* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/module.h>
+#include <linux/statfs.h>
+#include <linux/time.h>
#include <linux/types.h>
#include <linux/version.h>
#include <linux/mm.h>
+#include <linux/user_namespace.h>
+#ifdef HAVE_UIDGID_HEADER
+# include <linux/uidgid.h>
+#endif
#include <lustre_ioctl.h>
-#include <lustre_lite.h>
#include <lustre_ha.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
struct kmem_cache *ll_file_data_slab;
-static struct list_head ll_super_blocks = LIST_HEAD_INIT(ll_super_blocks);
-static DEFINE_SPINLOCK(ll_sb_lock);
-
#ifndef log2
#define log2(n) ffz(~(n))
#endif
lru_page_max = pages / 2;
/* initialize ll_cache data */
- atomic_set(&sbi->ll_cache.ccc_users, 0);
- sbi->ll_cache.ccc_lru_max = lru_page_max;
- atomic_set(&sbi->ll_cache.ccc_lru_left, lru_page_max);
- spin_lock_init(&sbi->ll_cache.ccc_lru_lock);
- INIT_LIST_HEAD(&sbi->ll_cache.ccc_lru);
-
- atomic_set(&sbi->ll_cache.ccc_unstable_nr, 0);
- init_waitqueue_head(&sbi->ll_cache.ccc_unstable_waitq);
+ sbi->ll_cache = cl_cache_init(lru_page_max);
+ if (sbi->ll_cache == NULL) {
+ OBD_FREE(sbi, sizeof(*sbi));
+ RETURN(NULL);
+ }
sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
SBI_DEFAULT_READAHEAD_MAX);
class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
- spin_lock(&ll_sb_lock);
- list_add_tail(&sbi->ll_list, &ll_super_blocks);
- spin_unlock(&ll_sb_lock);
-
sbi->ll_flags |= LL_SBI_VERBOSE;
#ifdef ENABLE_CHECKSUM
sbi->ll_flags |= LL_SBI_CHECKSUM;
sbi->ll_sa_max = LL_SA_RPC_DEF;
atomic_set(&sbi->ll_sa_total, 0);
atomic_set(&sbi->ll_sa_wrong, 0);
+ atomic_set(&sbi->ll_sa_running, 0);
atomic_set(&sbi->ll_agl_total, 0);
sbi->ll_flags |= LL_SBI_AGL_ENABLED;
ENTRY;
if (sbi != NULL) {
- spin_lock(&ll_sb_lock);
- list_del(&sbi->ll_list);
- spin_unlock(&ll_sb_lock);
if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
+ if (sbi->ll_cache != NULL) {
+ cl_cache_decref(sbi->ll_cache);
+ sbi->ll_cache = NULL;
+ }
OBD_FREE(sbi, sizeof(*sbi));
}
EXIT;
static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
struct vfsmount *mnt)
{
- struct inode *root = 0;
+ struct inode *root = NULL;
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
- struct obd_capa *oc = NULL;
struct obd_statfs *osfs = NULL;
struct ptlrpc_request *request = NULL;
struct obd_connect_data *data = NULL;
struct obd_uuid *uuid;
struct md_op_data *op_data;
struct lustre_md lmd;
- obd_valid valid;
+ u64 valid;
int size, err, checksum;
ENTRY;
OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
OBD_CONNECT_MAX_EASIZE |
OBD_CONNECT_FLOCK_DEAD |
- OBD_CONNECT_DISP_STRIPE;
-
- if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
- data->ocd_connect_flags |= OBD_CONNECT_SOM;
+ OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
+ OBD_CONNECT_OPEN_BY_FID |
+ OBD_CONNECT_DIR_STRIPE |
+ OBD_CONNECT_BULK_MBITS |
+ OBD_CONNECT_SUBTREE;
#ifdef HAVE_LRU_RESIZE_SUPPORT
if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
if (sbi->ll_flags & LL_SBI_USER_XATTR)
data->ocd_connect_flags |= OBD_CONNECT_XATTR;
-#ifdef HAVE_MS_FLOCK_LOCK
- /* force vfs to use lustre handler for flock() calls - bug 10743 */
- sb->s_flags |= MS_FLOCK_LOCK;
-#endif
-#ifdef MS_HAS_NEW_AOPS
- sb->s_flags |= MS_HAS_NEW_AOPS;
-#endif
-
if (sbi->ll_flags & LL_SBI_FLOCK)
sbi->ll_fop = &ll_file_operations_flock;
else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
+ /* always ping even if server suppress_pings */
+ if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+ data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
+
data->ocd_brw_size = MD_MAX_BRW_SIZE;
err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
size = sizeof(*data);
err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
- KEY_CONN_DATA, &size, data, NULL);
+ KEY_CONN_DATA, &size, data);
if (err) {
CERROR("%s: Get connect data failed: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
sb->s_magic = LL_SUPER_MAGIC;
sb->s_maxbytes = MAX_LFS_FILESIZE;
sbi->ll_namelen = osfs->os_namelen;
- sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
!(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
}
}
- if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
- LCONSOLE_INFO("client enabled MDS capability!\n");
- sbi->ll_flags |= LL_SBI_MDS_CAPA;
- }
-
- if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
- LCONSOLE_INFO("client enabled OSS capability!\n");
- sbi->ll_flags |= LL_SBI_OSS_CAPA;
- }
-
if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
sbi->ll_flags |= LL_SBI_64BIT_HASH;
GOTO(out_md_fid, err = -ENODEV);
}
+ /* pass client page size via ocd_grant_blkbits, the server should report
+ * back its backend blocksize for grant calculation purpose */
+ data->ocd_grant_blkbits = PAGE_SHIFT;
+
data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_MAXBYTES |
OBD_CONNECT_EINPROGRESS |
OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
- OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS;
+ OBD_CONNECT_LAYOUTLOCK |
+ OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
+ OBD_CONNECT_BULK_MBITS;
- if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
- data->ocd_connect_flags |= OBD_CONNECT_SOM;
+ if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
+ data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
/* OBD_CONNECT_CKSUM should always be set, even if checksums are
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
+ /* always ping even if server suppress_pings */
+ if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+ data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
+
CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
"ocd_grant: %d\n", data->ocd_connect_flags,
data->ocd_version, data->ocd_grant);
mutex_unlock(&sbi->ll_lco.lco_lock);
fid_zero(&sbi->ll_root_fid);
- err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
+ err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
+ &sbi->ll_root_fid);
if (err) {
CERROR("cannot mds_connect: rc = %d\n", err);
GOTO(out_lock_cn_cb, err);
/* make root inode
* XXX: move this to after cbd setup? */
- valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA |
- OBD_MD_FLMODEASIZE;
+ valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
valid |= OBD_MD_FLRMTPERM;
else if (sbi->ll_flags & LL_SBI_ACL)
op_data->op_fid1 = sbi->ll_root_fid;
op_data->op_mode = 0;
- op_data->op_capa1 = oc;
op_data->op_valid = valid;
err = md_getattr(sbi->ll_md_exp, op_data, &request);
- if (oc)
- capa_put(oc);
+
OBD_FREE_PTR(op_data);
if (err) {
CERROR("%s: md_getattr failed for root: rc = %d\n",
ptlrpc_req_finished(request);
if (IS_ERR(root)) {
- if (lmd.lsm)
- obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
#ifdef CONFIG_FS_POSIX_ACL
if (lmd.posix_acl) {
posix_acl_release(lmd.posix_acl);
GOTO(out_root, err);
}
- err = ll_close_thread_start(&sbi->ll_lcq);
- if (err) {
- CERROR("cannot start close thread: rc %d\n", err);
- GOTO(out_root, err);
- }
-
#ifdef CONFIG_FS_POSIX_ACL
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
rct_init(&sbi->ll_rct);
cl_sb_init(sb);
err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
- KEY_CACHE_SET, sizeof(sbi->ll_cache),
- &sbi->ll_cache, NULL);
+ KEY_CACHE_SET, sizeof(*sbi->ll_cache),
+ sbi->ll_cache, NULL);
sb->s_root = d_make_root(root);
if (sb->s_root == NULL) {
out_dt:
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
- /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
- obd_zombie_barrier();
out_md_fid:
obd_fid_fini(sbi->ll_md_exp->exp_obd);
out_md:
{
int size, rc;
- *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
+ size = sizeof(*lmmsize);
+ rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
+ KEY_MAX_EASIZE, &size, lmmsize);
+ if (rc != 0) {
+ CERROR("%s: cannot get max LOV EA size: rc = %d\n",
+ sbi->ll_dt_exp->exp_obd->obd_name, rc);
+ RETURN(rc);
+ }
+
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
- KEY_MAX_EASIZE, &size, lmmsize, NULL);
+ KEY_MAX_EASIZE, &size, lmmsize);
if (rc)
CERROR("Get max mdsize error rc %d\n", rc);
RETURN(rc);
}
+/**
+ * Get the value of the default_easize parameter.
+ *
+ * \see client_obd::cl_default_mds_easize
+ *
+ * \param[in] sbi superblock info for this filesystem
+ * \param[out] lmmsize pointer to storage location for value
+ *
+ * \retval 0 on success
+ * \retval negative negated errno on failure
+ */
int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
- KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
+ KEY_DEFAULT_EASIZE, &size, lmmsize);
if (rc)
CERROR("Get default mdsize error rc %d\n", rc);
RETURN(rc);
}
-int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
+/**
+ * Set the default_easize parameter to the given value.
+ *
+ * \see client_obd::cl_default_mds_easize
+ *
+ * \param[in] sbi superblock info for this filesystem
+ * \param[in] lmmsize the size to set
+ *
+ * \retval 0 on success
+ * \retval negative negated errno on failure
+ */
+int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
{
- int size, rc;
-
- size = sizeof(int);
- rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
- KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
- if (rc)
- CERROR("Get max cookiesize error rc %d\n", rc);
+ int rc;
- RETURN(rc);
-}
+ if (lmmsize < sizeof(struct lov_mds_md) ||
+ lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
+ return -EINVAL;
-int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
-{
- int size, rc;
-
- size = sizeof(int);
- rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
- KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
- if (rc)
- CERROR("Get default cookiesize error rc %d\n", rc);
+ rc = obd_set_info_async(NULL, sbi->ll_md_exp,
+ sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
+ sizeof(int), &lmmsize, NULL);
RETURN(rc);
}
" flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
dentry->d_name.len, dentry->d_name.name,
dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
- dentry->d_parent, dentry->d_inode, d_count(dentry),
+ dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
dentry->d_flags, dentry->d_fsdata, subdirs);
if (dentry->d_inode != NULL)
ll_dump_inode(dentry->d_inode);
return;
list_for_each(tmp, &dentry->d_subdirs) {
- struct dentry *d = list_entry(tmp, struct dentry, d_u.d_child);
+ struct dentry *d = list_entry(tmp, struct dentry, d_child);
lustre_dump_dentry(d, recur - 1);
}
}
}
#endif
- ll_close_thread_shutdown(sbi->ll_lcq);
-
cl_sb_fini(sb);
list_del(&sbi->ll_conn_chain);
obd_fid_fini(sbi->ll_dt_exp->exp_obd);
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
- /* wait till all OSCs are gone, since cl_cache is accessing sbi.
- * see LU-2543. */
- obd_zombie_barrier();
lprocfs_unregister_mountpoint(sbi);
void ll_kill_super(struct super_block *sb)
{
- struct ll_sb_info *sbi;
-
- ENTRY;
+ struct ll_sb_info *sbi;
+ ENTRY;
/* not init sb ?*/
- if (!(sb->s_flags & MS_ACTIVE))
- return;
+ if (!(sb->s_flags & MS_ACTIVE))
+ return;
- sbi = ll_s2sbi(sb);
- /* we need restore s_dev from changed for clustred NFS before put_super
- * because new kernels have cached s_dev and change sb->s_dev in
- * put_super not affected real removing devices */
+ sbi = ll_s2sbi(sb);
+ /* we need restore s_dev from changed for clustred NFS before put_super
+ * because new kernels have cached s_dev and change sb->s_dev in
+ * put_super not affected real removing devices */
if (sbi) {
sb->s_dev = sbi->ll_sdev_orig;
sbi->ll_umounting = 1;
+
+ /* wait running statahead threads to quit */
+ while (atomic_read(&sbi->ll_sa_running) > 0) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
+ }
}
+
EXIT;
}
*flags &= ~tmp;
goto next;
}
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 51, 0)
- tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
- if (tmp) {
- /* Ignore deprecated mount option. The client will
- * always try to mount with ACL support, whether this
- * is used depends on whether server supports it. */
- LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
- "mount option 'acl'.\n");
+ tmp = ll_set_opt("context", s1, 1);
+ if (tmp)
goto next;
- }
- tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
+ tmp = ll_set_opt("fscontext", s1, 1);
+ if (tmp)
+ goto next;
+ tmp = ll_set_opt("defcontext", s1, 1);
+ if (tmp)
+ goto next;
+ tmp = ll_set_opt("rootcontext", s1, 1);
+ if (tmp)
+ goto next;
+ tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
if (tmp) {
- LCONSOLE_ERROR_MSG(0x152, "Ignoring deprecated "
- "mount option 'noacl'.\n");
+ *flags |= tmp;
goto next;
}
-#else
-#warning "{no}acl options have been deprecated since 1.8, please remove them"
-#endif
- tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
- if (tmp) {
- *flags |= tmp;
- goto next;
- }
tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
if (tmp) {
*flags |= tmp;
*flags &= ~tmp;
goto next;
}
- tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
- if (tmp) {
- *flags |= tmp;
- goto next;
- }
tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
if (tmp) {
*flags |= tmp;
*flags &= ~tmp;
goto next;
}
+ tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
+ if (tmp) {
+ *flags |= tmp;
+ goto next;
+ }
LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
s1);
RETURN(-EINVAL);
{
lli->lli_inode_magic = LLI_INODE_MAGIC;
lli->lli_flags = 0;
- lli->lli_ioepoch = 0;
- lli->lli_maxbytes = MAX_LFS_FILESIZE;
spin_lock_init(&lli->lli_lock);
lli->lli_posix_acl = NULL;
lli->lli_remote_perms = NULL;
mutex_init(&lli->lli_rmtperm_mutex);
/* Do not set lli_fid, it has been initialized already. */
fid_zero(&lli->lli_pfid);
- INIT_LIST_HEAD(&lli->lli_close_list);
- INIT_LIST_HEAD(&lli->lli_oss_capas);
atomic_set(&lli->lli_open_count, 0);
- lli->lli_mds_capa = NULL;
lli->lli_rmtperm_time = 0;
- lli->lli_pending_och = NULL;
lli->lli_mds_read_och = NULL;
lli->lli_mds_write_och = NULL;
lli->lli_mds_exec_och = NULL;
lli->lli_open_fd_exec_count = 0;
mutex_init(&lli->lli_och_mutex);
spin_lock_init(&lli->lli_agl_lock);
- lli->lli_has_smd = false;
spin_lock_init(&lli->lli_layout_lock);
- ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
+ ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
lli->lli_clob = NULL;
init_rwsem(&lli->lli_xattrs_list_rwsem);
lli->lli_sai = NULL;
spin_lock_init(&lli->lli_sa_lock);
lli->lli_opendir_pid = 0;
+ lli->lli_sa_enabled = 0;
+ lli->lli_def_stripe_offset = -1;
} else {
mutex_init(&lli->lli_size_mutex);
lli->lli_symlink_name = NULL;
init_rwsem(&lli->lli_trunc_sem);
- mutex_init(&lli->lli_write_mutex);
+ range_lock_tree_init(&lli->lli_write_tree);
init_rwsem(&lli->lli_glimpse_sem);
lli->lli_glimpse_time = 0;
INIT_LIST_HEAD(&lli->lli_agl_list);
if (err)
GOTO(out_free, err);
lsi->lsi_flags |= LSI_BDI_INITIALIZED;
+#ifdef HAVE_BDI_CAP_MAP_COPY
lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
+#else
+ lsi->lsi_bdi.capabilities = 0;
+#endif
err = ll_bdi_register(&lsi->lsi_bdi);
if (err)
GOTO(out_free, err);
/* connections, registrations, sb setup */
err = client_common_fill_super(sb, md, dt, mnt);
+ if (err < 0)
+ GOTO(out_free, err);
+
+ sbi->ll_client_common_fill_super_succeeded = 1;
out_free:
- if (md)
- OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
- if (dt)
- OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
- if (err)
- ll_put_super(sb);
- else if (sbi->ll_flags & LL_SBI_VERBOSE)
- LCONSOLE_WARN("Mounted %s\n", profilenm);
+ if (md)
+ OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
+ if (dt)
+ OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
+ if (lprof != NULL)
+ class_put_profile(lprof);
+ if (err)
+ ll_put_super(sb);
+ else if (sbi->ll_flags & LL_SBI_VERBOSE)
+ LCONSOLE_WARN("Mounted %s\n", profilenm);
- OBD_FREE_PTR(cfg);
- RETURN(err);
+ OBD_FREE_PTR(cfg);
+ RETURN(err);
} /* ll_fill_super */
void ll_put_super(struct super_block *sb)
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
char *profilenm = get_profile_name(sb);
- int ccc_count, next, force = 1, rc = 0;
+ long ccc_count;
+ int next, force = 1, rc = 0;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
- ll_print_capa_stat(sbi);
-
cfg.cfg_instance = sb;
lustre_end_log(sb, profilenm, &cfg);
/* Wait for unstable pages to be committed to stable storage */
if (force == 0) {
struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
- rc = l_wait_event(sbi->ll_cache.ccc_unstable_waitq,
- atomic_read(&sbi->ll_cache.ccc_unstable_nr) == 0,
+ rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
+ atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
&lwi);
}
- ccc_count = atomic_read(&sbi->ll_cache.ccc_unstable_nr);
+ ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
if (force == 0 && rc != -EINTR)
- LASSERTF(ccc_count == 0, "count: %i\n", ccc_count);
+ LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
/* We need to set force before the lov_disconnect in
}
}
- if (sbi->ll_lcq) {
- /* Only if client_common_fill_super succeeded */
- client_common_put_super(sb);
- }
+ if (sbi->ll_client_common_fill_super_succeeded) {
+ /* Only if client_common_fill_super succeeded */
+ client_common_put_super(sb);
+ }
next = 0;
while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
return inode;
}
-static void ll_dir_clear_lsm_md(struct inode *inode)
+void ll_dir_clear_lsm_md(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct lmv_stripe_md *lsm = md->lmv;
inode->i_mode = (inode->i_mode & ~S_IFMT) |
- (body->mode & S_IFMT);
+ (body->mbo_mode & S_IFMT);
LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
PFID(fid));
LTIME_S(inode->i_ctime) = 0;
inode->i_rdev = 0;
+#ifdef HAVE_BACKING_DEV_INFO
/* initializing backing dev info. */
inode->i_mapping->backing_dev_info =
&s2lsi(inode->i_sb)->lsi_bdi;
+#endif
inode->i_op = &ll_dir_inode_operations;
inode->i_fop = &ll_dir_operations;
lli->lli_fid = *fid;
LASSERT(lsm != NULL);
/* master object FID */
- lli->lli_pfid = body->fid1;
+ lli->lli_pfid = body->mbo_fid1;
CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
lli, PFID(fid), PFID(&lli->lli_pfid));
unlock_new_inode(inode);
}
}
- /* Here is where the lsm is being initialized(fill lmo_info) after
- * client retrieve MD stripe information from MDT. */
- return md_update_lsm_md(ll_i2mdexp(inode), lsm, md->body,
- ll_md_blocking_ast);
+ return 0;
}
static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
/* set the directory layout */
if (lli->lli_lsm_md == NULL) {
+ struct cl_attr *attr;
rc = ll_init_lsm_md(inode, md);
if (rc != 0)
RETURN(rc);
- lli->lli_lsm_md = lsm;
- /* set lsm_md to NULL, so the following free lustre_md
+ /* set md->lmv to NULL, so the following free lustre_md
* will not free this lsm */
md->lmv = NULL;
+ lli->lli_lsm_md = lsm;
+
+ OBD_ALLOC_PTR(attr);
+ if (attr == NULL)
+ RETURN(-ENOMEM);
+
+ /* validate the lsm */
+ rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
+ ll_md_blocking_ast);
+ if (rc != 0) {
+ OBD_FREE_PTR(attr);
+ RETURN(rc);
+ }
+
+ if (md->body->mbo_valid & OBD_MD_FLNLINK)
+ md->body->mbo_nlink = attr->cat_nlink;
+ if (md->body->mbo_valid & OBD_MD_FLSIZE)
+ md->body->mbo_size = attr->cat_size;
+ if (md->body->mbo_valid & OBD_MD_FLATIME)
+ md->body->mbo_atime = attr->cat_atime;
+ if (md->body->mbo_valid & OBD_MD_FLCTIME)
+ md->body->mbo_ctime = attr->cat_ctime;
+ if (md->body->mbo_valid & OBD_MD_FLMTIME)
+ md->body->mbo_mtime = attr->cat_mtime;
+
+ OBD_FREE_PTR(attr);
+
CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
RETURN(0);
struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
int idx;
- CERROR("%s: lmv layout mismatch "DFID"(%p)/"DFID"(%p)"
+ CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
"magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
"hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
- ll_get_fsname(inode->i_sb, NULL, 0),
- PFID(&lsm->lsm_md_master_fid), lsm,
- PFID(&old_lsm->lsm_md_master_fid), old_lsm,
+ ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
+ inode, lsm, old_lsm,
lsm->lsm_md_magic, old_lsm->lsm_md_magic,
lsm->lsm_md_stripe_count,
old_lsm->lsm_md_stripe_count,
RETURN(-EIO);
}
- rc = md_update_lsm_md(ll_i2mdexp(inode), ll_i2info(inode)->lli_lsm_md,
- md->body, ll_md_blocking_ast);
-
- RETURN(rc);
+ RETURN(0);
}
void ll_clear_inode(struct inode *inode)
LASSERT(lli->lli_opendir_pid == 0);
}
- spin_lock(&lli->lli_lock);
- ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
- spin_unlock(&lli->lli_lock);
md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
LASSERT(!lli->lli_open_fd_write_count);
#endif
lli->lli_inode_magic = LLI_INODE_DEAD;
- ll_clear_inode_capas(inode);
if (S_ISDIR(inode->i_mode))
ll_dir_clear_lsm_md(inode);
else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
* cl_object still uses inode lsm.
*/
cl_inode_fini(inode);
- lli->lli_has_smd = false;
EXIT;
}
-int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
- struct md_open_data **mod)
+static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
{
struct lustre_md md;
struct inode *inode = dentry->d_inode;
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
- rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
- &request, mod);
+ rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
if (rc) {
ptlrpc_req_finished(request);
if (rc == -ENOENT) {
/* inode size will be in ll_setattr_ost, can't do it now since dirty
* cache is not cleared yet. */
op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
+ if (S_ISREG(inode->i_mode))
+ mutex_lock(&inode->i_mutex);
rc = simple_setattr(dentry, &op_data->op_attr);
+ if (S_ISREG(inode->i_mode))
+ mutex_unlock(&inode->i_mutex);
op_data->op_attr.ia_valid = ia_valid;
- /* Extract epoch data if obtained. */
- op_data->op_handle = md.body->handle;
- op_data->op_ioepoch = md.body->ioepoch;
-
rc = ll_update_inode(inode, &md);
ptlrpc_req_finished(request);
RETURN(rc);
}
-/* Close IO epoch and send Size-on-MDS attribute update. */
-static int ll_setattr_done_writing(struct inode *inode,
- struct md_op_data *op_data,
- struct md_open_data *mod)
-{
- struct ll_inode_info *lli = ll_i2info(inode);
- int rc = 0;
- ENTRY;
-
- LASSERT(op_data != NULL);
- if (!S_ISREG(inode->i_mode))
- RETURN(0);
-
- CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
- op_data->op_ioepoch, PFID(&lli->lli_fid));
-
- op_data->op_flags = MF_EPOCH_CLOSE;
- ll_done_writing_attr(inode, op_data);
- ll_pack_inode2opdata(inode, op_data, NULL);
-
- rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
- if (rc == -EAGAIN) {
- /* MDS has instructed us to obtain Size-on-MDS attribute
- * from OSTs and send setattr to back to MDS. */
- rc = ll_som_update(inode, op_data);
- } else if (rc) {
- CERROR("%s: inode "DFID" mdc truncate failed: rc = %d\n",
- ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
- PFID(ll_inode2fid(inode)), rc);
- }
- RETURN(rc);
-}
-
-static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
-{
- struct obd_capa *capa;
- int rc;
-
- if (attr->ia_valid & ATTR_SIZE)
- capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
- else
- capa = ll_mdscapa_get(inode);
-
- rc = cl_setattr_ost(inode, attr, capa);
-
- if (attr->ia_valid & ATTR_SIZE)
- ll_truncate_free_capa(capa);
- else
- capa_put(capa);
-
- return rc;
-}
-
/* If this inode has objects allocated to it (lsm != NULL), then the OST
* object(s) determine the file size and mtime. Otherwise, the MDS will
* keep these values until such a time that objects are allocated for it.
struct inode *inode = dentry->d_inode;
struct ll_inode_info *lli = ll_i2info(inode);
struct md_op_data *op_data = NULL;
- struct md_open_data *mod = NULL;
- bool file_is_released = false;
- int rc = 0, rc1 = 0;
+ int rc = 0;
ENTRY;
CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
}
/* We mark all of the fields "set" so MDS/OST does not re-set them */
- if (attr->ia_valid & ATTR_CTIME) {
- attr->ia_ctime = CFS_CURRENT_TIME;
+ if (!(attr->ia_valid & ATTR_CTIME_SET) &&
+ (attr->ia_valid & ATTR_CTIME)) {
+ attr->ia_ctime = CURRENT_TIME;
attr->ia_valid |= ATTR_CTIME_SET;
}
if (!(attr->ia_valid & ATTR_ATIME_SET) &&
(attr->ia_valid & ATTR_ATIME)) {
- attr->ia_atime = CFS_CURRENT_TIME;
+ attr->ia_atime = CURRENT_TIME;
attr->ia_valid |= ATTR_ATIME_SET;
}
if (!(attr->ia_valid & ATTR_MTIME_SET) &&
(attr->ia_valid & ATTR_MTIME)) {
- attr->ia_mtime = CFS_CURRENT_TIME;
+ attr->ia_mtime = CURRENT_TIME;
attr->ia_valid |= ATTR_MTIME_SET;
}
LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
cfs_time_current_sec());
- /* We always do an MDS RPC, even if we're only changing the size;
- * only the MDS knows whether truncate() should fail with -ETXTBUSY */
-
- OBD_ALLOC_PTR(op_data);
- if (op_data == NULL)
- RETURN(-ENOMEM);
-
- if (!S_ISDIR(inode->i_mode)) {
+ if (S_ISREG(inode->i_mode)) {
if (attr->ia_valid & ATTR_SIZE)
inode_dio_write_done(inode);
mutex_unlock(&inode->i_mutex);
}
- /* truncate on a released file must failed with -ENODATA,
- * so size must not be set on MDS for released file
- * but other attributes must be set
- */
- if (S_ISREG(inode->i_mode)) {
- struct lov_stripe_md *lsm;
- __u32 gen;
-
- ll_layout_refresh(inode, &gen);
- lsm = ccc_inode_lsm_get(inode);
- if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
- file_is_released = true;
- ccc_inode_lsm_put(inode, lsm);
-
- if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
- if (file_is_released) {
- rc = ll_layout_restore(inode, 0, attr->ia_size);
- if (rc < 0)
- GOTO(out, rc);
-
- file_is_released = false;
- ll_layout_refresh(inode, &gen);
- }
+ /* We always do an MDS RPC, even if we're only changing the size;
+ * only the MDS knows whether truncate() should fail with -ETXTBUSY */
- /* If we are changing file size, file content is
- * modified, flag it. */
- attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
- spin_lock(&lli->lli_lock);
- lli->lli_flags |= LLIF_DATA_MODIFIED;
- spin_unlock(&lli->lli_lock);
- op_data->op_bias |= MDS_DATA_MODIFIED;
- }
- }
+ OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL)
+ GOTO(out, rc = -ENOMEM);
- memcpy(&op_data->op_attr, attr, sizeof(*attr));
+ if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
+ /* If we are changing file size, file content is
+ * modified, flag it. */
+ attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
+ op_data->op_bias |= MDS_DATA_MODIFIED;
+ ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
+ }
- /* Open epoch for truncate. */
- if (exp_connect_som(ll_i2mdexp(inode)) && !hsm_import &&
- (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
- op_data->op_flags = MF_EPOCH_OPEN;
+ op_data->op_attr = *attr;
- rc = ll_md_setattr(dentry, op_data, &mod);
+ rc = ll_md_setattr(dentry, op_data);
if (rc)
GOTO(out, rc);
- /* RPC to MDT is sent, cancel data modification flag */
- if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
- spin_lock(&lli->lli_lock);
- lli->lli_flags &= ~LLIF_DATA_MODIFIED;
- spin_unlock(&lli->lli_lock);
- }
-
- ll_ioepoch_open(lli, op_data->op_ioepoch);
- if (!S_ISREG(inode->i_mode) || file_is_released)
+ if (!S_ISREG(inode->i_mode) || hsm_import)
GOTO(out, rc = 0);
if (attr->ia_valid & (ATTR_SIZE |
ATTR_ATIME | ATTR_ATIME_SET |
- ATTR_MTIME | ATTR_MTIME_SET)) {
+ ATTR_MTIME | ATTR_MTIME_SET |
+ ATTR_CTIME | ATTR_CTIME_SET)) {
/* For truncate and utimes sending attributes to OSTs, setting
* mtime/atime to the past will be performed under PW [0:EOF]
* extent lock (new_size:EOF for truncate). It may seem
* excessive to send mtime/atime updates to OSTs when not
* setting times to past, but it is necessary due to possible
* time de-synchronization between MDT inode and OST objects */
- if (attr->ia_valid & ATTR_SIZE)
- down_write(&lli->lli_trunc_sem);
- rc = ll_setattr_ost(inode, attr);
- if (attr->ia_valid & ATTR_SIZE)
- up_write(&lli->lli_trunc_sem);
+ rc = cl_setattr_ost(lli->lli_clob, attr, 0);
+ }
+
+ /* If the file was restored, it needs to set dirty flag.
+ *
+ * We've already sent MDS_DATA_MODIFIED flag in
+ * ll_md_setattr() for truncate. However, the MDT refuses to
+ * set the HS_DIRTY flag on released files, so we have to set
+ * it again if the file has been restored. Please check how
+ * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
+ *
+ * Please notice that if the file is not released, the previous
+ * MDS_DATA_MODIFIED has taken effect and usually
+ * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
+ * This way we can save an RPC for common open + trunc
+ * operation. */
+ if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
+ struct hsm_state_set hss = {
+ .hss_valid = HSS_SETMASK,
+ .hss_setmask = HS_DIRTY,
+ };
+ int rc2;
+
+ rc2 = ll_hsm_state_set(inode, &hss);
+ /* truncate and write can happen at the same time, so that
+ * the file can be set modified even though the file is not
+ * restored from released state, and ll_hsm_state_set() is
+ * not applicable for the file, and rc2 < 0 is normal in this
+ * case. */
+ if (rc2 < 0)
+ CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
+ PFID(ll_inode2fid(inode)), rc2);
}
+
EXIT;
out:
- if (op_data) {
- if (op_data->op_ioepoch) {
- rc1 = ll_setattr_done_writing(inode, op_data, mod);
- if (!rc)
- rc = rc1;
- }
+ if (op_data != NULL)
ll_finish_md_op_data(op_data);
- }
- if (!S_ISDIR(inode->i_mode)) {
+
+ if (S_ISREG(inode->i_mode)) {
mutex_lock(&inode->i_mutex);
if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
inode_dio_wait(inode);
{
struct ll_inode_info *lli = ll_i2info(inode);
struct mdt_body *body = md->body;
- struct lov_stripe_md *lsm = md->lsm;
struct ll_sb_info *sbi = ll_i2sbi(inode);
- LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
- if (lsm != NULL) {
- if (!lli->lli_has_smd &&
- !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
- cl_file_inode_init(inode, md);
-
- lli->lli_maxbytes = lsm->lsm_maxbytes;
- if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
- lli->lli_maxbytes = MAX_LFS_FILESIZE;
- }
+ if (body->mbo_valid & OBD_MD_FLEASIZE)
+ cl_file_inode_init(inode, md);
if (S_ISDIR(inode->i_mode)) {
int rc;
}
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
- if (body->valid & OBD_MD_FLRMTPERM)
- ll_update_remote_perm(inode, md->remote_perm);
- }
+ if (body->mbo_valid & OBD_MD_FLRMTPERM)
+ ll_update_remote_perm(inode, md->remote_perm);
+ }
#ifdef CONFIG_FS_POSIX_ACL
- else if (body->valid & OBD_MD_FLACL) {
+ else if (body->mbo_valid & OBD_MD_FLACL) {
spin_lock(&lli->lli_lock);
if (lli->lli_posix_acl)
posix_acl_release(lli->lli_posix_acl);
spin_unlock(&lli->lli_lock);
}
#endif
- inode->i_ino = cl_fid_build_ino(&body->fid1,
+ inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
sbi->ll_flags & LL_SBI_32BIT_API);
- inode->i_generation = cl_fid_build_gen(&body->fid1);
+ inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
- if (body->valid & OBD_MD_FLATIME) {
- if (body->atime > LTIME_S(inode->i_atime))
- LTIME_S(inode->i_atime) = body->atime;
- lli->lli_lvb.lvb_atime = body->atime;
- }
- if (body->valid & OBD_MD_FLMTIME) {
- if (body->mtime > LTIME_S(inode->i_mtime)) {
- CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
- "to "LPU64"\n", inode->i_ino,
- LTIME_S(inode->i_mtime), body->mtime);
- LTIME_S(inode->i_mtime) = body->mtime;
- }
- lli->lli_lvb.lvb_mtime = body->mtime;
- }
- if (body->valid & OBD_MD_FLCTIME) {
- if (body->ctime > LTIME_S(inode->i_ctime))
- LTIME_S(inode->i_ctime) = body->ctime;
- lli->lli_lvb.lvb_ctime = body->ctime;
- }
- if (body->valid & OBD_MD_FLMODE)
- inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
- if (body->valid & OBD_MD_FLTYPE)
- inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
- LASSERT(inode->i_mode != 0);
- if (S_ISREG(inode->i_mode)) {
- inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
- } else {
- inode->i_blkbits = inode->i_sb->s_blocksize_bits;
- }
- if (body->valid & OBD_MD_FLUID)
- inode->i_uid = make_kuid(&init_user_ns, body->uid);
- if (body->valid & OBD_MD_FLGID)
- inode->i_gid = make_kgid(&init_user_ns, body->gid);
- if (body->valid & OBD_MD_FLFLAGS)
- inode->i_flags = ll_ext_to_inode_flags(body->flags);
- if (body->valid & OBD_MD_FLNLINK)
- set_nlink(inode, body->nlink);
- if (body->valid & OBD_MD_FLRDEV)
- inode->i_rdev = old_decode_dev(body->rdev);
-
- if (body->valid & OBD_MD_FLID) {
+ if (body->mbo_valid & OBD_MD_FLATIME) {
+ if (body->mbo_atime > LTIME_S(inode->i_atime))
+ LTIME_S(inode->i_atime) = body->mbo_atime;
+ lli->lli_atime = body->mbo_atime;
+ }
+
+ if (body->mbo_valid & OBD_MD_FLMTIME) {
+ if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
+ CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
+ "to "LPU64"\n", inode->i_ino,
+ LTIME_S(inode->i_mtime), body->mbo_mtime);
+ LTIME_S(inode->i_mtime) = body->mbo_mtime;
+ }
+ lli->lli_mtime = body->mbo_mtime;
+ }
+
+ if (body->mbo_valid & OBD_MD_FLCTIME) {
+ if (body->mbo_ctime > LTIME_S(inode->i_ctime))
+ LTIME_S(inode->i_ctime) = body->mbo_ctime;
+ lli->lli_ctime = body->mbo_ctime;
+ }
+
+ if (body->mbo_valid & OBD_MD_FLMODE)
+ inode->i_mode = (inode->i_mode & S_IFMT) |
+ (body->mbo_mode & ~S_IFMT);
+
+ if (body->mbo_valid & OBD_MD_FLTYPE)
+ inode->i_mode = (inode->i_mode & ~S_IFMT) |
+ (body->mbo_mode & S_IFMT);
+
+ LASSERT(inode->i_mode != 0);
+ if (S_ISREG(inode->i_mode))
+ inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
+ LL_MAX_BLKSIZE_BITS);
+ else
+ inode->i_blkbits = inode->i_sb->s_blocksize_bits;
+
+ if (body->mbo_valid & OBD_MD_FLUID)
+ inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
+ if (body->mbo_valid & OBD_MD_FLGID)
+ inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
+ if (body->mbo_valid & OBD_MD_FLFLAGS)
+ inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
+ if (body->mbo_valid & OBD_MD_FLNLINK)
+ set_nlink(inode, body->mbo_nlink);
+ if (body->mbo_valid & OBD_MD_FLRDEV)
+ inode->i_rdev = old_decode_dev(body->mbo_rdev);
+
+ if (body->mbo_valid & OBD_MD_FLID) {
/* FID shouldn't be changed! */
if (fid_is_sane(&lli->lli_fid)) {
- LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
+ LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
"Trying to change FID "DFID
" to the "DFID", inode "DFID"(%p)\n",
- PFID(&lli->lli_fid), PFID(&body->fid1),
+ PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
PFID(ll_inode2fid(inode)), inode);
} else {
- lli->lli_fid = body->fid1;
+ lli->lli_fid = body->mbo_fid1;
}
}
- LASSERT(fid_seq(&lli->lli_fid) != 0);
-
- if (body->valid & OBD_MD_FLSIZE) {
- if (exp_connect_som(ll_i2mdexp(inode)) &&
- S_ISREG(inode->i_mode)) {
- struct lustre_handle lockh;
- ldlm_mode_t mode;
-
- /* As it is possible a blocking ast has been processed
- * by this time, we need to check there is an UPDATE
- * lock on the client and set LLIF_MDS_SIZE_LOCK holding
- * it. */
- mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
- &lockh, LDLM_FL_CBPENDING,
- LCK_CR | LCK_CW |
- LCK_PR | LCK_PW);
- if (mode) {
- if (lli->lli_flags & (LLIF_DONE_WRITING |
- LLIF_EPOCH_PENDING |
- LLIF_SOM_DIRTY)) {
- CERROR("%s: inode "DFID" flags %u still"
- " has size authority! do not "
- "trust the size from MDS\n",
- sbi->ll_md_exp->exp_obd->obd_name,
- PFID(ll_inode2fid(inode)),
- lli->lli_flags);
- } else {
- /* Use old size assignment to avoid
- * deadlock bz14138 & bz14326 */
- i_size_write(inode, body->size);
- spin_lock(&lli->lli_lock);
- lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
- spin_unlock(&lli->lli_lock);
- }
- ldlm_lock_decref(&lockh, mode);
- }
- } else {
- /* Use old size assignment to avoid
- * deadlock bz14138 & bz14326 */
- i_size_write(inode, body->size);
-
- CDEBUG(D_VFSTRACE,
- "inode="DFID", updating i_size %llu\n",
- PFID(ll_inode2fid(inode)),
- (unsigned long long)body->size);
- }
+ LASSERT(fid_seq(&lli->lli_fid) != 0);
- if (body->valid & OBD_MD_FLBLOCKS)
- inode->i_blocks = body->blocks;
- }
+ if (body->mbo_valid & OBD_MD_FLSIZE) {
+ i_size_write(inode, body->mbo_size);
- if (body->valid & OBD_MD_FLMDSCAPA) {
- LASSERT(md->mds_capa);
- ll_add_capa(inode, md->mds_capa);
- }
- if (body->valid & OBD_MD_FLOSSCAPA) {
- LASSERT(md->oss_capa);
- ll_add_capa(inode, md->oss_capa);
- }
+ CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
+ PFID(ll_inode2fid(inode)),
+ (unsigned long long)body->mbo_size);
- if (body->valid & OBD_MD_TSTATE) {
- if (body->t_state & MS_RESTORE)
- lli->lli_flags |= LLIF_FILE_RESTORING;
+ if (body->mbo_valid & OBD_MD_FLBLOCKS)
+ inode->i_blocks = body->mbo_blocks;
+ }
+
+ if (body->mbo_valid & OBD_MD_TSTATE) {
+ /* Set LLIF_FILE_RESTORING if restore ongoing and
+ * clear it when done to ensure to start again
+ * glimpsing updated attrs
+ */
+ if (body->mbo_t_state & MS_RESTORE)
+ ll_file_set_flag(lli, LLIF_FILE_RESTORING);
+ else
+ ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
}
return 0;
CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
PFID(&lli->lli_fid), inode);
- LASSERT(!lli->lli_has_smd);
-
/* Core attributes from the MDS first. This is a new inode, and
* the VFS doesn't zero times in the core inode so we have to do
* it ourselves. They will be overwritten by either MDS or OST
/* OIDEBUG(inode); */
- /* initializing backing dev info. */
- inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
-
-
+#ifdef HAVE_BACKING_DEV_INFO
+ /* initializing backing dev info. */
+ inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
+#endif
if (S_ISREG(inode->i_mode)) {
struct ll_sb_info *sbi = ll_i2sbi(inode);
inode->i_op = &ll_file_inode_operations;
void ll_delete_inode(struct inode *inode)
{
- struct cl_inode_info *lli = cl_i2info(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
- /* discard all dirty pages before truncating them, required by
- * osc_extent implementation at LU-1030. */
- cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
- CL_FSYNC_DISCARD, 1);
-
- truncate_inode_pages(&inode->i_data, 0);
-
- /* Workaround for LU-118 */
- if (inode->i_data.nrpages) {
- spin_lock_irq(&inode->i_data.tree_lock);
- spin_unlock_irq(&inode->i_data.tree_lock);
- LASSERTF(inode->i_data.nrpages == 0,
- "inode="DFID"(%p) nrpages=%lu, see "
- "http://jira.whamcloud.com/browse/LU-118\n",
- PFID(ll_inode2fid(inode)), inode,
- inode->i_data.nrpages);
- }
- /* Workaround end */
+ /* It is last chance to write out dirty pages,
+ * otherwise we may lose data while umount */
+ cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
+
+ truncate_inode_pages_final(&inode->i_data);
+
+ LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
+ "see https://jira.hpdd.intel.com/browse/LU-118\n",
+ PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
#ifdef HAVE_SBOPS_EVICT_INODE
ll_clear_inode(inode);
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- flags = body->flags;
+ flags = body->mbo_flags;
ptlrpc_req_finished(req);
- RETURN(put_user(flags, (int *)arg));
+ RETURN(put_user(flags, (int __user *)arg));
}
case FSFILT_IOC_SETFLAGS: {
- struct lov_stripe_md *lsm;
- struct obd_info oinfo = { { { 0 } } };
- struct md_op_data *op_data;
+ struct iattr *attr;
+ struct md_op_data *op_data;
+ struct cl_object *obj;
- if (get_user(flags, (int *)arg))
- RETURN(-EFAULT);
+ if (get_user(flags, (int __user *)arg))
+ RETURN(-EFAULT);
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
- ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
+ op_data->op_attr_flags = flags;
op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
- rc = md_setattr(sbi->ll_md_exp, op_data,
- NULL, 0, NULL, 0, &req, NULL);
+ rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
ll_finish_md_op_data(op_data);
ptlrpc_req_finished(req);
if (rc)
inode->i_flags = ll_ext_to_inode_flags(flags);
- lsm = ccc_inode_lsm_get(inode);
- if (!lsm_has_objects(lsm)) {
- ccc_inode_lsm_put(inode, lsm);
+ obj = ll_i2info(inode)->lli_clob;
+ if (obj == NULL)
RETURN(0);
- }
- OBDO_ALLOC(oinfo.oi_oa);
- if (!oinfo.oi_oa) {
- ccc_inode_lsm_put(inode, lsm);
+ OBD_ALLOC_PTR(attr);
+ if (attr == NULL)
RETURN(-ENOMEM);
- }
- oinfo.oi_md = lsm;
- oinfo.oi_oa->o_oi = lsm->lsm_oi;
- oinfo.oi_oa->o_flags = flags;
- oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
- OBD_MD_FLGROUP;
- oinfo.oi_capa = ll_mdscapa_get(inode);
- obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
- rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
- capa_put(oinfo.oi_capa);
- OBDO_FREE(oinfo.oi_oa);
- ccc_inode_lsm_put(inode, lsm);
-
- if (rc && rc != -EPERM && rc != -EACCES)
- CERROR("osc_setattr_async fails: rc = %d\n", rc);
+ attr->ia_valid = ATTR_ATTR_FLAG;
+ rc = cl_setattr_ost(obj, attr, flags);
+
+ OBD_FREE_PTR(attr);
RETURN(rc);
}
default:
return 0;
}
+/**
+ * Cleanup the open handle that is cached on MDT-side.
+ *
+ * For open case, the client side open handling thread may hit error
+ * after the MDT grant the open. Under such case, the client should
+ * send close RPC to the MDT as cleanup; otherwise, the open handle
+ * on the MDT will be leaked there until the client umount or evicted.
+ *
+ * In further, if someone unlinked the file, because the open handle
+ * holds the reference on such file/object, then it will block the
+ * subsequent threads that want to locate such object via FID.
+ *
+ * \param[in] sb super block for this file-system
+ * \param[in] open_req pointer to the original open request
+ */
+void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
+{
+ struct mdt_body *body;
+ struct md_op_data *op_data;
+ struct ptlrpc_request *close_req = NULL;
+ struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
+ ENTRY;
+
+ body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
+ OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL) {
+ CWARN("%s: cannot allocate op_data to release open handle for "
+ DFID"\n",
+ ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
+
+ RETURN_EXIT;
+ }
+
+ op_data->op_fid1 = body->mbo_fid1;
+ op_data->op_handle = body->mbo_handle;
+ op_data->op_mod_time = cfs_time_current_sec();
+ md_close(exp, op_data, NULL, &close_req);
+ ptlrpc_req_finished(close_req);
+ ll_finish_md_op_data(op_data);
+
+ EXIT;
+}
+
int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
struct super_block *sb, struct lookup_intent *it)
{
struct ll_sb_info *sbi = NULL;
- struct lustre_md md = { 0 };
+ struct lustre_md md = { NULL };
int rc;
ENTRY;
- LASSERT(*inode || sb);
- sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
- rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
- sbi->ll_md_exp, &md);
- if (rc)
- RETURN(rc);
+ LASSERT(*inode || sb);
+ sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
+ rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
+ sbi->ll_md_exp, &md);
+ if (rc != 0)
+ GOTO(cleanup, rc);
if (*inode) {
rc = ll_update_inode(*inode, &md);
} else {
LASSERT(sb != NULL);
- /*
- * At this point server returns to client's same fid as client
- * generated for creating. So using ->fid1 is okay here.
- */
- LASSERT(fid_is_sane(&md.body->fid1));
+ /*
+ * At this point server returns to client's same fid as client
+ * generated for creating. So using ->fid1 is okay here.
+ */
+ if (!fid_is_sane(&md.body->mbo_fid1)) {
+ CERROR("%s: Fid is insane "DFID"\n",
+ ll_get_fsname(sb, NULL, 0),
+ PFID(&md.body->mbo_fid1));
+ GOTO(out, rc = -EINVAL);
+ }
- *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1,
+ *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
sbi->ll_flags & LL_SBI_32BIT_API),
&md);
if (IS_ERR(*inode)) {
* 2. layout was changed by another client
* 3. proc2: refresh layout and layout lock granted
* 4. proc1: to apply a stale layout */
- if (it != NULL && it->d.lustre.it_lock_mode != 0) {
+ if (it != NULL && it->it_lock_mode != 0) {
struct lustre_handle lockh;
struct ldlm_lock *lock;
- lockh.cookie = it->d.lustre.it_lock_handle;
+ lockh.cookie = it->it_lock_handle;
lock = ldlm_handle2lock(&lockh);
LASSERT(lock != NULL);
if (ldlm_has_layout(lock)) {
conf.coc_opc = OBJECT_CONF_SET;
conf.coc_inode = *inode;
conf.coc_lock = lock;
- conf.u.coc_md = &md;
+ conf.u.coc_layout = md.layout;
(void)ll_layout_conf(*inode, &conf);
}
LDLM_LOCK_PUT(lock);
}
+ GOTO(out, rc = 0);
+
out:
- if (md.lsm != NULL)
- obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
md_free_lustre_md(sbi->ll_md_exp, &md);
- RETURN(rc);
+
+cleanup:
+ if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
+ ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
+
+ return rc;
}
-int ll_obd_statfs(struct inode *inode, void *arg)
+int ll_obd_statfs(struct inode *inode, void __user *arg)
{
struct ll_sb_info *sbi = NULL;
struct obd_export *exp;
char *buf = NULL;
struct obd_ioctl_data *data = NULL;
__u32 type;
- __u32 flags;
int len = 0, rc;
if (!inode || !(sbi = ll_i2sbi(inode)))
else
GOTO(out_statfs, rc = -ENODEV);
- flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
- rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
+ rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
if (rc)
GOTO(out_statfs, rc);
out_statfs:
/* Note we have not called client_common_fill_super yet, so
proc fns must be able to handle that! */
- rc = class_process_proc_seq_param(PARAM_LLITE, lprocfs_llite_obd_vars,
- lcfg, sb);
+ rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
+ lcfg, sb);
if (rc > 0)
rc = 0;
return rc;
}
-/* this function prepares md_op_data hint for passing ot down to MD stack. */
-struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
- struct inode *i1, struct inode *i2,
- const char *name, int namelen,
- int mode, __u32 opc, void *data)
+/* this function prepares md_op_data hint for passing it down to MD stack. */
+struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
+ struct inode *i1, struct inode *i2,
+ const char *name, size_t namelen,
+ __u32 mode, __u32 opc, void *data)
{
- LASSERT(i1 != NULL);
+ LASSERT(i1 != NULL);
if (name == NULL) {
/* Do not reuse namelen for something else. */
return ERR_PTR(-EINVAL);
}
- if (op_data == NULL)
- OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL)
+ OBD_ALLOC_PTR(op_data);
- if (op_data == NULL)
- return ERR_PTR(-ENOMEM);
+ if (op_data == NULL)
+ return ERR_PTR(-ENOMEM);
ll_i2gids(op_data->op_suppgids, i1, i2);
op_data->op_fid1 = *ll_inode2fid(i1);
- op_data->op_capa1 = ll_mdscapa_get(i1);
- if (S_ISDIR(i1->i_mode))
+ op_data->op_default_stripe_offset = -1;
+ if (S_ISDIR(i1->i_mode)) {
op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
+ if (opc == LUSTRE_OPC_MKDIR)
+ op_data->op_default_stripe_offset =
+ ll_i2info(i1)->lli_def_stripe_offset;
+ }
if (i2) {
op_data->op_fid2 = *ll_inode2fid(i2);
- op_data->op_capa2 = ll_mdscapa_get(i2);
if (S_ISDIR(i2->i_mode))
op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
} else {
fid_zero(&op_data->op_fid2);
- op_data->op_capa2 = NULL;
}
if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
op_data->op_cap = cfs_curproc_cap_pack();
- op_data->op_bias = 0;
- op_data->op_cli_flags = 0;
if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
- filename_is_volatile(name, namelen, NULL))
+ filename_is_volatile(name, namelen, &op_data->op_mds)) {
op_data->op_bias |= MDS_CREATE_VOLATILE;
- op_data->op_mds = 0;
- op_data->op_data = data;
-
- /* If the file is being opened after mknod() (normally due to NFS)
- * try to use the default stripe data from parent directory for
- * allocating OST objects. Try to pass the parent FID to MDS. */
- if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
- !ll_i2info(i2)->lli_has_smd) {
- struct ll_inode_info *lli = ll_i2info(i2);
-
- spin_lock(&lli->lli_lock);
- if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
- op_data->op_fid1 = lli->lli_pfid;
- spin_unlock(&lli->lli_lock);
- /** We ignore parent's capability temporary. */
+ } else {
+ op_data->op_mds = 0;
}
-
- /* When called by ll_setattr_raw, file is i1. */
- if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
- op_data->op_bias |= MDS_DATA_MODIFIED;
+ op_data->op_data = data;
return op_data;
}
void ll_finish_md_op_data(struct md_op_data *op_data)
{
- capa_put(op_data->op_capa1);
- capa_put(op_data->op_capa2);
OBD_FREE_PTR(op_data);
}
if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
seq_puts(seq, ",user_fid2path");
+ if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
+ seq_puts(seq, ",always_ping");
+
RETURN(0);
}
if (!obd)
RETURN(-ENOENT);
- if (copy_to_user((void *)arg, obd->obd_name,
+ if (copy_to_user((void __user *)arg, obd->obd_name,
strlen(obd->obd_name) + 1))
RETURN(-EFAULT);
{
char *buf, *path = NULL;
struct dentry *dentry = NULL;
- struct ccc_object *obj = cl_inode2ccc(page->mapping->host);
+ struct inode *inode = page->mapping->host;
/* this can be called inside spin lock so use GFP_ATOMIC. */
buf = (char *)__get_free_page(GFP_ATOMIC);
"%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
"(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
- PFID(&obj->cob_header.coh_lu.loh_fid),
+ PFID(ll_inode2fid(inode)),
(path && !IS_ERR(path)) ? path : "", ioret);
if (dentry != NULL)
free_page((unsigned long)buf);
}
+ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
+ struct lov_user_md **kbuf)
+{
+ struct lov_user_md lum;
+ ssize_t lum_size;
+ ENTRY;
+
+ if (copy_from_user(&lum, md, sizeof(lum)))
+ RETURN(-EFAULT);
+
+ lum_size = ll_lov_user_md_size(&lum);
+ if (lum_size < 0)
+ RETURN(lum_size);
+
+ OBD_ALLOC(*kbuf, lum_size);
+ if (*kbuf == NULL)
+ RETURN(-ENOMEM);
+
+ if (copy_from_user(*kbuf, md, lum_size) != 0) {
+ OBD_FREE(*kbuf, lum_size);
+ RETURN(-EFAULT);
+ }
+
+ RETURN(lum_size);
+}
+
/*
* Compute llite root squash state after a change of root squash
* configuration setting or add/remove of a lnet nid
up_write(&squash->rsi_sem);
}
+/**
+ * Parse linkea content to extract information about a given hardlink
+ *
+ * \param[in] ldata - Initialized linkea data
+ * \param[in] linkno - Link identifier
+ * \param[out] parent_fid - The entry's parent FID
+ * \param[out] ln - Entry name destination buffer
+ *
+ * \retval 0 on success
+ * \retval Appropriate negative error code on failure
+ */
+static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
+ struct lu_fid *parent_fid, struct lu_name *ln)
+{
+ unsigned int idx;
+ int rc;
+ ENTRY;
+ rc = linkea_init(ldata);
+ if (rc < 0)
+ RETURN(rc);
+
+ if (linkno >= ldata->ld_leh->leh_reccount)
+ /* beyond last link */
+ RETURN(-ENODATA);
+
+ linkea_first_entry(ldata);
+ for (idx = 0; ldata->ld_lee != NULL; idx++) {
+ linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
+ parent_fid);
+ if (idx == linkno)
+ break;
+
+ linkea_next_entry(ldata);
+ }
+
+ if (idx < linkno)
+ RETURN(-ENODATA);
+
+ RETURN(0);
+}
+
+/**
+ * Get parent FID and name of an identified link. Operation is performed for
+ * a given link number, letting the caller iterate over linkno to list one or
+ * all links of an entry.
+ *
+ * \param[in] file - File descriptor against which to perform the operation
+ * \param[in,out] arg - User-filled structure containing the linkno to operate
+ * on and the available size. It is eventually filled with
+ * the requested information or left untouched on error
+ *
+ * \retval - 0 on success
+ * \retval - Appropriate negative error code on failure
+ */
+int ll_getparent(struct file *file, struct getparent __user *arg)
+{
+ struct dentry *dentry = file->f_path.dentry;
+ struct inode *inode = dentry->d_inode;
+ struct linkea_data *ldata;
+ struct lu_buf buf = LU_BUF_NULL;
+ struct lu_name ln;
+ struct lu_fid parent_fid;
+ __u32 linkno;
+ __u32 name_size;
+ int rc;
+
+ ENTRY;
+
+ if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
+ !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
+ RETURN(-EPERM);
+
+ if (get_user(name_size, &arg->gp_name_size))
+ RETURN(-EFAULT);
+
+ if (get_user(linkno, &arg->gp_linkno))
+ RETURN(-EFAULT);
+
+ if (name_size > PATH_MAX)
+ RETURN(-EINVAL);
+
+ OBD_ALLOC(ldata, sizeof(*ldata));
+ if (ldata == NULL)
+ RETURN(-ENOMEM);
+
+ rc = linkea_data_new(ldata, &buf);
+ if (rc < 0)
+ GOTO(ldata_free, rc);
+
+ rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
+ if (rc < 0)
+ GOTO(lb_free, rc);
+
+ rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
+ if (rc < 0)
+ GOTO(lb_free, rc);
+
+ if (ln.ln_namelen >= name_size)
+ GOTO(lb_free, rc = -EOVERFLOW);
+
+ if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
+ GOTO(lb_free, rc = -EFAULT);
+
+ if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
+ GOTO(lb_free, rc = -EFAULT);
+
+ if (put_user('\0', arg->gp_name + ln.ln_namelen))
+ GOTO(lb_free, rc = -EFAULT);
+
+lb_free:
+ lu_buf_free(&buf);
+ldata_free:
+ OBD_FREE(ldata, sizeof(*ldata));
+
+ RETURN(rc);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff