*
* Copyright (c) 2003 Cluster File Systems, Inc.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * You may have signed or agreed to another license before downloading
+ * this software. If so, you are bound by the terms and conditions
+ * of that agreement, and the following does not apply to you. See the
+ * LICENSE file included with this distribution for more information.
*
- * Lustre 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.
+ * If you did not agree to a different license, then this copy of Lustre
+ * is open source software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * In either case, Lustre 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
+ * license text for more details.
*/
#define DEBUG_SUBSYSTEM S_MDS
+#ifdef HAVE_KERNEL_CONFIG_H
#include <linux/config.h>
+#endif
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <asm/uaccess.h>
#include <linux/slab.h>
#include <asm/segment.h>
-#include <linux/random.h>
-
-#include <linux/obd_support.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_sec.h>
-#include <linux/lustre_ucache.h>
-#include <linux/lustre_gs.h>
-#include <linux/lustre_fsfilt.h>
+#include <obd_support.h>
+#include <lustre_lib.h>
#include "mds_internal.h"
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4)
-struct group_info *groups_alloc(int ngroups)
-{
- struct group_info *ginfo;
-
- LASSERT(ngroups <= NGROUPS_SMALL);
-
- OBD_ALLOC(ginfo, sizeof(*ginfo) + 1 * sizeof(gid_t *));
- if (!ginfo)
- return NULL;
- ginfo->ngroups = ngroups;
- ginfo->nblocks = 1;
- ginfo->blocks[0] = ginfo->small_block;
- atomic_set(&ginfo->usage, 1);
-
- return ginfo;
-}
-
-void groups_free(struct group_info *ginfo)
+void mds_pack_inode2fid(struct ll_fid *fid, struct inode *inode)
{
- LASSERT(ginfo->ngroups <= NGROUPS_SMALL);
- LASSERT(ginfo->nblocks == 1);
- LASSERT(ginfo->blocks[0] == ginfo->small_block);
-
- OBD_FREE(ginfo, sizeof(*ginfo) + 1 * sizeof(gid_t *));
-}
-
-/* for 2.4 the group number is small, so simply search the
- * whole array.
- */
-int groups_search(struct group_info *ginfo, gid_t grp)
-{
- int i;
-
- if (!ginfo)
- return 0;
-
- for (i = 0; i < ginfo->ngroups; i++)
- if (GROUP_AT(ginfo, i) == grp)
- return 1;
- return 0;
-}
-
-#else /* >= 2.6.4 */
-
-void groups_sort(struct group_info *ginfo)
-{
- int base, max, stride;
- int gidsetsize = ginfo->ngroups;
-
- for (stride = 1; stride < gidsetsize; stride = 3 * stride + 1)
- ; /* nothing */
- stride /= 3;
-
- while (stride) {
- max = gidsetsize - stride;
- for (base = 0; base < max; base++) {
- int left = base;
- int right = left + stride;
- gid_t tmp = GROUP_AT(ginfo, right);
-
- while (left >= 0 && GROUP_AT(ginfo, left) > tmp) {
- GROUP_AT(ginfo, right) =
- GROUP_AT(ginfo, left);
- right = left;
- left -= stride;
- }
- GROUP_AT(ginfo, right) = tmp;
- }
- stride /= 3;
- }
-}
-
-int groups_search(struct group_info *ginfo, gid_t grp)
-{
- int left, right;
-
- if (!ginfo)
- return 0;
-
- left = 0;
- right = ginfo->ngroups;
- while (left < right) {
- int mid = (left + right) / 2;
- int cmp = grp - GROUP_AT(ginfo, mid);
- if (cmp > 0)
- left = mid + 1;
- else if (cmp < 0)
- right = mid;
- else
- return 1;
- }
- return 0;
-}
-#endif
-
-void groups_from_buffer(struct group_info *ginfo, __u32 *gids)
-{
- int i, ngroups = ginfo->ngroups;
-
- for (i = 0; i < ginfo->nblocks; i++) {
- int count = min(NGROUPS_PER_BLOCK, ngroups);
-
- memcpy(ginfo->blocks[i], gids, count * sizeof(__u32));
- gids += NGROUPS_PER_BLOCK;
- ngroups -= count;
- }
-}
-
-void mds_pack_dentry2id(struct obd_device *obd,
- struct lustre_id *id,
- struct dentry *dentry,
- int fid)
-{
- id_ino(id) = dentry->d_inum;
- id_gen(id) = dentry->d_generation;
-
- if (fid) {
- id_fid(id) = dentry->d_fid;
- id_group(id) = dentry->d_mdsnum;
- }
-}
-
-void mds_pack_dentry2body(struct obd_device *obd,
- struct mds_body *b,
- struct dentry *dentry,
- int fid)
-{
- b->valid |= OBD_MD_FLID | OBD_MD_FLGENER |
- OBD_MD_MDS;
-
- if (fid)
- b->valid |= OBD_MD_FID;
-
- mds_pack_dentry2id(obd, &b->id1, dentry, fid);
-}
-
-int mds_pack_inode2id(struct obd_device *obd,
- struct lustre_id *id,
- struct inode *inode,
- int fid)
-{
- int rc = 0;
- ENTRY;
-
- if (fid) {
- /* we have to avoid deadlock. */
- if (!down_trylock(&inode->i_sem)) {
- rc = mds_read_inode_sid(obd, inode, id);
- up(&inode->i_sem);
- } else {
- rc = mds_read_inode_sid(obd, inode, id);
- }
- }
-
- if (rc == 0) {
- id_ino(id) = inode->i_ino;
- id_gen(id) = inode->i_generation;
- id_type(id) = (S_IFMT & inode->i_mode);
- }
- RETURN(rc);
-}
-
-void mds_inode2id(struct obd_device *obd, struct lustre_id *id,
- struct inode *inode, __u64 fid)
-{
- struct mds_obd *mds = &obd->u.mds;
- ENTRY;
-
- LASSERT(inode != NULL);
- LASSERT(id != NULL);
- LASSERT(fid != 0);
-
- id_fid(id) = fid;
- id_ino(id) = inode->i_ino;
- id_group(id) = mds->mds_num;
- id_gen(id) = inode->i_generation;
- id_type(id) = (S_IFMT & inode->i_mode);
-
- EXIT;
-}
-
-int mds_pack_gskey(struct obd_device *obd, struct lustre_msg *repmsg,
- int *offset, struct mds_body *body, struct inode *inode)
-{
- struct crypto_key_md *md_key;
- struct crypto_key *ckey;
- __u32 buflen, *sizep;
- void *buf;
- int size, rc = 0;
- ENTRY;
-
- sizep = lustre_msg_buf(repmsg, (*offset)++, 4);
- if (!sizep) {
- CERROR("can't locate returned ckey size buf\n");
- RETURN(-EPROTO);
- }
- *sizep = cpu_to_le32(sizeof(*ckey));
-
- OBD_ALLOC(md_key, sizeof(*md_key));
- if (!md_key)
- RETURN(-ENOMEM);
-
- buflen = repmsg->buflens[*offset];
- buf = lustre_msg_buf(repmsg, (*offset)++, buflen);
-
- size = fsfilt_get_md(obd, inode, md_key, sizeof(*md_key),
- EA_KEY);
- if (size <= 0) {
- if (size < 0)
- CERROR("Can not get gskey from MDS ino %lu rc %d\n",
- inode->i_ino, size);
- GOTO(out, rc = size);
- }
- if (le32_to_cpu(md_key->md_magic) != MD_KEY_MAGIC) {
- CDEBUG(D_INFO, "given match %x != magic %x\n",
- md_key->md_magic, MD_KEY_MAGIC);
- GOTO(out, rc = 0);
- }
-
- CDEBUG(D_INFO, "get key %s mac %s for ino %lu size %d \n",
- md_key->md_ck.ck_key, md_key->md_ck.ck_mac, inode->i_ino, size);
- ckey=(struct crypto_key*)buf;
-
- memcpy(ckey, &md_key->md_ck, sizeof(*ckey));
- body->valid |= OBD_MD_FLKEY;
-out:
- OBD_FREE(md_key, sizeof(*md_key));
- RETURN(rc);
-}
-
-static int mds_get_gskey(struct inode *inode, struct crypto_key *ckey)
-{
- LASSERT(ckey);
- /*tmp create gs key here*/
- LASSERT(ckey->ck_type == MKS_TYPE);
- get_random_bytes(ckey->ck_key, KEY_SIZE);
- RETURN(0);
-}
-
-int mds_set_gskey(struct obd_device *obd, void *handle,
- struct inode *inode, void *key, int key_len,
- int valid)
-{
- struct crypto_key_md *md_key = NULL;
- struct crypto_key *ckey = (struct crypto_key *)key;
- int rc = 0;
- ENTRY;
-
- if (!ckey)
- RETURN(0);
-
- LASSERT(ckey->ck_type == MKS_TYPE || ckey->ck_type == GKS_TYPE);
-
- OBD_ALLOC(md_key, sizeof(*md_key));
- if (ckey->ck_type == MKS_TYPE)
- mds_get_gskey(inode, ckey);
-
- rc = fsfilt_get_md(obd, inode, md_key, sizeof(*md_key),
- EA_KEY);
- if (rc < 0)
- GOTO(free, rc);
- LASSERT(le32_to_cpu(md_key->md_magic) == MD_KEY_MAGIC ||
- md_key->md_magic == 0);
-
- if (le32_to_cpu(md_key->md_magic) == MD_KEY_MAGIC) {
- CDEBUG(D_INFO, "reset key %s mac %s", md_key->md_ck.ck_mac,
- md_key->md_ck.ck_key);
- }
-
- md_key->md_magic = cpu_to_le32(MD_KEY_MAGIC);
- /*get key and mac from request buffer*/
- if (valid & ATTR_MAC) {
- memcpy(md_key->md_ck.ck_mac, ckey->ck_mac, MAC_SIZE);
- CDEBUG(D_INFO, "set mac %s for ino %lu \n",
- md_key->md_ck.ck_mac, inode->i_ino);
- }
- if (valid & ATTR_KEY) {
- memcpy(md_key->md_ck.ck_key, ckey->ck_key, KEY_SIZE);
- CDEBUG(D_INFO, "set key %s for ino %lu \n",
- md_key->md_ck.ck_key, inode->i_ino);
- }
- rc = fsfilt_set_md(obd, inode, handle, md_key, sizeof(*md_key), EA_KEY);
-free:
- if (md_key)
- OBD_FREE(md_key, sizeof(*md_key));
- RETURN(rc);
-}
-
-int mds_set_crypto_type(struct obd_device *obd, void *val, __u32 vallen)
-{
- struct mds_obd *mds = &obd->u.mds;
- ENTRY;
- if (vallen >= strlen("mks") &&
- memcmp(val, "mks", vallen) == 0) {
- mds->mds_crypto_type = MKS_TYPE;
- CDEBUG(D_IOCTL, "mks type\n");
- }
- if (vallen >= strlen("gks") &&
- memcmp(val, "gks", vallen) == 0) {
- mds->mds_crypto_type = GKS_TYPE;
- CDEBUG(D_IOCTL, "gks type \n");
- }
- RETURN(0);
+ fid->id = inode->i_ino;
+ fid->generation = inode->i_generation;
+ fid->f_type = (S_IFMT & inode->i_mode);
}
/* Note that we can copy all of the fields, just some will not be "valid" */
-void mds_pack_inode2body(struct obd_device *obd, struct mds_body *b,
- struct inode *inode, int fid)
+void mds_pack_inode2body(struct mds_body *b, struct inode *inode)
{
b->valid |= OBD_MD_FLID | OBD_MD_FLCTIME | OBD_MD_FLUID |
- OBD_MD_FLGID | OBD_MD_FLFLAGS | OBD_MD_FLTYPE |
- OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLGENER |
- OBD_MD_FLATIME | OBD_MD_FLMTIME; /* bug 2020 */
+ OBD_MD_FLGID | OBD_MD_FLFLAGS | OBD_MD_FLTYPE |
+ OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLGENER |
+ OBD_MD_FLATIME | OBD_MD_FLMTIME; /* bug 2020 */
- if (!S_ISREG(inode->i_mode)) {
- b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
- OBD_MD_FLATIME | OBD_MD_FLMTIME |
- OBD_MD_FLRDEV;
- }
+ if (!S_ISREG(inode->i_mode))
+ b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLATIME |
+ OBD_MD_FLMTIME | OBD_MD_FLRDEV;
+
+ b->ino = inode->i_ino;
b->atime = LTIME_S(inode->i_atime);
b->mtime = LTIME_S(inode->i_mtime);
b->ctime = LTIME_S(inode->i_ctime);
b->blocks = inode->i_blocks;
b->uid = inode->i_uid;
b->gid = inode->i_gid;
- b->flags = inode->i_flags;
+ b->flags = ll_inode_to_ext_flags(b->flags, inode->i_flags);
b->rdev = inode->i_rdev;
-
/* Return the correct link count for orphan inodes */
- if (mds_inode_is_orphan(inode)) {
- b->nlink = 0;
- } else if (S_ISDIR(inode->i_mode)) {
- b->nlink = 1;
- } else {
- b->nlink = inode->i_nlink;
- }
-
- if (fid)
- b->valid |= OBD_MD_FID;
-
- mds_pack_inode2id(obd, &b->id1, inode, fid);
+ b->nlink = mds_inode_is_orphan(inode) ? 0 : inode->i_nlink;
+ b->generation = inode->i_generation;
+ b->suppgid = -1;
}
/* unpacking */
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_id1 = &rec->sa_id;
- r->ur_flags = rec->sa_flags;
+ r->ur_uc.luc_fsuid = rec->sa_fsuid;
+ r->ur_uc.luc_fsgid = rec->sa_fsgid;
+ r->ur_uc.luc_cap = rec->sa_cap;
+ r->ur_uc.luc_suppgid1 = rec->sa_suppgid;
+ r->ur_uc.luc_suppgid2 = -1;
+ r->ur_fid1 = &rec->sa_fid;
attr->ia_valid = rec->sa_valid;
attr->ia_mode = rec->sa_mode;
attr->ia_uid = rec->sa_uid;
LTIME_S(attr->ia_atime) = rec->sa_atime;
LTIME_S(attr->ia_mtime) = rec->sa_mtime;
LTIME_S(attr->ia_ctime) = rec->sa_ctime;
- attr->ia_attr_flags = rec->sa_attr_flags;
+ r->ur_flags = rec->sa_attr_flags;
- LASSERT_REQSWAB(req, offset + 1);
- if (req->rq_reqmsg->bufcount > offset + 1) {
- r->ur_eadata = lustre_msg_buf(req->rq_reqmsg,
- offset + 1, 0);
+ LASSERT_REQSWAB (req, offset + 1);
+ if (lustre_msg_bufcount(req->rq_reqmsg) > offset + 1) {
+ r->ur_eadata = lustre_msg_buf(req->rq_reqmsg, offset + 1, 0);
if (r->ur_eadata == NULL)
- RETURN (-EFAULT);
- r->ur_eadatalen = req->rq_reqmsg->buflens[offset + 1];
- }
-
- if (req->rq_reqmsg->bufcount > offset + 2) {
- r->ur_ea2data = lustre_msg_buf(req->rq_reqmsg, offset + 2, 0);
- if (r->ur_ea2data == NULL)
- RETURN (-EFAULT);
-
- r->ur_ea2datalen = req->rq_reqmsg->buflens[offset + 2];
+ RETURN(-EFAULT);
+ r->ur_eadatalen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
}
- if (req->rq_reqmsg->bufcount > offset + 3) {
- r->ur_ea3data = lustre_msg_buf(req->rq_reqmsg, offset + 3, 0);
- if (r->ur_ea3data == NULL)
+ if (lustre_msg_bufcount(req->rq_reqmsg) > offset + 2) {
+ r->ur_logcookies = lustre_msg_buf(req->rq_reqmsg, offset + 2,0);
+ if (r->ur_eadata == NULL)
RETURN (-EFAULT);
- r->ur_ea3datalen = req->rq_reqmsg->buflens[offset + 3];
+ r->ur_cookielen = lustre_msg_buflen(req->rq_reqmsg, offset + 2);
}
RETURN(0);
struct mds_rec_create *rec;
ENTRY;
- rec = lustre_swab_reqbuf(req, offset, sizeof(*rec),
+ rec = lustre_swab_reqbuf(req, offset, sizeof (*rec),
lustre_swab_mds_rec_create);
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_id1 = &rec->cr_id;
- r->ur_id2 = &rec->cr_replayid;
+ r->ur_uc.luc_fsuid = rec->cr_fsuid;
+ r->ur_uc.luc_fsgid = rec->cr_fsgid;
+ r->ur_uc.luc_cap = rec->cr_cap;
+ r->ur_uc.luc_suppgid1 = rec->cr_suppgid;
+ r->ur_uc.luc_suppgid2 = -1;
+ r->ur_fid1 = &rec->cr_fid;
+ r->ur_fid2 = &rec->cr_replayfid;
r->ur_mode = rec->cr_mode;
r->ur_rdev = rec->cr_rdev;
r->ur_time = rec->cr_time;
LASSERT_REQSWAB(req, offset + 1);
r->ur_name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
if (r->ur_name == NULL)
- RETURN(-EFAULT);
- r->ur_namelen = req->rq_reqmsg->buflens[offset + 1];
+ RETURN (-EFAULT);
+ r->ur_namelen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
LASSERT_REQSWAB(req, offset + 2);
- if (req->rq_reqmsg->bufcount > offset + 2) {
- if (S_ISLNK(r->ur_mode)) {
- r->ur_tgt = lustre_msg_string(req->rq_reqmsg,
- offset + 2, 0);
- if (r->ur_tgt == NULL)
- RETURN(-EFAULT);
- r->ur_tgtlen = req->rq_reqmsg->buflens[offset + 2];
- } else if (S_ISDIR(r->ur_mode) ) {
- /* Stripe info for mkdir - just a 16bit integer */
- if (req->rq_reqmsg->buflens[offset + 2] != 2) {
- CERROR("mkdir stripe info does not match "
- "expected size %d vs 2\n",
- req->rq_reqmsg->buflens[offset + 2]);
- RETURN(-EINVAL);
- }
- r->ur_eadata = lustre_swab_buf(req->rq_reqmsg,
- offset + 2, 2,
- __swab16s);
- r->ur_eadatalen = req->rq_reqmsg->buflens[offset + 2];
- } else if (S_ISREG(r->ur_mode)){
- r->ur_eadata = lustre_msg_buf(req->rq_reqmsg,
- offset + 2, 0);
- r->ur_eadatalen = req->rq_reqmsg->buflens[offset + 2];
- } else {
- /* Hm, no other users so far? */
- LBUG();
- }
+ if (lustre_msg_bufcount(req->rq_reqmsg) > offset + 2) {
+ /* NB for now, we only seem to pass NULL terminated symlink
+ * target strings here. If this ever changes, we'll have
+ * to stop checking for a buffer filled completely with a
+ * NULL terminated string here, and make the callers check
+ * depending on what they expect. We should probably stash
+ * it in r->ur_eadata in that case, so it's obvious... -eeb
+ */
+ r->ur_tgt = lustre_msg_string(req->rq_reqmsg, offset + 2, 0);
+ if (r->ur_tgt == NULL)
+ RETURN (-EFAULT);
+ r->ur_tgtlen = lustre_msg_buflen(req->rq_reqmsg, offset + 2);
}
RETURN(0);
}
struct mds_rec_link *rec;
ENTRY;
- rec = lustre_swab_reqbuf(req, offset, sizeof(*rec),
+ rec = lustre_swab_reqbuf(req, offset, sizeof (*rec),
lustre_swab_mds_rec_link);
if (rec == NULL)
- RETURN(-EFAULT);
+ RETURN (-EFAULT);
- r->ur_id1 = &rec->lk_id1;
- r->ur_id2 = &rec->lk_id2;
+ r->ur_uc.luc_fsuid = rec->lk_fsuid;
+ r->ur_uc.luc_fsgid = rec->lk_fsgid;
+ r->ur_uc.luc_cap = rec->lk_cap;
+ r->ur_uc.luc_suppgid1 = rec->lk_suppgid1;
+ r->ur_uc.luc_suppgid2 = rec->lk_suppgid2;
+ r->ur_fid1 = &rec->lk_fid1;
+ r->ur_fid2 = &rec->lk_fid2;
r->ur_time = rec->lk_time;
- r->ur_flags = rec->lk_flags;
LASSERT_REQSWAB(req, offset + 1);
r->ur_name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
if (r->ur_name == NULL)
- RETURN(-EFAULT);
- r->ur_namelen = req->rq_reqmsg->buflens[offset + 1];
+ RETURN (-EFAULT);
+ r->ur_namelen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
RETURN(0);
}
if (rec == NULL)
RETURN(-EFAULT);
+ r->ur_uc.luc_fsuid = rec->ul_fsuid;
+ r->ur_uc.luc_fsgid = rec->ul_fsgid;
+ r->ur_uc.luc_cap = rec->ul_cap;
+ r->ur_uc.luc_suppgid1 = rec->ul_suppgid;
+ r->ur_uc.luc_suppgid2 = -1;
r->ur_mode = rec->ul_mode;
- r->ur_id1 = &rec->ul_id1;
- r->ur_id2 = &rec->ul_id2;
+ r->ur_fid1 = &rec->ul_fid1;
+ r->ur_fid2 = &rec->ul_fid2;
r->ur_time = rec->ul_time;
- r->ur_flags = rec->ul_flags;
LASSERT_REQSWAB(req, offset + 1);
r->ur_name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
if (r->ur_name == NULL)
RETURN(-EFAULT);
- r->ur_namelen = req->rq_reqmsg->buflens[offset + 1];
+ r->ur_namelen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
RETURN(0);
}
if (rec == NULL)
RETURN(-EFAULT);
- r->ur_id1 = &rec->rn_id1;
- r->ur_id2 = &rec->rn_id2;
+ r->ur_uc.luc_fsuid = rec->rn_fsuid;
+ r->ur_uc.luc_fsgid = rec->rn_fsgid;
+ r->ur_uc.luc_cap = rec->rn_cap;
+ r->ur_uc.luc_suppgid1 = rec->rn_suppgid1;
+ r->ur_uc.luc_suppgid2 = rec->rn_suppgid2;
+ r->ur_fid1 = &rec->rn_fid1;
+ r->ur_fid2 = &rec->rn_fid2;
r->ur_time = rec->rn_time;
- r->ur_flags = rec->rn_flags;
- LASSERT_REQSWAB(req, offset + 1);
+ LASSERT_REQSWAB (req, offset + 1);
r->ur_name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
if (r->ur_name == NULL)
RETURN(-EFAULT);
- r->ur_namelen = req->rq_reqmsg->buflens[offset + 1];
+ r->ur_namelen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
- LASSERT_REQSWAB(req, offset + 2);
+ LASSERT_REQSWAB (req, offset + 2);
r->ur_tgt = lustre_msg_string(req->rq_reqmsg, offset + 2, 0);
if (r->ur_tgt == NULL)
RETURN(-EFAULT);
- r->ur_tgtlen = req->rq_reqmsg->buflens[offset + 2];
+ r->ur_tgtlen = lustre_msg_buflen(req->rq_reqmsg, offset + 2);
RETURN(0);
}
struct mds_rec_create *rec;
ENTRY;
- rec = lustre_swab_reqbuf(req, offset, sizeof (*rec),
+ rec = lustre_swab_reqbuf(req, offset, sizeof(*rec),
lustre_swab_mds_rec_create);
if (rec == NULL)
RETURN(-EFAULT);
- r->ur_id1 = &rec->cr_id;
- r->ur_id2 = &rec->cr_replayid;
+ r->ur_uc.luc_fsuid = rec->cr_fsuid;
+ r->ur_uc.luc_fsgid = rec->cr_fsgid;
+ r->ur_uc.luc_cap = rec->cr_cap;
+ r->ur_uc.luc_suppgid1 = rec->cr_suppgid;
+ r->ur_uc.luc_suppgid2 = -1;
+ r->ur_fid1 = &rec->cr_fid;
+ r->ur_fid2 = &rec->cr_replayfid;
r->ur_mode = rec->cr_mode;
r->ur_rdev = rec->cr_rdev;
r->ur_time = rec->cr_time;
r->ur_flags = rec->cr_flags;
- r->ur_ioepoch = rec->cr_ioepoch;
LASSERT_REQSWAB(req, offset + 1);
r->ur_name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
-
if (r->ur_name == NULL)
RETURN(-EFAULT);
- r->ur_namelen = req->rq_reqmsg->buflens[offset + 1];
+ r->ur_namelen = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
LASSERT_REQSWAB(req, offset + 2);
- if (req->rq_reqmsg->bufcount > offset + 2) {
+ if (lustre_msg_bufcount(req->rq_reqmsg) > offset + 2) {
r->ur_eadata = lustre_msg_buf(req->rq_reqmsg, offset + 2, 0);
if (r->ur_eadata == NULL)
- RETURN(-EFAULT);
- r->ur_eadatalen = req->rq_reqmsg->buflens[offset + 2];
- }
-
- if (rec->cr_flags & MDS_OPEN_HAS_KEY) {
- LASSERT(req->rq_reqmsg->bufcount > offset + 3);
- r->ur_ea2data = lustre_msg_buf(req->rq_reqmsg, offset + 3, 0);
- r->ur_ea2datalen = req->rq_reqmsg->buflens[offset + 3];
+ RETURN (-EFAULT);
+ r->ur_eadatalen = lustre_msg_buflen(req->rq_reqmsg, offset + 2);
}
RETURN(0);
}
typedef int (*update_unpacker)(struct ptlrpc_request *req, int offset,
struct mds_update_record *r);
-static update_unpacker mds_unpackers[REINT_MAX + 1] = {
+static update_unpacker mds_unpackers[REINT_MAX] = {
[REINT_SETATTR] mds_setattr_unpack,
[REINT_CREATE] mds_create_unpack,
[REINT_LINK] mds_link_unpack,
int mds_update_unpack(struct ptlrpc_request *req, int offset,
struct mds_update_record *rec)
{
- __u32 *opcodep;
- __u32 opcode;
+ mds_reint_t opcode, *opcodep;
int rc;
ENTRY;
- /* NB don't lustre_swab_reqbuf() here. We're just taking a peek and we
- * want to leave it to the specific unpacker once we've identified the
- * message type. */
- opcodep = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*opcodep));
+ /* NB don't lustre_swab_reqbuf() here. We're just taking a peek
+ * and we want to leave it to the specific unpacker once we've
+ * identified the message type */
+ opcodep = lustre_msg_buf(req->rq_reqmsg, offset, sizeof (*opcodep));
if (opcodep == NULL)
RETURN(-EFAULT);
if (lustre_msg_swabbed(req->rq_reqmsg))
__swab32s(&opcode);
- if (opcode > REINT_MAX ||
- mds_unpackers[opcode] == NULL) {
+ if (opcode >= REINT_MAX || mds_unpackers[opcode] == NULL) {
CERROR("Unexpected opcode %d\n", opcode);
RETURN(-EFAULT);
}
- rec->ur_id1 = NULL;
- rec->ur_id2 = NULL;
rec->ur_opcode = opcode;
-
rc = mds_unpackers[opcode](req, offset, rec);
-
-#if CRAY_PORTALS
- rec->ur_fsuid = req->rq_uid;
-#endif
- RETURN(rc);
-}
-
-/*
- * here we take simple rule: once uid/fsuid is root, we also squash
- * the gid/fsgid, don't care setuid/setgid attributes.
- */
-static
-int mds_squash_root(struct mds_obd *mds, struct mds_req_sec_desc *rsd,
- ptl_nid_t *peernid)
-{
- if (!mds->mds_squash_uid || *peernid == mds->mds_nosquash_nid)
- return 0;
-
- if (rsd->rsd_uid && rsd->rsd_fsuid)
- return 0;
-
- CDEBUG(D_SEC, "squash req from "LPX64":"
- "(%u:%u-%u:%u/%x)=>(%u:%u-%u:%u/%x)\n", *peernid,
- rsd->rsd_uid, rsd->rsd_gid,
- rsd->rsd_fsuid, rsd->rsd_fsgid, rsd->rsd_cap,
- rsd->rsd_uid ? rsd->rsd_uid : mds->mds_squash_uid,
- rsd->rsd_uid ? rsd->rsd_gid : mds->mds_squash_gid,
- rsd->rsd_fsuid ? rsd->rsd_fsuid : mds->mds_squash_uid,
- rsd->rsd_fsuid ? rsd->rsd_fsgid : mds->mds_squash_gid,
- rsd->rsd_cap & ~CAP_FS_MASK);
-
- if (rsd->rsd_uid == 0) {
- rsd->rsd_uid = mds->mds_squash_uid;
- rsd->rsd_gid = mds->mds_squash_gid;
- }
- if (rsd->rsd_fsuid == 0) {
- rsd->rsd_fsuid = mds->mds_squash_uid;
- rsd->rsd_fsgid = mds->mds_squash_gid;
- }
- rsd->rsd_cap &= ~CAP_FS_MASK;
-
- return 1;
-}
-
-/********************************
- * MDS uid/gid mapping handling *
- ********************************/
-
-static
-struct mds_idmap_entry* idmap_alloc_entry(__u32 rmt_id, __u32 lcl_id)
-{
- struct mds_idmap_entry *e;
-
- OBD_ALLOC(e, sizeof(*e));
- if (!e)
- return NULL;
-
- INIT_LIST_HEAD(&e->rmt_hash);
- INIT_LIST_HEAD(&e->lcl_hash);
- atomic_set(&e->refcount, 1);
- e->rmt_id = rmt_id;
- e->lcl_id = lcl_id;
-
- return e;
-}
-
-void idmap_free_entry(struct mds_idmap_entry *e)
-{
- if (!list_empty(&e->rmt_hash))
- list_del(&e->rmt_hash);
- if (!list_empty(&e->lcl_hash))
- list_del(&e->lcl_hash);
- OBD_FREE(e, sizeof(*e));
-}
-
-static
-int idmap_insert_entry(struct list_head *rmt_hash, struct list_head *lcl_hash,
- struct mds_idmap_entry *new, const char *warn_msg)
-{
- struct list_head *rmt_head = &rmt_hash[MDS_IDMAP_HASHFUNC(new->rmt_id)];
- struct list_head *lcl_head = &lcl_hash[MDS_IDMAP_HASHFUNC(new->lcl_id)];
- struct mds_idmap_entry *e;
-
- list_for_each_entry(e, rmt_head, rmt_hash) {
- if (e->rmt_id == new->rmt_id &&
- e->lcl_id == new->lcl_id) {
- atomic_inc(&e->refcount);
- return 1;
- }
- if (e->rmt_id == new->rmt_id && warn_msg)
- CWARN("%s: rmt id %u already map to %u (new %u)\n",
- warn_msg, e->rmt_id, e->lcl_id, new->lcl_id);
- if (e->lcl_id == new->lcl_id && warn_msg)
- CWARN("%s: lcl id %u already be mapped from %u "
- "(new %u)\n", warn_msg,
- e->lcl_id, e->rmt_id, new->rmt_id);
- }
- list_add_tail(rmt_head, &new->rmt_hash);
- list_add_tail(lcl_head, &new->lcl_hash);
- return 0;
-}
-
-static
-int idmap_remove_entry(struct list_head *rmt_hash, struct list_head *lcl_hash,
- __u32 rmt_id, __u32 lcl_id)
-{
- struct list_head *rmt_head = &rmt_hash[MDS_IDMAP_HASHFUNC(rmt_id)];
- struct mds_idmap_entry *e;
-
- list_for_each_entry(e, rmt_head, rmt_hash) {
- if (e->rmt_id == rmt_id && e->lcl_id == lcl_id) {
- if (atomic_dec_and_test(&e->refcount)) {
- list_del(&e->rmt_hash);
- list_del(&e->lcl_hash);
- OBD_FREE(e, sizeof(*e));
- return 0;
- } else
- return 1;
- }
- }
- return -ENOENT;
-}
-
-int mds_idmap_add(struct mds_idmap_table *tbl,
- uid_t rmt_uid, uid_t lcl_uid,
- gid_t rmt_gid, gid_t lcl_gid)
-{
- struct mds_idmap_entry *ue, *ge;
- ENTRY;
-
- if (!tbl)
- RETURN(-EPERM);
-
- ue = idmap_alloc_entry(rmt_uid, lcl_uid);
- if (!ue)
- RETURN(-ENOMEM);
- ge = idmap_alloc_entry(rmt_gid, lcl_gid);
- if (!ge) {
- idmap_free_entry(ue);
- RETURN(-ENOMEM);
- }
-
- spin_lock(&tbl->mit_lock);
-
- if (idmap_insert_entry(tbl->mit_idmaps[MDS_RMT_UIDMAP_IDX],
- tbl->mit_idmaps[MDS_LCL_UIDMAP_IDX],
- ue, "UID mapping")) {
- idmap_free_entry(ue);
- }
-
- if (idmap_insert_entry(tbl->mit_idmaps[MDS_RMT_GIDMAP_IDX],
- tbl->mit_idmaps[MDS_LCL_GIDMAP_IDX],
- ge, "GID mapping")) {
- idmap_free_entry(ge);
- }
-
- spin_unlock(&tbl->mit_lock);
- RETURN(0);
-}
-
-int mds_idmap_del(struct mds_idmap_table *tbl,
- uid_t rmt_uid, uid_t lcl_uid,
- gid_t rmt_gid, gid_t lcl_gid)
-{
- ENTRY;
-
- if (!tbl)
- RETURN(0);
-
- spin_lock(&tbl->mit_lock);
- idmap_remove_entry(tbl->mit_idmaps[MDS_RMT_UIDMAP_IDX],
- tbl->mit_idmaps[MDS_LCL_UIDMAP_IDX],
- rmt_uid, lcl_uid);
- idmap_remove_entry(tbl->mit_idmaps[MDS_RMT_GIDMAP_IDX],
- tbl->mit_idmaps[MDS_LCL_GIDMAP_IDX],
- rmt_gid, lcl_gid);
- spin_unlock(&tbl->mit_lock);
- RETURN(0);
-}
-
-static
-__u32 idmap_lookup_id(struct list_head *hash, int reverse, __u32 id)
-{
- struct list_head *head = &hash[MDS_IDMAP_HASHFUNC(id)];
- struct mds_idmap_entry *e;
-
- if (!reverse) {
- list_for_each_entry(e, head, rmt_hash) {
- if (e->rmt_id == id)
- return e->lcl_id;
- }
- return MDS_IDMAP_NOTFOUND;
- } else {
- list_for_each_entry(e, head, lcl_hash) {
- if (e->lcl_id == id)
- return e->rmt_id;
- }
- return MDS_IDMAP_NOTFOUND;
- }
-}
-
-int mds_idmap_lookup_uid(struct mds_idmap_table *tbl, int reverse, uid_t uid)
-{
- struct list_head *hash;
-
- if (!tbl)
- return MDS_IDMAP_NOTFOUND;
-
- if (!reverse)
- hash = tbl->mit_idmaps[MDS_RMT_UIDMAP_IDX];
- else
- hash = tbl->mit_idmaps[MDS_LCL_UIDMAP_IDX];
-
- spin_lock(&tbl->mit_lock);
- uid = idmap_lookup_id(hash, reverse, uid);
- spin_unlock(&tbl->mit_lock);
-
- return uid;
-}
-
-int mds_idmap_lookup_gid(struct mds_idmap_table *tbl, int reverse, gid_t gid)
-{
- struct list_head *hash;
-
- if (!tbl)
- return MDS_IDMAP_NOTFOUND;
-
- if (!reverse)
- hash = tbl->mit_idmaps[MDS_RMT_GIDMAP_IDX];
- else
- hash = tbl->mit_idmaps[MDS_LCL_GIDMAP_IDX];
-
- spin_lock(&tbl->mit_lock);
- gid = idmap_lookup_id(hash, reverse, gid);
- spin_unlock(&tbl->mit_lock);
-
- return gid;
-}
-
-struct mds_idmap_table *mds_idmap_alloc()
-{
- struct mds_idmap_table *tbl;
- int i, j;
-
- OBD_ALLOC(tbl, sizeof(*tbl));
- if (!tbl)
- return NULL;
-
- spin_lock_init(&tbl->mit_lock);
- for (i = 0; i < MDS_IDMAP_N_HASHES; i++)
- for (j = 0; j < MDS_IDMAP_HASHSIZE; j++)
- INIT_LIST_HEAD(&tbl->mit_idmaps[i][j]);
-
- return tbl;
-}
-
-static void idmap_clear_rmt_hash(struct list_head *list)
-{
- struct mds_idmap_entry *e;
- int i;
-
- for (i = 0; i < MDS_IDMAP_HASHSIZE; i++) {
- while (!list_empty(&list[i])) {
- e = list_entry(list[i].next, struct mds_idmap_entry,
- rmt_hash);
- idmap_free_entry(e);
- }
- }
-}
-
-void mds_idmap_free(struct mds_idmap_table *tbl)
-{
- int i;
-
- spin_lock(&tbl->mit_lock);
- idmap_clear_rmt_hash(tbl->mit_idmaps[MDS_RMT_UIDMAP_IDX]);
- idmap_clear_rmt_hash(tbl->mit_idmaps[MDS_RMT_GIDMAP_IDX]);
-
- /* paranoid checking */
- for (i = 0; i < MDS_IDMAP_HASHSIZE; i++) {
- LASSERT(list_empty(&tbl->mit_idmaps[MDS_LCL_UIDMAP_IDX][i]));
- LASSERT(list_empty(&tbl->mit_idmaps[MDS_LCL_GIDMAP_IDX][i]));
- }
- spin_unlock(&tbl->mit_lock);
-
- OBD_FREE(tbl, sizeof(*tbl));
+ RETURN(rc);
}
-/*********************************
- * helpers doing mapping for MDS *
- *********************************/
-
-/*
- * we allow remote setuid/setgid to an "authencated" one,
- * this policy probably change later.
- */
-static
-int mds_req_secdesc_do_map(struct mds_export_data *med,
- struct mds_req_sec_desc *rsd)
+int mds_init_ucred(struct lvfs_ucred *ucred, struct ptlrpc_request *req,
+ int offset)
{
- struct mds_idmap_table *idmap = med->med_idmap;
- uid_t uid, fsuid;
- gid_t gid, fsgid;
-
- uid = mds_idmap_lookup_uid(idmap, 0, rsd->rsd_uid);
- if (uid == MDS_IDMAP_NOTFOUND) {
- CERROR("can't find map for uid %u\n", rsd->rsd_uid);
- return -EPERM;
- }
-
- if (rsd->rsd_uid == rsd->rsd_fsuid)
- fsuid = uid;
- else {
- fsuid = mds_idmap_lookup_uid(idmap, 0, rsd->rsd_fsuid);
- if (fsuid == MDS_IDMAP_NOTFOUND) {
- CERROR("can't find map for fsuid %u\n", rsd->rsd_fsuid);
- return -EPERM;
- }
- }
+ struct mds_body *body = lustre_msg_buf(req->rq_reqmsg, offset,
+ sizeof(*body));
+ struct mds_obd *mds = mds_req2mds(req);
+ int rc;
- gid = mds_idmap_lookup_gid(idmap, 0, rsd->rsd_gid);
- if (gid == MDS_IDMAP_NOTFOUND) {
- CERROR("can't find map for gid %u\n", rsd->rsd_gid);
- return -EPERM;
- }
+ LASSERT(body != NULL); /* previously verified & swabbed by caller */
- if (rsd->rsd_gid == rsd->rsd_fsgid)
- fsgid = gid;
- else {
- fsgid = mds_idmap_lookup_gid(idmap, 0, rsd->rsd_fsgid);
- if (fsgid == MDS_IDMAP_NOTFOUND) {
- CERROR("can't find map for fsgid %u\n", rsd->rsd_fsgid);
- return -EPERM;
- }
+#ifdef CRAY_XT3
+ if (req->rq_uid != LNET_UID_ANY) {
+ /* Non-root local cluster client */
+ LASSERT (req->rq_uid != 0);
+ ucred->luc_fsuid = req->rq_uid;
+ } else
+#endif
+ {
+ ucred->luc_fsuid = body->fsuid;
+ ucred->luc_fsgid = body->fsgid;
+ ucred->luc_cap = body->capability;
}
- rsd->rsd_uid = uid;
- rsd->rsd_gid = gid;
- rsd->rsd_fsuid = fsuid;
- rsd->rsd_fsgid = fsgid;
-
- return 0;
-}
-
-void mds_body_do_reverse_map(struct mds_export_data *med,
- struct mds_body *body)
-{
- uid_t uid;
- gid_t gid;
-
- if (!med->med_remote)
- return;
-
- ENTRY;
- if (body->valid & OBD_MD_FLUID) {
- uid = mds_idmap_lookup_uid(med->med_idmap, 1, body->uid);
- if (uid == MDS_IDMAP_NOTFOUND) {
- uid = med->med_nllu;
- if (body->valid & OBD_MD_FLMODE) {
- body->mode = (body->mode & ~S_IRWXU) |
- ((body->mode & S_IRWXO) << 6);
- }
- }
- body->uid = uid;
+ ucred->luc_uce = upcall_cache_get_entry(mds->mds_group_hash,
+ ucred->luc_fsuid,
+ ucred->luc_fsgid, 1,
+ &body->suppgid);
+ if (IS_ERR(ucred->luc_uce)) {
+ rc = PTR_ERR(ucred->luc_uce);
+ ucred->luc_uce = NULL;
+ return rc;
}
- if (body->valid & OBD_MD_FLGID) {
- gid = mds_idmap_lookup_gid(med->med_idmap, 1, body->gid);
- if (gid == MDS_IDMAP_NOTFOUND) {
- gid = med->med_nllg;
- if (body->valid & OBD_MD_FLMODE) {
- body->mode = (body->mode & ~S_IRWXG) |
- ((body->mode & S_IRWXO) << 3);
- }
- }
- body->gid = gid;
- }
-
- EXIT;
-}
-/*
- * return error if can't find mapping, it's a error so should not
- * fall into nllu/nllg.
- */
-int mds_remote_perm_do_reverse_map(struct mds_export_data *med,
- struct mds_remote_perm *perm)
-{
- uid_t uid;
- gid_t gid;
-
- LASSERT(med->med_remote);
-
- uid = mds_idmap_lookup_uid(med->med_idmap, 1, perm->mrp_auth_uid);
- if (uid == MDS_IDMAP_NOTFOUND) {
- CERROR("no map for uid %u\n", perm->mrp_auth_uid);
- return -EPERM;
- }
- gid = mds_idmap_lookup_gid(med->med_idmap, 1, perm->mrp_auth_gid);
- if (gid == MDS_IDMAP_NOTFOUND) {
- CERROR("no map for uid %u\n", perm->mrp_auth_uid);
- return -EPERM;
- }
+#ifdef CRAY_XT3
+ if (ucred->luc_uce)
+ ucred->luc_fsgid = ucred->luc_uce->ue_primary;
+#endif
- perm->mrp_auth_uid = uid;
- perm->mrp_auth_gid = gid;
return 0;
}
-/**********************
- * MDS ucred handling *
- **********************/
-
-static inline void drop_ucred_ginfo(struct lvfs_ucred *ucred)
-{
- if (ucred->luc_ginfo) {
- put_group_info(ucred->luc_ginfo);
- ucred->luc_ginfo = NULL;
- }
-}
-
-static inline void drop_ucred_lsd(struct lvfs_ucred *ucred)
-{
- if (ucred->luc_lsd) {
- mds_put_lsd(ucred->luc_lsd);
- ucred->luc_lsd = NULL;
- }
-}
-
-/*
- * the heart of the uid/gid handling and security checking.
- *
- * root could set any group_info if we allowed setgroups, while
- * normal user only could 'reduce' their group members -- which
- * is somewhat expensive.
- *
- * authenticated as mds user (using mds service credential) could
- * bypass all checkings.
- */
-int mds_init_ucred(struct lvfs_ucred *ucred,
- struct ptlrpc_request *req,
- struct mds_req_sec_desc *rsd)
-{
- struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
- struct mds_export_data *med = &req->rq_export->u.eu_mds_data;
- struct lustre_sec_desc *lsd;
- ptl_nid_t peernid = req->rq_peer.peer_id.nid;
- struct group_info *gnew;
- unsigned int setuid, setgid, strong_sec, root_squashed;
- __u32 lsd_perms;
- ENTRY;
-
- LASSERT(ucred);
- LASSERT(rsd);
- LASSERT(rsd->rsd_ngroups <= LUSTRE_MAX_GROUPS);
-
- if (SEC_FLAVOR_MAJOR(req->rq_req_secflvr) == PTLRPCS_FLVR_MAJOR_GSS &&
- (SEC_FLAVOR_SVC(req->rq_req_secflvr) == PTLRPCS_SVC_AUTH ||
- SEC_FLAVOR_SVC(req->rq_req_secflvr) == PTLRPCS_SVC_PRIV))
- strong_sec = 1;
- else
- strong_sec = 0;
-
- LASSERT(!(req->rq_remote_realm && !strong_sec));
-
- if (strong_sec && req->rq_auth_uid == -1) {
- CWARN("user not authenticated, deny access\n");
- RETURN(-EPERM);
- }
-
- /* sanity check: if we use strong authentication, we expect the
- * uid which client claimed is true.
- * not apply to special mds user .
- */
- if (!req->rq_auth_usr_mds && strong_sec) {
- if (!med->med_remote) {
- if (req->rq_auth_uid != rsd->rsd_uid) {
- CERROR("local client "LPU64": auth uid %u "
- "while client claim %u:%u/%u:%u\n",
- peernid, req->rq_auth_uid,
- rsd->rsd_uid, rsd->rsd_gid,
- rsd->rsd_fsuid, rsd->rsd_fsgid);
- RETURN(-EPERM);
- }
- } else {
- if (req->rq_mapped_uid == MDS_IDMAP_NOTFOUND) {
- CWARN("no mapping found, deny\n");
- RETURN(-EPERM);
- }
-
- if (mds_req_secdesc_do_map(med, rsd))
- RETURN(-EPERM);
-
- if (req->rq_mapped_uid != rsd->rsd_uid) {
- CERROR("remote client "LPU64": auth uid %u "
- "while client claim %u:%u/%u:%u\n",
- peernid, req->rq_auth_uid,
- rsd->rsd_uid, rsd->rsd_gid,
- rsd->rsd_fsuid, rsd->rsd_fsgid);
- RETURN(-EPERM);
- }
- }
- }
-
- /* now LSD come into play */
- ucred->luc_ginfo = NULL;
- ucred->luc_lsd = lsd = mds_get_lsd(rsd->rsd_uid);
-
- if (!lsd) {
- CERROR("Deny access without LSD: uid %d\n", rsd->rsd_uid);
- RETURN(-EPERM);
- }
-
- lsd_perms = mds_lsd_get_perms(lsd, med->med_remote, 0, peernid);
-
- /* check setuid/setgid permissions.
- * again not apply to special mds user.
- */
- if (!req->rq_auth_usr_mds) {
- /* find out the setuid/setgid attempt */
- setuid = (rsd->rsd_uid != rsd->rsd_fsuid);
- setgid = (rsd->rsd_gid != rsd->rsd_fsgid ||
- rsd->rsd_gid != lsd->lsd_gid);
-
- /* check permission of setuid */
- if (setuid && !(lsd_perms & LSD_PERM_SETUID)) {
- CWARN("mds blocked setuid attempt (%u -> %u) "
- "from "LPU64"\n", rsd->rsd_uid, rsd->rsd_fsuid,
- peernid);
- RETURN(-EPERM);
- }
-
- /* check permission of setgid */
- if (setgid && !(lsd_perms & LSD_PERM_SETGID)) {
- CWARN("mds blocked setgid attempt (%u:%u/%u:%u -> %u) "
- "from "LPU64"\n", rsd->rsd_uid, rsd->rsd_gid,
- rsd->rsd_fsuid, rsd->rsd_fsgid, lsd->lsd_gid,
- peernid);
- RETURN(-EPERM);
- }
- }
-
- root_squashed = mds_squash_root(mds, rsd, &peernid);
-
- /* remove privilege for non-root user */
- if (rsd->rsd_fsuid)
- rsd->rsd_cap &= ~CAP_FS_MASK;
-
- /* by now every fields other than groups in rsd have been granted */
- ucred->luc_nid = peernid;
- ucred->luc_uid = rsd->rsd_uid;
- ucred->luc_gid = rsd->rsd_gid;
- ucred->luc_fsuid = rsd->rsd_fsuid;
- ucred->luc_fsgid = rsd->rsd_fsgid;
- ucred->luc_cap = rsd->rsd_cap;
-
- /* don't use any supplementary group if we squashed root.
- * XXX The exact behavior of root_squash is not defined, we just
- * keep the reminder here */
- if (root_squashed)
- RETURN(0);
-
- /* install groups from LSD */
- if (lsd->lsd_ginfo) {
- ucred->luc_ginfo = lsd->lsd_ginfo;
- get_group_info(ucred->luc_ginfo);
- }
-
- /* everything is done if we don't allow setgroups, or it is
- * from remote client (which implies forced to be no-setgroups).
- *
- * Note: remote user's supplementary groups sent along the request
- * (if any) are all ignored, but we make the mapped local user's
- * supplementary groups take effect.
- */
- if (med->med_remote || !(lsd_perms & LSD_PERM_SETGRP))
- RETURN(0);
-
- /* root could set any groups as he want (if allowed), normal
- * users only could reduce his group array.
- */
- if (ucred->luc_uid == 0) {
- drop_ucred_ginfo(ucred);
-
- if (rsd->rsd_ngroups == 0)
- RETURN(0);
-
- gnew = groups_alloc(rsd->rsd_ngroups);
- if (!gnew) {
- CERROR("out of memory\n");
- drop_ucred_lsd(ucred);
- RETURN(-ENOMEM);
- }
- groups_from_buffer(gnew, rsd->rsd_groups);
- groups_sort(gnew); /* don't rely on client doing this */
-
- ucred->luc_ginfo = gnew;
- } else {
- __u32 set = 0, cur = 0;
- struct group_info *ginfo = ucred->luc_ginfo;
-
- if (!ginfo)
- RETURN(0);
-
- /* Note: freeing a group_info count on 'nblocks' instead of
- * 'ngroups', thus we can safely alloc enough buffer and reduce
- * and ngroups number later.
- */
- gnew = groups_alloc(rsd->rsd_ngroups);
- if (!gnew) {
- CERROR("out of memory\n");
- drop_ucred_ginfo(ucred);
- drop_ucred_lsd(ucred);
- RETURN(-ENOMEM);
- }
-
- while (cur < rsd->rsd_ngroups) {
- if (groups_search(ginfo, rsd->rsd_groups[cur])) {
- GROUP_AT(gnew, set) = rsd->rsd_groups[cur];
- set++;
- }
- cur++;
- }
- gnew->ngroups = set;
-
- put_group_info(ucred->luc_ginfo);
- ucred->luc_ginfo = gnew;
- }
- RETURN(0);
-}
-
-void mds_exit_ucred(struct lvfs_ucred *ucred)
+void mds_exit_ucred(struct lvfs_ucred *ucred, struct mds_obd *mds)
{
- ENTRY;
- drop_ucred_ginfo(ucred);
- drop_ucred_lsd(ucred);
- EXIT;
+ upcall_cache_put_entry(mds->mds_group_hash, ucred->luc_uce);
}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff