X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fautofs%2Finode.c;h=dda510d31f840dbba96834619a668f723bc99e16;hb=ca6d1b1333bc2e61e37982de1f28d8604c232414;hp=d8315e61731e55beac25b151aa929f0ceb6b9b26;hpb=d78e53c89a820471837e0cb91fe36b7be1a7c9de;p=linux-2.6

diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index d8315e6173..dda510d31f 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -37,6 +37,8 @@ void autofs_kill_sb(struct super_block *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))
@@ -50,11 +52,9 @@ out_kill_sb:
 	kill_anon_super(sb);
 }
 
-static void autofs_read_inode(struct inode *inode);
-
 static const struct super_operations autofs_sops = {
-	.read_inode	= autofs_read_inode,
 	.statfs		= simple_statfs,
+	.show_options	= generic_show_options,
 };
 
 enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
@@ -78,7 +78,7 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
 
 	*uid = current->uid;
 	*gid = current->gid;
-	*pgrp = process_group(current);
+	*pgrp = task_pgrp_nr(current);
 
 	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
 
@@ -139,6 +139,9 @@ 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;
+
+	save_mount_options(s, data);
 
 	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
 	if (!sbi)
@@ -150,7 +153,6 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 	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);
@@ -162,7 +164,9 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 	s->s_time_gran = 1;
 	sbi->sb = s;
 
-	root_inode = iget(s, AUTOFS_ROOT_INO);
+	root_inode = autofs_iget(s, AUTOFS_ROOT_INO);
+	if (IS_ERR(root_inode))
+		goto fail_free;
 	root = d_alloc_root(root_inode);
 	pipe = NULL;
 
@@ -171,7 +175,7 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 
 	/* 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,
+				&root_inode->i_gid, &pgid, &minproto,
 				&maxproto)) {
 		printk("autofs: called with bogus options\n");
 		goto fail_dput;
@@ -184,13 +188,21 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
 		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) {
 		printk("autofs: could not open pipe file descriptor\n");
-		goto fail_dput;
+		goto fail_put_pid;
 	}
+
 	if (!pipe->f_op || !pipe->f_op->write)
 		goto fail_fput;
 	sbi->pipe = pipe;
@@ -205,6 +217,8 @@ 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;
@@ -218,11 +232,17 @@ fail_unlock:
 	return -EINVAL;
 }
 
-static void autofs_read_inode(struct inode *inode)
+struct inode *autofs_iget(struct super_block *sb, unsigned long ino)
 {
-	ino_t ino = inode->i_ino;
 	unsigned int n;
-	struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
+	struct autofs_sb_info *sbi = autofs_sbi(sb);
+	struct inode *inode;
+
+	inode = iget_locked(sb, ino);
+	if (!inode)
+		return ERR_PTR(-ENOMEM);
+	if (!(inode->i_state & I_NEW))
+		return inode;
 
 	/* Initialize to the default case (stub directory) */
 
@@ -238,7 +258,7 @@ static void autofs_read_inode(struct inode *inode)
 		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;
+		goto done;
 	} 
 	
 	inode->i_uid = inode->i_sb->s_root->d_inode->i_uid;
@@ -251,7 +271,7 @@ static void autofs_read_inode(struct inode *inode)
 		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;
+			goto done;
 		}
 		
 		inode->i_op = &autofs_symlink_inode_operations;
@@ -263,4 +283,8 @@ static void autofs_read_inode(struct inode *inode)
 		inode->i_size = sl->len;
 		inode->i_nlink = 1;
 	}
+
+done:
+	unlock_new_inode(inode);
+	return inode;
 }