fs: switch ->s_uuid to uuid_t
For some file systems we still memcpy into it, but in various places this already allows us to use the proper uuid helpers. More to come.. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com> (Changes to IMA/EVM) Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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787d8c530a
commit
85787090a2
14 changed files with 23 additions and 36 deletions
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@ -233,12 +233,12 @@ static int tmem_cleancache_init_fs(size_t pagesize)
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return xen_tmem_new_pool(uuid_private, 0, pagesize);
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}
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static int tmem_cleancache_init_shared_fs(char *uuid, size_t pagesize)
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static int tmem_cleancache_init_shared_fs(uuid_t *uuid, size_t pagesize)
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{
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struct tmem_pool_uuid shared_uuid;
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shared_uuid.uuid_lo = *(u64 *)uuid;
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shared_uuid.uuid_hi = *(u64 *)(&uuid[8]);
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shared_uuid.uuid_lo = *(u64 *)&uuid->b[0];
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shared_uuid.uuid_hi = *(u64 *)&uuid->b[8];
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return xen_tmem_new_pool(shared_uuid, TMEM_POOL_SHARED, pagesize);
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}
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@ -3952,7 +3952,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
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sb->s_qcop = &ext4_qctl_operations;
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sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
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#endif
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memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
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memcpy(&sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
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INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
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mutex_init(&sbi->s_orphan_lock);
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@ -1937,7 +1937,7 @@ try_onemore:
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sb->s_time_gran = 1;
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sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
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(test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0);
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memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
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memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
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/* init f2fs-specific super block info */
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sbi->valid_super_block = valid_super_block;
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@ -203,7 +203,7 @@ static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf)
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memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
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memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
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memcpy(s->s_uuid, str->sb_uuid, 16);
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memcpy(&s->s_uuid, str->sb_uuid, 16);
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}
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/**
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@ -71,25 +71,14 @@ static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
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return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
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}
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static int gfs2_uuid_valid(const u8 *uuid)
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{
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int i;
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for (i = 0; i < 16; i++) {
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if (uuid[i])
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return 1;
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}
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return 0;
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}
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static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct super_block *s = sdp->sd_vfs;
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const u8 *uuid = s->s_uuid;
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buf[0] = '\0';
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if (!gfs2_uuid_valid(uuid))
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if (uuid_is_null(&s->s_uuid))
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return 0;
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return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid);
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return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);
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}
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static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
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@ -712,14 +701,13 @@ static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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struct super_block *s = sdp->sd_vfs;
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const u8 *uuid = s->s_uuid;
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add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
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add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
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if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
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add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);
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if (gfs2_uuid_valid(uuid))
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add_uevent_var(env, "UUID=%pUB", uuid);
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if (!uuid_is_null(&s->s_uuid))
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add_uevent_var(env, "UUID=%pUB", &s->s_uuid);
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return 0;
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}
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@ -2062,7 +2062,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
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cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
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bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
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sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
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memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
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memcpy(&sb->s_uuid, di->id2.i_super.s_uuid,
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sizeof(di->id2.i_super.s_uuid));
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osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
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@ -284,7 +284,6 @@ static int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
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struct dentry *upper)
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{
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struct super_block *sb = lower->d_sb;
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uuid_be *uuid = (uuid_be *) &sb->s_uuid;
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const struct ovl_fh *fh = NULL;
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int err;
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@ -294,8 +293,8 @@ static int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
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* up and a pure upper inode.
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*/
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if (sb->s_export_op && sb->s_export_op->fh_to_dentry &&
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uuid_be_cmp(*uuid, NULL_UUID_BE)) {
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fh = ovl_encode_fh(lower, uuid);
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!uuid_is_null(&sb->s_uuid)) {
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fh = ovl_encode_fh(lower, &sb->s_uuid);
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if (IS_ERR(fh))
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return PTR_ERR(fh);
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}
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@ -135,7 +135,7 @@ static struct dentry *ovl_get_origin(struct dentry *dentry,
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* Make sure that the stored uuid matches the uuid of the lower
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* layer where file handle will be decoded.
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*/
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if (uuid_be_cmp(fh->uuid, *(uuid_be *) &mnt->mnt_sb->s_uuid))
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if (!uuid_equal(&fh->uuid, &mnt->mnt_sb->s_uuid))
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goto out;
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origin = exportfs_decode_fh(mnt, (struct fid *)fh->fid,
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@ -74,8 +74,7 @@ xfs_uuid_mount(
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int hole, i;
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/* Publish UUID in struct super_block */
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BUILD_BUG_ON(sizeof(mp->m_super->s_uuid) != sizeof(uuid_t));
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memcpy(&mp->m_super->s_uuid, uuid, sizeof(uuid_t));
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uuid_copy(&mp->m_super->s_uuid, uuid);
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if (mp->m_flags & XFS_MOUNT_NOUUID)
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return 0;
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@ -27,7 +27,7 @@ struct cleancache_filekey {
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struct cleancache_ops {
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int (*init_fs)(size_t);
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int (*init_shared_fs)(char *uuid, size_t);
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int (*init_shared_fs)(uuid_t *uuid, size_t);
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int (*get_page)(int, struct cleancache_filekey,
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pgoff_t, struct page *);
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void (*put_page)(int, struct cleancache_filekey,
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@ -30,6 +30,7 @@
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#include <linux/percpu-rwsem.h>
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#include <linux/workqueue.h>
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#include <linux/delayed_call.h>
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#include <linux/uuid.h>
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#include <asm/byteorder.h>
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#include <uapi/linux/fs.h>
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@ -1328,8 +1329,8 @@ struct super_block {
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struct sb_writers s_writers;
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char s_id[32]; /* Informational name */
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u8 s_uuid[16]; /* UUID */
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char s_id[32]; /* Informational name */
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uuid_t s_uuid; /* UUID */
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void *s_fs_info; /* Filesystem private info */
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unsigned int s_max_links;
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@ -130,7 +130,7 @@ void __cleancache_init_shared_fs(struct super_block *sb)
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int pool_id = CLEANCACHE_NO_BACKEND_SHARED;
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if (cleancache_ops) {
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pool_id = cleancache_ops->init_shared_fs(sb->s_uuid, PAGE_SIZE);
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pool_id = cleancache_ops->init_shared_fs(&sb->s_uuid, PAGE_SIZE);
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if (pool_id < 0)
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pool_id = CLEANCACHE_NO_POOL;
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}
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@ -164,7 +164,7 @@ static void hmac_add_misc(struct shash_desc *desc, struct inode *inode,
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hmac_misc.mode = inode->i_mode;
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crypto_shash_update(desc, (const u8 *)&hmac_misc, sizeof(hmac_misc));
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if (evm_hmac_attrs & EVM_ATTR_FSUUID)
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crypto_shash_update(desc, inode->i_sb->s_uuid,
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crypto_shash_update(desc, &inode->i_sb->s_uuid.b[0],
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sizeof(inode->i_sb->s_uuid));
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crypto_shash_final(desc, digest);
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}
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@ -244,7 +244,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
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&& rule->fsmagic != inode->i_sb->s_magic)
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return false;
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if ((rule->flags & IMA_FSUUID) &&
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memcmp(&rule->fsuuid, inode->i_sb->s_uuid, sizeof(rule->fsuuid)))
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!uuid_equal(&rule->fsuuid, &inode->i_sb->s_uuid))
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return false;
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if ((rule->flags & IMA_UID) && !rule->uid_op(cred->uid, rule->uid))
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return false;
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