[PATCH] ncpfs: ensure we free wdog_pid on parse_option or fill_inode failure

[linux-2.6-omap-h63xx.git] / fs / ncpfs / inode.c

diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 47462ac94474984a2f05b7aa1517e06c6d68b266..67a90bf795d57ef439b5fc1b3f46e09cfc6b78f1 100644 (file)
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -327,11 +327,12 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
        char *optarg;
        unsigned long optint;
        int version = 0;
+       int ret;
 
        data->flags = 0;
        data->int_flags = 0;
        data->mounted_uid = 0;
-       data->wdog_pid = -1;
+       data->wdog_pid = NULL;
        data->ncp_fd = ~0;
        data->time_out = 10;
        data->retry_count = 20;
@@ -343,8 +344,9 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
        data->mounted_vol[0] = 0;
        
        while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
-               if (optval < 0)
-                       return optval;
+               ret = optval;
+               if (ret < 0)
+                       goto err;
                switch (optval) {
                        case 'u':
                                data->uid = optint;
@@ -371,7 +373,7 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
                                data->flags = optint;
                                break;
                        case 'w':
-                               data->wdog_pid = optint;
+                               data->wdog_pid = find_get_pid(optint);
                                break;
                        case 'n':
                                data->ncp_fd = optint;
@@ -380,18 +382,21 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
                                data->info_fd = optint;
                                break;
                        case 'v':
-                               if (optint < NCP_MOUNT_VERSION_V4) {
-                                       return -ECHRNG;
-                               }
-                               if (optint > NCP_MOUNT_VERSION_V5) {
-                                       return -ECHRNG;
-                               }
+                               ret = -ECHRNG;
+                               if (optint < NCP_MOUNT_VERSION_V4)
+                                       goto err;
+                               if (optint > NCP_MOUNT_VERSION_V5)
+                                       goto err;
                                version = optint;
                                break;
                        
                }
        }
        return 0;
+err:
+       put_pid(data->wdog_pid);
+       data->wdog_pid = NULL;
+       return ret;
 }
 
 static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
@@ -409,6 +414,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 #endif
        struct ncp_entry_info finfo;
 
+       data.wdog_pid = NULL;
        server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
        if (!server)
                return -ENOMEM;
@@ -425,7 +431,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
                                data.flags = md->flags;
                                data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
                                data.mounted_uid = md->mounted_uid;
-                               data.wdog_pid = md->wdog_pid;
+                               data.wdog_pid = find_get_pid(md->wdog_pid);
                                data.ncp_fd = md->ncp_fd;
                                data.time_out = md->time_out;
                                data.retry_count = md->retry_count;
@@ -445,7 +451,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
                                data.flags = md->flags;
                                data.int_flags = 0;
                                data.mounted_uid = md->mounted_uid;
-                               data.wdog_pid = md->wdog_pid;
+                               data.wdog_pid = find_get_pid(md->wdog_pid);
                                data.ncp_fd = md->ncp_fd;
                                data.time_out = md->time_out;
                                data.retry_count = md->retry_count;
@@ -679,6 +685,7 @@ out_fput:
         */
        fput(ncp_filp);
 out:
+       put_pid(data.wdog_pid);
        sb->s_fs_info = NULL;
        kfree(server);
        return error;
@@ -711,7 +718,8 @@ static void ncp_put_super(struct super_block *sb)
        if (server->info_filp)
                fput(server->info_filp);
        fput(server->ncp_filp);
-       kill_proc(server->m.wdog_pid, SIGTERM, 1);
+       kill_pid(server->m.wdog_pid, SIGTERM, 1);
+       put_pid(server->m.wdog_pid);
 
        kfree(server->priv.data);
        kfree(server->auth.object_name);