| /* |
| * Copyright (C) 2000-2010, Parallels, Inc. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "types.h" |
| #include "quota.h" |
| #include "vzerror.h" |
| #include "util.h" |
| #include "script.h" |
| #include "logger.h" |
| |
| #define VZQUOTA "/usr/sbin/vzquota" |
| |
| int is_vzquota_available(void) |
| { |
| return stat_file(VZQUOTA); |
| } |
| |
| void quota_inc(dq_param *param, int delta) |
| { |
| if (param->enable != YES) |
| return; |
| if (param->diskspace != NULL) { |
| param->diskspace[0] += delta; |
| param->diskspace[1] += delta; |
| } |
| if (param->diskinodes != NULL) { |
| param->diskinodes[0] += delta; |
| param->diskinodes[1] += delta; |
| } |
| } |
| |
| int is_2nd_level_quota_on(const dq_param *param) |
| { |
| return (param->ugidlimit != NULL && *param->ugidlimit != 0); |
| } |
| |
| int quota_set(envid_t veid, char *private, dq_param *param) |
| { |
| int i, ret; |
| char buf[64]; |
| char *arg[24]; |
| |
| if (param->diskspace == NULL && |
| param->diskinodes == NULL && |
| param->exptime == NULL && |
| param->ugidlimit == NULL && |
| private == NULL) |
| { |
| return 0; |
| } |
| i = 0; |
| arg[i++] = strdup(VZQUOTA); |
| arg[i++] = strdup("setlimit"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| if (private != NULL) { |
| arg[i++] = strdup("-p"); |
| arg[i++] = strdup(private); |
| } |
| if (param->diskspace != NULL) { |
| arg[i++] = strdup("-b"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-B"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[1]); |
| arg[i++] = strdup(buf); |
| } |
| if (param->diskinodes != NULL) { |
| arg[i++] = strdup("-i"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-I"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[1]); |
| arg[i++] = strdup(buf); |
| } |
| if (param->exptime != NULL) { |
| arg[i++] = strdup("-e"); |
| snprintf(buf, sizeof(buf), "%lu", param->exptime[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-n"); |
| snprintf(buf, sizeof(buf), "%lu", param->exptime[0]); |
| arg[i++] = strdup(buf); |
| } |
| /* Set ugid limit */ |
| if (is_2nd_level_quota_on(param)) { |
| arg[i++] = strdup("-u"); |
| snprintf(buf, sizeof(buf), "%lu", *param->ugidlimit); |
| arg[i++] = strdup(buf); |
| } |
| arg[i] = NULL; |
| if ((ret = run_script(VZQUOTA, arg, NULL, 0))) { |
| logger(-1, 0, "vzquota setlimit failed [%d]", ret); |
| ret = VZ_DQ_SET; |
| } |
| free_arg(arg); |
| |
| return ret; |
| } |
| |
| int quota_init(envid_t veid, char *private, dq_param *param) |
| { |
| int i, ret; |
| char buf[64]; |
| char *arg[24]; |
| |
| if (check_var(private, |
| "Error: Not enough parameters, private not set")) |
| { |
| return VZ_FS_NOPRVT; |
| } |
| if (check_var(param->diskspace, |
| "Error: Not enough parameters, diskspace quota not set")) |
| { |
| return VZ_DISKSPACE_NOT_SET; |
| } |
| if (check_var(param->diskinodes, |
| "Error: Not enough parameters, diskinodes quota not set")) |
| { |
| return VZ_DISKINODES_NOT_SET; |
| } |
| i = 0; |
| arg[i++] = strdup(VZQUOTA); |
| arg[i++] = strdup("init"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| /* Disk space */ |
| arg[i++] = strdup("-b"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-B"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[1]); |
| arg[i++] = strdup(buf); |
| /* Disk inodes */ |
| arg[i++] = strdup("-i"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-I"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[1]); |
| arg[i++] = strdup(buf); |
| /* CT private */ |
| arg[i++] = strdup("-p"); |
| arg[i++] = strdup(private); |
| /* Expiration time */ |
| arg[i++] = strdup("-e"); |
| snprintf(buf, sizeof(buf), "%lu", |
| param->exptime == NULL ? QUOTA_EXPTIME : param->exptime[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-n"); |
| arg[i++] = strdup(buf); |
| /* ugid limit */ |
| arg[i++] = strdup("-s"); |
| if (is_2nd_level_quota_on(param)) { |
| arg[i++] = strdup("1"); |
| arg[i++] = strdup("-u"); |
| snprintf(buf, sizeof(buf), "%lu", *param->ugidlimit); |
| arg[i++] = strdup(buf); |
| } else |
| arg[i++] = strdup("0"); |
| arg[i] = NULL; |
| if ((ret = run_script(VZQUOTA, arg, NULL, 0))) { |
| logger(-1, 0, "vzquota init failed [%d]", ret); |
| ret = VZ_DQ_INIT; |
| } |
| free_arg(arg); |
| |
| return ret; |
| } |
| |
| /** Turn disk quota on. |
| * |
| * @param veid CT ID. |
| * @param private CT private area path. |
| * @param dq disk quota parameters. |
| * @return 0 on success. |
| */ |
| int quota_on(envid_t veid, char *private, dq_param *param) |
| { |
| int i, ret, ret2 = 0, tried = 0; |
| char buf[64]; |
| char *arg[24]; |
| |
| if (check_var(param->diskspace, |
| "Error: Not enough parameters, diskspace quota not set")) |
| { |
| return VZ_DISKSPACE_NOT_SET; |
| } |
| if (check_var(param->diskinodes, |
| "Error: Not enough parameters, diskinodes quota not set")) |
| { |
| return VZ_DISKINODES_NOT_SET; |
| } |
| i = 0; |
| arg[i++] = strdup(VZQUOTA); |
| arg[i++] = strdup("on"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| /* Disk space */ |
| arg[i++] = strdup("-b"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-B"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskspace[1]); |
| arg[i++] = strdup(buf); |
| /* Disk inodes */ |
| arg[i++] = strdup("-i"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-I"); |
| snprintf(buf, sizeof(buf), "%lu", param->diskinodes[1]); |
| arg[i++] = strdup(buf); |
| /* Expiration time */ |
| arg[i++] = strdup("-e"); |
| snprintf(buf, sizeof(buf), "%lu", |
| param->exptime == NULL ? QUOTA_EXPTIME : param->exptime[0]); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-n"); |
| arg[i++] = strdup(buf); |
| /* ugid limit */ |
| arg[i++] = strdup("-s"); |
| if (is_2nd_level_quota_on(param)) { |
| arg[i++] = strdup("1"); |
| arg[i++] = strdup("-u"); |
| snprintf(buf, sizeof(buf), "%lu", *param->ugidlimit); |
| arg[i++] = strdup(buf); |
| } else |
| arg[i++] = strdup("0"); |
| arg[i] = 0; |
| |
| retry: |
| if ((ret = run_script(VZQUOTA, arg, NULL, 0))) { |
| switch (ret) { |
| case EXITCODE_QUOTNOTEXIST: |
| if (!tried) { |
| tried++; |
| /* Initialize the quota and retry */ |
| ret2 = quota_init(veid, private, param); |
| if (!ret2) |
| goto retry; |
| } |
| break; |
| case EXITCODE_QUOTARUN: |
| /* Ignore the error, run quota set instead */ |
| ret = 0; |
| ret2 = quota_set(veid, private, param); |
| break; |
| } |
| } |
| free_arg(arg); |
| |
| if (ret2) |
| return ret2; |
| |
| if (ret) { |
| logger(-1, 0, "vzquota on failed [%d]", ret); |
| return VZ_DQ_ON; |
| } |
| |
| return 0; |
| } |
| |
| /** Turn disk quota off. |
| * |
| * @param veid CT ID. |
| * @param dq disk quota parameters. |
| * @return 0 on success. |
| */ |
| int quota_off(envid_t veid, int force) |
| { |
| int i, ret; |
| char buf[64]; |
| char *arg[5]; |
| |
| i = 0; |
| arg[i++] = strdup(VZQUOTA); |
| arg[i++] = strdup("off"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| if (force) |
| arg[i++] = strdup("-f"); |
| arg[i] = NULL; |
| if ((ret = run_script(VZQUOTA, arg, NULL, 0))) { |
| if (ret != EXITCODE_QUOTANOTRUN) { |
| logger(-1, 0, "vzquota off failed [%d]", ret); |
| ret = VZ_DQ_OFF; |
| } |
| else |
| ret = 0; |
| } |
| free_arg(arg); |
| |
| return ret; |
| } |
| |
| /** Disk quota management wrapper. |
| * |
| * @param veid CT ID. |
| * @param cmd quota commands (QUOTA_MARKDIRTY QUOTA_DROP QUOTA_STAT) |
| * @return 0 on success. |
| */ |
| int quota_ctl(envid_t veid, int cmd) |
| { |
| int i, ret; |
| char buf[64]; |
| char *arg[6]; |
| int quiet = 0; |
| |
| i = 0; |
| arg[i++] = strdup(VZQUOTA); |
| switch (cmd) { |
| case QUOTA_MARKDIRTY: |
| arg[i++] =strdup( "setlimit"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-f"); |
| quiet = 1; |
| break; |
| case QUOTA_DROP : |
| arg[i++] = strdup("drop"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| quiet = 1; |
| break; |
| case QUOTA_STAT : |
| arg[i++] = strdup("stat"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-f"); |
| quiet = 1; |
| break; |
| case QUOTA_STAT2: |
| arg[i++] = strdup("stat"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| arg[i++] = strdup("-f"); |
| arg[i++] = strdup("-t"); |
| quiet = 1; |
| break; |
| case QUOTA_SHOW: |
| arg[i++] = strdup("show"); |
| snprintf(buf, sizeof(buf), "%d", veid); |
| arg[i++] = strdup(buf); |
| quiet = 1; |
| break; |
| default : |
| logger(-1, 0, "quota_ctl: Unknown action %d", cmd); |
| return VZ_SYSTEM_ERROR; |
| } |
| arg[i] = NULL; |
| ret = run_script(VZQUOTA, arg, NULL, quiet); |
| free_arg(arg); |
| |
| return ret; |
| } |
| |
| /** Setup disk quota limits. |
| * |
| * @param veid CT ID. |
| * @param dq disk quota parameters. |
| * @return 0 on success. |
| */ |
| int vps_set_quota(envid_t veid, dq_param *dq) |
| { |
| int ret; |
| unsigned long *tmp_ugidlimit = NULL; |
| |
| if (dq->enable == NO) |
| return 0; |
| if (dq->diskspace == NULL && |
| dq->diskinodes == NULL && |
| dq->exptime == NULL && |
| dq->ugidlimit == NULL) |
| { |
| return 0; |
| } |
| if (quota_ctl(veid, QUOTA_STAT)) { |
| logger(-1, 0, "Error: Unable to apply new quota values:" |
| " quota not running"); |
| return VZ_DQ_SET; |
| } |
| if (dq->ugidlimit != NULL) { |
| ret = quota_ctl(veid, QUOTA_STAT2); |
| if (ret == EXITCODE_UGID_NOTRUN && *dq->ugidlimit) { |
| logger(-1, 0, "Unable to apply new quota values:" |
| " ugid quota not initialized"); |
| return VZ_DQ_UGID_NOTINITIALIZED; |
| } else if (!ret && !*dq->ugidlimit) { |
| logger(-1, 0, "WARNING: Unable to turn ugid quota" |
| " off. New parameters will be applied" |
| " during the next start"); |
| tmp_ugidlimit = dq->ugidlimit; |
| dq->ugidlimit = NULL; |
| } |
| } |
| ret = quota_set(veid, NULL, dq); |
| if (tmp_ugidlimit != NULL) |
| dq->ugidlimit = tmp_ugidlimit; |
| |
| return ret; |
| } |
| |
| /** Turn disk quota on. |
| * |
| * @param veid CT ID. |
| * @param private CT private area path. |
| * @param dq disk quota parameters. |
| * @return 0 on success. |
| */ |
| int vps_quotaon(envid_t veid, char *private, dq_param *dq) |
| { |
| int ret; |
| |
| if (dq == NULL) |
| return 0; |
| if (dq->enable == NO) { |
| // quota_ctl(veid, QUOTA_MARKDIRTY); |
| return 0; |
| } else { |
| if (quota_ctl(veid, QUOTA_SHOW) == EXITCODE_QUOTNOTEXIST) { |
| logger(0, 0, "Initializing quota ..."); |
| if ((ret = quota_init(veid, private, dq))) |
| return ret; |
| } |
| } |
| if ((ret = quota_on(veid, private, dq))) |
| return ret; |
| return 0; |
| } |
| |
| /** Turn disk quota off. |
| * |
| * @param veid CT ID. |
| * @param dq disk quota parameters. |
| * @return 0 on success. |
| */ |
| int vps_quotaoff(envid_t veid, dq_param *dq) |
| { |
| if (dq == NULL) |
| return 0; |
| if (dq->enable == NO) |
| return 0; |
| return quota_off(veid, 0); |
| } |