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path: root/fs/gfs2/locking/dlm/mount.c
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Diffstat (limited to 'fs/gfs2/locking/dlm/mount.c')
-rw-r--r--fs/gfs2/locking/dlm/mount.c276
1 files changed, 0 insertions, 276 deletions
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
deleted file mode 100644
index 1aa7eb6..0000000
--- a/fs/gfs2/locking/dlm/mount.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include "lock_dlm.h"
-
-const struct lm_lockops gdlm_ops;
-
-
-static struct gdlm_ls *init_gdlm(lm_callback_t cb, struct gfs2_sbd *sdp,
- int flags, char *table_name)
-{
- struct gdlm_ls *ls;
- char buf[256], *p;
-
- ls = kzalloc(sizeof(struct gdlm_ls), GFP_KERNEL);
- if (!ls)
- return NULL;
-
- ls->fscb = cb;
- ls->sdp = sdp;
- ls->fsflags = flags;
- spin_lock_init(&ls->async_lock);
- INIT_LIST_HEAD(&ls->delayed);
- INIT_LIST_HEAD(&ls->submit);
- init_waitqueue_head(&ls->thread_wait);
- init_waitqueue_head(&ls->wait_control);
- ls->jid = -1;
-
- strncpy(buf, table_name, 256);
- buf[255] = '\0';
-
- p = strchr(buf, ':');
- if (!p) {
- log_info("invalid table_name \"%s\"", table_name);
- kfree(ls);
- return NULL;
- }
- *p = '\0';
- p++;
-
- strncpy(ls->clustername, buf, GDLM_NAME_LEN);
- strncpy(ls->fsname, p, GDLM_NAME_LEN);
-
- return ls;
-}
-
-static int make_args(struct gdlm_ls *ls, char *data_arg, int *nodir)
-{
- char data[256];
- char *options, *x, *y;
- int error = 0;
-
- memset(data, 0, 256);
- strncpy(data, data_arg, 255);
-
- if (!strlen(data)) {
- log_error("no mount options, (u)mount helpers not installed");
- return -EINVAL;
- }
-
- for (options = data; (x = strsep(&options, ":")); ) {
- if (!*x)
- continue;
-
- y = strchr(x, '=');
- if (y)
- *y++ = 0;
-
- if (!strcmp(x, "jid")) {
- if (!y) {
- log_error("need argument to jid");
- error = -EINVAL;
- break;
- }
- sscanf(y, "%u", &ls->jid);
-
- } else if (!strcmp(x, "first")) {
- if (!y) {
- log_error("need argument to first");
- error = -EINVAL;
- break;
- }
- sscanf(y, "%u", &ls->first);
-
- } else if (!strcmp(x, "id")) {
- if (!y) {
- log_error("need argument to id");
- error = -EINVAL;
- break;
- }
- sscanf(y, "%u", &ls->id);
-
- } else if (!strcmp(x, "nodir")) {
- if (!y) {
- log_error("need argument to nodir");
- error = -EINVAL;
- break;
- }
- sscanf(y, "%u", nodir);
-
- } else {
- log_error("unkonwn option: %s", x);
- error = -EINVAL;
- break;
- }
- }
-
- return error;
-}
-
-static int gdlm_mount(char *table_name, char *host_data,
- lm_callback_t cb, void *cb_data,
- unsigned int min_lvb_size, int flags,
- struct lm_lockstruct *lockstruct,
- struct kobject *fskobj)
-{
- struct gdlm_ls *ls;
- int error = -ENOMEM, nodir = 0;
-
- if (min_lvb_size > GDLM_LVB_SIZE)
- goto out;
-
- ls = init_gdlm(cb, cb_data, flags, table_name);
- if (!ls)
- goto out;
-
- error = make_args(ls, host_data, &nodir);
- if (error)
- goto out;
-
- error = gdlm_init_threads(ls);
- if (error)
- goto out_free;
-
- error = gdlm_kobject_setup(ls, fskobj);
- if (error)
- goto out_thread;
-
- error = dlm_new_lockspace(ls->fsname, strlen(ls->fsname),
- &ls->dlm_lockspace,
- DLM_LSFL_FS | DLM_LSFL_NEWEXCL |
- (nodir ? DLM_LSFL_NODIR : 0),
- GDLM_LVB_SIZE);
- if (error) {
- log_error("dlm_new_lockspace error %d", error);
- goto out_kobj;
- }
-
- lockstruct->ls_jid = ls->jid;
- lockstruct->ls_first = ls->first;
- lockstruct->ls_lockspace = ls;
- lockstruct->ls_ops = &gdlm_ops;
- lockstruct->ls_flags = 0;
- lockstruct->ls_lvb_size = GDLM_LVB_SIZE;
- return 0;
-
-out_kobj:
- gdlm_kobject_release(ls);
-out_thread:
- gdlm_release_threads(ls);
-out_free:
- kfree(ls);
-out:
- return error;
-}
-
-static void gdlm_unmount(void *lockspace)
-{
- struct gdlm_ls *ls = lockspace;
-
- log_debug("unmount flags %lx", ls->flags);
-
- /* FIXME: serialize unmount and withdraw in case they
- happen at once. Also, if unmount follows withdraw,
- wait for withdraw to finish. */
-
- if (test_bit(DFL_WITHDRAW, &ls->flags))
- goto out;
-
- gdlm_kobject_release(ls);
- dlm_release_lockspace(ls->dlm_lockspace, 2);
- gdlm_release_threads(ls);
- BUG_ON(ls->all_locks_count);
-out:
- kfree(ls);
-}
-
-static void gdlm_recovery_done(void *lockspace, unsigned int jid,
- unsigned int message)
-{
- char env_jid[20];
- char env_status[20];
- char *envp[] = { env_jid, env_status, NULL };
- struct gdlm_ls *ls = lockspace;
- ls->recover_jid_done = jid;
- ls->recover_jid_status = message;
- sprintf(env_jid, "JID=%d", jid);
- sprintf(env_status, "RECOVERY=%s",
- message == LM_RD_SUCCESS ? "Done" : "Failed");
- kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
-}
-
-static void gdlm_others_may_mount(void *lockspace)
-{
- char *message = "FIRSTMOUNT=Done";
- char *envp[] = { message, NULL };
- struct gdlm_ls *ls = lockspace;
- ls->first_done = 1;
- kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
-}
-
-/* Userspace gets the offline uevent, blocks new gfs locks on
- other mounters, and lets us know (sets WITHDRAW flag). Then,
- userspace leaves the mount group while we leave the lockspace. */
-
-static void gdlm_withdraw(void *lockspace)
-{
- struct gdlm_ls *ls = lockspace;
-
- kobject_uevent(&ls->kobj, KOBJ_OFFLINE);
-
- wait_event_interruptible(ls->wait_control,
- test_bit(DFL_WITHDRAW, &ls->flags));
-
- dlm_release_lockspace(ls->dlm_lockspace, 2);
- gdlm_release_threads(ls);
- gdlm_kobject_release(ls);
-}
-
-static int gdlm_plock(void *lockspace, struct lm_lockname *name,
- struct file *file, int cmd, struct file_lock *fl)
-{
- struct gdlm_ls *ls = lockspace;
- return dlm_posix_lock(ls->dlm_lockspace, name->ln_number, file, cmd, fl);
-}
-
-static int gdlm_punlock(void *lockspace, struct lm_lockname *name,
- struct file *file, struct file_lock *fl)
-{
- struct gdlm_ls *ls = lockspace;
- return dlm_posix_unlock(ls->dlm_lockspace, name->ln_number, file, fl);
-}
-
-static int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
- struct file *file, struct file_lock *fl)
-{
- struct gdlm_ls *ls = lockspace;
- return dlm_posix_get(ls->dlm_lockspace, name->ln_number, file, fl);
-}
-
-const struct lm_lockops gdlm_ops = {
- .lm_proto_name = "lock_dlm",
- .lm_mount = gdlm_mount,
- .lm_others_may_mount = gdlm_others_may_mount,
- .lm_unmount = gdlm_unmount,
- .lm_withdraw = gdlm_withdraw,
- .lm_get_lock = gdlm_get_lock,
- .lm_put_lock = gdlm_put_lock,
- .lm_lock = gdlm_lock,
- .lm_unlock = gdlm_unlock,
- .lm_plock = gdlm_plock,
- .lm_punlock = gdlm_punlock,
- .lm_plock_get = gdlm_plock_get,
- .lm_cancel = gdlm_cancel,
- .lm_hold_lvb = gdlm_hold_lvb,
- .lm_unhold_lvb = gdlm_unhold_lvb,
- .lm_recovery_done = gdlm_recovery_done,
- .lm_owner = THIS_MODULE,
-};
-
generated by cgit v0.10.2 at 2024-11-19 06:17:27 (GMT)