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author | Balbir Singh <balbir@linux.vnet.ibm.com> | 2008-05-24 11:23:08 +0000 |
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committer | Balbir Singh <balbir@linux.vnet.ibm.com> | 2008-05-24 11:23:08 +0000 |
commit | 9190c1241a381f610d52eb6413f793cfc8435ef2 (patch) | |
tree | 8ce4c7eaf494d353a4f626759e622d85a292e3fd | |
parent | d525ed7a91bc0255036902e02a02a575ca7e8b7f (diff) | |
download | libcg-9190c1241a381f610d52eb6413f793cfc8435ef2.tar.gz libcg-9190c1241a381f610d52eb6413f793cfc8435ef2.tar.xz libcg-9190c1241a381f610d52eb6413f793cfc8435ef2.zip |
Merged with balbir, all part of build automation
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/tags/v0.1b@52 4f4bb910-9a46-0410-90c8-c897d4f1cd53
30 files changed, 1 insertions, 11848 deletions
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TYPE can either be a short name for the system -type, such as `sun4', or a canonical name which has the form: - - CPU-COMPANY-SYSTEM - -where SYSTEM can have one of these forms: - - OS KERNEL-OS - - See the file `config.sub' for the possible values of each field. If -`config.sub' isn't included in this package, then this package doesn't -need to know the machine type. - - If you are _building_ compiler tools for cross-compiling, you should -use the option `--target=TYPE' to select the type of system they will -produce code for. - - If you want to _use_ a cross compiler, that generates code for a -platform different from the build platform, you should specify the -"host" platform (i.e., that on which the generated programs will -eventually be run) with `--host=TYPE'. - -Sharing Defaults -================ - -If you want to set default values for `configure' scripts to share, you -can create a site shell script called `config.site' that gives default -values for variables like `CC', `cache_file', and `prefix'. -`configure' looks for `PREFIX/share/config.site' if it exists, then -`PREFIX/etc/config.site' if it exists. Or, you can set the -`CONFIG_SITE' environment variable to the location of the site script. -A warning: not all `configure' scripts look for a site script. - -Defining Variables -================== - -Variables not defined in a site shell script can be set in the -environment passed to `configure'. However, some packages may run -configure again during the build, and the customized values of these -variables may be lost. In order to avoid this problem, you should set -them in the `configure' command line, using `VAR=value'. For example: - - ./configure CC=/usr/local2/bin/gcc - -causes the specified `gcc' to be used as the C compiler (unless it is -overridden in the site shell script). - -Unfortunately, this technique does not work for `CONFIG_SHELL' due to -an Autoconf bug. Until the bug is fixed you can use this workaround: - - CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash - -`configure' Invocation -====================== - -`configure' recognizes the following options to control how it operates. - -`--help' -`-h' - Print a summary of the options to `configure', and exit. - -`--version' -`-V' - Print the version of Autoconf used to generate the `configure' - script, and exit. - -`--cache-file=FILE' - Enable the cache: use and save the results of the tests in FILE, - traditionally `config.cache'. FILE defaults to `/dev/null' to - disable caching. - -`--config-cache' -`-C' - Alias for `--cache-file=config.cache'. - -`--quiet' -`--silent' -`-q' - Do not print messages saying which checks are being made. To - suppress all normal output, redirect it to `/dev/null' (any error - messages will still be shown). - -`--srcdir=DIR' - Look for the package's source code in directory DIR. Usually - `configure' can determine that directory automatically. - -`configure' also accepts some other, not widely useful, options. Run -`configure --help' for more details. - diff --git a/balbir/Makefile b/balbir/Makefile deleted file mode 100644 index b9f4591..0000000 --- a/balbir/Makefile +++ /dev/null @@ -1,59 +0,0 @@ -# -# Copyright IBM Corporation. 2007 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -YACC_DEBUG=-t -DEBUG=-DDEBUG -INC=-I. -LIBS= -lcgroup -LDFLAGS= -YACC=byacc -LEX=flex -bindir=${exec_prefix}/bin -libdir=${exec_prefix}/lib -includedir=${prefix}/include -prefix=/usr -exec_prefix=${prefix} -INSTALL=install -INSTALL_DATA=${INSTALL} -m 644 -PACKAGE_VERSION=0.1b -CFLAGS=-g -O2 $(INC) -DPACKAGE_VERSION=$(PACKAGE_VERSION) -VERSION=1 - -all: libcgroup.so - -cgconfig: libcgroup.so config.c y.tab.c lex.yy.c libcgroup.h file-ops.c - $(CC) $(CFLAGS) -o $@ y.tab.c lex.yy.c config.c file-ops.c $(LDFLAGS) $(LIBS) - -y.tab.c: parse.y lex.yy.c - $(YACC) -v -d parse.y - -lex.yy.c: lex.l - $(LEX) lex.l - -libcgroup.so: api.c libcgroup.h - $(CXX) $(CFLAGS) -shared -fPIC -o $@ api.c - ln -sf $@ $@.$(VERSION) - -install: libcgroup.so - $(INSTALL_DATA) -D libcgroup.h $(DESTDIR)$(includedir)/libcgroup.h - $(INSTALL) -D libcgroup.so $(DESTDIR)$(libdir)/libcgroup-$(PACKAGE_VERSION).so - ln -sf libcgroup-$(PACKAGE_VERSION).so $(DESTDIR)$(libdir)/libcgroup.so.$(VERSION) - ln -sf libcgroup.so.$(VERSION) $(DESTDIR)$(libdir)/libcgroup.so - -uninstall: libcgroup.so - rm -f $(DESTDIR)$(includedir)/libcgroup.h - rm -f $(DESTDIR)$(libdir)/libcgroup.so - rm -f $(DESTDIR)$(libdir)/libcgroup.so.$(VERSION) - rm -f $(DESTDIR)$(libdir)/libcgroup-$(PACKAGE_VERSION).so - -clean: - \rm -f y.tab.c y.tab.h lex.yy.c y.output cgconfig libcgroup.so diff --git a/balbir/Makefile.in b/balbir/Makefile.in deleted file mode 100644 index 99b7ab6..0000000 --- a/balbir/Makefile.in +++ /dev/null @@ -1,59 +0,0 @@ -# -# Copyright IBM Corporation. 2007 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -YACC_DEBUG=-t -DEBUG=-DDEBUG -INC=-I. -LIBS= -lcgroup -LDFLAGS=@LDFLAGS@ -YACC=@YACC@ -LEX=@LEX@ -bindir=@bindir@ -libdir=@libdir@ -includedir=@includedir@ -prefix=@prefix@ -exec_prefix=@exec_prefix@ -INSTALL=@INSTALL@ -INSTALL_DATA=@INSTALL_DATA@ -PACKAGE_VERSION=@PACKAGE_VERSION@ -CFLAGS=@CFLAGS@ $(INC) -DPACKAGE_VERSION=$(PACKAGE_VERSION) -VERSION=1 - -all: libcgroup.so - -cgconfig: libcgroup.so config.c y.tab.c lex.yy.c libcgroup.h file-ops.c - $(CC) $(CFLAGS) -o $@ y.tab.c lex.yy.c config.c file-ops.c $(LDFLAGS) $(LIBS) - -y.tab.c: parse.y lex.yy.c - $(YACC) -v -d parse.y - -lex.yy.c: lex.l - $(LEX) lex.l - -libcgroup.so: api.c libcgroup.h - $(CXX) $(CFLAGS) -shared -fPIC -o $@ api.c - ln -sf $@ $@.$(VERSION) - -install: libcgroup.so - $(INSTALL_DATA) -D libcgroup.h $(DESTDIR)$(includedir)/libcgroup.h - $(INSTALL) -D libcgroup.so $(DESTDIR)$(libdir)/libcgroup-$(PACKAGE_VERSION).so - ln -sf libcgroup-$(PACKAGE_VERSION).so $(DESTDIR)$(libdir)/libcgroup.so.$(VERSION) - ln -sf libcgroup.so.$(VERSION) $(DESTDIR)$(libdir)/libcgroup.so - -uninstall: libcgroup.so - rm -f $(DESTDIR)$(includedir)/libcgroup.h - rm -f $(DESTDIR)$(libdir)/libcgroup.so - rm -f $(DESTDIR)$(libdir)/libcgroup.so.$(VERSION) - rm -f $(DESTDIR)$(libdir)/libcgroup-$(PACKAGE_VERSION).so - -clean: - \rm -f y.tab.c y.tab.h lex.yy.c y.output cgconfig libcgroup.so diff --git a/balbir/api.c b/balbir/api.c deleted file mode 100644 index fce70a7..0000000 --- a/balbir/api.c +++ /dev/null @@ -1,556 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Author: Dhaval Giani <dhaval@linux.vnet.ibm.com> - * Author: Balbir Singh <balbir@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * TODOs: - * 1. Convert comments to Docbook style. - * 2. Add more APIs for the control groups. - * 3. Handle the configuration related APIs. - * 4. Error handling. - * - * Code initiated and designed by Dhaval Giani. All faults are most likely - * his mistake. - */ - -#include <errno.h> -#include <libcgroup.h> -#include <libcgroup-internal.h> -#include <mntent.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/syscall.h> -#include <unistd.h> -#include <fts.h> - -#ifndef PACKAGE_VERSION -#define PACKAGE_VERSION 0.01 -#endif - -#define VERSION(ver) #ver - -/* - * Remember to bump this up for major API changes. - */ -const static char cg_version[] = VERSION(PACKAGE_VERSION); - -struct cg_mount_table_s cg_mount_table[CG_CONTROLLER_MAX]; - -static int cg_chown_file(FTS *fts, FTSENT *ent, uid_t owner, gid_t group) -{ - int ret = 0; - const char *filename = fts->fts_path; - dbg("seeing file %s\n", filename); - switch (ent->fts_info) { - case FTS_ERR: - errno = ent->fts_errno; - break; - case FTS_D: - case FTS_DC: - case FTS_NSOK: - case FTS_NS: - case FTS_DNR: - case FTS_DP: - case FTS_F: - case FTS_DEFAULT: - ret = chown(filename, owner, group); - break; - } - return ret; -} - -/* - * TODO: Need to decide a better place to put this function. - */ -static int cg_chown_recursive(char **path, uid_t owner, gid_t group) -{ - int ret = 0; - dbg("path is %s\n", *path); - FTS *fts = fts_open(path, FTS_PHYSICAL | FTS_NOCHDIR | - FTS_NOSTAT, NULL); - while (1) { - FTSENT *ent; - ent = fts_read(fts); - if (!ent) { - dbg("fts_read failed\n"); - break; - } - ret = cg_chown_file(fts, ent, owner, group); - } - fts_close(fts); - return ret; -} - -/** - * cgroup_init(), initializes the MOUNT_POINT. - * This code is not currently thread safe (hint: getmntent is not thread safe). - * This API is likely to change in the future to push state back to the caller - * to achieve thread safety. The code currently supports just one mount point. - * Complain if the cgroup filesystem controllers are bound to different mount - * points. - */ -int cgroup_init() -{ - FILE *proc_mount; - struct mntent *ent, *found_ent = NULL; - int found_mnt = 0; - int ret = 0; - char *mntent_tok; - static char *controllers[CG_CONTROLLER_MAX]; - FILE *proc_cgroup; - char subsys_name[FILENAME_MAX]; - int hierarchy, num_cgroups, enabled; - int i=0; - char *mntopt; - int err; - - proc_cgroup = fopen("/proc/cgroups", "r"); - - if (!proc_cgroup) - return EIO; - - /* - * The first line of the file has stuff we are not interested in. - * So just read it and discard the information. - * - * XX: fix the size for fgets - */ - fgets(subsys_name, FILENAME_MAX, proc_cgroup); - while (!feof(proc_cgroup)) { - err = fscanf(proc_cgroup, "%s %d %d %d", subsys_name, - &hierarchy, &num_cgroups, &enabled); - if (err < 0) - break; - controllers[i] = (char *)malloc(strlen(subsys_name)); - strcpy(controllers[i], subsys_name); - i++; - } - controllers[i] = NULL; - fclose(proc_cgroup); - - proc_mount = fopen("/proc/mounts", "r"); - if (proc_mount == NULL) { - return EIO; - } - - while ((ent = getmntent(proc_mount)) != NULL) { - if (!strncmp(ent->mnt_type, "cgroup", strlen("cgroup"))) { - for (i = 0; controllers[i] != NULL; i++) { - mntopt = hasmntopt(ent, controllers[i]); - if (mntopt && - strcmp(mntopt, controllers[i]) == 0) { - dbg("matched %s:%s\n", mntopt, - controllers[i]); - strcpy(cg_mount_table[found_mnt].name, - controllers[i]); - strcpy(cg_mount_table[found_mnt].path, - ent->mnt_dir); - dbg("Found cgroup option %s, " - " count %d\n", - ent->mnt_opts, found_mnt); - found_mnt++; - } - } - } - } - - if (!found_mnt) { - cg_mount_table[0].name[0] = '\0'; - return ECGROUPNOTMOUNTED; - } - - found_mnt++; - cg_mount_table[found_mnt].name[0] = '\0'; - - - fclose(proc_mount); - return ret; -} - -static char **get_mounted_controllers(char *mountpoint) -{ - char **controllers; - int i, j; - - i = 0; - j = 0; - - controllers = (char **) malloc(sizeof(char *) * CG_CONTROLLER_MAX); - - for (i = 0; i < CG_CONTROLLER_MAX && cg_mount_table[i].name != NULL; - i++) { - if (strcmp(cg_mount_table[i].name, mountpoint) == 0) { - controllers[j] = (char *)malloc(sizeof(char) * - FILENAME_MAX); - strcpy(controllers[j], cg_mount_table[i].name); - j++; - } - } - controllers[j] = (char *)malloc(sizeof(char) * FILENAME_MAX); - controllers[j][0] = '\0'; - - return controllers; -} - -static int cg_test_mounted_fs() -{ - FILE *proc_mount; - struct mntent *ent; - - proc_mount = fopen("/proc/mounts", "r"); - if (proc_mount == NULL) { - return -1; - } - ent = getmntent(proc_mount); - - while (strcmp(ent->mnt_type, "cgroup") !=0) { - ent = getmntent(proc_mount); - if (ent == NULL) - return 0; - } - fclose(proc_mount); - return 1; -} - -static inline pid_t cg_gettid() -{ - return syscall(__NR_gettid); -} - -static char* cg_build_path(char *name, char *path, char *type) -{ - int i; - for (i = 0; cg_mount_table[i].name[0] != '\0'; i++) { - if (strcmp(cg_mount_table[i].name, type) == 0) { - strcpy(path, cg_mount_table[i].path); - strcat(path, "/"); - strcat(path, name); - strcat(path, "/"); - return path; - } - } - return NULL; -} - -/** cgroup_attach_task_pid is used to assign tasks to a cgroup. - * struct cgroup *cgroup: The cgroup to assign the thread to. - * pid_t tid: The thread to be assigned to the cgroup. - * - * returns 0 on success. - * returns ECGROUPNOTOWNER if the caller does not have access to the cgroup. - * returns ECGROUPNOTALLOWED for other causes of failure. - */ -int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid) -{ - char path[FILENAME_MAX]; - FILE *tasks; - int i; - - if(!cgroup) - { - for(i = 0; i < CG_CONTROLLER_MAX && - cg_mount_table[i].name[0]!='\0'; i++) { - if (!cg_build_path(cgroup->name, path, NULL)) - continue; - strcat(path, "/tasks"); - - tasks = fopen(path, "w"); - if (!tasks) { - switch (errno) { - case EPERM: - return ECGROUPNOTOWNER; - default: - return ECGROUPNOTALLOWED; - } - } - fprintf(tasks, "%d", tid); - fclose(tasks); - } - } else { - for( i = 0; i <= CG_CONTROLLER_MAX && - cgroup->controller[i] != NULL ; i++) { - if (!cg_build_path(cgroup->name, path, - cgroup->controller[i]->name)) - continue; - - strcat(path, "/tasks"); - - tasks = fopen(path, "w"); - if (!tasks) { - switch (errno) { - case EPERM: - return ECGROUPNOTOWNER; - default: - return ECGROUPNOTALLOWED; - } - } - fprintf(tasks, "%d", tid); - fclose(tasks); - } - } - return 0; - -} - -/** cgroup_attach_task is used to attach the current thread to a cgroup. - * struct cgroup *cgroup: The cgroup to assign the current thread to. - * - * See cg_attach_task_pid for return values. - */ -int cgroup_attach_task(struct cgroup *cgroup) -{ - pid_t tid = cg_gettid(); - int error; - - error = cgroup_attach_task_pid(cgroup, tid); - - return error; -} - -/* - * create_control_group() - * This is the basic function used to create the control group. This function - * just makes the group. It does not set any permissions, or any control values. - * The argument path is the fully qualified path name to make it generic. - */ -static int cg_create_control_group(char *path) -{ - int error; - if (!cg_test_mounted_fs()) - return ECGROUPNOTMOUNTED; - error = mkdir(path, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH); - if (error) { - switch(errno) { - case EPERM: - return ECGROUPNOTOWNER; - default: - return ECGROUPNOTALLOWED; - } - } - return error; -} - -/* - * set_control_value() - * This is the low level function for putting in a value in a control file. - * This function takes in the complete path and sets the value in val in that - * file. - */ -static int cg_set_control_value(char *path, char *val) -{ - int error; - FILE *control_file; - if (!cg_test_mounted_fs()) - return ECGROUPNOTMOUNTED; - - control_file = fopen(path, "a"); - - if (!control_file) { - if (errno == EPERM) { - /* - * We need to set the correct error value, does the - * group exist but we don't have the subsystem - * mounted at that point, or is it that the group - * does not exist. So we check if the tasks file - * exist. Before that, we need to extract the path. - */ - int len = strlen(path); - - while (*(path+len) != '/') - len--; - *(path+len+1) = '\0'; - strcat(path, "tasks"); - control_file = fopen(path, "r"); - if (!control_file) { - if (errno == ENOENT) - return ECGROUPSUBSYSNOTMOUNTED; - } - fclose(control_file); - return ECGROUPNOTALLOWED; - } - return errno; - } - - fprintf(control_file, "%s", val); - fclose(control_file); - return 0; -} - -/** cgroup_modify_cgroup modifies the cgroup control files. - * struct cgroup *cgroup: The name will be the cgroup to be modified. - * The values will be the values to be modified, those not mentioned - * in the structure will not be modified. - * - * The uids cannot be modified yet. - * - * returns 0 on success. - * - */ - -int cgroup_modify_cgroup(struct cgroup *cgroup) -{ - char path[FILENAME_MAX], base[FILENAME_MAX]; - int i; - int error; - - for (i = 0; i < CG_CONTROLLER_MAX && cgroup->controller[i]; - i++, strcpy(path, base)) { - int j; - if (!cg_build_path(cgroup->name, base, - cgroup->controller[i]->name)) - continue; - for(j = 0; j < CG_NV_MAX && - cgroup->controller[i]->values[j]; - j++, strcpy(path, base)) { - strcat(path, cgroup->controller[i]->values[j]->name); - error = cg_set_control_value(path, - cgroup->controller[i]->values[j]->value); - if (error) - goto err; - } - } - return 0; -err: - return error; - -} - -/** cgroup_create_cgroup creates a new control group. - * struct cgroup *cgroup: The control group to be created - * - * returns 0 on success. We recommend calling cg_delete_cgroup - * if this routine fails. That should do the cleanup operation. - */ -int cgroup_create_cgroup(struct cgroup *cgroup, int ignore_ownership) -{ - char *fts_path[2], base[FILENAME_MAX], *path; - int i, j, k; - int error = 0; - - fts_path[0] = (char *)malloc(FILENAME_MAX); - if (!fts_path[0]) - return ENOMEM; - fts_path[1] = NULL; - path = fts_path[0]; - - /* - * XX: One important test to be done is to check, if you have multiple - * subsystems mounted at one point, all of them *have* be on the cgroup - * data structure. If not, we fail. - */ - for (k = 0; k < CG_CONTROLLER_MAX && cgroup->controller[k]; k++) { - path[0] = '\0'; - - if (!cg_build_path(cgroup->name, path, - cgroup->controller[k]->name)) - continue; - - dbg("path is %s\n", path); - error = cg_create_control_group(path); - if (error) - goto err; - - strcpy(base, path); - - if (!ignore_ownership) - error = cg_chown_recursive(fts_path, - cgroup->control_uid, cgroup->control_gid); - - if (error) - goto err; - - for (j = 0; j < CG_NV_MAX && cgroup->controller[k]->values[j]; - j++, strcpy(path, base)) { - strcat(path, cgroup->controller[k]->values[j]->name); - error = cg_set_control_value(path, - cgroup->controller[k]->values[j]->value); - /* - * Should we undo, what we've done in the loops above? - */ - if (error) - goto err; - } - - if (!ignore_ownership) { - strcpy(path, base); - strcat(path, "/tasks"); - chown(path, cgroup->tasks_uid, cgroup->tasks_gid); - } - } - -err: - free(path); - return error; -} - -/** cgroup_delete cgroup deletes a control group. - * struct cgroup *cgroup takes the group which is to be deleted. - * - * returns 0 on success. - */ -int cgroup_delete_cgroup(struct cgroup *cgroup, int ignore_migration) -{ - FILE *delete_tasks, *base_tasks = NULL; - int tids; - char path[FILENAME_MAX]; - int error = ECGROUPNOTALLOWED; - int i; - - for (i = 0; i < CG_CONTROLLER_MAX && cgroup->controller; i++) { - if (!cg_build_path(cgroup->name, path, - cgroup->controller[i]->name)) - continue; - strcat(path, "../tasks"); - - base_tasks = fopen(path, "w"); - if (!base_tasks) - goto base_open_err; - - if (!cg_build_path(cgroup->name, path, - cgroup->controller[i]->name)) - continue; - - strcat(path, "tasks"); - - delete_tasks = fopen(path, "r"); - if (!delete_tasks) - goto del_open_err; - - while (!feof(delete_tasks)) { - fscanf(delete_tasks, "%d", &tids); - fprintf(base_tasks, "%d", tids); - } - - if (!cg_build_path(cgroup->name, path, - cgroup->controller[i]->name)) - continue; - error = rmdir(path); - - fclose(delete_tasks); - } -del_open_err: - if (base_tasks) - fclose(base_tasks); -base_open_err: - if (ignore_migration) { - for (i = 0; cgroup->controller[i] != NULL; i++) { - if (!cg_build_path(cgroup->name, path, - cgroup->controller[i]->name)) - continue; - error = rmdir(path); - } - } - return error; -} diff --git a/balbir/config.c b/balbir/config.c deleted file mode 100644 index bed45ce..0000000 --- a/balbir/config.c +++ /dev/null @@ -1,704 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Authors: Balbir Singh <balbir@linux.vnet.ibm.com> - * Dhaval Giani <dhaval@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * TODOs: - * 1. Implement our own hashing scheme - * 2. Add namespace support - * 3. Add support for parsing cgroup filesystem and creating a - * config out of it. - * - * Code initiated and designed by Balbir Singh. All faults are most likely - * his mistake. - */ - -#include <assert.h> -#include <dirent.h> -#include <errno.h> -#include <grp.h> -#include <libcgroup.h> -#include <limits.h> -#include <pwd.h> -#include <search.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/types.h> - -extern FILE *yyin; -extern int yyparse(void); -extern int yydebug; -extern int line_no; -extern int verbose; - -struct hsearch_data group_hash; -struct list_of_names *group_list; -struct mount_table *mount_table; - -const char library_ver[] = "0.01"; -const char cg_filesystem[] = "cgroup"; - -struct cg_group *current_group; - -const char *cg_controller_names[] = { - "cpu", - NULL, -}; - -/* - * File traversal routines require the maximum number of open file - * descriptors to be specified - */ -const int cg_max_openfd = 20; - -/* - * Insert the group into the list of group names we maintain. This helps - * us cleanup nicely - */ -int cg_insert_into_group_list(const char *name) -{ - struct list_of_names *tmp, *curr; - - tmp = malloc(sizeof(*tmp)); - if (!tmp) - return 0; - tmp->next = NULL; - tmp->name = (char *)name; - - if (!group_list) { - group_list = tmp; - return 1; - } - curr = group_list; - while (curr->next) - curr = curr->next; - - curr->next = tmp; - return 1; -} - -/* - * Cleanup the group list. We walk the group list and free the entries in the - * hash tables and controller specific entries. - */ -int cg_cleanup_group_list(void) -{ - struct list_of_names *curr = group_list, *tmp; - ENTRY item, *found_item; - int ret; - struct cg_group *cg_group; - - while (curr) { - tmp = curr; - curr = curr->next; - item.key = tmp->name; - ret = hsearch_r(item, FIND, &found_item, &group_hash); - if (!ret) { - printf("Most likely a bug in the code\n"); - continue; - } - /* - * Free the name and it's value - */ - free(tmp->name); - cg_group = (struct cg_group *)found_item->data; - /* - * Controller specific cleanup - */ - if (cg_group->cpu_config.shares) - free(cg_group->cpu_config.shares); - - free(found_item->data); - } - - return 1; -} - -/* - * Find and walk the mount_table structures to find the specified controller - * name. This routine is *NOT* thread safe. - */ -struct mount_table *cg_find_mount_info(const char *controller_name) -{ - struct mount_table *curr = mount_table; - char *str; - - while (curr) { - str = curr->options; - if (!str) - return NULL; - - str = strtok(curr->options, ","); - do { - if (!strncmp(str, controller_name, strlen(str))) - return curr; - str = strtok(NULL, ","); - } while(str); - curr = curr->next; - } - return NULL; -} - -int cg_cpu_controller_settings(struct cg_group *cg_group, - const char *group_path) -{ - int ret = 1; - char *shares_file; - - shares_file = malloc(strlen(group_path) + strlen("/cpu.shares") + 1); - if (!shares_file) - return 0; - - strncpy(shares_file, group_path, strlen(group_path)); - shares_file = strncat(shares_file, "/cpu.shares", - strlen("/cpu.shares")); - dbg("shares file is %s\n", shares_file); - if (cg_group->cpu_config.shares) { - FILE *fd = fopen(shares_file, "rw+"); - if (!fd) - goto cleanup_shares; - /* - * Assume that one write will do it for us - */ - fwrite(cg_group->cpu_config.shares, - strlen(cg_group->cpu_config.shares), 1, fd); - fclose(fd); - } -cleanup_shares: - free(shares_file); - return ret; -} - -int cg_controller_handle_option(struct cg_group *cg_group, - const char *cg_controller_name, - const char *group_path) -{ - int ret = 0; - if (!strncmp(cg_controller_name, "cpu", strlen("cpu"))) { - ret = cg_cpu_controller_settings(cg_group, group_path); - } else - assert(0); - return ret; -} - -int cg_create_group(struct cg_group *cg_group) -{ - int i, ret; - struct mount_table *mount_info; - char *group_path, *tasks_file, *shares_file; - - dbg("found group %s\n", cg_group->name); - - for (i = 0; cg_controller_names[i]; i++) { - - /* - * Find the mount point related information - */ - mount_info = cg_find_mount_info(cg_controller_names[i]); - dbg("mount_info for controller %s:%s\n", - mount_info->mount_point, cg_controller_names[i]); - if (!mount_info) - return 0; - - /* - * TODO: Namespace support is most likely going to be - * plugged in here - */ - - /* - * Find the path to the group directory - */ - group_path = cg_build_group_path(cg_group, mount_info); - if (!group_path) - goto cleanup_group; - - /* - * Create the specified directory. Errors are ignored. - * If the directory already exists, we are most likely - * OK - */ - ret = cg_make_directory(cg_group, group_path); - if (!ret && (errno != EEXIST)) - goto cleanup_dir; - - /* - * Find the tasks file, should probably be encapsulated - * like we encapsulate cg_build_group_path - */ - tasks_file = malloc(strlen(group_path) + strlen("/tasks") + 1); - if (!tasks_file) - goto cleanup_dir; - strncpy(tasks_file, group_path, strlen(group_path)); - tasks_file = strncat(tasks_file, "/tasks", strlen("/tasks")); - dbg("tasks file is %s\n", tasks_file); - - /* - * Assign task file ownership - */ - ret = chown(tasks_file, cg_group->tasks_uid, - cg_group->tasks_gid); - if (ret < 0) - goto cleanup_perm; - - /* - * Controller specific work, errors are not fatal. - */ - cg_controller_handle_option(cg_group, cg_controller_names[i], - group_path); - free(tasks_file); - free(group_path); - } - return 1; -cleanup_perm: - rmdir(group_path); -cleanup_dir: - free(group_path); -cleanup_group: - return 0; -} - -/* - * Go ahead and create the groups in the filesystem. This routine will need - * to be revisited everytime new controllers are added. - */ -int cg_create_groups(void) -{ - struct list_of_names *curr = group_list, *tmp; - ENTRY item, *found_item; - struct cg_group *cg_group; - int ret = 1; - - while (curr) { - tmp = curr; - curr = curr->next; - item.key = tmp->name; - ret = hsearch_r(item, FIND, &found_item, &group_hash); - if (!ret) - return 0; - cg_group = (struct cg_group *)found_item->data; - ret = cg_create_group(cg_group); - if (!ret) - break; - } - - return ret; -} - -/* - * Go ahead and create the groups in the filesystem. This routine will need - * to be revisited everytime new controllers are added. - */ -int cg_destroy_groups(void) -{ - struct list_of_names *curr = group_list, *tmp; - ENTRY item, *found_item; - struct cg_group *cg_group; - int ret; - struct mount_table *mount_info; - char *group_path; - - while (curr) { - tmp = curr; - curr = curr->next; - item.key = tmp->name; - ret = hsearch_r(item, FIND, &found_item, &group_hash); - if (!ret) - return 0; - cg_group = (struct cg_group *)found_item->data; - mount_info = cg_find_mount_info("cpu"); - dbg("mount_info for cpu %s\n", mount_info->mount_point); - if (!mount_info) - return 0; - group_path = malloc(strlen(mount_info->mount_point) + - strlen(cg_group->name) + 2); - if (!group_path) - return 0; - strncpy(group_path, mount_info->mount_point, - strlen(mount_info->mount_point) + 1); - dbg("group_path is %s\n", group_path); - strncat(group_path, "/", strlen("/")); - strncat(group_path, cg_group->name, strlen(cg_group->name)); - dbg("group_path is %s\n", group_path); - /* - * We might strategically add migrate tasks here, so that - * rmdir is successful. TODO: Later - */ - ret = rmdir(group_path); - if (ret < 0) - goto err; - } - - return 1; -err: - free(group_path); - return 0; -} -/* - * The cg_get_current_group routine is used by the parser to figure out - * the current group that is being built and fill it in with the information - * as it parses through the configuration file - */ -struct cg_group *cg_get_current_group(void) -{ - if (!current_group) - current_group = calloc(1, sizeof(*current_group)); - - return current_group; -} - -/* - * This routine should be invoked when the current group being parsed is - * completely parsed - */ -void cg_put_current_group(void) -{ - /* - * NOTE: we do not free the group, the group is installed into the - * hash table, the cleanup routine will do the freeing of the group - */ - current_group = NULL; -} - -int cg_insert_group(const char *group_name) -{ - struct cg_group *cg_group = cg_get_current_group(); - ENTRY item, *found_item; - int ret; - - if (!cg_group) - return 0; - /* - * Dont' copy the name over, just point to it - */ - cg_group->name = (char *)group_name; - item.key = (char *)group_name; - item.data = cg_group; - dbg("Inserting %s into hash table\n", group_name); - ret = hsearch_r(item, ENTER, &found_item, &group_hash); - if (!ret) { - if (found_item) - errno = EEXIST; - errno = ENOMEM; - goto err; - } - ret = cg_insert_into_group_list(group_name); - if (!ret) - goto err; - dbg("Inserted %s into hash and list\n", group_name); - cg_put_current_group(); - return 1; -err: - cg_cleanup_group_list(); - return 0; -} - -/* - * Because of the way parsing works (bottom-up, shift-reduce), we don't - * know the name of the controller yet. Compilers build an AST and use - * a symbol table to deal with this problem. This code does simple things - * like concatinating strings and passing them upwards. This routine is - * *NOT* thread safe. - * - * This code will need modification everytime new controller support is - * added. - */ -int cg_parse_controller_options(char *controller, char *name_value) -{ - struct cg_group *cg_group = cg_get_current_group(); - char *name, *value; - - if (!cg_group) - return 0; - - if (!strncmp(controller, "cpu", strlen("cpu"))) { - name = strtok(name_value, " "); - value = strtok(NULL, " "); - if (!strncmp(name, "cpu.shares", strlen("cpu.shares"))) - cg_group->cpu_config.shares = strdup(value); - else { - free(controller); - free(name_value); - return 0; - } - dbg("cpu name %s value %s\n", name, value); - } else { - return 0; - } - free(controller); - free(name_value); - return 1; -} - -/* - * Convert the uid/gid field and supplied value to appropriate task - * permissions. This routine is *NOT* thread safe. - */ -int cg_group_task_perm(char *perm_type, char *value) -{ - struct cg_group *cg_group = cg_get_current_group(); - struct passwd *pw; - struct group *group; - long val = atoi(value); - if (!strncmp(perm_type, "uid", strlen("uid"))) { - if (!val) { /* We got the identifier as a name */ - pw = getpwnam(value); - if (!pw) { - free(perm_type); - free(value); - return 0; - } else { - cg_group->tasks_uid = pw->pw_uid; - } - } else { - cg_group->tasks_uid = val; - } - dbg("TASKS %s: %d\n", perm_type, cg_group->tasks_uid); - } - if (!strncmp(perm_type, "gid", strlen("gid"))) { - if (!val) { /* We got the identifier as a name */ - group = getgrnam(value); - if (!group) { - free(perm_type); - free(value); - return 0; - } else { - cg_group->tasks_gid = group->gr_gid; - } - } else { - cg_group->tasks_gid = val; - } - dbg("TASKS %s: %d\n", perm_type, cg_group->tasks_gid); - } - free(perm_type); - free(value); - return 1; -} - -int cg_group_admin_perm(char *perm_type, char *value) -{ - struct cg_group *cg_group = cg_get_current_group(); - struct passwd *pw; - struct group *group; - long val = atoi(value); - if (!strncmp(perm_type, "uid", strlen("uid"))) { - if (!val) { /* We got the identifier as a name */ - pw = getpwnam(value); - if (!pw) { - free(perm_type); - free(value); - return 0; - } else { - cg_group->admin_uid = pw->pw_uid; - } - } else { - cg_group->admin_uid = val; - } - dbg("ADMIN %s: %d\n", perm_type, cg_group->admin_uid); - } - if (!strncmp(perm_type, "gid", strlen("gid"))) { - if (!val) { /* We got the identifier as a name */ - group = getgrnam(value); - if (!group) { - free(perm_type); - free(value); - return 0; - } else { - cg_group->admin_gid = group->gr_gid; - } - } else { - cg_group->admin_gid = val; - } - dbg("ADMIN %s: %d\n", perm_type, - cg_group->admin_gid); - } - free(perm_type); - free(value); - return 1; -} - -/* - * We maintain a hash table. The group hash table maintains the parameters for - * each group, including the parameters for each controller - * - * TODO: Make the initialization a run time configuration parameter - */ -int cg_init_group_and_mount_info(void) -{ - int ret; - - group_list = NULL; - mount_table = NULL; - current_group = NULL; - - ret = hcreate_r(MAX_GROUP_ELEMENTS, &group_hash); - if (!ret) - return 0; - return 1; -} - -/* - * This routine should be called only once all elements of the hash table have - * been freed. Otherwise, we'll end up with a memory leak. - */ -void cg_destroy_group_and_mount_info(void) -{ - hdestroy_r(&group_hash); - group_list = NULL; - mount_table = NULL; - current_group = NULL; -} - -/* - * Insert a name, mount_point pair into the mount_table data structure - * TODO: Validate names and mount points - */ -int cg_insert_into_mount_table(const char *name, const char *mount_point) -{ - struct mount_table *tmp, *prev = mount_table; - - while (prev && prev->next != NULL && - (strncmp(mount_point, prev->mount_point, strlen(mount_point)))) - prev = prev->next; - - if (prev && - !(strncmp(mount_point, prev->mount_point, strlen(mount_point)))) { - prev->options = realloc(prev->options, strlen(prev->options) - + strlen(name) + 2); - if (!prev->options) - return 0; - strncat(prev->options, ",", strlen(",")); - strncat(prev->options, name, strlen(name)); - dbg("options %s: mount_point %s\n", prev->options, - prev->mount_point); - return 1; - } - - tmp = malloc(sizeof(*tmp)); - if (!tmp) - return 0; - - tmp->next = NULL; - tmp->mount_point = (char *)mount_point; - tmp->options = (char *)name; - dbg("options %s: mount_point %s\n", tmp->options, tmp->mount_point); - - if (!prev) { - mount_table = tmp; - return 1; - } else { - prev->next = tmp; - } - - return 1; -} - -void cg_cleanup_mount_table(void) -{ - struct mount_table *curr = mount_table, *tmp; - - while (curr) { - tmp = curr; - curr = curr->next; - tmp->next = NULL; - - /* - * Some of this data might have been allocated by the lexer - * while parsing tokens - */ - free(tmp->mount_point); - free(tmp->options); - - free(tmp); - } -} - -int cg_load_config(const char *pathname) -{ - yyin = fopen(pathname, "rw"); - if (!yyin) { - dbg("Failed to open file %s\n", pathname); - return 0; - } - - if (!cg_init_group_and_mount_info()) - return 0; - - if (yyparse() != 0) { - dbg("Failed to parse file %s\n", pathname); - return 0; - } - - if (!cg_mount_controllers()) - goto err_mnt; - if (!cg_create_groups()) - goto err_grp; - - fclose(yyin); - return 1; -err_grp: - cg_destroy_groups(); - cg_cleanup_group_list(); -err_mnt: - cg_unmount_controllers(); - cg_cleanup_mount_table(); - fclose(yyin); - return 0; -} - -void cg_unload_current_config(void) -{ - cg_destroy_groups(); - cg_cleanup_group_list(); - cg_unmount_controllers(); - cg_cleanup_mount_table(); - cg_destroy_group_and_mount_info(); -} - -int main(int argc, char *argv[]) -{ - int c; - char filename[PATH_MAX]; - int ret; - - if (argc < 2) { - fprintf(stderr, "usage is %s <option> <config file>\n", - argv[0]); - exit(2); - } - - while ((c = getopt(argc, argv, "l:ur:")) > 0) { - switch (c) { - case 'u': - cg_unload_current_config(); - break; - case 'r': - cg_unload_current_config(); - /* FALLTHROUGH */ - case 'l': - strncpy(filename, optarg, PATH_MAX); - ret = cg_load_config(filename); - if (!ret) - exit(3); - break; - default: - fprintf(stderr, "Invalid command line option\n"); - break; - } - } - - cg_destroy_group_and_mount_info(); -} diff --git a/balbir/config.h.in b/balbir/config.h.in deleted file mode 100644 index b0518e2..0000000 --- a/balbir/config.h.in +++ /dev/null @@ -1,148 +0,0 @@ -/* config.h.in. Generated from configure.in by autoheader. */ - -/* Define to 1 if your system has a working `chown' function. */ -#undef HAVE_CHOWN - -/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'. - */ -#undef HAVE_DIRENT_H - -/* Define to 1 if you have the `getmntent' function. */ -#undef HAVE_GETMNTENT - -/* Define to 1 if you have the `hasmntopt' function. */ -#undef HAVE_HASMNTOPT - -/* Define to 1 if you have the <inttypes.h> header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the `cgroup' library (-lcgroup). */ -#undef HAVE_LIBCGROUP - -/* Define to 1 if you have the <limits.h> header file. */ -#undef HAVE_LIMITS_H - -/* Define to 1 if your system has a GNU libc compatible `malloc' function, and - to 0 otherwise. */ -#undef HAVE_MALLOC - -/* Define to 1 if you have the <memory.h> header file. */ -#undef HAVE_MEMORY_H - -/* Define to 1 if you have the `memset' function. */ -#undef HAVE_MEMSET - -/* Define to 1 if you have the `mkdir' function. */ -#undef HAVE_MKDIR - -/* Define to 1 if you have the <mntent.h> header file. */ -#undef HAVE_MNTENT_H - -/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */ -#undef HAVE_NDIR_H - -/* Define to 1 if your system has a GNU libc compatible `realloc' function, - and to 0 otherwise. */ -#undef HAVE_REALLOC - -/* Define to 1 if you have the `rmdir' function. */ -#undef HAVE_RMDIR - -/* Define to 1 if `stat' has the bug that it succeeds when given the - zero-length file name argument. */ -#undef HAVE_STAT_EMPTY_STRING_BUG - -/* Define to 1 if stdbool.h conforms to C99. */ -#undef HAVE_STDBOOL_H - -/* Define to 1 if you have the <stdint.h> header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the <stdlib.h> header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the `strdup' function. */ -#undef HAVE_STRDUP - -/* Define to 1 if you have the <strings.h> header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the <string.h> header file. */ -#undef HAVE_STRING_H - -/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'. - */ -#undef HAVE_SYS_DIR_H - -/* Define to 1 if you have the <sys/mount.h> header file. */ -#undef HAVE_SYS_MOUNT_H - -/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'. - */ -#undef HAVE_SYS_NDIR_H - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the <sys/types.h> header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if you have the <unistd.h> header file. */ -#undef HAVE_UNISTD_H - -/* Define to 1 if the system has the type `_Bool'. */ -#undef HAVE__BOOL - -/* Define to 1 if `lstat' dereferences a symlink specified with a trailing - slash. */ -#undef LSTAT_FOLLOWS_SLASHED_SYMLINK - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS - -/* Define to 1 if `lex' declares `yytext' as a `char *' by default, not a - `char[]'. */ -#undef YYTEXT_POINTER - -/* Define to empty if `const' does not conform to ANSI C. */ -#undef const - -/* Define to `int' if <sys/types.h> doesn't define. */ -#undef gid_t - -/* Define to `__inline__' or `__inline' if that's what the C compiler - calls it, or to nothing if 'inline' is not supported under any name. */ -#ifndef __cplusplus -#undef inline -#endif - -/* Define to the type of a signed integer type of width exactly 64 bits if - such a type exists and the standard includes do not define it. */ -#undef int64_t - -/* Define to rpl_malloc if the replacement function should be used. */ -#undef malloc - -/* Define to `int' if <sys/types.h> does not define. */ -#undef pid_t - -/* Define to rpl_realloc if the replacement function should be used. */ -#undef realloc - -/* Define to `int' if <sys/types.h> doesn't define. */ -#undef uid_t diff --git a/balbir/configure b/balbir/configure deleted file mode 100755 index 74b1eca..0000000 --- a/balbir/configure +++ /dev/null @@ -1,7301 +0,0 @@ -#! /bin/sh -# Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.61 for control groups library and utilities 0.1b. -# -# Report bugs to <http://sourceforge.net/tracker/?group_id=218421&atid=1043649>. -# -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. -# This configure script is free software; the Free Software Foundation -# gives unlimited permission to copy, distribute and modify it. -## --------------------- ## -## M4sh Initialization. ## -## --------------------- ## - -# Be more Bourne compatible -DUALCASE=1; export DUALCASE # for MKS sh -if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then - emulate sh - NULLCMD=: - # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which - # is contrary to our usage. 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without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -AC_PREREQ(2.61) -AC_INIT([control groups library and utilities], 0.1b, - [http://sourceforge.net/tracker/?group_id=218421&atid=1043649]) -AC_CONFIG_SRCDIR([wrapper.c]) -AC_CONFIG_HEADER([config.h]) - -# Checks for programs. -AC_PROG_CXX -AC_PROG_CC -AC_PROG_YACC -if test "$YACC" != byacc; then - YACC="$SHELL $missing_dir/missing byacc" - AC_SUBST(YACC, "byacc") -fi -AC_PROG_LEX -AC_PROG_MKDIR_P -if test "$INSTALL" != install; then - AC_SUBST(INSTALL, "install") -fi -AC_PROG_INSTALL - -# Checks for libraries. -# FIXME: Replace `main' with a function in `-lcgroup': -AC_CHECK_LIB([cgroup], [cgroup_create_cgroup]) - -# Checks for header files. -AC_HEADER_DIRENT -AC_HEADER_STDC -AC_CHECK_HEADERS([limits.h mntent.h stdlib.h string.h sys/mount.h unistd.h]) - -# Checks for typedefs, structures, and compiler characteristics. -AC_HEADER_STDBOOL -AC_C_CONST -AC_TYPE_UID_T -AC_C_INLINE -AC_TYPE_INT64_T -AC_TYPE_PID_T - -# Checks for library functions. -AC_FUNC_CHOWN -AC_FUNC_GETMNTENT -AC_FUNC_MALLOC -AC_FUNC_REALLOC -AC_FUNC_STAT -AC_CHECK_FUNCS([getmntent hasmntopt memset mkdir rmdir strdup]) - -AC_CONFIG_FILES([Makefile]) -AC_CONFIG_FILES([libcgroup.spec:libcgroup.spec.in]) -AC_CONFIG_FILES([mktarball:mktarball.in]) -AC_OUTPUT diff --git a/balbir/file-ops.c b/balbir/file-ops.c deleted file mode 100644 index da3dee7..0000000 --- a/balbir/file-ops.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Authors: Balbir Singh <balbir@linux.vnet.ibm.com> - * Dhaval Giani <dhaval@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - */ - -#include <dirent.h> -#include <errno.h> -#include <fts.h> -#include <grp.h> -#include <libcgroup.h> -#include <limits.h> -#include <pwd.h> -#include <search.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/types.h> - -extern const char cg_filesystem[]; -extern struct mount_table *mount_table; - -int cg_chown_file(FTS *fts, FTSENT *ent, uid_t owner, gid_t group) -{ - int ret = 1; - const char *filename = fts->fts_path; - dbg("seeing file %s\n", filename); - switch (ent->fts_info) { - case FTS_ERR: - errno = ent->fts_errno; - break; - case FTS_D: - case FTS_DC: - case FTS_NSOK: - case FTS_NS: - case FTS_DNR: - case FTS_DP: - case FTS_F: - case FTS_DEFAULT: - ret = chown(filename, owner, group); - break; - } - return ret; -} - -/* - * TODO: Need to decide a better place to put this function. - */ -int cg_chown_recursive(const char *path, uid_t owner, gid_t group) -{ - int ret = 1; - FTS *fts = fts_open((char **)&path, FTS_PHYSICAL | FTS_NOCHDIR | - FTS_NOSTAT, NULL); - while (1) { - FTSENT *ent; - ent = fts_read(fts); - if (!ent) { - dbg("fts_read failed\n"); - break; - } - cg_chown_file(fts, ent, owner, group); - } - fts_close(fts); - return ret; -} - -char *cg_build_group_path(struct cg_group *cg_group, - struct mount_table *mount_info) -{ - char *group_path; - - group_path = malloc(strlen(mount_info->mount_point) + - strlen(cg_group->name) + 2); - if (!group_path) - return NULL; - strncpy(group_path, mount_info->mount_point, - strlen(mount_info->mount_point) + 1); - dbg("group path is %s\n", group_path); - strncat(group_path, "/", strlen("/")); - strncat(group_path, cg_group->name, strlen(cg_group->name)); - dbg("group path is %s\n", group_path); - return group_path; -} - -int cg_make_directory(struct cg_group *cg_group, const char *group_path) -{ - int ret; - ret = mkdir(group_path, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH); - if (ret < 0) - return 0; - /* - * Recursively change all files under the directory - */ - ret = cg_chown_recursive(group_path, cg_group->admin_uid, - cg_group->admin_gid); - return ret; -} - -/* - * After having parsed the configuration file, walk through the mount_table - * and mount the specified controllers. This routine might create directories - * specified as mount_point. - */ -int cg_mount_controllers(void) -{ - int ret; - struct mount_table *curr = mount_table; - struct stat buf; - - while (curr) { - ret = stat(curr->mount_point, &buf); - if (ret < 0 && errno != ENOENT) - return 0; - - /* - * Check if path needs to be created before mounting - */ - if (errno == ENOENT) { - ret = mkdir(curr->mount_point, S_IRWXU | - S_IRWXG | S_IROTH | S_IXOTH); - if (ret < 0) - return 0; - } else if (!S_ISDIR(buf.st_mode)) { - errno = ENOTDIR; - return 0; - } - - ret = mount(cg_filesystem, curr->mount_point, - cg_filesystem, 0, curr->options); - - if (ret < 0) - return 0; - curr = curr->next; - } - return 1; -} - -/* - * Called during end of WLM configuration to unmount all controllers or - * on failure, to cleanup mounted controllers - */ -int cg_unmount_controllers(void) -{ - struct mount_table *curr = mount_table; - int ret; - - while (curr) { - /* - * We ignore failures and ensure that all mounted - * containers are unmounted - */ - ret = umount(curr->mount_point); - if (ret < 0) - printf("Unmount failed\n"); - ret = rmdir(curr->mount_point); - if (ret < 0) - printf("rmdir failed\n"); - curr = curr->next; - } - return 1; -} - diff --git a/balbir/install-sh b/balbir/install-sh deleted file mode 100755 index a5897de..0000000 --- a/balbir/install-sh +++ /dev/null @@ -1,519 +0,0 @@ -#!/bin/sh -# install - install a program, script, or datafile - -scriptversion=2006-12-25.00 - -# This originates from X11R5 (mit/util/scripts/install.sh), which was -# later released in X11R6 (xc/config/util/install.sh) with the -# following copyright and license. -# -# Copyright (C) 1994 X Consortium -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to -# deal in the Software without restriction, including without limitation the -# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or -# sell copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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Wide character support - * would require us to use a scanner/parser that can parse beyond ASCII - */ - -/* - * These data structures are heavily controller dependent, which means - * any changes (additions/removal) of configuration items would have to - * be reflected in this library. We might implement a plugin - * infrastructure, so that we can deal with such changes with ease. - */ - -struct cpu_controller { - /*TODO: Add the cpu.usage file here, also need to automate this.*/ - char *shares; /* Having strings helps us write them to files */ - /* - * XX: No it does not make a difference. It requires a fprintf anyway - * so it needs the qualifier. - */ -}; - -struct cg_group { - char *name; - uid_t tasks_uid; - gid_t tasks_gid; - uid_t admin_uid; - gid_t admin_gid; - struct cpu_controller cpu_config; -}; - -/* - * A singly linked list suffices since we don't expect too many mount points - */ -struct mount_table { - char *options; /* Name(s) of the controller */ - char *mount_point; /* The place where the controller is mounted */ - struct mount_table *next; -}; - -/* - * Maintain a list of all group names. These will be used during cleanup - */ -struct list_of_names { - char *name; - struct list_of_names *next; -}; - -enum cg_msg_type { - CG_MSG_LOAD_FILE, - CG_MSG_UNLOAD_FILE, - CG_MSG_ERR, - CG_MSG_DONE, -}; - -enum cgroup_errors { - ECGROUPNOTCOMPILED=50000, - ECGROUPNOTMOUNTED, - ECGROUPNOTEXIST, - ECGROUPNOTCREATED, - ECGROUPSUBSYSNOTMOUNTED, - ECGROUPNOTOWNER, - ECGROUPMULTIMOUNTED,/* Controllers bound to different mount points */ - ECGROUPNOTALLOWED, /* This is the stock error. Default error. */ - ECGMAXVALUESEXCEEDED, - ECGCONTROLLEREXISTS, - ECGVALUEEXISTS, - ECGINVAL, - ECGCONTROLLERCREATEFAILED, -}; - -#define CG_MAX_MSG_SIZE 256 -#define CG_SERVER_MSG_PATH "/tmp/control_group" -#define CG_BACKLOG 5 - -/* Message's exchanged between server and client */ -struct cg_msg { - enum cg_msg_type type; - char buf[CG_MAX_MSG_SIZE]; -}; - -/* Function Prototypes start here */ -int cg_init_group_and_mount_info(void); -int cg_insert_into_mount_table(const char *name, const char *mount_point); -void cg_cleanup_mount_table(void); -int cg_group_admin_perm(char *perm_type, char *value); -int cg_group_task_perm(char *perm_type, char *value); -int cg_parse_controller_options(char *controller, char *name_value); -int cg_insert_group(const char *group_name); -int chown_recursive(const char* path, uid_t owner, gid_t group); -int cg_make_directory(struct cg_group *cg_group, const char *group_path); -char *cg_build_group_path(struct cg_group *cg_group, - struct mount_table *mount_info); -int cg_mount_controllers(void); -int cg_unmount_controllers(void); -int cg_load_config(const char *pathname); -void cg_unload_current_config(void); - -#define CG_NV_MAX 100 -#define CG_CONTROLLER_MAX 100 -#define CG_VALUE_MAX 100 -/* Functions and structures that can be used by the application*/ -struct cgroup; -struct cgroup_controller; - -int cgroup_init(void); -int cgroup_attach_task(struct cgroup *cgroup); -int cgroup_modify_cgroup(struct cgroup *cgroup); -int cgroup_create_cgroup(struct cgroup *cgroup, int ignore_ownership); -int cgroup_delete_cgroup(struct cgroup *cgroup, int ignore_migration); -int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid); - -/* The wrappers for filling libcg structures */ - -struct cgroup *cgroup_new_cgroup(const char *name, uid_t tasks_uid, - gid_t tasks_gid, uid_t control_uid, gid_t control_gid); -struct cgroup_controller *cgroup_add_controller(struct cgroup *cgroup, - const char *name); -void cgroup_free(struct cgroup **cgroup); -int cgroup_add_value_string(struct cgroup_controller *controller, - const char *name, const char *value); -int cgroup_add_value_int64(struct cgroup_controller *controller, - const char *name, int64_t value); -int cgroup_add_value_uint64(struct cgroup_controller *controller, - const char *name, u_int64_t value); -int cgroup_add_value_bool(struct cgroup_controller *controller, - const char *name, bool value); - -__END_DECLS - -#endif /* _LIBCG_H */ diff --git a/balbir/libcgroup.spec.in b/balbir/libcgroup.spec.in deleted file mode 100644 index 02b125a..0000000 --- a/balbir/libcgroup.spec.in +++ /dev/null @@ -1,69 +0,0 @@ -Name: cgroup -Summary: A collection of tools and libraries to control and monitor control groups the associated controllers -Group: Development/Libraries -Version: @PACKAGE_VERSION@ -Release: 1%{?dist} -License: LGPL -URL: http://libcg.sourceforge.net/%{name}-%{version}.tar.bz2 -Source0: cgroup-@PACKAGE_VERSION@.tar.bz2 -BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) -BuildRequires: byacc -BuildRequires: flex -BuildRequires: coreutils - -%description - -Control groups infrastructure. The tools and library help manipulate, control, -administrate and monitor control groups and the associated controllers. - -%package lib -Summary: Development libraries to handle control group applications -Group: Development/Libraries - -%description lib -The libcgroup-devel package contains the libraries to run control group -applications. - -%package lib-devel -Summary: Development libraries to develop applications that utilize control groups -Group: Development/Libraries - -%description lib-devel -It provides API to create/delete and modify cgroup nodes. It will also in the -future allow creation of persistent configuration for control groups and provide -scripts to manage that configuration. - -%prep -%setup -q - - -%build -%configure -make %{?_smp_mflags} - - -%install -rm -rf $RPM_BUILD_ROOT -%makeinstall - -%clean -rm -rf $RPM_BUILD_ROOT - -%files lib -%defattr(-,root,root,-) -%{_libdir}/libcgroup-%{version}.so -%{_libdir}/libcgroup.so.* -%doc COPYING INSTALL - -%files lib-devel -%defattr(-,root,root,-) -%{_includedir}/libcgroup.h -%{_libdir}/libcgroup.so -%doc COPYING INSTALL - - -%changelog -*Tue May 20 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.1-1 --The first version of libcg -* Tue May 20 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1-1 -- Get the spec file to work diff --git a/balbir/parse.y b/balbir/parse.y deleted file mode 100644 index cfc86c8..0000000 --- a/balbir/parse.y +++ /dev/null @@ -1,257 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Authors: Balbir Singh <balbir@linux.vnet.ibm.com> - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * NOTE: The grammar has been modified, not to be the most efficient, but - * to allow easy updation of internal data structures. - */ -%{ -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <libcgroup.h> - -int yylex(void); -extern int line_no; -extern char *yytext; - -void yyerror(char *s) -{ - fprintf(stderr, "error at line number %d at %c:%s", line_no, *yytext, - s); -} - -int yywrap(void) -{ - return 1; -} - -%} - -%token ID MOUNT GROUP PERM TASK ADMIN - -%union { - char *name; - char chr; - int val; -} -%type <name> ID namevalue_conf -%type <val> mountvalue_conf mount task_namevalue_conf admin_namevalue_conf -%type <val> admin_conf task_conf task_or_admin group_conf group start -%start start -%% - -start : start group - { - $$ = $1; - } - | start mount - { - $$ = $1; - } - | - { - $$ = 1; - } - ; - -group : GROUP ID '{' group_conf '}' - { - $$ = $4; - if ($$) - cg_insert_group($2); - else { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -group_conf - : ID '{' namevalue_conf '}' - { - $$ = cg_parse_controller_options($1, $3); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - | group_conf ID '{' namevalue_conf '}' - { - $$ = cg_parse_controller_options($2, $4); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - | PERM '{' task_or_admin '}' - { - $$ = $3; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -namevalue_conf - : ID '=' ID ';' - { - $1 = realloc($1, strlen($1) + strlen($3) + 2); - $1 = strncat($1, " ", strlen(" ")); - $$ = strncat($1, $3, strlen($3)); - free($3); - } - | namevalue_conf ID '=' ID ';' - { - $2 = realloc($2, strlen($2) + strlen($4) + 2); - $2 = strncat($2, " ", strlen(" ")); - $$ = strncat($2, $4, strlen($4)); - free($4); - } - ; - -task_namevalue_conf - : ID '=' ID ';' - { - $$ = cg_group_task_perm($1, $3); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - | task_namevalue_conf ID '=' ID ';' - { - $$ = $1 && cg_group_task_perm($2, $4); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -admin_namevalue_conf - : ID '=' ID ';' - { - $$ = cg_group_admin_perm($1, $3); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - | admin_namevalue_conf ID '=' ID ';' - { - $$ = $1 && cg_group_admin_perm($2, $4); - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -task_or_admin - : TASK '{' task_namevalue_conf '}' admin_conf - { - $$ = $3 && $5; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - | ADMIN '{' admin_namevalue_conf '}' task_conf - { - $$ = $3 && $5; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -admin_conf: ADMIN '{' admin_namevalue_conf '}' - { - $$ = $3; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -task_conf: TASK '{' task_namevalue_conf '}' - { - $$ = $3; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - -mountvalue_conf - : ID '=' ID ';' - { - if (!cg_insert_into_mount_table($1, $3)) { - cg_cleanup_mount_table(); - $$ = 0; - return $$; - } - $$ = 1; - } - | mountvalue_conf ID '=' ID ';' - { - if (!cg_insert_into_mount_table($2, $4)) { - cg_cleanup_mount_table(); - $$ = 0; - return $$; - } - $$ = 1; - } - ; - -mount : MOUNT '{' mountvalue_conf '}' - { - $$ = $3; - if (!$$) { - fprintf(stderr, "parsing failed at line number %d\n", - line_no); - $$ = 0; - return $$; - } - } - ; - - -%% diff --git a/balbir/samples/wlm.conf b/balbir/samples/wlm.conf deleted file mode 100644 index dc905ad..0000000 --- a/balbir/samples/wlm.conf +++ /dev/null @@ -1,35 +0,0 @@ -# -# Copyright IBM Corporation. 2007 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -# controller file -# - -group ca1 { - perm { - task { - uid = balbir; - gid = cgroup; - } - admin { - uid = root; - gid = cgroup; - } - } - - cpu { - cpu.shares = 500; - } -} - -mount { - cpu = /container; -} diff --git a/balbir/samples/wlm.conf.2 b/balbir/samples/wlm.conf.2 deleted file mode 100644 index e4739e0..0000000 --- a/balbir/samples/wlm.conf.2 +++ /dev/null @@ -1,40 +0,0 @@ -# -# Copyright IBM Corporation. 2007 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -# controller file -# - -group ca1 { - perm { - task { - uid = bulls; - gid = bears; - } - admin { - uid = root; - gid = root; - } - } - - cpu { - cpu.shares = 500; - } - - memory { - memory.limit_in_bytes = 200M; - } -} - -mount { - cpu = /container; - memory = /memory; -} diff --git a/balbir/samples/wlm.conf.3 b/balbir/samples/wlm.conf.3 deleted file mode 100644 index 6738624..0000000 --- a/balbir/samples/wlm.conf.3 +++ /dev/null @@ -1,65 +0,0 @@ -# -# Copyright IBM Corporation. 2007 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -# controller file -# - -group ca1 { - perm { - task { - uid = root; - gid = kvm; - } - admin { - uid = root; - gid = root; - } - } - - cpu { - cpu.shares = 500; - } - - memory { - memory.limit_in_bytes = 200M; - } -} - -group default { - perm { - task { - uid = root; - gid = root; - } - admin { - uid = root; - gid = root; - } - } - - cpu { - cpu.shares = 500; - } - - memory { - memory.limit_in_bytes = 200M; - } -} - -mount { - cpu = /container; - memory = /memory; -} - -mount { - cpu_acct = /acct; -} diff --git a/balbir/scripts/README b/balbir/scripts/README deleted file mode 100644 index 8007b60..0000000 --- a/balbir/scripts/README +++ /dev/null @@ -1,4 +0,0 @@ -NOTE: These are temporary intermediate scripts, till libcg is up and running -on its own. The current parser works, but has a lot of band-aid around it. -We need a good cleanroom implementation of the parser. Doing so, would -enable us to build a good daemon and a set of init scripts around it. diff --git a/balbir/scripts/doc/howto.txt b/balbir/scripts/doc/howto.txt deleted file mode 100644 index c6796d6..0000000 --- a/balbir/scripts/doc/howto.txt +++ /dev/null @@ -1,76 +0,0 @@ -initscripts - Initialization scripts; they are used to initialize the workload -management system. The script consists of two major components - -Configuration files -------------------- - -The main configuraiton file /etc/wlm.conf. This file has a format - -mount <mountpoint> <list of controllers> -<controller> <controller configuration file> - -A sample configuration file is included below - -# -# controller file -# -mount /container cpu -cpu /etc/wlm/cpu.conf - -NOTE: Any line beginning with '#' is ignored as comments. The sample -configuration above, mounts the cpu controller at mount point /container. -It then parses /etc/wlm/cpu.conf as the configuration file for the -cpu controller. - -The controller configuration file is of the format - -<name of the class> <options> - -In the case of the CPU controller a sample configuration would look -like - -class1 cpu.shares=1024 -class2 cpu.shares=512 - -The configuration below creates two classes class1 and class2 and -assigns shares of 1024 to class1 and 512 to class1. - -The other options that can be specified are - -tuid = owner of the tasks file -tgid = group permissions of the tasks file -cuid = owner of the newly created node -cgid = group permissions of the newly created node - -Example - -class1 cpu.shares = 1024 tuid=root tgid=root cuid=database cgid=database. - -By default all these files are owned by root. The flexibilty of specifying -owners makes it easier for other applications to use resource management. - -Intialization script --------------------- - -The initialization script is installed in /etc/init.d, it is called -"wlm". Depending on the run-level, it is installed in the appropriate -/etc/rc.d/rc<N>.d. The script comes with two options - -a. start - -start, starts the workload management, parses the configuration file. -If required creates the mount point directory and then mounts the -cgroup filesystem with the controllers specified. - -b. stop - -stops workload management, moves all tasks from various groups to -the root class. It then removes all other classes and then unmounts -the workload management system. - -Assumptions ------------ - -1. The kernel is compiled in with the correct options to support - cgroups and the CPU controller. -2. This version has been tested with 2.6.24-rc1 only. diff --git a/balbir/scripts/etc/wlm.conf b/balbir/scripts/etc/wlm.conf deleted file mode 100644 index 01a12b3..0000000 --- a/balbir/scripts/etc/wlm.conf +++ /dev/null @@ -1,16 +0,0 @@ -# -# Copyright IBM Corporation. 2008 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -# controller file -# -mount /tmp/container cpu -cpu /etc/wlm/cpu.conf diff --git a/balbir/scripts/etc/wlm/cpu.conf b/balbir/scripts/etc/wlm/cpu.conf deleted file mode 100644 index 10ac391..0000000 --- a/balbir/scripts/etc/wlm/cpu.conf +++ /dev/null @@ -1,14 +0,0 @@ -# -# Copyright IBM Corporation. 2008 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -class1 cpu.shares=1024 tuid=balbir tgid=balbir cuid=root cgid=root -class2 cpu.shares=512 tuid=root tgid=root cuid=balbir cgid=balbir diff --git a/balbir/scripts/etc/wlm/cpuacct.conf b/balbir/scripts/etc/wlm/cpuacct.conf deleted file mode 100644 index 10ac391..0000000 --- a/balbir/scripts/etc/wlm/cpuacct.conf +++ /dev/null @@ -1,14 +0,0 @@ -# -# Copyright IBM Corporation. 2008 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -class1 cpu.shares=1024 tuid=balbir tgid=balbir cuid=root cgid=root -class2 cpu.shares=512 tuid=root tgid=root cuid=balbir cgid=balbir diff --git a/balbir/scripts/init.d/wlm b/balbir/scripts/init.d/wlm deleted file mode 100755 index 65d51bd..0000000 --- a/balbir/scripts/init.d/wlm +++ /dev/null @@ -1,288 +0,0 @@ -# -# Start/Stop the workload manager -# -# Copyright IBM Corporation. 2008 -# -# Authors: Balbir Singh <balbir@linux.vnet.ibm.com> -# This program is free software; you can redistribute it and/or modify it -# under the terms of version 2.1 of the GNU Lesser General Public License -# as published by the Free Software Foundation. -# -# This program is distributed in the hope that it would be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# -# -# TODO: Make this code more robust, add error checking and recovery -# for invalid configuration or interrupted execution -# -# Make the script LSB compliant -# - -CONF_FILE=/etc/wlm.conf -PROC_CGROUPS_FILE=/proc/cgroups -CGROUP_FS=cgroup -IGNORE_OPTS="ns cpuset" - -# support multiple mount points - -declare -a MOUNTPOINT -declare -a MOUNTOPTS -maxindex=0 - -parse_controller_file() { - ctlr=$1 - file=$2 - tuid="root" - tgid="root" - cuid="root" - cgid="root" - - pushd $PWD 2>&1 > /dev/null - while read name opts - do - case $name in - 'mount') - ;; - *) - if ! echo $name | grep -q ^# - then - echo "Creating class $name" - class=$name - index=1 - for i in `seq 1 $maxindex` - do - echo "mount pt ${MOUNTPOINT[$i]}" - mkdir -p ${MOUNTPOINT[$i]}/$class - cd ${MOUNTPOINT[$i]}/$class - - if echo $opts | grep -q "=" - then - for single_opt in $opts - do - cf=`echo $single_opt | cut -d '=' -f1` - co=`echo $single_opt | cut -d '=' -f2` - case $cf in - "tuid") - tuid=$co - ;; - "cuid") - cuid=$co - ;; - "tgid") - tgid=$co - ;; - "cgid") - cgid=$co - ;; - *) - echo -n $co > $cf - ;; - esac - done - chown -R $cuid:$cgid ${MOUNTPOINT[$i]}/$class - chown -R $tuid:$tgid ${MOUNTPOINT[$i]}/$class/tasks - fi - done - fi - esac - done < $file - popd 2>&1 > /dev/null -} - -parse_controller_opts() { - name=$1; - file=$2; - - if [ ! -r $PROC_CGROUPS_FILE ] - then - echo "$PROC_CGROUPS_FILE does not exist, please compile" - echo "cgroups into the kernel" - exit 1 - else - line=`grep -w $name $PROC_CGROUPS_FILE` - if [ $? -ne 0 ] - then - echo "$name controller not enabled" - exit 1 - fi - - active=`echo $line | awk '{print $2}'` - if [[ $active -eq 0 ]] - then - echo "$name controller not mounted" - else - parse_controller_file $name $file - fi - fi -} - -parse_conf_file() { - while read name conf - do - # skip all comments - if ! echo $name | grep -q ^# - then - case $name in - 'mount') - maxindex=$(($maxindex+1)) - MOUNTPOINT[$maxindex]=`echo $conf | cut -d ' ' -f1`; - MOUNTOPTS[$maxindex]=`echo $conf | cut -d ' ' -f2`; - ;; - esac - fi - done < $CONF_FILE - - return 0; -} - -mount_fs() { - if [ ! -r $PROC_CGROUPS_FILE ] - then - echo "$PROC_CGROUPS_FILE does not exist, please compile" - echo "cgroups into the kernel" - exit 1 - #else - #while read name hierarchy num_cgroups - #do - # if ! echo $name | grep -q ^# - # then - # echo $IGNORE_OPTS | grep -wq $name - # if [[ $? -ne 0 ]] - # then - # MOUNT_OPTS=$name","$MOUNT_OPTS - # fi - # fi - #done < $PROC_CGROUPS_FILE - #MOUNT_OPTS=${MOUNT_OPTS%%","} - #line=`grep -w $MOUNT_OPTS $PROC_CGROUPS_FILE` - #if [ $? -ne 0 ] - #then - # echo "$name controller not enabled" - # exit 1 - #fi - fi - for i in `seq 1 $maxindex` - do - mkdir -p ${MOUNTPOINT[$i]} - echo "mounting ${MOUNTPOINT[$i]} with ${MOUNTOPTS[$i]}" - mount -t $CGROUP_FS $CGROUP_FS -o ${MOUNTOPTS[$i]} ${MOUNTPOINT[$i]} - # - # Give root tasks read/write permission to all, since tasks - # tasks will be moved to root frequently - # - chmod ago+rwx ${MOUNTPOINT[$i]}/tasks - chmod ago+rwx ${MOUNTPOINT[$i]} - chmod +t ${MOUNTPOINT[$i]} - done - return $? -} - -umount_fs() { - for i in `seq 1 $maxindex` - do - umount ${MOUNTPOINT[$i]} - rmdir ${MOUNTPOINT[$i]} - done -} - -create_classes() { - while read name conf - do - # skip all comments - if ! echo $name | grep -q ^# - then - case $name in - 'mount') - ;; - *) - parse_controller_opts $name $conf - esac - fi - - done < $CONF_FILE -} - -start() { - echo "Starting wlm service: " - mount_fs - if [ $? -eq 0 ] - then - create_classes - fi - [ $? == 0 ] && touch /var/lock/subsys/wlm - return $? -} - -move_all_to_init_class() { - for i in `seq 1 $maxindex` - do - cd ${MOUNTPOINT[$i]} - cat /proc/mounts | grep -wq ${MOUNTPOINT[$i]} - if [ $? -ne 0 ] - then - echo "resource control filesystem not mounted" - exit 1 - fi - - for i in `find . -type d` - do - case $i in - '.') - ;; - *) - class=${i#./*} - echo "Removing class $class" - sed -nu p < ./$i/tasks > tasks - rmdir $i - ;; - esac - done - cd - > /dev/null - done -} - - -stop() { - move_all_to_init_class - umount_fs -} - -trapped() { - # - # Do nothing - # - true -} - -usage() { - echo "$0 <start|stop>" - exit 1 -} - -common() { - # - # main script work done here - # - trap "trapped ABRT" ABRT - trap "trapped QUIT" QUIT - trap "trapped TERM" TERM - trap "trapped INT" INT - - parse_conf_file -} - -case $1 in - 'start') - common - start; - ;; - 'stop') - common - stop; - ;; - *) - usage - ;; -esac - diff --git a/balbir/tests/Makefile b/balbir/tests/Makefile deleted file mode 100644 index 0870f10..0000000 --- a/balbir/tests/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -CXXFLAGS = -g -O2 -Wall -DDEBUG -LDFLAGS = -L .. -LIBS = -lcgroup - -libcg_ba: libcg_ba.cpp - $(CXX) $(CXXFLAGS) -o $@ $< $(LDFLAGS) $(LIBS) - -clean: - \rm libcg_ba diff --git a/balbir/tests/libcg_ba.cpp b/balbir/tests/libcg_ba.cpp deleted file mode 100644 index f06ba9b..0000000 --- a/balbir/tests/libcg_ba.cpp +++ /dev/null @@ -1,127 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Author: Balbir Singh <balbir@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Basic acceptance test for libcgroup - Written one late night by Balbir Singh - */ -using namespace std; - -#include <string> -#include <stdexcept> -#include <iostream> -#include <libcgroup.h> -#include <sys/types.h> -#include <pwd.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> - -namespace cgtest { - -class cg { -private: -public: - cg(); - ~cg() - { } - struct cgroup *makenode(const string &name, const string &task_uid, - const string &task_gid, const string &control_uid, - const string &control_gid); -}; - -cg::cg(void) -{ - int ret; - - ret = cgroup_init(); - if (ret) - throw logic_error("Control Group Initialization failed..." - "Please check that cgroups are mounted and\n" - "at a single place"); -} - -struct cgroup *cg::makenode(const string &name, const string &task_uid, - const string &task_gid, const string &control_uid, - const string &control_gid) -{ - uid_t tuid, cuid; - gid_t tgid, cgid; - char *cgroup_name; - struct cgroup *ccg; - struct cgroup_controller *cpu, *memory, *cpuacct; - struct passwd *passwd; - struct group *grp; - int ret; - - passwd = getpwnam(task_uid.c_str()); - if (!passwd) - return NULL; - tuid = passwd->pw_uid; - - grp = getgrnam(task_gid.c_str()); - if (!grp) - return NULL; - tgid = grp->gr_gid; - - passwd = getpwnam(control_uid.c_str()); - if (!passwd) - return NULL; - cuid = passwd->pw_uid; - - grp = getgrnam(control_gid.c_str()); - if (!grp) - return NULL; - cgid = grp->gr_gid; - - dbg("tuid %d, tgid %d, cuid %d, cgid %d\n", tuid, tgid, cuid, cgid); - - cgroup_name = (char *) malloc(name.length()); - memset(cgroup_name, '\0', name.length()); - strncpy(cgroup_name, name.c_str(), name.length()); - - ccg = cgroup_new_cgroup(cgroup_name, tuid, tgid, cuid, cgid); - cpu = cgroup_add_controller(ccg, "cpu"); - cgroup_add_value_uint64(cpu, "cpu.shares", 2048); - memory = cgroup_add_controller(ccg, "memory"); - cgroup_add_value_uint64(memory, "memory.limit_in_bytes", 102400); - cpuacct = cgroup_add_controller(ccg, "cpuacct"); - cgroup_add_value_uint64(cpuacct, "cpuacct.usage", 0); - - - ret = cgroup_create_cgroup(ccg, 1); - if (ret) { - cout << "cg create group failed " << errno << endl; - ret = cgroup_delete_cgroup(ccg, 1); - if (ret) - cout << "cg delete group failed " << errno << endl; - } - return ccg; -} - -} // namespace - -using namespace cgtest; -int main(int argc, char *argv[]) -{ - try { - cg *app = new cg(); - struct cgroup *ccg; - ccg = app->makenode("database", "root", "root", "balbir", - "balbir"); - cgroup_free(&ccg); - delete app; - } catch (exception &e) { - cout << e.what() << endl; - exit(1); - } - return 0; -} diff --git a/balbir/wrapper.c b/balbir/wrapper.c deleted file mode 100644 index 916710f..0000000 --- a/balbir/wrapper.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - * Copyright IBM Corporation. 2008 - * - * Author: Dhaval Giani <dhaval@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Code initiated and designed by Dhaval Giani. All faults are most likely - * his mistake. - */ - -#include <libcgroup.h> -#include <libcgroup-internal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -struct cgroup *cgroup_new_cgroup(const char *name, uid_t tasks_uid, - gid_t tasks_gid, uid_t control_uid, gid_t control_gid) -{ - struct cgroup *cgroup = (struct cgroup *) - malloc(sizeof(struct cgroup)); - - if (!cgroup) - return NULL; - - strncpy(cgroup->name, name, sizeof(cgroup->name)); - cgroup->tasks_uid = tasks_uid; - cgroup->tasks_gid = tasks_gid; - cgroup->control_uid = control_uid; - cgroup->control_gid = control_gid; - cgroup->index = 0; - cgroup->controller[cgroup->index] = NULL; - - return cgroup; -} - -struct cgroup_controller *cgroup_add_controller(struct cgroup *cgroup, - const char *name) -{ - int i; - struct cgroup_controller *controller; - - /* - * Still not sure how to handle the failure here. - */ - if (cgroup->index >= CG_CONTROLLER_MAX) - return NULL; - - /* - * Still not sure how to handle the failure here. - */ - for (i = 0; i < cgroup->index; i++) { - if (strncmp(name, cgroup->controller[i]->name, - sizeof(cgroup->controller[i]->name)) == 0) - return NULL; - } - - controller = (struct cgroup_controller *) - malloc(sizeof(struct cgroup_controller)); - - if (!controller) - return NULL; - - strncpy(controller->name, name, sizeof(controller->name)); - controller->index = 0; - controller->values[controller->index] = NULL; - - cgroup->controller[cgroup->index] = controller; - cgroup->index++; - - return controller; -} - -void cgroup_free(struct cgroup **cgroup) -{ - int i, j; - struct cgroup *cg = *cgroup; - - /* - * Passing NULL pointers is OK. We just return. - */ - if (!cg) - return; - - for (i = 0; i < cg->index; i++) { - for (j = 0; j < cg->controller[i]->index; j++) - free(cg->controller[i]->values[j]); - free(cg->controller[i]); - } - - free(cg); - *cgroup = NULL; -} - -int cgroup_add_value_string(struct cgroup_controller *controller, - const char *name, const char *value) -{ - int i; - struct control_value *cntl_value = (struct control_value *) - malloc(sizeof(struct control_value)); - - if (!cntl_value) - return ECGCONTROLLERCREATEFAILED; - - if (controller->index >= CG_VALUE_MAX) - return ECGMAXVALUESEXCEEDED; - - for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) { - if (strncmp(controller->values[controller->index]->name, name, - sizeof(controller->values[controller->index]->name)) == 0) - return ECGVALUEEXISTS; - } - - - strncpy(cntl_value->name, name, sizeof(cntl_value->name)); - strncpy(cntl_value->value, value, sizeof(cntl_value->value)); - controller->values[controller->index] = cntl_value; - controller->index++; - - return 0; -} - -int cgroup_add_value_int64(struct cgroup_controller *controller, - const char *name, int64_t value) -{ - int i; - unsigned ret; - struct control_value *cntl_value = (struct control_value *) - malloc(sizeof(struct control_value)); - - if (!cntl_value) - return ECGCONTROLLERCREATEFAILED; - - - if (controller->index >= CG_VALUE_MAX) - return ECGMAXVALUESEXCEEDED; - - for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) { - if (strncmp(controller->values[controller->index]->name, name, - sizeof(controller->values[controller->index]->name)) == 0) - return ECGVALUEEXISTS; - } - - strncpy(cntl_value->name, name, - sizeof(cntl_value->name)); - ret = snprintf(cntl_value->value, - sizeof(cntl_value->value), "%lld", value); - - if (ret >= sizeof(cntl_value->value)) - return ECGINVAL; - - controller->values[controller->index] = cntl_value; - controller->index++; - - return 0; - -} - -int cgroup_add_value_uint64(struct cgroup_controller *controller, - const char *name, u_int64_t value) -{ - int i; - unsigned ret; - struct control_value *cntl_value = (struct control_value *) - malloc(sizeof(struct control_value)); - - if (!cntl_value) - return ECGCONTROLLERCREATEFAILED; - - - if (controller->index >= CG_VALUE_MAX) - return ECGMAXVALUESEXCEEDED; - - for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) { - if (strncmp(controller->values[controller->index]->name, name, - sizeof(controller->values[controller->index]->name)) == 0) - return ECGVALUEEXISTS; - } - - strncpy(cntl_value->name, name, sizeof(cntl_value->name)); - ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "%llu", value); - - if (ret >= sizeof(cntl_value->value)) - return ECGINVAL; - - controller->values[controller->index] = cntl_value; - controller->index++; - - return 0; - -} - -int cgroup_add_value_bool(struct cgroup_controller *controller, - const char *name, bool value) -{ - int i; - unsigned ret; - struct control_value *cntl_value = (struct control_value *) - malloc(sizeof(struct control_value)); - - if (!cntl_value) - return ECGCONTROLLERCREATEFAILED; - - - if (controller->index >= CG_VALUE_MAX) - return ECGMAXVALUESEXCEEDED; - - for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) { - if (strncmp(controller->values[controller->index]->name, name, - sizeof(controller->values[controller->index]->name)) == 0) - return ECGVALUEEXISTS; - } - - strncpy(cntl_value->name, name, sizeof(cntl_value->name)); - - if (value) - ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "1"); - else - ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "0"); - - if (ret >= sizeof(cntl_value->value)) - return ECGINVAL; - - controller->values[controller->index] = cntl_value; - controller->index++; - - return 0; -} diff --git a/libcgroup.spec.in b/libcgroup.spec.in index 20915bb..02b125a 100644 --- a/libcgroup.spec.in +++ b/libcgroup.spec.in @@ -5,7 +5,7 @@ Version: @PACKAGE_VERSION@ Release: 1%{?dist} License: LGPL URL: http://libcg.sourceforge.net/%{name}-%{version}.tar.bz2 -Source0: libcgroup.tar.bz2 +Source0: cgroup-@PACKAGE_VERSION@.tar.bz2 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) BuildRequires: byacc BuildRequires: flex diff --git a/balbir/mktarball.in b/mktarball.in index eeabe19..eeabe19 100755 --- a/balbir/mktarball.in +++ b/mktarball.in |