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-rw-r--r--src/test/test-procfs-util.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/test/test-procfs-util.c b/src/test/test-procfs-util.c
new file mode 100644
index 0000000..b2679e3
--- /dev/null
+++ b/src/test/test-procfs-util.c
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+
+#include "errno-util.h"
+#include "format-util.h"
+#include "log.h"
+#include "procfs-util.h"
+#include "tests.h"
+
+int main(int argc, char *argv[]) {
+ char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_BYTES_MAX)];
+ nsec_t nsec;
+ uint64_t v;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ assert_se(procfs_cpu_get_usage(&nsec) >= 0);
+ log_info("Current system CPU time: %s", format_timespan(buf, sizeof(buf), nsec/NSEC_PER_USEC, 1));
+
+ assert_se(procfs_memory_get_used(&v) >= 0);
+ log_info("Current memory usage: %s", format_bytes(buf, sizeof(buf), v));
+
+ assert_se(procfs_tasks_get_current(&v) >= 0);
+ log_info("Current number of tasks: %" PRIu64, v);
+
+ r = procfs_tasks_get_limit(&v);
+ if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r))
+ return log_tests_skipped("can't read /proc/sys/kernel/pid_max");
+
+ assert_se(r >= 0);
+ log_info("Limit of tasks: %" PRIu64, v);
+ assert_se(v > 0);
+ assert_se(procfs_tasks_set_limit(v) >= 0);
+
+ if (v > 100) {
+ uint64_t w;
+ r = procfs_tasks_set_limit(v-1);
+ assert_se(IN_SET(r, 0, -EPERM, -EACCES, -EROFS));
+
+ assert_se(procfs_tasks_get_limit(&w) >= 0);
+ assert_se((r == 0 && w == v - 1) || (r < 0 && w == v));
+
+ assert_se(procfs_tasks_set_limit(v) >= 0);
+
+ assert_se(procfs_tasks_get_limit(&w) >= 0);
+ assert_se(v == w);
+ }
+
+ return 0;
+}