aboutsummaryrefslogtreecommitdiffstats
path: root/fs/affs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/affs')
-rw-r--r--fs/affs/affs.h4
-rw-r--r--fs/affs/amigaffs.h144
-rw-r--r--fs/affs/dir.c2
-rw-r--r--fs/affs/file.c10
-rw-r--r--fs/affs/inode.c1
-rw-r--r--fs/affs/namei.c87
6 files changed, 226 insertions, 22 deletions
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 2f8bab390d13..773749be8290 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -7,7 +7,7 @@
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/buffer_head.h>
-#include <linux/amigaffs.h>
+#include "amigaffs.h"
#include <linux/mutex.h>
#include <linux/workqueue.h>
@@ -173,7 +173,7 @@ 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_rename(struct inode *old_dir, struct dentry *old_dentry,
+extern int affs_rename2(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags);
diff --git a/fs/affs/amigaffs.h b/fs/affs/amigaffs.h
new file mode 100644
index 000000000000..43b41c06aa37
--- /dev/null
+++ b/fs/affs/amigaffs.h
@@ -0,0 +1,144 @@
+#ifndef AMIGAFFS_H
+#define AMIGAFFS_H
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+#define FS_OFS 0x444F5300
+#define FS_FFS 0x444F5301
+#define FS_INTLOFS 0x444F5302
+#define FS_INTLFFS 0x444F5303
+#define FS_DCOFS 0x444F5304
+#define FS_DCFFS 0x444F5305
+#define MUFS_FS 0x6d754653 /* 'muFS' */
+#define MUFS_OFS 0x6d754600 /* 'muF\0' */
+#define MUFS_FFS 0x6d754601 /* 'muF\1' */
+#define MUFS_INTLOFS 0x6d754602 /* 'muF\2' */
+#define MUFS_INTLFFS 0x6d754603 /* 'muF\3' */
+#define MUFS_DCOFS 0x6d754604 /* 'muF\4' */
+#define MUFS_DCFFS 0x6d754605 /* 'muF\5' */
+
+#define T_SHORT 2
+#define T_LIST 16
+#define T_DATA 8
+
+#define ST_LINKFILE -4
+#define ST_FILE -3
+#define ST_ROOT 1
+#define ST_USERDIR 2
+#define ST_SOFTLINK 3
+#define ST_LINKDIR 4
+
+#define AFFS_ROOT_BMAPS 25
+
+struct affs_date {
+ __be32 days;
+ __be32 mins;
+ __be32 ticks;
+};
+
+struct affs_short_date {
+ __be16 days;
+ __be16 mins;
+ __be16 ticks;
+};
+
+struct affs_root_head {
+ __be32 ptype;
+ __be32 spare1;
+ __be32 spare2;
+ __be32 hash_size;
+ __be32 spare3;
+ __be32 checksum;
+ __be32 hashtable[1];
+};
+
+struct affs_root_tail {
+ __be32 bm_flag;
+ __be32 bm_blk[AFFS_ROOT_BMAPS];
+ __be32 bm_ext;
+ struct affs_date root_change;
+ u8 disk_name[32];
+ __be32 spare1;
+ __be32 spare2;
+ struct affs_date disk_change;
+ struct affs_date disk_create;
+ __be32 spare3;
+ __be32 spare4;
+ __be32 dcache;
+ __be32 stype;
+};
+
+struct affs_head {
+ __be32 ptype;
+ __be32 key;
+ __be32 block_count;
+ __be32 spare1;
+ __be32 first_data;
+ __be32 checksum;
+ __be32 table[1];
+};
+
+struct affs_tail {
+ __be32 spare1;
+ __be16 uid;
+ __be16 gid;
+ __be32 protect;
+ __be32 size;
+ u8 comment[92];
+ struct affs_date change;
+ u8 name[32];
+ __be32 spare2;
+ __be32 original;
+ __be32 link_chain;
+ __be32 spare[5];
+ __be32 hash_chain;
+ __be32 parent;
+ __be32 extension;
+ __be32 stype;
+};
+
+struct slink_front
+{
+ __be32 ptype;
+ __be32 key;
+ __be32 spare1[3];
+ __be32 checksum;
+ u8 symname[1]; /* depends on block size */
+};
+
+struct affs_data_head
+{
+ __be32 ptype;
+ __be32 key;
+ __be32 sequence;
+ __be32 size;
+ __be32 next;
+ __be32 checksum;
+ u8 data[1]; /* depends on block size */
+};
+
+/* Permission bits */
+
+#define FIBF_OTR_READ 0x8000
+#define FIBF_OTR_WRITE 0x4000
+#define FIBF_OTR_EXECUTE 0x2000
+#define FIBF_OTR_DELETE 0x1000
+#define FIBF_GRP_READ 0x0800
+#define FIBF_GRP_WRITE 0x0400
+#define FIBF_GRP_EXECUTE 0x0200
+#define FIBF_GRP_DELETE 0x0100
+
+#define FIBF_HIDDEN 0x0080
+#define FIBF_SCRIPT 0x0040
+#define FIBF_PURE 0x0020 /* no use under linux */
+#define FIBF_ARCHIVED 0x0010 /* never set, always cleared on write */
+#define FIBF_NOREAD 0x0008 /* 0 means allowed */
+#define FIBF_NOWRITE 0x0004 /* 0 means allowed */
+#define FIBF_NOEXECUTE 0x0002 /* 0 means allowed, ignored under linux */
+#define FIBF_NODELETE 0x0001 /* 0 means allowed */
+
+#define FIBF_OWNER 0x000F /* Bits pertaining to owner */
+#define FIBF_MASK 0xEE0E /* Bits modified by Linux */
+
+#endif
diff --git a/fs/affs/dir.c b/fs/affs/dir.c
index f1e7294381c5..591ecd7f3063 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -35,7 +35,7 @@ const struct inode_operations affs_dir_inode_operations = {
.symlink = affs_symlink,
.mkdir = affs_mkdir,
.rmdir = affs_rmdir,
- .rename = affs_rename,
+ .rename = affs_rename2,
.setattr = affs_notify_change,
};
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 0deec9cc2362..196ee7f6fdc4 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -499,7 +499,7 @@ affs_getemptyblk_ino(struct inode *inode, int block)
}
static int
-affs_do_readpage_ofs(struct page *page, unsigned to)
+affs_do_readpage_ofs(struct page *page, unsigned to, int create)
{
struct inode *inode = page->mapping->host;
struct super_block *sb = inode->i_sb;
@@ -518,7 +518,7 @@ affs_do_readpage_ofs(struct page *page, unsigned to)
boff = tmp % bsize;
while (pos < to) {
- bh = affs_bread_ino(inode, bidx, 0);
+ bh = affs_bread_ino(inode, bidx, create);
if (IS_ERR(bh))
return PTR_ERR(bh);
tmp = min(bsize - boff, to - pos);
@@ -620,7 +620,7 @@ affs_readpage_ofs(struct file *file, struct page *page)
memset(page_address(page) + to, 0, PAGE_SIZE - to);
}
- err = affs_do_readpage_ofs(page, to);
+ err = affs_do_readpage_ofs(page, to, 0);
if (!err)
SetPageUptodate(page);
unlock_page(page);
@@ -657,7 +657,7 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping
return 0;
/* XXX: inefficient but safe in the face of short writes */
- err = affs_do_readpage_ofs(page, PAGE_SIZE);
+ err = affs_do_readpage_ofs(page, PAGE_SIZE, 1);
if (err) {
unlock_page(page);
put_page(page);
@@ -679,7 +679,7 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
int written;
from = pos & (PAGE_SIZE - 1);
- to = pos + len;
+ to = from + len;
/*
* XXX: not sure if this can handle short copies (len < copied), but
* we don't have to, because the page should always be uptodate here,
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index abcc59899229..fd4ef3c40e40 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -140,6 +140,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
inode->i_fop = &affs_file_operations;
break;
case ST_SOFTLINK:
+ inode->i_size = strlen((char *)AFFS_HEAD(bh)->table);
inode->i_mode |= S_IFLNK;
inode_nohighmem(inode);
inode->i_op = &affs_symlink_inode_operations;
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 96dd1d09a273..46d3ace6761d 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -365,6 +365,7 @@ affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
symname++;
}
*p = 0;
+ inode->i_size = i + 1;
mark_buffer_dirty_inode(bh, inode);
affs_brelse(bh);
mark_inode_dirty(inode);
@@ -393,21 +394,14 @@ affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
return affs_add_entry(dir, inode, dentry, ST_LINKFILE);
}
-int
+static int
affs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry,
- unsigned int flags)
+ struct inode *new_dir, struct dentry *new_dentry)
{
struct super_block *sb = old_dir->i_sb;
struct buffer_head *bh = NULL;
int retval;
- if (flags & ~RENAME_NOREPLACE)
- return -EINVAL;
-
- pr_debug("%s(old=%lu,\"%pd\" to new=%lu,\"%pd\")\n", __func__,
- old_dir->i_ino, old_dentry, new_dir->i_ino, new_dentry);
-
retval = affs_check_name(new_dentry->d_name.name,
new_dentry->d_name.len,
affs_nofilenametruncate(old_dentry));
@@ -447,6 +441,76 @@ done:
return retval;
}
+static int
+affs_xrename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
+{
+
+ struct super_block *sb = old_dir->i_sb;
+ struct buffer_head *bh_old = NULL;
+ struct buffer_head *bh_new = NULL;
+ int retval;
+
+ bh_old = affs_bread(sb, d_inode(old_dentry)->i_ino);
+ if (!bh_old)
+ return -EIO;
+
+ bh_new = affs_bread(sb, d_inode(new_dentry)->i_ino);
+ if (!bh_new)
+ return -EIO;
+
+ /* Remove old header from its parent directory. */
+ affs_lock_dir(old_dir);
+ retval = affs_remove_hash(old_dir, bh_old);
+ affs_unlock_dir(old_dir);
+ if (retval)
+ goto done;
+
+ /* Remove new header from its parent directory. */
+ affs_lock_dir(new_dir);
+ retval = affs_remove_hash(new_dir, bh_new);
+ affs_unlock_dir(new_dir);
+ if (retval)
+ goto done;
+
+ /* Insert old into the new directory with the new name. */
+ affs_copy_name(AFFS_TAIL(sb, bh_old)->name, new_dentry);
+ affs_fix_checksum(sb, bh_old);
+ affs_lock_dir(new_dir);
+ retval = affs_insert_hash(new_dir, bh_old);
+ affs_unlock_dir(new_dir);
+
+ /* Insert new into the old directory with the old name. */
+ affs_copy_name(AFFS_TAIL(sb, bh_new)->name, old_dentry);
+ affs_fix_checksum(sb, bh_new);
+ affs_lock_dir(old_dir);
+ retval = affs_insert_hash(old_dir, bh_new);
+ affs_unlock_dir(old_dir);
+done:
+ mark_buffer_dirty_inode(bh_old, new_dir);
+ mark_buffer_dirty_inode(bh_new, old_dir);
+ affs_brelse(bh_old);
+ affs_brelse(bh_new);
+ return retval;
+}
+
+int affs_rename2(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))
+ return -EINVAL;
+
+ pr_debug("%s(old=%lu,\"%pd\" to new=%lu,\"%pd\")\n", __func__,
+ old_dir->i_ino, old_dentry, new_dir->i_ino, new_dentry);
+
+ if (flags & RENAME_EXCHANGE)
+ return affs_xrename(old_dir, old_dentry, new_dir, new_dentry);
+
+ return affs_rename(old_dir, old_dentry, new_dir, new_dentry);
+}
+
static struct dentry *affs_get_parent(struct dentry *child)
{
struct inode *parent;
@@ -477,11 +541,6 @@ static struct inode *affs_nfs_get_inode(struct super_block *sb, u64 ino,
if (IS_ERR(inode))
return ERR_CAST(inode);
- if (generation && inode->i_generation != generation) {
- iput(inode);
- return ERR_PTR(-ESTALE);
- }
-
return inode;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.