/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
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 .
***/
#include
#include "af-list.h"
#include "alloc-util.h"
#include "bpf-firewall.h"
#include "bus-util.h"
#include "cgroup-util.h"
#include "cgroup.h"
#include "dbus-cgroup.h"
#include "fd-util.h"
#include "fileio.h"
#include "path-util.h"
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_cgroup_device_policy, cgroup_device_policy, CGroupDevicePolicy);
static int property_get_io_device_weight(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
CGroupContext *c = userdata;
CGroupIODeviceWeight *w;
int r;
assert(bus);
assert(reply);
assert(c);
r = sd_bus_message_open_container(reply, 'a', "(st)");
if (r < 0)
return r;
LIST_FOREACH(device_weights, w, c->io_device_weights) {
r = sd_bus_message_append(reply, "(st)", w->path, w->weight);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_io_device_limits(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
CGroupContext *c = userdata;
CGroupIODeviceLimit *l;
int r;
assert(bus);
assert(reply);
assert(c);
r = sd_bus_message_open_container(reply, 'a', "(st)");
if (r < 0)
return r;
LIST_FOREACH(device_limits, l, c->io_device_limits) {
CGroupIOLimitType type;
type = cgroup_io_limit_type_from_string(property);
if (type < 0 || l->limits[type] == cgroup_io_limit_defaults[type])
continue;
r = sd_bus_message_append(reply, "(st)", l->path, l->limits[type]);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_blockio_device_weight(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
CGroupContext *c = userdata;
CGroupBlockIODeviceWeight *w;
int r;
assert(bus);
assert(reply);
assert(c);
r = sd_bus_message_open_container(reply, 'a', "(st)");
if (r < 0)
return r;
LIST_FOREACH(device_weights, w, c->blockio_device_weights) {
r = sd_bus_message_append(reply, "(st)", w->path, w->weight);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_blockio_device_bandwidths(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
CGroupContext *c = userdata;
CGroupBlockIODeviceBandwidth *b;
int r;
assert(bus);
assert(reply);
assert(c);
r = sd_bus_message_open_container(reply, 'a', "(st)");
if (r < 0)
return r;
LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
uint64_t v;
if (streq(property, "BlockIOReadBandwidth"))
v = b->rbps;
else
v = b->wbps;
if (v == CGROUP_LIMIT_MAX)
continue;
r = sd_bus_message_append(reply, "(st)", b->path, v);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_device_allow(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
CGroupContext *c = userdata;
CGroupDeviceAllow *a;
int r;
assert(bus);
assert(reply);
assert(c);
r = sd_bus_message_open_container(reply, 'a', "(ss)");
if (r < 0)
return r;
LIST_FOREACH(device_allow, a, c->device_allow) {
unsigned k = 0;
char rwm[4];
if (a->r)
rwm[k++] = 'r';
if (a->w)
rwm[k++] = 'w';
if (a->m)
rwm[k++] = 'm';
rwm[k] = 0;
r = sd_bus_message_append(reply, "(ss)", a->path, rwm);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_ip_address_access(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
IPAddressAccessItem** items = userdata, *i;
int r;
r = sd_bus_message_open_container(reply, 'a', "(iayu)");
if (r < 0)
return r;
LIST_FOREACH(items, i, *items) {
r = sd_bus_message_open_container(reply, 'r', "iayu");
if (r < 0)
return r;
r = sd_bus_message_append(reply, "i", i->family);
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', &i->address, FAMILY_ADDRESS_SIZE(i->family));
if (r < 0)
return r;
r = sd_bus_message_append(reply, "u", (uint32_t) i->prefixlen);
if (r < 0)
return r;
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
const sd_bus_vtable bus_cgroup_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Delegate", "b", bus_property_get_bool, offsetof(CGroupContext, delegate), 0),
SD_BUS_PROPERTY("CPUAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, cpu_accounting), 0),
SD_BUS_PROPERTY("CPUWeight", "t", NULL, offsetof(CGroupContext, cpu_weight), 0),
SD_BUS_PROPERTY("StartupCPUWeight", "t", NULL, offsetof(CGroupContext, startup_cpu_weight), 0),
SD_BUS_PROPERTY("CPUShares", "t", NULL, offsetof(CGroupContext, cpu_shares), 0),
SD_BUS_PROPERTY("StartupCPUShares", "t", NULL, offsetof(CGroupContext, startup_cpu_shares), 0),
SD_BUS_PROPERTY("CPUQuotaPerSecUSec", "t", bus_property_get_usec, offsetof(CGroupContext, cpu_quota_per_sec_usec), 0),
SD_BUS_PROPERTY("IOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, io_accounting), 0),
SD_BUS_PROPERTY("IOWeight", "t", NULL, offsetof(CGroupContext, io_weight), 0),
SD_BUS_PROPERTY("StartupIOWeight", "t", NULL, offsetof(CGroupContext, startup_io_weight), 0),
SD_BUS_PROPERTY("IODeviceWeight", "a(st)", property_get_io_device_weight, 0, 0),
SD_BUS_PROPERTY("IOReadBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
SD_BUS_PROPERTY("IOWriteBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
SD_BUS_PROPERTY("IOReadIOPSMax", "a(st)", property_get_io_device_limits, 0, 0),
SD_BUS_PROPERTY("IOWriteIOPSMax", "a(st)", property_get_io_device_limits, 0, 0),
SD_BUS_PROPERTY("BlockIOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, blockio_accounting), 0),
SD_BUS_PROPERTY("BlockIOWeight", "t", NULL, offsetof(CGroupContext, blockio_weight), 0),
SD_BUS_PROPERTY("StartupBlockIOWeight", "t", NULL, offsetof(CGroupContext, startup_blockio_weight), 0),
SD_BUS_PROPERTY("BlockIODeviceWeight", "a(st)", property_get_blockio_device_weight, 0, 0),
SD_BUS_PROPERTY("BlockIOReadBandwidth", "a(st)", property_get_blockio_device_bandwidths, 0, 0),
SD_BUS_PROPERTY("BlockIOWriteBandwidth", "a(st)", property_get_blockio_device_bandwidths, 0, 0),
SD_BUS_PROPERTY("MemoryAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, memory_accounting), 0),
SD_BUS_PROPERTY("MemoryLow", "t", NULL, offsetof(CGroupContext, memory_low), 0),
SD_BUS_PROPERTY("MemoryHigh", "t", NULL, offsetof(CGroupContext, memory_high), 0),
SD_BUS_PROPERTY("MemoryMax", "t", NULL, offsetof(CGroupContext, memory_max), 0),
SD_BUS_PROPERTY("MemorySwapMax", "t", NULL, offsetof(CGroupContext, memory_swap_max), 0),
SD_BUS_PROPERTY("MemoryLimit", "t", NULL, offsetof(CGroupContext, memory_limit), 0),
SD_BUS_PROPERTY("DevicePolicy", "s", property_get_cgroup_device_policy, offsetof(CGroupContext, device_policy), 0),
SD_BUS_PROPERTY("DeviceAllow", "a(ss)", property_get_device_allow, 0, 0),
SD_BUS_PROPERTY("TasksAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, tasks_accounting), 0),
SD_BUS_PROPERTY("TasksMax", "t", NULL, offsetof(CGroupContext, tasks_max), 0),
SD_BUS_PROPERTY("IPAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, ip_accounting), 0),
SD_BUS_PROPERTY("IPAddressAllow", "a(iayu)", property_get_ip_address_access, offsetof(CGroupContext, ip_address_allow), 0),
SD_BUS_PROPERTY("IPAddressDeny", "a(iayu)", property_get_ip_address_access, offsetof(CGroupContext, ip_address_deny), 0),
SD_BUS_VTABLE_END
};
static int bus_cgroup_set_transient_property(
Unit *u,
CGroupContext *c,
const char *name,
sd_bus_message *message,
UnitSetPropertiesMode mode,
sd_bus_error *error) {
int r;
assert(u);
assert(c);
assert(name);
assert(message);
if (streq(name, "Delegate")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->delegate = b;
unit_write_drop_in_private(u, mode, name, b ? "Delegate=yes" : "Delegate=no");
}
return 1;
}
return 0;
}
int bus_cgroup_set_property(
Unit *u,
CGroupContext *c,
const char *name,
sd_bus_message *message,
UnitSetPropertiesMode mode,
sd_bus_error *error) {
CGroupIOLimitType iol_type;
int r;
assert(u);
assert(c);
assert(name);
assert(message);
if (streq(name, "CPUAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->cpu_accounting = b;
unit_invalidate_cgroup(u, CGROUP_MASK_CPUACCT|CGROUP_MASK_CPU);
unit_write_drop_in_private(u, mode, name, b ? "CPUAccounting=yes" : "CPUAccounting=no");
}
return 1;
} else if (streq(name, "CPUWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (!CGROUP_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "CPUWeight value out of range");
if (mode != UNIT_CHECK) {
c->cpu_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
if (weight == CGROUP_WEIGHT_INVALID)
unit_write_drop_in_private(u, mode, name, "CPUWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "CPUWeight=%" PRIu64, weight);
}
return 1;
} else if (streq(name, "StartupCPUWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (!CGROUP_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "StartupCPUWeight value out of range");
if (mode != UNIT_CHECK) {
c->startup_cpu_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
if (weight == CGROUP_CPU_SHARES_INVALID)
unit_write_drop_in_private(u, mode, name, "StartupCPUWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "StartupCPUWeight=%" PRIu64, weight);
}
return 1;
} else if (streq(name, "CPUShares")) {
uint64_t shares;
r = sd_bus_message_read(message, "t", &shares);
if (r < 0)
return r;
if (!CGROUP_CPU_SHARES_IS_OK(shares))
return sd_bus_error_set_errnof(error, EINVAL, "CPUShares value out of range");
if (mode != UNIT_CHECK) {
c->cpu_shares = shares;
unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
if (shares == CGROUP_CPU_SHARES_INVALID)
unit_write_drop_in_private(u, mode, name, "CPUShares=");
else
unit_write_drop_in_private_format(u, mode, name, "CPUShares=%" PRIu64, shares);
}
return 1;
} else if (streq(name, "StartupCPUShares")) {
uint64_t shares;
r = sd_bus_message_read(message, "t", &shares);
if (r < 0)
return r;
if (!CGROUP_CPU_SHARES_IS_OK(shares))
return sd_bus_error_set_errnof(error, EINVAL, "StartupCPUShares value out of range");
if (mode != UNIT_CHECK) {
c->startup_cpu_shares = shares;
unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
if (shares == CGROUP_CPU_SHARES_INVALID)
unit_write_drop_in_private(u, mode, name, "StartupCPUShares=");
else
unit_write_drop_in_private_format(u, mode, name, "StartupCPUShares=%" PRIu64, shares);
}
return 1;
} else if (streq(name, "CPUQuotaPerSecUSec")) {
uint64_t u64;
r = sd_bus_message_read(message, "t", &u64);
if (r < 0)
return r;
if (u64 <= 0)
return sd_bus_error_set_errnof(error, EINVAL, "CPUQuotaPerSecUSec value out of range");
if (mode != UNIT_CHECK) {
c->cpu_quota_per_sec_usec = u64;
unit_invalidate_cgroup(u, CGROUP_MASK_CPU);
if (c->cpu_quota_per_sec_usec == USEC_INFINITY)
unit_write_drop_in_private_format(u, mode, "CPUQuota",
"CPUQuota=");
else
/* config_parse_cpu_quota() requires an integer, so
* truncating division is used on purpose here. */
unit_write_drop_in_private_format(u, mode, "CPUQuota",
"CPUQuota=%0.f%%",
(double) (c->cpu_quota_per_sec_usec / 10000));
}
return 1;
} else if (streq(name, "IOAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->io_accounting = b;
unit_invalidate_cgroup(u, CGROUP_MASK_IO);
unit_write_drop_in_private(u, mode, name, b ? "IOAccounting=yes" : "IOAccounting=no");
}
return 1;
} else if (streq(name, "IOWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (!CGROUP_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "IOWeight value out of range");
if (mode != UNIT_CHECK) {
c->io_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_IO);
if (weight == CGROUP_WEIGHT_INVALID)
unit_write_drop_in_private(u, mode, name, "IOWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "IOWeight=%" PRIu64, weight);
}
return 1;
} else if (streq(name, "StartupIOWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (CGROUP_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "StartupIOWeight value out of range");
if (mode != UNIT_CHECK) {
c->startup_io_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_IO);
if (weight == CGROUP_WEIGHT_INVALID)
unit_write_drop_in_private(u, mode, name, "StartupIOWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "StartupIOWeight=%" PRIu64, weight);
}
return 1;
} else if ((iol_type = cgroup_io_limit_type_from_string(name)) >= 0) {
const char *path;
unsigned n = 0;
uint64_t u64;
r = sd_bus_message_enter_container(message, 'a', "(st)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(st)", &path, &u64)) > 0) {
if (mode != UNIT_CHECK) {
CGroupIODeviceLimit *a = NULL, *b;
LIST_FOREACH(device_limits, b, c->io_device_limits) {
if (path_equal(path, b->path)) {
a = b;
break;
}
}
if (!a) {
CGroupIOLimitType type;
a = new0(CGroupIODeviceLimit, 1);
if (!a)
return -ENOMEM;
a->path = strdup(path);
if (!a->path) {
free(a);
return -ENOMEM;
}
for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++)
a->limits[type] = cgroup_io_limit_defaults[type];
LIST_PREPEND(device_limits, c->io_device_limits, a);
}
a->limits[iol_type] = u64;
}
n++;
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
CGroupIODeviceLimit *a;
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
size_t size = 0;
if (n == 0) {
LIST_FOREACH(device_limits, a, c->io_device_limits)
a->limits[iol_type] = cgroup_io_limit_defaults[iol_type];
}
unit_invalidate_cgroup(u, CGROUP_MASK_IO);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fprintf(f, "%s=\n", name);
LIST_FOREACH(device_limits, a, c->io_device_limits)
if (a->limits[iol_type] != cgroup_io_limit_defaults[iol_type])
fprintf(f, "%s=%s %" PRIu64 "\n", name, a->path, a->limits[iol_type]);
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
}
return 1;
} else if (streq(name, "IODeviceWeight")) {
const char *path;
uint64_t weight;
unsigned n = 0;
r = sd_bus_message_enter_container(message, 'a', "(st)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(st)", &path, &weight)) > 0) {
if (!CGROUP_WEIGHT_IS_OK(weight) || weight == CGROUP_WEIGHT_INVALID)
return sd_bus_error_set_errnof(error, EINVAL, "IODeviceWeight out of range");
if (mode != UNIT_CHECK) {
CGroupIODeviceWeight *a = NULL, *b;
LIST_FOREACH(device_weights, b, c->io_device_weights) {
if (path_equal(b->path, path)) {
a = b;
break;
}
}
if (!a) {
a = new0(CGroupIODeviceWeight, 1);
if (!a)
return -ENOMEM;
a->path = strdup(path);
if (!a->path) {
free(a);
return -ENOMEM;
}
LIST_PREPEND(device_weights,c->io_device_weights, a);
}
a->weight = weight;
}
n++;
}
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
CGroupIODeviceWeight *a;
size_t size = 0;
if (n == 0) {
while (c->io_device_weights)
cgroup_context_free_io_device_weight(c, c->io_device_weights);
}
unit_invalidate_cgroup(u, CGROUP_MASK_IO);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fputs_unlocked("IODeviceWeight=\n", f);
LIST_FOREACH(device_weights, a, c->io_device_weights)
fprintf(f, "IODeviceWeight=%s %" PRIu64 "\n", a->path, a->weight);
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
}
return 1;
} else if (streq(name, "BlockIOAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->blockio_accounting = b;
unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
unit_write_drop_in_private(u, mode, name, b ? "BlockIOAccounting=yes" : "BlockIOAccounting=no");
}
return 1;
} else if (streq(name, "BlockIOWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (!CGROUP_BLKIO_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "BlockIOWeight value out of range");
if (mode != UNIT_CHECK) {
c->blockio_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
if (weight == CGROUP_BLKIO_WEIGHT_INVALID)
unit_write_drop_in_private(u, mode, name, "BlockIOWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "BlockIOWeight=%" PRIu64, weight);
}
return 1;
} else if (streq(name, "StartupBlockIOWeight")) {
uint64_t weight;
r = sd_bus_message_read(message, "t", &weight);
if (r < 0)
return r;
if (!CGROUP_BLKIO_WEIGHT_IS_OK(weight))
return sd_bus_error_set_errnof(error, EINVAL, "StartupBlockIOWeight value out of range");
if (mode != UNIT_CHECK) {
c->startup_blockio_weight = weight;
unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
if (weight == CGROUP_BLKIO_WEIGHT_INVALID)
unit_write_drop_in_private(u, mode, name, "StartupBlockIOWeight=");
else
unit_write_drop_in_private_format(u, mode, name, "StartupBlockIOWeight=%" PRIu64, weight);
}
return 1;
} else if (STR_IN_SET(name, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) {
const char *path;
bool read = true;
unsigned n = 0;
uint64_t u64;
if (streq(name, "BlockIOWriteBandwidth"))
read = false;
r = sd_bus_message_enter_container(message, 'a', "(st)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(st)", &path, &u64)) > 0) {
if (mode != UNIT_CHECK) {
CGroupBlockIODeviceBandwidth *a = NULL, *b;
LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
if (path_equal(path, b->path)) {
a = b;
break;
}
}
if (!a) {
a = new0(CGroupBlockIODeviceBandwidth, 1);
if (!a)
return -ENOMEM;
a->rbps = CGROUP_LIMIT_MAX;
a->wbps = CGROUP_LIMIT_MAX;
a->path = strdup(path);
if (!a->path) {
free(a);
return -ENOMEM;
}
LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, a);
}
if (read)
a->rbps = u64;
else
a->wbps = u64;
}
n++;
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
CGroupBlockIODeviceBandwidth *a;
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
size_t size = 0;
if (n == 0) {
LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths) {
if (read)
a->rbps = CGROUP_LIMIT_MAX;
else
a->wbps = CGROUP_LIMIT_MAX;
}
}
unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
if (read) {
fputs_unlocked("BlockIOReadBandwidth=\n", f);
LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths)
if (a->rbps != CGROUP_LIMIT_MAX)
fprintf(f, "BlockIOReadBandwidth=%s %" PRIu64 "\n", a->path, a->rbps);
} else {
fputs_unlocked("BlockIOWriteBandwidth=\n", f);
LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths)
if (a->wbps != CGROUP_LIMIT_MAX)
fprintf(f, "BlockIOWriteBandwidth=%s %" PRIu64 "\n", a->path, a->wbps);
}
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
}
return 1;
} else if (streq(name, "BlockIODeviceWeight")) {
const char *path;
uint64_t weight;
unsigned n = 0;
r = sd_bus_message_enter_container(message, 'a', "(st)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(st)", &path, &weight)) > 0) {
if (!CGROUP_BLKIO_WEIGHT_IS_OK(weight) || weight == CGROUP_BLKIO_WEIGHT_INVALID)
return sd_bus_error_set_errnof(error, EINVAL, "BlockIODeviceWeight out of range");
if (mode != UNIT_CHECK) {
CGroupBlockIODeviceWeight *a = NULL, *b;
LIST_FOREACH(device_weights, b, c->blockio_device_weights) {
if (path_equal(b->path, path)) {
a = b;
break;
}
}
if (!a) {
a = new0(CGroupBlockIODeviceWeight, 1);
if (!a)
return -ENOMEM;
a->path = strdup(path);
if (!a->path) {
free(a);
return -ENOMEM;
}
LIST_PREPEND(device_weights,c->blockio_device_weights, a);
}
a->weight = weight;
}
n++;
}
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
CGroupBlockIODeviceWeight *a;
size_t size = 0;
if (n == 0) {
while (c->blockio_device_weights)
cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
}
unit_invalidate_cgroup(u, CGROUP_MASK_BLKIO);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fputs_unlocked("BlockIODeviceWeight=\n", f);
LIST_FOREACH(device_weights, a, c->blockio_device_weights)
fprintf(f, "BlockIODeviceWeight=%s %" PRIu64 "\n", a->path, a->weight);
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
}
return 1;
} else if (streq(name, "MemoryAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->memory_accounting = b;
unit_invalidate_cgroup(u, CGROUP_MASK_MEMORY);
unit_write_drop_in_private(u, mode, name, b ? "MemoryAccounting=yes" : "MemoryAccounting=no");
}
return 1;
} else if (STR_IN_SET(name, "MemoryLow", "MemoryHigh", "MemoryMax", "MemorySwapMax")) {
uint64_t v;
r = sd_bus_message_read(message, "t", &v);
if (r < 0)
return r;
if (v <= 0)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is too small", name);
if (mode != UNIT_CHECK) {
if (streq(name, "MemoryLow"))
c->memory_low = v;
else if (streq(name, "MemoryHigh"))
c->memory_high = v;
else if (streq(name, "MemorySwapMax"))
c->memory_swap_max = v;
else
c->memory_max = v;
unit_invalidate_cgroup(u, CGROUP_MASK_MEMORY);
if (v == CGROUP_LIMIT_MAX)
unit_write_drop_in_private_format(u, mode, name, "%s=infinity", name);
else
unit_write_drop_in_private_format(u, mode, name, "%s=%" PRIu64, name, v);
}
return 1;
} else if (STR_IN_SET(name, "MemoryLowScale", "MemoryHighScale", "MemoryMaxScale")) {
uint32_t raw;
uint64_t v;
r = sd_bus_message_read(message, "u", &raw);
if (r < 0)
return r;
v = physical_memory_scale(raw, UINT32_MAX);
if (v <= 0 || v == UINT64_MAX)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is out of range", name);
if (mode != UNIT_CHECK) {
const char *e;
/* Chop off suffix */
assert_se(e = endswith(name, "Scale"));
name = strndupa(name, e - name);
if (streq(name, "MemoryLow"))
c->memory_low = v;
else if (streq(name, "MemoryHigh"))
c->memory_high = v;
else
c->memory_max = v;
unit_invalidate_cgroup(u, CGROUP_MASK_MEMORY);
unit_write_drop_in_private_format(u, mode, name, "%s=%" PRIu32 "%%", name,
(uint32_t) (DIV_ROUND_UP((uint64_t) raw * 100U, (uint64_t) UINT32_MAX)));
}
return 1;
} else if (streq(name, "MemoryLimit")) {
uint64_t limit;
r = sd_bus_message_read(message, "t", &limit);
if (r < 0)
return r;
if (limit <= 0)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is too small", name);
if (mode != UNIT_CHECK) {
c->memory_limit = limit;
unit_invalidate_cgroup(u, CGROUP_MASK_MEMORY);
if (limit == (uint64_t) -1)
unit_write_drop_in_private(u, mode, name, "MemoryLimit=infinity");
else
unit_write_drop_in_private_format(u, mode, name, "MemoryLimit=%" PRIu64, limit);
}
return 1;
} else if (streq(name, "MemoryLimitScale")) {
uint64_t limit;
uint32_t raw;
r = sd_bus_message_read(message, "u", &raw);
if (r < 0)
return r;
limit = physical_memory_scale(raw, UINT32_MAX);
if (limit <= 0 || limit == UINT64_MAX)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is out of range", name);
if (mode != UNIT_CHECK) {
c->memory_limit = limit;
unit_invalidate_cgroup(u, CGROUP_MASK_MEMORY);
unit_write_drop_in_private_format(u, mode, "MemoryLimit", "MemoryLimit=%" PRIu32 "%%",
(uint32_t) (DIV_ROUND_UP((uint64_t) raw * 100U, (uint64_t) UINT32_MAX)));
}
return 1;
} else if (streq(name, "DevicePolicy")) {
const char *policy;
CGroupDevicePolicy p;
r = sd_bus_message_read(message, "s", &policy);
if (r < 0)
return r;
p = cgroup_device_policy_from_string(policy);
if (p < 0)
return -EINVAL;
if (mode != UNIT_CHECK) {
c->device_policy = p;
unit_invalidate_cgroup(u, CGROUP_MASK_DEVICES);
unit_write_drop_in_private_format(u, mode, name, "DevicePolicy=%s", policy);
}
return 1;
} else if (streq(name, "DeviceAllow")) {
const char *path, *rwm;
unsigned n = 0;
r = sd_bus_message_enter_container(message, 'a', "(ss)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(ss)", &path, &rwm)) > 0) {
if ((!path_startswith(path, "/dev/") &&
!path_startswith(path, "/run/systemd/inaccessible/") &&
!startswith(path, "block-") &&
!startswith(path, "char-")) ||
strpbrk(path, WHITESPACE))
return sd_bus_error_set_errnof(error, EINVAL, "DeviceAllow= requires device node");
if (isempty(rwm))
rwm = "rwm";
if (!in_charset(rwm, "rwm"))
return sd_bus_error_set_errnof(error, EINVAL, "DeviceAllow= requires combination of rwm flags");
if (mode != UNIT_CHECK) {
CGroupDeviceAllow *a = NULL, *b;
LIST_FOREACH(device_allow, b, c->device_allow) {
if (path_equal(b->path, path)) {
a = b;
break;
}
}
if (!a) {
a = new0(CGroupDeviceAllow, 1);
if (!a)
return -ENOMEM;
a->path = strdup(path);
if (!a->path) {
free(a);
return -ENOMEM;
}
LIST_PREPEND(device_allow, c->device_allow, a);
}
a->r = !!strchr(rwm, 'r');
a->w = !!strchr(rwm, 'w');
a->m = !!strchr(rwm, 'm');
}
n++;
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
CGroupDeviceAllow *a;
size_t size = 0;
if (n == 0) {
while (c->device_allow)
cgroup_context_free_device_allow(c, c->device_allow);
}
unit_invalidate_cgroup(u, CGROUP_MASK_DEVICES);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fputs_unlocked("DeviceAllow=\n", f);
LIST_FOREACH(device_allow, a, c->device_allow)
fprintf(f, "DeviceAllow=%s %s%s%s\n", a->path, a->r ? "r" : "", a->w ? "w" : "", a->m ? "m" : "");
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
}
return 1;
} else if (streq(name, "TasksAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->tasks_accounting = b;
unit_invalidate_cgroup(u, CGROUP_MASK_PIDS);
unit_write_drop_in_private(u, mode, name, b ? "TasksAccounting=yes" : "TasksAccounting=no");
}
return 1;
} else if (streq(name, "TasksMax")) {
uint64_t limit;
r = sd_bus_message_read(message, "t", &limit);
if (r < 0)
return r;
if (limit <= 0)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is too small", name);
if (mode != UNIT_CHECK) {
c->tasks_max = limit;
unit_invalidate_cgroup(u, CGROUP_MASK_PIDS);
if (limit == (uint64_t) -1)
unit_write_drop_in_private(u, mode, name, "TasksMax=infinity");
else
unit_write_drop_in_private_format(u, mode, name, "TasksMax=%" PRIu64, limit);
}
return 1;
} else if (streq(name, "TasksMaxScale")) {
uint64_t limit;
uint32_t raw;
r = sd_bus_message_read(message, "u", &raw);
if (r < 0)
return r;
limit = system_tasks_max_scale(raw, UINT32_MAX);
if (limit <= 0 || limit >= UINT64_MAX)
return sd_bus_error_set_errnof(error, EINVAL, "%s= is out of range", name);
if (mode != UNIT_CHECK) {
c->tasks_max = limit;
unit_invalidate_cgroup(u, CGROUP_MASK_PIDS);
unit_write_drop_in_private_format(u, mode, name, "TasksMax=%" PRIu32 "%%",
(uint32_t) (DIV_ROUND_UP((uint64_t) raw * 100U, (uint64_t) UINT32_MAX)));
}
return 1;
} else if (streq(name, "IPAccounting")) {
int b;
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
if (mode != UNIT_CHECK) {
c->ip_accounting = b;
unit_invalidate_cgroup_bpf(u);
unit_write_drop_in_private(u, mode, name, b ? "IPAccounting=yes" : "IPAccounting=no");
}
return 1;
} else if (STR_IN_SET(name, "IPAddressAllow", "IPAddressDeny")) {
IPAddressAccessItem **list;
size_t n = 0;
list = streq(name, "IPAddressAllow") ? &c->ip_address_allow : &c->ip_address_deny;
r = sd_bus_message_enter_container(message, 'a', "(iayu)");
if (r < 0)
return r;
for (;;) {
const void *ap;
int32_t family;
uint32_t prefixlen;
size_t an;
r = sd_bus_message_enter_container(message, 'r', "iayu");
if (r < 0)
return r;
if (r == 0)
break;
r = sd_bus_message_read(message, "i", &family);
if (r < 0)
return r;
if (!IN_SET(family, AF_INET, AF_INET6))
return sd_bus_error_set_errnof(error, EINVAL, "IPAddressAllow= expects IPv4 or IPv6 addresses only.");
r = sd_bus_message_read_array(message, 'y', &ap, &an);
if (r < 0)
return r;
if (an != FAMILY_ADDRESS_SIZE(family))
return sd_bus_error_set_errnof(error, EINVAL, "IP address has wrong size for family (%s, expected %zu, got %zu)",
af_to_name(family), FAMILY_ADDRESS_SIZE(family), an);
r = sd_bus_message_read(message, "u", &prefixlen);
if (r < 0)
return r;
if (prefixlen > FAMILY_ADDRESS_SIZE(family)*8)
return sd_bus_error_set_errnof(error, EINVAL, "Prefix length too large for family.");
if (mode != UNIT_CHECK) {
IPAddressAccessItem *item;
item = new0(IPAddressAccessItem, 1);
if (!item)
return -ENOMEM;
item->family = family;
item->prefixlen = prefixlen;
memcpy(&item->address, ap, an);
LIST_PREPEND(items, *list, item);
}
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
n++;
}
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
*list = ip_address_access_reduce(*list);
if (mode != UNIT_CHECK) {
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
IPAddressAccessItem *item;
size_t size = 0;
if (n == 0)
*list = ip_address_access_free_all(*list);
unit_invalidate_cgroup_bpf(u);
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fputs_unlocked(name, f);
fputs_unlocked("=\n", f);
LIST_FOREACH(items, item, *list) {
char buffer[CONST_MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN)];
errno = 0;
if (!inet_ntop(item->family, &item->address, buffer, sizeof(buffer)))
return errno > 0 ? -errno : -EINVAL;
fprintf(f, "%s=%s/%u\n", name, buffer, item->prefixlen);
}
r = fflush_and_check(f);
if (r < 0)
return r;
unit_write_drop_in_private(u, mode, name, buf);
if (*list) {
r = bpf_firewall_supported();
if (r < 0)
return r;
if (r == 0)
log_warning("Transient unit %s configures an IP firewall, but the local system does not support BPF/cgroup firewalling.\n"
"Proceeding WITHOUT firewalling in effect!", u->id);
}
}
return 1;
}
if (u->transient && u->load_state == UNIT_STUB) {
r = bus_cgroup_set_transient_property(u, c, name, message, mode, error);
if (r != 0)
return r;
}
return 0;
}