unit_get_target_mask(u);
- if (unit_has_mask_realized(u, target_mask))
+ enable_mask = unit_get_enable_mask(u);
+
+ if (unit_has_mask_realized(u, target_mask, enable_mask))
return 0;
/* First, realize parents */
}
/* And then do the real work */
- enable_mask = unit_get_enable_mask(u);
r = unit_create_cgroup(u, target_mask, enable_mask);
if (r < 0)
return r;
/* Finally, apply the necessary attributes. */
- cgroup_context_apply(unit_get_cgroup_context(u), target_mask, u->cgroup_path, u->cgroup_netclass_id, state);
+ cgroup_context_apply(u, target_mask, state);
+ cgroup_xattr_apply(u);
return 0;
}
/* If the unit doesn't need any new controllers
* and has current ones realized, it doesn't need
* any changes. */
- if (unit_has_mask_realized(m, unit_get_target_mask(m)))
+ if (unit_has_mask_realized(m, unit_get_target_mask(m), unit_get_enable_mask(m)))
continue;
unit_add_to_cgroup_queue(m);
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);
if (r < 0) {
- log_debug_errno(r, "Failed to destroy cgroup %s, ignoring: %m", u->cgroup_path);
+ log_unit_debug_errno(u, r, "Failed to destroy cgroup %s, ignoring: %m", u->cgroup_path);
return;
}
u->cgroup_realized = false;
u->cgroup_realized_mask = 0;
+ u->cgroup_enabled_mask = 0;
}
int unit_search_main_pid(Unit *u, pid_t *ret) {
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 determine cgroup we are running in: %m");
-/// elogind does not support systemd scopes and slices
-#if 0
+#if 0 /// elogind does not support systemd scopes and slices
/* Chop off the init scope, if we are already located in it */
e = endswith(m->cgroup_root, "/" SPECIAL_INIT_SCOPE);
* it. This is to support live upgrades from older systemd
* versions where PID 1 was moved there. Also see
* cg_get_root_path(). */
- if (!e && m->running_as == MANAGER_SYSTEM) {
+ if (!e && MANAGER_IS_SYSTEM(m)) {
e = endswith(m->cgroup_root, "/" SPECIAL_SYSTEM_SLICE);
if (!e)
e = endswith(m->cgroup_root, "/system"); /* even more legacy */
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. */
-/// elogind does not support the unified hierarchy, yet.
-#if 0
+#if 0 /// elogind does not support the unified hierarchy, yet.
m->cgroup_inotify_event_source = sd_event_source_unref(m->cgroup_inotify_event_source);
safe_close(m->cgroup_inotify_fd);
if (r < 0)
return log_error_errno(r, "Failed to watch control group inotify object: %m");
- r = sd_event_source_set_priority(m->cgroup_inotify_event_source, SD_EVENT_PRIORITY_IDLE - 5);
+ /* Process cgroup empty notifications early, but after service notifications and SIGCHLD. Also
+ * see handling of cgroup agent notifications, for the classic cgroup hierarchy support. */
+ r = sd_event_source_set_priority(m->cgroup_inotify_event_source, SD_EVENT_PRIORITY_NORMAL-5);
if (r < 0)
return log_error_errno(r, "Failed to set priority of inotify event source: %m");
#else
return log_error_errno(EOPNOTSUPP, "Unified cgroup hierarchy not supported: %m");
#endif // 0
- } else if (m->running_as == MANAGER_SYSTEM) {
+ } else if (MANAGER_IS_SYSTEM(m)) {
/* On the legacy hierarchy we only get
* notifications via cgroup agents. (Which
* generate events when control groups with
* children run empty. */
- r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, ELOGIND_CGROUP_AGENT_PATH);
+ r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH);
if (r < 0)
log_warning_errno(r, "Failed to install release agent, ignoring: %m");
else if (r > 0)
log_debug("Release agent already installed.");
}
-/// elogind is not meant to run in systemd init scope
-#if 0
+#if 0 /// elogind is not meant to run in systemd init scope
/* 4. Make sure we are in the special "init.scope" unit in the root slice. */
scope_path = strjoina(m->cgroup_root, "/" SPECIAL_INIT_SCOPE);
r = cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, scope_path, 0);
/* also, move all other userspace processes remaining
* in the root cgroup into that scope. */
- if (!streq(m->cgroup_root, scope_path)) {
- r = cg_migrate(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, SYSTEMD_CGROUP_CONTROLLER, scope_path, false);
- if (r < 0)
- log_warning_errno(r, "Couldn't move remaining userspace processes, ignoring: %m");
- }
+ 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");
/* 5. And pin it, so that it cannot be unmounted */
safe_close(m->pin_cgroupfs_fd);
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 log_error_errno(r, "Failed to determine supported controllers: %m");
for (c = 0; c < _CGROUP_CONTROLLER_MAX; c++)
- log_debug("Controller '%s' supported: %s", cgroup_controller_to_string(c), yes_no(m->cgroup_supported & c));
+ log_debug("Controller '%s' supported: %s", cgroup_controller_to_string(c), yes_no(m->cgroup_supported & CGROUP_CONTROLLER_TO_MASK(c)));
return 0;
}
if (delete && m->cgroup_root)
(void) cg_trim(SYSTEMD_CGROUP_CONTROLLER, m->cgroup_root, false);
-/// elogind does not support the unified hierarchy, yet.
-#if 0
+#if 0 /// elogind does not support the unified hierarchy, yet.
m->cgroup_inotify_wd_unit = hashmap_free(m->cgroup_inotify_wd_unit);
m->cgroup_inotify_event_source = sd_event_source_unref(m->cgroup_inotify_event_source);
m->cgroup_root = mfree(m->cgroup_root);
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
Unit* manager_get_unit_by_cgroup(Manager *m, const char *cgroup) {
char *p;
Unit *u;
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;
assert(m);
assert(cgroup);
+ log_debug("Got cgroup empty notification for: %s", cgroup);
+
u = manager_get_unit_by_cgroup(m, cgroup);
if (!u)
return 0;
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;
}
if (m == 0)
return;
+ /* always invalidate compat pairs together */
+ if (m & (CGROUP_MASK_IO | CGROUP_MASK_BLKIO))
+ m |= CGROUP_MASK_IO | CGROUP_MASK_BLKIO;
+
if ((u->cgroup_realized_mask & m) == 0)
return;
assert(m);
SET_FOREACH(u, m->startup_units, i)
- unit_invalidate_cgroup(u, CGROUP_MASK_CPU|CGROUP_MASK_BLKIO);
+ unit_invalidate_cgroup(u, CGROUP_MASK_CPU|CGROUP_MASK_IO|CGROUP_MASK_BLKIO);
}
static const char* const cgroup_device_policy_table[_CGROUP_DEVICE_POLICY_MAX] = {
~ianmdlvl / elogind.git / blobdiff