Commit 716308a5 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

init: add an init_stat helper 



Add a simple helper to stat with a kernel space file name and switch
the early init code over to it.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 5fee64fc

drivers/md/md-autodetect.c

+2 −1
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
#include <linux/mount.h>

#include <linux/major.h>

#include <linux/delay.h>

#include <linux/init_syscalls.h>

#include <linux/raid/detect.h>

#include <linux/raid/md_u.h>

#include <linux/raid/md_p.h>
@@ -151,7 +152,7 @@ static void __init md_setup_drive(struct md_setup_args *args) 
		if (strncmp(devname, "/dev/", 5) == 0)

			devname += 5;

		snprintf(comp_name, 63, "/dev/%s", devname);

		if (vfs_stat(comp_name, &stat) == 0 && S_ISBLK(stat.mode))

		if (init_stat(comp_name, &stat, 0) == 0 && S_ISBLK(stat.mode))

			dev = new_decode_dev(stat.rdev);

		if (!dev) {

			pr_warn("md: Unknown device name: %s\n", devname);

fs/init.c

+15 −0
Original line number Diff line number Diff line
@@ -122,6 +122,21 @@ int __init init_eaccess(const char *filename) 
	return error;

}



int __init init_stat(const char *filename, struct kstat *stat, int flags)

{

	int lookup_flags = (flags & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW;

	struct path path;

	int error;



	error = kern_path(filename, lookup_flags, &path);

	if (error)

		return error;

	error = vfs_getattr(&path, stat, STATX_BASIC_STATS,

			    flags | AT_NO_AUTOMOUNT);

	path_put(&path);

	return error;

}



int __init init_mknod(const char *filename, umode_t mode, unsigned int dev)

{

	struct dentry *dentry;

include/linux/init_syscalls.h

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ int __init init_chroot(const char *filename); 
int __init init_chown(const char *filename, uid_t user, gid_t group, int flags);

int __init init_chmod(const char *filename, umode_t mode);

int __init init_eaccess(const char *filename);

int __init init_stat(const char *filename, struct kstat *stat, int flags);

int __init init_mknod(const char *filename, umode_t mode, unsigned int dev);

int __init init_link(const char *oldname, const char *newname);

int __init init_symlink(const char *oldname, const char *newname);

init/initramfs.c

+2 −1
Original line number Diff line number Diff line
@@ -298,7 +298,8 @@ static void __init clean_path(char *path, umode_t fmode) 
{

	struct kstat st;



	if (!vfs_lstat(path, &st) && (st.mode ^ fmode) & S_IFMT) {

	if (init_stat(path, &st, AT_SYMLINK_NOFOLLOW) &&

	    (st.mode ^ fmode) & S_IFMT) {

		if (S_ISDIR(st.mode))

			init_rmdir(path);

		else