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path: root/fs/adfs/super.c
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Diffstat (limited to 'fs/adfs/super.c')
-rw-r--r--fs/adfs/super.c88
1 files changed, 55 insertions, 33 deletions
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 959dbff2d42..9852bdf34d7 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -14,8 +14,8 @@
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/statfs.h>
+#include <linux/user_namespace.h>
#include "adfs.h"
#include "dir_f.h"
#include "dir_fplus.h"
@@ -120,40 +120,38 @@ static void adfs_put_super(struct super_block *sb)
int i;
struct adfs_sb_info *asb = ADFS_SB(sb);
- lock_kernel();
-
for (i = 0; i < asb->s_map_size; i++)
brelse(asb->s_map[i].dm_bh);
kfree(asb->s_map);
- kfree(asb);
- sb->s_fs_info = NULL;
-
- unlock_kernel();
+ kfree_rcu(asb, rcu);
}
-static int adfs_show_options(struct seq_file *seq, struct vfsmount *mnt)
+static int adfs_show_options(struct seq_file *seq, struct dentry *root)
{
- struct adfs_sb_info *asb = ADFS_SB(mnt->mnt_sb);
+ struct adfs_sb_info *asb = ADFS_SB(root->d_sb);
- if (asb->s_uid != 0)
- seq_printf(seq, ",uid=%u", asb->s_uid);
- if (asb->s_gid != 0)
- seq_printf(seq, ",gid=%u", asb->s_gid);
+ if (!uid_eq(asb->s_uid, GLOBAL_ROOT_UID))
+ seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, asb->s_uid));
+ if (!gid_eq(asb->s_gid, GLOBAL_ROOT_GID))
+ seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, asb->s_gid));
if (asb->s_owner_mask != ADFS_DEFAULT_OWNER_MASK)
seq_printf(seq, ",ownmask=%o", asb->s_owner_mask);
if (asb->s_other_mask != ADFS_DEFAULT_OTHER_MASK)
seq_printf(seq, ",othmask=%o", asb->s_other_mask);
+ if (asb->s_ftsuffix != 0)
+ seq_printf(seq, ",ftsuffix=%u", asb->s_ftsuffix);
return 0;
}
-enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_err};
+enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_ftsuffix, Opt_err};
static const match_table_t tokens = {
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_ownmask, "ownmask=%o"},
{Opt_othmask, "othmask=%o"},
+ {Opt_ftsuffix, "ftsuffix=%u"},
{Opt_err, NULL}
};
@@ -177,12 +175,16 @@ static int parse_options(struct super_block *sb, char *options)
case Opt_uid:
if (match_int(args, &option))
return -EINVAL;
- asb->s_uid = option;
+ asb->s_uid = make_kuid(current_user_ns(), option);
+ if (!uid_valid(asb->s_uid))
+ return -EINVAL;
break;
case Opt_gid:
if (match_int(args, &option))
return -EINVAL;
- asb->s_gid = option;
+ asb->s_gid = make_kgid(current_user_ns(), option);
+ if (!gid_valid(asb->s_gid))
+ return -EINVAL;
break;
case Opt_ownmask:
if (match_octal(args, &option))
@@ -194,6 +196,11 @@ static int parse_options(struct super_block *sb, char *options)
return -EINVAL;
asb->s_other_mask = option;
break;
+ case Opt_ftsuffix:
+ if (match_int(args, &option))
+ return -EINVAL;
+ asb->s_ftsuffix = option;
+ break;
default:
printk("ADFS-fs: unrecognised mount option \"%s\" "
"or missing value\n", p);
@@ -205,6 +212,7 @@ static int parse_options(struct super_block *sb, char *options)
static int adfs_remount(struct super_block *sb, int *flags, char *data)
{
+ sync_filesystem(sb);
*flags |= MS_NODIRATIME;
return parse_options(sb, data);
}
@@ -240,11 +248,17 @@ static struct inode *adfs_alloc_inode(struct super_block *sb)
return &ei->vfs_inode;
}
-static void adfs_destroy_inode(struct inode *inode)
+static void adfs_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(adfs_inode_cachep, ADFS_I(inode));
}
+static void adfs_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, adfs_i_callback);
+}
+
static void init_once(void *foo)
{
struct adfs_inode_info *ei = (struct adfs_inode_info *) foo;
@@ -252,7 +266,7 @@ static void init_once(void *foo)
inode_init_once(&ei->vfs_inode);
}
-static int init_inodecache(void)
+static int __init init_inodecache(void)
{
adfs_inode_cachep = kmem_cache_create("adfs_inode_cache",
sizeof(struct adfs_inode_info),
@@ -266,6 +280,11 @@ static int init_inodecache(void)
static void destroy_inodecache(void)
{
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(adfs_inode_cachep);
}
@@ -352,22 +371,19 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
struct adfs_sb_info *asb;
struct inode *root;
- lock_kernel();
-
sb->s_flags |= MS_NODIRATIME;
asb = kzalloc(sizeof(*asb), GFP_KERNEL);
- if (!asb) {
- unlock_kernel();
+ if (!asb)
return -ENOMEM;
- }
sb->s_fs_info = asb;
/* set default options */
- asb->s_uid = 0;
- asb->s_gid = 0;
+ asb->s_uid = GLOBAL_ROOT_UID;
+ asb->s_gid = GLOBAL_ROOT_GID;
asb->s_owner_mask = ADFS_DEFAULT_OWNER_MASK;
asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
+ asb->s_ftsuffix = 0;
if (parse_options(sb, data))
goto error;
@@ -447,11 +463,13 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root);
root_obj.name_len = 0;
- root_obj.loadaddr = 0;
- root_obj.execaddr = 0;
+ /* Set root object date as 01 Jan 1987 00:00:00 */
+ root_obj.loadaddr = 0xfff0003f;
+ root_obj.execaddr = 0xec22c000;
root_obj.size = ADFS_NEWDIR_SIZE;
root_obj.attr = ADFS_NDA_DIRECTORY | ADFS_NDA_OWNER_READ |
ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ;
+ root_obj.filetype = -1;
/*
* If this is a F+ disk with variable length directories,
@@ -465,20 +483,24 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
asb->s_dir = &adfs_f_dir_ops;
asb->s_namelen = ADFS_F_NAME_LEN;
}
+ /*
+ * ,xyz hex filetype suffix may be added by driver
+ * to files that have valid RISC OS filetype
+ */
+ if (asb->s_ftsuffix)
+ asb->s_namelen += 4;
+ sb->s_d_op = &adfs_dentry_operations;
root = adfs_iget(sb, &root_obj);
- sb->s_root = d_alloc_root(root);
+ sb->s_root = d_make_root(root);
if (!sb->s_root) {
int i;
- iput(root);
for (i = 0; i < asb->s_map_size; i++)
brelse(asb->s_map[i].dm_bh);
kfree(asb->s_map);
adfs_error(sb, "get root inode failed\n");
goto error;
- } else
- sb->s_root->d_op = &adfs_dentry_operations;
- unlock_kernel();
+ }
return 0;
error_free_bh:
@@ -486,7 +508,6 @@ error_free_bh:
error:
sb->s_fs_info = NULL;
kfree(asb);
- unlock_kernel();
return -EINVAL;
}
@@ -503,6 +524,7 @@ static struct file_system_type adfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("adfs");
static int __init init_adfs_fs(void)
{
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 08:21:55 +0000