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init: add an init_rmdir helper 

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2020-07-22 11:11:45 +02:00
parent 8fb9f73e5a
commit 20cce026c3
4 changed files with 7 additions and 8 deletions
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5
fs/init.c
View File

@ -42,3 +42,8 @@ int __init init_unlink(const char *pathname)
{
return do_unlinkat(AT_FDCWD, getname_kernel(pathname));
}
int __init init_rmdir(const char *pathname)
{
return do_rmdir(AT_FDCWD, getname_kernel(pathname));
}

1
include/linux/init_syscalls.h
View File

@ -4,3 +4,4 @@ int __init init_mount(const char *dev_name, const char *dir_name,
const char *type_page, unsigned long flags, void *data_page);
int __init init_umount(const char *name, int flags);
int __init init_unlink(const char *pathname);
int __init init_rmdir(const char *pathname);

7
include/linux/syscalls.h
View File

@ -1273,13 +1273,6 @@ int compat_ksys_ipc(u32 call, int first, int second,
* The following kernel syscall equivalents are just wrappers to fs-internal
* functions. Therefore, provide stubs to be inlined at the callsites.
*/
long do_rmdir(int dfd, struct filename *name);
static inline long ksys_rmdir(const char __user *pathname)
{
return do_rmdir(AT_FDCWD, getname(pathname));
}
extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);
static inline long ksys_mkdir(const char __user *pathname, umode_t mode)

2
init/initramfs.c
View File

@ -300,7 +300,7 @@ static void __init clean_path(char *path, umode_t fmode)
if (!vfs_lstat(path, &st) && (st.mode ^ fmode) & S_IFMT) {
if (S_ISDIR(st.mode))
ksys_rmdir(path);
init_rmdir(path);
else
init_unlink(path);
}