diff options
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/dbus-cgroup.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c index 4ce7dc5e7f..0c12c50fd2 100644 --- a/src/core/dbus-cgroup.c +++ b/src/core/dbus-cgroup.c @@ -222,6 +222,101 @@ int bus_cgroup_set_property( return 1; + } else if (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth")) { + DBusMessageIter sub; + unsigned n = 0; + bool read = true; + + if (streq(name, "BlockIOWriteBandwidth")) + read = false; + + if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY || + dbus_message_iter_get_element_type(i) != DBUS_TYPE_STRUCT) + return -EINVAL; + + dbus_message_iter_recurse(i, &sub); + while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { + DBusMessageIter sub2; + const char *path; + uint64_t u64; + CGroupBlockIODeviceBandwidth *a; + + dbus_message_iter_recurse(&sub, &sub2); + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 || + bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &u64, false) < 0) + return -EINVAL; + + if (mode != UNIT_CHECK) { + CGroupBlockIODeviceBandwidth *b; + bool exist = false; + + LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) { + if (path_equal(path, b->path) && read == b->read) { + a = b; + exist = true; + break; + } + } + + if (!exist) { + a = new0(CGroupBlockIODeviceBandwidth, 1); + if (!a) + return -ENOMEM; + + a->read = read; + a->path = strdup(path); + if (!a->path) { + free(a); + return -ENOMEM; + } + } + + a->bandwidth = u64; + + if (!exist) + LIST_PREPEND(CGroupBlockIODeviceBandwidth, device_bandwidths, + c->blockio_device_bandwidths, a); + } + + n++; + dbus_message_iter_next(&sub); + } + + if (mode != UNIT_CHECK) { + _cleanup_free_ char *buf = NULL; + _cleanup_fclose_ FILE *f = NULL; + CGroupBlockIODeviceBandwidth *a; + CGroupBlockIODeviceBandwidth *next; + size_t size = 0; + + if (n == 0) { + LIST_FOREACH_SAFE(device_bandwidths, a, next, c->blockio_device_bandwidths) + if (a->read == read) + cgroup_context_free_blockio_device_bandwidth(c, a); + } + + 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->read) + fprintf(f, "BlockIOReadBandwidth=%s %" PRIu64 "\n", a->path, a->bandwidth); + } else { + fputs("BlockIOWriteBandwidth=\n", f); + LIST_FOREACH(device_bandwidths, a, c->blockio_device_bandwidths) + if (!a->read) + fprintf(f, "BlockIOWriteBandwidth=%s %" PRIu64 "\n", a->path, a->bandwidth); + } + + fflush(f); + unit_write_drop_in_private(u, mode, name, buf); + } + + return 1; + } else if (streq(name, "MemoryAccounting")) { if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_BOOLEAN) |