diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/llog_ioctl.c')
-rw-r--r-- | drivers/staging/lustre/lustre/obdclass/llog_ioctl.c | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/llog_ioctl.c b/drivers/staging/lustre/lustre/obdclass/llog_ioctl.c new file mode 100644 index 000000000000..0732874e26c5 --- /dev/null +++ b/drivers/staging/lustre/lustre/obdclass/llog_ioctl.c @@ -0,0 +1,427 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * 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 version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2012, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + +#define DEBUG_SUBSYSTEM S_LOG + +#include <obd_class.h> +#include <lustre_log.h> +#include "llog_internal.h" + +static int str2logid(struct llog_logid *logid, char *str, int len) +{ + char *start, *end, *endp; + __u64 id, seq; + + ENTRY; + start = str; + if (*start != '#') + RETURN(-EINVAL); + + start++; + if (start - str >= len - 1) + RETURN(-EINVAL); + end = strchr(start, '#'); + if (end == NULL || end == start) + RETURN(-EINVAL); + + *end = '\0'; + id = simple_strtoull(start, &endp, 0); + if (endp != end) + RETURN(-EINVAL); + + start = ++end; + if (start - str >= len - 1) + RETURN(-EINVAL); + end = strchr(start, '#'); + if (end == NULL || end == start) + RETURN(-EINVAL); + + *end = '\0'; + seq = simple_strtoull(start, &endp, 0); + if (endp != end) + RETURN(-EINVAL); + + ostid_set_seq(&logid->lgl_oi, seq); + ostid_set_id(&logid->lgl_oi, id); + + start = ++end; + if (start - str >= len - 1) + RETURN(-EINVAL); + logid->lgl_ogen = simple_strtoul(start, &endp, 16); + if (*endp != '\0') + RETURN(-EINVAL); + + RETURN(0); +} + +static int llog_check_cb(const struct lu_env *env, struct llog_handle *handle, + struct llog_rec_hdr *rec, void *data) +{ + struct obd_ioctl_data *ioc_data = (struct obd_ioctl_data *)data; + static int l, remains, from, to; + static char *out; + char *endp; + int cur_index, rc = 0; + + ENTRY; + + if (ioc_data && ioc_data->ioc_inllen1 > 0) { + l = 0; + remains = ioc_data->ioc_inllen4 + + cfs_size_round(ioc_data->ioc_inllen1) + + cfs_size_round(ioc_data->ioc_inllen2) + + cfs_size_round(ioc_data->ioc_inllen3); + from = simple_strtol(ioc_data->ioc_inlbuf2, &endp, 0); + if (*endp != '\0') + RETURN(-EINVAL); + to = simple_strtol(ioc_data->ioc_inlbuf3, &endp, 0); + if (*endp != '\0') + RETURN(-EINVAL); + ioc_data->ioc_inllen1 = 0; + out = ioc_data->ioc_bulk; + } + + cur_index = rec->lrh_index; + if (cur_index < from) + RETURN(0); + if (to > 0 && cur_index > to) + RETURN(-LLOG_EEMPTY); + + if (handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) { + struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; + struct llog_handle *loghandle; + + if (rec->lrh_type != LLOG_LOGID_MAGIC) { + l = snprintf(out, remains, "[index]: %05d [type]: " + "%02x [len]: %04d failed\n", + cur_index, rec->lrh_type, + rec->lrh_len); + } + if (handle->lgh_ctxt == NULL) + RETURN(-EOPNOTSUPP); + rc = llog_cat_id2handle(env, handle, &loghandle, &lir->lid_id); + if (rc) { + CDEBUG(D_IOCTL, "cannot find log #"DOSTID"#%08x\n", + POSTID(&lir->lid_id.lgl_oi), + lir->lid_id.lgl_ogen); + RETURN(rc); + } + rc = llog_process(env, loghandle, llog_check_cb, NULL, NULL); + llog_handle_put(loghandle); + } else { + bool ok; + + switch (rec->lrh_type) { + case OST_SZ_REC: + case MDS_UNLINK_REC: + case MDS_UNLINK64_REC: + case MDS_SETATTR64_REC: + case OBD_CFG_REC: + case LLOG_GEN_REC: + case LLOG_HDR_MAGIC: + ok = true; + break; + default: + ok = false; + } + + l = snprintf(out, remains, "[index]: %05d [type]: " + "%02x [len]: %04d %s\n", + cur_index, rec->lrh_type, rec->lrh_len, + ok ? "ok" : "failed"); + out += l; + remains -= l; + if (remains <= 0) { + CERROR("%s: no space to print log records\n", + handle->lgh_ctxt->loc_obd->obd_name); + RETURN(-LLOG_EEMPTY); + } + } + RETURN(rc); +} + +static int llog_print_cb(const struct lu_env *env, struct llog_handle *handle, + struct llog_rec_hdr *rec, void *data) +{ + struct obd_ioctl_data *ioc_data = (struct obd_ioctl_data *)data; + static int l, remains, from, to; + static char *out; + char *endp; + int cur_index; + + ENTRY; + if (ioc_data != NULL && ioc_data->ioc_inllen1 > 0) { + l = 0; + remains = ioc_data->ioc_inllen4 + + cfs_size_round(ioc_data->ioc_inllen1) + + cfs_size_round(ioc_data->ioc_inllen2) + + cfs_size_round(ioc_data->ioc_inllen3); + from = simple_strtol(ioc_data->ioc_inlbuf2, &endp, 0); + if (*endp != '\0') + RETURN(-EINVAL); + to = simple_strtol(ioc_data->ioc_inlbuf3, &endp, 0); + if (*endp != '\0') + RETURN(-EINVAL); + out = ioc_data->ioc_bulk; + ioc_data->ioc_inllen1 = 0; + } + + cur_index = rec->lrh_index; + if (cur_index < from) + RETURN(0); + if (to > 0 && cur_index > to) + RETURN(-LLOG_EEMPTY); + + if (handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) { + struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; + + if (rec->lrh_type != LLOG_LOGID_MAGIC) { + CERROR("invalid record in catalog\n"); + RETURN(-EINVAL); + } + + l = snprintf(out, remains, + "[index]: %05d [logid]: #"DOSTID"#%08x\n", + cur_index, POSTID(&lir->lid_id.lgl_oi), + lir->lid_id.lgl_ogen); + } else if (rec->lrh_type == OBD_CFG_REC) { + int rc; + + rc = class_config_parse_rec(rec, out, remains); + if (rc < 0) + RETURN(rc); + l = rc; + } else { + l = snprintf(out, remains, + "[index]: %05d [type]: %02x [len]: %04d\n", + cur_index, rec->lrh_type, rec->lrh_len); + } + out += l; + remains -= l; + if (remains <= 0) { + CERROR("not enough space for print log records\n"); + RETURN(-LLOG_EEMPTY); + } + + RETURN(0); +} +static int llog_remove_log(const struct lu_env *env, struct llog_handle *cat, + struct llog_logid *logid) +{ + struct llog_handle *log; + int rc; + + ENTRY; + + rc = llog_cat_id2handle(env, cat, &log, logid); + if (rc) { + CDEBUG(D_IOCTL, "cannot find log #"DOSTID"#%08x\n", + POSTID(&logid->lgl_oi), logid->lgl_ogen); + RETURN(-ENOENT); + } + + rc = llog_destroy(env, log); + if (rc) { + CDEBUG(D_IOCTL, "cannot destroy log\n"); + GOTO(out, rc); + } + llog_cat_cleanup(env, cat, log, log->u.phd.phd_cookie.lgc_index); +out: + llog_handle_put(log); + RETURN(rc); + +} + +static int llog_delete_cb(const struct lu_env *env, struct llog_handle *handle, + struct llog_rec_hdr *rec, void *data) +{ + struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; + int rc; + + ENTRY; + if (rec->lrh_type != LLOG_LOGID_MAGIC) + RETURN(-EINVAL); + rc = llog_remove_log(env, handle, &lir->lid_id); + + RETURN(rc); +} + + +int llog_ioctl(const struct lu_env *env, struct llog_ctxt *ctxt, int cmd, + struct obd_ioctl_data *data) +{ + struct llog_logid logid; + int rc = 0; + struct llog_handle *handle = NULL; + + ENTRY; + + if (*data->ioc_inlbuf1 == '#') { + rc = str2logid(&logid, data->ioc_inlbuf1, data->ioc_inllen1); + if (rc) + RETURN(rc); + rc = llog_open(env, ctxt, &handle, &logid, NULL, + LLOG_OPEN_EXISTS); + if (rc) + RETURN(rc); + } else if (*data->ioc_inlbuf1 == '$') { + char *name = data->ioc_inlbuf1 + 1; + + rc = llog_open(env, ctxt, &handle, NULL, name, + LLOG_OPEN_EXISTS); + if (rc) + RETURN(rc); + } else { + RETURN(-EINVAL); + } + + rc = llog_init_handle(env, handle, 0, NULL); + if (rc) + GOTO(out_close, rc = -ENOENT); + + switch (cmd) { + case OBD_IOC_LLOG_INFO: { + int l; + int remains = data->ioc_inllen2 + + cfs_size_round(data->ioc_inllen1); + char *out = data->ioc_bulk; + + l = snprintf(out, remains, + "logid: #"DOSTID"#%08x\n" + "flags: %x (%s)\n" + "records count: %d\n" + "last index: %d\n", + POSTID(&handle->lgh_id.lgl_oi), + handle->lgh_id.lgl_ogen, + handle->lgh_hdr->llh_flags, + handle->lgh_hdr->llh_flags & + LLOG_F_IS_CAT ? "cat" : "plain", + handle->lgh_hdr->llh_count, + handle->lgh_last_idx); + out += l; + remains -= l; + if (remains <= 0) { + CERROR("%s: not enough space for log header info\n", + ctxt->loc_obd->obd_name); + rc = -ENOSPC; + } + break; + } + case OBD_IOC_LLOG_CHECK: + LASSERT(data->ioc_inllen1 > 0); + rc = llog_process(env, handle, llog_check_cb, data, NULL); + if (rc == -LLOG_EEMPTY) + rc = 0; + else if (rc) + GOTO(out_close, rc); + break; + case OBD_IOC_LLOG_PRINT: + LASSERT(data->ioc_inllen1 > 0); + rc = llog_process(env, handle, llog_print_cb, data, NULL); + if (rc == -LLOG_EEMPTY) + rc = 0; + else if (rc) + GOTO(out_close, rc); + break; + case OBD_IOC_LLOG_CANCEL: { + struct llog_cookie cookie; + struct llog_logid plain; + char *endp; + + cookie.lgc_index = simple_strtoul(data->ioc_inlbuf3, &endp, 0); + if (*endp != '\0') + GOTO(out_close, rc = -EINVAL); + + if (handle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) { + rc = llog_cancel_rec(NULL, handle, cookie.lgc_index); + GOTO(out_close, rc); + } else if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) { + GOTO(out_close, rc = -EINVAL); + } + + if (data->ioc_inlbuf2 == NULL) /* catalog but no logid */ + GOTO(out_close, rc = -ENOTTY); + + rc = str2logid(&plain, data->ioc_inlbuf2, data->ioc_inllen2); + if (rc) + GOTO(out_close, rc); + cookie.lgc_lgl = plain; + rc = llog_cat_cancel_records(env, handle, 1, &cookie); + if (rc) + GOTO(out_close, rc); + break; + } + case OBD_IOC_LLOG_REMOVE: { + struct llog_logid plain; + + if (handle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) { + rc = llog_destroy(env, handle); + GOTO(out_close, rc); + } else if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) { + GOTO(out_close, rc = -EINVAL); + } + + if (data->ioc_inlbuf2 > 0) { + /* remove indicate log from the catalog */ + rc = str2logid(&plain, data->ioc_inlbuf2, + data->ioc_inllen2); + if (rc) + GOTO(out_close, rc); + rc = llog_remove_log(env, handle, &plain); + } else { + /* remove all the log of the catalog */ + rc = llog_process(env, handle, llog_delete_cb, NULL, + NULL); + if (rc) + GOTO(out_close, rc); + } + break; + } + default: + CERROR("%s: Unknown ioctl cmd %#x\n", + ctxt->loc_obd->obd_name, cmd); + GOTO(out_close, rc = -ENOTTY); + } + +out_close: + if (handle->lgh_hdr && + handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) + llog_cat_close(env, handle); + else + llog_close(env, handle); + RETURN(rc); +} +EXPORT_SYMBOL(llog_ioctl); |