Commit a01ee165 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

Pull exofs updates from Boaz Harrosh:
 "Just a couple of patches.  The first is a BUG fix destined for stable
  which missed the 3.4-rc7 Kernel.  The second is just a fixture
  addition so exofs is able to be better exported as a cluster file
  system via pNFS."

* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  exofs: Add SYSFS info for autologin/pNFS export
  exofs: Fix CRASH on very early IO errors.
parents d766023e 8b56a30c
......@@ -16,5 +16,5 @@
libore-y := ore.o ore_raid.o
obj-$(CONFIG_ORE) += libore.o
exofs-y := inode.o file.o symlink.o namei.o dir.o super.o
exofs-y := inode.o file.o symlink.o namei.o dir.o super.o sys.o
obj-$(CONFIG_EXOFS_FS) += exofs.o
......@@ -56,6 +56,9 @@
struct exofs_dev {
struct ore_dev ored;
unsigned did;
unsigned urilen;
uint8_t *uri;
struct kobject ed_kobj;
};
/*
* our extension to the in-memory superblock
......@@ -73,6 +76,7 @@ struct exofs_sb_info {
struct ore_layout layout; /* Default files layout */
struct ore_comp one_comp; /* id & cred of partition id=0*/
struct ore_components oc; /* comps for the partition */
struct kobject s_kobj; /* holds per-sbi kobject */
};
/*
......@@ -176,6 +180,16 @@ void exofs_make_credential(u8 cred_a[OSD_CAP_LEN],
const struct osd_obj_id *obj);
int exofs_sbi_write_stats(struct exofs_sb_info *sbi);
/* sys.c */
int exofs_sysfs_init(void);
void exofs_sysfs_uninit(void);
int exofs_sysfs_sb_add(struct exofs_sb_info *sbi,
struct exofs_dt_device_info *dt_dev);
void exofs_sysfs_sb_del(struct exofs_sb_info *sbi);
int exofs_sysfs_odev_add(struct exofs_dev *edev,
struct exofs_sb_info *sbi);
void exofs_sysfs_dbg_print(void);
/*********************
* operation vectors *
*********************/
......
......@@ -472,6 +472,7 @@ static void exofs_put_super(struct super_block *sb)
_exofs_print_device("Unmounting", NULL, ore_comp_dev(&sbi->oc, 0),
sbi->one_comp.obj.partition);
exofs_sysfs_sb_del(sbi);
bdi_destroy(&sbi->bdi);
exofs_free_sbi(sbi);
sb->s_fs_info = NULL;
......@@ -632,6 +633,12 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info *sbi,
memcpy(&sbi->oc.ods[numdevs], &sbi->oc.ods[0],
(numdevs - 1) * sizeof(sbi->oc.ods[0]));
/* create sysfs subdir under which we put the device table
* And cluster layout. A Superblock is identified by the string:
* "dev[0].osdname"_"pid"
*/
exofs_sysfs_sb_add(sbi, &dt->dt_dev_table[0]);
for (i = 0; i < numdevs; i++) {
struct exofs_fscb fscb;
struct osd_dev_info odi;
......@@ -657,6 +664,7 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info *sbi,
eds[i].ored.od = fscb_od;
++sbi->oc.numdevs;
fscb_od = NULL;
exofs_sysfs_odev_add(&eds[i], sbi);
continue;
}
......@@ -682,6 +690,7 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info *sbi,
odi.osdname);
goto out;
}
exofs_sysfs_odev_add(&eds[i], sbi);
/* TODO: verify other information is correct and FS-uuid
* matches. Benny what did you say about device table
......@@ -745,7 +754,6 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
sbi->one_comp.obj.partition = opts->pid;
sbi->one_comp.obj.id = 0;
exofs_make_credential(sbi->one_comp.cred, &sbi->one_comp.obj);
sbi->oc.numdevs = 1;
sbi->oc.single_comp = EC_SINGLE_COMP;
sbi->oc.comps = &sbi->one_comp;
......@@ -804,6 +812,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
ore_comp_set_dev(&sbi->oc, 0, od);
sbi->oc.numdevs = 1;
}
__sbi_read_stats(sbi);
......@@ -844,6 +853,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
exofs_sysfs_dbg_print();
_exofs_print_device("Mounting", opts->dev_name,
ore_comp_dev(&sbi->oc, 0),
sbi->one_comp.obj.partition);
......@@ -1023,6 +1033,9 @@ static int __init init_exofs(void)
if (err)
goto out_d;
/* We don't fail if sysfs creation failed */
exofs_sysfs_init();
return 0;
out_d:
destroy_inodecache();
......@@ -1032,6 +1045,7 @@ out:
static void __exit exit_exofs(void)
{
exofs_sysfs_uninit();
unregister_filesystem(&exofs_type);
destroy_inodecache();
}
......
/*
* Copyright (C) 2012
* Sachin Bhamare <sbhamare@panasas.com>
* Boaz Harrosh <bharrosh@panasas.com>
*
* This file is part of exofs.
*
* exofs is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License 2 as published by
* the Free Software Foundation.
*
* exofs is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with exofs; if not, write to the:
* Free Software Foundation <licensing@fsf.org>
*/
#include <linux/kobject.h>
#include <linux/device.h>
#include "exofs.h"
struct odev_attr {
struct attribute attr;
ssize_t (*show)(struct exofs_dev *, char *);
ssize_t (*store)(struct exofs_dev *, const char *, size_t);
};
static ssize_t odev_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct exofs_dev *edp = container_of(kobj, struct exofs_dev, ed_kobj);
struct odev_attr *a = container_of(attr, struct odev_attr, attr);
return a->show ? a->show(edp, buf) : 0;
}
static ssize_t odev_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t len)
{
struct exofs_dev *edp = container_of(kobj, struct exofs_dev, ed_kobj);
struct odev_attr *a = container_of(attr, struct odev_attr, attr);
return a->store ? a->store(edp, buf, len) : len;
}
static const struct sysfs_ops odev_attr_ops = {
.show = odev_attr_show,
.store = odev_attr_store,
};
static struct kset *exofs_kset;
static ssize_t osdname_show(struct exofs_dev *edp, char *buf)
{
struct osd_dev *odev = edp->ored.od;
const struct osd_dev_info *odi = osduld_device_info(odev);
return snprintf(buf, odi->osdname_len + 1, "%s", odi->osdname);
}
static ssize_t systemid_show(struct exofs_dev *edp, char *buf)
{
struct osd_dev *odev = edp->ored.od;
const struct osd_dev_info *odi = osduld_device_info(odev);
memcpy(buf, odi->systemid, odi->systemid_len);
return odi->systemid_len;
}
static ssize_t uri_show(struct exofs_dev *edp, char *buf)
{
return snprintf(buf, edp->urilen, "%s", edp->uri);
}
static ssize_t uri_store(struct exofs_dev *edp, const char *buf, size_t len)
{
edp->urilen = strlen(buf) + 1;
edp->uri = krealloc(edp->uri, edp->urilen, GFP_KERNEL);
strncpy(edp->uri, buf, edp->urilen);
return edp->urilen;
}
#define OSD_ATTR(name, mode, show, store) \
static struct odev_attr odev_attr_##name = \
__ATTR(name, mode, show, store)
OSD_ATTR(osdname, S_IRUGO, osdname_show, NULL);
OSD_ATTR(systemid, S_IRUGO, systemid_show, NULL);
OSD_ATTR(uri, S_IRWXU, uri_show, uri_store);
static struct attribute *odev_attrs[] = {
&odev_attr_osdname.attr,
&odev_attr_systemid.attr,
&odev_attr_uri.attr,
NULL,
};
static struct kobj_type odev_ktype = {
.default_attrs = odev_attrs,
.sysfs_ops = &odev_attr_ops,
};
static struct kobj_type uuid_ktype = {
};
void exofs_sysfs_dbg_print()
{
#ifdef CONFIG_EXOFS_DEBUG
struct kobject *k_name, *k_tmp;
list_for_each_entry_safe(k_name, k_tmp, &exofs_kset->list, entry) {
printk(KERN_INFO "%s: name %s ref %d\n",
__func__, kobject_name(k_name),
(int)atomic_read(&k_name->kref.refcount));
}
#endif
}
/*
* This function removes all kobjects under exofs_kset
* At the end of it, exofs_kset kobject will have a refcount
* of 1 which gets decremented only on exofs module unload
*/
void exofs_sysfs_sb_del(struct exofs_sb_info *sbi)
{
struct kobject *k_name, *k_tmp;
struct kobject *s_kobj = &sbi->s_kobj;
list_for_each_entry_safe(k_name, k_tmp, &exofs_kset->list, entry) {
/* Remove all that are children of this SBI */
if (k_name->parent == s_kobj)
kobject_put(k_name);
}
kobject_put(s_kobj);
}
/*
* This function creates sysfs entries to hold the current exofs cluster
* instance (uniquely identified by osdname,pid tuple).
* This function gets called once per exofs mount instance.
*/
int exofs_sysfs_sb_add(struct exofs_sb_info *sbi,
struct exofs_dt_device_info *dt_dev)
{
struct kobject *s_kobj;
int retval = 0;
uint64_t pid = sbi->one_comp.obj.partition;
/* allocate new uuid dirent */
s_kobj = &sbi->s_kobj;
s_kobj->kset = exofs_kset;
retval = kobject_init_and_add(s_kobj, &uuid_ktype,
&exofs_kset->kobj, "%s_%llx", dt_dev->osdname, pid);
if (retval) {
EXOFS_ERR("ERROR: Failed to create sysfs entry for "
"uuid-%s_%llx => %d\n", dt_dev->osdname, pid, retval);
return -ENOMEM;
}
return 0;
}
int exofs_sysfs_odev_add(struct exofs_dev *edev, struct exofs_sb_info *sbi)
{
struct kobject *d_kobj;
int retval = 0;
/* create osd device group which contains following attributes
* osdname, systemid & uri
*/
d_kobj = &edev->ed_kobj;
d_kobj->kset = exofs_kset;
retval = kobject_init_and_add(d_kobj, &odev_ktype,
&sbi->s_kobj, "dev%u", edev->did);
if (retval) {
EXOFS_ERR("ERROR: Failed to create sysfs entry for "
"device dev%u\n", edev->did);
return retval;
}
return 0;
}
int exofs_sysfs_init(void)
{
exofs_kset = kset_create_and_add("exofs", NULL, fs_kobj);
if (!exofs_kset) {
EXOFS_ERR("ERROR: kset_create_and_add exofs failed\n");
return -ENOMEM;
}
return 0;
}
void exofs_sysfs_uninit(void)
{
kset_unregister(exofs_kset);
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment