init: add an init_chroot helper

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

Christoph Hellwig committed 6 years ago

Commit 4b7ca501 parent db63f1e7 files · +30 −12Browse files

Showing the changes to include/linux (2 of 7 files). Show all

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@@ -4,5 +4,6 @@ int __init init_mount(const char dev_name, const char dir_name, · 3 unmodified lines
4	4	const char type_page, unsigned long flags, void data_page);
5	5	int __init init_umount(const char *name, int flags);
6	6	int __init init_chdir(const char *filename);
	7	+int __init init_chroot(const char *filename);
7	8	int __init init_unlink(const char *pathname);
8	9	int __init init_rmdir(const char *pathname);

@@ -1235,8 +1235,6 @@ asmlinkage long sys_ni_syscall(void); · 1234 unmodified lines
1235	1235	* Instead, use one of the functions which work equivalently, such as
1236	1236	* the ksys_xyzyyz() functions prototyped below.
1237	1237	*/
1238		−
1239		−int ksys_chroot(const char __user *filename);
1240	1238	ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
1241	1239	int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
1242	1240	ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);

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