dlm_user_add_ast(lkb, type);
return;
}
- DLM_ASSERT(lkb->lkb_astaddr != DLM_FAKE_USER_AST, dlm_print_lkb(lkb););
spin_lock(&ast_queue_lock);
if (!(lkb->lkb_ast_type & (AST_COMP | AST_BAST))) {
struct dlm_ls *ls = NULL;
struct dlm_rsb *r = NULL;
struct dlm_lkb *lkb;
- void (*cast) (long param);
- void (*bast) (long param, int mode);
+ void (*cast) (void *astparam);
+ void (*bast) (void *astparam, int mode);
int type = 0, found, bmode;
for (;;) {
if (!found)
break;
- cast = lkb->lkb_astaddr;
- bast = lkb->lkb_bastaddr;
+ cast = lkb->lkb_astfn;
+ bast = lkb->lkb_bastfn;
bmode = lkb->lkb_bastmode;
if ((type & AST_COMP) && cast)
},
};
-int dlm_config_init(void)
+int __init dlm_config_init(void)
{
config_group_init(&clusters_root.subsys.su_group);
mutex_init(&clusters_root.subsys.su_mutex);
static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *r)
{
- struct dlm_user_args *ua;
unsigned int waiting = 0;
uint64_t xid = 0;
if (lkb->lkb_flags & DLM_IFL_USER) {
- ua = (struct dlm_user_args *) lkb->lkb_astparam;
- if (ua)
- xid = ua->xid;
+ if (lkb->lkb_ua)
+ xid = lkb->lkb_ua->xid;
}
if (lkb->lkb_timestamp)
debugfs_remove(ls->ls_debug_locks_dentry);
}
-int dlm_register_debugfs(void)
+int __init dlm_register_debugfs(void)
{
mutex_init(&debug_buf_lock);
dlm_root = debugfs_create_dir("dlm", NULL);
last_len = 0;
for (;;) {
+ int left;
error = dlm_recovery_stopped(ls);
if (error)
goto out_free;
* pick namelen/name pairs out of received buffer
*/
- b = ls->ls_recover_buf + sizeof(struct dlm_rcom);
+ b = ls->ls_recover_buf->rc_buf;
+ left = ls->ls_recover_buf->rc_header.h_length;
+ left -= sizeof(struct dlm_rcom);
for (;;) {
- memcpy(&namelen, b, sizeof(uint16_t));
- namelen = be16_to_cpu(namelen);
- b += sizeof(uint16_t);
+ __be16 v;
+
+ error = -EINVAL;
+ if (left < sizeof(__be16))
+ goto out_free;
+
+ memcpy(&v, b, sizeof(__be16));
+ namelen = be16_to_cpu(v);
+ b += sizeof(__be16);
+ left -= sizeof(__be16);
/* namelen of 0xFFFFF marks end of names for
this node; namelen of 0 marks end of the
if (!namelen)
break;
+ if (namelen > left)
+ goto out_free;
+
+ if (namelen > DLM_RESNAME_MAXLEN)
+ goto out_free;
+
error = -ENOMEM;
de = get_free_de(ls, namelen);
if (!de)
memcpy(de->name, b, namelen);
memcpy(last_name, b, namelen);
b += namelen;
+ left -= namelen;
add_entry_to_hash(ls, de);
count++;
write_unlock(&ls->ls_dirtbl[bucket].lock);
+ if (namelen > DLM_RESNAME_MAXLEN)
+ return -EINVAL;
+
de = kzalloc(sizeof(struct dlm_direntry) + namelen, GFP_KERNEL);
if (!de)
return -ENOMEM;
} \
}
-#define DLM_FAKE_USER_AST ERR_PTR(-EINVAL)
-
struct dlm_direntry {
struct list_head list;
struct dlm_args {
uint32_t flags;
- void *astaddr;
- long astparam;
- void *bastaddr;
+ void (*astfn) (void *astparam);
+ void *astparam;
+ void (*bastfn) (void *astparam, int mode);
int mode;
struct dlm_lksb *lksb;
unsigned long timeout;
char *lkb_lvbptr;
struct dlm_lksb *lkb_lksb; /* caller's status block */
- void *lkb_astaddr; /* caller's ast function */
- void *lkb_bastaddr; /* caller's bast function */
- long lkb_astparam; /* caller's ast arg */
+ void (*lkb_astfn) (void *astparam);
+ void (*lkb_bastfn) (void *astparam, int mode);
+ union {
+ void *lkb_astparam; /* caller's ast arg */
+ struct dlm_user_args *lkb_ua;
+ };
};
char rc_buf[0];
};
+union dlm_packet {
+ struct dlm_header header; /* common to other two */
+ struct dlm_message message;
+ struct dlm_rcom rcom;
+};
+
struct rcom_config {
- uint32_t rf_lvblen;
- uint32_t rf_lsflags;
- uint64_t rf_unused;
+ __le32 rf_lvblen;
+ __le32 rf_lsflags;
+ __le64 rf_unused;
};
struct rcom_lock {
- uint32_t rl_ownpid;
- uint32_t rl_lkid;
- uint32_t rl_remid;
- uint32_t rl_parent_lkid;
- uint32_t rl_parent_remid;
- uint32_t rl_exflags;
- uint32_t rl_flags;
- uint32_t rl_lvbseq;
- int rl_result;
+ __le32 rl_ownpid;
+ __le32 rl_lkid;
+ __le32 rl_remid;
+ __le32 rl_parent_lkid;
+ __le32 rl_parent_remid;
+ __le32 rl_exflags;
+ __le32 rl_flags;
+ __le32 rl_lvbseq;
+ __le32 rl_result;
int8_t rl_rqmode;
int8_t rl_grmode;
int8_t rl_status;
int8_t rl_asts;
- uint16_t rl_wait_type;
- uint16_t rl_namelen;
+ __le16 rl_wait_type;
+ __le16 rl_namelen;
char rl_name[DLM_RESNAME_MAXLEN];
char rl_lvb[0];
};
struct rw_semaphore ls_recv_active; /* block dlm_recv */
struct list_head ls_requestqueue;/* queue remote requests */
struct mutex ls_requestqueue_mutex;
- char *ls_recover_buf;
+ struct dlm_rcom *ls_recover_buf;
int ls_recover_nodeid; /* for debugging */
uint64_t ls_rcom_seq;
spinlock_t ls_rcom_spin;
{
struct dlm_rsb *r, *tmp;
uint32_t hash, bucket;
- int error = 0;
+ int error = -EINVAL;
+
+ if (namelen > DLM_RESNAME_MAXLEN)
+ goto out;
if (dlm_no_directory(ls))
flags |= R_CREATE;
+ error = 0;
hash = jhash(name, namelen, 0);
bucket = hash & (ls->ls_rsbtbl_size - 1);
b = dlm_lvb_operations[lkb->lkb_grmode + 1][lkb->lkb_rqmode + 1];
if (b == 1) {
int len = receive_extralen(ms);
+ if (len > DLM_RESNAME_MAXLEN)
+ len = DLM_RESNAME_MAXLEN;
memcpy(lkb->lkb_lvbptr, ms->m_extra, len);
lkb->lkb_lvbseq = ms->m_lvbseq;
}
*/
list_for_each_entry_safe(lkb, s, &r->res_grantqueue, lkb_statequeue) {
- if (lkb->lkb_bastaddr && lock_requires_bast(lkb, high, cw)) {
+ if (lkb->lkb_bastfn && lock_requires_bast(lkb, high, cw)) {
if (cw && high == DLM_LOCK_PR)
queue_bast(r, lkb, DLM_LOCK_CW);
else
struct dlm_lkb *gr;
list_for_each_entry(gr, head, lkb_statequeue) {
- if (gr->lkb_bastaddr && modes_require_bast(gr, lkb)) {
+ if (gr->lkb_bastfn && modes_require_bast(gr, lkb)) {
queue_bast(r, gr, lkb->lkb_rqmode);
gr->lkb_highbast = lkb->lkb_rqmode;
}
}
static int set_lock_args(int mode, struct dlm_lksb *lksb, uint32_t flags,
- int namelen, unsigned long timeout_cs, void *ast,
- void *astarg, void *bast, struct dlm_args *args)
+ int namelen, unsigned long timeout_cs,
+ void (*ast) (void *astparam),
+ void *astparam,
+ void (*bast) (void *astparam, int mode),
+ struct dlm_args *args)
{
int rv = -EINVAL;
an active lkb cannot be modified before locking the rsb */
args->flags = flags;
- args->astaddr = ast;
- args->astparam = (long) astarg;
- args->bastaddr = bast;
+ args->astfn = ast;
+ args->astparam = astparam;
+ args->bastfn = bast;
args->timeout = timeout_cs;
args->mode = mode;
args->lksb = lksb;
return -EINVAL;
args->flags = flags;
- args->astparam = (long) astarg;
+ args->astparam = astarg;
return 0;
}
lkb->lkb_exflags = args->flags;
lkb->lkb_sbflags = 0;
- lkb->lkb_astaddr = args->astaddr;
+ lkb->lkb_astfn = args->astfn;
lkb->lkb_astparam = args->astparam;
- lkb->lkb_bastaddr = args->bastaddr;
+ lkb->lkb_bastfn = args->bastfn;
lkb->lkb_rqmode = args->mode;
lkb->lkb_lksb = args->lksb;
lkb->lkb_lvbptr = args->lksb->sb_lvbptr;
/* m_result and m_bastmode are set from function args,
not from lkb fields */
- if (lkb->lkb_bastaddr)
+ if (lkb->lkb_bastfn)
ms->m_asts |= AST_BAST;
- if (lkb->lkb_astaddr)
+ if (lkb->lkb_astfn)
ms->m_asts |= AST_COMP;
/* compare with switch in create_message; send_remove() doesn't
if (!lkb->lkb_lvbptr)
return -ENOMEM;
len = receive_extralen(ms);
+ if (len > DLM_RESNAME_MAXLEN)
+ len = DLM_RESNAME_MAXLEN;
memcpy(lkb->lkb_lvbptr, ms->m_extra, len);
}
return 0;
}
+static void fake_bastfn(void *astparam, int mode)
+{
+ log_print("fake_bastfn should not be called");
+}
+
+static void fake_astfn(void *astparam)
+{
+ log_print("fake_astfn should not be called");
+}
+
static int receive_request_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
struct dlm_message *ms)
{
lkb->lkb_remid = ms->m_lkid;
lkb->lkb_grmode = DLM_LOCK_IV;
lkb->lkb_rqmode = ms->m_rqmode;
- lkb->lkb_bastaddr = (void *) (long) (ms->m_asts & AST_BAST);
- lkb->lkb_astaddr = (void *) (long) (ms->m_asts & AST_COMP);
+
+ lkb->lkb_bastfn = (ms->m_asts & AST_BAST) ? &fake_bastfn : NULL;
+ lkb->lkb_astfn = (ms->m_asts & AST_COMP) ? &fake_astfn : NULL;
if (lkb->lkb_exflags & DLM_LKF_VALBLK) {
/* lkb was just created so there won't be an lvb yet */
int nodeid)
{
if (dlm_locking_stopped(ls)) {
- dlm_add_requestqueue(ls, nodeid, (struct dlm_header *) ms);
+ dlm_add_requestqueue(ls, nodeid, ms);
} else {
dlm_wait_requestqueue(ls);
_receive_message(ls, ms);
standard locking activity) or an RCOM (recovery message sent as part of
lockspace recovery). */
-void dlm_receive_buffer(struct dlm_header *hd, int nodeid)
+void dlm_receive_buffer(union dlm_packet *p, int nodeid)
{
- struct dlm_message *ms = (struct dlm_message *) hd;
- struct dlm_rcom *rc = (struct dlm_rcom *) hd;
+ struct dlm_header *hd = &p->header;
struct dlm_ls *ls;
int type = 0;
switch (hd->h_cmd) {
case DLM_MSG:
- dlm_message_in(ms);
- type = ms->m_type;
+ dlm_message_in(&p->message);
+ type = p->message.m_type;
break;
case DLM_RCOM:
- dlm_rcom_in(rc);
- type = rc->rc_type;
+ dlm_rcom_in(&p->rcom);
+ type = p->rcom.rc_type;
break;
default:
log_print("invalid h_cmd %d from %u", hd->h_cmd, nodeid);
hd->h_lockspace, nodeid, hd->h_cmd, type);
if (hd->h_cmd == DLM_RCOM && type == DLM_RCOM_STATUS)
- dlm_send_ls_not_ready(nodeid, rc);
+ dlm_send_ls_not_ready(nodeid, &p->rcom);
return;
}
down_read(&ls->ls_recv_active);
if (hd->h_cmd == DLM_MSG)
- dlm_receive_message(ls, ms, nodeid);
+ dlm_receive_message(ls, &p->message, nodeid);
else
- dlm_receive_rcom(ls, rc, nodeid);
+ dlm_receive_rcom(ls, &p->rcom, nodeid);
up_read(&ls->ls_recv_active);
dlm_put_lockspace(ls);
return NULL;
}
+/* needs at least dlm_rcom + rcom_lock */
static int receive_rcom_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb,
struct dlm_rsb *r, struct dlm_rcom *rc)
{
struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf;
- int lvblen;
lkb->lkb_nodeid = rc->rc_header.h_nodeid;
- lkb->lkb_ownpid = rl->rl_ownpid;
- lkb->lkb_remid = rl->rl_lkid;
- lkb->lkb_exflags = rl->rl_exflags;
- lkb->lkb_flags = rl->rl_flags & 0x0000FFFF;
+ lkb->lkb_ownpid = le32_to_cpu(rl->rl_ownpid);
+ lkb->lkb_remid = le32_to_cpu(rl->rl_lkid);
+ lkb->lkb_exflags = le32_to_cpu(rl->rl_exflags);
+ lkb->lkb_flags = le32_to_cpu(rl->rl_flags) & 0x0000FFFF;
lkb->lkb_flags |= DLM_IFL_MSTCPY;
- lkb->lkb_lvbseq = rl->rl_lvbseq;
+ lkb->lkb_lvbseq = le32_to_cpu(rl->rl_lvbseq);
lkb->lkb_rqmode = rl->rl_rqmode;
lkb->lkb_grmode = rl->rl_grmode;
/* don't set lkb_status because add_lkb wants to itself */
- lkb->lkb_bastaddr = (void *) (long) (rl->rl_asts & AST_BAST);
- lkb->lkb_astaddr = (void *) (long) (rl->rl_asts & AST_COMP);
+ lkb->lkb_bastfn = (rl->rl_asts & AST_BAST) ? &fake_bastfn : NULL;
+ lkb->lkb_astfn = (rl->rl_asts & AST_COMP) ? &fake_astfn : NULL;
if (lkb->lkb_exflags & DLM_LKF_VALBLK) {
+ int lvblen = rc->rc_header.h_length - sizeof(struct dlm_rcom) -
+ sizeof(struct rcom_lock);
+ if (lvblen > ls->ls_lvblen)
+ return -EINVAL;
lkb->lkb_lvbptr = dlm_allocate_lvb(ls);
if (!lkb->lkb_lvbptr)
return -ENOMEM;
- lvblen = rc->rc_header.h_length - sizeof(struct dlm_rcom) -
- sizeof(struct rcom_lock);
memcpy(lkb->lkb_lvbptr, rl->rl_lvb, lvblen);
}
The real granted mode of these converting locks cannot be determined
until all locks have been rebuilt on the rsb (recover_conversion) */
- if (rl->rl_wait_type == DLM_MSG_CONVERT && middle_conversion(lkb)) {
+ if (rl->rl_wait_type == cpu_to_le16(DLM_MSG_CONVERT) &&
+ middle_conversion(lkb)) {
rl->rl_status = DLM_LKSTS_CONVERT;
lkb->lkb_grmode = DLM_LOCK_IV;
rsb_set_flag(r, RSB_RECOVER_CONVERT);
the given values and send back our lkid. We send back our lkid by sending
back the rcom_lock struct we got but with the remid field filled in. */
+/* needs at least dlm_rcom + rcom_lock */
int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
{
struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf;
goto out;
}
- error = find_rsb(ls, rl->rl_name, rl->rl_namelen, R_MASTER, &r);
+ error = find_rsb(ls, rl->rl_name, le16_to_cpu(rl->rl_namelen),
+ R_MASTER, &r);
if (error)
goto out;
lock_rsb(r);
- lkb = search_remid(r, rc->rc_header.h_nodeid, rl->rl_lkid);
+ lkb = search_remid(r, rc->rc_header.h_nodeid, le32_to_cpu(rl->rl_lkid));
if (lkb) {
error = -EEXIST;
goto out_remid;
out_remid:
/* this is the new value returned to the lock holder for
saving in its process-copy lkb */
- rl->rl_remid = lkb->lkb_id;
+ rl->rl_remid = cpu_to_le32(lkb->lkb_id);
out_unlock:
unlock_rsb(r);
put_rsb(r);
out:
if (error)
- log_debug(ls, "recover_master_copy %d %x", error, rl->rl_lkid);
- rl->rl_result = error;
+ log_debug(ls, "recover_master_copy %d %x", error,
+ le32_to_cpu(rl->rl_lkid));
+ rl->rl_result = cpu_to_le32(error);
return error;
}
+/* needs at least dlm_rcom + rcom_lock */
int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc)
{
struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf;
struct dlm_lkb *lkb;
int error;
- error = find_lkb(ls, rl->rl_lkid, &lkb);
+ error = find_lkb(ls, le32_to_cpu(rl->rl_lkid), &lkb);
if (error) {
- log_error(ls, "recover_process_copy no lkid %x", rl->rl_lkid);
+ log_error(ls, "recover_process_copy no lkid %x",
+ le32_to_cpu(rl->rl_lkid));
return error;
}
DLM_ASSERT(is_process_copy(lkb), dlm_print_lkb(lkb););
- error = rl->rl_result;
+ error = le32_to_cpu(rl->rl_result);
r = lkb->lkb_resource;
hold_rsb(r);
log_debug(ls, "master copy exists %x", lkb->lkb_id);
/* fall through */
case 0:
- lkb->lkb_remid = rl->rl_remid;
+ lkb->lkb_remid = le32_to_cpu(rl->rl_remid);
break;
default:
log_error(ls, "dlm_recover_process_copy unknown error %d %x",
lock and that lkb_astparam is the dlm_user_args structure. */
error = set_lock_args(mode, &ua->lksb, flags, namelen, timeout_cs,
- DLM_FAKE_USER_AST, ua, DLM_FAKE_USER_AST, &args);
+ fake_astfn, ua, fake_bastfn, &args);
lkb->lkb_flags |= DLM_IFL_USER;
ua->old_mode = DLM_LOCK_IV;
/* user can change the params on its lock when it converts it, or
add an lvb that didn't exist before */
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (flags & DLM_LKF_VALBLK && !ua->lksb.sb_lvbptr) {
ua->lksb.sb_lvbptr = kzalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
ua->old_mode = lkb->lkb_grmode;
error = set_lock_args(mode, &ua->lksb, flags, 0, timeout_cs,
- DLM_FAKE_USER_AST, ua, DLM_FAKE_USER_AST, &args);
+ fake_astfn, ua, fake_bastfn, &args);
if (error)
goto out_put;
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (lvb_in && ua->lksb.sb_lvbptr)
memcpy(ua->lksb.sb_lvbptr, lvb_in, DLM_USER_LVB_LEN);
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (ua_tmp->castparam)
ua->castparam = ua_tmp->castparam;
ua->user_lksb = ua_tmp->user_lksb;
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
error = set_unlock_args(flags, ua, &args);
if (error)
static int orphan_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
{
- struct dlm_user_args *ua = (struct dlm_user_args *)lkb->lkb_astparam;
struct dlm_args args;
int error;
list_add_tail(&lkb->lkb_ownqueue, &ls->ls_orphans);
mutex_unlock(&ls->ls_orphans_mutex);
- set_unlock_args(0, ua, &args);
+ set_unlock_args(0, lkb->lkb_ua, &args);
error = cancel_lock(ls, lkb, &args);
if (error == -DLM_ECANCEL)
static int unlock_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
{
- struct dlm_user_args *ua = (struct dlm_user_args *)lkb->lkb_astparam;
struct dlm_args args;
int error;
- set_unlock_args(DLM_LKF_FORCEUNLOCK, ua, &args);
+ set_unlock_args(DLM_LKF_FORCEUNLOCK, lkb->lkb_ua, &args);
error = unlock_lock(ls, lkb, &args);
if (error == -DLM_EUNLOCK)
void dlm_dump_rsb(struct dlm_rsb *r);
void dlm_print_lkb(struct dlm_lkb *lkb);
void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
-void dlm_receive_buffer(struct dlm_header *hd, int nodeid);
+void dlm_receive_buffer(union dlm_packet *p, int nodeid);
int dlm_modes_compat(int mode1, int mode2);
void dlm_put_rsb(struct dlm_rsb *r);
void dlm_hold_rsb(struct dlm_rsb *r);
}
-int dlm_lockspace_init(void)
+int __init dlm_lockspace_init(void)
{
ls_count = 0;
mutex_init(&ls_lock);
static struct kmem_cache *lkb_cache;
-int dlm_memory_init(void)
+int __init dlm_memory_init(void)
{
int ret = 0;
{
if (lkb->lkb_flags & DLM_IFL_USER) {
struct dlm_user_args *ua;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (ua) {
if (ua->lksb.sb_lvbptr)
kfree(ua->lksb.sb_lvbptr);
union {
unsigned char __buf[DLM_INBUF_LEN];
/* this is to force proper alignment on some arches */
- struct dlm_header dlm;
+ union dlm_packet p;
} __tmp;
- struct dlm_header *msg = &__tmp.dlm;
+ union dlm_packet *p = &__tmp.p;
int ret = 0;
int err = 0;
uint16_t msglen;
message may wrap around the end of the buffer back to the
start, so we need to use a temp buffer and copy_from_cb. */
- copy_from_cb(msg, base, offset, sizeof(struct dlm_header),
+ copy_from_cb(p, base, offset, sizeof(struct dlm_header),
limit);
- msglen = le16_to_cpu(msg->h_length);
- lockspace = msg->h_lockspace;
+ msglen = le16_to_cpu(p->header.h_length);
+ lockspace = p->header.h_lockspace;
err = -EINVAL;
if (msglen < sizeof(struct dlm_header))
break;
+ if (p->header.h_cmd == DLM_MSG) {
+ if (msglen < sizeof(struct dlm_message))
+ break;
+ } else {
+ if (msglen < sizeof(struct dlm_rcom))
+ break;
+ }
err = -E2BIG;
if (msglen > dlm_config.ci_buffer_size) {
log_print("message size %d from %d too big, buf len %d",
in the buffer on the stack (which should work for most
ordinary messages). */
- if (msglen > DLM_INBUF_LEN && msg == &__tmp.dlm) {
- msg = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);
- if (msg == NULL)
+ if (msglen > sizeof(__tmp) && p == &__tmp.p) {
+ p = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);
+ if (p == NULL)
return ret;
}
- copy_from_cb(msg, base, offset, msglen, limit);
+ copy_from_cb(p, base, offset, msglen, limit);
- BUG_ON(lockspace != msg->h_lockspace);
+ BUG_ON(lockspace != p->header.h_lockspace);
ret += msglen;
offset += msglen;
offset &= (limit - 1);
len -= msglen;
- dlm_receive_buffer(msg, nodeid);
+ dlm_receive_buffer(p, nodeid);
}
- if (msg != &__tmp.dlm)
- kfree(msg);
+ if (p != &__tmp.p)
+ kfree(p);
return err ? err : ret;
}
.doit = user_cmd,
};
-int dlm_netlink_init(void)
+int __init dlm_netlink_init(void)
{
int rv;
return rv;
}
-void dlm_netlink_exit(void)
+void __exit dlm_netlink_exit(void)
{
genl_unregister_ops(&family, &dlm_nl_ops);
genl_unregister_family(&family);
static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
{
struct dlm_rsb *r = lkb->lkb_resource;
- struct dlm_user_args *ua = (struct dlm_user_args *) lkb->lkb_astparam;
memset(data, 0, sizeof(struct dlm_lock_data));
data->grmode = lkb->lkb_grmode;
data->rqmode = lkb->lkb_rqmode;
data->timestamp = lkb->lkb_timestamp;
- if (ua)
- data->xid = ua->xid;
+ if (lkb->lkb_ua)
+ data->xid = lkb->lkb_ua->xid;
if (r) {
data->lockspace_id = r->res_ls->ls_global_id;
data->resource_namelen = r->res_length;
static void make_config(struct dlm_ls *ls, struct rcom_config *rf)
{
- rf->rf_lvblen = ls->ls_lvblen;
- rf->rf_lsflags = ls->ls_exflags;
+ rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);
+ rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);
}
static int check_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
{
struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
+ size_t conf_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_config);
if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
log_error(ls, "version mismatch: %x nodeid %d: %x",
return -EPROTO;
}
- if (rf->rf_lvblen != ls->ls_lvblen ||
- rf->rf_lsflags != ls->ls_exflags) {
+ if (rc->rc_header.h_length < conf_size) {
+ log_error(ls, "config too short: %d nodeid %d",
+ rc->rc_header.h_length, nodeid);
+ return -EPROTO;
+ }
+
+ if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||
+ le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {
log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",
- ls->ls_lvblen, ls->ls_exflags,
- nodeid, rf->rf_lvblen, rf->rf_lsflags);
+ ls->ls_lvblen, ls->ls_exflags, nodeid,
+ le32_to_cpu(rf->rf_lvblen),
+ le32_to_cpu(rf->rf_lsflags));
return -EPROTO;
}
return 0;
ls->ls_recover_nodeid = nodeid;
if (nodeid == dlm_our_nodeid()) {
- rc = (struct dlm_rcom *) ls->ls_recover_buf;
+ rc = ls->ls_recover_buf;
rc->rc_result = dlm_recover_status(ls);
goto out;
}
if (error)
goto out;
- rc = (struct dlm_rcom *) ls->ls_recover_buf;
+ rc = ls->ls_recover_buf;
if (rc->rc_result == -ESRCH) {
/* we pretend the remote lockspace exists with 0 status */
{
struct dlm_rcom *rc;
struct dlm_mhandle *mh;
- int error = 0, len = sizeof(struct dlm_rcom);
+ int error = 0;
+ int max_size = dlm_config.ci_buffer_size - sizeof(struct dlm_rcom);
ls->ls_recover_nodeid = nodeid;
if (nodeid == dlm_our_nodeid()) {
dlm_copy_master_names(ls, last_name, last_len,
- ls->ls_recover_buf + len,
- dlm_config.ci_buffer_size - len, nodeid);
+ ls->ls_recover_buf->rc_buf,
+ max_size, nodeid);
goto out;
}
{
memset(rl, 0, sizeof(*rl));
- rl->rl_ownpid = lkb->lkb_ownpid;
- rl->rl_lkid = lkb->lkb_id;
- rl->rl_exflags = lkb->lkb_exflags;
- rl->rl_flags = lkb->lkb_flags;
- rl->rl_lvbseq = lkb->lkb_lvbseq;
+ rl->rl_ownpid = cpu_to_le32(lkb->lkb_ownpid);
+ rl->rl_lkid = cpu_to_le32(lkb->lkb_id);
+ rl->rl_exflags = cpu_to_le32(lkb->lkb_exflags);
+ rl->rl_flags = cpu_to_le32(lkb->lkb_flags);
+ rl->rl_lvbseq = cpu_to_le32(lkb->lkb_lvbseq);
rl->rl_rqmode = lkb->lkb_rqmode;
rl->rl_grmode = lkb->lkb_grmode;
rl->rl_status = lkb->lkb_status;
- rl->rl_wait_type = lkb->lkb_wait_type;
+ rl->rl_wait_type = cpu_to_le16(lkb->lkb_wait_type);
- if (lkb->lkb_bastaddr)
+ if (lkb->lkb_bastfn)
rl->rl_asts |= AST_BAST;
- if (lkb->lkb_astaddr)
+ if (lkb->lkb_astfn)
rl->rl_asts |= AST_COMP;
- rl->rl_namelen = r->res_length;
+ rl->rl_namelen = cpu_to_le16(r->res_length);
memcpy(rl->rl_name, r->res_name, r->res_length);
/* FIXME: might we have an lvb without DLM_LKF_VALBLK set ?
return error;
}
+/* needs at least dlm_rcom + rcom_lock */
static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
struct dlm_rcom *rc;
rc->rc_result = -ESRCH;
rf = (struct rcom_config *) rc->rc_buf;
- rf->rf_lvblen = -1;
+ rf->rf_lvblen = cpu_to_le32(~0U);
dlm_rcom_out(rc);
dlm_lowcomms_commit_buffer(mh);
void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
{
+ int lock_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_lock);
+
if (dlm_recovery_stopped(ls) && (rc->rc_type != DLM_RCOM_STATUS)) {
log_debug(ls, "ignoring recovery message %x from %d",
rc->rc_type, nodeid);
break;
case DLM_RCOM_LOCK:
+ if (rc->rc_header.h_length < lock_size)
+ goto Eshort;
receive_rcom_lock(ls, rc);
break;
break;
case DLM_RCOM_LOCK_REPLY:
+ if (rc->rc_header.h_length < lock_size)
+ goto Eshort;
dlm_recover_process_copy(ls, rc);
break;
default:
log_error(ls, "receive_rcom bad type %d", rc->rc_type);
}
- out:
+out:
return;
+Eshort:
+ log_error(ls, "recovery message %x from %d is too short",
+ rc->rc_type, nodeid);
}
static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status)
{
- struct dlm_rcom *rc = (struct dlm_rcom *) ls->ls_recover_buf;
+ struct dlm_rcom *rc = ls->ls_recover_buf;
struct dlm_member *memb;
int error = 0, delay;
static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status)
{
- struct dlm_rcom *rc = (struct dlm_rcom *) ls->ls_recover_buf;
+ struct dlm_rcom *rc = ls->ls_recover_buf;
int error = 0, delay = 0, nodeid = ls->ls_low_nodeid;
for (;;) {
struct rq_entry {
struct list_head list;
int nodeid;
- char request[0];
+ struct dlm_message request;
};
/*
* lockspace is enabled on some while still suspended on others.
*/
-void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd)
+void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms)
{
struct rq_entry *e;
- int length = hd->h_length;
+ int length = ms->m_header.h_length - sizeof(struct dlm_message);
e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL);
if (!e) {
}
e->nodeid = nodeid;
- memcpy(e->request, hd, length);
+ memcpy(&e->request, ms, ms->m_header.h_length);
mutex_lock(&ls->ls_requestqueue_mutex);
list_add_tail(&e->list, &ls->ls_requestqueue);
e = list_entry(ls->ls_requestqueue.next, struct rq_entry, list);
mutex_unlock(&ls->ls_requestqueue_mutex);
- dlm_receive_message_saved(ls, (struct dlm_message *)e->request);
+ dlm_receive_message_saved(ls, &e->request);
mutex_lock(&ls->ls_requestqueue_mutex);
list_del(&e->list);
mutex_lock(&ls->ls_requestqueue_mutex);
list_for_each_entry_safe(e, safe, &ls->ls_requestqueue, list) {
- ms = (struct dlm_message *) e->request;
+ ms = &e->request;
if (purge_request(ls, ms, e->nodeid)) {
list_del(&e->list);
#ifndef __REQUESTQUEUE_DOT_H__
#define __REQUESTQUEUE_DOT_H__
-void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd);
+void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms);
int dlm_process_requestqueue(struct dlm_ls *ls);
void dlm_wait_requestqueue(struct dlm_ls *ls);
void dlm_purge_requestqueue(struct dlm_ls *ls);
static void compat_input(struct dlm_write_request *kb,
struct dlm_write_request32 *kb32,
- int max_namelen)
+ size_t count)
{
kb->version[0] = kb32->version[0];
kb->version[1] = kb32->version[1];
kb->cmd == DLM_USER_REMOVE_LOCKSPACE) {
kb->i.lspace.flags = kb32->i.lspace.flags;
kb->i.lspace.minor = kb32->i.lspace.minor;
- strcpy(kb->i.lspace.name, kb32->i.lspace.name);
+ memcpy(kb->i.lspace.name, kb32->i.lspace.name, count -
+ offsetof(struct dlm_write_request32, i.lspace.name));
} else if (kb->cmd == DLM_USER_PURGE) {
kb->i.purge.nodeid = kb32->i.purge.nodeid;
kb->i.purge.pid = kb32->i.purge.pid;
kb->i.lock.bastaddr = (void *)(long)kb32->i.lock.bastaddr;
kb->i.lock.lksb = (void *)(long)kb32->i.lock.lksb;
memcpy(kb->i.lock.lvb, kb32->i.lock.lvb, DLM_USER_LVB_LEN);
- if (kb->i.lock.namelen <= max_namelen)
- memcpy(kb->i.lock.name, kb32->i.lock.name,
- kb->i.lock.namelen);
- else
- kb->i.lock.namelen = max_namelen;
+ memcpy(kb->i.lock.name, kb32->i.lock.name, count -
+ offsetof(struct dlm_write_request32, i.lock.name));
}
}
if (lkb->lkb_flags & (DLM_IFL_ORPHAN | DLM_IFL_DEAD))
goto out;
- DLM_ASSERT(lkb->lkb_astparam, dlm_print_lkb(lkb););
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ DLM_ASSERT(lkb->lkb_ua, dlm_print_lkb(lkb););
+ ua = lkb->lkb_ua;
proc = ua->proc;
if (type == AST_BAST && ua->bastaddr == NULL)
#endif
return -EINVAL;
- kbuf = kmalloc(count, GFP_KERNEL);
+ kbuf = kzalloc(count + 1, GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
if (!kbuf->is64bit) {
struct dlm_write_request32 *k32buf;
k32buf = (struct dlm_write_request32 *)kbuf;
- kbuf = kmalloc(count + (sizeof(struct dlm_write_request) -
+ kbuf = kmalloc(count + 1 + (sizeof(struct dlm_write_request) -
sizeof(struct dlm_write_request32)), GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
if (proc)
set_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags);
- compat_input(kbuf, k32buf,
- count - sizeof(struct dlm_write_request32));
+ compat_input(kbuf, k32buf, count + 1);
kfree(k32buf);
}
#endif
{
struct dlm_user_proc *proc = file->private_data;
struct dlm_lkb *lkb;
- struct dlm_user_args *ua;
DECLARE_WAITQUEUE(wait, current);
int error, type=0, bmode=0, removed = 0;
}
spin_unlock(&proc->asts_spin);
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
- error = copy_result_to_user(ua,
+ error = copy_result_to_user(lkb->lkb_ua,
test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags),
type, bmode, buf, count);
.minor = MISC_DYNAMIC_MINOR,
};
-int dlm_user_init(void)
+int __init dlm_user_init(void)
{
int error;
ms->m_result = from_dlm_errno(le32_to_cpu(ms->m_result));
}
-static void rcom_lock_out(struct rcom_lock *rl)
-{
- rl->rl_ownpid = cpu_to_le32(rl->rl_ownpid);
- rl->rl_lkid = cpu_to_le32(rl->rl_lkid);
- rl->rl_remid = cpu_to_le32(rl->rl_remid);
- rl->rl_parent_lkid = cpu_to_le32(rl->rl_parent_lkid);
- rl->rl_parent_remid = cpu_to_le32(rl->rl_parent_remid);
- rl->rl_exflags = cpu_to_le32(rl->rl_exflags);
- rl->rl_flags = cpu_to_le32(rl->rl_flags);
- rl->rl_lvbseq = cpu_to_le32(rl->rl_lvbseq);
- rl->rl_result = cpu_to_le32(rl->rl_result);
- rl->rl_wait_type = cpu_to_le16(rl->rl_wait_type);
- rl->rl_namelen = cpu_to_le16(rl->rl_namelen);
-}
-
-static void rcom_lock_in(struct rcom_lock *rl)
-{
- rl->rl_ownpid = le32_to_cpu(rl->rl_ownpid);
- rl->rl_lkid = le32_to_cpu(rl->rl_lkid);
- rl->rl_remid = le32_to_cpu(rl->rl_remid);
- rl->rl_parent_lkid = le32_to_cpu(rl->rl_parent_lkid);
- rl->rl_parent_remid = le32_to_cpu(rl->rl_parent_remid);
- rl->rl_exflags = le32_to_cpu(rl->rl_exflags);
- rl->rl_flags = le32_to_cpu(rl->rl_flags);
- rl->rl_lvbseq = le32_to_cpu(rl->rl_lvbseq);
- rl->rl_result = le32_to_cpu(rl->rl_result);
- rl->rl_wait_type = le16_to_cpu(rl->rl_wait_type);
- rl->rl_namelen = le16_to_cpu(rl->rl_namelen);
-}
-
-static void rcom_config_out(struct rcom_config *rf)
-{
- rf->rf_lvblen = cpu_to_le32(rf->rf_lvblen);
- rf->rf_lsflags = cpu_to_le32(rf->rf_lsflags);
-}
-
-static void rcom_config_in(struct rcom_config *rf)
-{
- rf->rf_lvblen = le32_to_cpu(rf->rf_lvblen);
- rf->rf_lsflags = le32_to_cpu(rf->rf_lsflags);
-}
-
void dlm_rcom_out(struct dlm_rcom *rc)
{
- int type = rc->rc_type;
-
header_out(&rc->rc_header);
rc->rc_type = cpu_to_le32(rc->rc_type);
rc->rc_id = cpu_to_le64(rc->rc_id);
rc->rc_seq = cpu_to_le64(rc->rc_seq);
rc->rc_seq_reply = cpu_to_le64(rc->rc_seq_reply);
-
- if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY))
- rcom_lock_out((struct rcom_lock *) rc->rc_buf);
-
- else if (type == DLM_RCOM_STATUS_REPLY)
- rcom_config_out((struct rcom_config *) rc->rc_buf);
}
void dlm_rcom_in(struct dlm_rcom *rc)
{
- int type;
-
header_in(&rc->rc_header);
rc->rc_type = le32_to_cpu(rc->rc_type);
rc->rc_id = le64_to_cpu(rc->rc_id);
rc->rc_seq = le64_to_cpu(rc->rc_seq);
rc->rc_seq_reply = le64_to_cpu(rc->rc_seq_reply);
-
- type = rc->rc_type;
-
- if ((type == DLM_RCOM_LOCK) || (type == DLM_RCOM_LOCK_REPLY))
- rcom_lock_in((struct rcom_lock *) rc->rc_buf);
-
- else if (type == DLM_RCOM_STATUS_REPLY)
- rcom_config_in((struct rcom_config *) rc->rc_buf);
}
-
projects / linux-2.6-omap-h63xx.git / commitdiff