#include <linux/obd_support.h>
#include <linux/lustre_lib.h>
-#include <linux/lustre_mds.h>
+#include "mds_internal.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)
+{
+ 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_dentry2fid(struct ll_fid *fid, struct dentry *dentry)
+{
+ fid->id = dentry->d_inum;
+ fid->generation = dentry->d_generation;
+ fid->mds = dentry->d_mdsnum;
+}
+
+void mds_pack_dentry2body(struct mds_body *b, struct dentry *dentry)
+{
+ b->valid |= OBD_MD_FLID | OBD_MD_FLGENER;
+ b->ino = dentry->d_inum;
+ b->generation = dentry->d_generation;
+ b->mds = dentry->d_mdsnum;
+}
void mds_pack_inode2fid(struct obd_device *obd, struct ll_fid *fid,
struct inode *inode)
{
+ if (!obd || !fid || !inode) {
+ printk("obd %p, fid %p, inode %p\n", obd, fid, inode);
+ LBUG();
+ }
fid->id = inode->i_ino;
fid->generation = inode->i_generation;
fid->f_type = (S_IFMT & inode->i_mode);
b->nlink = inode->i_nlink;
}
b->generation = inode->i_generation;
- b->suppgid = -1;
b->mds = obd->u.mds.mds_num;
}
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_fsuid = rec->sa_fsuid;
- r->ur_fsgid = rec->sa_fsgid;
- r->ur_cap = rec->sa_cap;
- r->ur_suppgid1 = rec->sa_suppgid;
- r->ur_suppgid2 = -1;
r->ur_fid1 = &rec->sa_fid;
attr->ia_valid = rec->sa_valid;
attr->ia_mode = rec->sa_mode;
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_fsuid = rec->cr_fsuid;
- r->ur_fsgid = rec->cr_fsgid;
- r->ur_cap = rec->cr_cap;
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_suppgid1 = rec->cr_suppgid;
- r->ur_suppgid2 = -1;
LASSERT_REQSWAB (req, offset + 1);
r->ur_name = lustre_msg_string (req->rq_reqmsg, offset + 1, 0);
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_fsuid = rec->lk_fsuid;
- r->ur_fsgid = rec->lk_fsgid;
- r->ur_cap = rec->lk_cap;
- r->ur_suppgid1 = rec->lk_suppgid1;
- r->ur_suppgid2 = rec->lk_suppgid2;
r->ur_fid1 = &rec->lk_fid1;
r->ur_fid2 = &rec->lk_fid2;
r->ur_time = rec->lk_time;
if (rec == NULL)
RETURN(-EFAULT);
- r->ur_fsuid = rec->ul_fsuid;
- r->ur_fsgid = rec->ul_fsgid;
- r->ur_cap = rec->ul_cap;
r->ur_mode = rec->ul_mode;
- r->ur_suppgid1 = rec->ul_suppgid;
- r->ur_suppgid2 = -1;
r->ur_fid1 = &rec->ul_fid1;
r->ur_fid2 = &rec->ul_fid2;
r->ur_time = rec->ul_time;
ENTRY;
rec = lustre_swab_reqbuf (req, offset, sizeof (*rec),
- lustre_swab_mds_rec_unlink);
+ lustre_swab_mds_rec_rename);
if (rec == NULL)
RETURN(-EFAULT);
- r->ur_fsuid = rec->rn_fsuid;
- r->ur_fsgid = rec->rn_fsgid;
- r->ur_cap = rec->rn_cap;
- r->ur_suppgid1 = rec->rn_suppgid1;
- r->ur_suppgid2 = rec->rn_suppgid2;
r->ur_fid1 = &rec->rn_fid1;
r->ur_fid2 = &rec->rn_fid2;
r->ur_time = rec->rn_time;
if (rec == NULL)
RETURN (-EFAULT);
- r->ur_fsuid = rec->cr_fsuid;
- r->ur_fsgid = rec->cr_fsgid;
- r->ur_cap = rec->cr_cap;
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_suppgid1 = rec->cr_suppgid;
- r->ur_suppgid2 = -1;
LASSERT_REQSWAB (req, offset + 1);
r->ur_name = lustre_msg_string (req->rq_reqmsg, offset + 1, 0);
rc = mds_unpackers[opcode](req, offset, rec);
RETURN(rc);
}
+
+static inline void drop_ucred_ginfo(struct lvfs_ucred *ucred)
+{
+ if (ucred->luc_ginfo) {
+ put_group_info(ucred->luc_ginfo);
+ ucred->luc_ginfo = NULL;
+ }
+}
+
+/*
+ * root could set any group_info if we allowed setgroups, while
+ * normal user only could 'reduce' their group members -- which
+ * is somewhat expensive.
+ */
+int mds_init_ucred(struct lvfs_ucred *ucred, struct mds_req_sec_desc *rsd)
+{
+ struct group_info *gnew;
+
+ ENTRY;
+ LASSERT(ucred);
+ LASSERT(rsd);
+
+ ucred->luc_fsuid = rsd->rsd_fsuid;
+ ucred->luc_fsgid = rsd->rsd_fsgid;
+ ucred->luc_cap = rsd->rsd_cap;
+ ucred->luc_uid = rsd->rsd_uid;
+ ucred->luc_ghash = mds_get_group_entry(NULL, rsd->rsd_uid);
+ ucred->luc_ginfo = NULL;
+
+ if (ucred->luc_ghash && ucred->luc_ghash->ge_group_info) {
+ ucred->luc_ginfo = ucred->luc_ghash->ge_group_info;
+ get_group_info(ucred->luc_ginfo);
+ }
+
+ /* everything is done if we don't allow setgroups */
+ if (!mds_allow_setgroups())
+ RETURN(0);
+
+ if (rsd->rsd_ngroups > LUSTRE_MAX_GROUPS) {
+ CERROR("client provide too many groups: %d\n",
+ rsd->rsd_ngroups);
+ drop_ucred_ginfo(ucred);
+ mds_put_group_entry(NULL, ucred->luc_ghash);
+ RETURN(-EFAULT);
+ }
+
+ if (ucred->luc_uid == 0) {
+ if (rsd->rsd_ngroups == 0) {
+ drop_ucred_ginfo(ucred);
+ RETURN(0);
+ }
+
+ gnew = groups_alloc(rsd->rsd_ngroups);
+ if (!gnew) {
+ CERROR("out of memory\n");
+ drop_ucred_ginfo(ucred);
+ mds_put_group_entry(NULL, ucred->luc_ghash);
+ RETURN(-ENOMEM);
+ }
+ groups_from_buffer(gnew, rsd->rsd_groups);
+ /* can't rely on client to sort them */
+ groups_sort(gnew);
+
+ drop_ucred_ginfo(ucred);
+ ucred->luc_ginfo = gnew;
+ } else {
+ struct group_info *ginfo;
+ __u32 set = 0, cur = 0;
+
+ /* if no group info in hash, we don't
+ * bother createing new
+ */
+ if (!ucred->luc_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);
+ mds_put_group_entry(NULL, ucred->luc_ghash);
+ RETURN(-ENOMEM);
+ }
+
+ ginfo = ucred->luc_ginfo;
+ while (cur < rsd->rsd_ngroups) {
+ if (groups_search(ginfo, rsd->rsd_groups[cur]))
+ GROUP_AT(gnew, set++) = rsd->rsd_groups[cur];
+ cur++;
+ }
+ gnew->ngroups = set;
+
+ put_group_info(ucred->luc_ginfo);
+ ucred->luc_ginfo = gnew;
+ }
+ RETURN(0);
+}
+
+void mds_exit_ucred(struct lvfs_ucred *ucred)
+{
+ ENTRY;
+
+ if (ucred->luc_ginfo)
+ put_group_info(ucred->luc_ginfo);
+ if (ucred->luc_ghash)
+ mds_put_group_entry(NULL, ucred->luc_ghash);
+
+ EXIT;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff