Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
new file mode 100644
index 0000000..7aa6f20
--- /dev/null
+++ b/fs/affs/inode.c
@@ -0,0 +1,411 @@
+/*
+ * linux/fs/affs/inode.c
+ *
+ * (c) 1996 Hans-Joachim Widmaier - Rewritten
+ *
+ * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem.
+ *
+ * (C) 1992 Eric Youngdale Modified for ISO9660 filesystem.
+ *
+ * (C) 1991 Linus Torvalds - minix filesystem
+ */
+
+#include "affs.h"
+
+extern struct inode_operations affs_symlink_inode_operations;
+extern struct timezone sys_tz;
+
+void
+affs_read_inode(struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct affs_sb_info *sbi = AFFS_SB(sb);
+ struct buffer_head *bh;
+ struct affs_head *head;
+ struct affs_tail *tail;
+ u32 block;
+ u32 size;
+ u32 prot;
+ u16 id;
+
+ pr_debug("AFFS: read_inode(%lu)\n",inode->i_ino);
+
+ block = inode->i_ino;
+ bh = affs_bread(sb, block);
+ if (!bh) {
+ affs_warning(sb, "read_inode", "Cannot read block %d", block);
+ goto bad_inode;
+ }
+ if (affs_checksum_block(sb, bh) || be32_to_cpu(AFFS_HEAD(bh)->ptype) != T_SHORT) {
+ affs_warning(sb,"read_inode",
+ "Checksum or type (ptype=%d) error on inode %d",
+ AFFS_HEAD(bh)->ptype, block);
+ goto bad_inode;
+ }
+
+ head = AFFS_HEAD(bh);
+ tail = AFFS_TAIL(sb, bh);
+ prot = be32_to_cpu(tail->protect);
+
+ inode->i_size = 0;
+ inode->i_nlink = 1;
+ inode->i_mode = 0;
+ AFFS_I(inode)->i_extcnt = 1;
+ AFFS_I(inode)->i_ext_last = ~1;
+ AFFS_I(inode)->i_protect = prot;
+ AFFS_I(inode)->i_opencnt = 0;
+ AFFS_I(inode)->i_blkcnt = 0;
+ AFFS_I(inode)->i_lc = NULL;
+ AFFS_I(inode)->i_lc_size = 0;
+ AFFS_I(inode)->i_lc_shift = 0;
+ AFFS_I(inode)->i_lc_mask = 0;
+ AFFS_I(inode)->i_ac = NULL;
+ AFFS_I(inode)->i_ext_bh = NULL;
+ AFFS_I(inode)->mmu_private = 0;
+ AFFS_I(inode)->i_lastalloc = 0;
+ AFFS_I(inode)->i_pa_cnt = 0;
+
+ if (sbi->s_flags & SF_SETMODE)
+ inode->i_mode = sbi->s_mode;
+ else
+ inode->i_mode = prot_to_mode(prot);
+
+ id = be16_to_cpu(tail->uid);
+ if (id == 0 || sbi->s_flags & SF_SETUID)
+ inode->i_uid = sbi->s_uid;
+ else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
+ inode->i_uid = 0;
+ else
+ inode->i_uid = id;
+
+ id = be16_to_cpu(tail->gid);
+ if (id == 0 || sbi->s_flags & SF_SETGID)
+ inode->i_gid = sbi->s_gid;
+ else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
+ inode->i_gid = 0;
+ else
+ inode->i_gid = id;
+
+ switch (be32_to_cpu(tail->stype)) {
+ case ST_ROOT:
+ inode->i_uid = sbi->s_uid;
+ inode->i_gid = sbi->s_gid;
+ /* fall through */
+ case ST_USERDIR:
+ if (be32_to_cpu(tail->stype) == ST_USERDIR ||
+ sbi->s_flags & SF_SETMODE) {
+ if (inode->i_mode & S_IRUSR)
+ inode->i_mode |= S_IXUSR;
+ if (inode->i_mode & S_IRGRP)
+ inode->i_mode |= S_IXGRP;
+ if (inode->i_mode & S_IROTH)
+ inode->i_mode |= S_IXOTH;
+ inode->i_mode |= S_IFDIR;
+ } else
+ inode->i_mode = S_IRUGO | S_IXUGO | S_IWUSR | S_IFDIR;
+ if (tail->link_chain)
+ inode->i_nlink = 2;
+ /* Maybe it should be controlled by mount parameter? */
+ //inode->i_mode |= S_ISVTX;
+ inode->i_op = &affs_dir_inode_operations;
+ inode->i_fop = &affs_dir_operations;
+ break;
+ case ST_LINKDIR:
+#if 0
+ affs_warning(sb, "read_inode", "inode is LINKDIR");
+ goto bad_inode;
+#else
+ inode->i_mode |= S_IFDIR;
+ inode->i_op = NULL;
+ inode->i_fop = NULL;
+ break;
+#endif
+ case ST_LINKFILE:
+ affs_warning(sb, "read_inode", "inode is LINKFILE");
+ goto bad_inode;
+ case ST_FILE:
+ size = be32_to_cpu(tail->size);
+ inode->i_mode |= S_IFREG;
+ AFFS_I(inode)->mmu_private = inode->i_size = size;
+ if (inode->i_size) {
+ AFFS_I(inode)->i_blkcnt = (size - 1) /
+ sbi->s_data_blksize + 1;
+ AFFS_I(inode)->i_extcnt = (AFFS_I(inode)->i_blkcnt - 1) /
+ sbi->s_hashsize + 1;
+ }
+ if (tail->link_chain)
+ inode->i_nlink = 2;
+ inode->i_mapping->a_ops = (sbi->s_flags & SF_OFS) ? &affs_aops_ofs : &affs_aops;
+ inode->i_op = &affs_file_inode_operations;
+ inode->i_fop = &affs_file_operations;
+ break;
+ case ST_SOFTLINK:
+ inode->i_mode |= S_IFLNK;
+ inode->i_op = &affs_symlink_inode_operations;
+ inode->i_data.a_ops = &affs_symlink_aops;
+ break;
+ }
+
+ inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec
+ = (be32_to_cpu(tail->change.days) * (24 * 60 * 60) +
+ be32_to_cpu(tail->change.mins) * 60 +
+ be32_to_cpu(tail->change.ticks) / 50 +
+ ((8 * 365 + 2) * 24 * 60 * 60)) +
+ sys_tz.tz_minuteswest * 60;
+ inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0;
+ affs_brelse(bh);
+ return;
+
+bad_inode:
+ make_bad_inode(inode);
+ affs_brelse(bh);
+ return;
+}
+
+int
+affs_write_inode(struct inode *inode, int unused)
+{
+ struct super_block *sb = inode->i_sb;
+ struct buffer_head *bh;
+ struct affs_tail *tail;
+ uid_t uid;
+ gid_t gid;
+
+ pr_debug("AFFS: write_inode(%lu)\n",inode->i_ino);
+
+ if (!inode->i_nlink)
+ // possibly free block
+ return 0;
+ bh = affs_bread(sb, inode->i_ino);
+ if (!bh) {
+ affs_error(sb,"write_inode","Cannot read block %lu",inode->i_ino);
+ return -EIO;
+ }
+ tail = AFFS_TAIL(sb, bh);
+ if (tail->stype == cpu_to_be32(ST_ROOT)) {
+ secs_to_datestamp(inode->i_mtime.tv_sec,&AFFS_ROOT_TAIL(sb, bh)->root_change);
+ } else {
+ tail->protect = cpu_to_be32(AFFS_I(inode)->i_protect);
+ tail->size = cpu_to_be32(inode->i_size);
+ secs_to_datestamp(inode->i_mtime.tv_sec,&tail->change);
+ if (!(inode->i_ino == AFFS_SB(sb)->s_root_block)) {
+ uid = inode->i_uid;
+ gid = inode->i_gid;
+ if (AFFS_SB(sb)->s_flags & SF_MUFS) {
+ if (inode->i_uid == 0 || inode->i_uid == 0xFFFF)
+ uid = inode->i_uid ^ ~0;
+ if (inode->i_gid == 0 || inode->i_gid == 0xFFFF)
+ gid = inode->i_gid ^ ~0;
+ }
+ if (!(AFFS_SB(sb)->s_flags & SF_SETUID))
+ tail->uid = cpu_to_be16(uid);
+ if (!(AFFS_SB(sb)->s_flags & SF_SETGID))
+ tail->gid = cpu_to_be16(gid);
+ }
+ }
+ affs_fix_checksum(sb, bh);
+ mark_buffer_dirty_inode(bh, inode);
+ affs_brelse(bh);
+ affs_free_prealloc(inode);
+ return 0;
+}
+
+int
+affs_notify_change(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ pr_debug("AFFS: notify_change(%lu,0x%x)\n",inode->i_ino,attr->ia_valid);
+
+ error = inode_change_ok(inode,attr);
+ if (error)
+ goto out;
+
+ if (((attr->ia_valid & ATTR_UID) && (AFFS_SB(inode->i_sb)->s_flags & SF_SETUID)) ||
+ ((attr->ia_valid & ATTR_GID) && (AFFS_SB(inode->i_sb)->s_flags & SF_SETGID)) ||
+ ((attr->ia_valid & ATTR_MODE) &&
+ (AFFS_SB(inode->i_sb)->s_flags & (SF_SETMODE | SF_IMMUTABLE)))) {
+ if (!(AFFS_SB(inode->i_sb)->s_flags & SF_QUIET))
+ error = -EPERM;
+ goto out;
+ }
+
+ error = inode_setattr(inode, attr);
+ if (!error && (attr->ia_valid & ATTR_MODE))
+ mode_to_prot(inode);
+out:
+ return error;
+}
+
+void
+affs_put_inode(struct inode *inode)
+{
+ pr_debug("AFFS: put_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
+ affs_free_prealloc(inode);
+ if (atomic_read(&inode->i_count) == 1) {
+ down(&inode->i_sem);
+ if (inode->i_size != AFFS_I(inode)->mmu_private)
+ affs_truncate(inode);
+ up(&inode->i_sem);
+ }
+}
+
+void
+affs_delete_inode(struct inode *inode)
+{
+ pr_debug("AFFS: delete_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
+ inode->i_size = 0;
+ if (S_ISREG(inode->i_mode))
+ affs_truncate(inode);
+ clear_inode(inode);
+ affs_free_block(inode->i_sb, inode->i_ino);
+}
+
+void
+affs_clear_inode(struct inode *inode)
+{
+ unsigned long cache_page = (unsigned long) AFFS_I(inode)->i_lc;
+
+ pr_debug("AFFS: clear_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink);
+ if (cache_page) {
+ pr_debug("AFFS: freeing ext cache\n");
+ AFFS_I(inode)->i_lc = NULL;
+ AFFS_I(inode)->i_ac = NULL;
+ free_page(cache_page);
+ }
+ affs_brelse(AFFS_I(inode)->i_ext_bh);
+ AFFS_I(inode)->i_ext_last = ~1;
+ AFFS_I(inode)->i_ext_bh = NULL;
+}
+
+struct inode *
+affs_new_inode(struct inode *dir)
+{
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode;
+ u32 block;
+ struct buffer_head *bh;
+
+ if (!(inode = new_inode(sb)))
+ goto err_inode;
+
+ if (!(block = affs_alloc_block(dir, dir->i_ino)))
+ goto err_block;
+
+ bh = affs_getzeroblk(sb, block);
+ if (!bh)
+ goto err_bh;
+ mark_buffer_dirty_inode(bh, inode);
+ affs_brelse(bh);
+
+ inode->i_uid = current->fsuid;
+ inode->i_gid = current->fsgid;
+ inode->i_ino = block;
+ inode->i_nlink = 1;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
+ AFFS_I(inode)->i_opencnt = 0;
+ AFFS_I(inode)->i_blkcnt = 0;
+ AFFS_I(inode)->i_lc = NULL;
+ AFFS_I(inode)->i_lc_size = 0;
+ AFFS_I(inode)->i_lc_shift = 0;
+ AFFS_I(inode)->i_lc_mask = 0;
+ AFFS_I(inode)->i_ac = NULL;
+ AFFS_I(inode)->i_ext_bh = NULL;
+ AFFS_I(inode)->mmu_private = 0;
+ AFFS_I(inode)->i_protect = 0;
+ AFFS_I(inode)->i_lastalloc = 0;
+ AFFS_I(inode)->i_pa_cnt = 0;
+ AFFS_I(inode)->i_extcnt = 1;
+ AFFS_I(inode)->i_ext_last = ~1;
+
+ insert_inode_hash(inode);
+
+ return inode;
+
+err_bh:
+ affs_free_block(sb, block);
+err_block:
+ iput(inode);
+err_inode:
+ return NULL;
+}
+
+/*
+ * Add an entry to a directory. Create the header block
+ * and insert it into the hash table.
+ */
+
+int
+affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s32 type)
+{
+ struct super_block *sb = dir->i_sb;
+ struct buffer_head *inode_bh = NULL;
+ struct buffer_head *bh = NULL;
+ u32 block = 0;
+ int retval;
+
+ pr_debug("AFFS: add_entry(dir=%u, inode=%u, \"%*s\", type=%d)\n", (u32)dir->i_ino,
+ (u32)inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name, type);
+
+ retval = -EIO;
+ bh = affs_bread(sb, inode->i_ino);
+ if (!bh)
+ goto done;
+
+ affs_lock_link(inode);
+ switch (type) {
+ case ST_LINKFILE:
+ case ST_LINKDIR:
+ inode_bh = bh;
+ retval = -ENOSPC;
+ block = affs_alloc_block(dir, dir->i_ino);
+ if (!block)
+ goto err;
+ retval = -EIO;
+ bh = affs_getzeroblk(sb, block);
+ if (!bh)
+ goto err;
+ break;
+ default:
+ break;
+ }
+
+ AFFS_HEAD(bh)->ptype = cpu_to_be32(T_SHORT);
+ AFFS_HEAD(bh)->key = cpu_to_be32(bh->b_blocknr);
+ affs_copy_name(AFFS_TAIL(sb, bh)->name, dentry);
+ AFFS_TAIL(sb, bh)->stype = cpu_to_be32(type);
+ AFFS_TAIL(sb, bh)->parent = cpu_to_be32(dir->i_ino);
+
+ if (inode_bh) {
+ __be32 chain;
+ chain = AFFS_TAIL(sb, inode_bh)->link_chain;
+ AFFS_TAIL(sb, bh)->original = cpu_to_be32(inode->i_ino);
+ AFFS_TAIL(sb, bh)->link_chain = chain;
+ AFFS_TAIL(sb, inode_bh)->link_chain = cpu_to_be32(block);
+ affs_adjust_checksum(inode_bh, block - be32_to_cpu(chain));
+ mark_buffer_dirty_inode(inode_bh, inode);
+ inode->i_nlink = 2;
+ atomic_inc(&inode->i_count);
+ }
+ affs_fix_checksum(sb, bh);
+ mark_buffer_dirty_inode(bh, inode);
+ dentry->d_fsdata = (void *)(long)bh->b_blocknr;
+
+ affs_lock_dir(dir);
+ retval = affs_insert_hash(dir, bh);
+ mark_buffer_dirty_inode(bh, inode);
+ affs_unlock_dir(dir);
+ affs_unlock_link(inode);
+
+ d_instantiate(dentry, inode);
+done:
+ affs_brelse(inode_bh);
+ affs_brelse(bh);
+ return retval;
+err:
+ if (block)
+ affs_free_block(sb, block);
+ affs_unlock_link(inode);
+ goto done;
+}