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, 250 insertions, 0 deletions

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
new file mode 100644
index 00000000000..4888c1fabbf
--- /dev/null
+++ b/fs/autofs/inode.c
@@ -0,0 +1,250 @@
+/* -*- linux-c -*- --------------------------------------------------------- *
+ *
+ * linux/fs/autofs/inode.c
+ *
+ *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
+ *
+ * This file is part of the Linux kernel and is made available under
+ * the terms of the GNU General Public License, version 2, or at your
+ * option, any later version, incorporated herein by reference.
+ *
+ * ------------------------------------------------------------------------- */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/file.h>
+#include <linux/parser.h>
+#include <linux/bitops.h>
+#include "autofs_i.h"
+#include <linux/module.h>
+
+static void autofs_put_super(struct super_block *sb)
+{
+	struct autofs_sb_info *sbi = autofs_sbi(sb);
+	unsigned int n;
+
+	if ( !sbi->catatonic )
+		autofs_catatonic_mode(sbi); /* Free wait queues, close pipe */
+
+	autofs_hash_nuke(&sbi->dirhash);
+	for ( n = 0 ; n < AUTOFS_MAX_SYMLINKS ; n++ ) {
+		if ( test_bit(n, sbi->symlink_bitmap) )
+			kfree(sbi->symlink[n].data);
+	}
+
+	kfree(sb->s_fs_info);
+
+	DPRINTK(("autofs: shutting down\n"));
+}
+
+static void autofs_read_inode(struct inode *inode);
+
+static struct super_operations autofs_sops = {
+	.read_inode	= autofs_read_inode,
+	.put_super	= autofs_put_super,
+	.statfs		= simple_statfs,
+};
+
+enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
+
+static match_table_t autofs_tokens = {
+	{Opt_fd, "fd=%u"},
+	{Opt_uid, "uid=%u"},
+	{Opt_gid, "gid=%u"},
+	{Opt_pgrp, "pgrp=%u"},
+	{Opt_minproto, "minproto=%u"},
+	{Opt_maxproto, "maxproto=%u"},
+	{Opt_err, NULL}
+};
+
+static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid, pid_t *pgrp, int *minproto, int *maxproto)
+{
+	char *p;
+	substring_t args[MAX_OPT_ARGS];
+	int option;
+
+	*uid = current->uid;
+	*gid = current->gid;
+	*pgrp = process_group(current);
+
+	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
+
+	*pipefd = -1;
+
+	if (!options)
+		return 1;
+
+	while ((p = strsep(&options, ",")) != NULL) {
+		int token;
+		if (!*p)
+			continue;
+
+		token = match_token(p, autofs_tokens, args);
+		switch (token) {
+		case Opt_fd:
+			if (match_int(&args[0], &option))
+				return 1;
+			*pipefd = option;
+			break;
+		case Opt_uid:
+			if (match_int(&args[0], &option))
+				return 1;
+			*uid = option;
+			break;
+		case Opt_gid:
+			if (match_int(&args[0], &option))
+				return 1;
+			*gid = option;
+			break;
+		case Opt_pgrp:
+			if (match_int(&args[0], &option))
+				return 1;
+			*pgrp = option;
+			break;
+		case Opt_minproto:
+			if (match_int(&args[0], &option))
+				return 1;
+			*minproto = option;
+			break;
+		case Opt_maxproto:
+			if (match_int(&args[0], &option))
+				return 1;
+			*maxproto = option;
+			break;
+		default:
+			return 1;
+		}
+	}
+	return (*pipefd < 0);
+}
+
+int autofs_fill_super(struct super_block *s, void *data, int silent)
+{
+	struct inode * root_inode;
+	struct dentry * root;
+	struct file * pipe;
+	int pipefd;
+	struct autofs_sb_info *sbi;
+	int minproto, maxproto;
+
+	sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
+	if ( !sbi )
+		goto fail_unlock;
+	memset(sbi, 0, sizeof(*sbi));
+	DPRINTK(("autofs: starting up, sbi = %p\n",sbi));
+
+	s->s_fs_info = sbi;
+	sbi->magic = AUTOFS_SBI_MAGIC;
+	sbi->catatonic = 0;
+	sbi->exp_timeout = 0;
+	sbi->oz_pgrp = process_group(current);
+	autofs_initialize_hash(&sbi->dirhash);
+	sbi->queues = NULL;
+	memset(sbi->symlink_bitmap, 0, sizeof(long)*AUTOFS_SYMLINK_BITMAP_LEN);
+	sbi->next_dir_ino = AUTOFS_FIRST_DIR_INO;
+	s->s_blocksize = 1024;
+	s->s_blocksize_bits = 10;
+	s->s_magic = AUTOFS_SUPER_MAGIC;
+	s->s_op = &autofs_sops;
+	s->s_time_gran = 1;
+
+	root_inode = iget(s, AUTOFS_ROOT_INO);
+	root = d_alloc_root(root_inode);
+	pipe = NULL;
+
+	if (!root)
+		goto fail_iput;
+
+	/* Can this call block?  - WTF cares? s is locked. */
+	if ( parse_options(data,&pipefd,&root_inode->i_uid,&root_inode->i_gid,&sbi->oz_pgrp,&minproto,&maxproto) ) {
+		printk("autofs: called with bogus options\n");
+		goto fail_dput;
+	}
+
+	/* Couldn't this be tested earlier? */
+	if ( minproto > AUTOFS_PROTO_VERSION || 
+	     maxproto < AUTOFS_PROTO_VERSION ) {
+		printk("autofs: kernel does not match daemon version\n");
+		goto fail_dput;
+	}
+
+	DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, sbi->oz_pgrp));
+	pipe = fget(pipefd);
+	
+	if ( !pipe ) {
+		printk("autofs: could not open pipe file descriptor\n");
+		goto fail_dput;
+	}
+	if ( !pipe->f_op || !pipe->f_op->write )
+		goto fail_fput;
+	sbi->pipe = pipe;
+
+	/*
+	 * Success! Install the root dentry now to indicate completion.
+	 */
+	s->s_root = root;
+	return 0;
+
+fail_fput:
+	printk("autofs: pipe file descriptor does not contain proper ops\n");
+	fput(pipe);
+fail_dput:
+	dput(root);
+	goto fail_free;
+fail_iput:
+	printk("autofs: get root dentry failed\n");
+	iput(root_inode);
+fail_free:
+	kfree(sbi);
+fail_unlock:
+	return -EINVAL;
+}
+
+static void autofs_read_inode(struct inode *inode)
+{
+	ino_t ino = inode->i_ino;
+	unsigned int n;
+	struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
+
+	/* Initialize to the default case (stub directory) */
+
+	inode->i_op = &simple_dir_inode_operations;
+	inode->i_fop = &simple_dir_operations;
+	inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
+	inode->i_nlink = 2;
+	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+	inode->i_blocks = 0;
+	inode->i_blksize = 1024;
+
+	if ( ino == AUTOFS_ROOT_INO ) {
+		inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
+		inode->i_op = &autofs_root_inode_operations;
+		inode->i_fop = &autofs_root_operations;
+		inode->i_uid = inode->i_gid = 0; /* Changed in read_super */
+		return;
+	} 
+	
+	inode->i_uid = inode->i_sb->s_root->d_inode->i_uid;
+	inode->i_gid = inode->i_sb->s_root->d_inode->i_gid;
+	
+	if ( ino >= AUTOFS_FIRST_SYMLINK && ino < AUTOFS_FIRST_DIR_INO ) {
+		/* Symlink inode - should be in symlink list */
+		struct autofs_symlink *sl;
+
+		n = ino - AUTOFS_FIRST_SYMLINK;
+		if ( n >= AUTOFS_MAX_SYMLINKS || !test_bit(n,sbi->symlink_bitmap)) {
+			printk("autofs: Looking for bad symlink inode %u\n", (unsigned int) ino);
+			return;
+		}
+		
+		inode->i_op = &autofs_symlink_inode_operations;
+		sl = &sbi->symlink[n];
+		inode->u.generic_ip = sl;
+		inode->i_mode = S_IFLNK | S_IRWXUGO;
+		inode->i_mtime.tv_sec = inode->i_ctime.tv_sec = sl->mtime;
+		inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0;
+		inode->i_size = sl->len;
+		inode->i_nlink = 1;
+	}
+}