X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2Fautofs%2Finode.c;h=54c518c89e4cf86a8fec90124f21d7ca2e776169;hb=a47afb0f9d794d525a372c8d69902147cc88222a;hp=2c9759baad61bf0f875c4adbb4abba6e8fdebb04;hpb=8a84fc15ae5cafcc366dd85cf8e1ab2040679abc;p=powerpc.git

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index 2c9759baad..45f5992a09 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -20,30 +20,42 @@
 #include "autofs_i.h"
 #include <linux/module.h>
 
-static void autofs_put_super(struct super_block *sb)
+void autofs_kill_sb(struct super_block *sb)
 {
 	struct autofs_sb_info *sbi = autofs_sbi(sb);
 	unsigned int n;
 
-	if ( !sbi->catatonic )
+	/*
+	 * In the event of a failure in get_sb_nodev the superblock
+	 * info is not present so nothing else has been setup, so
+	 * just call kill_anon_super when we are called from
+	 * deactivate_super.
+	 */
+	if (!sbi)
+		goto out_kill_sb;
+
+	if (!sbi->catatonic)
 		autofs_catatonic_mode(sbi); /* Free wait queues, close pipe */
 
+	put_pid(sbi->oz_pgrp);
+
 	autofs_hash_nuke(sbi);
-	for ( n = 0 ; n < AUTOFS_MAX_SYMLINKS ; n++ ) {
-		if ( test_bit(n, sbi->symlink_bitmap) )
+	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);
 
+out_kill_sb:
 	DPRINTK(("autofs: shutting down\n"));
+	kill_anon_super(sb);
 }
 
 static void autofs_read_inode(struct inode *inode);
 
-static struct super_operations autofs_sops = {
+static const struct super_operations autofs_sops = {
 	.read_inode	= autofs_read_inode,
-	.put_super	= autofs_put_super,
 	.statfs		= simple_statfs,
 };
 
@@ -59,7 +71,8 @@ static match_table_t autofs_tokens = {
 	{Opt_err, NULL}
 };
 
-static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid, pid_t *pgrp, int *minproto, int *maxproto)
+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];
@@ -67,7 +80,7 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid, pid
 
 	*uid = current->uid;
 	*gid = current->gid;
-	*pgrp = process_group(current);
+	*pgrp = task_pgrp_nr(current);
 
 	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
 
@@ -128,17 +141,18 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 	int pipefd;
 	struct autofs_sb_info *sbi;
 	int minproto, maxproto;
+	pid_t pgid;
 
 	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
-	if ( !sbi )
+	if (!sbi)
 		goto fail_unlock;
 	DPRINTK(("autofs: starting up, sbi = %p\n",sbi));
 
 	s->s_fs_info = sbi;
 	sbi->magic = AUTOFS_SBI_MAGIC;
-	sbi->catatonic = 0;
+	sbi->pipe = NULL;
+	sbi->catatonic = 1;
 	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);
@@ -158,28 +172,39 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 		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) ) {
+	if (parse_options(data, &pipefd, &root_inode->i_uid,
+				&root_inode->i_gid, &pgid, &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 ) {
+	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));
+	DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, pgid));
+	sbi->oz_pgrp = find_get_pid(pgid);
+
+	if (!sbi->oz_pgrp) {
+		printk("autofs: could not find process group %d\n", pgid);
+		goto fail_dput;
+	}
+
 	pipe = fget(pipefd);
 	
-	if ( !pipe ) {
+	if (!pipe) {
 		printk("autofs: could not open pipe file descriptor\n");
-		goto fail_dput;
+		goto fail_put_pid;
 	}
-	if ( !pipe->f_op || !pipe->f_op->write )
+
+	if (!pipe->f_op || !pipe->f_op->write)
 		goto fail_fput;
 	sbi->pipe = pipe;
+	sbi->catatonic = 0;
 
 	/*
 	 * Success! Install the root dentry now to indicate completion.
@@ -190,6 +215,8 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 fail_fput:
 	printk("autofs: pipe file descriptor does not contain proper ops\n");
 	fput(pipe);
+fail_put_pid:
+	put_pid(sbi->oz_pgrp);
 fail_dput:
 	dput(root);
 	goto fail_free;
@@ -198,6 +225,7 @@ fail_iput:
 	iput(root_inode);
 fail_free:
 	kfree(sbi);
+	s->s_fs_info = NULL;
 fail_unlock:
 	return -EINVAL;
 }
@@ -217,7 +245,7 @@ static void autofs_read_inode(struct inode *inode)
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
 	inode->i_blocks = 0;
 
-	if ( ino == AUTOFS_ROOT_INO ) {
+	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;
@@ -228,12 +256,12 @@ static void autofs_read_inode(struct inode *inode)
 	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 ) {
+	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)) {
+		if (n >= AUTOFS_MAX_SYMLINKS || !test_bit(n,sbi->symlink_bitmap)) {
 			printk("autofs: Looking for bad symlink inode %u\n", (unsigned int) ino);
 			return;
 		}