+static int blkio_map(const char *controller, const char *name, const char *value, char **ret) {
+ struct stat st;
+ char **l;
+
+ assert(controller);
+ assert(name);
+ assert(value);
+ assert(ret);
+
+ l = strv_split_quoted(value);
+ if (!l)
+ return -ENOMEM;
+
+ assert(strv_length(l) == 2);
+
+ if (stat(l[0], &st) < 0) {
+ log_warning("Couldn't stat device %s", l[0]);
+ strv_free(l);
+ return -errno;
+ }
+
+ if (!S_ISBLK(st.st_mode)) {
+ log_warning("%s is not a block device.", l[0]);
+ strv_free(l);
+ return -ENODEV;
+ }
+
+ if (asprintf(ret, "%u:%u %s", major(st.st_rdev), minor(st.st_rdev), l[1]) < 0) {
+ strv_free(l);
+ return -ENOMEM;
+ }
+
+ strv_free(l);
+ return 0;
+}
+
+int config_parse_unit_blkio_weight(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
+ Unit *u = data;
+ int r;
+ unsigned long ul;
+ const char *device = NULL, *weight;
+ unsigned k;
+ char *t, **l;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ l = strv_split_quoted(rvalue);
+ if (!l)
+ return -ENOMEM;
+
+ k = strv_length(l);
+ if (k < 1 || k > 2) {
+ log_error("[%s:%u] Failed to parse weight value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ if (k == 1)
+ weight = l[0];
+ else {
+ device = l[0];
+ weight = l[1];
+ }
+
+ if (device && !path_startswith(device, "/dev/")) {
+ log_error("[%s:%u] Failed to parse block device node value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ if (safe_atolu(weight, &ul) < 0 || ul < 10 || ul > 1000) {
+ log_error("[%s:%u] Failed to parse block IO weight value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ if (device)
+ r = asprintf(&t, "%s %lu", device, ul);
+ else
+ r = asprintf(&t, "%lu", ul);
+ strv_free(l);
+
+ if (r < 0)
+ return -ENOMEM;
+
+ if (device)
+ r = unit_add_cgroup_attribute(u, "blkio", "blkio.weight_device", t, blkio_map);
+ else
+ r = unit_add_cgroup_attribute(u, "blkio", "blkio.weight", t, NULL);
+ free(t);
+
+ if (r < 0) {
+ log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+int config_parse_unit_blkio_bandwidth(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
+ Unit *u = data;
+ int r;
+ off_t bytes;
+ unsigned k;
+ char *t, **l;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ l = strv_split_quoted(rvalue);
+ if (!l)
+ return -ENOMEM;
+
+ k = strv_length(l);
+ if (k != 2) {
+ log_error("[%s:%u] Failed to parse bandwidth value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ if (!path_startswith(l[0], "/dev/")) {
+ log_error("[%s:%u] Failed to parse block device node value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ if (parse_bytes(l[1], &bytes) < 0 || bytes <= 0) {
+ log_error("[%s:%u] Failed to parse block IO bandwith value, ignoring: %s", filename, line, rvalue);
+ strv_free(l);
+ return 0;
+ }
+
+ r = asprintf(&t, "%s %llu", l[0], (unsigned long long) bytes);
+ strv_free(l);
+
+ if (r < 0)
+ return -ENOMEM;
+
+ r = unit_add_cgroup_attribute(u, "blkio",
+ streq(lvalue, "BlockIOReadBandwidth") ? "blkio.read_bps_device" : "blkio.write_bps_device",
+ t, blkio_map);
+ free(t);
+
+ if (r < 0) {
+ log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+
~ianmdlvl / elogind.git / commitdiff