85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <string.h>
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#include <libcgroup.h>
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int read_stats(char *path, char *controller)
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{
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int ret;
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void *handle;
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struct cgroup_stat stat;
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ret = cgroup_read_stats_begin(controller, path, &handle, &stat);
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if (ret != 0) {
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fprintf(stderr, "stats read failed\n");
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return -1;
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}
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printf("Stats for %s:\n", path);
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printf("%s: %s", stat.name, stat.value);
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while ((ret = cgroup_read_stats_next(&handle, &stat)) !=
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ECGEOF) {
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printf("%s: %s", stat.name, stat.value);
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}
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cgroup_read_stats_end(&handle);
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printf("\n");
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int ret;
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char *controller;
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void *handle;
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struct cgroup_file_info info;
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int lvl;
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char cgroup_path[FILENAME_MAX];
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int root_len;
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if (argc < 2) {
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fprintf(stderr, "Usage %s: <controller name>\n",
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argv[0]);
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exit(EXIT_FAILURE);
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}
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controller = argv[1];
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ret = cgroup_init();
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if (ret != 0) {
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fprintf(stderr, "init failed\n");
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exit(EXIT_FAILURE);
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}
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ret = cgroup_walk_tree_begin(controller, "/", 0, &handle, &info, &lvl);
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if (ret != 0) {
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fprintf(stderr, "Walk failed\n");
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exit(EXIT_FAILURE);
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}
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root_len = strlen(info.full_path) - 1;
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strncpy(cgroup_path, info.path, FILENAME_MAX);
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ret = read_stats(cgroup_path, controller);
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if (ret < 0)
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exit(EXIT_FAILURE);
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while ((ret = cgroup_walk_tree_next(0, &handle, &info, lvl)) !=
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ECGEOF) {
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if (info.type != CGROUP_FILE_TYPE_DIR)
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continue;
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strncpy(cgroup_path, info.full_path + root_len, FILENAME_MAX);
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strcat(cgroup_path, "/");
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ret = read_stats(cgroup_path, controller);
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if (ret < 0)
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exit(EXIT_FAILURE);
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}
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cgroup_walk_tree_end(&handle);
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return EXIT_SUCCESS;
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}
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