Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/kobject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/gfs2_ondisk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/genhd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include "gfs2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include "incore.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "sys.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "super.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include "glock.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include "quota.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include "util.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include "glops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include "recovery.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) struct gfs2_attr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	struct attribute attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	ssize_t (*show)(struct gfs2_sbd *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 			      char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	return a->show ? a->show(sdp, buf) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 			       const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	return a->store ? a->store(sdp, buf, len) : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static const struct sysfs_ops gfs2_attr_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	.show  = gfs2_attr_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	.store = gfs2_attr_store,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static struct kset *gfs2_kset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	return snprintf(buf, PAGE_SIZE, "%u:%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct super_block *s = sdp->sd_vfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	buf[0] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (uuid_is_null(&s->s_uuid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	struct super_block *sb = sdp->sd_vfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	return snprintf(buf, PAGE_SIZE, "%d\n", frozen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	int error, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	error = kstrtoint(buf, 0, &n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	switch (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		error = thaw_super(sdp->sd_vfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		error = freeze_super(sdp->sd_vfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		fs_warn(sdp, "freeze %d error %d\n", n, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	unsigned int b = gfs2_withdrawn(sdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	return snprintf(buf, PAGE_SIZE, "%u\n", b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	int error, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	error = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (val != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	gfs2_lm(sdp, "withdrawing from cluster at user's request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	gfs2_withdraw(sdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 				 size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	int error, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	error = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (val != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	gfs2_statfs_sync(sdp->sd_vfs, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 				size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	int error, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	error = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	if (val != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	gfs2_quota_sync(sdp->sd_vfs, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 					size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct kqid qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	u32 id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	error = kstrtou32(buf, 0, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	qid = make_kqid(current_user_ns(), USRQUOTA, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	if (!qid_valid(qid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	error = gfs2_quota_refresh(sdp, qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	return error ? error : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 					 size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	struct kqid qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	u32 id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	error = kstrtou32(buf, 0, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	qid = make_kqid(current_user_ns(), GRPQUOTA, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	if (!qid_valid(qid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	error = gfs2_quota_refresh(sdp, qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	return error ? error : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	struct gfs2_glock *gl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	const struct gfs2_glock_operations *glops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	unsigned int glmode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	unsigned int gltype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	unsigned long long glnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	char mode[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		    mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (rv != 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if (strcmp(mode, "EX") == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		glmode = LM_ST_UNLOCKED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		glmode = LM_ST_DEFERRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		glmode = LM_ST_SHARED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	if (gltype > LM_TYPE_JOURNAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		glops = &gfs2_freeze_glops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		glops = gfs2_glops_list[gltype];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	if (glops == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		fs_info(sdp, "demote interface used\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	gfs2_glock_cb(gl, glmode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	gfs2_glock_put(gl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) #define GFS2_ATTR(name, mode, show, store) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) GFS2_ATTR(id,                  0444, id_show,       NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) GFS2_ATTR(fsname,              0444, fsname_show,   NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) GFS2_ATTR(uuid,                0444, uuid_show,     NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) GFS2_ATTR(freeze,              0644, freeze_show,   freeze_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) GFS2_ATTR(withdraw,            0644, withdraw_show, withdraw_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) GFS2_ATTR(statfs_sync,         0200, NULL,          statfs_sync_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) GFS2_ATTR(quota_sync,          0200, NULL,          quota_sync_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) GFS2_ATTR(quota_refresh_user,  0200, NULL,          quota_refresh_user_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) GFS2_ATTR(quota_refresh_group, 0200, NULL,          quota_refresh_group_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) GFS2_ATTR(demote_rq,           0200, NULL,	    demote_rq_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static struct attribute *gfs2_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	&gfs2_attr_id.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	&gfs2_attr_fsname.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	&gfs2_attr_uuid.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	&gfs2_attr_freeze.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	&gfs2_attr_withdraw.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	&gfs2_attr_statfs_sync.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	&gfs2_attr_quota_sync.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	&gfs2_attr_quota_refresh_user.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	&gfs2_attr_quota_refresh_group.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	&gfs2_attr_demote_rq.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) ATTRIBUTE_GROUPS(gfs2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static void gfs2_sbd_release(struct kobject *kobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	complete(&sdp->sd_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static struct kobj_type gfs2_ktype = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	.release = gfs2_sbd_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	.default_groups = gfs2_groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	.sysfs_ops     = &gfs2_attr_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)  * lock_module. Originally from lock_dlm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	return sprintf(buf, "%s\n", ops->lm_proto_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	int val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		val = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	ret = sprintf(buf, "%d\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	ret = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	if (val == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	else if (val == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		smp_mb__after_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		gfs2_glock_thaw(sdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	int val = completion_done(&sdp->sd_wdack) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	return sprintf(buf, "%d\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	int ret, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	ret = kstrtoint(buf, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	if ((val == 1) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	    !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		complete(&sdp->sd_wdack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	return sprintf(buf, "%d\n", ls->ls_first);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	unsigned first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	rv = sscanf(buf, "%u", &first);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	if (rv != 1 || first > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	rv = wait_for_completion_killable(&sdp->sd_locking_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	spin_lock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	rv = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	rv = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	if (sdp->sd_args.ar_spectator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	sdp->sd_lockstruct.ls_first = first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)         spin_unlock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)         return rv ? rv : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	struct gfs2_jdesc *jd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	/* Wait for our primary journal to be initialized */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	wait_for_completion(&sdp->sd_journal_ready);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	spin_lock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	rv = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	/**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	 * If we're a spectator, we use journal0, but it's not really ours.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	 * So we need to wait for its recovery too. If we skip it we'd never
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	 * queue work to the recovery workqueue, and so its completion would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	 * never clear the DFL_BLOCK_LOCKS flag, so all our locks would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 	 * permanently stop working.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	if (!sdp->sd_jdesc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	if (sdp->sd_jdesc->jd_jid == jid && !sdp->sd_args.ar_spectator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	rv = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 		if (jd->jd_jid != jid && !sdp->sd_args.ar_spectator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 		rv = gfs2_recover_journal(jd, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	spin_unlock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 	return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 	unsigned jid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 	rv = sscanf(buf, "%u", &jid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 	if (rv != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 		rv = -ESHUTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	rv = gfs2_recover_set(sdp, jid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 	return rv ? rv : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 	return sprintf(buf, "%d\n", ls->ls_recover_jid_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 	struct lm_lockstruct *ls = &sdp->sd_lockstruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	return sprintf(buf, "%d\n", ls->ls_recover_jid_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 	return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)         int jid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 	rv = sscanf(buf, "%d", &jid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	if (rv != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 	rv = wait_for_completion_killable(&sdp->sd_locking_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 		return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 	spin_lock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 	rv = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 	rv = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 	if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 	rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 	if (sdp->sd_args.ar_spectator && jid > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 		rv = jid = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 	sdp->sd_lockstruct.ls_jid = jid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 	clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) 	smp_mb__after_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 	wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 	spin_unlock(&sdp->sd_jindex_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 	return rv ? rv : len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) #define GDLM_ATTR(_name,_mode,_show,_store) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) GDLM_ATTR(proto_name,		0444, proto_name_show,		NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) GDLM_ATTR(block,		0644, block_show,		block_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) GDLM_ATTR(withdraw,		0644, wdack_show,		wdack_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) GDLM_ATTR(jid,			0644, jid_show,			jid_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) GDLM_ATTR(first,		0644, lkfirst_show,		lkfirst_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) GDLM_ATTR(first_done,		0444, first_done_show,		NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) GDLM_ATTR(recover,		0600, NULL,			recover_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) GDLM_ATTR(recover_done,		0444, recover_done_show,	NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) GDLM_ATTR(recover_status,	0444, recover_status_show,	NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) static struct attribute *lock_module_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 	&gdlm_attr_proto_name.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 	&gdlm_attr_block.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 	&gdlm_attr_withdraw.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 	&gdlm_attr_jid.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) 	&gdlm_attr_first.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) 	&gdlm_attr_first_done.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 	&gdlm_attr_recover.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) 	&gdlm_attr_recover_done.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) 	&gdlm_attr_recover_status.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)  * get and set struct gfs2_tune fields
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) 	return snprintf(buf, PAGE_SIZE, "%u %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) 			sdp->sd_tune.gt_quota_scale_num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) 			sdp->sd_tune.gt_quota_scale_den);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) 				 size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) 	struct gfs2_tune *gt = &sdp->sd_tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) 	unsigned int x, y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) 	if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) 	spin_lock(&gt->gt_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) 	gt->gt_quota_scale_num = x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) 	gt->gt_quota_scale_den = y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) 	spin_unlock(&gt->gt_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) 			int check_zero, const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) 	struct gfs2_tune *gt = &sdp->sd_tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) 	unsigned int x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) 	if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) 	error = kstrtouint(buf, 0, &x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) 	if (check_zero && !x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) 	spin_lock(&gt->gt_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) 	*field = x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) 	spin_unlock(&gt->gt_spin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) #define TUNE_ATTR_3(name, show, store)                                        \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #define TUNE_ATTR_2(name, store)                                              \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                   \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {                                                                             \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) 	return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name);      \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }                                                                             \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) TUNE_ATTR_3(name, name##_show, store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) #define TUNE_ATTR(name, check_zero)                                           \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) {                                                                             \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) 	return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len);  \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }                                                                             \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) TUNE_ATTR_2(name, name##_store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) TUNE_ATTR(quota_warn_period, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) TUNE_ATTR(quota_quantum, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) TUNE_ATTR(max_readahead, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) TUNE_ATTR(complain_secs, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) TUNE_ATTR(statfs_slow, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) TUNE_ATTR(new_files_jdata, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) TUNE_ATTR(statfs_quantum, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) static struct attribute *tune_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) 	&tune_attr_quota_warn_period.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) 	&tune_attr_quota_quantum.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) 	&tune_attr_max_readahead.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) 	&tune_attr_complain_secs.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) 	&tune_attr_statfs_slow.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) 	&tune_attr_statfs_quantum.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) 	&tune_attr_quota_scale.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) 	&tune_attr_new_files_jdata.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) static const struct attribute_group tune_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) 	.name = "tune",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) 	.attrs = tune_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) static const struct attribute_group lock_module_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) 	.name = "lock_module",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) 	.attrs = lock_module_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) 	struct super_block *sb = sdp->sd_vfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) 	char ro[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) 	char spectator[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) 	char *envp[] = { ro, spectator, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) 	sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) 	sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) 	init_completion(&sdp->sd_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) 	sdp->sd_kobj.kset = gfs2_kset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) 	error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) 				     "%s", sdp->sd_table_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) 		goto fail_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) 	error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) 		goto fail_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) 	error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) 		goto fail_tune;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) 	error = sysfs_create_link(&sdp->sd_kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) 				  &disk_to_dev(sb->s_bdev->bd_disk)->kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) 				  "device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) 		goto fail_lock_module;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) 	kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) fail_lock_module:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) 	sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) fail_tune:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) 	sysfs_remove_group(&sdp->sd_kobj, &tune_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) fail_reg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) 	fs_err(sdp, "error %d adding sysfs files\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) 	kobject_put(&sdp->sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) 	wait_for_completion(&sdp->sd_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) 	sb->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) 	sysfs_remove_link(&sdp->sd_kobj, "device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) 	sysfs_remove_group(&sdp->sd_kobj, &tune_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) 	sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) 	kobject_put(&sdp->sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) 	wait_for_completion(&sdp->sd_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) 		       struct kobj_uevent_env *env)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) 	struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) 	struct super_block *s = sdp->sd_vfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) 	add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) 	add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) 	if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) 		add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) 	if (!uuid_is_null(&s->s_uuid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) 		add_uevent_var(env, "UUID=%pUB", &s->s_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) static const struct kset_uevent_ops gfs2_uevent_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) 	.uevent = gfs2_uevent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) int gfs2_sys_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) 	gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) 	if (!gfs2_kset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) void gfs2_sys_uninit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) 	kset_unregister(gfs2_kset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)