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init: add an init_stat helper

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2020-07-22 11:15:40 +02:00
parent 5fee64fcde
commit 716308a533
4 changed files with 20 additions and 2 deletions
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15
fs/init.c
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@@ -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;