cregit-Linux how code gets into the kernel

Release 4.11 fs/exofs/sys.c

Directory: fs/exofs
/*
 * Copyright (C) 2012
 * Sachin Bhamare <sbhamare@panasas.com>
 * Boaz Harrosh <ooo@electrozaur.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; }

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Sachin Bhamare66100.00%1100.00%
Total66100.00%1100.00%


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; }

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Sachin Bhamare72100.00%1100.00%
Total72100.00%1100.00%

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); }

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Sachin Bhamare55100.00%1100.00%
Total55100.00%1100.00%


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; }

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Sachin Bhamare55100.00%1100.00%
Total55100.00%1100.00%


static ssize_t uri_show(struct exofs_dev *edp, char *buf) { return snprintf(buf, edp->urilen, "%s", edp->uri); }

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static ssize_t uri_store(struct exofs_dev *edp, const char *buf, size_t len) { uint8_t *new_uri; edp->urilen = strlen(buf) + 1; new_uri = krealloc(edp->uri, edp->urilen, GFP_KERNEL); if (new_uri == NULL) return -ENOMEM; edp->uri = new_uri; strncpy(edp->uri, buf, edp->urilen); return edp->urilen; }

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Sachin Bhamare6274.70%150.00%
Alexey Khoroshilov2125.30%150.00%
Total83100.00%2100.00%

#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(void) { #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)kref_read(&k_name->kref)); } #endif }

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PersonTokensPropCommitsCommitProp
Sachin Bhamare5292.86%133.33%
Randy Dunlap35.36%133.33%
Peter Zijlstra11.79%133.33%
Total56100.00%3100.00%

/* * 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); }

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Sachin Bhamare59100.00%1100.00%
Total59100.00%1100.00%

/* * 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; }

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Sachin Bhamare100100.00%1100.00%
Total100100.00%1100.00%


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; }

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Sachin Bhamare82100.00%1100.00%
Total82100.00%1100.00%


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; }

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Sachin Bhamare37100.00%1100.00%
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void exofs_sysfs_uninit(void) { kset_unregister(exofs_kset); }

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Sachin Bhamare12100.00%1100.00%
Total12100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Sachin Bhamare85697.05%120.00%
Alexey Khoroshilov212.38%120.00%
Randy Dunlap30.34%120.00%
Peter Zijlstra10.11%120.00%
Boaz Harrosh10.11%120.00%
Total882100.00%5100.00%
Directory: fs/exofs
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