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init: add an init_link helper

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Add a simple helper to link with a kernel space file name and switch
the early init code over to it.  Remove the now unused ksys_link.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2020-07-22 11:14:19 +02:00
parent eb9d7d390e
commit 812931d693
6 changed files with 38 additions and 14 deletions
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1
include/linux/init_syscalls.h
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@ -8,5 +8,6 @@ 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_link(const char *oldname, const char *newname);
int __init init_unlink(const char *pathname);
int __init init_rmdir(const char *pathname);

9
include/linux/syscalls.h
View file

@ -1295,15 +1295,6 @@ static inline long ksys_mknod(const char __user *filename, umode_t mode,
return do_mknodat(AT_FDCWD, filename, mode, dev);
}
extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
const char __user *newname, int flags);
static inline long ksys_link(const char __user *oldname,
const char __user *newname)
{
return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
}
extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
gid_t group, int flag);