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Commit | Line | Data |
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9aef9a67 LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include <errno.h> | |
4 | ||
3c14dc61 | 5 | #include "errno-util.h" |
aa892669 | 6 | #include "format-util.h" |
9aef9a67 LP |
7 | #include "log.h" |
8 | #include "procfs-util.h" | |
3c14dc61 | 9 | #include "tests.h" |
9aef9a67 LP |
10 | |
11 | int main(int argc, char *argv[]) { | |
a04fcf17 LP |
12 | char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_BYTES_MAX)]; |
13 | nsec_t nsec; | |
9aef9a67 LP |
14 | uint64_t v; |
15 | int r; | |
16 | ||
17 | log_parse_environment(); | |
18 | log_open(); | |
19 | ||
a04fcf17 | 20 | assert_se(procfs_cpu_get_usage(&nsec) >= 0); |
3fe91079 | 21 | log_info("Current system CPU time: %s", format_timespan(buf, sizeof(buf), nsec/NSEC_PER_USEC, 1)); |
a04fcf17 | 22 | |
c482724a | 23 | assert_se(procfs_memory_get_used(&v) >= 0); |
a04fcf17 LP |
24 | log_info("Current memory usage: %s", format_bytes(buf, sizeof(buf), v)); |
25 | ||
9aef9a67 LP |
26 | assert_se(procfs_tasks_get_current(&v) >= 0); |
27 | log_info("Current number of tasks: %" PRIu64, v); | |
28 | ||
3c14dc61 TM |
29 | r = procfs_tasks_get_limit(&v); |
30 | if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r)) | |
31 | return log_tests_skipped("can't read /proc/sys/kernel/pid_max"); | |
32 | ||
33 | assert_se(r >= 0); | |
9aef9a67 LP |
34 | log_info("Limit of tasks: %" PRIu64, v); |
35 | assert_se(v > 0); | |
36 | assert_se(procfs_tasks_set_limit(v) >= 0); | |
37 | ||
38 | if (v > 100) { | |
39 | uint64_t w; | |
40 | r = procfs_tasks_set_limit(v-1); | |
41 | assert_se(IN_SET(r, 0, -EPERM, -EACCES, -EROFS)); | |
42 | ||
43 | assert_se(procfs_tasks_get_limit(&w) >= 0); | |
44 | assert_se((r == 0 && w == v - 1) || (r < 0 && w == v)); | |
45 | ||
46 | assert_se(procfs_tasks_set_limit(v) >= 0); | |
47 | ||
48 | assert_se(procfs_tasks_get_limit(&w) >= 0); | |
49 | assert_se(v == w); | |
50 | } | |
51 | ||
52 | return 0; | |
53 | } |