build-sys: move source files to subdirectory

1 files changed, 0 insertions, 561 deletions

diff --git a/cgroup.c b/cgroup.c
deleted file mode 100644
index 301fc949da..0000000000
--- a/cgroup.c
+++ /dev/null
@@ -1,561 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <assert.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <signal.h>
-#include <sys/mount.h>
-
-#include "cgroup.h"
-#include "log.h"
-
-static int translate_error(int error, int _errno) {
-
-        switch (error) {
-
-        case ECGROUPNOTCOMPILED:
-        case ECGROUPNOTMOUNTED:
-        case ECGROUPNOTEXIST:
-        case ECGROUPNOTCREATED:
-                return -ENOENT;
-
-        case ECGINVAL:
-                return -EINVAL;
-
-        case ECGROUPNOTALLOWED:
-                return -EPERM;
-
-        case ECGOTHER:
-                return -_errno;
-        }
-
-        return -EIO;
-}
-
-int cgroup_bonding_realize(CGroupBonding *b) {
-        int r;
-
-        assert(b);
-        assert(b->path);
-        assert(b->controller);
-
-        if (b->cgroup)
-                return 0;
-
-        if (!(b->cgroup = cgroup_new_cgroup(b->path)))
-                return -ENOMEM;
-
-        if (!cgroup_add_controller(b->cgroup, b->controller)) {
-                r = -ENOMEM;
-                goto fail;
-        }
-
-        if (b->inherit)
-                r = cgroup_create_cgroup_from_parent(b->cgroup, true);
-        else
-                r = cgroup_create_cgroup(b->cgroup, true);
-
-        if (r != 0) {
-                r = translate_error(r, errno);
-                goto fail;
-        }
-
-        return 0;
-
-fail:
-        cgroup_free(&b->cgroup);
-        b->cgroup = NULL;
-        return r;
-}
-
-int cgroup_bonding_realize_list(CGroupBonding *first) {
-        CGroupBonding *b;
-
-        LIST_FOREACH(by_unit, b, first) {
-                int r;
-
-                if ((r = cgroup_bonding_realize(b)) < 0)
-                        return r;
-        }
-
-        return 0;
-}
-
-void cgroup_bonding_free(CGroupBonding *b) {
-        assert(b);
-
-        if (b->unit) {
-                CGroupBonding *f;
-
-                LIST_REMOVE(CGroupBonding, by_unit, b->unit->meta.cgroup_bondings, b);
-
-                assert_se(f = hashmap_get(b->unit->meta.manager->cgroup_bondings, b->path));
-                LIST_REMOVE(CGroupBonding, by_path, f, b);
-
-                if (f)
-                        hashmap_replace(b->unit->meta.manager->cgroup_bondings, b->path, f);
-                else
-                        hashmap_remove(b->unit->meta.manager->cgroup_bondings, b->path);
-        }
-
-        if (b->cgroup) {
-                if (b->only_us && b->clean_up && cgroup_bonding_is_empty(b) > 0)
-                        cgroup_delete_cgroup_ext(b->cgroup, true);
-
-                cgroup_free(&b->cgroup);
-        }
-
-        free(b->controller);
-        free(b->path);
-        free(b);
-}
-
-void cgroup_bonding_free_list(CGroupBonding *first) {
-        CGroupBonding *b, *n;
-
-        LIST_FOREACH_SAFE(by_unit, b, n, first)
-                cgroup_bonding_free(b);
-}
-
-int cgroup_bonding_install(CGroupBonding *b, pid_t pid) {
-        int r;
-
-        assert(b);
-        assert(pid >= 0);
-
-        if (pid == 0)
-                pid = getpid();
-
-        if (!b->cgroup)
-                return -ENOENT;
-
-        if ((r = cgroup_attach_task_pid(b->cgroup, pid)))
-                return translate_error(r, errno);
-
-        return 0;
-}
-
-int cgroup_bonding_install_list(CGroupBonding *first, pid_t pid) {
-        CGroupBonding *b;
-
-        LIST_FOREACH(by_unit, b, first) {
-                int r;
-
-                if ((r = cgroup_bonding_install(b, pid)) < 0)
-                        return r;
-        }
-
-        return 0;
-}
-
-int cgroup_bonding_kill(CGroupBonding *b, int sig) {
-        int r;
-        Set *s;
-        bool done;
-        bool killed = false;
-
-        assert(b);
-        assert(sig > 0);
-
-        if (!b->only_us)
-                return -EAGAIN;
-
-        if (!(s = set_new(trivial_hash_func, trivial_compare_func)))
-                return -ENOMEM;
-
-        do {
-                void *iterator;
-                pid_t pid;
-
-                done = true;
-
-                if ((r = cgroup_get_task_begin(b->path, b->controller, &iterator, &pid)) != 0) {
-                        if (r == ECGEOF) {
-                                r = 0;
-                                goto kill_done;
-                        } else {
-                                r = translate_error(r, errno);
-                                break;
-                        }
-                }
-
-                for (;;) {
-                        if (set_get(s, INT_TO_PTR(pid)) != INT_TO_PTR(pid)) {
-
-                                /* If we haven't killed this process
-                                 * yet, kill it */
-
-                                if (kill(pid, sig) < 0 && errno != ESRCH) {
-                                        r = -errno;
-                                        break;
-                                }
-
-                                killed = true;
-                                done = false;
-
-                                if ((r = set_put(s, INT_TO_PTR(pid))) < 0)
-                                    break;
-                        }
-
-                        if ((r = cgroup_get_task_next(&iterator, &pid)) != 0) {
-
-                                if (r == ECGEOF)
-                                        r = 0;
-                                else
-                                        r = translate_error(r, errno);
-
-                                break;
-                        }
-                }
-
-        kill_done:
-                assert_se(cgroup_get_task_end(&iterator) == 0);
-
-                /* To avoid racing against processes which fork
-                 * quicker than we can kill them we repeat this until
-                 * no new pids need to be killed. */
-
-        } while (!done && r >= 0);
-
-        set_free(s);
-
-        if (r < 0)
-                return r;
-
-        return killed ? 0 : -ESRCH;
-}
-
-int cgroup_bonding_kill_list(CGroupBonding *first, int sig) {
-        CGroupBonding *b;
-        int r = -EAGAIN;
-
-        LIST_FOREACH(by_unit, b, first) {
-                if ((r = cgroup_bonding_kill(b, sig)) < 0) {
-                        if (r == -EAGAIN || -ESRCH)
-                                continue;
-
-                        return r;
-                }
-
-                return 0;
-        }
-
-        return r;
-}
-
-/* Returns 1 if the group is empty, 0 if it is not, -EAGAIN if we
- * cannot know */
-int cgroup_bonding_is_empty(CGroupBonding *b) {
-        void *iterator;
-        pid_t pid;
-        int r;
-
-        assert(b);
-
-        r = cgroup_get_task_begin(b->path, b->controller, &iterator, &pid);
-
-        if (r == 0 || r == ECGEOF)
-                cgroup_get_task_end(&iterator);
-
-        /* Hmm, no PID in this group? Then it is definitely empty */
-        if (r == ECGEOF)
-                return 1;
-
-        /* Some error? Let's return it */
-        if (r != 0)
-                return translate_error(r, errno);
-
-        /* It's not empty, and we are the only user, then it is
-         * definitely not empty */
-        if (b->only_us)
-                return 0;
-
-        /* There are PIDs in the group but we aren't the only users,
-         * hence we cannot say */
-        return -EAGAIN;
-}
-
-int cgroup_bonding_is_empty_list(CGroupBonding *first) {
-        CGroupBonding *b;
-
-        LIST_FOREACH(by_unit, b, first) {
-                int r;
-
-                if ((r = cgroup_bonding_is_empty(b)) < 0) {
-                        /* If this returned -EAGAIN, then we don't know if the
-                         * group is empty, so let's see if another group can
-                         * tell us */
-
-                        if (r != -EAGAIN)
-                                return r;
-                } else
-                        return r;
-        }
-
-        return -EAGAIN;
-}
-
-static int install_release_agent(Manager *m, const char *mount_point) {
-        char *p, *c, *sc;
-        int r;
-
-        assert(m);
-        assert(mount_point);
-
-        if (asprintf(&p, "%s/release_agent", mount_point) < 0)
-                return -ENOMEM;
-
-        if ((r = read_one_line_file(p, &c)) < 0) {
-                free(p);
-                return r;
-        }
-
-        sc = strstrip(c);
-
-        if (sc[0] == 0) {
-                if ((r = write_one_line_file(p, CGROUP_AGENT_PATH "\n" )) < 0) {
-                        free(p);
-                        free(c);
-                        return r;
-                }
-        } else if (!streq(sc, CGROUP_AGENT_PATH)) {
-                free(p);
-                free(c);
-                return -EEXIST;
-        }
-
-        free(c);
-        free(p);
-
-        if (asprintf(&p, "%s/notify_on_release", mount_point) < 0)
-                return -ENOMEM;
-
-        if ((r = read_one_line_file(p, &c)) < 0) {
-                free(p);
-                return r;
-        }
-
-        sc = strstrip(c);
-
-        if (streq(sc, "0")) {
-                if ((r = write_one_line_file(p, "1\n")) < 0) {
-                        free(p);
-                        free(c);
-                        return r;
-                }
-        } else if (!streq(sc, "1")) {
-                free(p);
-                free(c);
-                return -EIO;
-        }
-
-        free(p);
-        free(c);
-
-        return 0;
-}
-
-static int create_hierarchy_cgroup(Manager *m) {
-        struct cgroup *cg;
-        int r;
-
-        assert(m);
-
-        if (!(cg = cgroup_new_cgroup(m->cgroup_hierarchy)))
-                return -ENOMEM;
-
-        if (!(cgroup_add_controller(cg, m->cgroup_controller))) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if ((r = cgroup_create_cgroup(cg, true)) != 0) {
-                log_error("Failed to create cgroup hierarchy group: %s", cgroup_strerror(r));
-                r = translate_error(r, errno);
-                goto finish;
-        }
-
-        if ((r = cgroup_attach_task(cg)) != 0) {
-                log_error("Failed to add ourselves to hierarchy group: %s", cgroup_strerror(r));
-                r = translate_error(r, errno);
-                goto finish;
-        }
-
-        r = 0;
-
-finish:
-        cgroup_free(&cg);
-        return r;
-}
-
-int manager_setup_cgroup(Manager *m) {
-        char *mp, *cp;
-        int r;
-        pid_t pid;
-        char suffix[32];
-
-        assert(m);
-
-        if ((r = cgroup_init()) != 0) {
-                log_error("Failed to initialize libcg: %s", cgroup_strerror(r));
-                return translate_error(r, errno);
-        }
-
-        free(m->cgroup_controller);
-        if (!(m->cgroup_controller = strdup("debug")))
-                return -ENOMEM;
-
-        if ((r = cgroup_get_subsys_mount_point(m->cgroup_controller, &mp)))
-                return translate_error(r, errno);
-
-        pid = getpid();
-
-        if ((r = cgroup_get_current_controller_path(pid, m->cgroup_controller, &cp))) {
-                free(mp);
-                return translate_error(r, errno);
-        }
-
-        snprintf(suffix, sizeof(suffix), "/systemd-%u", (unsigned) pid);
-        char_array_0(suffix);
-
-        free(m->cgroup_hierarchy);
-
-        if (endswith(cp, suffix))
-                /* We probably got reexecuted and can continue to use our root cgroup */
-                m->cgroup_hierarchy = cp;
-        else {
-                /* We need a new root cgroup */
-
-                m->cgroup_hierarchy = NULL;
-                r = asprintf(&m->cgroup_hierarchy, "%s%s", streq(cp, "/") ? "" : cp, suffix);
-                free(cp);
-
-                if (r < 0) {
-                        free(mp);
-                        return -ENOMEM;
-                }
-        }
-
-        log_debug("Using cgroup controller <%s>, hierarchy mounted at <%s>, using root group <%s>.",
-                  m->cgroup_controller,
-                  mp,
-                  m->cgroup_hierarchy);
-
-        if ((r = install_release_agent(m, mp)) < 0)
-                log_warning("Failed to install release agent, ignoring: %s", strerror(-r));
-        else
-                log_debug("Installed release agent, or already installed.");
-
-        free(mp);
-
-        if ((r = create_hierarchy_cgroup(m)) < 0)
-                log_error("Failed to create root cgroup hierarchy: %s", strerror(-r));
-        else
-                log_debug("Created root group.");
-
-        return r;
-}
-
-int manager_shutdown_cgroup(Manager *m, bool delete) {
-        struct cgroup *cg;
-        int r;
-
-        assert(m);
-
-        if (!m->cgroup_hierarchy)
-                return 0;
-
-        if (!(cg = cgroup_new_cgroup(m->cgroup_hierarchy)))
-                return -ENOMEM;
-
-        if (!(cgroup_add_controller(cg, m->cgroup_controller))) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        /* Often enough we won't be able to delete the cgroup we
-         * ourselves are in, hence ignore all errors here */
-        if (delete)
-                cgroup_delete_cgroup_ext(cg, CGFLAG_DELETE_IGNORE_MIGRATION|CGFLAG_DELETE_RECURSIVE);
-        r = 0;
-
-finish:
-        cgroup_free(&cg);
-        return r;
-
-}
-
-int cgroup_notify_empty(Manager *m, const char *group) {
-        CGroupBonding *l, *b;
-
-        assert(m);
-        assert(group);
-
-        if (!(l = hashmap_get(m->cgroup_bondings, group)))
-                return 0;
-
-        LIST_FOREACH(by_path, b, l) {
-                int t;
-
-                if (!b->unit)
-                        continue;
-
-                if ((t = cgroup_bonding_is_empty_list(b)) < 0) {
-
-                        /* If we don't know, we don't know */
-                        if (t != -EAGAIN)
-                                log_warning("Failed to check whether cgroup is empty: %s", strerror(errno));
-
-                        continue;
-                }
-
-                if (t > 0)
-                        if (UNIT_VTABLE(b->unit)->cgroup_notify_empty)
-                                UNIT_VTABLE(b->unit)->cgroup_notify_empty(b->unit);
-        }
-
-        return 0;
-}
-
-CGroupBonding *cgroup_bonding_find_list(CGroupBonding *first, const char *controller) {
-        CGroupBonding *b;
-
-        assert(controller);
-
-        LIST_FOREACH(by_unit, b, first)
-                if (streq(b->controller, controller))
-                        return b;
-
-        return NULL;
-}
-
-char *cgroup_bonding_to_string(CGroupBonding *b) {
-        char *r;
-
-        assert(b);
-
-        if (asprintf(&r, "%s:%s", b->controller, b->path) < 0)
-                return NULL;
-
-        return r;
-}