From b750101eb236130cf056c675997decbac904cc49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:35:18 +0200 Subject: Adding upstream version 252.22. Signed-off-by: Daniel Baumann --- src/oom/test-oomd-util.c | 513 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 513 insertions(+) create mode 100644 src/oom/test-oomd-util.c (limited to 'src/oom/test-oomd-util.c') diff --git a/src/oom/test-oomd-util.c b/src/oom/test-oomd-util.c new file mode 100644 index 0000000..1d12045 --- /dev/null +++ b/src/oom/test-oomd-util.c @@ -0,0 +1,513 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include + +#include "alloc-util.h" +#include "cgroup-setup.h" +#include "cgroup-util.h" +#include "fd-util.h" +#include "fileio.h" +#include "fs-util.h" +#include "oomd-util.h" +#include "parse-util.h" +#include "path-util.h" +#include "string-util.h" +#include "strv.h" +#include "tests.h" +#include "tmpfile-util.h" + +static int fork_and_sleep(unsigned sleep_min) { + usec_t n, timeout, ts; + + pid_t pid = fork(); + assert_se(pid >= 0); + + if (pid == 0) { + timeout = sleep_min * USEC_PER_MINUTE; + ts = now(CLOCK_MONOTONIC); + for (;;) { + n = now(CLOCK_MONOTONIC); + if (ts + timeout < n) { + log_error("Child timed out waiting to be killed"); + abort(); + } + sleep(1); + } + } + + return pid; +} + +static void test_oomd_cgroup_kill(void) { + _cleanup_free_ char *cgroup_root = NULL, *cgroup = NULL; + int pid[2]; + int r; + + if (geteuid() != 0) + return (void) log_tests_skipped("not root"); + + if (cg_all_unified() <= 0) + return (void) log_tests_skipped("cgroups are not running in unified mode"); + + assert_se(cg_pid_get_path(NULL, 0, &cgroup_root) >= 0); + + /* Create another cgroup below this one for the pids we forked off. We need this to be managed + * by the test so that pid1 doesn't delete it before we can read the xattrs. */ + cgroup = path_join(cgroup_root, "oomdkilltest"); + assert_se(cgroup); + assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, cgroup) >= 0); + + /* If we don't have permissions to set xattrs we're likely in a userns or missing capabilities */ + r = cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_test", "test", 4, 0); + if (ERRNO_IS_PRIVILEGE(r) || ERRNO_IS_NOT_SUPPORTED(r)) + return (void) log_tests_skipped("Cannot set user xattrs"); + + /* Do this twice to also check the increment behavior on the xattrs */ + for (int i = 0; i < 2; i++) { + _cleanup_free_ char *v = NULL; + + for (int j = 0; j < 2; j++) { + pid[j] = fork_and_sleep(5); + assert_se(cg_attach(SYSTEMD_CGROUP_CONTROLLER, cgroup, pid[j]) >= 0); + } + + r = oomd_cgroup_kill(cgroup, false /* recurse */, false /* dry run */); + if (r <= 0) { + log_debug_errno(r, "Failed to kill processes under %s: %m", cgroup); + abort(); + } + + assert_se(cg_get_xattr_malloc(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_ooms", &v) >= 0); + assert_se(streq(v, i == 0 ? "1" : "2")); + v = mfree(v); + + /* Wait a bit since processes may take some time to be cleaned up. */ + sleep(2); + assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, cgroup) == true); + + assert_se(cg_get_xattr_malloc(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_kill", &v) >= 0); + assert_se(streq(v, i == 0 ? "2" : "4")); + } +} + +static void test_oomd_cgroup_context_acquire_and_insert(void) { + _cleanup_hashmap_free_ Hashmap *h1 = NULL, *h2 = NULL; + _cleanup_(oomd_cgroup_context_freep) OomdCGroupContext *ctx = NULL; + _cleanup_free_ char *cgroup = NULL; + OomdCGroupContext *c1, *c2; + CGroupMask mask; + + if (geteuid() != 0) + return (void) log_tests_skipped("not root"); + + if (!is_pressure_supported()) + return (void) log_tests_skipped("system does not support pressure"); + + if (cg_all_unified() <= 0) + return (void) log_tests_skipped("cgroups are not running in unified mode"); + + assert_se(cg_mask_supported(&mask) >= 0); + + if (!FLAGS_SET(mask, CGROUP_MASK_MEMORY)) + return (void) log_tests_skipped("cgroup memory controller is not available"); + + assert_se(cg_pid_get_path(NULL, 0, &cgroup) >= 0); + assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0); + + assert_se(streq(ctx->path, cgroup)); + assert_se(ctx->current_memory_usage > 0); + assert_se(ctx->memory_min == 0); + assert_se(ctx->memory_low == 0); + assert_se(ctx->swap_usage == 0); + assert_se(ctx->last_pgscan == 0); + assert_se(ctx->pgscan == 0); + ctx = oomd_cgroup_context_free(ctx); + + assert_se(oomd_cgroup_context_acquire("", &ctx) == 0); + assert_se(streq(ctx->path, "/")); + assert_se(ctx->current_memory_usage > 0); + + /* Test hashmap inserts */ + assert_se(h1 = hashmap_new(&oomd_cgroup_ctx_hash_ops)); + assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == 0); + c1 = hashmap_get(h1, cgroup); + assert_se(c1); + assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == -EEXIST); + + /* make sure certain values from h1 get updated in h2 */ + c1->pgscan = UINT64_MAX; + c1->mem_pressure_limit = 6789; + c1->mem_pressure_limit_hit_start = 42; + c1->last_had_mem_reclaim = 888; + assert_se(h2 = hashmap_new(&oomd_cgroup_ctx_hash_ops)); + assert_se(oomd_insert_cgroup_context(h1, h2, cgroup) == 0); + c1 = hashmap_get(h1, cgroup); + c2 = hashmap_get(h2, cgroup); + assert_se(c1); + assert_se(c2); + assert_se(c1 != c2); + assert_se(c2->last_pgscan == UINT64_MAX); + assert_se(c2->mem_pressure_limit == 6789); + assert_se(c2->mem_pressure_limit_hit_start == 42); + assert_se(c2->last_had_mem_reclaim == 888); /* assumes the live pgscan is less than UINT64_MAX */ +} + +static void test_oomd_update_cgroup_contexts_between_hashmaps(void) { + _cleanup_hashmap_free_ Hashmap *h_old = NULL, *h_new = NULL; + OomdCGroupContext *c_old, *c_new; + char **paths = STRV_MAKE("/0.slice", + "/1.slice"); + + OomdCGroupContext ctx_old[2] = { + { .path = paths[0], + .mem_pressure_limit = 5, + .mem_pressure_limit_hit_start = 777, + .last_had_mem_reclaim = 888, + .pgscan = 57 }, + { .path = paths[1], + .mem_pressure_limit = 6, + .mem_pressure_limit_hit_start = 888, + .last_had_mem_reclaim = 888, + .pgscan = 42 }, + }; + + OomdCGroupContext ctx_new[2] = { + { .path = paths[0], + .pgscan = 57 }, + { .path = paths[1], + .pgscan = 101 }, + }; + + assert_se(h_old = hashmap_new(&string_hash_ops)); + assert_se(hashmap_put(h_old, paths[0], &ctx_old[0]) >= 0); + assert_se(hashmap_put(h_old, paths[1], &ctx_old[1]) >= 0); + + assert_se(h_new = hashmap_new(&string_hash_ops)); + assert_se(hashmap_put(h_new, paths[0], &ctx_new[0]) >= 0); + assert_se(hashmap_put(h_new, paths[1], &ctx_new[1]) >= 0); + + oomd_update_cgroup_contexts_between_hashmaps(h_old, h_new); + + assert_se(c_old = hashmap_get(h_old, "/0.slice")); + assert_se(c_new = hashmap_get(h_new, "/0.slice")); + assert_se(c_old->pgscan == c_new->last_pgscan); + assert_se(c_old->mem_pressure_limit == c_new->mem_pressure_limit); + assert_se(c_old->mem_pressure_limit_hit_start == c_new->mem_pressure_limit_hit_start); + assert_se(c_old->last_had_mem_reclaim == c_new->last_had_mem_reclaim); + + assert_se(c_old = hashmap_get(h_old, "/1.slice")); + assert_se(c_new = hashmap_get(h_new, "/1.slice")); + assert_se(c_old->pgscan == c_new->last_pgscan); + assert_se(c_old->mem_pressure_limit == c_new->mem_pressure_limit); + assert_se(c_old->mem_pressure_limit_hit_start == c_new->mem_pressure_limit_hit_start); + assert_se(c_new->last_had_mem_reclaim > c_old->last_had_mem_reclaim); +} + +static void test_oomd_system_context_acquire(void) { + _cleanup_(unlink_tempfilep) char path[] = "/tmp/oomdgetsysctxtestXXXXXX"; + _cleanup_close_ int fd = -1; + OomdSystemContext ctx; + + if (geteuid() != 0) + return (void) log_tests_skipped("not root"); + + assert_se((fd = mkostemp_safe(path)) >= 0); + + assert_se(oomd_system_context_acquire("/verylikelynonexistentpath", &ctx) == -ENOENT); + + assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL); + + assert_se(write_string_file(path, "some\nwords\nacross\nmultiple\nlines", WRITE_STRING_FILE_CREATE) == 0); + assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL); + + assert_se(write_string_file(path, "MemTotal: 32495256 kB trailing\n" + "MemFree: 9880512 kB data\n" + "SwapTotal: 8388604 kB is\n" + "SwapFree: 7604 kB bad\n", WRITE_STRING_FILE_CREATE) == 0); + assert_se(oomd_system_context_acquire(path, &ctx) == -EINVAL); + + assert_se(write_string_file(path, "MemTotal: 32495256 kB\n" + "MemFree: 9880512 kB\n" + "MemAvailable: 21777088 kB\n" + "Buffers: 5968 kB\n" + "Cached: 14344796 kB\n" + "Unevictable: 740004 kB\n" + "Mlocked: 4484 kB\n" + "SwapTotal: 8388604 kB\n" + "SwapFree: 7604 kB\n", WRITE_STRING_FILE_CREATE) == 0); + assert_se(oomd_system_context_acquire(path, &ctx) == 0); + assert_se(ctx.mem_total == 33275142144); + assert_se(ctx.mem_used == 10975404032); + assert_se(ctx.swap_total == 8589930496); + assert_se(ctx.swap_used == 8582144000); +} + +static void test_oomd_pressure_above(void) { + _cleanup_hashmap_free_ Hashmap *h1 = NULL, *h2 = NULL; + _cleanup_set_free_ Set *t1 = NULL, *t2 = NULL, *t3 = NULL; + OomdCGroupContext ctx[2] = {}, *c; + loadavg_t threshold; + + assert_se(store_loadavg_fixed_point(80, 0, &threshold) == 0); + + /* /herp.slice */ + assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg10)) == 0); + assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg60)) == 0); + assert_se(store_loadavg_fixed_point(99, 99, &(ctx[0].memory_pressure.avg300)) == 0); + ctx[0].mem_pressure_limit = threshold; + + /* /derp.slice */ + assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg10)) == 0); + assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg60)) == 0); + assert_se(store_loadavg_fixed_point(1, 11, &(ctx[1].memory_pressure.avg300)) == 0); + ctx[1].mem_pressure_limit = threshold; + + /* High memory pressure */ + assert_se(h1 = hashmap_new(&string_hash_ops)); + assert_se(hashmap_put(h1, "/herp.slice", &ctx[0]) >= 0); + assert_se(oomd_pressure_above(h1, 0 /* duration */, &t1) == 1); + assert_se(set_contains(t1, &ctx[0])); + assert_se(c = hashmap_get(h1, "/herp.slice")); + assert_se(c->mem_pressure_limit_hit_start > 0); + + /* Low memory pressure */ + assert_se(h2 = hashmap_new(&string_hash_ops)); + assert_se(hashmap_put(h2, "/derp.slice", &ctx[1]) >= 0); + assert_se(oomd_pressure_above(h2, 0 /* duration */, &t2) == 0); + assert_se(!t2); + assert_se(c = hashmap_get(h2, "/derp.slice")); + assert_se(c->mem_pressure_limit_hit_start == 0); + + /* High memory pressure w/ multiple cgroups */ + assert_se(hashmap_put(h1, "/derp.slice", &ctx[1]) >= 0); + assert_se(oomd_pressure_above(h1, 0 /* duration */, &t3) == 1); + assert_se(set_contains(t3, &ctx[0])); + assert_se(set_size(t3) == 1); + assert_se(c = hashmap_get(h1, "/herp.slice")); + assert_se(c->mem_pressure_limit_hit_start > 0); + assert_se(c = hashmap_get(h1, "/derp.slice")); + assert_se(c->mem_pressure_limit_hit_start == 0); +} + +static void test_oomd_mem_and_swap_free_below(void) { + OomdSystemContext ctx = (OomdSystemContext) { + .mem_total = UINT64_C(20971512) * 1024U, + .mem_used = UINT64_C(3310136) * 1024U, + .swap_total = UINT64_C(20971512) * 1024U, + .swap_used = UINT64_C(20971440) * 1024U, + }; + assert_se(oomd_mem_available_below(&ctx, 2000) == false); + assert_se(oomd_swap_free_below(&ctx, 2000) == true); + + ctx = (OomdSystemContext) { + .mem_total = UINT64_C(20971512) * 1024U, + .mem_used = UINT64_C(20971440) * 1024U, + .swap_total = UINT64_C(20971512) * 1024U, + .swap_used = UINT64_C(3310136) * 1024U, + }; + assert_se(oomd_mem_available_below(&ctx, 2000) == true); + assert_se(oomd_swap_free_below(&ctx, 2000) == false); + + ctx = (OomdSystemContext) { + .mem_total = 0, + .mem_used = 0, + .swap_total = 0, + .swap_used = 0, + }; + assert_se(oomd_mem_available_below(&ctx, 2000) == false); + assert_se(oomd_swap_free_below(&ctx, 2000) == false); +} + +static void test_oomd_sort_cgroups(void) { + _cleanup_hashmap_free_ Hashmap *h = NULL; + _cleanup_free_ OomdCGroupContext **sorted_cgroups; + char **paths = STRV_MAKE("/herp.slice", + "/herp.slice/derp.scope", + "/herp.slice/derp.scope/sheep.service", + "/zupa.slice", + "/boop.slice", + "/omitted.slice", + "/avoid.slice"); + + OomdCGroupContext ctx[7] = { + { .path = paths[0], + .swap_usage = 20, + .last_pgscan = 0, + .pgscan = 33, + .current_memory_usage = 10 }, + { .path = paths[1], + .swap_usage = 60, + .last_pgscan = 33, + .pgscan = 1, + .current_memory_usage = 20 }, + { .path = paths[2], + .swap_usage = 40, + .last_pgscan = 1, + .pgscan = 33, + .current_memory_usage = 40 }, + { .path = paths[3], + .swap_usage = 10, + .last_pgscan = 33, + .pgscan = 2, + .current_memory_usage = 10 }, + { .path = paths[4], + .swap_usage = 11, + .last_pgscan = 33, + .pgscan = 33, + .current_memory_usage = 10 }, + { .path = paths[5], + .swap_usage = 90, + .last_pgscan = 0, + .pgscan = UINT64_MAX, + .preference = MANAGED_OOM_PREFERENCE_OMIT }, + { .path = paths[6], + .swap_usage = 99, + .last_pgscan = 0, + .pgscan = UINT64_MAX, + .preference = MANAGED_OOM_PREFERENCE_AVOID }, + }; + + assert_se(h = hashmap_new(&string_hash_ops)); + + assert_se(hashmap_put(h, "/herp.slice", &ctx[0]) >= 0); + assert_se(hashmap_put(h, "/herp.slice/derp.scope", &ctx[1]) >= 0); + assert_se(hashmap_put(h, "/herp.slice/derp.scope/sheep.service", &ctx[2]) >= 0); + assert_se(hashmap_put(h, "/zupa.slice", &ctx[3]) >= 0); + assert_se(hashmap_put(h, "/boop.slice", &ctx[4]) >= 0); + assert_se(hashmap_put(h, "/omitted.slice", &ctx[5]) >= 0); + assert_se(hashmap_put(h, "/avoid.slice", &ctx[6]) >= 0); + + assert_se(oomd_sort_cgroup_contexts(h, compare_swap_usage, NULL, &sorted_cgroups) == 6); + assert_se(sorted_cgroups[0] == &ctx[1]); + assert_se(sorted_cgroups[1] == &ctx[2]); + assert_se(sorted_cgroups[2] == &ctx[0]); + assert_se(sorted_cgroups[3] == &ctx[4]); + assert_se(sorted_cgroups[4] == &ctx[3]); + assert_se(sorted_cgroups[5] == &ctx[6]); + sorted_cgroups = mfree(sorted_cgroups); + + assert_se(oomd_sort_cgroup_contexts(h, compare_pgscan_rate_and_memory_usage, NULL, &sorted_cgroups) == 6); + assert_se(sorted_cgroups[0] == &ctx[0]); + assert_se(sorted_cgroups[1] == &ctx[2]); + assert_se(sorted_cgroups[2] == &ctx[3]); + assert_se(sorted_cgroups[3] == &ctx[1]); + assert_se(sorted_cgroups[4] == &ctx[4]); + assert_se(sorted_cgroups[5] == &ctx[6]); + sorted_cgroups = mfree(sorted_cgroups); + + assert_se(oomd_sort_cgroup_contexts(h, compare_pgscan_rate_and_memory_usage, "/herp.slice/derp.scope", &sorted_cgroups) == 2); + assert_se(sorted_cgroups[0] == &ctx[2]); + assert_se(sorted_cgroups[1] == &ctx[1]); + assert_se(sorted_cgroups[2] == 0); + assert_se(sorted_cgroups[3] == 0); + assert_se(sorted_cgroups[4] == 0); + assert_se(sorted_cgroups[5] == 0); + assert_se(sorted_cgroups[6] == 0); + sorted_cgroups = mfree(sorted_cgroups); +} + +static void test_oomd_fetch_cgroup_oom_preference(void) { + _cleanup_(oomd_cgroup_context_freep) OomdCGroupContext *ctx = NULL; + _cleanup_free_ char *cgroup = NULL; + ManagedOOMPreference root_pref; + CGroupMask mask; + bool test_xattrs; + int root_xattrs, r; + + if (geteuid() != 0) + return (void) log_tests_skipped("not root"); + + if (!is_pressure_supported()) + return (void) log_tests_skipped("system does not support pressure"); + + if (cg_all_unified() <= 0) + return (void) log_tests_skipped("cgroups are not running in unified mode"); + + assert_se(cg_mask_supported(&mask) >= 0); + + if (!FLAGS_SET(mask, CGROUP_MASK_MEMORY)) + return (void) log_tests_skipped("cgroup memory controller is not available"); + + assert_se(cg_pid_get_path(NULL, 0, &cgroup) >= 0); + assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0); + + /* If we don't have permissions to set xattrs we're likely in a userns or missing capabilities + * so skip the xattr portions of the test. */ + r = cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_test", "1", 1, 0); + test_xattrs = !ERRNO_IS_PRIVILEGE(r) && !ERRNO_IS_NOT_SUPPORTED(r); + + if (test_xattrs) { + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0); + assert_se(cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_omit", "1", 1, 0) >= 0); + assert_se(cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_avoid", "1", 1, 0) >= 0); + + /* omit takes precedence over avoid when both are set to true */ + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0); + assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_OMIT); + } else { + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) < 0); + assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_NONE); + } + ctx = oomd_cgroup_context_free(ctx); + + /* also check when only avoid is set to true */ + if (test_xattrs) { + assert_se(cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_omit", "0", 1, 0) >= 0); + assert_se(cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_avoid", "1", 1, 0) >= 0); + assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0); + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0); + assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_AVOID); + ctx = oomd_cgroup_context_free(ctx); + } + + /* Test the root cgroup */ + /* Root cgroup is live and not made on demand like the cgroup the test runs in. It can have varying + * xattrs set already so let's read in the booleans first to get the final preference value. */ + assert_se(oomd_cgroup_context_acquire("", &ctx) == 0); + root_xattrs = cg_get_xattr_bool(SYSTEMD_CGROUP_CONTROLLER, "", "user.oomd_omit"); + root_pref = root_xattrs > 0 ? MANAGED_OOM_PREFERENCE_OMIT : MANAGED_OOM_PREFERENCE_NONE; + root_xattrs = cg_get_xattr_bool(SYSTEMD_CGROUP_CONTROLLER, "", "user.oomd_avoid"); + root_pref = root_xattrs > 0 ? MANAGED_OOM_PREFERENCE_AVOID : MANAGED_OOM_PREFERENCE_NONE; + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0); + assert_se(ctx->preference == root_pref); + + assert_se(oomd_fetch_cgroup_oom_preference(ctx, "/herp.slice/derp.scope") == -EINVAL); + + /* Assert that avoid/omit are not set if the cgroup and prefix are not + * owned by the same user.*/ + if (test_xattrs && !empty_or_root(cgroup)) { + ctx = oomd_cgroup_context_free(ctx); + assert_se(cg_set_access(SYSTEMD_CGROUP_CONTROLLER, cgroup, 61183, 0) >= 0); + assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0); + + assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0); + assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_NONE); + + assert_se(oomd_fetch_cgroup_oom_preference(ctx, ctx->path) == 0); + assert_se(ctx->preference == MANAGED_OOM_PREFERENCE_AVOID); + } +} + +int main(void) { + int r; + + test_setup_logging(LOG_DEBUG); + + test_oomd_update_cgroup_contexts_between_hashmaps(); + test_oomd_system_context_acquire(); + test_oomd_pressure_above(); + test_oomd_mem_and_swap_free_below(); + test_oomd_sort_cgroups(); + + /* The following tests operate on live cgroups */ + + r = enter_cgroup_root(NULL); + if (r < 0) + return log_tests_skipped_errno(r, "failed to enter a test cgroup scope"); + + test_oomd_cgroup_kill(); + test_oomd_cgroup_context_acquire_and_insert(); + test_oomd_fetch_cgroup_oom_preference(); + + return 0; +} -- cgit v1.2.3