Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 155 insertions, 0 deletions

diff --git a/fs/affs/dir.c b/fs/affs/dir.c
new file mode 100644
index 000000000000..548efd0ee98c
--- /dev/null
+++ b/fs/affs/dir.c
@@ -0,0 +1,155 @@
+/*
+ *  linux/fs/affs/dir.c
+ *
+ *  (c) 1996  Hans-Joachim Widmaier - Rewritten
+ *
+ *  (C) 1993  Ray Burr - Modified for Amiga FFS filesystem.
+ *
+ *  (C) 1992  Eric Youngdale Modified for ISO 9660 filesystem.
+ *
+ *  (C) 1991  Linus Torvalds - minix filesystem
+ *
+ *  affs directory handling functions
+ *
+ */
+
+#include "affs.h"
+
+static int affs_readdir(struct file *, void *, filldir_t);
+
+struct file_operations affs_dir_operations = {
+	.read		= generic_read_dir,
+	.readdir	= affs_readdir,
+	.fsync		= file_fsync,
+};
+
+/*
+ * directories can handle most operations...
+ */
+struct inode_operations affs_dir_inode_operations = {
+	.create		= affs_create,
+	.lookup		= affs_lookup,
+	.link		= affs_link,
+	.unlink		= affs_unlink,
+	.symlink	= affs_symlink,
+	.mkdir		= affs_mkdir,
+	.rmdir		= affs_rmdir,
+	.rename		= affs_rename,
+	.setattr	= affs_notify_change,
+};
+
+static int
+affs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+{
+	struct inode		*inode = filp->f_dentry->d_inode;
+	struct super_block	*sb = inode->i_sb;
+	struct buffer_head	*dir_bh;
+	struct buffer_head	*fh_bh;
+	unsigned char		*name;
+	int			 namelen;
+	u32			 i;
+	int			 hash_pos;
+	int			 chain_pos;
+	u32			 f_pos;
+	u32			 ino;
+	int			 stored;
+	int			 res;
+
+	pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",inode->i_ino,(unsigned long)filp->f_pos);
+
+	stored = 0;
+	res    = -EIO;
+	dir_bh = NULL;
+	fh_bh  = NULL;
+	f_pos  = filp->f_pos;
+
+	if (f_pos == 0) {
+		filp->private_data = (void *)0;
+		if (filldir(dirent, ".", 1, f_pos, inode->i_ino, DT_DIR) < 0)
+			return 0;
+		filp->f_pos = f_pos = 1;
+		stored++;
+	}
+	if (f_pos == 1) {
+		if (filldir(dirent, "..", 2, f_pos, parent_ino(filp->f_dentry), DT_DIR) < 0)
+			return stored;
+		filp->f_pos = f_pos = 2;
+		stored++;
+	}
+
+	affs_lock_dir(inode);
+	chain_pos = (f_pos - 2) & 0xffff;
+	hash_pos  = (f_pos - 2) >> 16;
+	if (chain_pos == 0xffff) {
+		affs_warning(sb, "readdir", "More than 65535 entries in chain");
+		chain_pos = 0;
+		hash_pos++;
+		filp->f_pos = ((hash_pos << 16) | chain_pos) + 2;
+	}
+	dir_bh = affs_bread(sb, inode->i_ino);
+	if (!dir_bh)
+		goto readdir_out;
+
+	/* If the directory hasn't changed since the last call to readdir(),
+	 * we can jump directly to where we left off.
+	 */
+	ino = (u32)(long)filp->private_data;
+	if (ino && filp->f_version == inode->i_version) {
+		pr_debug("AFFS: readdir() left off=%d\n", ino);
+		goto inside;
+	}
+
+	ino = be32_to_cpu(AFFS_HEAD(dir_bh)->table[hash_pos]);
+	for (i = 0; ino && i < chain_pos; i++) {
+		fh_bh = affs_bread(sb, ino);
+		if (!fh_bh) {
+			affs_error(sb, "readdir","Cannot read block %d", i);
+			goto readdir_out;
+		}
+		ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
+		affs_brelse(fh_bh);
+		fh_bh = NULL;
+	}
+	if (ino)
+		goto inside;
+	hash_pos++;
+
+	for (; hash_pos < AFFS_SB(sb)->s_hashsize; hash_pos++) {
+		ino = be32_to_cpu(AFFS_HEAD(dir_bh)->table[hash_pos]);
+		if (!ino)
+			continue;
+		f_pos = (hash_pos << 16) + 2;
+inside:
+		do {
+			fh_bh = affs_bread(sb, ino);
+			if (!fh_bh) {
+				affs_error(sb, "readdir","Cannot read block %d", ino);
+				goto readdir_done;
+			}
+
+			namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
+			name = AFFS_TAIL(sb, fh_bh)->name + 1;
+			pr_debug("AFFS: readdir(): filldir(\"%.*s\", ino=%u), hash=%d, f_pos=%x\n",
+				 namelen, name, ino, hash_pos, f_pos);
+			if (filldir(dirent, name, namelen, f_pos, ino, DT_UNKNOWN) < 0)
+				goto readdir_done;
+			stored++;
+			f_pos++;
+			ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
+			affs_brelse(fh_bh);
+			fh_bh = NULL;
+		} while (ino);
+	}
+readdir_done:
+	filp->f_pos = f_pos;
+	filp->f_version = inode->i_version;
+	filp->private_data = (void *)(long)ino;
+	res = stored;
+
+readdir_out:
+	affs_brelse(dir_bh);
+	affs_brelse(fh_bh);
+	affs_unlock_dir(inode);
+	pr_debug("AFFS: readdir()=%d\n", stored);
+	return res;
+}