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-rw-r--r--src/shared/Makefile.am2
-rw-r--r--src/shared/cgroup-util.c250
-rw-r--r--src/shared/cgroup-util.h51
3 files changed, 0 insertions, 303 deletions
diff --git a/src/shared/Makefile.am b/src/shared/Makefile.am
index 02bb294d30..b18ba192b2 100644
--- a/src/shared/Makefile.am
+++ b/src/shared/Makefile.am
@@ -5,7 +5,6 @@ AM_CPPFLAGS = \
-include $(top_builddir)/config.h
libudev_shared_la_SOURCES=\
- cgroup-util.c \
conf-files.c \
device-nodes.c \
dev-setup.c \
@@ -34,7 +33,6 @@ libudev_shared_la_SOURCES=\
virt.c
noinst_HEADERS = \
- cgroup-util.h \
conf-files.h \
def.h \
device-nodes.h \
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
deleted file mode 100644
index 326b75f763..0000000000
--- a/src/shared/cgroup-util.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/***
- This file is part of eudev, forked from systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/types.h>
-
-#include "cgroup-util.h"
-#include "set.h"
-#include "process-util.h"
-#include "path-util.h"
-
-int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
- _cleanup_free_ char *fs = NULL;
- FILE *f;
- int r;
-
- assert(_f);
-
- r = cg_get_path(controller, path, "cgroup.procs", &fs);
- if (r < 0)
- return r;
-
- f = fopen(fs, "re");
- if (!f)
- return -errno;
-
- *_f = f;
- return 0;
-}
-
-int cg_read_pid(FILE *f, pid_t *_pid) {
- unsigned long ul;
-
- /* Note that the cgroup.procs might contain duplicates! See
- * cgroups.txt for details. */
-
- assert(f);
- assert(_pid);
-
- errno = 0;
- if (fscanf(f, "%lu", &ul) != 1) {
-
- if (feof(f))
- return 0;
-
- return errno ? -errno : -EIO;
- }
-
- if (ul <= 0)
- return -EIO;
-
- *_pid = (pid_t) ul;
- return 1;
-}
-
-int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s) {
- _cleanup_set_free_ Set *allocated_set = NULL;
- bool done = false;
- int r, ret = 0;
- pid_t my_pid;
-
- assert(sig >= 0);
-
- /* This goes through the tasks list and kills them all. This
- * is repeated until no further processes are added to the
- * tasks list, to properly handle forking processes */
-
- if (!s) {
- s = allocated_set = set_new(NULL);
- if (!s)
- return -ENOMEM;
- }
-
- my_pid = getpid();
-
- do {
- _cleanup_fclose_ FILE *f = NULL;
- pid_t pid = 0;
- done = true;
-
- r = cg_enumerate_processes(controller, path, &f);
- if (r < 0) {
- if (ret >= 0 && r != -ENOENT)
- return r;
-
- return ret;
- }
-
- while ((r = cg_read_pid(f, &pid)) > 0) {
-
- if (ignore_self && pid == my_pid)
- continue;
-
- if (set_get(s, LONG_TO_PTR(pid)) == LONG_TO_PTR(pid))
- continue;
-
- /* If we haven't killed this process yet, kill
- * it */
- if (kill(pid, sig) < 0) {
- if (ret >= 0 && errno != ESRCH)
- ret = -errno;
- } else {
- if (sigcont && sig != SIGKILL)
- kill(pid, SIGCONT);
-
- if (ret == 0)
- ret = 1;
- }
-
- done = false;
-
- r = set_put(s, LONG_TO_PTR(pid));
- if (r < 0) {
- if (ret >= 0)
- return r;
-
- return ret;
- }
- }
-
- if (r < 0) {
- if (ret >= 0)
- return r;
-
- return ret;
- }
-
- /* 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);
-
- return ret;
-}
-
-static const char *normalize_controller(const char *controller) {
-
- assert(controller);
-
- if (streq(controller, SYSTEMD_CGROUP_CONTROLLER))
- return "systemd";
- else if (startswith(controller, "name="))
- return controller + 5;
- else
- return controller;
-}
-
-static int join_path(const char *controller, const char *path, const char *suffix, char **fs) {
- char *t = NULL;
-
- if (!isempty(controller)) {
- if (!isempty(path) && !isempty(suffix))
- t = strjoin("/sys/fs/cgroup/", controller, "/", path, "/", suffix, NULL);
- else if (!isempty(path))
- t = strjoin("/sys/fs/cgroup/", controller, "/", path, NULL);
- else if (!isempty(suffix))
- t = strjoin("/sys/fs/cgroup/", controller, "/", suffix, NULL);
- else
- t = strappend("/sys/fs/cgroup/", controller);
- } else {
- if (!isempty(path) && !isempty(suffix))
- t = strjoin(path, "/", suffix, NULL);
- else if (!isempty(path))
- t = strdup(path);
- else
- return -EINVAL;
- }
-
- if (!t)
- return -ENOMEM;
-
- *fs = path_kill_slashes(t);
- return 0;
-}
-
-int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs) {
- const char *p;
- static thread_local bool good = false;
-
- assert(fs);
-
- if (controller && !cg_controller_is_valid(controller, true))
- return -EINVAL;
-
- if (_unlikely_(!good)) {
- int r;
-
- r = path_is_mount_point("/sys/fs/cgroup", false);
- if (r < 0)
- return r;
- if (r == 0)
- return -ENOENT;
-
- /* Cache this to save a few stat()s */
- good = true;
- }
-
- p = controller ? normalize_controller(controller) : NULL;
-
- return join_path(p, path, suffix, fs);
-}
-
-#define CONTROLLER_VALID \
- DIGITS LETTERS \
- "_"
-
-bool cg_controller_is_valid(const char *p, bool allow_named) {
- const char *t, *s;
-
- if (!p)
- return false;
-
- if (allow_named) {
- s = startswith(p, "name=");
- if (s)
- p = s;
- }
-
- if (*p == 0 || *p == '_')
- return false;
-
- for (t = p; *t; t++)
- if (!strchr(CONTROLLER_VALID, *t))
- return false;
-
- if (t - p > FILENAME_MAX)
- return false;
-
- return true;
-}
diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h
deleted file mode 100644
index 5c219b204e..0000000000
--- a/src/shared/cgroup-util.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/***
- This file is part of eudev, forked from systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#pragma once
-
-#include <sys/types.h>
-#include <stdio.h>
-#include <dirent.h>
-
-#include "set.h"
-#include "def.h"
-
-/*
- * General rules:
- *
- * We accept named hierarchies in the syntax "foo" and "name=foo".
- *
- * We expect that named hierarchies do not conflict in name with a
- * kernel hierarchy, modulo the "name=" prefix.
- *
- * We always generate "normalized" controller names, i.e. without the
- * "name=" prefix.
- *
- * We require absolute cgroup paths. When returning, we will always
- * generate paths with multiple adjacent / removed.
- */
-
-int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
-int cg_read_pid(FILE *f, pid_t *_pid);
-
-int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s);
-
-int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs);
-
-bool cg_controller_is_valid(const char *p, bool allow_named);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-22 08:58:21 +0000