* Use is subject to license terms.
*/
/*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <linux/buffer_head.h> // for wait_on_buffer
+#include <linux/pagevec.h>
#define DEBUG_SUBSYSTEM S_LLITE
*
* page format
*
- *
- *
- *
+ * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
+ * a header lu_dirpage which describes the start/end hash, and whether this
+ * page is empty (contains no dir entry) or hash collide with next page.
+ * After client receives reply, several pages will be integrated into dir page
+ * in CFS_PAGE_SIZE (if CFS_PAGE_SIZE greater than LU_PAGE_SIZE), and the
+ * lu_dirpage for this integrated page will be adjusted.
*
*/
/* returns the page unlocked, but with a reference */
-static int ll_dir_readpage(struct file *file, struct page *page)
+static int ll_dir_readpage(struct file *file, struct page *page0)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode = page0->mapping->host;
+ int hash64 = ll_i2sbi(inode)->ll_flags & LL_SBI_64BIT_HASH;
+ struct obd_export *exp = ll_i2sbi(inode)->ll_md_exp;
struct ptlrpc_request *request;
struct mdt_body *body;
struct obd_capa *oc;
__u64 hash;
+ struct page **page_pool;
+ struct page *page;
+#ifndef HAVE_ADD_TO_PAGE_CACHE_LRU
+ struct pagevec lru_pvec;
+#endif
+ struct lu_dirpage *dp;
+ int max_pages = ll_i2sbi(inode)->ll_md_brw_size >> CFS_PAGE_SHIFT;
+ int nrdpgs = 0; /* number of pages read actually */
+ int npages;
+ int i;
int rc;
ENTRY;
hash = fd->fd_dir.lfd_next;
} else {
- struct ll_inode_info *lli = ll_i2info(inode);
+ hash = ll_i2info(inode)->lli_sa_pos;
+ }
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p) hash "LPU64"\n",
+ inode->i_ino, inode->i_generation, inode, hash);
- cfs_spin_lock(&lli->lli_sa_lock);
- if (lli->lli_sai)
- LASSERT(lli->lli_sai->sai_pid == cfs_curproc_pid());
- else
- LASSERT(lli->lli_opendir_pid == cfs_curproc_pid());
- hash = lli->lli_sa_pos;
- cfs_spin_unlock(&lli->lli_sa_lock);
+ LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
+
+ OBD_ALLOC(page_pool, sizeof(page) * max_pages);
+ if (page_pool != NULL) {
+ page_pool[0] = page0;
+ } else {
+ page_pool = &page0;
+ max_pages = 1;
+ }
+ for (npages = 1; npages < max_pages; npages++) {
+ page = page_cache_alloc_cold(inode->i_mapping);
+ if (!page)
+ break;
+ page_pool[npages] = page;
}
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p) off %lu\n",
- inode->i_ino, inode->i_generation, inode, (unsigned long)hash);
oc = ll_mdscapa_get(inode);
- rc = md_readpage(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode),
- oc, hash, page, &request);
+ rc = md_readpage(exp, ll_inode2fid(inode), oc, hash, page_pool, npages,
+ &request);
capa_put(oc);
- if (!rc) {
+ if (rc == 0) {
body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
/* Checked by mdc_readpage() */
LASSERT(body != NULL);
if (body->valid & OBD_MD_FLSIZE)
cl_isize_write(inode, body->size);
- SetPageUptodate(page);
+
+ nrdpgs = (request->rq_bulk->bd_nob_transferred+CFS_PAGE_SIZE-1)
+ >> CFS_PAGE_SHIFT;
+ SetPageUptodate(page0);
}
+ unlock_page(page0);
ptlrpc_req_finished(request);
- unlock_page(page);
+ CDEBUG(D_VFSTRACE, "read %d/%d pages\n", nrdpgs, npages);
+
+ ll_pagevec_init(&lru_pvec, 0);
+ for (i = 1; i < npages; i++) {
+ unsigned long offset;
+ int ret;
+
+ page = page_pool[i];
+
+ if (rc < 0 || i >= nrdpgs) {
+ page_cache_release(page);
+ continue;
+ }
+
+ SetPageUptodate(page);
+
+ dp = cfs_kmap(page);
+ hash = le64_to_cpu(dp->ldp_hash_start);
+ cfs_kunmap(page);
+
+ offset = hash_x_index(hash, hash64);
+
+ prefetchw(&page->flags);
+ ret = ll_add_to_page_cache_lru(page, inode->i_mapping, offset,
+ GFP_KERNEL);
+ if (ret == 0) {
+ unlock_page(page);
+ page_cache_get(page);
+ if (ll_pagevec_add(&lru_pvec, page) == 0)
+ ll_pagevec_lru_add_file(&lru_pvec);
+ } else {
+ CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
+ " %d\n", offset, ret);
+ }
+ page_cache_release(page);
+ }
+ ll_pagevec_lru_add_file(&lru_pvec);
+
+ if (page_pool != &page0)
+ OBD_FREE(page_pool, sizeof(struct page *) * max_pages);
EXIT;
return rc;
}
SetPageChecked(page);
}
-static void ll_release_page(struct page *page, __u64 hash,
- __u64 start, __u64 end)
+void ll_release_page(struct page *page, int remove)
{
kunmap(page);
- lock_page(page);
- if (likely(page->mapping != NULL)) {
- ll_truncate_complete_page(page);
- unlock_page(page);
- } else {
+ if (remove) {
+ lock_page(page);
+ if (likely(page->mapping != NULL))
+ truncate_complete_page(page->mapping, page);
unlock_page(page);
- CWARN("NULL mapping page %p, truncated by others: "
- "hash("LPX64") | start("LPX64") | end("LPX64")\n",
- page, hash, start, end);
}
page_cache_release(page);
}
static struct page *ll_dir_page_locate(struct inode *dir, __u64 *hash,
__u64 *start, __u64 *end)
{
+ int hash64 = ll_i2sbi(dir)->ll_flags & LL_SBI_64BIT_HASH;
struct address_space *mapping = dir->i_mapping;
/*
* Complement of hash is used as an index so that
* radix_tree_gang_lookup() can be used to find a page with starting
* hash _smaller_ than one we are looking for.
*/
- unsigned long offset = hash_x_index(*hash);
+ unsigned long offset = hash_x_index(*hash, hash64);
struct page *page;
int found;
*/
wait_on_page(page);
if (PageUptodate(page)) {
- dp = kmap(page);
-#if BITS_PER_LONG == 32
- *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
- *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
- *hash = *hash >> 32;
-#else
- *start = le64_to_cpu(dp->ldp_hash_start);
- *end = le64_to_cpu(dp->ldp_hash_end);
-#endif
+ dp = cfs_kmap(page);
+ if (BITS_PER_LONG == 32 && hash64) {
+ *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
+ *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
+ *hash = *hash >> 32;
+ } else {
+ *start = le64_to_cpu(dp->ldp_hash_start);
+ *end = le64_to_cpu(dp->ldp_hash_end);
+ }
LASSERTF(*start <= *hash, "start = "LPX64",end = "
LPX64",hash = "LPX64"\n", *start, *end, *hash);
- if (*hash > *end || (*end != *start && *hash == *end)) {
- ll_release_page(page, *hash, *start, *end);
+ CDEBUG(D_VFSTRACE, "page %lu [%llu %llu], hash "LPU64"\n",
+ offset, *start, *end, *hash);
+ if (*hash > *end) {
+ ll_release_page(page, 0);
+ page = NULL;
+ } else if (*end != *start && *hash == *end) {
+ /*
+ * upon hash collision, remove this page,
+ * otherwise put page reference, and
+ * ll_get_dir_page() will issue RPC to fetch
+ * the page we want.
+ */
+ ll_release_page(page,
+ le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
page = NULL;
}
} else {
}
struct page *ll_get_dir_page(struct file *filp, struct inode *dir, __u64 hash,
- int exact, struct ll_dir_chain *chain)
+ struct ll_dir_chain *chain)
{
ldlm_policy_data_t policy = {.l_inodebits = {MDS_INODELOCK_UPDATE} };
struct address_space *mapping = dir->i_mapping;
__u64 end = 0;
__u64 lhash = hash;
struct ll_inode_info *lli = ll_i2info(dir);
+ int hash64 = ll_i2sbi(dir)->ll_flags & LL_SBI_64BIT_HASH;
mode = LCK_PR;
rc = md_lock_match(ll_i2sbi(dir)->ll_md_exp, LDLM_FL_BLOCK_GRANTED,
CERROR("dir page locate: "DFID" at "LPU64": rc %ld\n",
PFID(ll_inode2fid(dir)), lhash, PTR_ERR(page));
GOTO(out_unlock, page);
- }
-
- if (page != NULL) {
+ } else if (page != NULL) {
/*
* XXX nikita: not entirely correct handling of a corner case:
* suppose hash chain of entries with hash value HASH crosses
* it as an "overflow" page. 1. invalidate all pages at
* once. 2. use HASH|1 as an index for P1.
*/
- if (exact && lhash != start) {
- /*
- * readdir asked for a page starting _exactly_ from
- * given hash, but cache contains stale page, with
- * entries with smaller hash values. Stale page should
- * be invalidated, and new one fetched.
- */
- CDEBUG(D_OTHER, "Stale readpage page %p: "
- "start = "LPX64",end = "LPX64"hash ="LPX64"\n",
- page, start, end, lhash);
- ll_release_page(page, lhash, start, end);
- } else {
- GOTO(hash_collision, page);
- }
+ GOTO(hash_collision, page);
}
- page = read_cache_page(mapping, hash_x_index(hash),
+ page = read_cache_page(mapping, hash_x_index(hash, hash64),
(filler_t*)mapping->a_ops->readpage, filp);
if (IS_ERR(page)) {
CERROR("read cache page: "DFID" at "LPU64": rc %ld\n",
}
hash_collision:
dp = page_address(page);
-#if BITS_PER_LONG == 32
- start = le64_to_cpu(dp->ldp_hash_start) >> 32;
- end = le64_to_cpu(dp->ldp_hash_end) >> 32;
- lhash = hash >> 32;
-#else
- start = le64_to_cpu(dp->ldp_hash_start);
- end = le64_to_cpu(dp->ldp_hash_end);
- lhash = hash;
-#endif
+ if (BITS_PER_LONG == 32 && hash64) {
+ start = le64_to_cpu(dp->ldp_hash_start) >> 32;
+ end = le64_to_cpu(dp->ldp_hash_end) >> 32;
+ lhash = hash >> 32;
+ } else {
+ start = le64_to_cpu(dp->ldp_hash_start);
+ end = le64_to_cpu(dp->ldp_hash_end);
+ lhash = hash;
+ }
if (end == start) {
LASSERT(start == lhash);
CWARN("Page-wide hash collision: "LPU64"\n", end);
-#if BITS_PER_LONG == 32
- CWARN("Real page-wide hash collision at ["LPU64" "LPU64"] with "
- "hash "LPU64"\n", le64_to_cpu(dp->ldp_hash_start),
- le64_to_cpu(dp->ldp_hash_end), hash);
-#endif
+ if (BITS_PER_LONG == 32 && hash64)
+ CWARN("Real page-wide hash collision at ["LPU64" "LPU64
+ "] with hash "LPU64"\n",
+ le64_to_cpu(dp->ldp_hash_start),
+ le64_to_cpu(dp->ldp_hash_end), hash);
/*
* Fetch whole overflow chain...
*
return page;
fail:
- ll_put_page(page);
+ ll_release_page(page, 1);
page = ERR_PTR(-EIO);
goto out_unlock;
}
int ll_readdir(struct file *filp, void *cookie, filldir_t filldir)
{
- struct inode *inode = filp->f_dentry->d_inode;
- struct ll_inode_info *info = ll_i2info(inode);
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct ll_file_data *fd = LUSTRE_FPRIVATE(filp);
- __u64 pos = fd->fd_dir.lfd_pos;
+ struct inode *inode = filp->f_dentry->d_inode;
+ struct ll_inode_info *info = ll_i2info(inode);
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ll_file_data *fd = LUSTRE_FPRIVATE(filp);
+ __u64 pos = fd->fd_dir.lfd_pos;
+ int api32 = ll_need_32bit_api(sbi);
+ int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
struct page *page;
struct ll_dir_chain chain;
- int rc, need_32bit;
- int done;
- int shift;
- __u16 type;
+ int done;
+ int shift;
+ int rc;
ENTRY;
- need_32bit = ll_need_32bit_api(sbi);
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p) pos %lu/%llu 32bit_api %d\n",
inode->i_ino, inode->i_generation, inode,
- (unsigned long)pos, i_size_read(inode), need_32bit);
+ (unsigned long)pos, i_size_read(inode), api32);
- if (pos == DIR_END_OFF)
+ if (pos == MDS_DIR_END_OFF)
/*
* end-of-file.
*/
ll_dir_chain_init(&chain);
fd->fd_dir.lfd_next = pos;
- page = ll_get_dir_page(filp, inode, pos, 0, &chain);
+ page = ll_get_dir_page(filp, inode, pos, &chain);
while (rc == 0 && !done) {
struct lu_dirpage *dp;
* If page is empty (end of directory is reached),
* use this value.
*/
- __u64 hash = DIR_END_OFF;
+ __u64 hash = MDS_DIR_END_OFF;
__u64 next;
dp = page_address(page);
for (ent = lu_dirent_start(dp); ent != NULL && !done;
ent = lu_dirent_next(ent)) {
- char *name;
+ __u16 type;
int namelen;
struct lu_fid fid;
- __u64 ino;
__u64 lhash;
+ __u64 ino;
/*
* XXX: implement correct swabbing here.
*/
continue;
- name = ent->lde_name;
- fid_le_to_cpu(&fid, &ent->lde_fid);
- if (need_32bit) {
+ if (api32 && hash64)
lhash = hash >> 32;
- ino = cl_fid_build_ino32(&fid);
- } else {
+ else
lhash = hash;
- ino = cl_fid_build_ino(&fid);
- }
+ fid_le_to_cpu(&fid, &ent->lde_fid);
+ ino = cl_fid_build_ino(&fid, api32);
type = ll_dirent_type_get(ent);
- done = filldir(cookie, name, namelen,
+ /* For 'll_nfs_get_name_filldir()', it will try
+ * to access the 'ent' through its 'lde_name',
+ * so the parameter 'name' for 'filldir()' must
+ * be part of the 'ent'. */
+ done = filldir(cookie, ent->lde_name, namelen,
lhash, ino, type);
}
next = le64_to_cpu(dp->ldp_hash_end);
- ll_put_page(page);
if (!done) {
pos = next;
- if (pos == DIR_END_OFF) {
+ if (pos == MDS_DIR_END_OFF) {
/*
* End of directory reached.
*/
done = 1;
+ ll_release_page(page, 0);
} else if (1 /* chain is exhausted*/) {
/*
* Normal case: continue to the next
* page.
*/
+ ll_release_page(page,
+ le32_to_cpu(dp->ldp_flags) &
+ LDF_COLLIDE);
fd->fd_dir.lfd_next = pos;
page = ll_get_dir_page(filp, inode, pos,
- 1, &chain);
+ &chain);
} else {
/*
* go into overflow page.
*/
+ LASSERT(le32_to_cpu(dp->ldp_flags) &
+ LDF_COLLIDE);
+ ll_release_page(page, 1);
}
} else {
pos = hash;
+ ll_release_page(page, 0);
}
} else {
rc = PTR_ERR(page);
}
fd->fd_dir.lfd_pos = pos;
- if (need_32bit)
- filp->f_pos = pos >> 32;
- else
- filp->f_pos = pos;
+ if (pos == MDS_DIR_END_OFF) {
+ if (api32)
+ filp->f_pos = LL_DIR_END_OFF_32BIT;
+ else
+ filp->f_pos = LL_DIR_END_OFF;
+ } else {
+ if (api32 && hash64)
+ filp->f_pos = pos >> 32;
+ else
+ filp->f_pos = pos;
+ }
filp->f_version = inode->i_version;
touch_atime(filp->f_vfsmnt, filp->f_dentry);
lum_size = sizeof(struct lov_user_md_v3);
break;
}
- default: {
+ default: {
CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
" %#08x != %#08x nor %#08x\n",
lump->lmm_magic, LOV_USER_MAGIC_V1,
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
0, lmmsize, LUSTRE_OPC_ANY,
NULL);
- if (op_data == NULL)
- RETURN(-ENOMEM);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
rc = md_getattr(sbi->ll_md_exp, op_data, &req);
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0,
0, LUSTRE_OPC_ANY, NULL);
- if (op_data == NULL)
- RETURN(-ENOMEM);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
op_data->op_valid |= OBD_MD_MDTIDX;
rc = md_getattr(sbi->ll_md_exp, op_data, NULL);
return rc;
}
+static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl)
+{
+ int cmd = qctl->qc_cmd;
+ int type = qctl->qc_type;
+ int id = qctl->qc_id;
+ int valid = qctl->qc_valid;
+ int rc = 0;
+ ENTRY;
+
+ switch (cmd) {
+ case LUSTRE_Q_INVALIDATE:
+ case LUSTRE_Q_FINVALIDATE:
+ case Q_QUOTAON:
+ case Q_QUOTAOFF:
+ case Q_SETQUOTA:
+ case Q_SETINFO:
+ if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
+ sbi->ll_flags & LL_SBI_RMT_CLIENT)
+ RETURN(-EPERM);
+ break;
+ case Q_GETQUOTA:
+ if (((type == USRQUOTA && cfs_curproc_euid() != id) ||
+ (type == GRPQUOTA && !in_egroup_p(id))) &&
+ (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
+ sbi->ll_flags & LL_SBI_RMT_CLIENT))
+ RETURN(-EPERM);
+ break;
+ case Q_GETINFO:
+ break;
+ default:
+ CERROR("unsupported quotactl op: %#x\n", cmd);
+ RETURN(-ENOTTY);
+ }
+
+ if (valid != QC_GENERAL) {
+ if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
+ RETURN(-EOPNOTSUPP);
+
+ if (cmd == Q_GETINFO)
+ qctl->qc_cmd = Q_GETOINFO;
+ else if (cmd == Q_GETQUOTA)
+ qctl->qc_cmd = Q_GETOQUOTA;
+ else
+ RETURN(-EINVAL);
+
+ switch (valid) {
+ case QC_MDTIDX:
+ rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
+ sizeof(*qctl), qctl, NULL);
+ break;
+ case QC_OSTIDX:
+ rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp,
+ sizeof(*qctl), qctl, NULL);
+ break;
+ case QC_UUID:
+ rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
+ sizeof(*qctl), qctl, NULL);
+ if (rc == -EAGAIN)
+ rc = obd_iocontrol(OBD_IOC_QUOTACTL,
+ sbi->ll_dt_exp,
+ sizeof(*qctl), qctl, NULL);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ if (rc)
+ RETURN(rc);
+
+ qctl->qc_cmd = cmd;
+ } else {
+ struct obd_quotactl *oqctl;
+
+ OBD_ALLOC_PTR(oqctl);
+ if (oqctl == NULL)
+ RETURN(-ENOMEM);
+
+ QCTL_COPY(oqctl, qctl);
+ rc = obd_quotactl(sbi->ll_md_exp, oqctl);
+ if (rc) {
+ if (rc != -EALREADY && cmd == Q_QUOTAON) {
+ oqctl->qc_cmd = Q_QUOTAOFF;
+ obd_quotactl(sbi->ll_md_exp, oqctl);
+ }
+ OBD_FREE_PTR(oqctl);
+ RETURN(rc);
+ }
+
+ QCTL_COPY(qctl, oqctl);
+ OBD_FREE_PTR(oqctl);
+ }
+
+ RETURN(rc);
+}
+
static int ll_dir_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
op_data = ll_prep_md_op_data(NULL, inode, NULL, filename, namelen,
0, LUSTRE_OPC_ANY, NULL);
- if (op_data == NULL)
- GOTO(out_free, rc = -ENOMEM);
+ if (IS_ERR(op_data))
+ GOTO(out_free, rc = PTR_ERR(op_data));
op_data->op_valid = OBD_MD_FLID;
rc = md_getattr_name(sbi->ll_md_exp, op_data, &request);
OBD_FREE_PTR(check);
RETURN(rc);
}
- case OBD_IOC_QUOTACTL: {
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
+ case LL_IOC_QUOTACTL_18: {
+ /* copy the old 1.x quota struct for internal use, then copy
+ * back into old format struct. For 1.8 compatibility. */
+ struct if_quotactl_18 *qctl_18;
+ struct if_quotactl *qctl_20;
+
+ OBD_ALLOC_PTR(qctl_18);
+ if (!qctl_18)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC_PTR(qctl_20);
+ if (!qctl_20)
+ GOTO(out_quotactl_18, rc = -ENOMEM);
+
+ if (cfs_copy_from_user(qctl_18, (void *)arg, sizeof(*qctl_18)))
+ GOTO(out_quotactl_20, rc = -ENOMEM);
+
+ QCTL_COPY(qctl_20, qctl_18);
+ qctl_20->qc_idx = 0;
+
+ /* XXX: dqb_valid was borrowed as a flag to mark that
+ * only mds quota is wanted */
+ if (qctl_18->qc_cmd == Q_GETQUOTA &&
+ qctl_18->qc_dqblk.dqb_valid) {
+ qctl_20->qc_valid = QC_MDTIDX;
+ qctl_20->qc_dqblk.dqb_valid = 0;
+ } else if (qctl_18->obd_uuid.uuid[0] != '\0') {
+ qctl_20->qc_valid = QC_UUID;
+ qctl_20->obd_uuid = qctl_18->obd_uuid;
+ } else {
+ qctl_20->qc_valid = QC_GENERAL;
+ }
+
+ rc = quotactl_ioctl(sbi, qctl_20);
+
+ if (rc == 0) {
+ QCTL_COPY(qctl_18, qctl_20);
+ qctl_18->obd_uuid = qctl_20->obd_uuid;
+
+ if (cfs_copy_to_user((void *)arg, qctl_18,
+ sizeof(*qctl_18)))
+ rc = -EFAULT;
+ }
+
+ out_quotactl_20:
+ OBD_FREE_PTR(qctl_20);
+ out_quotactl_18:
+ OBD_FREE_PTR(qctl_18);
+ RETURN(rc);
+ }
+#else
+#warning "remove old LL_IOC_QUOTACTL_18 compatibility code"
+#endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0) */
+ case LL_IOC_QUOTACTL: {
struct if_quotactl *qctl;
- int cmd, type, id, valid;
OBD_ALLOC_PTR(qctl);
if (!qctl)
if (cfs_copy_from_user(qctl, (void *)arg, sizeof(*qctl)))
GOTO(out_quotactl, rc = -EFAULT);
- cmd = qctl->qc_cmd;
- type = qctl->qc_type;
- id = qctl->qc_id;
- valid = qctl->qc_valid;
-
- switch (cmd) {
- case LUSTRE_Q_INVALIDATE:
- case LUSTRE_Q_FINVALIDATE:
- case Q_QUOTAON:
- case Q_QUOTAOFF:
- case Q_SETQUOTA:
- case Q_SETINFO:
- if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
- sbi->ll_flags & LL_SBI_RMT_CLIENT)
- GOTO(out_quotactl, rc = -EPERM);
- break;
- case Q_GETQUOTA:
- if (((type == USRQUOTA && cfs_curproc_euid() != id) ||
- (type == GRPQUOTA && !in_egroup_p(id))) &&
- (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
- sbi->ll_flags & LL_SBI_RMT_CLIENT))
- GOTO(out_quotactl, rc = -EPERM);
- break;
- case Q_GETINFO:
- break;
- default:
- CERROR("unsupported quotactl op: %#x\n", cmd);
- GOTO(out_quotactl, rc = -ENOTTY);
- }
-
- if (valid != QC_GENERAL) {
- if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
- GOTO(out_quotactl, rc = -EOPNOTSUPP);
-
- if (cmd == Q_GETINFO)
- qctl->qc_cmd = Q_GETOINFO;
- else if (cmd == Q_GETQUOTA)
- qctl->qc_cmd = Q_GETOQUOTA;
- else
- GOTO(out_quotactl, rc = -EINVAL);
-
- switch (valid) {
- case QC_MDTIDX:
- rc = obd_iocontrol(OBD_IOC_QUOTACTL,
- sbi->ll_md_exp,
- sizeof(*qctl), qctl, NULL);
- break;
- case QC_OSTIDX:
- rc = obd_iocontrol(OBD_IOC_QUOTACTL,
- sbi->ll_dt_exp,
- sizeof(*qctl), qctl, NULL);
- break;
- case QC_UUID:
- rc = obd_iocontrol(OBD_IOC_QUOTACTL,
- sbi->ll_md_exp,
- sizeof(*qctl), qctl, NULL);
- if (rc == -EAGAIN)
- rc = obd_iocontrol(OBD_IOC_QUOTACTL,
- sbi->ll_dt_exp,
- sizeof(*qctl), qctl,
- NULL);
- break;
- default:
- rc = -EINVAL;
- break;
- }
-
- if (rc)
- GOTO(out_quotactl, rc);
- else
- qctl->qc_cmd = cmd;
- } else {
- struct obd_quotactl *oqctl;
-
- OBD_ALLOC_PTR(oqctl);
- if (!oqctl)
- GOTO(out_quotactl, rc = -ENOMEM);
-
- QCTL_COPY(oqctl, qctl);
- rc = obd_quotactl(sbi->ll_md_exp, oqctl);
- if (rc) {
- if (rc != -EALREADY && cmd == Q_QUOTAON) {
- oqctl->qc_cmd = Q_QUOTAOFF;
- obd_quotactl(sbi->ll_md_exp, oqctl);
- }
- OBD_FREE_PTR(oqctl);
- GOTO(out_quotactl, rc);
- } else {
- QCTL_COPY(qctl, oqctl);
- OBD_FREE_PTR(oqctl);
- }
- }
+ rc = quotactl_ioctl(sbi, qctl);
- if (cfs_copy_to_user((void *)arg, qctl, sizeof(*qctl)))
+ if (rc == 0 && cfs_copy_to_user((void *)arg,qctl,sizeof(*qctl)))
rc = -EFAULT;
out_quotactl:
}
#endif
case LL_IOC_GETOBDCOUNT: {
- int count;
+ int count, vallen;
+ struct obd_export *exp;
if (cfs_copy_from_user(&count, (int *)arg, sizeof(int)))
RETURN(-EFAULT);
- if (!count) {
- /* get ost count */
- struct lov_obd *lov = &sbi->ll_dt_exp->exp_obd->u.lov;
- count = lov->desc.ld_tgt_count;
- } else {
- /* get mdt count */
- struct lmv_obd *lmv = &sbi->ll_md_exp->exp_obd->u.lmv;
- count = lmv->desc.ld_tgt_count;
+ /* get ost count when count is zero, get mdt count otherwise */
+ exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp;
+ vallen = sizeof(count);
+ rc = obd_get_info(exp, sizeof(KEY_TGT_COUNT), KEY_TGT_COUNT,
+ &vallen, &count, NULL);
+ if (rc) {
+ CERROR("get target count failed: %d\n", rc);
+ RETURN(rc);
}
if (cfs_copy_to_user((int *)arg, &count, sizeof(int)))
static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
{
+ struct inode *inode = file->f_mapping->host;
struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
- loff_t pos = file->f_pos;
- loff_t ret;
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ int api32 = ll_need_32bit_api(sbi);
+ loff_t ret = -EINVAL;
ENTRY;
- if (origin == 1 && offset >= 0 && file->f_pos == DIR_END_OFF) {
- CWARN("end of dir hash, DIR_END_OFF(-2) is returned\n");
- RETURN(DIR_END_OFF);
+ cfs_mutex_lock(&inode->i_mutex);
+ switch (origin) {
+ case SEEK_SET:
+ break;
+ case SEEK_CUR:
+ offset += file->f_pos;
+ break;
+ case SEEK_END:
+ if (offset > 0)
+ GOTO(out, ret);
+ if (api32)
+ offset += LL_DIR_END_OFF_32BIT;
+ else
+ offset += LL_DIR_END_OFF;
+ break;
+ default:
+ GOTO(out, ret);
}
- ret = default_llseek(file, offset, origin);
- if (ret >= 0) {
- struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
-
- if (ll_need_32bit_api(sbi)) {
- if (file->f_pos >> 32) {
- /* hash overflow, simple revert */
- file->f_pos = pos;
- RETURN(-EOVERFLOW);
- } else {
- fd->fd_dir.lfd_pos = file->f_pos << 32;
- }
- } else {
- fd->fd_dir.lfd_pos = file->f_pos;
+ if (offset >= 0 &&
+ ((api32 && offset <= LL_DIR_END_OFF_32BIT) ||
+ (!api32 && offset <= LL_DIR_END_OFF))) {
+ if (offset != file->f_pos) {
+ if ((api32 && offset == LL_DIR_END_OFF_32BIT) ||
+ (!api32 && offset == LL_DIR_END_OFF))
+ fd->fd_dir.lfd_pos = MDS_DIR_END_OFF;
+ else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH)
+ fd->fd_dir.lfd_pos = offset << 32;
+ else
+ fd->fd_dir.lfd_pos = offset;
+ file->f_pos = offset;
+ file->f_version = 0;
}
+ ret = offset;
}
- RETURN(ret);
+ GOTO(out, ret);
+
+out:
+ cfs_mutex_unlock(&inode->i_mutex);
+ return ret;
}
int ll_dir_open(struct inode *inode, struct file *file)
.release = ll_dir_release,
.read = generic_read_dir,
.readdir = ll_readdir,
- .ioctl = ll_dir_ioctl
+ .ioctl = ll_dir_ioctl,
+ .fsync = ll_fsync
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff