diff options
author | Christoph Hellwig | 2020-07-21 11:12:08 +0200 |
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committer | Christoph Hellwig | 2020-07-31 08:17:51 +0200 |
commit | c60166f04283ffba7b88b45d824bbfb2bfccee24 (patch) | |
tree | 511e51f8ae0e91e50742bf73ccbe302e8b14a313 /fs/init.c | |
parent | 09cbcec07b578c04ab4ab0e31940c20126f79c4b (diff) |
init: add an init_mount helper
Like do_mount, but takes a kernel pointer for the destination path.
Switch over the mounts in the init code and devtmpfs to it, which
just happen to work due to the implicit set_fs(KERNEL_DS) during early
init right now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/init.c')
-rw-r--r-- | fs/init.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/init.c b/fs/init.c new file mode 100644 index 000000000000..c6eb724e1c7b --- /dev/null +++ b/fs/init.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Routines that mimic syscalls, but don't use the user address space or file + * descriptors. Only for init/ and related early init code. + */ +#include <linux/init.h> +#include <linux/mount.h> +#include <linux/namei.h> +#include <linux/fs.h> +#include <linux/init_syscalls.h> +#include "internal.h" + +int __init init_mount(const char *dev_name, const char *dir_name, + const char *type_page, unsigned long flags, void *data_page) +{ + struct path path; + int ret; + + ret = kern_path(dir_name, LOOKUP_FOLLOW, &path); + if (ret) + return ret; + ret = path_mount(dev_name, &path, type_page, flags, data_page); + path_put(&path); + return ret; +} |