Viewing: llite_lib.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Lustre Light Super operations
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/audit.h>
#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/file.h>
#include <linux/fs_struct.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/statfs.h>
#include <linux/time.h>
#include <linux/types.h>
#include <linux/uaccess.h>
#include <linux/uidgid.h>
#include <linux/user_namespace.h>
#include <linux/uuid.h>
#include <linux/version.h>
#ifdef HAVE_FILEATTR_GET
#include <linux/fileattr.h>
#endif
#include <linux/cpu.h>
#include <uapi/linux/lustre/lustre_ioctl.h>
#include <lustre_ioctl_old.h>
#include <uapi/linux/mount.h>
#include <lustre_ha.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
#include <lustre_disk.h>
#include <uapi/linux/lustre/lustre_param.h>
#include <lustre_log.h>
#include <cl_object.h>
#include <obd_cksum.h>
#include "llite_internal.h"
#include <linux/key.h>
#include <linux/key-type.h>
#include <lustre_sec.h>
struct kmem_cache *ll_file_data_slab;
#ifndef log2
#define log2(n) ffz(~(n))
#endif
struct proj_sfs_cache {
unsigned int psc_id;
struct rhash_head psc_linkage;
struct kstatfs psc_sfs;
time64_t psc_age;
struct mutex psc_mutex;
};
static const struct rhashtable_params proj_sfs_cache_params = {
.key_len = sizeof(unsigned int),
.key_offset = offsetof(struct proj_sfs_cache, psc_id),
.head_offset = offsetof(struct proj_sfs_cache, psc_linkage),
};
/*
* If there is only one number of core visible to Lustre,
* async readahead will be disabled, to avoid massive over
* subscription, we use 1/2 of active cores as default max
* async readahead requests.
*/
static inline unsigned int ll_get_ra_async_max_active(void)
{
return cfs_cpt_weight(cfs_cpt_tab, CFS_CPT_ANY) >> 1;
}
static struct ll_sb_info *ll_init_sbi(struct lustre_sb_info *lsi)
{
struct ll_sb_info *sbi = NULL;
unsigned long pages;
unsigned long lru_page_max;
struct sysinfo si;
int rc;
ENTRY;
OBD_ALLOC_PTR(sbi);
if (sbi == NULL)
RETURN(ERR_PTR(-ENOMEM));
rc = pcc_super_init(&sbi->ll_pcc_super);
if (rc < 0)
GOTO(out_sbi, rc);
spin_lock_init(&sbi->ll_lock);
mutex_init(&sbi->ll_lco.lco_lock);
spin_lock_init(&sbi->ll_pp_extent_lock);
spin_lock_init(&sbi->ll_process_lock);
sbi->lsi = lsi;
sbi->ll_rw_stats_on = 0;
sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
si_meminfo(&si);
pages = si.totalram - si.totalhigh;
lru_page_max = pages / 2;
sbi->ll_ra_info.ra_async_max_active = ll_get_ra_async_max_active();
sbi->ll_ra_info.ll_readahead_wq =
cfs_cpt_bind_workqueue("ll-readahead-wq", cfs_cpt_tab,
0, CFS_CPT_ANY,
sbi->ll_ra_info.ra_async_max_active);
if (IS_ERR(sbi->ll_ra_info.ll_readahead_wq))
GOTO(out_pcc, rc = PTR_ERR(sbi->ll_ra_info.ll_readahead_wq));
/* initialize ll_cache data */
sbi->ll_cache = cl_cache_init(lru_page_max);
if (sbi->ll_cache == NULL)
GOTO(out_destroy_ra, rc = -ENOMEM);
/* initialize foreign symlink prefix path */
OBD_ALLOC(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
if (sbi->ll_foreign_symlink_prefix == NULL)
GOTO(out_destroy_ra, rc = -ENOMEM);
memcpy(sbi->ll_foreign_symlink_prefix, "/mnt/", sizeof("/mnt/"));
sbi->ll_foreign_symlink_prefix_size = sizeof("/mnt/");
/* initialize foreign symlink upcall path, none by default */
OBD_ALLOC(sbi->ll_foreign_symlink_upcall, sizeof("none"));
if (sbi->ll_foreign_symlink_upcall == NULL)
GOTO(out_destroy_ra, rc = -ENOMEM);
memcpy(sbi->ll_foreign_symlink_upcall, "none", sizeof("none"));
sbi->ll_foreign_symlink_upcall_items = NULL;
sbi->ll_foreign_symlink_upcall_nb_items = 0;
init_rwsem(&sbi->ll_foreign_symlink_sem);
/* foreign symlink support (LL_SBI_FOREIGN_SYMLINK in ll_flags)
* not enabled by default
*/
sbi->ll_secctx_name = NULL;
sbi->ll_secctx_name_size = 0;
sbi->ll_ra_info.ra_max_pages =
min(pages / 32, SBI_DEFAULT_READ_AHEAD_MAX);
/* on very small nodes (ie, testing VMs), we need a minimum readahead
* size to get sane testing behavior, so we try to enforce this
* minimum. This only kicks in at small RAM sizes, so generally won't
* affect real clients
*/
if (sbi->ll_ra_info.ra_max_pages < SBI_DEFAULT_READ_AHEAD_MIN)
sbi->ll_ra_info.ra_max_pages =
min(pages / 2, SBI_DEFAULT_READ_AHEAD_MIN);
sbi->ll_ra_info.ra_max_pages_per_file =
min(sbi->ll_ra_info.ra_max_pages / 4,
SBI_DEFAULT_READ_AHEAD_PER_FILE_MAX);
sbi->ll_ra_info.ra_async_pages_per_file_threshold =
sbi->ll_ra_info.ra_max_pages_per_file;
sbi->ll_ra_info.ra_range_pages = SBI_DEFAULT_RA_RANGE_PAGES;
sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
atomic_set(&sbi->ll_ra_info.ra_async_inflight, 0);
set_bit(LL_SBI_VERBOSE, sbi->ll_flags);
#ifdef CONFIG_ENABLE_CHECKSUM
set_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
#endif
#ifdef CONFIG_ENABLE_FLOCK
set_bit(LL_SBI_FLOCK, sbi->ll_flags);
#endif
#ifdef HAVE_LRU_RESIZE_SUPPORT
set_bit(LL_SBI_LRU_RESIZE, sbi->ll_flags);
#endif
set_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
/* metadata statahead is enabled by default */
sbi->ll_enable_statahead_fname = 1;
sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
sbi->ll_sa_batch_max = LL_SA_BATCH_DEF;
sbi->ll_sa_max = LL_SA_REQ_MAX_DEF;
sbi->ll_sa_min = LL_SA_REQ_MIN_DEF;
sbi->ll_sa_timeout = LL_SA_TIMEOUT_DEF;
sbi->ll_sa_fname_predict_hit = LSA_FN_PREDICT_HIT_DEF;
sbi->ll_sa_fname_match_hit = LSA_FN_MATCH_HIT_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_sa_refcnt, 0);
atomic_set(&sbi->ll_agl_total, 0);
atomic_set(&sbi->ll_sa_hit_total, 0);
atomic_set(&sbi->ll_sa_miss_total, 0);
atomic_set(&sbi->ll_sa_list_total, 0);
atomic_set(&sbi->ll_sa_fname_total, 0);
set_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
set_bit(LL_SBI_FAST_READ, sbi->ll_flags);
set_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
set_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
set_bit(LL_SBI_UNALIGNED_DIO, sbi->ll_flags);
set_bit(LL_SBI_STATFS_PROJECT, sbi->ll_flags);
set_bit(LL_SBI_HYBRID_IO, sbi->ll_flags);
ll_sbi_set_encrypt(sbi, true);
ll_sbi_set_name_encrypt(sbi, true);
/* root squash */
sbi->ll_squash.rsi_uid = 0;
sbi->ll_squash.rsi_gid = 0;
INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
spin_lock_init(&sbi->ll_squash.rsi_lock);
/* Per-filesystem file heat */
sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
/* Per-fs open heat level before requesting open lock */
sbi->ll_oc_thrsh_count = SBI_DEFAULT_OPENCACHE_THRESHOLD_COUNT;
sbi->ll_oc_max_ms = SBI_DEFAULT_OPENCACHE_THRESHOLD_MAX_MS;
sbi->ll_oc_thrsh_ms = SBI_DEFAULT_OPENCACHE_THRESHOLD_MS;
sbi->ll_hybrid_io_write_threshold_bytes =
SBI_DEFAULT_HYBRID_IO_WRITE_THRESHOLD;
sbi->ll_hybrid_io_read_threshold_bytes =
SBI_DEFAULT_HYBRID_IO_READ_THRESHOLD;
/* setstripe is allowed for all groups by default */
sbi->ll_enable_setstripe_gid = MDT_INVALID_GID;
/* erasure coding is disabled by default */
sbi->ll_enable_erasure_coding = 0;
INIT_LIST_HEAD(&sbi->ll_all_quota_list);
rc = rhashtable_init(&sbi->ll_proj_sfs_htable, &proj_sfs_cache_params);
LASSERT(rc == 0);
RETURN(sbi);
out_destroy_ra:
OBD_FREE(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
if (sbi->ll_cache) {
cl_cache_decref(sbi->ll_cache);
sbi->ll_cache = NULL;
}
destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
out_pcc:
pcc_super_fini(&sbi->ll_pcc_super);
out_sbi:
OBD_FREE_PTR(sbi);
RETURN(ERR_PTR(rc));
}
static void proj_sfs_free(void *psa, void *arg)
{
struct proj_sfs_cache *ps = psa;
OBD_FREE_PTR(ps);
}
static void ll_free_sbi(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
ENTRY;
if (sbi != NULL) {
rhashtable_free_and_destroy(&sbi->ll_proj_sfs_htable,
proj_sfs_free, NULL);
if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
if (sbi->ll_ra_info.ll_readahead_wq)
destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
if (sbi->ll_cache != NULL) {
cl_cache_decref(sbi->ll_cache);
sbi->ll_cache = NULL;
}
if (sbi->ll_foreign_symlink_prefix) {
OBD_FREE(sbi->ll_foreign_symlink_prefix,
sbi->ll_foreign_symlink_prefix_size);
sbi->ll_foreign_symlink_prefix = NULL;
}
if (sbi->ll_foreign_symlink_upcall) {
OBD_FREE(sbi->ll_foreign_symlink_upcall,
strlen(sbi->ll_foreign_symlink_upcall) +
1);
sbi->ll_foreign_symlink_upcall = NULL;
}
if (sbi->ll_foreign_symlink_upcall_items) {
int i;
int nb_items = sbi->ll_foreign_symlink_upcall_nb_items;
struct ll_foreign_symlink_upcall_item *items =
sbi->ll_foreign_symlink_upcall_items;
for (i = 0 ; i < nb_items; i++)
if (items[i].type == STRING_TYPE)
OBD_FREE(items[i].string,
items[i].size);
OBD_FREE_LARGE(items, nb_items *
sizeof(struct ll_foreign_symlink_upcall_item));
sbi->ll_foreign_symlink_upcall_items = NULL;
}
if (sbi->ll_secctx_name)
ll_secctx_name_free(sbi);
kfree(sbi->ll_user_principal);
ll_free_rw_stats_info(sbi);
pcc_super_fini(&sbi->ll_pcc_super);
OBD_FREE(sbi, sizeof(*sbi));
}
EXIT;
}
static void ll_force_readonly(struct super_block *sb, struct obd_export *exp,
char *reason)
{
cfs_tty_write_msg("Forcing read-only mount.\n\r");
CERROR("%s: mount failed due to %s, forcing read-only mount: rc = %d\n",
exp->exp_obd->obd_name, reason, -EROFS);
sb->s_flags |= SB_RDONLY;
obd_disconnect(exp);
}
static int ll_upcall_notify_gssiam(struct obd_device *watched,
struct super_block *sb)
{
struct client_obd *cli = &watched->u.cli;
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct lustre_mount_data *lmd = sbi->lsi->lsi_lmd;
struct lustre_gssiam_mount_info *gssiam = NULL;
const char *fs_subdir = lmd->lmd_fileset ?
lmd->lmd_fileset : "/";
int subdir_sz = strlen(fs_subdir) + 1;
int principal_sz = sbi->ll_user_principal ?
strlen(sbi->ll_user_principal) + 1 : 0;
int rc = 0;
if (cli->cl_import->imp_sec->ps_gssiam)
return 0;
OBD_ALLOC_PTR(gssiam);
if (!gssiam)
RETURN(-ENOMEM);
gssiam->lgmi_loginuid = sbi->ll_loginuid;
OBD_ALLOC(gssiam->lgmi_subdir, subdir_sz);
if (!gssiam->lgmi_subdir)
GOTO(out_gssiam, rc = -ENOMEM);
strscpy(gssiam->lgmi_subdir, fs_subdir, subdir_sz);
if (principal_sz > 0) {
OBD_ALLOC(gssiam->lgmi_principal, principal_sz);
if (!gssiam->lgmi_principal)
GOTO(out_subdir, rc = -ENOMEM);
strscpy(gssiam->lgmi_principal, sbi->ll_user_principal,
principal_sz);
}
if (test_bit(LMD_FLG_DEV_RDONLY, lmd->lmd_flags) ||
sb->s_flags & SB_RDONLY)
gssiam->lgmi_options |= OBD_CONNECT_RDONLY;
CDEBUG(D_SUPER, "copy IAM subdir:%s options:%u login:%u principal:%s\n",
gssiam->lgmi_subdir, gssiam->lgmi_options, gssiam->lgmi_loginuid,
gssiam->lgmi_principal ? gssiam->lgmi_principal : "");
cli->cl_import->imp_sec->ps_gssiam = gssiam;
out_subdir:
if (rc)
OBD_FREE(gssiam->lgmi_subdir, subdir_sz);
out_gssiam:
if (rc)
OBD_FREE_PTR(gssiam);
return rc;
}
static int
ll_upcall_notify(struct obd_device *host, struct obd_device *watched,
enum obd_notify_event ev, void *owner)
{
struct super_block *sb = owner;
struct ll_sb_info *sbi;
int result = 0;
ENTRY;
if (!sb || !s2lsi(sb))
RETURN(-EINVAL);
sbi = ll_s2sbi(sb);
if (!sbi)
RETURN(-EINVAL);
if ((strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) != 0 &&
strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME) != 0)) {
result = -EINVAL;
CWARN("%s: unexpected notification from %s %s: rc = %d\n",
host->obd_name, watched->obd_type->typ_name,
watched->obd_name, result);
RETURN(result);
}
if (ev == OBD_NOTIFY_GSSIAM)
RETURN(ll_upcall_notify_gssiam(watched, sb));
if (ev == OBD_NOTIFY_ACTIVE &&
strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) == 0)
result = cl_ocd_update(host, watched, ev, &sbi->ll_lco);
RETURN(result);
}
static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
{
struct inode *root = NULL;
struct ll_sb_info *sbi = ll_s2sbi(sb);
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;
u64 valid;
int size, err, checksum;
bool api32;
void *encctx;
int encctxlen;
ENTRY;
sbi->ll_md_obd = class_name2obd(md);
if (!sbi->ll_md_obd) {
CERROR("%s: not setup or attached: rc = %d\n", md, -EINVAL);
RETURN(-EINVAL);
}
OBD_ALLOC_PTR(data);
if (data == NULL)
RETURN(-ENOMEM);
OBD_ALLOC_PTR(osfs);
if (osfs == NULL) {
OBD_FREE_PTR(data);
RETURN(-ENOMEM);
}
/* 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;
/* indicate MDT features supported by this client */
data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_SRVLOCK |
OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
OBD_CONNECT_64BITHASH |
OBD_CONNECT_EINPROGRESS |
OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
OBD_CONNECT_MAX_EASIZE |
OBD_CONNECT_FLOCK_DEAD |
OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
OBD_CONNECT_OPEN_BY_FID |
OBD_CONNECT_DIR_STRIPE |
OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
OBD_CONNECT_SUBTREE |
OBD_CONNECT_MULTIMODRPCS |
OBD_CONNECT_GRANT_PARAM |
OBD_CONNECT_GRANT_SHRINK |
OBD_CONNECT_SHORTIO |
OBD_CONNECT_FLAGS2 |
OBD_CONNECT_HPREQ_CHECK1;
data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
OBD_CONNECT2_SUM_STATFS |
OBD_CONNECT2_OVERSTRIPING |
OBD_CONNECT2_FLR |
OBD_CONNECT2_LOCK_CONVERT |
OBD_CONNECT2_ARCHIVE_ID_ARRAY |
OBD_CONNECT2_INC_XID |
OBD_CONNECT2_LSOM |
OBD_CONNECT2_ASYNC_DISCARD |
OBD_CONNECT2_PCC |
OBD_CONNECT2_CRUSH | OBD_CONNECT2_LSEEK |
OBD_CONNECT2_GETATTR_PFID |
OBD_CONNECT2_DOM_LVB |
OBD_CONNECT2_REP_MBITS |
OBD_CONNECT2_ATOMIC_OPEN_LOCK |
OBD_CONNECT2_BATCH_RPC |
OBD_CONNECT2_DMV_IMP_INHERIT |
OBD_CONNECT2_UNALIGNED_DIO |
OBD_CONNECT2_PCCRO |
OBD_CONNECT2_MIRROR_ID_FIX |
OBD_CONNECT2_READDIR_OPEN;
if (llite_enable_flr_ec)
data->ocd_connect_flags2 |= OBD_CONNECT2_FLR_EC;
#ifdef HAVE_LRU_RESIZE_SUPPORT
if (test_bit(LL_SBI_LRU_RESIZE, sbi->ll_flags))
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
#endif
data->ocd_connect_flags |= OBD_CONNECT_ACL_FLAGS;
data->ocd_cksum_types = obd_cksum_types_supported_client();
if (CFS_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
/* flag mdc connection as lightweight, only used for test
* purpose, use with care
*/
data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
data->ocd_ibits_known = MDS_INODELOCK_FULL;
data->ocd_version = LUSTRE_VERSION_CODE;
if (test_bit(LL_SBI_USER_XATTR, sbi->ll_flags))
data->ocd_connect_flags |= OBD_CONNECT_XATTR;
sb->s_flags |= SB_I_VERSION | SB_NOSEC;
sbi->ll_fop = ll_select_file_operations(sbi, true);
/* always ping even if server suppress_pings */
if (test_bit(LL_SBI_ALWAYS_PING, sbi->ll_flags))
data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
/* Cache the login UID of the mount process. This is specifically
* needed for GSSIAM authentication (passed down via upcalls).
* It cannot be dynamically retrieved inside ll_upcall_notify_gssiam()
* because when the security context is re-established asynchronously
* during server failover or reconnect recovery, the upcall
* notification runs in the context of background ptlrpcd kernel
* threads where the active login UID cannot be resolved (resulting
* in -1). Caching it here ensures the original mount-time login UID
* is preserved for recovery.
*/
sbi->ll_loginuid = from_kuid(&init_user_ns,
audit_get_loginuid(current));
obd_connect_set_secctx(data);
if (ll_sbi_has_encrypt(sbi)) {
obd_connect_set_enc_fid2path(data);
obd_connect_set_name_enc(data);
obd_connect_set_enc(data);
}
#if defined(CONFIG_SECURITY)
data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
#endif
data->ocd_brw_size = MD_MAX_BRW_SIZE;
retry_connect:
if (sb->s_flags & SB_RDONLY)
data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
sbi->ll_md_obd->obd_upcall.onu_owner = sb;
sbi->ll_md_obd->obd_upcall.onu_upcall = ll_upcall_notify;
err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
&sbi->ll_sb_uuid, data, sbi->ll_cache);
if (err == -EBUSY) {
LCONSOLE_ERROR("An MDT (md %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n",
md);
GOTO(out, err);
} else if (err) {
CERROR("cannot connect to %s: rc = %d\n", md, err);
GOTO(out, err);
}
sbi->ll_md_exp->exp_connect_data = *data;
/* For mount, we only need fs info from MDT0, and also in DNE, it
* can make sure the client can be mounted as long as MDT0 is avaible
*/
err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
ktime_get_seconds() - sbi->ll_statfs_max_age,
OBD_STATFS_FOR_MDT0);
if (err == -EROFS && !(sb->s_flags & SB_RDONLY)) {
/* We got -EROFS from the server, maybe it is imposing
* read-only mount. So just retry like this.
*/
ll_force_readonly(sb, sbi->ll_md_exp, "read-only MDT");
GOTO(retry_connect, err);
} else if (err) {
GOTO(out_md, err);
}
fid_zero(&sbi->ll_root_fid);
/* get root fid */
err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
&sbi->ll_root_fid);
if (err == -EROFS && !(sb->s_flags & SB_RDONLY)) {
/* -EROFS is returned from the server, this means a fileset
* is imposing a read-only mount.
* Disconnect and retry connection as read-only.
*/
ll_force_readonly(sb, sbi->ll_md_exp, "read-only fileset");
GOTO(retry_connect, err);
}
if (err) {
CERROR("%s: cannot mds_connect: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
GOTO(out_md, err);
}
if (!fid_is_sane(&sbi->ll_root_fid)) {
CERROR("%s: invalid root fid " DFID " during mount: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name,
PFID(&sbi->ll_root_fid), err);
GOTO(out_md, err = -EINVAL);
}
CDEBUG(D_SUPER, "rootfid " DFID "\n", PFID(&sbi->ll_root_fid));
/* This needs to be after statfs to ensure connect has finished.
* Note that "data" does NOT contain the valid connect reply.
* If connecting to a 1.8 server there will be no LMV device, so
* we can access the MDC export directly and exp_connect_flags will
* be non-zero, but if accessing an upgraded 2.1 server it will
* have the correct flags filled in.
* XXX: fill in the LMV exp_connect_flags from MDC(s).
*/
valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
valid != CLIENT_CONNECT_MDT_REQD) {
char *buf;
OBD_ALLOC_WAIT(buf, PAGE_SIZE);
obd_connect_flags2str(buf, PAGE_SIZE,
valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
LCONSOLE_ERROR("Server %s does not support feature(s) needed for correct operation of this client (%s). Please upgrade server or downgrade client.\n",
sbi->ll_md_exp->exp_obd->obd_name, buf);
OBD_FREE(buf, PAGE_SIZE);
GOTO(out_md, err = -EPROTO);
}
size = sizeof(*data);
err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
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);
GOTO(out_md, err);
}
LASSERT(osfs->os_bsize);
sb->s_blocksize = osfs->os_bsize;
sb->s_blocksize_bits = log2(osfs->os_bsize);
sb->s_magic = LL_SUPER_MAGIC;
sb->s_maxbytes = MAX_LFS_FILESIZE;
sbi->ll_inode_cache_enabled = 1;
sbi->ll_dir_open_read = 0;
sbi->ll_namelen = min_t(u32, osfs->os_namelen, NAME_MAX);
sbi->ll_mnt.mnt = current->fs->root.mnt;
sbi->ll_mnt_ns = current->nsproxy->mnt_ns;
if (test_bit(LL_SBI_USER_XATTR, sbi->ll_flags) &&
!(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
LCONSOLE_INFO("Disabling user_xattr feature because it is not supported on the server\n");
clear_bit(LL_SBI_USER_XATTR, sbi->ll_flags);
}
if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
sb->s_flags |= SB_POSIXACL;
set_bit(LL_SBI_ACL, sbi->ll_flags);
} else {
LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
sb->s_flags &= ~SB_POSIXACL;
clear_bit(LL_SBI_ACL, sbi->ll_flags);
}
if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
set_bit(LL_SBI_64BIT_HASH, sbi->ll_flags);
if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
set_bit(LL_SBI_LAYOUT_LOCK, sbi->ll_flags);
if (obd_connect_has_secctx(data))
set_bit(LL_SBI_FILE_SECCTX, sbi->ll_flags);
if (ll_sbi_has_encrypt(sbi) && !obd_connect_has_enc(data)) {
if (ll_sb_has_test_dummy_encryption(sb))
LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
sbi->ll_fsname,
sbi->ll_md_exp->exp_obd->obd_name);
ll_sbi_set_encrypt(sbi, false);
}
if (ll_sbi_has_name_encrypt(sbi) && !obd_connect_has_name_enc(data)) {
struct lustre_sb_info *lsi = s2lsi(sb);
if (ll_sb_has_test_dummy_encryption(sb))
LCONSOLE_WARN("%s: server %s does not support name encryption, not using it.\n",
sbi->ll_fsname,
sbi->ll_md_exp->exp_obd->obd_name);
#ifdef CONFIG_LL_ENCRYPTION
lsi->lsi_flags &= ~LSI_FILENAME_ENC;
#endif
lsi->lsi_flags &= ~LSI_FILENAME_ENC_B64_OLD_CLI;
ll_sbi_set_name_encrypt(sbi, false);
}
if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
LCONSOLE_INFO("%s: disabling xattr cache due to unknown maximum xattr size.\n",
dt);
} else if (!sbi->ll_xattr_cache_set) {
/* If xattr_cache is already set (no matter 0 or 1)
* during processing llog, it won't be enabled here.
*/
set_bit(LL_SBI_XATTR_CACHE, sbi->ll_flags);
sbi->ll_xattr_cache_enabled = 1;
}
}
sbi->ll_dt_obd = class_name2obd(dt);
if (!sbi->ll_dt_obd) {
CERROR("DT %s: not setup or attached\n", dt);
GOTO(out_md, 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;
/* indicate OST features supported by this client */
data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_SRVLOCK |
OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
OBD_CONNECT_EINPROGRESS |
OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
OBD_CONNECT_LAYOUTLOCK |
OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
OBD_CONNECT_FLAGS2 |
OBD_CONNECT_GRANT_SHRINK |
OBD_CONNECT_HPREQ_CHECK1;
data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
OBD_CONNECT2_INC_XID | OBD_CONNECT2_LSEEK |
OBD_CONNECT2_REP_MBITS |
OBD_CONNECT2_UNALIGNED_DIO;
if (!CFS_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
/* OBD_CONNECT_CKSUM should always be set, even if checksums are
* disabled by default, because it can still be enabled on the
* fly via /sys. As a consequence, we still need to come to an
* agreement on the supported algorithms at connect time
*/
data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
if (CFS_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
data->ocd_cksum_types = OBD_CKSUM_ADLER;
else
data->ocd_cksum_types = obd_cksum_types_supported_client();
#ifdef HAVE_LRU_RESIZE_SUPPORT
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
#endif
/* always ping even if server suppress_pings */
if (test_bit(LL_SBI_ALWAYS_PING, sbi->ll_flags))
data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
if (ll_sbi_has_encrypt(sbi))
obd_connect_set_enc(data);
CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d\n",
data->ocd_connect_flags,
data->ocd_version, data->ocd_grant);
sbi->ll_dt_obd->obd_upcall.onu_owner = sb;
sbi->ll_dt_obd->obd_upcall.onu_upcall = ll_upcall_notify;
data->ocd_brw_size = DT_MAX_BRW_SIZE;
err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
&sbi->ll_sb_uuid, data, sbi->ll_cache);
if (err == -EBUSY) {
LCONSOLE_ERROR("An OST (dt %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n",
dt);
GOTO(out_md, err);
} else if (err) {
CERROR("%s: Cannot connect to %s: rc = %d\n",
sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
GOTO(out_md, err);
}
if (ll_sbi_has_encrypt(sbi) &&
!obd_connect_has_enc(&sbi->ll_dt_obd->u.lov.lov_ocd)) {
if (ll_sb_has_test_dummy_encryption(sb))
LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
sbi->ll_fsname, dt);
ll_sbi_set_encrypt(sbi, false);
} else if (ll_sb_has_test_dummy_encryption(sb)) {
LCONSOLE_WARN("Test dummy encryption mode enabled\n");
}
/* If unaligned DIO is not supported, hybrid IO will result in EINVAL,
* so turn hybrid IO off by default. If the user turns it back on, they
* will get EINVAL, but should be able to figure out the cause.
*/
if (test_bit(LL_SBI_HYBRID_IO, sbi->ll_flags) &&
!obd_connect_has_unaligned_dio(&sbi->ll_dt_obd->u.lov.lov_ocd))
clear_bit(LL_SBI_HYBRID_IO, sbi->ll_flags);
sbi->ll_dt_exp->exp_connect_data = *data;
mutex_lock(&sbi->ll_lco.lco_lock);
sbi->ll_lco.lco_flags = data->ocd_connect_flags;
sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
mutex_unlock(&sbi->ll_lco.lco_lock);
sb->s_op = &lustre_super_operations;
sb->s_xattr = ll_xattr_handlers;
#if THREAD_SIZE >= 8192 /*b=17630*/
sb->s_export_op = &lustre_export_operations;
#endif
#ifdef HAVE_LUSTRE_CRYPTO
llcrypt_set_ops(sb, &lustre_cryptops);
#endif
/* make root inode (XXX: move this to after cbd setup?) */
valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE |
OBD_MD_ENCCTX;
if (test_bit(LL_SBI_ACL, sbi->ll_flags))
valid |= OBD_MD_FLACL;
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
GOTO(out_lock_cn_cb, err = -ENOMEM);
op_data->op_fid1 = sbi->ll_root_fid;
op_data->op_mode = 0;
op_data->op_valid = valid;
err = md_getattr(sbi->ll_md_exp, op_data, &request);
/* Need enc ctx info, reset in op_data to prevent it being freed. */
encctx = op_data->op_file_encctx;
encctxlen = op_data->op_file_encctx_size;
op_data->op_file_encctx = NULL;
op_data->op_file_encctx_size = 0;
OBD_FREE_PTR(op_data);
if (err) {
CERROR("%s: md_getattr failed for root: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
GOTO(out_lock_cn_cb, err);
}
err = md_get_lustre_md(sbi->ll_md_exp, &request->rq_pill,
sbi->ll_dt_exp, sbi->ll_md_exp, &lmd);
if (err) {
CERROR("failed to understand root inode md: rc = %d\n", err);
ptlrpc_req_put(request);
GOTO(out_lock_cn_cb, err);
}
LASSERT(fid_is_sane(&sbi->ll_root_fid));
err = cl_sb_init(sb);
if (err) {
CERROR("%s: failed to initialize cl: rc = %d\n", sbi->ll_fsname,
err);
ptlrpc_req_put(request);
GOTO(out_lock_cn_cb, err);
}
api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, api32), &lmd);
md_put_lustre_md(sbi->ll_md_exp, &lmd);
if (IS_ERR(root)) {
lmd_clear_acl(&lmd);
err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
root = NULL;
CERROR("%s: bad ll_iget() for root: rc = %d\n",
sbi->ll_fsname, err);
ptlrpc_req_put(request);
GOTO(out_root, err);
}
err = ll_secctx_name_store(root);
if (err < 0 && ll_security_xattr_wanted(root))
CWARN("%s: file security contextes not supported: rc = %d\n",
sbi->ll_fsname, err);
err = 0;
if (encctxlen) {
CDEBUG(D_SEC,
"server returned encryption ctx for root inode "DFID"\n",
PFID(&sbi->ll_root_fid));
err = ll_set_encflags(root, encctx, encctxlen, true);
if (err)
CWARN("%s: cannot set enc ctx for "DFID": rc = %d\n",
sbi->ll_fsname,
PFID(&sbi->ll_root_fid), err);
}
ptlrpc_req_put(request);
checksum = test_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
if (sbi->ll_checksum_set) {
err = obd_set_info_async(NULL, sbi->ll_dt_exp,
sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
sizeof(checksum), &checksum, NULL);
if (err) {
CERROR("%s: Set checksum failed: rc = %d\n",
sbi->ll_dt_exp->exp_obd->obd_name, err);
GOTO(out_root, err);
}
}
sb->s_root = d_make_root(root);
if (sb->s_root == NULL) {
err = -ENOMEM;
CERROR("%s: can't make root dentry: rc = %d\n",
sbi->ll_fsname, err);
GOTO(out_root, err);
}
sbi->ll_sdev_orig = sb->s_dev;
/* We set sb->s_dev equal on all lustre clients in order to support
* NFS export clustering. NFSD requires that the FSID be the same
* on all clients.
*
* s_dev is also used in lt_compare() to compare two fs, but that is
* only a node-local comparison.
*/
uuid = obd_get_uuid(sbi->ll_md_exp);
if (uuid != NULL)
sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
OBD_FREE_PTR(data);
OBD_FREE_PTR(osfs);
/* Don't change value if it was specified in the config log */
if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
u32 max_pages_per_rpc_read = 0;
size = sizeof(max_pages_per_rpc_read);
err = obd_get_info(NULL, sbi->ll_dt_exp,
sizeof(KEY_MAX_PAGES_PER_RPC_READ),
KEY_MAX_PAGES_PER_RPC_READ, &size,
&max_pages_per_rpc_read);
if (err)
max_pages_per_rpc_read = 0;
sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
max_t(u32, SBI_DEFAULT_READ_AHEAD_WHOLE_MAX,
max_pages_per_rpc_read);
if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
sbi->ll_ra_info.ra_max_pages_per_file)
sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
sbi->ll_ra_info.ra_max_pages_per_file;
}
if (sbi->ll_dt_obd) {
err = sysfs_create_link(&sbi->ll_kset.kobj,
&sbi->ll_dt_obd->obd_kset.kobj,
sbi->ll_dt_obd->obd_type->typ_name);
if (err < 0) {
CERROR("%s: could not register %s in llite: rc = %d\n",
dt, sbi->ll_fsname, err);
err = 0;
}
}
if (sbi->ll_md_obd) {
err = sysfs_create_link(&sbi->ll_kset.kobj,
&sbi->ll_md_obd->obd_kset.kobj,
sbi->ll_md_obd->obd_type->typ_name);
if (err < 0) {
CERROR("%s: could not register %s in llite: rc = %d\n",
md, sbi->ll_fsname, err);
err = 0;
}
}
RETURN(err);
out_root:
iput(root);
cl_sb_fini(sb);
out_lock_cn_cb:
obd_disconnect(sbi->ll_dt_exp);
if (sbi->ll_dt_obd) {
sbi->ll_dt_obd->obd_upcall.onu_owner = NULL;
sbi->ll_dt_obd->obd_upcall.onu_upcall = NULL;
}
sbi->ll_dt_exp = NULL;
sbi->ll_dt_obd = NULL;
out_md:
obd_disconnect(sbi->ll_md_exp);
if (sbi->ll_md_obd) {
sbi->ll_md_obd->obd_upcall.onu_owner = NULL;
sbi->ll_md_obd->obd_upcall.onu_upcall = NULL;
}
sbi->ll_md_exp = NULL;
sbi->ll_md_obd = NULL;
out:
OBD_FREE_PTR(data);
OBD_FREE_PTR(osfs);
return err;
}
int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
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);
}
CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
KEY_MAX_EASIZE, &size, lmmsize);
if (rc)
CERROR("Get max mdsize error rc %d\n", rc);
CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
RETURN(rc);
}
/**
* ll_get_default_mdsize() - Get the value of the default_easize parameter.
* see client_obd::cl_default_mds_easize
* @sbi: superblock info for this filesystem
* @lmmsize: pointer to storage location for value
*
* Return:
* * %0 on success
* * %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);
if (rc)
CERROR("Get default mdsize error rc %d\n", rc);
RETURN(rc);
}
/**
* ll_set_default_mdsize() - Set the default_easize parameter to the given
* value. see client_obd::cl_default_mds_easize
* @sbi: superblock info for this filesystem
* @lmmsize: the size to set
*
* Return:
* * %0 on success
* * %negative negated errno on failure
*/
int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
{
int rc;
if (lmmsize < sizeof(struct lov_mds_md) ||
lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
return -EINVAL;
rc = obd_set_info_async(NULL, sbi->ll_md_exp,
sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
sizeof(int), &lmmsize, NULL);
RETURN(rc);
}
static void client_common_put_super(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
ENTRY;
ll_debugfs_unregister_super(sb);
cl_sb_fini(sb);
if (sbi->ll_dt_obd) {
sbi->ll_dt_obd->obd_upcall.onu_owner = NULL;
sbi->ll_dt_obd->obd_upcall.onu_upcall = NULL;
}
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
if (sbi->ll_md_obd) {
sbi->ll_md_obd->obd_upcall.onu_owner = NULL;
sbi->ll_md_obd->obd_upcall.onu_upcall = NULL;
}
obd_disconnect(sbi->ll_md_exp);
sbi->ll_md_exp = NULL;
EXIT;
}
void ll_kill_super(struct super_block *sb)
{
struct ll_sb_info *sbi;
ENTRY;
/* not init sb ?*/
if (!(sb->s_flags & SB_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
*/
if (sbi) {
sb->s_dev = sbi->ll_sdev_orig;
/* wait running statahead threads to quit */
while (atomic_read(&sbi->ll_sa_running) > 0 ||
atomic_read(&sbi->ll_sa_refcnt) > 0)
schedule_timeout_uninterruptible(
cfs_time_seconds(1) >> 3);
}
EXIT;
}
/* Since we use this table for ll_sbi_flags_seq_show make
* sure what you want displayed for a specific token that
* is listed more than once below be listed first. For
* example we want "checksum" displayed, not "nochecksum"
* for the sbi_flags.
*/
static const match_table_t ll_sbi_flags_name = {
{LL_SBI_32BIT_API, "32bitapi"},
{LL_SBI_LOCALFLOCK, "localflock"},
{LL_SBI_FLOCK, "flock"},
{LL_SBI_FLOCK, "noflock"},
{LL_SBI_CHECKSUM, "checksum"},
{LL_SBI_CHECKSUM, "nochecksum"},
{LL_SBI_ENCRYPT, "encrypt"},
{LL_SBI_ENCRYPT, "noencrypt"},
{LL_SBI_FOREIGN_SYMLINK, "foreign_symlink=%s"},
{LL_SBI_LAZYSTATFS, "lazystatfs"},
{LL_SBI_LAZYSTATFS, "nolazystatfs"},
{LL_SBI_LRU_RESIZE, "lruresize"},
{LL_SBI_LRU_RESIZE, "nolruresize"},
{LL_SBI_NOLCK, "nolock"},
{LL_SBI_STATFS_PROJECT, "statfs_project"},
{LL_SBI_STATFS_PROJECT, "nostatfs_project"},
{LL_SBI_SYNC_ON_CLOSE, "sync_on_close"},
{LL_SBI_SYNC_ON_CLOSE, "nosync_on_close"},
{LL_SBI_TEST_DUMMY_ENCRYPTION, "test_dummy_encryption=%s"},
{LL_SBI_TEST_DUMMY_ENCRYPTION, "test_dummy_encryption"},
{LL_SBI_USER_FID2PATH, "user_fid2path"},
{LL_SBI_USER_FID2PATH, "nouser_fid2path"},
{LL_SBI_USER_PRINCIPAL, "user_principal=%s"},
{LL_SBI_USER_XATTR, "user_xattr"},
{LL_SBI_USER_XATTR, "nouser_xattr"},
{LL_SBI_VERBOSE, "verbose"},
{LL_SBI_VERBOSE, "noverbose"},
{LL_SBI_ALWAYS_PING, "always_ping"},
{LL_SBI_NUM_MOUNT_OPT, NULL},
{LL_SBI_64BIT_HASH, "64bit_hash"},
{LL_SBI_ACL, "acl"},
{LL_SBI_AGL_ENABLED, "agl"},
{LL_SBI_ENCRYPT_NAME, "name_encrypt"},
{LL_SBI_FAST_READ, "fast_read"},
{LL_SBI_FILE_HEAT, "file_heat"},
{LL_SBI_FILE_SECCTX, "file_secctx"},
{LL_SBI_HYBRID_IO, "hybrid_io"},
{LL_SBI_LAYOUT_LOCK, "layout"},
{LL_SBI_NOROOTSQUASH, "norootsquash"},
{LL_SBI_PARALLEL_DIO, "parallel_dio"},
{LL_SBI_TINY_WRITE, "tiny_write"},
{LL_SBI_UNALIGNED_DIO, "unaligned_dio"},
{LL_SBI_XATTR_CACHE, "xattr_cache"},
};
int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
{
struct super_block *sb = m->private;
int i;
for (i = 0; i < LL_SBI_NUM_FLAGS; i++) {
int j;
if (!test_bit(i, ll_s2sbi(sb)->ll_flags))
continue;
for (j = 0; j < ARRAY_SIZE(ll_sbi_flags_name); j++) {
if (ll_sbi_flags_name[j].token == i &&
ll_sbi_flags_name[j].pattern) {
seq_printf(m, "%s ",
ll_sbi_flags_name[j].pattern);
break;
}
}
}
seq_puts(m, "\b\n");
return 0;
}
/* non-client-specific mount options are parsed in lmd_parse */
static int ll_options(char *options, struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
char *s1, *opts, *orig_opts;
int err = 0;
ENTRY;
if (!options)
RETURN(0);
/* Don't stomp on lmd_opts */
orig_opts = opts = kstrdup(options, GFP_KERNEL);
if (!opts)
RETURN(-ENOMEM);
s1 = opts;
CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
while ((s1 = strsep(&opts, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
bool turn_off = false;
int token;
if (!*s1)
continue;
CDEBUG(D_SUPER, "next opt=%s\n", s1);
if (strncmp(s1, "no", 2) == 0)
turn_off = true;
/*
* Initialize args struct so we know whether arg was
* found; some options take optional arguments.
*/
args[0].to = NULL;
args[0].from = NULL;
token = match_token(s1, ll_sbi_flags_name, args);
if (token == LL_SBI_NUM_MOUNT_OPT) {
if (match_wildcard("context", s1) ||
match_wildcard("fscontext", s1) ||
match_wildcard("defcontext", s1) ||
match_wildcard("rootcontext", s1))
continue;
if (match_wildcard("skid=*", s1)) {
sbi->ll_skid = simple_strtoul(s1 + 5, NULL, 10);
continue;
}
LCONSOLE_ERROR("Unknown option '%s', won't mount.\n",
s1);
RETURN(-EINVAL);
}
switch (token) {
case LL_SBI_32BIT_API:
case LL_SBI_64BIT_HASH:
case LL_SBI_ALWAYS_PING:
case LL_SBI_NOLCK:
set_bit(token, sbi->ll_flags);
break;
case LL_SBI_FLOCK:
clear_bit(LL_SBI_LOCALFLOCK, sbi->ll_flags);
if (turn_off)
clear_bit(LL_SBI_FLOCK, sbi->ll_flags);
else
set_bit(token, sbi->ll_flags);
break;
case LL_SBI_LOCALFLOCK:
clear_bit(LL_SBI_FLOCK, sbi->ll_flags);
set_bit(token, sbi->ll_flags);
break;
case LL_SBI_CHECKSUM:
sbi->ll_checksum_set = 1;
fallthrough;
case LL_SBI_LRU_RESIZE:
case LL_SBI_LAZYSTATFS:
case LL_SBI_STATFS_PROJECT:
case LL_SBI_SYNC_ON_CLOSE:
case LL_SBI_USER_XATTR:
case LL_SBI_USER_FID2PATH:
case LL_SBI_VERBOSE:
if (turn_off)
clear_bit(token, sbi->ll_flags);
else
set_bit(token, sbi->ll_flags);
break;
case LL_SBI_TEST_DUMMY_ENCRYPTION: {
#ifdef HAVE_LUSTRE_CRYPTO
#ifdef HAVE_FSCRYPT_DUMMY_CONTEXT_ENABLED
set_bit(token, sbi->ll_flags);
#else
struct lustre_sb_info *lsi = s2lsi(sb);
err = llcrypt_set_test_dummy_encryption(sb,
#ifdef HAVE_FSCRYPT_SET_TEST_DUMMY_ENC_CHAR_ARG
args->from,
#else
&args[0],
#endif
&lsi->lsi_dummy_enc_policy);
if (!err)
break;
if (err == -EEXIST)
LCONSOLE_WARN(
"Can't change test_dummy_encryption");
else if (err == -EINVAL)
LCONSOLE_WARN(
"Value of option \"%s\" unrecognized",
options);
else
LCONSOLE_WARN(
"Error processing option \"%s\" [%d]",
options, err);
err = -1;
#endif
#else
LCONSOLE_WARN("Test dummy encryption mount option ignored: encryption not supported\n");
#endif
break;
}
case LL_SBI_ENCRYPT:
#ifdef HAVE_LUSTRE_CRYPTO
if (turn_off)
clear_bit(token, sbi->ll_flags);
else
set_bit(token, sbi->ll_flags);
#else
LCONSOLE_WARN("noencrypt or encrypt mount option ignored: encryption not supported\n");
#endif
break;
case LL_SBI_FOREIGN_SYMLINK:
/* non-default prefix provided ? */
if (args->from) {
size_t old_len;
char *old;
/* path must be absolute */
if (args->from[0] != '/') {
LCONSOLE_ERROR("foreign prefix '%s' must be an absolute path\n",
args->from);
RETURN(-EINVAL);
}
old_len = sbi->ll_foreign_symlink_prefix_size;
old = sbi->ll_foreign_symlink_prefix;
/* alloc for path length and '\0' */
sbi->ll_foreign_symlink_prefix = match_strdup(args);
if (!sbi->ll_foreign_symlink_prefix) {
/* restore previous */
sbi->ll_foreign_symlink_prefix = old;
sbi->ll_foreign_symlink_prefix_size =
old_len;
RETURN(-ENOMEM);
}
sbi->ll_foreign_symlink_prefix_size =
args->to - args->from + 1;
OBD_ALLOC_POST(sbi->ll_foreign_symlink_prefix,
sbi->ll_foreign_symlink_prefix_size,
"kmalloced");
OBD_FREE(old, old_len);
/* enable foreign symlink support */
set_bit(token, sbi->ll_flags);
} else {
LCONSOLE_ERROR("%s: invalid %s option\n",
get_profile_name(sb), s1);
}
break;
case LL_SBI_USER_PRINCIPAL:
if (args->from) {
char *old = sbi->ll_user_principal;
sbi->ll_user_principal = match_strdup(args);
if (!sbi->ll_user_principal) {
sbi->ll_user_principal = old;
RETURN(-ENOMEM);
}
kfree(old);
set_bit(token, sbi->ll_flags);
} else {
LCONSOLE_ERROR("%s: invalid %s option\n",
get_profile_name(sb), s1);
RETURN(-EINVAL);
}
break;
default:
break;
}
}
kfree(orig_opts);
RETURN(err);
}
void ll_lli_init(struct ll_inode_info *lli)
{
lli->lli_inode_magic = LLI_INODE_MAGIC;
lli->lli_flags = 0;
rwlock_init(&lli->lli_lock);
lli->lli_posix_acl = NULL;
/* Do not set lli_fid, it has been initialized already. */
fid_zero(&lli->lli_pfid);
lli->lli_mds_read_och = NULL;
lli->lli_mds_write_och = NULL;
lli->lli_mds_exec_och = NULL;
lli->lli_open_fd_read_count = 0;
lli->lli_open_fd_write_count = 0;
lli->lli_open_fd_exec_count = 0;
mutex_init(&lli->lli_och_mutex);
spin_lock_init(&lli->lli_agl_lock);
spin_lock_init(&lli->lli_layout_lock);
ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
lli->lli_clob = NULL;
init_rwsem(&lli->lli_xattrs_list_rwsem);
mutex_init(&lli->lli_xattrs_enq_lock);
LASSERT(lli->lli_vfs_inode.i_mode != 0);
if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
lli->lli_opendir_key = NULL;
lli->lli_sai = NULL;
spin_lock_init(&lli->lli_sa_lock);
lli->lli_stat_pid = 0;
lli->lli_sa_enabled = 0;
init_rwsem(&lli->lli_lsm_sem);
} else {
struct job_info *ji = &lli->lli_jobinfo;
mutex_init(&lli->lli_size_mutex);
mutex_init(&lli->lli_setattr_mutex);
lli->lli_symlink_name = NULL;
ll_trunc_sem_init(&lli->lli_trunc_sem);
range_lock_tree_init(&lli->lli_write_tree);
init_rwsem(&lli->lli_glimpse_sem);
lli->lli_glimpse_time = ktime_set(0, 0);
INIT_LIST_HEAD(&lli->lli_agl_list);
lli->lli_agl_index = 0;
lli->lli_async_rc = 0;
spin_lock_init(&lli->lli_heat_lock);
obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
lli->lli_heat_flags = 0;
mutex_init(&lli->lli_pcc_lock);
lli->lli_pcc_state = PCC_STATE_FL_NONE;
lli->lli_pcc_inode = NULL;
lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
lli->lli_pcc_generation = 0;
atomic_set(&lli->lli_pcc_mapcnt, 0);
atomic_set(&lli->lli_pcc_mapneg, 0);
mutex_init(&lli->lli_group_mutex);
lli->lli_group_users = 0;
lli->lli_group_gid = 0;
seqlock_init(&lli->lli_jobinfo_seqlock);
memset(ji->ji_jobid, 0, sizeof(ji->ji_jobid));
ji->ji_uid = (__u32) -1;
ji->ji_gid = (__u32) -1;
}
mutex_init(&lli->lli_layout_mutex);
/* ll_cl_context initialize */
INIT_LIST_HEAD(&lli->lli_lccs);
seqlock_init(&lli->lli_page_inv_lock);
}
#define MAX_STRING_SIZE 128
int ll_fill_super(struct super_block *sb)
{
struct lustre_profile *lprof = NULL;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = NULL;
char *dt = NULL, *md = NULL;
char *profilenm = get_profile_name(sb);
struct config_llog_instance *cfg;
/* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
const int instlen = LUSTRE_MAXINSTANCE + 2;
unsigned long cfg_instance = ll_get_cfg_instance(sb);
char name[MAX_STRING_SIZE];
int md_len = 0;
int dt_len = 0;
uuid_t uuid;
char *ptr;
int len;
int err;
ENTRY;
/* for ASLR, to map between cfg_instance and hashed ptr */
CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
profilenm, cfg_instance, sb);
CFS_RACE(OBD_FAIL_LLITE_RACE_MOUNT);
OBD_ALLOC_PTR(cfg);
if (cfg == NULL)
GOTO(out_free_cfg, err = -ENOMEM);
/* client additional sb info */
lsi->lsi_llsbi = sbi = ll_init_sbi(lsi);
if (IS_ERR(sbi))
GOTO(out_free_cfg, err = PTR_ERR(sbi));
err = ll_options(lsi->lsi_lmd->lmd_opts, sb);
if (err)
GOTO(out_free_cfg, err);
/* LSI_FILENAME_ENC is only used by embedded llcrypt */
#ifdef CONFIG_LL_ENCRYPTION
if (ll_sb_has_test_dummy_encryption(sb))
/* enable filename encryption by default for dummy enc mode */
lsi->lsi_flags |= LSI_FILENAME_ENC;
else
/* filename encryption is disabled by default */
lsi->lsi_flags &= ~LSI_FILENAME_ENC;
#endif
/* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
set_default_d_op(sb, &ll_d_ops);
/* UUID handling */
generate_random_uuid(uuid.b);
snprintf(sbi->ll_sb_uuid.uuid, sizeof(sbi->ll_sb_uuid), "%pU", uuid.b);
CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
/* Get fsname */
len = strlen(profilenm);
ptr = strrchr(profilenm, '-');
if (ptr && (strcmp(ptr, "-client") == 0))
len -= 7;
if (len > LUSTRE_MAXFSNAME) {
if (unlikely(len >= MAX_STRING_SIZE))
len = MAX_STRING_SIZE - 1;
strncpy(name, profilenm, len);
name[len] = '\0';
err = -ENAMETOOLONG;
CERROR("%s: fsname longer than %u characters: rc = %d\n",
name, LUSTRE_MAXFSNAME, err);
GOTO(out_free_cfg, err);
}
strncpy(sbi->ll_fsname, profilenm, len);
sbi->ll_fsname[len] = '\0';
err = gss_rename_sk_key(sbi->ll_skid, sbi->ll_fsname,
sbi->ll_sb_uuid.uuid);
if (err) {
CDEBUG(D_SEC, "Renaming SSK key %d failed: rc = %d\n",
sbi->ll_skid, err);
GOTO(out_free_cfg, err);
}
/* Mount info */
snprintf(name, sizeof(name), "%.*s-%016lx", len,
profilenm, cfg_instance);
err = super_setup_bdi_name(sb, "%s", name);
if (err)
GOTO(out_free_cfg, err);
/* disable kernel readahead */
sb->s_bdi->ra_pages = 0;
sb->s_bdi->io_pages = 0;
sb->s_bdi->capabilities |= LL_BDI_CAP_FLAGS;
sb->s_iflags |= SB_I_CGROUPWB;
/* Call ll_debugfs_register_super() before lustre_process_log()
* so that "llite.*.*" params can be processed correctly.
*/
err = ll_debugfs_register_super(sb, name);
if (err < 0) {
CERROR("%s: could not register mountpoint in llite: rc = %d\n",
sbi->ll_fsname, err);
err = 0;
}
/* The cfg_instance is a value unique to this super, in case some
* joker tries to mount the same fs at two mount points.
*/
cfg->cfg_instance = cfg_instance;
cfg->cfg_kobj = &sbi->ll_kset.kobj;
cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
cfg->cfg_callback = class_config_llog_handler;
cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
/* set up client obds */
err = lustre_process_log(sb, profilenm, cfg);
if (err < 0)
GOTO(out_debugfs, err);
/* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
lprof = class_get_profile(profilenm);
if (lprof == NULL) {
LCONSOLE_ERROR("The client profile '%s' could not be read from the MGS. Does that filesystem exist?\n",
profilenm);
GOTO(out_debugfs, err = -EINVAL);
}
CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
lprof->lp_md, lprof->lp_dt);
dt_len = strlen(lprof->lp_dt) + instlen + 2;
OBD_ALLOC(dt, dt_len);
if (!dt)
GOTO(out_profile, err = -ENOMEM);
snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
md_len = strlen(lprof->lp_md) + instlen + 2;
OBD_ALLOC(md, md_len);
if (!md)
GOTO(out_free_dt, err = -ENOMEM);
snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
/* connections, registrations, sb setup */
err = client_common_fill_super(sb, md, dt);
if (err < 0)
GOTO(out_free_md, err);
sbi->ll_client_common_fill_super_succeeded = 1;
out_free_md:
OBD_FREE(md, md_len);
out_free_dt:
OBD_FREE(dt, dt_len);
out_profile:
if (lprof)
class_put_profile(lprof);
out_debugfs:
if (err < 0)
ll_debugfs_unregister_super(sb);
out_free_cfg:
OBD_FREE_PTR(cfg);
if (err)
ll_put_super(sb);
else if (test_bit(LL_SBI_VERBOSE, sbi->ll_flags))
LCONSOLE_WARN("Mounted %s%s\n", profilenm,
sb->s_flags & SB_RDONLY ? " read-only" : "");
RETURN(err);
} /* ll_fill_super */
static void ll_bdi_device_unregister(struct backing_dev_info *bdi)
{
#if !defined(HAVE_BDI_DEBUG_STATS) && defined(SB_I_CGROUPWB) && \
!defined(SB_I_PERSB_BDI)
if (bdi->dev == NULL)
return;
debugfs_remove_recursive(bdi->debug_dir);
device_unregister(bdi->dev);
bdi->dev = NULL;
#endif
}
void ll_put_super(struct super_block *sb)
{
struct config_llog_instance cfg, params_cfg;
struct obd_device *obd;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
unsigned long dev_no = 0;
char *profilenm = get_profile_name(sb);
unsigned long cfg_instance = ll_get_cfg_instance(sb);
int force = 1;
ENTRY;
if (IS_ERR(sbi))
GOTO(out_no_sbi, 0);
/* Should replace instance_id with something better for ASLR */
CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
profilenm, cfg_instance, sb);
ll_quota_iter_check_and_cleanup(sbi, false);
cfg.cfg_instance = cfg_instance;
lustre_end_log(sb, profilenm, &cfg);
params_cfg.cfg_instance = cfg_instance;
lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
if (sbi->ll_md_exp) {
obd = class_exp2obd(sbi->ll_md_exp);
if (obd)
force = test_bit(OBDF_FORCE, obd->obd_flags);
}
/* We need to set force before the lov_disconnect in
* lustre_common_put_super, since l_d cleans up osc's as well.
*/
if (force) {
obd_device_lock();
obd_device_for_each_uuid(dev_no, obd, &sbi->ll_sb_uuid) {
if (force)
set_bit(OBDF_FORCE, obd->obd_flags);
else
clear_bit(OBDF_FORCE, obd->obd_flags);
}
obd_device_unlock();
}
if (sbi->ll_client_common_fill_super_succeeded) {
/* Only if client_common_fill_super succeeded */
client_common_put_super(sb);
}
gss_cleanup_sk_key(sbi->ll_skid, sbi->ll_fsname,
sbi->ll_sb_uuid.uuid);
/* imitate failed cleanup */
if (CFS_FAIL_CHECK(OBD_FAIL_OBD_CLEANUP))
goto skip_cleanup;
/*
* Cleanup, detach OBD devices, and remove them from Xarray.
* We don't grab the xa_lock() since class_manual_cleanup()
* uses the lock internally.
*/
obd_device_for_each_uuid(dev_no, obd, &sbi->ll_sb_uuid)
class_manual_cleanup(obd);
skip_cleanup:
if (test_bit(LL_SBI_VERBOSE, sbi->ll_flags))
LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
if (profilenm)
class_del_profile(profilenm);
ll_bdi_device_unregister(sb->s_bdi);
llcrypt_free_dummy_policy(&lsi->lsi_dummy_enc_policy);
ll_free_sbi(sb);
lsi->lsi_llsbi = NULL;
out_no_sbi:
lustre_common_put_super(sb);
cl_env_cache_purge(~0);
EXIT;
} /* client_put_super */
struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
{
struct inode *inode = NULL;
/* NOTE: we depend on atomic igrab() -bzzz */
lock_res_and_lock(lock);
if (lock->l_resource->lr_lvb_inode) {
struct ll_inode_info *lli;
lli = ll_i2info(lock->l_resource->lr_lvb_inode);
if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
inode = igrab(lock->l_resource->lr_lvb_inode);
if (inode && !fid_res_name_eq(ll_inode2fid(inode),
&lock->l_resource->lr_name)) {
LDLM_ERROR(lock,
"data mismatch with object "DFID"(%p)",
PFID(ll_inode2fid(inode)), inode);
LBUG();
}
} else {
inode = lock->l_resource->lr_lvb_inode;
LDLM_DEBUG_LIMIT(inode_state_read_once(inode) &
I_FREEING ? D_INFO : D_WARNING, lock,
"lr_lvb_inode %p is bogus: magic %08x",
lock->l_resource->lr_lvb_inode,
lli->lli_inode_magic);
inode = NULL;
}
}
unlock_res_and_lock(lock);
return inode;
}
void ll_dir_clear_lsm_md(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
LASSERT(S_ISDIR(inode->i_mode));
down_write(&lli->lli_lsm_sem);
lmv_stripe_object_put(&lli->lli_lsm_obj);
lmv_stripe_object_put(&lli->lli_def_lsm_obj);
up_write(&lli->lli_lsm_sem);
}
static struct inode *ll_iget_anon_dir(struct super_block *sb,
const struct lu_fid *fid,
struct lustre_md *md)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct ll_inode_info *lli;
struct mdt_body *body = md->body;
struct inode *inode;
ino_t ino;
ENTRY;
LASSERT(md->lsm_obj);
ino = cl_fid_build_ino(fid, test_bit(LL_SBI_32BIT_API, sbi->ll_flags));
inode = iget_locked(sb, ino);
if (inode == NULL) {
CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
sbi->ll_fsname, PFID(fid));
RETURN(ERR_PTR(-ENOENT));
}
lli = ll_i2info(inode);
if (inode_state_read_once(inode) & I_NEW) {
inode->i_mode = (inode->i_mode & ~S_IFMT) |
(body->mbo_mode & S_IFMT);
LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
PFID(fid));
inode_set_mtime(inode, 0, 0);
inode_set_atime(inode, 0, 0);
inode_set_ctime(inode, 0, 0);
inode->i_rdev = 0;
inode->i_op = &ll_dir_inode_operations;
inode->i_fop = &ll_dir_operations;
lli->lli_fid = *fid;
ll_lli_init(lli);
/* master object FID */
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);
} else {
/* in directory restripe/auto-split, a directory will be
* transformed to a stripe if it's plain, set its pfid here,
* otherwise ll_lock_cancel_bits() can't find the master inode.
*/
lli->lli_pfid = body->mbo_fid1;
}
RETURN(inode);
}
static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
{
struct lu_fid *fid;
struct lmv_stripe_md *lsm;
struct ll_inode_info *lli = ll_i2info(inode);
int i;
LASSERT(md->lsm_obj != NULL);
lsm = &md->lsm_obj->lso_lsm;
CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
lmv_stripe_object_dump(D_INODE, md->lsm_obj);
if (!lmv_dir_striped(md->lsm_obj))
goto out;
/* XXX sigh, this lsm_root initialization should be in
* LMV layer, but it needs ll_iget right now, so we
* put this here right now.
*/
for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
fid = &lsm->lsm_md_oinfo[i].lmo_fid;
LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
if (!fid_is_sane(fid))
continue;
/* Unfortunately ll_iget will call ll_update_inode,
* where the initialization of slave inode is slightly
* different, so it reset lsm_md to NULL to avoid
* initializing lsm for slave inode.
*/
lsm->lsm_md_oinfo[i].lmo_root =
ll_iget_anon_dir(inode->i_sb, fid, md);
if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
lsm->lsm_md_oinfo[i].lmo_root = NULL;
while (i-- > 0) {
iput(lsm->lsm_md_oinfo[i].lmo_root);
lsm->lsm_md_oinfo[i].lmo_root = NULL;
}
return rc;
}
}
out:
/* move lsm_obj to lli */
lli->lli_lsm_obj = md->lsm_obj;
md->lsm_obj = NULL;
return 0;
}
static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct lmv_stripe_object *lsm_obj = md->def_lsm_obj;
ENTRY;
if (!lsm_obj) {
/* clear default lsm */
if (lli->lli_def_lsm_obj && lli->lli_def_lsm_obj_set) {
down_write(&lli->lli_lsm_sem);
if (lli->lli_def_lsm_obj_set) {
lmv_stripe_object_put(&lli->lli_def_lsm_obj);
lli->lli_inherit_depth = 0;
lli->lli_def_lsm_obj_set = 0;
}
up_write(&lli->lli_lsm_sem);
}
RETURN_EXIT;
}
if (lli->lli_def_lsm_obj) {
/* do nonthing if default lsm isn't changed */
down_read(&lli->lli_lsm_sem);
if (lli->lli_def_lsm_obj &&
lsm_md_eq(lli->lli_def_lsm_obj, lsm_obj)) {
up_read(&lli->lli_lsm_sem);
RETURN_EXIT;
}
up_read(&lli->lli_lsm_sem);
}
down_write(&lli->lli_lsm_sem);
/* update default lsm. */
lmv_stripe_object_put(&lli->lli_def_lsm_obj);
lli->lli_def_lsm_obj = lsm_obj;
lli->lli_def_lsm_obj_set = 1;
lmv_stripe_object_dump(D_INODE, lsm_obj);
md->def_lsm_obj = NULL;
up_write(&lli->lli_lsm_sem);
RETURN_EXIT;
}
static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct lmv_stripe_object *lsm_obj = md->lsm_obj;
struct cl_attr *attr;
int rc = 0;
ENTRY;
LASSERT(S_ISDIR(inode->i_mode));
CDEBUG(D_INODE, "update lsm_obj %p of "DFID"\n", lli->lli_lsm_obj,
PFID(ll_inode2fid(inode)));
/* update default LMV */
if (md->def_lsm_obj)
ll_update_default_lsm_md(inode, md);
/* after dir migration/restripe, a stripe may be turned into a
* directory, in this case, zero out its lli_pfid.
*/
if (unlikely(fid_is_norm(&lli->lli_pfid)))
fid_zero(&lli->lli_pfid);
/*
* no striped information from request, lustre_md from req does not
* include stripeEA, see ll_md_setattr()
*/
if (!lsm_obj)
RETURN(0);
/*
* normally dir layout doesn't change, only take read lock to check
* that to avoid blocking other MD operations.
*/
down_read(&lli->lli_lsm_sem);
/* some current lookup initialized lsm, and unchanged */
if (lli->lli_lsm_obj && lsm_md_eq(lli->lli_lsm_obj, lsm_obj)) {
up_read(&lli->lli_lsm_sem);
RETURN(0);
}
up_read(&lli->lli_lsm_sem);
down_write(&lli->lli_lsm_sem);
/* check again in case of a race */
if (lli->lli_lsm_obj && lsm_md_eq(lli->lli_lsm_obj, lsm_obj))
GOTO(unlock, rc = 0);
/* if dir layout doesn't match, check whether version is increased,
* which means layout is changed, this happens in dir split/merge and
* lfsck.
*
* foreign LMV should not change.
*/
if (lli->lli_lsm_obj && lmv_dir_striped(lli->lli_lsm_obj) &&
lsm_obj->lso_lsm.lsm_md_layout_version <=
lli->lli_lsm_obj->lso_lsm.lsm_md_layout_version) {
CERROR("%s: "DFID" dir layout mismatch:\n",
ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
lmv_stripe_object_dump(D_ERROR, lli->lli_lsm_obj);
lmv_stripe_object_dump(D_ERROR, lsm_obj);
GOTO(unlock, rc = -EINVAL);
}
/* clear existing lsm */
lmv_stripe_object_put(&lli->lli_lsm_obj);
rc = ll_init_lsm_md(inode, md);
if (rc)
GOTO(unlock, rc);
if (!lmv_dir_striped(lli->lli_lsm_obj))
GOTO(unlock, rc = 0);
lsm_obj = lmv_stripe_object_get(lli->lli_lsm_obj);
up_write(&lli->lli_lsm_sem);
OBD_ALLOC_PTR(attr);
if (!attr)
GOTO(err, rc = -ENOMEM);
/* validate the lsm */
rc = md_merge_attr(ll_i2mdexp(inode), lsm_obj, attr,
ll_md_blocking_ast);
if (!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);
EXIT;
err:
lmv_stripe_object_put(&lsm_obj);
return rc;
unlock:
up_write(&lli->lli_lsm_sem);
return rc;
}
void ll_clear_inode(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_i2sbi(inode);
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
PFID(ll_inode2fid(inode)), inode);
if (S_ISDIR(inode->i_mode)) {
/* these should have been cleared in ll_file_release */
LASSERT(lli->lli_opendir_key == NULL);
LASSERT(lli->lli_sai == NULL);
} else {
pcc_inode_free(inode);
}
md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
LASSERT(!lli->lli_open_fd_write_count);
LASSERT(!lli->lli_open_fd_read_count);
LASSERT(!lli->lli_open_fd_exec_count);
if (lli->lli_mds_write_och)
ll_md_real_close(inode, FMODE_WRITE);
if (lli->lli_mds_exec_och)
ll_md_real_close(inode, FMODE_EXEC);
if (lli->lli_mds_read_och)
ll_md_real_close(inode, FMODE_READ);
if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
OBD_FREE(lli->lli_symlink_name,
strlen(lli->lli_symlink_name) + 1);
lli->lli_symlink_name = NULL;
}
ll_xattr_cache_destroy(inode);
forget_all_cached_acls(inode);
lli_clear_acl(lli);
lli->lli_inode_magic = LLI_INODE_DEAD;
if (S_ISDIR(inode->i_mode))
ll_dir_clear_lsm_md(inode);
else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
LASSERT(list_empty(&lli->lli_agl_list));
/*
* XXX This has to be done before lsm is freed below, because
* cl_object still uses inode lsm.
*/
cl_inode_fini(inode);
llcrypt_put_encryption_info(inode);
EXIT;
}
static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
{
struct lustre_md md;
struct inode *inode = dentry->d_inode;
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *request = NULL;
int rc, ia_valid;
ENTRY;
op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
/* If this is a chgrp of a regular file, we want to reserve enough
* quota to cover the entire file size.
*/
if (S_ISREG(inode->i_mode) && op_data->op_attr.ia_valid & ATTR_GID &&
from_kgid(&init_user_ns, op_data->op_attr.ia_gid) !=
from_kgid(&init_user_ns, inode->i_gid)) {
op_data->op_xvalid |= OP_XVALID_BLOCKS;
op_data->op_attr_blocks = inode->i_blocks;
}
rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
if (rc) {
ptlrpc_req_put(request);
if (rc == -ENOENT) {
clear_nlink(inode);
/* Unlinked special device node? Or just a race?
* Pretend we done everything.
*/
if (!S_ISREG(inode->i_mode) &&
!S_ISDIR(inode->i_mode)) {
ia_valid = op_data->op_attr.ia_valid;
op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
rc = simple_setattr(&nop_mnt_idmap, dentry,
&op_data->op_attr);
op_data->op_attr.ia_valid = ia_valid;
}
} else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
CERROR("md_setattr fails: rc = %d\n", rc);
}
RETURN(rc);
}
rc = md_get_lustre_md(sbi->ll_md_exp, &request->rq_pill, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc) {
ptlrpc_req_put(request);
RETURN(rc);
}
ia_valid = op_data->op_attr.ia_valid;
/* 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))
inode_lock(inode);
rc = simple_setattr(&nop_mnt_idmap, dentry, &op_data->op_attr);
if (S_ISREG(inode->i_mode))
inode_unlock(inode);
op_data->op_attr.ia_valid = ia_valid;
rc = ll_update_inode(inode, &md);
ptlrpc_req_put(request);
md_put_lustre_md(sbi->ll_md_exp, &md);
RETURN(rc);
}
/**
* ll_io_zero_page() - Zero portion of page that is part of @inode.
* @inode: inode in operation
* @index: page index
* @offset: offset in page to start zero from
* @len: len to zero
*
* This implies, if necessary:
* - taking cl_lock on range corresponding to concerned page
* - grabbing vm page
* - associating cl_page
* - proceeding to clio read
* - zeroing range in page
* - proceeding to cl_page flush
* - releasing cl_lock
*
* Return:
* * %0 on success
* * %negative errno on failure
*/
static int ll_io_zero_page(struct inode *inode, pgoff_t index, pgoff_t offset,
unsigned int len)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct cl_object *clob = lli->lli_clob;
__u16 refcheck;
struct lu_env *env = NULL;
struct cl_io *io = NULL;
struct cl_page *clpage = NULL;
struct page *vmpage = NULL;
unsigned int from = index << PAGE_SHIFT;
struct cl_lock *lock = NULL;
struct cl_lock_descr *descr = NULL;
struct cl_2queue *queue = NULL;
struct cl_sync_io *anchor = NULL;
bool holdinglock = false;
bool page_locked = false;
int rc;
ENTRY;
env = cl_env_get(&refcheck);
if (IS_ERR(env))
RETURN(PTR_ERR(env));
io = vvp_env_new_io(env);
io->ci_obj = clob;
rc = cl_io_rw_init(env, io, CIT_WRITE, from, PAGE_SIZE);
if (rc)
GOTO(putenv, rc);
lock = vvp_env_new_lock(env);
descr = &lock->cll_descr;
descr->cld_obj = io->ci_obj;
descr->cld_start = from >> PAGE_SHIFT;
descr->cld_end = (from + PAGE_SIZE - 1) >> PAGE_SHIFT;
descr->cld_mode = CLM_WRITE;
descr->cld_enq_flags = CEF_MUST | CEF_NONBLOCK;
/* request lock for page */
rc = cl_lock_request(env, io, lock);
/* -ECANCELED indicates a matching lock with a different extent
* was already present, and -EEXIST indicates a matching lock
* on exactly the same extent was already present.
* In both cases it means we are covered.
*/
if (rc == -ECANCELED || rc == -EEXIST)
rc = 0;
else if (rc < 0)
GOTO(iofini, rc);
else
holdinglock = true;
/* grab page */
vmpage = grab_cache_page_nowait(inode->i_mapping, index);
if (vmpage == NULL)
GOTO(rellock, rc = -EOPNOTSUPP);
page_locked = true;
if (!PageDirty(vmpage)) {
/* associate cl_page */
clpage = cl_page_find(env, clob, folio_index_page(vmpage),
vmpage, CPT_CACHEABLE);
if (IS_ERR(clpage))
GOTO(pagefini, rc = PTR_ERR(clpage));
cl_page_assume(env, io, clpage);
}
if (!PageUptodate(vmpage) && !PageDirty(vmpage) &&
!PageWriteback(vmpage)) {
/* read page */
/* Set PagePrivate2 to detect special case of empty page
* in osc_brw_fini_request().
* It is also used to tell ll_io_read_page() that we do not
* want the vmpage to be unlocked.
*/
SetPagePrivate2(vmpage);
rc = ll_io_read_page(env, io, clpage, NULL);
if (!PagePrivate2(vmpage)) {
/* PagePrivate2 was cleared in osc_brw_fini_request()
* meaning we read an empty page. In this case, in order
* to avoid allocating unnecessary block in truncated
* file, we must not zero and write as below. Subsequent
* server-side truncate will handle things correctly.
*/
cl_page_unassume(env, io, clpage);
GOTO(clpfini, rc = 0);
}
ClearPagePrivate2(vmpage);
if (rc)
GOTO(clpfini, rc);
}
/* Thanks to PagePrivate2 flag, ll_io_read_page() did not unlock
* the vmpage, so we are good to proceed and zero range in page.
*/
zero_user_segments(vmpage, offset, offset + len, 0, 0);
if (holdinglock && clpage) {
/* explicitly write newly modified page */
queue = &io->ci_queue;
cl_2queue_init(queue);
anchor = &vvp_env_info(env)->vti_anchor;
cl_sync_io_init(anchor, 1);
clpage->cp_sync_io = anchor;
cl_page_list_add(&queue->c2_qin, clpage, true);
rc = cl_io_submit_rw(env, io, CRT_WRITE, queue);
if (rc)
GOTO(queuefini1, rc);
rc = cl_sync_io_wait(env, anchor, 0);
if (rc)
GOTO(queuefini2, rc);
cl_page_assume(env, io, clpage);
queuefini2:
cl_2queue_discard(env, io, queue);
queuefini1:
cl_2queue_disown(env, queue);
cl_2queue_fini(env, queue);
/* The page was unlocked by queue disown. */
page_locked = false;
}
clpfini:
if (clpage)
cl_page_put(env, clpage);
pagefini:
if (page_locked)
unlock_page(vmpage);
page_locked = false;
put_page(vmpage);
rellock:
if (holdinglock)
cl_lock_release(env, lock);
iofini:
cl_io_fini(env, io);
putenv:
if (env)
cl_env_put(env, &refcheck);
RETURN(rc);
}
/**
* volatile_ref_file() - Get reference file from volatile file name.
* @volatile_name: volatile file name
* @volatile_len: volatile file name length
* @ref_file: pointer to struct file of reference file
*
* Volatile file name may look like:
* <parent>/LUSTRE_VOLATILE_HDR:<mdt_index>:<random>:fd=<fd>
* where fd is opened descriptor of reference file.
*
* Return:
* * %0 on success
* * %negative errno on failure
*/
int volatile_ref_file(const char *volatile_name, int volatile_len,
struct file **ref_file)
{
char *p, *q, *fd_str;
int fd, rc;
p = strnstr(volatile_name, ":fd=", volatile_len);
if (!p || strlen(p + 4) == 0)
return -EINVAL;
q = strchrnul(p + 4, ':');
fd_str = kstrndup(p + 4, q - p - 4, GFP_NOFS);
if (!fd_str)
return -ENOMEM;
rc = kstrtouint(fd_str, 10, &fd);
kfree(fd_str);
if (rc)
return -EINVAL;
*ref_file = fget(fd);
if (!(*ref_file))
return -EINVAL;
return 0;
}
/* 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.
* We do the MDS operations first, as it is checking permissions for us.
* We don't do the MDS RPC if there is nothing that we want to store there,
* otherwise there is no harm in updating mtime/atime on the MDS if we are
* going to do an RPC anyways.
*
* If we are doing a truncate, we will send the mtime and ctime updates
* to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
* I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
* at the same time.
*
* In case of HSMimport, we only set attr on MDS.
*/
int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
enum op_xvalid xvalid, bool hsm_import)
{
struct inode *inode = dentry->d_inode;
struct ll_inode_info *lli = ll_i2info(inode);
struct md_op_data *op_data = NULL;
ktime_t kstart = ktime_get();
int rc = 0;
ENTRY;
CDEBUG(D_VFSTRACE|D_IOTRACE,
"START file "DNAME":"DFID"(%p) current size %llu, valid attrs %x, mode %x, uid %d, gid %d, new size %llu, atime %lld.%.9ld, mtime %lld.%.9ld, ctime %lld.%.9ld\n",
encode_fn_dentry(dentry), PFID(ll_inode2fid(inode)), inode,
i_size_read(inode), attr->ia_valid, attr->ia_mode,
attr->ia_uid.val, attr->ia_gid.val, attr->ia_size,
(long long) attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec,
(long long) attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec,
(long long) attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec);
if (attr->ia_valid & ATTR_SIZE) {
/* Check new size against VFS/VM file size limit and rlimit */
rc = inode_newsize_ok(inode, attr->ia_size);
if (rc)
GOTO(clear, rc);
/* The maximum Lustre file size is variable, based on the
* OST maximum object size and number of stripes. This
* needs another check in addition to the VFS check above.
*/
if (attr->ia_size > ll_file_maxbytes(inode)) {
CDEBUG(D_INODE, "file "DFID" too large %llu > %llu\n",
PFID(&lli->lli_fid), attr->ia_size,
ll_file_maxbytes(inode));
GOTO(clear, rc = -EFBIG);
}
attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
CDEBUG(D_INODE, "inode %p attr need_sync_to_oss "DFID"\n",
inode, PFID(&ll_i2info(inode)->lli_fid));
lli->lli_need_sync_to_oss = true;
}
/* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
if (attr->ia_valid & TIMES_SET_FLAGS) {
if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
!capable(CAP_FOWNER))
GOTO(clear, rc = -EPERM);
}
/* We mark all of the fields "set" so MDS/OST does not re-set them */
if (!(attr->ia_valid & ATTR_CTIME_SET) &&
(attr->ia_valid & ATTR_CTIME)) {
attr->ia_ctime = current_time(inode);
attr->ia_valid |= ATTR_CTIME_SET;
}
if (!(attr->ia_valid & ATTR_ATIME_SET) &&
(attr->ia_valid & ATTR_ATIME)) {
attr->ia_atime = current_time(inode);
attr->ia_valid |= ATTR_ATIME_SET;
}
if (!(attr->ia_valid & ATTR_MTIME_SET) &&
(attr->ia_valid & ATTR_MTIME)) {
attr->ia_mtime = current_time(inode);
attr->ia_valid |= ATTR_MTIME_SET;
}
if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
(s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
ktime_get_real_seconds());
if (S_ISREG(inode->i_mode))
inode_unlock(inode);
if (attr->ia_valid & ~(ATTR_ATIME | ATTR_CTIME | ATTR_MTIME)) {
CDEBUG(D_INODE, "inode %p attr %#x need_sync_to_mds "DFID"\n",
inode, attr->ia_valid, PFID(&ll_i2info(inode)->lli_fid));
lli->lli_need_sync_to_mds = true;
}
/* 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)
GOTO(out, rc = -ENOMEM);
if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
/* If changing file size, file content is modified, flag it */
xvalid |= OP_XVALID_OWNEROVERRIDE;
op_data->op_bias |= MDS_DATA_MODIFIED;
clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags);
}
if (attr->ia_valid & ATTR_FILE) {
struct ll_file_data *lfd = attr->ia_file->private_data;
if (lfd->fd_lease_och)
op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
}
op_data->op_attr = *attr;
op_data->op_xvalid = xvalid;
rc = ll_md_setattr(dentry, op_data);
if (rc)
GOTO(out, rc);
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_CTIME | ATTR_CTIME_SET |
ATTR_UID | ATTR_GID)) {
bool cached = false;
rc = pcc_inode_setattr(inode, attr, &cached);
if (cached) {
if (rc) {
CERROR("%s: PCC inode "DFID" setattr failed: rc = %d\n",
ll_i2sbi(inode)->ll_fsname,
PFID(&lli->lli_fid), rc);
GOTO(out, rc);
}
} else {
unsigned int flags = 0;
/* 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 (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode)) {
xvalid |= OP_XVALID_FLAGS;
flags = LUSTRE_ENCRYPT_FL;
/* Call to ll_io_zero_page is not necessary if
* truncating on PAGE_SIZE boundary, because
* whole pages will be wiped.
*
* an exception is when working with the
* raw ciphertext - in that case, we need to
* encrypt those zeroes
*/
if (attr->ia_valid & ATTR_SIZE &&
attr->ia_size & ~PAGE_MASK &&
!(attr->ia_valid & ATTR_FILE &&
attr->ia_file->f_flags & O_CIPHERTEXT)) {
pgoff_t offset =
attr->ia_size & (PAGE_SIZE - 1);
rc = ll_io_zero_page(inode,
attr->ia_size >> PAGE_SHIFT,
offset, PAGE_SIZE - offset);
if (rc)
GOTO(out, rc);
}
/* If encrypted volatile file without the key,
* we need to fetch size from reference file,
* and set it on OST objects. This happens when
* migrating or extending an encrypted file
* without the key.
*/
if (filename_is_volatile(dentry->d_name.name,
dentry->d_name.len,
NULL) &&
!ll_has_encryption_key(inode)) {
struct file *ref_file;
struct inode *ref_inode;
struct ll_inode_info *ref_lli;
struct cl_object *ref_obj;
struct cl_attr ref_attr = { 0 };
struct lu_env *env;
__u16 refcheck;
rc = volatile_ref_file(
dentry->d_name.name,
dentry->d_name.len,
&ref_file);
if (rc)
GOTO(out, rc);
ref_inode = file_inode(ref_file);
if (!ref_inode) {
fput(ref_file);
GOTO(out, rc = -EINVAL);
}
env = cl_env_get(&refcheck);
if (IS_ERR(env))
GOTO(out, rc = PTR_ERR(env));
ref_lli = ll_i2info(ref_inode);
ref_obj = ref_lli->lli_clob;
cl_object_attr_lock(ref_obj);
rc = cl_object_attr_get(env, ref_obj,
&ref_attr);
cl_object_attr_unlock(ref_obj);
cl_env_put(env, &refcheck);
fput(ref_file);
if (rc)
GOTO(out, rc);
attr->ia_valid |= ATTR_SIZE;
attr->ia_size = ref_attr.cat_size;
}
}
rc = cl_setattr_ost(inode, attr, xvalid, flags);
}
}
/* 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 (test_and_clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags)) {
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 != NULL)
ll_finish_md_op_data(op_data);
if (S_ISREG(inode->i_mode)) {
inode_lock(inode);
if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
inode_dio_wait(inode);
/* Once we've got the i_mutex, it's safe to set the S_NOSEC
* flag. ll_update_inode (called from ll_md_setattr), clears
* inode flags, so there is a gap where S_NOSEC is not set.
* This can cause a writer to take the i_mutex unnecessarily,
* but this is safe to do and should be rare.
*/
inode_has_no_xattr(inode);
}
if (!rc)
ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
LPROC_LL_TRUNC : LPROC_LL_SETATTR,
ktime_us_delta(ktime_get(), kstart));
clear:
CDEBUG(D_VFSTRACE|D_IOTRACE,
"COMPLETED file "DNAME":"DFID"(%p) current size %llu, valid attrs %x, mode %x, uid %d, gid %d, new size %llu, atime %lld.%.9ld, mtime %lld.%.9ld, ctime %lld.%.9ld, rc %d\n",
encode_fn_dentry(dentry), PFID(ll_inode2fid(inode)), inode,
i_size_read(inode), attr->ia_valid, attr->ia_mode,
attr->ia_uid.val, attr->ia_gid.val, attr->ia_size,
(long long) attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec,
(long long) attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec,
(long long) attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, rc);
RETURN(rc);
}
int ll_setattr(struct mnt_idmap *map, struct dentry *de, struct iattr *attr)
{
int mode = de->d_inode->i_mode;
enum op_xvalid xvalid = 0;
int rc;
rc = setattr_prepare(map, de, attr);
if (rc)
return rc;
rc = llcrypt_prepare_setattr(de, attr);
if (rc)
return rc;
if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
(ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
xvalid |= OP_XVALID_OWNEROVERRIDE;
if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
(ATTR_SIZE|ATTR_MODE)) &&
(((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
(((mode & (S_ISGID | 0010)) == (S_ISGID | 0010)) &&
!(attr->ia_mode & S_ISGID))))
attr->ia_valid |= ATTR_FORCE;
if ((attr->ia_valid & ATTR_MODE) &&
(mode & S_ISUID) &&
!(attr->ia_mode & S_ISUID) &&
!(attr->ia_valid & ATTR_KILL_SUID))
attr->ia_valid |= ATTR_KILL_SUID;
if ((attr->ia_valid & ATTR_MODE) &&
((mode & (S_ISGID | 0010)) == (S_ISGID | 0010)) &&
!(attr->ia_mode & S_ISGID) &&
!(attr->ia_valid & ATTR_KILL_SGID))
attr->ia_valid |= ATTR_KILL_SGID;
return ll_setattr_raw(de, attr, xvalid, false);
}
int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
u32 flags)
{
struct obd_statfs ost_osfs = { 0 };
time64_t max_age;
int rc;
ENTRY;
if (sbi->ll_client_common_fill_super_succeeded == 0)
RETURN(-ENOENT);
max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
if (test_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags))
flags |= OBD_STATFS_NODELAY;
rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
if (rc)
RETURN(rc);
osfs->os_type = LL_SUPER_MAGIC;
CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
if (osfs->os_state & OS_STATFS_SUM)
GOTO(out, rc);
rc = obd_statfs(NULL, sbi->ll_dt_exp, &ost_osfs, max_age, flags);
if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
GOTO(out, rc = 0);
CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
ost_osfs.os_bavail, ost_osfs.os_blocks, ost_osfs.os_ffree,
ost_osfs.os_files);
osfs->os_bsize = ost_osfs.os_bsize;
osfs->os_blocks = ost_osfs.os_blocks;
osfs->os_bfree = ost_osfs.os_bfree;
osfs->os_bavail = ost_osfs.os_bavail;
/* do not update MDT os_namelen, OSTs do not store filenames */
/* only update from OST os_maxbytes, DoM files are small */
osfs->os_maxbytes = ost_osfs.os_maxbytes;
/* OR failure states, AND performance states */
osfs->os_state |= ost_osfs.os_state & ~OS_STATFS_DOWNGRADE;
osfs->os_state &= ost_osfs.os_state & OS_STATFS_UPGRADE;
/* If we have _some_ OSTs, but don't have as many free objects on the
* OSTs as inodes on the MDTs, reduce the reported number of inodes
* to compensate, so that the "inodes in use" number is correct.
* This should be kept in sync with lod_statfs() behaviour.
*/
if (ost_osfs.os_files && ost_osfs.os_ffree < osfs->os_ffree) {
osfs->os_files = (osfs->os_files - osfs->os_ffree) +
ost_osfs.os_ffree;
osfs->os_ffree = ost_osfs.os_ffree;
}
out:
RETURN(rc);
}
static int ll_statfs_project(struct inode *inode, struct kstatfs *sfs)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_s2sbi(inode->i_sb);
struct if_quotactl qctl = {
.qc_cmd = LUSTRE_Q_GETQUOTA,
.qc_type = PRJQUOTA,
.qc_valid = QC_GENERAL,
};
struct proj_sfs_cache *ps, *orig;
u64 limit, curblock;
int ret;
ENTRY;
ps = rhashtable_lookup_fast(&sbi->ll_proj_sfs_htable,
&lli->lli_projid,
proj_sfs_cache_params);
if (!ps) {
OBD_ALLOC_PTR(ps);
if (!ps)
RETURN(-ENOMEM);
ps->psc_id = lli->lli_projid;
mutex_init(&ps->psc_mutex);
orig = rhashtable_lookup_get_insert_fast(&sbi->ll_proj_sfs_htable,
&ps->psc_linkage,
proj_sfs_cache_params);
if (orig) {
OBD_FREE_PTR(ps);
if (IS_ERR(orig))
RETURN(PTR_ERR(orig));
ps = orig;
}
}
if (ktime_get_seconds() - ps->psc_age < sbi->ll_statfs_max_age) {
*sfs = ps->psc_sfs;
RETURN(0);
}
mutex_lock(&ps->psc_mutex);
if (ktime_get_seconds() - ps->psc_age < sbi->ll_statfs_max_age) {
*sfs = ps->psc_sfs;
GOTO(out, ret = 0);
}
qctl.qc_id = ll_i2info(inode)->lli_projid;
ret = quotactl_ioctl(inode->i_sb, &qctl);
if (ret) {
/* ignore errors if project ID does not have
* a quota limit or feature unsupported.
*/
if (ret == -ESRCH || ret == -EOPNOTSUPP)
ret = 0;
GOTO(out, ret);
}
/*
* f_bsize=0: server lod_foreach_mdt passed uninitialized
* sub-MDT opd_statfs (os_bsize=0) into lod_statfs_sum(),
* corrupting os_bsize. Fall back to 4096.
*/
if (unlikely(sfs->f_bsize == 0)) {
sfs->f_bsize = 4096;
CDEBUG(D_SUPER, "%s: f_bsize=0 sub-MDT opd_statfs uninitialized, corrected to %lu\n",
ll_i2sbi(inode)->ll_fsname, sfs->f_bsize);
}
limit = ((qctl.qc_dqblk.dqb_bsoftlimit ?
qctl.qc_dqblk.dqb_bsoftlimit :
qctl.qc_dqblk.dqb_bhardlimit) * 1024) / sfs->f_bsize;
if (limit && sfs->f_blocks > limit) {
curblock = (qctl.qc_dqblk.dqb_curspace +
sfs->f_bsize - 1) / sfs->f_bsize;
sfs->f_blocks = limit;
sfs->f_bfree = sfs->f_bavail =
(sfs->f_blocks > curblock) ?
(sfs->f_blocks - curblock) : 0;
}
limit = qctl.qc_dqblk.dqb_isoftlimit ?
qctl.qc_dqblk.dqb_isoftlimit :
qctl.qc_dqblk.dqb_ihardlimit;
if (limit && sfs->f_files > limit) {
sfs->f_files = limit;
sfs->f_ffree = (sfs->f_files >
qctl.qc_dqblk.dqb_curinodes) ?
(sfs->f_files - qctl.qc_dqblk.dqb_curinodes) : 0;
}
ps->psc_sfs = *sfs;
ps->psc_age = ktime_get_seconds();
out:
mutex_unlock(&ps->psc_mutex);
RETURN(ret);
}
int ll_statfs(struct dentry *de, struct kstatfs *sfs)
{
struct super_block *sb = de->d_sb;
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_statfs osfs;
__u64 fsid = huge_encode_dev(sb->s_dev);
ktime_t kstart = ktime_get();
int rc;
CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p) "DNAME" proj=%u\n", sb->s_id, sb,
encode_fn_dentry(de), ll_i2info(de->d_inode)->lli_projid);
/* Some amount of caching on the client is allowed */
rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_SUM);
if (rc)
return rc;
statfs_unpack(sfs, &osfs);
/* We need to downshift for all 32-bit kernels, because we can't
* tell if the kernel is being called via sys_statfs64() or not.
* Stop before overflowing f_bsize - in which case it is better
* to just risk EOVERFLOW if caller is using old sys_statfs().
*/
if (sizeof(long) < 8) {
while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
sfs->f_bsize <<= 1;
osfs.os_blocks >>= 1;
osfs.os_bfree >>= 1;
osfs.os_bavail >>= 1;
}
}
sfs->f_blocks = osfs.os_blocks;
sfs->f_bfree = osfs.os_bfree;
sfs->f_bavail = osfs.os_bavail;
sfs->f_fsid.val[0] = (__u32)fsid;
sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
sfs->f_namelen = sbi->ll_namelen;
if (test_bit(LL_SBI_STATFS_PROJECT, sbi->ll_flags) &&
test_bit(LLIF_PROJECT_INHERIT, &ll_i2info(de->d_inode)->lli_flags))
return ll_statfs_project(de->d_inode, sfs);
ll_stats_ops_tally(sbi, LPROC_LL_STATFS,
ktime_us_delta(ktime_get(), kstart));
return 0;
}
void ll_inode_size_lock(struct inode *inode)
{
struct ll_inode_info *lli;
LASSERT(!S_ISDIR(inode->i_mode));
lli = ll_i2info(inode);
mutex_lock(&lli->lli_size_mutex);
}
void ll_inode_size_unlock(struct inode *inode)
{
struct ll_inode_info *lli;
lli = ll_i2info(inode);
mutex_unlock(&lli->lli_size_mutex);
}
int ll_inode_size_trylock(struct inode *inode)
{
struct ll_inode_info *lli;
LASSERT(!S_ISDIR(inode->i_mode));
lli = ll_i2info(inode);
return mutex_trylock(&lli->lli_size_mutex);
}
u32 ll_inode2ext_flags(struct inode *inode)
{
u32 ext_flags;
ext_flags = ll_inode_to_ext_flags(inode->i_flags);
/* add here future new lli_flags */
if (test_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags))
ext_flags |= LUSTRE_PROJINHERIT_FL;
return ext_flags;
}
u32 ll_xflags_to_ext_flags(u32 xflags)
{
u32 ext_flags;
u32 inode_flags;
inode_flags = ll_xflags_to_inode_flags(xflags);
ext_flags = ll_inode_to_ext_flags(inode_flags);
if (xflags & FS_XFLAG_PROJINHERIT)
ext_flags |= LUSTRE_PROJINHERIT_FL;
return ext_flags;
}
void ll_update_inode_flags(struct inode *inode, unsigned int ext_flags)
{
/* do not clear encryption flag */
ext_flags |= ll_inode_to_ext_flags(inode->i_flags) & LUSTRE_ENCRYPT_FL;
inode->i_flags = ll_ext_to_inode_flags(ext_flags);
/* add here future new lli_flags */
if (ext_flags & LUSTRE_PROJINHERIT_FL)
set_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
else
clear_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
}
int ll_update_inode(struct inode *inode, struct lustre_md *md)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct mdt_body *body = md->body;
struct ll_sb_info *sbi = ll_i2sbi(inode);
bool api32;
int rc = 0;
if (body->mbo_valid & OBD_MD_FLEASIZE) {
rc = cl_file_inode_init(inode, md);
if (rc)
return rc;
}
if (S_ISDIR(inode->i_mode)) {
rc = ll_update_lsm_md(inode, md);
if (rc != 0)
return rc;
}
if (body->mbo_valid & OBD_MD_FLACL)
lli_replace_acl(lli, md->posix_acl);
api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
inode->i_ino = cl_fid_build_ino(&body->mbo_fid1, api32);
inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
if (body->mbo_valid & OBD_MD_FLATIME) {
if (body->mbo_atime > inode_get_atime_sec(inode))
inode_set_atime(inode, body->mbo_atime, 0);
lli->lli_atime = body->mbo_atime;
}
if (body->mbo_valid & OBD_MD_FLMTIME) {
if (body->mbo_mtime > inode_get_mtime_sec(inode)) {
CDEBUG(D_INODE,
"setting ino %lu mtime from %lld to %llu\n",
inode->i_ino, (s64) inode_get_mtime_sec(inode),
body->mbo_mtime);
inode_set_mtime(inode, body->mbo_mtime, 0);
}
lli->lli_mtime = body->mbo_mtime;
}
if (body->mbo_valid & OBD_MD_FLCTIME) {
if (body->mbo_ctime > inode_get_ctime_sec(inode))
inode_set_ctime(inode, body->mbo_ctime, 0);
lli->lli_ctime = body->mbo_ctime;
}
if (body->mbo_valid & OBD_MD_FLBTIME)
lli->lli_btime = body->mbo_btime;
/* Clear i_flags to remove S_NOSEC before permissions are updated */
if (body->mbo_valid & OBD_MD_FLFLAGS)
ll_update_inode_flags(inode, body->mbo_flags);
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 (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_FLPROJID)
lli->lli_projid = body->mbo_projid;
if (body->mbo_valid & OBD_MD_FLNLINK) {
spin_lock(&inode->i_lock);
set_nlink(inode, body->mbo_nlink);
spin_unlock(&inode->i_lock);
}
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->mbo_fid1),
"Trying to change FID "DFID" to the "DFID", inode "DFID"(%px)\n",
PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
PFID(ll_inode2fid(inode)), inode);
} else {
lli->lli_fid = body->mbo_fid1;
}
}
LASSERT(fid_seq(&lli->lli_fid) != 0);
/* In case of encrypted file without the key, please do not lose
* clear text size stored into lli_lazysize in ll_merge_attr(),
* we will need it in ll_prepare_close().
*/
if (lli->lli_attr_valid & OBD_MD_FLLAZYSIZE && lli->lli_lazysize &&
IS_ENCRYPTED(inode) && !ll_has_encryption_key(inode))
lli->lli_attr_valid = body->mbo_valid | OBD_MD_FLLAZYSIZE;
else
lli->lli_attr_valid = body->mbo_valid;
if (body->mbo_valid & OBD_MD_FLSIZE) {
i_size_write(inode, body->mbo_size);
CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
PFID(ll_inode2fid(inode)),
(unsigned long long)body->mbo_size);
if (body->mbo_valid & OBD_MD_FLBLOCKS)
inode->i_blocks = body->mbo_blocks;
} else {
if (body->mbo_valid & OBD_MD_FLLAZYSIZE)
lli->lli_lazysize = body->mbo_size;
if (body->mbo_valid & OBD_MD_FLLAZYBLOCKS)
lli->lli_lazyblocks = 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)
set_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
else
clear_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
}
return 0;
}
/* if default LMV is implicitly inherited, subdir default LMV is maintained on
* client side.
*/
static int ll_dir_default_lmv_inherit(struct inode *dir, struct inode *inode)
{
struct ll_inode_info *plli = ll_i2info(dir);
struct ll_inode_info *lli = ll_i2info(inode);
struct lmv_stripe_object *plsm_obj;
struct lmv_stripe_object *lsm_obj;
int rc = 0;
ENTRY;
/* ROOT default LMV is not inherited */
if (is_root_inode(dir) ||
!(exp_connect_flags2(ll_i2mdexp(dir)) &
OBD_CONNECT2_DMV_IMP_INHERIT))
RETURN(0);
/* nothing to do if no default LMV on both */
if (!plli->lli_def_lsm_obj && !lli->lli_def_lsm_obj)
RETURN(0);
/* subdir default LMV comes from disk */
if (lli->lli_def_lsm_obj && lli->lli_def_lsm_obj_set)
RETURN(0);
/* delete subdir default LMV if parent's is deleted or becomes
* uninheritable.
*/
down_read(&plli->lli_lsm_sem);
plsm_obj = plli->lli_def_lsm_obj;
if (!plsm_obj ||
!lmv_is_inheritable(plsm_obj->lso_lsm.lsm_md_max_inherit)) {
if (lli->lli_def_lsm_obj && !lli->lli_def_lsm_obj_set) {
down_write(&lli->lli_lsm_sem);
if (!lli->lli_def_lsm_obj_set) {
lmv_stripe_object_put(&lli->lli_def_lsm_obj);
lli->lli_inherit_depth = 0;
}
up_write(&lli->lli_lsm_sem);
}
GOTO(unlock_parent, rc = 0);
}
/* do nothing if inherited LMV is unchanged */
if (lli->lli_def_lsm_obj) {
rc = 1;
down_read(&lli->lli_lsm_sem);
if (!lli->lli_def_lsm_obj_set)
rc = lmv_object_inherited(plsm_obj,
lli->lli_def_lsm_obj);
up_read(&lli->lli_lsm_sem);
if (rc == 1)
GOTO(unlock_parent, rc = 0);
}
/* inherit default LMV */
down_write(&lli->lli_lsm_sem);
if (lli->lli_def_lsm_obj) {
/* checked above, but in case of race, check again with lock */
if (lli->lli_def_lsm_obj_set)
GOTO(unlock_child, rc = 0);
/* always update subdir default LMV in case parent's changed */
lsm_obj = lli->lli_def_lsm_obj;
} else {
lsm_obj = lmv_stripe_object_alloc(LMV_USER_MAGIC, NULL, 0);
if (IS_ERR(lsm_obj))
GOTO(unlock_child, rc = PTR_ERR(lsm_obj));
lli->lli_def_lsm_obj = lsm_obj;
}
lsm_obj->lso_lsm = plsm_obj->lso_lsm;
lsm_obj->lso_lsm.lsm_md_max_inherit =
lmv_inherit_next(plsm_obj->lso_lsm.lsm_md_max_inherit);
lsm_obj->lso_lsm.lsm_md_max_inherit_rr =
lmv_inherit_rr_next(plsm_obj->lso_lsm.lsm_md_max_inherit_rr);
lli->lli_inherit_depth = plli->lli_inherit_depth + 1;
lmv_stripe_object_dump(D_INODE, lsm_obj);
EXIT;
unlock_child:
up_write(&lli->lli_lsm_sem);
unlock_parent:
up_read(&plli->lli_lsm_sem);
return rc;
}
enum lsm_sem_class {
LSM_SEM_PARENT,
LSM_SEM_CHILD,
};
/**
* ll_update_dir_depth_dmv() - Update directory depth and default LMV
* @dir: parent directory inode
* @de: dentry
*
* Update directory depth to ROOT and inherit default LMV from parent if
* parent's default LMV is inheritable. The default LMV set with command
* "lfs setdirstripe -D ..." is stored on MDT, while the inherited default LMV
* is generated at runtime on client side.
*/
void ll_update_dir_depth_dmv(struct inode *dir, struct dentry *de)
{
struct inode *inode = de->d_inode;
struct ll_inode_info *plli;
struct ll_inode_info *lli;
LASSERT(S_ISDIR(inode->i_mode));
if (inode == dir)
return;
plli = ll_i2info(dir);
lli = ll_i2info(inode);
lli->lli_dir_depth = plli->lli_dir_depth + 1;
if (lli->lli_def_lsm_obj && lli->lli_def_lsm_obj_set) {
if (plli->lli_def_lsm_obj) {
down_read_nested(&plli->lli_lsm_sem, LSM_SEM_PARENT);
down_read_nested(&lli->lli_lsm_sem, LSM_SEM_CHILD);
if (lmv_object_inherited(plli->lli_def_lsm_obj,
lli->lli_def_lsm_obj))
lli->lli_inherit_depth =
plli->lli_inherit_depth + 1;
else
/* in case parent default LMV changed */
lli->lli_inherit_depth = 0;
up_read(&lli->lli_lsm_sem);
up_read(&plli->lli_lsm_sem);
} else {
/* in case parent default LMV deleted */
lli->lli_inherit_depth = 0;
}
} else {
ll_dir_default_lmv_inherit(dir, inode);
}
if (lli->lli_def_lsm_obj)
CDEBUG(D_INODE,
"%s "DFID" depth %hu %s default LMV inherit depth %hu\n",
de->d_name.name, PFID(&lli->lli_fid), lli->lli_dir_depth,
lli->lli_def_lsm_obj_set ? "server" : "client",
lli->lli_inherit_depth);
}
void ll_truncate_inode_pages_final(struct inode *inode)
{
struct address_space *mapping = &inode->i_data;
unsigned long nrpages;
unsigned long flags;
truncate_inode_pages_final(mapping);
CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_DELAY_TRUNCATE, 5);
/* Workaround for LU-118: Note nrpages may not be totally updated when
* truncate_inode_pages() returns, as there can be a page in the process
* of deletion (inside __delete_from_page_cache()) in the specified
* range. Thus mapping->nrpages can be non-zero when this function
* returns even after truncation of the whole mapping. Only do this if
* npages isn't already zero.
*/
nrpages = mapping->nrpages;
if (nrpages) {
xa_lock_irqsave(&mapping->i_pages, flags);
nrpages = mapping->nrpages;
xa_unlock_irqrestore(&mapping->i_pages, flags);
} /* Workaround end */
if (nrpages) {
XA_STATE(xas, &mapping->i_pages, 0);
struct page *page;
CWARN("%s: inode="DFID"(%p) nrpages=%lu state %#lx, lli_flags %#lx, see https://jira.whamcloud.com/browse/LU-118\n",
ll_i2sbi(inode)->ll_fsname, PFID(ll_inode2fid(inode)),
inode, nrpages,
(unsigned long)inode_state_read_once(inode),
ll_i2info(inode)->lli_flags);
rcu_read_lock();
xas_for_each(&xas, page, ULONG_MAX) {
if (xas_retry(&xas, page))
continue;
if (xa_is_value(page))
continue;
/*
* We can only have non-uptodate pages
* without internal state at this point
*/
LASSERTF(!PageUptodate(page) &&
!PageDirty(page) &&
!PagePrivate(page),
"%px", page);
}
rcu_read_unlock();
}
}
int ll_read_inode2(struct inode *inode, void *opaque)
{
struct lustre_md *md = opaque;
struct ll_inode_info *lli = ll_i2info(inode);
int rc;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
PFID(&lli->lli_fid), inode);
/* 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
* attributes - we just need to make sure they aren't newer.
*/
inode_set_mtime(inode, 0, 0);
inode_set_atime(inode, 0, 0);
inode_set_ctime(inode, 0, 0);
inode->i_rdev = 0;
rc = ll_update_inode(inode, md);
if (rc != 0)
RETURN(rc);
/* OIDEBUG(inode); */
if (S_ISREG(inode->i_mode)) {
struct ll_sb_info *sbi = ll_i2sbi(inode);
inode->i_op = &ll_file_inode_operations;
inode->i_fop = sbi->ll_fop;
inode->i_mapping->a_ops = &ll_aops;
EXIT;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &ll_dir_inode_operations;
inode->i_fop = &ll_dir_operations;
EXIT;
} else if (S_ISLNK(inode->i_mode)) {
inode->i_op = &ll_fast_symlink_inode_operations;
EXIT;
} else {
inode->i_op = &ll_special_inode_operations;
init_special_inode(inode, inode->i_mode,
inode->i_rdev);
EXIT;
}
return 0;
}
void ll_delete_inode(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
/* It is last chance to write out dirty pages,
* otherwise we may lose data while umount.
*
* If i_nlink is 0 then just discard data. This is safe because
* local inode gets i_nlink 0 from server only for the last
* unlink, so that file is not opened somewhere else
*/
cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1,
IO_PRIO_NORMAL);
}
ll_truncate_inode_pages_final(inode);
ll_clear_inode(inode);
clear_inode(inode);
EXIT;
}
static int fileattr_get(struct inode *inode, int *flags,
u32 *xflags,
u32 *projid)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
struct md_op_data *op_data;
struct mdt_body *body;
int rc;
ENTRY;
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));
op_data->op_valid = OBD_MD_FLFLAGS;
rc = md_getattr(sbi->ll_md_exp, op_data, &req);
ll_finish_md_op_data(op_data);
if (rc) {
CERROR("%s: failure inode "DFID": rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name,
PFID(ll_inode2fid(inode)), rc);
RETURN(-abs(rc));
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
*flags = body->mbo_flags;
/* if Lustre specific LUSTRE_ENCRYPT_FL flag is set, also set
* ext4 equivalent to please lsattr and other e2fsprogs tools
*/
if (*flags & LUSTRE_ENCRYPT_FL)
*flags |= STATX_ATTR_ENCRYPTED;
ptlrpc_req_put(req);
*xflags = ll_inode_flags_to_xflags(inode->i_flags);
if (test_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags))
*xflags |= FS_XFLAG_PROJINHERIT;
*projid = ll_i2info(inode)->lli_projid;
RETURN(0);
}
static int fileattr_set(struct inode *inode, int flags)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
struct md_op_data *op_data;
struct fsxattr fa = { 0 };
struct iattr *attr;
int rc;
ENTRY;
fa.fsx_projid = ll_i2info(inode)->lli_projid;
if (flags & LUSTRE_PROJINHERIT_FL)
fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
rc = ll_ioctl_check_project(inode, fa.fsx_xflags,
fa.fsx_projid);
if (rc)
RETURN(rc);
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));
/* Since chattr will get attr first, so we have to filter
* out encrypt flag added in the fileattr_get.
*/
op_data->op_attr_flags = flags & ~LUSTRE_ENCRYPT_FL;
op_data->op_xvalid |= OP_XVALID_FLAGS;
rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
ll_finish_md_op_data(op_data);
ptlrpc_req_put(req);
if (rc)
RETURN(rc);
ll_update_inode_flags(inode, flags);
if (!ll_i2info(inode)->lli_clob)
RETURN(0);
OBD_ALLOC_PTR(attr);
if (attr == NULL)
RETURN(-ENOMEM);
rc = cl_setattr_ost(inode, attr, OP_XVALID_FLAGS, flags);
OBD_FREE_PTR(attr);
RETURN(rc);
}
#ifdef HAVE_FILEATTR_GET
int ll_fileattr_get(struct dentry *dentry, struct file_kattr *fa)
{
return fileattr_get(d_inode(dentry), &fa->flags,
&fa->fsx_xflags, &fa->fsx_projid);
}
int ll_fileattr_set(struct mnt_idmap *mnt_userns,
struct dentry *dentry, struct file_kattr *fa)
{
if (fa->fsx_valid)
return ll_set_project(d_inode(dentry), fa->fsx_xflags,
fa->fsx_projid);
else
return fileattr_set(d_inode(dentry), fa->flags);
}
#endif /* HAVE_FILEATTR_GET */
/* ioctl commands shared between files and directories */
int ll_iocontrol(struct inode *inode, struct file *file,
unsigned int cmd, void __user *uarg)
{
int rc;
ENTRY;
switch (cmd) {
case BLKSSZGET:
RETURN(put_user(PAGE_SIZE, (int __user *)uarg));
case LL_IOC_GETVERSION:
case FS_IOC_GETVERSION:
RETURN(put_user(inode->i_generation, (int __user *)uarg));
#ifndef HAVE_FILEATTR_GET
case FS_IOC_GETFLAGS: {
u32 xflags = 0, projid = 0;
int flags = 0;
if (!access_ok(uarg, sizeof(int)))
RETURN(-EFAULT);
rc = fileattr_get(file->f_inode, &flags, &xflags, &projid);
if (rc)
RETURN(rc);
RETURN(put_user(flags, (int __user *)uarg));
}
case FS_IOC_SETFLAGS: {
int flags = 0;
if (get_user(flags, (int __user *)uarg))
RETURN(-EFAULT);
RETURN(fileattr_set(file->f_inode, flags));
}
case FS_IOC_FSGETXATTR:
RETURN(ll_ioctl_fsgetxattr(inode, cmd, uarg));
case FS_IOC_FSSETXATTR:
RETURN(ll_ioctl_fssetxattr(inode, cmd, uarg));
#endif /* HAVE_FILEATTR_GET */
case LL_IOC_PROJECT:
RETURN(ll_ioctl_project(file, cmd, uarg));
case IOC_OBD_STATFS:
RETURN(ll_obd_statfs(inode, uarg));
case LL_IOC_GET_MDTIDX: {
if (!access_ok(uarg, sizeof(rc)))
RETURN(-EFAULT);
rc = ll_get_mdt_idx(inode);
if (rc < 0)
RETURN(rc);
if (put_user(rc, (int __user *)uarg))
RETURN(-EFAULT);
RETURN(0);
}
case LL_IOC_FLUSHCTX:
RETURN(ll_flush_ctx(inode));
#ifdef HAVE_LUSTRE_CRYPTO
case LL_IOC_ADD_ENCRYPTION_KEY:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
rc = llcrypt_ioctl_add_key(file, uarg);
#ifdef CONFIG_LL_ENCRYPTION
if (!rc && S_ISDIR(inode->i_mode))
obd_pool_add_user();
#endif
RETURN(rc);
case LL_IOC_GET_ENCRYPTION_KEY_STATUS:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
RETURN(llcrypt_ioctl_get_key_status(file, uarg));
case LL_IOC_GET_ENCRYPTION_POLICY_EX:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
RETURN(llcrypt_ioctl_get_policy_ex(file, uarg));
case LL_IOC_SET_ENCRYPTION_POLICY:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
RETURN(llcrypt_ioctl_set_policy(file, uarg));
case LL_IOC_REMOVE_ENCRYPTION_KEY:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
RETURN(llcrypt_ioctl_remove_key(file, uarg));
case LL_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
if (!ll_sbi_has_encrypt(ll_i2sbi(inode)))
return -EOPNOTSUPP;
RETURN(llcrypt_ioctl_remove_key_all_users(file, uarg));
#endif
case LL_IOC_GETPARENT:
RETURN(ll_getparent(file, uarg));
case LL_IOC_PATH2FID:
if (copy_to_user(uarg, ll_inode2fid(inode),
sizeof(struct lu_fid)))
RETURN(-EFAULT);
RETURN(0);
case LL_IOC_UNLOCK_FOREIGN: {
struct dentry *dentry = file_dentry(file);
/* if not a foreign symlink do nothing */
if (ll_foreign_is_removable(dentry, true)) {
CDEBUG(D_INFO,
"prevent unlink of non-foreign file ("DFID")\n",
PFID(ll_inode2fid(inode)));
RETURN(-EOPNOTSUPP);
}
RETURN(0);
}
case OBD_IOC_FID2PATH:
RETURN(ll_fid2path(inode, uarg));
#ifdef OBD_IOC_GETNAME_OLD
case_OBD_IOC_DEPRECATED_FT(OBD_IOC_GETNAME_OLD,
ll_i2sbi(inode)->ll_md_exp->exp_obd->obd_name,
2, 16);
#endif
case OBD_IOC_GETDTNAME:
case OBD_IOC_GETMDNAME:
RETURN(ll_get_obd_name(inode, cmd, uarg));
case OBD_IOC_GETUUID:
RETURN(ll_get_sb_uuid(inode, uarg));
default:
RETURN(-ENOTTY);
}
RETURN(0);
}
int ll_flush_ctx(struct inode *inode)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct lustre_sb_info *lsi = sbi->lsi;
CDEBUG(D_SEC, "flush context for user %d\n",
from_kuid(&init_user_ns, current_uid()));
obd_set_info_async(NULL, lsi->lsi_mgc->u.cli.cl_mgc_mgsexp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
obd_set_info_async(NULL, sbi->ll_md_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
obd_set_info_async(NULL, sbi->ll_dt_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
return 0;
}
/* umount -f client means force down, don't save state */
void ll_umount_begin(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
struct obd_ioctl_data *ioc_data;
int cnt;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
sb->s_count, atomic_read(&sb->s_active));
obd = class_exp2obd(sbi->ll_md_exp);
if (obd == NULL) {
CERROR("Invalid MDC connection handle %#llx\n",
sbi->ll_md_exp->exp_handle.h_cookie);
EXIT;
return;
}
set_bit(OBDF_FORCE, obd->obd_flags);
obd = class_exp2obd(sbi->ll_dt_exp);
if (obd == NULL) {
CERROR("Invalid LOV connection handle %#llx\n",
sbi->ll_dt_exp->exp_handle.h_cookie);
EXIT;
return;
}
set_bit(OBDF_FORCE, obd->obd_flags);
OBD_ALLOC_PTR(ioc_data);
if (ioc_data) {
obd_iocontrol(OBD_IOC_SET_ACTIVE, sbi->ll_md_exp,
sizeof(*ioc_data), ioc_data, NULL);
obd_iocontrol(OBD_IOC_SET_ACTIVE, sbi->ll_dt_exp,
sizeof(*ioc_data), ioc_data, NULL);
OBD_FREE_PTR(ioc_data);
}
/* Really, we'd like to wait until there are no requests outstanding,
* and then continue. For now, we just periodically checking for vfs
* to decrement mnt_cnt and hope to finish it within 10sec.
*/
cnt = 10;
while (cnt > 0 &&
!may_umount(sbi->ll_mnt.mnt)) {
ssleep(1);
cnt -= 1;
}
EXIT;
}
/**
* ll_open_cleanup() - Cleanup the open handle that is cached on MDT-side.
* @sb: super block for this file-system
* @pill: pointer to the original open request message
*
* 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.
*
*/
void ll_open_cleanup(struct super_block *sb, struct req_capsule *pill)
{
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(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_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
RETURN_EXIT;
}
op_data->op_fid1 = body->mbo_fid1;
op_data->op_open_handle = body->mbo_open_handle;
op_data->op_mod_time = ktime_get_real_seconds();
md_close(exp, op_data, NULL, &close_req);
ptlrpc_req_put(close_req);
ll_finish_md_op_data(op_data);
EXIT;
}
/* set filesystem-wide default LMV for subdir mount if it's enabled on ROOT. */
static int ll_fileset_default_lmv_fixup(struct inode *inode,
struct lustre_md *md)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
union lmv_mds_md *lmm = NULL;
int size = 0;
int rc;
LASSERT(is_root_inode(inode));
LASSERT(!fid_is_root(&sbi->ll_root_fid));
LASSERT(!md->def_lsm_obj);
rc = ll_dir_get_default_layout(inode, (void **)&lmm, &size, &req,
OBD_MD_DEFAULT_MEA,
GET_DEFAULT_LAYOUT_ROOT);
if (rc && rc != -ENODATA)
GOTO(out, rc);
rc = 0;
if (lmm && size) {
rc = md_stripe_object_create(sbi->ll_md_exp, &md->def_lsm_obj,
lmm, size);
if (rc < 0)
GOTO(out, rc);
rc = 0;
}
EXIT;
out:
if (req)
ptlrpc_req_put(req);
return rc;
}
int ll_prep_inode(struct inode **inode, struct req_capsule *pill,
struct super_block *sb, struct lookup_intent *it)
{
struct ll_sb_info *sbi = NULL;
struct lustre_md md = { NULL };
bool default_lmv_deleted = false;
int rc;
ENTRY;
LASSERT(*inode || sb);
sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
rc = md_get_lustre_md(sbi->ll_md_exp, pill, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc != 0)
GOTO(out, rc);
/*
* clear default_lmv only if intent_getattr reply doesn't contain it.
* but it needs to be done after iget, check this early because
* ll_update_lsm_md() may change md.
*/
if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
S_ISDIR(md.body->mbo_mode) && !md.def_lsm_obj) {
if (unlikely(*inode && is_root_inode(*inode) &&
!fid_is_root(&sbi->ll_root_fid))) {
rc = ll_fileset_default_lmv_fixup(*inode, &md);
if (rc)
GOTO(out, rc);
}
if (!md.def_lsm_obj)
default_lmv_deleted = true;
}
if (*inode) {
rc = ll_update_inode(*inode, &md);
if (rc != 0)
GOTO(out, rc);
} else {
bool api32 = test_bit(LL_SBI_32BIT_API, sbi->ll_flags);
struct lu_fid *fid1 = &md.body->mbo_fid1;
LASSERT(sb != NULL);
/*
* 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(fid1)) {
CERROR("%s: Fid is insane "DFID"\n",
sbi->ll_fsname, PFID(fid1));
GOTO(out, rc = -EINVAL);
}
*inode = ll_iget(sb, cl_fid_build_ino(fid1, api32), &md);
if (IS_ERR(*inode)) {
lmd_clear_acl(&md);
rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
*inode = NULL;
CERROR("%s: new_inode - fatal error: rc = %d\n",
sbi->ll_fsname, rc);
GOTO(out, rc);
}
}
/* Handling piggyback layout lock.
* Layout lock can be piggybacked by getattr and open request.
* The lsm can be applied to inode only if it comes with a layout lock
* otherwise correct layout may be overwritten, for example:
* 1. proc1: mdt returns a lsm but not granting layout
* 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->it_lock_mode != 0) {
struct lustre_handle lockh;
struct ldlm_lock *lock;
lockh.cookie = it->it_lock_handle;
lock = ldlm_handle2lock(&lockh);
LASSERT(lock != NULL);
if (ldlm_has_layout(lock)) {
struct cl_object_conf conf;
memset(&conf, 0, sizeof(conf));
conf.coc_opc = OBJECT_CONF_SET;
conf.coc_inode = *inode;
conf.coc_lock = lock;
conf.coc_try = false;
conf.u.coc_layout = md.layout;
(void)ll_layout_conf(*inode, &conf);
}
ldlm_lock_put(lock);
}
if (default_lmv_deleted)
ll_update_default_lsm_md(*inode, &md);
/* we may want to apply some policy for foreign file/dir */
if (ll_sbi_has_foreign_symlink(sbi)) {
rc = ll_manage_foreign(*inode, &md);
if (rc < 0)
GOTO(out, rc);
}
GOTO(out, rc = 0);
out:
/* cleanup will be done if necessary */
md_put_lustre_md(sbi->ll_md_exp, &md);
if (rc != 0 && it != NULL && it->it_op & IT_OPEN) {
ll_intent_drop_lock(it);
ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, pill);
}
return rc;
}
int ll_obd_statfs(struct inode *inode, void __user *uarg)
{
struct ll_sb_info *sbi = NULL;
struct obd_export *exp;
struct obd_ioctl_data *data = NULL;
__u32 type;
int len = 0, rc;
if (inode)
sbi = ll_i2sbi(inode);
if (!sbi)
GOTO(out_statfs, rc = -EINVAL);
rc = obd_ioctl_getdata(&data, &len, uarg);
if (rc)
GOTO(out_statfs, rc);
if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
!data->ioc_pbuf1 || !data->ioc_pbuf2)
GOTO(out_statfs, rc = -EINVAL);
if (data->ioc_inllen1 != sizeof(__u32) ||
data->ioc_inllen2 != sizeof(__u32) ||
data->ioc_plen1 != sizeof(struct obd_statfs) ||
data->ioc_plen2 != sizeof(struct obd_uuid))
GOTO(out_statfs, rc = -EINVAL);
memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
if (type & LL_STATFS_LMV)
exp = sbi->ll_md_exp;
else if (type & LL_STATFS_LOV)
exp = sbi->ll_dt_exp;
else
GOTO(out_statfs, rc = -ENODEV);
rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, data, NULL);
if (rc)
GOTO(out_statfs, rc);
out_statfs:
OBD_FREE_LARGE(data, len);
return rc;
}
/*
* this is normally called in ll_fini_md_op_data(), but sometimes it needs to
* be called early to avoid deadlock.
*/
void ll_unlock_md_op_lsm(struct md_op_data *op_data)
{
lmv_stripe_object_put(&op_data->op_lso2);
lmv_stripe_object_put(&op_data->op_lso1);
lmv_stripe_object_put(&op_data->op_default_lso1);
}
/*
* This function determines projid value to pack in metadata requests. This
* value is used to "tag" the requests (for TBF purpose).
*/
static inline __u32 ll_get_inode_projid(struct inode *i1, struct inode *i2)
{
struct ll_inode_info *lli = NULL;
if (i2) {
lli = ll_i2info(i2);
} else if (i1 && S_ISDIR(i1->i_mode)) {
/* lookup case, this is a guess (not always true) */
if (test_bit(LLIF_PROJECT_INHERIT, &ll_i2info(i1)->lli_flags))
lli = ll_i2info(i1);
} else if (i1) {
lli = ll_i2info(i1);
}
return lli ? lli->lli_projid : 0;
}
/* 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, enum md_op_code opc,
void *data)
{
struct llcrypt_name fname = { 0 };
bool op_data_alloc_inside = true;
int rc;
LASSERT(i1 != NULL);
if (name == NULL) {
/* Do not reuse namelen for something else. */
if (namelen != 0)
return ERR_PTR(-EINVAL);
} else {
if ((!IS_ENCRYPTED(i1) ||
(opc != LUSTRE_OPC_LOOKUP && opc != LUSTRE_OPC_CREATE)) &&
namelen > ll_i2sbi(i1)->ll_namelen)
return ERR_PTR(-ENAMETOOLONG);
/* "/" is not valid name, but it's allowed */
if (!lu_name_is_valid_2(name, namelen) &&
strncmp("/", name, namelen) != 0)
return ERR_PTR(-EINVAL);
}
if (op_data == NULL) {
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
return ERR_PTR(-ENOMEM);
} else {
op_data_alloc_inside = false;
}
ll_i2gids(op_data->op_suppgids, i1, i2);
/* If the client is using a subdir mount and looks at what it sees as
* /.fscrypt, interpret it as the .fscrypt dir at the root of the fs.
*/
if (unlikely(i1->i_sb && i1->i_sb->s_root && is_root_inode(i1) &&
!fid_is_root(ll_inode2fid(i1)) &&
name && namelen == strlen(dot_fscrypt_name) &&
strncmp(name, dot_fscrypt_name, namelen) == 0))
lu_root_fid(&op_data->op_fid1);
else
op_data->op_fid1 = *ll_inode2fid(i1);
if (S_ISDIR(i1->i_mode)) {
down_read(&ll_i2info(i1)->lli_lsm_sem);
op_data->op_lso1 =
lmv_stripe_object_get(ll_i2info(i1)->lli_lsm_obj);
op_data->op_default_lso1 =
lmv_stripe_object_get(ll_i2info(i1)->lli_def_lsm_obj);
up_read(&ll_i2info(i1)->lli_lsm_sem);
}
if (i2) {
op_data->op_fid2 = *ll_inode2fid(i2);
if (S_ISDIR(i2->i_mode)) {
down_read(&ll_i2info(i2)->lli_lsm_sem);
op_data->op_lso2 =
lmv_stripe_object_get(ll_i2info(i2)->lli_lsm_obj);
up_read(&ll_i2info(i2)->lli_lsm_sem);
}
} else {
fid_zero(&op_data->op_fid2);
}
if (test_bit(LL_SBI_64BIT_HASH, ll_i2sbi(i1)->ll_flags))
op_data->op_cli_flags |= CLI_HASH64;
if (ll_need_32bit_api(ll_i2sbi(i1)))
op_data->op_cli_flags |= CLI_API32;
if ((i2 && is_root_inode(i2)) ||
opc == LUSTRE_OPC_LOOKUP || opc == LUSTRE_OPC_CREATE) {
/* In case of lookup, ll_setup_filename() has already been
* called in ll_lookup_it(), so just take provided name.
* Also take provided name if we are dealing with root inode.
*/
fname.disk_name.name = (unsigned char *)name;
fname.disk_name.len = namelen;
} else if (name && namelen) {
struct qstr dname = QSTR_INIT(name, namelen);
struct inode *dir;
struct lu_fid *pfid = NULL;
struct lu_fid fid;
int lookup;
if (!S_ISDIR(i1->i_mode) && i2 && S_ISDIR(i2->i_mode)) {
/* special case when called from ll_link() */
dir = i2;
lookup = 0;
} else {
dir = i1;
lookup = (int)(opc == LUSTRE_OPC_ANY);
}
if (opc == LUSTRE_OPC_ANY && lookup)
pfid = &fid;
rc = ll_setup_filename(dir, &dname, lookup, &fname, pfid);
if (rc) {
CERROR("%s: failed to setup filename: rc = %d\n",
ll_i2sbi(i1)->ll_fsname, rc);
if (op_data_alloc_inside)
ll_finish_md_op_data(op_data);
return ERR_PTR(rc);
}
if (pfid && !fid_is_zero(pfid)) {
if (i2 == NULL)
op_data->op_fid2 = fid;
op_data->op_bias = MDS_FID_OP | MDS_NAMEHASH;
}
if (fname.disk_name.name &&
fname.disk_name.name != (unsigned char *)name) {
/* op_data->op_name must be freed after use */
op_data->op_flags |= MF_OPNAME_KMALLOCED;
}
}
/* In fact LUSTRE_OPC_LOOKUP, LUSTRE_OPC_OPEN
* are LUSTRE_OPC_ANY
*/
if (opc == LUSTRE_OPC_LOOKUP || opc == LUSTRE_OPC_OPEN)
op_data->op_code = LUSTRE_OPC_ANY;
else
op_data->op_code = opc;
op_data->op_name = fname.disk_name.name;
op_data->op_namelen = fname.disk_name.len;
op_data->op_mode = mode;
op_data->op_mod_time = ktime_get_real_seconds();
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 = current_cap();
op_data->op_mds = 0;
op_data->op_projid = ll_get_inode_projid(i1, i2);
if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
filename_is_volatile(name, namelen, &op_data->op_mds)) {
op_data->op_bias |= MDS_CREATE_VOLATILE;
}
op_data->op_data = data;
op_data->op_cli_flags |= CLI_READ_ON_OPEN;
return op_data;
}
void ll_finish_md_op_data(struct md_op_data *op_data)
{
ll_unlock_md_op_lsm(op_data);
/* free selinux context */
if (!(op_data->op_flags & MF_SERVER_SECCTX))
ll_security_release_secctx(op_data->op_file_secctx,
op_data->op_file_secctx_size,
op_data->op_file_secctx_slot);
op_data->op_file_secctx_size = 0;
op_data->op_file_secctx_slot = 0;
op_data->op_file_secctx = NULL;
if (op_data->op_flags & MF_OPNAME_KMALLOCED)
/* allocated via ll_setup_filename called
* from ll_prep_md_op_data
*/
kfree(op_data->op_name);
/* free fscrypt context */
if (!(op_data->op_flags & MF_SERVER_ENCCTX))
OBD_FREE(op_data->op_file_encctx, op_data->op_file_encctx_size);
op_data->op_file_encctx_size = 0;
op_data->op_file_encctx = NULL;
OBD_FREE_PTR(op_data);
}
int ll_show_options(struct seq_file *seq, struct dentry *dentry)
{
struct ll_sb_info *sbi;
int i;
LASSERT(seq && dentry);
sbi = ll_s2sbi(dentry->d_sb);
if (test_bit(LL_SBI_NOLCK, sbi->ll_flags))
seq_puts(seq, "nolock");
for (i = 1; ll_sbi_flags_name[i].token != LL_SBI_NUM_MOUNT_OPT; i++) {
/* match_table in some cases has patterns for both enabled and
* disabled cases. Ignore 'no'xxx versions if bit is set.
*/
if (test_bit(ll_sbi_flags_name[i].token, sbi->ll_flags) &&
strncmp(ll_sbi_flags_name[i].pattern, "no", 2)) {
if (ll_sbi_flags_name[i].token ==
LL_SBI_FOREIGN_SYMLINK) {
seq_show_option(seq, "foreign_symlink",
sbi->ll_foreign_symlink_prefix);
} else if (ll_sbi_flags_name[i].token ==
LL_SBI_USER_PRINCIPAL) {
seq_show_option(seq, "user_principal",
sbi->ll_user_principal);
} else {
seq_printf(seq, ",%s",
ll_sbi_flags_name[i].pattern);
}
/* You can have either localflock or flock but not
* both. If localflock is set don't print flock or
* noflock.
*/
if (ll_sbi_flags_name[i].token == LL_SBI_LOCALFLOCK)
i += 2;
} else if (!test_bit(ll_sbi_flags_name[i].token, sbi->ll_flags) &&
!strncmp(ll_sbi_flags_name[i].pattern, "no", 2)) {
seq_printf(seq, ",%s",
ll_sbi_flags_name[i].pattern);
}
}
llcrypt_show_test_dummy_encryption(seq, ',', dentry->d_sb);
RETURN(0);
}
/* Get obd name by cmd, and copy out to user space */
int ll_get_obd_name(struct inode *inode, unsigned int cmd, void __user *uarg)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct obd_device *obd;
ENTRY;
if (cmd == OBD_IOC_GETNAME_OLD || cmd == OBD_IOC_GETDTNAME)
obd = class_exp2obd(sbi->ll_dt_exp);
else if (cmd == OBD_IOC_GETMDNAME)
obd = class_exp2obd(sbi->ll_md_exp);
else
RETURN(-EINVAL);
if (!obd)
RETURN(-ENOENT);
if (copy_to_user(uarg, obd->obd_name, strlen(obd->obd_name) + 1))
RETURN(-EFAULT);
RETURN(0);
}
/*
* Get sb uuid and copy out to user space
*/
int ll_get_sb_uuid(struct inode *inode, void __user *uarg)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
ENTRY;
if (copy_to_user(uarg, sbi->ll_sb_uuid.uuid,
sizeof(sbi->ll_sb_uuid.uuid)))
RETURN(-EFAULT);
RETURN(0);
}
struct dname_buf {
struct work_struct db_work;
struct dentry *db_dentry;
/* Let's hope the path is not too long, 32 bytes for the work struct
* on my kernel
*/
char buf[PAGE_SIZE - sizeof(struct work_struct) - sizeof(void *)];
};
static void ll_dput_later(struct work_struct *work)
{
struct dname_buf *db = container_of(work, struct dname_buf, db_work);
dput(db->db_dentry);
free_page((unsigned long)db);
}
static char *ll_d_path(struct dentry *dentry, char *buf, int bufsize)
{
char *path = NULL;
struct path p;
p.dentry = dentry;
p.mnt = current->fs->root.mnt;
path_get(&p);
path = d_path(&p, buf, bufsize);
path_put(&p);
return path;
}
void ll_dirty_page_discard_warn(struct inode *inode, int ioret)
{
struct dname_buf *db;
char *path = NULL;
struct dentry *dentry = NULL;
/* this can be called inside spin lock so use GFP_ATOMIC. */
db = (struct dname_buf *)__get_free_page(GFP_ATOMIC);
if (db != NULL) {
dentry = d_find_alias(inode);
if (dentry != NULL)
path = ll_d_path(dentry, db->buf, sizeof(db->buf));
}
/* The below message is checked in recovery-small.sh test_24b */
CDEBUG(D_WARNING,
"%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted (rc %d)\n",
ll_i2sbi(inode)->ll_fsname,
s2lsi(inode->i_sb)->lsi_lmd->lmd_dev,
PFID(ll_inode2fid(inode)),
(path && !IS_ERR(path)) ? path : "", ioret);
if (dentry != NULL) {
/* We cannot dput here since if we happen to be the last holder
* then we can end up waiting for page evictions that
* in turn wait for RPCs that need this instance of ptlrpcd
* (callng brw_interpret->*page_completion*->vmpage_error->here)
* LU-15340
*/
INIT_WORK(&db->db_work, ll_dput_later);
db->db_dentry = dentry;
schedule_work(&db->db_work);
} else {
if (db != NULL)
free_page((unsigned long)db);
}
}
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_LARGE(*kbuf, lum_size);
if (*kbuf == NULL)
RETURN(-ENOMEM);
if (copy_from_user(*kbuf, md, lum_size) != 0) {
OBD_FREE_LARGE(*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
*/
void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
{
struct root_squash_info *squash = &sbi->ll_squash;
int i;
bool matched;
struct lnet_processid id;
/* Update norootsquash flag */
spin_lock(&squash->rsi_lock);
if (list_empty(&squash->rsi_nosquash_nids))
clear_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
else {
/* Do not apply root squash as soon as one of our NIDs is
* in the nosquash_nids list
*/
struct lustre_sb_info *lsi = sbi->lsi;
bool large_nid = false;
if (exp_connect_flags2(lsi->lsi_mgc->u.cli.cl_mgc_mgsexp) &
OBD_CONNECT2_LARGE_NID)
large_nid = true;
matched = false;
i = 0;
while (LNetGetId(i++, &id, large_nid) != -ENOENT) {
if (nid_is_lo0(&id.nid))
continue;
if (cfs_match_nid(&id.nid,
&squash->rsi_nosquash_nids)) {
matched = true;
break;
}
}
if (matched)
set_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
else
clear_bit(LL_SBI_NOROOTSQUASH, sbi->ll_flags);
}
spin_unlock(&squash->rsi_lock);
}
/*
* ll_linkea_decode() - Parse linkea content to extract information about a
* given hardlink
* @ldata: Initialized linkea data
* @linkno: Link identifier
* @parent_fid: The entry's parent FID
* @ln: Entry name destination buffer
*
* Return:
* * %0 on success
* * 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_with_rec(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);
}
/**
* ll_getparent() - 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.
* @file: File descriptor against which to perform the operation
* @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
*
* Return:
* * %0 on success
* * Appropriate negative error code on failure
*/
int ll_getparent(struct file *file, struct getparent __user *arg)
{
struct inode *inode = file_inode(file);
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 (!capable(CAP_DAC_READ_SEARCH) &&
!test_bit(LL_SBI_USER_FID2PATH, ll_i2sbi(inode)->ll_flags))
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_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
buf.lb_len, OBD_MD_FLXATTR);
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);
}
