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-rw-r--r--fs/namespace.c26
1 files changed, 8 insertions, 18 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 00e5b1efa59..abd3abb5261 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2514,21 +2514,9 @@ int copy_mount_options(const void __user * data, unsigned long *where)
return 0;
}
-int copy_mount_string(const void __user *data, char **where)
+char *copy_mount_string(const void __user *data)
{
- char *tmp;
-
- if (!data) {
- *where = NULL;
- return 0;
- }
-
- tmp = strndup_user(data, PAGE_SIZE);
- if (IS_ERR(tmp))
- return PTR_ERR(tmp);
-
- *where = tmp;
- return 0;
+ return data ? strndup_user(data, PAGE_SIZE) : NULL;
}
/*
@@ -2794,8 +2782,9 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
char *kernel_dev;
unsigned long data_page;
- ret = copy_mount_string(type, &kernel_type);
- if (ret < 0)
+ kernel_type = copy_mount_string(type);
+ ret = PTR_ERR(kernel_type);
+ if (IS_ERR(kernel_type))
goto out_type;
kernel_dir = getname(dir_name);
@@ -2804,8 +2793,9 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
goto out_dir;
}
- ret = copy_mount_string(dev_name, &kernel_dev);
- if (ret < 0)
+ kernel_dev = copy_mount_string(dev_name);
+ ret = PTR_ERR(kernel_dev);
+ if (IS_ERR(kernel_dev))
goto out_dev;
ret = copy_mount_options(data, &data_page);