[PATCH 24/24] init: add an init_lstat helper
From: Christoph Hellwig <hch@lst.de>
Date: 2020-07-21 16:29:20
Also in:
linux-fsdevel, linux-raid, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Add a simple helper to lstat with a kernel space file name and switch the early init code over to it. Remove the now unused ksys_lstat. Signed-off-by: Christoph Hellwig <hch@lst.de> --- init/do_mounts.h | 1 + init/fs.c | 14 ++++++++++++++ init/initramfs.c | 2 +- 3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/init/do_mounts.h b/init/do_mounts.h
index a793bafc6c6f2b..20766cfe549b48 100644
--- a/init/do_mounts.h
+++ b/init/do_mounts.h@@ -16,6 +16,7 @@ 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_lstat(const char *filename, struct kstat *stat); 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);
diff --git a/init/fs.c b/init/fs.c
index 7f0e50a877fc98..b387ff67f365db 100644
--- a/init/fs.c
+++ b/init/fs.c@@ -103,6 +103,20 @@ int __init init_eaccess(const char *filename) return error; } +int __init init_lstat(const char *filename, struct kstat *stat) +{ + struct path path; + int error; + + error = kern_path(filename, 0, &path); + if (error) + return error; + error = vfs_getattr(&path, stat, STATX_BASIC_STATS, + AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT); + path_put(&path); + return error; +} + int __init init_mknod(const char *filename, umode_t mode, unsigned int dev) { struct dentry *dentry;
diff --git a/init/initramfs.c b/init/initramfs.c
index bd685fdb5840f3..8c9f92f1660b96 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c@@ -304,7 +304,7 @@ 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_lstat(path, &st) && (st.mode ^ fmode) & S_IFMT) { if (S_ISDIR(st.mode)) init_rmdir(path); else
--
2.27.0