#include <linux/blkdev.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/super.h>
+ #include <linux/fs_context.h>
#include <linux/slab.h>
#include <linux/vfs.h>
#include <linux/mutex.h>
kfree(sbi);
}
- static int cramfs_remount(struct super_block *sb, int *flags, char *data)
+ static int cramfs_reconfigure(struct fs_context *fc)
{
- sync_filesystem(sb);
- *flags |= SB_RDONLY;
+ sync_filesystem(fc->root->d_sb);
+ fc->sb_flags |= SB_RDONLY;
return 0;
}
- static int cramfs_read_super(struct super_block *sb,
- struct cramfs_super *super, int silent)
+ static int cramfs_read_super(struct super_block *sb, struct fs_context *fc,
+ struct cramfs_super *super)
{
struct cramfs_sb_info *sbi = CRAMFS_SB(sb);
unsigned long root_offset;
+ bool silent = fc->sb_flags & SB_SILENT;
/* We don't know the real size yet */
sbi->size = PAGE_SIZE;
/* check for wrong endianness */
if (super->magic == CRAMFS_MAGIC_WEND) {
if (!silent)
- pr_err("wrong endianness\n");
+ errorf(fc, "cramfs: wrong endianness");
return -EINVAL;
}
mutex_unlock(&read_mutex);
if (super->magic != CRAMFS_MAGIC) {
if (super->magic == CRAMFS_MAGIC_WEND && !silent)
- pr_err("wrong endianness\n");
+ errorf(fc, "cramfs: wrong endianness");
else if (!silent)
- pr_err("wrong magic\n");
+ errorf(fc, "cramfs: wrong magic");
return -EINVAL;
}
}
/* get feature flags first */
if (super->flags & ~CRAMFS_SUPPORTED_FLAGS) {
- pr_err("unsupported filesystem features\n");
+ errorf(fc, "cramfs: unsupported filesystem features");
return -EINVAL;
}
/* Check that the root inode is in a sane state */
if (!S_ISDIR(super->root.mode)) {
- pr_err("root is not a directory\n");
+ errorf(fc, "cramfs: root is not a directory");
return -EINVAL;
}
/* correct strange, hard-coded permissions of mkcramfs */
sbi->magic = super->magic;
sbi->flags = super->flags;
if (root_offset == 0)
- pr_info("empty filesystem");
+ infof(fc, "cramfs: empty filesystem");
else if (!(super->flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) &&
((root_offset != sizeof(struct cramfs_super)) &&
(root_offset != 512 + sizeof(struct cramfs_super))))
{
- pr_err("bad root offset %lu\n", root_offset);
+ errorf(fc, "cramfs: bad root offset %lu", root_offset);
return -EINVAL;
}
/* Set it all up.. */
sb->s_flags |= SB_RDONLY;
+ sb->s_time_min = 0;
+ sb->s_time_max = 0;
sb->s_op = &cramfs_ops;
root = get_cramfs_inode(sb, cramfs_root, 0);
if (IS_ERR(root))
return 0;
}
- static int cramfs_blkdev_fill_super(struct super_block *sb, void *data,
- int silent)
+ static int cramfs_blkdev_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct cramfs_sb_info *sbi;
struct cramfs_super super;
for (i = 0; i < READ_BUFFERS; i++)
buffer_blocknr[i] = -1;
- err = cramfs_read_super(sb, &super, silent);
+ err = cramfs_read_super(sb, fc, &super);
if (err)
return err;
return cramfs_finalize_super(sb, &super.root);
}
- static int cramfs_mtd_fill_super(struct super_block *sb, void *data,
- int silent)
+ static int cramfs_mtd_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct cramfs_sb_info *sbi;
struct cramfs_super super;
pr_info("checking physical address %pap for linear cramfs image\n",
&sbi->linear_phys_addr);
- err = cramfs_read_super(sb, &super, silent);
+ err = cramfs_read_super(sb, fc, &super);
if (err)
return err;
};
static const struct super_operations cramfs_ops = {
- .remount_fs = cramfs_remount,
.statfs = cramfs_statfs,
};
- static struct dentry *cramfs_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data)
+ static int cramfs_get_tree(struct fs_context *fc)
{
- struct dentry *ret = ERR_PTR(-ENOPROTOOPT);
+ int ret = -ENOPROTOOPT;
if (IS_ENABLED(CONFIG_CRAMFS_MTD)) {
- ret = mount_mtd(fs_type, flags, dev_name, data,
- cramfs_mtd_fill_super);
- if (!IS_ERR(ret))
+ ret = get_tree_mtd(fc, cramfs_mtd_fill_super);
+ if (ret < 0)
return ret;
}
- if (IS_ENABLED(CONFIG_CRAMFS_BLOCKDEV)) {
- ret = mount_bdev(fs_type, flags, dev_name, data,
- cramfs_blkdev_fill_super);
- }
+ if (IS_ENABLED(CONFIG_CRAMFS_BLOCKDEV))
+ ret = get_tree_bdev(fc, cramfs_blkdev_fill_super);
return ret;
}
+ static const struct fs_context_operations cramfs_context_ops = {
+ .get_tree = cramfs_get_tree,
+ .reconfigure = cramfs_reconfigure,
+ };
+
+ /*
+ * Set up the filesystem mount context.
+ */
+ static int cramfs_init_fs_context(struct fs_context *fc)
+ {
+ fc->ops = &cramfs_context_ops;
+ return 0;
+ }
+
static struct file_system_type cramfs_fs_type = {
.owner = THIS_MODULE,
.name = "cramfs",
- .mount = cramfs_mount,
+ .init_fs_context = cramfs_init_fs_context,
.kill_sb = cramfs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/fs.h>
+ #include <linux/fs_context.h>
#include <linux/list.h>
#include <linux/mtd/mtd.h>
#include <linux/pagemap.h>
if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
truncate_setsize(inode, iattr->ia_size);
inode->i_blocks = (inode->i_size + 511) >> 9;
- }
+ }
return 0;
}
jffs2_do_setattr(inode, &iattr);
}
- int jffs2_do_remount_fs(struct super_block *sb, int *flags, char *data)
+ int jffs2_do_remount_fs(struct super_block *sb, struct fs_context *fc)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
mutex_unlock(&c->alloc_sem);
}
- if (!(*flags & SB_RDONLY))
+ if (!(fc->sb_flags & SB_RDONLY))
jffs2_start_garbage_collect_thread(c);
- *flags |= SB_NOATIME;
+ fc->sb_flags |= SB_NOATIME;
return 0;
}
return hashsize;
}
- int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
+ int jffs2_do_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct jffs2_sb_info *c;
struct inode *root_i;
#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
if (c->mtd->type == MTD_NANDFLASH) {
- pr_err("Cannot operate on NAND flash unless jffs2 NAND support is compiled in\n");
+ errorf(fc, "Cannot operate on NAND flash unless jffs2 NAND support is compiled in");
return -EINVAL;
}
if (c->mtd->type == MTD_DATAFLASH) {
- pr_err("Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in\n");
+ errorf(fc, "Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in");
return -EINVAL;
}
#endif
*/
if ((c->sector_size * blocks) != c->flash_size) {
c->flash_size = c->sector_size * blocks;
- pr_info("Flash size not aligned to erasesize, reducing to %dKiB\n",
- c->flash_size / 1024);
+ infof(fc, "Flash size not aligned to erasesize, reducing to %dKiB",
+ c->flash_size / 1024);
}
if (c->flash_size < 5*c->sector_size) {
- pr_err("Too few erase blocks (%d)\n",
+ errorf(fc, "Too few erase blocks (%d)",
c->flash_size / c->sector_size);
return -EINVAL;
}
sb->s_blocksize = PAGE_SIZE;
sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = JFFS2_SUPER_MAGIC;
+ sb->s_time_min = 0;
+ sb->s_time_max = U32_MAX;
+
if (!sb_rdonly(sb))
jffs2_start_garbage_collect_thread(c);
return 0;
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/blkdev.h>
- #include <linux/parser.h>
+ #include <linux/fs_context.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/statfs.h>
/*
* remounting must involve read-only
*/
- static int romfs_remount(struct super_block *sb, int *flags, char *data)
+ static int romfs_reconfigure(struct fs_context *fc)
{
- sync_filesystem(sb);
- *flags |= SB_RDONLY;
+ sync_filesystem(fc->root->d_sb);
+ fc->sb_flags |= SB_RDONLY;
return 0;
}
.alloc_inode = romfs_alloc_inode,
.free_inode = romfs_free_inode,
.statfs = romfs_statfs,
- .remount_fs = romfs_remount,
};
/*
/*
* fill in the superblock
*/
- static int romfs_fill_super(struct super_block *sb, void *data, int silent)
+ static int romfs_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct romfs_super_block *rsb;
struct inode *root;
sb->s_maxbytes = 0xFFFFFFFF;
sb->s_magic = ROMFS_MAGIC;
sb->s_flags |= SB_RDONLY | SB_NOATIME;
+ sb->s_time_min = 0;
+ sb->s_time_max = 0;
sb->s_op = &romfs_super_ops;
#ifdef CONFIG_ROMFS_ON_MTD
if (rsb->word0 != ROMSB_WORD0 || rsb->word1 != ROMSB_WORD1 ||
img_size < ROMFH_SIZE) {
- if (!silent)
- pr_warn("VFS: Can't find a romfs filesystem on dev %s.\n",
+ if (!(fc->sb_flags & SB_SILENT))
+ errorf(fc, "VFS: Can't find a romfs filesystem on dev %s.\n",
sb->s_id);
goto error_rsb_inval;
}
storage = sb->s_mtd ? "MTD" : "the block layer";
len = strnlen(rsb->name, ROMFS_MAXFN);
- if (!silent)
+ if (!(fc->sb_flags & SB_SILENT))
pr_notice("Mounting image '%*.*s' through %s\n",
(unsigned) len, (unsigned) len, rsb->name, storage);
/*
* get a superblock for mounting
*/
- static struct dentry *romfs_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name,
- void *data)
+ static int romfs_get_tree(struct fs_context *fc)
{
- struct dentry *ret = ERR_PTR(-EINVAL);
+ int ret = -EINVAL;
#ifdef CONFIG_ROMFS_ON_MTD
- ret = mount_mtd(fs_type, flags, dev_name, data, romfs_fill_super);
+ ret = get_tree_mtd(fc, romfs_fill_super);
#endif
#ifdef CONFIG_ROMFS_ON_BLOCK
- if (ret == ERR_PTR(-EINVAL))
- ret = mount_bdev(fs_type, flags, dev_name, data,
- romfs_fill_super);
+ if (ret == -EINVAL)
+ ret = get_tree_bdev(fc, romfs_fill_super);
#endif
return ret;
}
+ static const struct fs_context_operations romfs_context_ops = {
+ .get_tree = romfs_get_tree,
+ .reconfigure = romfs_reconfigure,
+ };
+
+ /*
+ * Set up the filesystem mount context.
+ */
+ static int romfs_init_fs_context(struct fs_context *fc)
+ {
+ fc->ops = &romfs_context_ops;
+ return 0;
+ }
+
/*
* destroy a romfs superblock in the appropriate manner
*/
static struct file_system_type romfs_fs_type = {
.owner = THIS_MODULE,
.name = "romfs",
- .mount = romfs_mount,
+ .init_fs_context = romfs_init_fs_context,
.kill_sb = romfs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/fs.h>
+ #include <linux/fs_context.h>
#include <linux/vfs.h>
#include <linux/slab.h>
#include <linux/mutex.h>
static struct file_system_type squashfs_fs_type;
static const struct super_operations squashfs_super_ops;
- static const struct squashfs_decompressor *supported_squashfs_filesystem(short
- major, short minor, short id)
+ static const struct squashfs_decompressor *supported_squashfs_filesystem(
+ struct fs_context *fc,
+ short major, short minor, short id)
{
const struct squashfs_decompressor *decompressor;
if (major < SQUASHFS_MAJOR) {
- ERROR("Major/Minor mismatch, older Squashfs %d.%d "
- "filesystems are unsupported\n", major, minor);
+ errorf(fc, "Major/Minor mismatch, older Squashfs %d.%d "
+ "filesystems are unsupported", major, minor);
return NULL;
} else if (major > SQUASHFS_MAJOR || minor > SQUASHFS_MINOR) {
- ERROR("Major/Minor mismatch, trying to mount newer "
- "%d.%d filesystem\n", major, minor);
- ERROR("Please update your kernel\n");
+ errorf(fc, "Major/Minor mismatch, trying to mount newer "
+ "%d.%d filesystem", major, minor);
+ errorf(fc, "Please update your kernel");
return NULL;
}
decompressor = squashfs_lookup_decompressor(id);
if (!decompressor->supported) {
- ERROR("Filesystem uses \"%s\" compression. This is not "
- "supported\n", decompressor->name);
+ errorf(fc, "Filesystem uses \"%s\" compression. This is not supported",
+ decompressor->name);
return NULL;
}
}
- static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
+ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct squashfs_sb_info *msblk;
struct squashfs_super_block *sblk = NULL;
sblk = squashfs_read_table(sb, SQUASHFS_START, sizeof(*sblk));
if (IS_ERR(sblk)) {
- ERROR("unable to read squashfs_super_block\n");
+ errorf(fc, "unable to read squashfs_super_block");
err = PTR_ERR(sblk);
sblk = NULL;
goto failed_mount;
/* Check it is a SQUASHFS superblock */
sb->s_magic = le32_to_cpu(sblk->s_magic);
if (sb->s_magic != SQUASHFS_MAGIC) {
- if (!silent)
- ERROR("Can't find a SQUASHFS superblock on %pg\n",
- sb->s_bdev);
+ if (!(fc->sb_flags & SB_SILENT))
+ errorf(fc, "Can't find a SQUASHFS superblock on %pg",
+ sb->s_bdev);
goto failed_mount;
}
/* Check the MAJOR & MINOR versions and lookup compression type */
msblk->decompressor = supported_squashfs_filesystem(
+ fc,
le16_to_cpu(sblk->s_major),
le16_to_cpu(sblk->s_minor),
le16_to_cpu(sblk->compression));
/* Check block size for sanity */
msblk->block_size = le32_to_cpu(sblk->block_size);
if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)
- goto failed_mount;
+ goto insanity;
/*
* Check the system page size is not larger than the filesystem
* block size (by default 128K). This is currently not supported.
*/
if (PAGE_SIZE > msblk->block_size) {
- ERROR("Page size > filesystem block size (%d). This is "
- "currently not supported!\n", msblk->block_size);
+ errorf(fc, "Page size > filesystem block size (%d). This is "
+ "currently not supported!", msblk->block_size);
goto failed_mount;
}
/* Check that block_size and block_log match */
if (msblk->block_size != (1 << msblk->block_log))
- goto failed_mount;
+ goto insanity;
/* Check the root inode for sanity */
root_inode = le64_to_cpu(sblk->root_inode);
if (SQUASHFS_INODE_OFFSET(root_inode) > SQUASHFS_METADATA_SIZE)
- goto failed_mount;
+ goto insanity;
msblk->inode_table = le64_to_cpu(sblk->inode_table_start);
msblk->directory_table = le64_to_cpu(sblk->directory_table_start);
(u64) le64_to_cpu(sblk->id_table_start));
sb->s_maxbytes = MAX_LFS_FILESIZE;
+ sb->s_time_min = 0;
+ sb->s_time_max = U32_MAX;
sb->s_flags |= SB_RDONLY;
sb->s_op = &squashfs_super_ops;
msblk->read_page = squashfs_cache_init("data",
squashfs_max_decompressors(), msblk->block_size);
if (msblk->read_page == NULL) {
- ERROR("Failed to allocate read_page block\n");
+ errorf(fc, "Failed to allocate read_page block");
goto failed_mount;
}
if (IS_ERR(msblk->stream)) {
err = PTR_ERR(msblk->stream);
msblk->stream = NULL;
- goto failed_mount;
+ goto insanity;
}
/* Handle xattrs */
msblk->xattr_id_table = squashfs_read_xattr_id_table(sb,
xattr_id_table_start, &msblk->xattr_table, &msblk->xattr_ids);
if (IS_ERR(msblk->xattr_id_table)) {
- ERROR("unable to read xattr id index table\n");
+ errorf(fc, "unable to read xattr id index table");
err = PTR_ERR(msblk->xattr_id_table);
msblk->xattr_id_table = NULL;
if (err != -ENOTSUPP)
le64_to_cpu(sblk->id_table_start), next_table,
le16_to_cpu(sblk->no_ids));
if (IS_ERR(msblk->id_table)) {
- ERROR("unable to read id index table\n");
+ errorf(fc, "unable to read id index table");
err = PTR_ERR(msblk->id_table);
msblk->id_table = NULL;
goto failed_mount;
msblk->inode_lookup_table = squashfs_read_inode_lookup_table(sb,
lookup_table_start, next_table, msblk->inodes);
if (IS_ERR(msblk->inode_lookup_table)) {
- ERROR("unable to read inode lookup table\n");
+ errorf(fc, "unable to read inode lookup table");
err = PTR_ERR(msblk->inode_lookup_table);
msblk->inode_lookup_table = NULL;
goto failed_mount;
msblk->fragment_index = squashfs_read_fragment_index_table(sb,
le64_to_cpu(sblk->fragment_table_start), next_table, fragments);
if (IS_ERR(msblk->fragment_index)) {
- ERROR("unable to read fragment index table\n");
+ errorf(fc, "unable to read fragment index table");
err = PTR_ERR(msblk->fragment_index);
msblk->fragment_index = NULL;
goto failed_mount;
/* Sanity check directory_table */
if (msblk->directory_table > next_table) {
err = -EINVAL;
- goto failed_mount;
+ goto insanity;
}
/* Sanity check inode_table */
if (msblk->inode_table >= msblk->directory_table) {
err = -EINVAL;
- goto failed_mount;
+ goto insanity;
}
/* allocate root */
kfree(sblk);
return 0;
+ insanity:
+ errorf(fc, "squashfs image failed sanity check");
failed_mount:
squashfs_cache_delete(msblk->block_cache);
squashfs_cache_delete(msblk->fragment_cache);
return err;
}
+ static int squashfs_get_tree(struct fs_context *fc)
+ {
+ return get_tree_bdev(fc, squashfs_fill_super);
+ }
+
+ static int squashfs_reconfigure(struct fs_context *fc)
+ {
+ sync_filesystem(fc->root->d_sb);
+ fc->sb_flags |= SB_RDONLY;
+ return 0;
+ }
+
+ static const struct fs_context_operations squashfs_context_ops = {
+ .get_tree = squashfs_get_tree,
+ .reconfigure = squashfs_reconfigure,
+ };
+
+ static int squashfs_init_fs_context(struct fs_context *fc)
+ {
+ fc->ops = &squashfs_context_ops;
+ return 0;
+ }
static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
}
- static int squashfs_remount(struct super_block *sb, int *flags, char *data)
- {
- sync_filesystem(sb);
- *flags |= SB_RDONLY;
- return 0;
- }
-
-
static void squashfs_put_super(struct super_block *sb)
{
if (sb->s_fs_info) {
}
}
-
- static struct dentry *squashfs_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
- {
- return mount_bdev(fs_type, flags, dev_name, data, squashfs_fill_super);
- }
-
-
static struct kmem_cache *squashfs_inode_cachep;
static struct file_system_type squashfs_fs_type = {
.owner = THIS_MODULE,
.name = "squashfs",
- .mount = squashfs_mount,
+ .init_fs_context = squashfs_init_fs_context,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV
};
.free_inode = squashfs_free_inode,
.statfs = squashfs_statfs,
.put_super = squashfs_put_super,
- .remount_fs = squashfs_remount
};
module_init(init_squashfs_fs);
#include <linux/backing-dev.h>
#include <linux/rculist_bl.h>
#include <linux/cleancache.h>
+#include <linux/fscrypt.h>
#include <linux/fsnotify.h>
#include <linux/lockdep.h>
#include <linux/user_namespace.h>
s->s_maxbytes = MAX_NON_LFS;
s->s_op = &default_op;
s->s_time_gran = 1000000000;
+ s->s_time_min = TIME64_MIN;
+ s->s_time_max = TIME64_MAX;
s->cleancache_poolid = CLEANCACHE_NO_POOL;
s->s_shrink.seeks = DEFAULT_SEEKS;
WARN_ON(s->s_inode_lru.node);
WARN_ON(!list_empty(&s->s_mounts));
security_sb_free(s);
+ fscrypt_sb_free(s);
put_user_ns(s->s_user_ns);
kfree(s->s_subtype);
call_rcu(&s->rcu, destroy_super_rcu);
{
int (*test)(struct super_block *, struct fs_context *);
struct super_block *sb;
+ int err;
switch (keying) {
case vfs_get_single_super:
+ case vfs_get_single_reconf_super:
test = test_single_super;
break;
case vfs_get_keyed_super:
return PTR_ERR(sb);
if (!sb->s_root) {
- int err = fill_super(sb, fc);
- if (err) {
- deactivate_locked_super(sb);
- return err;
- }
+ err = fill_super(sb, fc);
+ if (err)
+ goto error;
sb->s_flags |= SB_ACTIVE;
+ fc->root = dget(sb->s_root);
+ } else {
+ fc->root = dget(sb->s_root);
+ if (keying == vfs_get_single_reconf_super) {
+ err = reconfigure_super(fc);
+ if (err < 0) {
+ dput(fc->root);
+ fc->root = NULL;
+ goto error;
+ }
+ }
}
- BUG_ON(fc->root);
- fc->root = dget(sb->s_root);
return 0;
+
+ error:
+ deactivate_locked_super(sb);
+ return err;
}
EXPORT_SYMBOL(vfs_get_super);
}
EXPORT_SYMBOL(get_tree_single);
+ int get_tree_single_reconf(struct fs_context *fc,
+ int (*fill_super)(struct super_block *sb,
+ struct fs_context *fc))
+ {
+ return vfs_get_super(fc, vfs_get_single_reconf_super, fill_super);
+ }
+ EXPORT_SYMBOL(get_tree_single_reconf);
+
int get_tree_keyed(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc),
git.samba.org / sfrench / cifs-2.6.git / commitdiff