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-rw-r--r--fs/affs/Kconfig2
-rw-r--r--fs/affs/affs.h24
-rw-r--r--fs/affs/amigaffs.c27
-rw-r--r--fs/affs/file.c58
-rw-r--r--fs/affs/inode.c9
-rw-r--r--fs/affs/namei.c19
-rw-r--r--fs/affs/super.c15
-rw-r--r--fs/affs/symlink.c5
8 files changed, 112 insertions, 47 deletions
diff --git a/fs/affs/Kconfig b/fs/affs/Kconfig
index 84c46b9025c5..eb9d0ab850cb 100644
--- a/fs/affs/Kconfig
+++ b/fs/affs/Kconfig
@@ -9,7 +9,7 @@ config AFFS_FS
FFS partition on your hard drive. Amiga floppies however cannot be
read with this driver due to an incompatibility of the floppy
controller used in an Amiga and the standard floppy controller in
- PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
+ PCs and workstations. Read <file:Documentation/filesystems/affs.rst>
and <file:fs/affs/Changes>.
With this driver you can also mount disk files used by Bernd
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index a755bef7c4c7..bfa89e131ead 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -167,27 +167,33 @@ extern const struct export_operations affs_export_ops;
extern int affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len);
extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int);
extern int affs_unlink(struct inode *dir, struct dentry *dentry);
-extern int affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool);
-extern int affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
+extern int affs_create(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode, bool);
+extern int affs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode);
extern int affs_rmdir(struct inode *dir, struct dentry *dentry);
extern int affs_link(struct dentry *olddentry, struct inode *dir,
struct dentry *dentry);
-extern int affs_symlink(struct inode *dir, struct dentry *dentry,
- const char *symname);
-extern int affs_rename2(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry,
- unsigned int flags);
+extern int affs_symlink(struct user_namespace *mnt_userns,
+ struct inode *dir, struct dentry *dentry,
+ const char *symname);
+extern int affs_rename2(struct user_namespace *mnt_userns,
+ struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry,
+ unsigned int flags);
/* inode.c */
extern struct inode *affs_new_inode(struct inode *dir);
-extern int affs_notify_change(struct dentry *dentry, struct iattr *attr);
+extern int affs_notify_change(struct user_namespace *mnt_userns,
+ struct dentry *dentry, struct iattr *attr);
extern void affs_evict_inode(struct inode *inode);
extern struct inode *affs_iget(struct super_block *sb,
unsigned long ino);
extern int affs_write_inode(struct inode *inode,
struct writeback_control *wbc);
-extern int affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s32 type);
+extern int affs_add_entry(struct inode *dir, struct inode *inode,
+ struct dentry *dentry, s32 type);
/* file.c */
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index f708c45d5f66..29f11e10a7c7 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -420,24 +420,51 @@ affs_mode_to_prot(struct inode *inode)
u32 prot = AFFS_I(inode)->i_protect;
umode_t mode = inode->i_mode;
+ /*
+ * First, clear all RWED bits for owner, group, other.
+ * Then, recalculate them afresh.
+ *
+ * We'll always clear the delete-inhibit bit for the owner, as that is
+ * the classic single-user mode AmigaOS protection bit and we need to
+ * stay compatible with all scenarios.
+ *
+ * Since multi-user AmigaOS is an extension, we'll only set the
+ * delete-allow bit if any of the other bits in the same user class
+ * (group/other) are used.
+ */
+ prot &= ~(FIBF_NOEXECUTE | FIBF_NOREAD
+ | FIBF_NOWRITE | FIBF_NODELETE
+ | FIBF_GRP_EXECUTE | FIBF_GRP_READ
+ | FIBF_GRP_WRITE | FIBF_GRP_DELETE
+ | FIBF_OTR_EXECUTE | FIBF_OTR_READ
+ | FIBF_OTR_WRITE | FIBF_OTR_DELETE);
+
+ /* Classic single-user AmigaOS flags. These are inverted. */
if (!(mode & 0100))
prot |= FIBF_NOEXECUTE;
if (!(mode & 0400))
prot |= FIBF_NOREAD;
if (!(mode & 0200))
prot |= FIBF_NOWRITE;
+
+ /* Multi-user extended flags. Not inverted. */
if (mode & 0010)
prot |= FIBF_GRP_EXECUTE;
if (mode & 0040)
prot |= FIBF_GRP_READ;
if (mode & 0020)
prot |= FIBF_GRP_WRITE;
+ if (mode & 0070)
+ prot |= FIBF_GRP_DELETE;
+
if (mode & 0001)
prot |= FIBF_OTR_EXECUTE;
if (mode & 0004)
prot |= FIBF_OTR_READ;
if (mode & 0002)
prot |= FIBF_OTR_WRITE;
+ if (mode & 0007)
+ prot |= FIBF_OTR_DELETE;
AFFS_I(inode)->i_protect = prot;
}
diff --git a/fs/affs/file.c b/fs/affs/file.c
index a85817f54483..cefa222f7881 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -14,6 +14,7 @@
*/
#include <linux/uio.h>
+#include <linux/blkdev.h>
#include "affs.h"
static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext);
@@ -374,9 +375,9 @@ static int affs_writepage(struct page *page, struct writeback_control *wbc)
return block_write_full_page(page, affs_get_block, wbc);
}
-static int affs_readpage(struct file *file, struct page *page)
+static int affs_read_folio(struct file *file, struct folio *folio)
{
- return block_read_full_page(page, affs_get_block);
+ return block_read_full_folio(folio, affs_get_block);
}
static void affs_write_failed(struct address_space *mapping, loff_t to)
@@ -413,13 +414,13 @@ affs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
}
static int affs_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
+ loff_t pos, unsigned len,
struct page **pagep, void **fsdata)
{
int ret;
*pagep = NULL;
- ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata,
affs_get_block,
&AFFS_I(mapping->host)->mmu_private);
if (unlikely(ret))
@@ -428,16 +429,36 @@ static int affs_write_begin(struct file *file, struct address_space *mapping,
return ret;
}
+static int affs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned int len, unsigned int copied,
+ struct page *page, void *fsdata)
+{
+ struct inode *inode = mapping->host;
+ int ret;
+
+ ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+
+ /* Clear Archived bit on file writes, as AmigaOS would do */
+ if (AFFS_I(inode)->i_protect & FIBF_ARCHIVED) {
+ AFFS_I(inode)->i_protect &= ~FIBF_ARCHIVED;
+ mark_inode_dirty(inode);
+ }
+
+ return ret;
+}
+
static sector_t _affs_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping,block,affs_get_block);
}
const struct address_space_operations affs_aops = {
- .readpage = affs_readpage,
+ .dirty_folio = block_dirty_folio,
+ .invalidate_folio = block_invalidate_folio,
+ .read_folio = affs_read_folio,
.writepage = affs_writepage,
.write_begin = affs_write_begin,
- .write_end = generic_write_end,
+ .write_end = affs_write_end,
.direct_IO = affs_direct_IO,
.bmap = _affs_bmap
};
@@ -505,7 +526,6 @@ affs_do_readpage_ofs(struct page *page, unsigned to, int create)
struct inode *inode = page->mapping->host;
struct super_block *sb = inode->i_sb;
struct buffer_head *bh;
- char *data;
unsigned pos = 0;
u32 bidx, boff, bsize;
u32 tmp;
@@ -524,15 +544,12 @@ affs_do_readpage_ofs(struct page *page, unsigned to, int create)
return PTR_ERR(bh);
tmp = min(bsize - boff, to - pos);
BUG_ON(pos + tmp > to || tmp > bsize);
- data = kmap_atomic(page);
- memcpy(data + pos, AFFS_DATA(bh) + boff, tmp);
- kunmap_atomic(data);
+ memcpy_to_page(page, pos, AFFS_DATA(bh) + boff, tmp);
affs_brelse(bh);
bidx++;
pos += tmp;
boff = 0;
}
- flush_dcache_page(page);
return 0;
}
@@ -608,8 +625,9 @@ out:
}
static int
-affs_readpage_ofs(struct file *file, struct page *page)
+affs_read_folio_ofs(struct file *file, struct folio *folio)
{
+ struct page *page = &folio->page;
struct inode *inode = page->mapping->host;
u32 to;
int err;
@@ -629,7 +647,7 @@ affs_readpage_ofs(struct file *file, struct page *page)
}
static int affs_write_begin_ofs(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
+ loff_t pos, unsigned len,
struct page **pagep, void **fsdata)
{
struct inode *inode = mapping->host;
@@ -649,7 +667,7 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping
}
index = pos >> PAGE_SHIFT;
- page = grab_cache_page_write_begin(mapping, index, flags);
+ page = grab_cache_page_write_begin(mapping, index);
if (!page)
return -ENOMEM;
*pagep = page;
@@ -794,6 +812,12 @@ done:
if (tmp > inode->i_size)
inode->i_size = AFFS_I(inode)->mmu_private = tmp;
+ /* Clear Archived bit on file writes, as AmigaOS would do */
+ if (AFFS_I(inode)->i_protect & FIBF_ARCHIVED) {
+ AFFS_I(inode)->i_protect &= ~FIBF_ARCHIVED;
+ mark_inode_dirty(inode);
+ }
+
err_first_bh:
unlock_page(page);
put_page(page);
@@ -808,7 +832,9 @@ err_bh:
}
const struct address_space_operations affs_aops_ofs = {
- .readpage = affs_readpage_ofs,
+ .dirty_folio = block_dirty_folio,
+ .invalidate_folio = block_invalidate_folio,
+ .read_folio = affs_read_folio_ofs,
//.writepage = affs_writepage_ofs,
.write_begin = affs_write_begin_ofs,
.write_end = affs_write_end_ofs
@@ -858,7 +884,7 @@ affs_truncate(struct inode *inode)
loff_t isize = inode->i_size;
int res;
- res = mapping->a_ops->write_begin(NULL, mapping, isize, 0, 0, &page, &fsdata);
+ res = mapping->a_ops->write_begin(NULL, mapping, isize, 0, &page, &fsdata);
if (!res)
res = mapping->a_ops->write_end(NULL, mapping, isize, 0, 0, page, fsdata);
else
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index a346cf7659f1..2352a75bd9d6 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -93,7 +93,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
case ST_ROOT:
inode->i_uid = sbi->s_uid;
inode->i_gid = sbi->s_gid;
- /* fall through */
+ fallthrough;
case ST_USERDIR:
if (be32_to_cpu(tail->stype) == ST_USERDIR ||
affs_test_opt(sbi->s_flags, SF_SETMODE)) {
@@ -216,14 +216,15 @@ affs_write_inode(struct inode *inode, struct writeback_control *wbc)
}
int
-affs_notify_change(struct dentry *dentry, struct iattr *attr)
+affs_notify_change(struct user_namespace *mnt_userns, struct dentry *dentry,
+ struct iattr *attr)
{
struct inode *inode = d_inode(dentry);
int error;
pr_debug("notify_change(%lu,0x%x)\n", inode->i_ino, attr->ia_valid);
- error = setattr_prepare(dentry, attr);
+ error = setattr_prepare(&init_user_ns, dentry, attr);
if (error)
goto out;
@@ -249,7 +250,7 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr)
affs_truncate(inode);
}
- setattr_copy(inode, attr);
+ setattr_copy(&init_user_ns, inode, attr);
mark_inode_dirty(inode);
if (attr->ia_valid & ATTR_MODE)
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 41c5749f4db7..bcab18956b4f 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -242,7 +242,8 @@ affs_unlink(struct inode *dir, struct dentry *dentry)
}
int
-affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
+affs_create(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode, bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;
@@ -273,7 +274,8 @@ affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
}
int
-affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+affs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode)
{
struct inode *inode;
int error;
@@ -311,7 +313,8 @@ affs_rmdir(struct inode *dir, struct dentry *dentry)
}
int
-affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
+affs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, const char *symname)
{
struct super_block *sb = dir->i_sb;
struct buffer_head *bh;
@@ -460,8 +463,10 @@ affs_xrename(struct inode *old_dir, struct dentry *old_dentry,
return -EIO;
bh_new = affs_bread(sb, d_inode(new_dentry)->i_ino);
- if (!bh_new)
+ if (!bh_new) {
+ affs_brelse(bh_old);
return -EIO;
+ }
/* Remove old header from its parent directory. */
affs_lock_dir(old_dir);
@@ -498,9 +503,9 @@ done:
return retval;
}
-int affs_rename2(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry,
- unsigned int flags)
+int affs_rename2(struct user_namespace *mnt_userns, struct inode *old_dir,
+ struct dentry *old_dentry, struct inode *new_dir,
+ struct dentry *new_dentry, unsigned int flags)
{
if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE))
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 47107c6712a6..58b391446ae1 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -100,7 +100,7 @@ static struct inode *affs_alloc_inode(struct super_block *sb)
{
struct affs_inode_info *i;
- i = kmem_cache_alloc(affs_inode_cachep, GFP_KERNEL);
+ i = alloc_inode_sb(sb, affs_inode_cachep, GFP_KERNEL);
if (!i)
return NULL;
@@ -276,7 +276,7 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved,
char *vol = match_strdup(&args[0]);
if (!vol)
return 0;
- strlcpy(volume, vol, 32);
+ strscpy(volume, vol, 32);
kfree(vol);
break;
}
@@ -389,7 +389,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
* blocks, we will have to change it.
*/
- size = i_size_read(sb->s_bdev->bd_inode) >> 9;
+ size = bdev_nr_sectors(sb->s_bdev);
pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size);
affs_set_blocksize(sb, PAGE_SIZE);
@@ -474,7 +474,7 @@ got_root:
case MUFS_INTLFFS:
case MUFS_DCFFS:
affs_set_opt(sbi->s_flags, SF_MUFS);
- /* fall thru */
+ fallthrough;
case FS_INTLFFS:
case FS_DCFFS:
affs_set_opt(sbi->s_flags, SF_INTL);
@@ -486,7 +486,7 @@ got_root:
break;
case MUFS_OFS:
affs_set_opt(sbi->s_flags, SF_MUFS);
- /* fall through */
+ fallthrough;
case FS_OFS:
affs_set_opt(sbi->s_flags, SF_OFS);
sb->s_flags |= SB_NOEXEC;
@@ -494,7 +494,7 @@ got_root:
case MUFS_DCOFS:
case MUFS_INTLOFS:
affs_set_opt(sbi->s_flags, SF_MUFS);
- /* fall through */
+ fallthrough;
case FS_DCOFS:
case FS_INTLOFS:
affs_set_opt(sbi->s_flags, SF_INTL);
@@ -620,8 +620,7 @@ affs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_blocks = AFFS_SB(sb)->s_partition_size - AFFS_SB(sb)->s_reserved;
buf->f_bfree = free;
buf->f_bavail = free;
- buf->f_fsid.val[0] = (u32)id;
- buf->f_fsid.val[1] = (u32)(id >> 32);
+ buf->f_fsid = u64_to_fsid(id);
buf->f_namelen = AFFSNAMEMAX;
return 0;
}
diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c
index a7531b26e8f0..31d6446dc166 100644
--- a/fs/affs/symlink.c
+++ b/fs/affs/symlink.c
@@ -11,8 +11,9 @@
#include "affs.h"
-static int affs_symlink_readpage(struct file *file, struct page *page)
+static int affs_symlink_read_folio(struct file *file, struct folio *folio)
{
+ struct page *page = &folio->page;
struct buffer_head *bh;
struct inode *inode = page->mapping->host;
char *link = page_address(page);
@@ -67,7 +68,7 @@ fail:
}
const struct address_space_operations affs_symlink_aops = {
- .readpage = affs_symlink_readpage,
+ .read_folio = affs_symlink_read_folio,
};
const struct inode_operations affs_symlink_inode_operations = {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.