diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-27 23:53:49 -0400 |
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committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-27 23:53:49 -0400 |
commit | 8afdea4cef99e4e22d7e941cb779cefcb65d2284 (patch) | |
tree | e674a72577d988bb8ecbc14338913dd0e17cee09 /src/libcore/dbus-cgroup.c | |
parent | 46565171d49814f56b340d8cd28d7a855cad8dee (diff) |
./move.sh
Diffstat (limited to 'src/libcore/dbus-cgroup.c')
-rw-r--r-- | src/libcore/dbus-cgroup.c | 1004 |
1 files changed, 1004 insertions, 0 deletions
diff --git a/src/libcore/dbus-cgroup.c b/src/libcore/dbus-cgroup.c new file mode 100644 index 0000000000..eef1c47c14 --- /dev/null +++ b/src/libcore/dbus-cgroup.c @@ -0,0 +1,1004 @@ +/*** + 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 <http://www.gnu.org/licenses/>. +***/ + +#include "alloc-util.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); +} + +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("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("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_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, "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); + 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("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 (streq(name, "BlockIOReadBandwidth") || streq(name, "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("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("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("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 (streq(name, "MemoryLimit")) { + uint64_t limit; + + r = sd_bus_message_read(message, "t", &limit); + if (r < 0) + return r; + + 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, "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) { + char *buf; + + c->device_policy = p; + unit_invalidate_cgroup(u, CGROUP_MASK_DEVICES); + + buf = strjoina("DevicePolicy=", policy); + unit_write_drop_in_private(u, mode, name, buf); + } + + 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 ((!startswith(path, "/dev/") && + !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("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 (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; + } + + 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; +} |