1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
5  * Copyright (c) 1999-2004 Poul-Henning Kamp
43 #include <sys/conf.h>
158 		sbuf_printf(&sb, "%s", h->who);  in sysctl_vfs_root_mount_hold()
175 	h->flags = RH_ALLOC;  in root_mount_hold()
176 	h->who = identifier;  in root_mount_hold()
191 	h->flags = RH_ARG;  in root_mount_hold_token()
192 	h->who = identifier;  in root_mount_hold_token()
211 	if (h == NULL || h->flags == RH_FREE)  in root_mount_rel()
219 	if (h->flags == RH_ALLOC) {  in root_mount_rel()
222 		h->flags = RH_FREE;  in root_mount_rel()
269 		mp = vfs_mount_alloc(NULLVP, vfsp, "/dev", td->td_ucred);  in vfs_mountroot_devfs()
276 		error = VFS_STATFS(mp, &mp->mnt_stat);  in vfs_mountroot_devfs()
283 		mp->mnt_opt = opts;  in vfs_mountroot_devfs()
298 		printf("kern_symlink /dev -> / returns %d\n", error);  in vfs_mountroot_devfs()
333 	vporoot->v_iflag &= ~VI_MOUNT;  in vfs_mountroot_shuffle()
335 	vporoot->v_mountedhere = NULL;  in vfs_mountroot_shuffle()
337 	mporoot->mnt_flag &= ~MNT_ROOTFS;  in vfs_mountroot_shuffle()
338 	mporoot->mnt_vnodecovered = NULL;  in vfs_mountroot_shuffle()
342 	mpnroot->mnt_vnodecovered = NULL;  in vfs_mountroot_shuffle()
344 	cache_purgevfs(rootvnode->v_mount);  in vfs_mountroot_shuffle()
360 			error = (vp->v_type == VDIR) ? 0 : ENOTDIR;  in vfs_mountroot_shuffle()
366 				mporoot->mnt_vnodecovered = vp;  in vfs_mountroot_shuffle()
368 				vp->v_mountedhere = mporoot;  in vfs_mountroot_shuffle()
369 				strlcpy(mporoot->mnt_stat.f_mntonname,  in vfs_mountroot_shuffle()
388 		error = (vp->v_type == VDIR) ? 0 : ENOTDIR;  in vfs_mountroot_shuffle()
392 			vpdevfs = mpdevfs->mnt_vnodecovered;  in vfs_mountroot_shuffle()
397 				vpdevfs->v_mountedhere = NULL;  in vfs_mountroot_shuffle()
402 			mpdevfs->mnt_vnodecovered = vp;  in vfs_mountroot_shuffle()
404 			vp->v_mountedhere = mpdevfs;  in vfs_mountroot_shuffle()
416 		/* Unlink the no longer needed /dev/dev -> / symlink */  in vfs_mountroot_shuffle()
430 #define	CC_WHITESPACE		-1
431 #define	CC_NONWHITESPACE	-2
434 #define	PE_EOF			-1
435 #define	PE_EOL			-2
438 parse_peek(char **conf)  in parse_peek()  argument
441 	return (**conf);  in parse_peek()
445 parse_poke(char **conf, int c)  in parse_poke()  argument
448 	**conf = c;  in parse_poke()
452 parse_advance(char **conf)  in parse_advance()  argument
455 	(*conf)++;  in parse_advance()
459 parse_skipto(char **conf, int mc)  in parse_skipto()  argument
464 		c = parse_peek(conf);  in parse_skipto()
482 		parse_advance(conf);  in parse_skipto()
488 parse_token(char **conf, char **tok)  in parse_token()  argument
495 	error = parse_skipto(conf, CC_NONWHITESPACE);  in parse_token()
498 	p = *conf;  in parse_token()
499 	error = parse_skipto(conf, CC_WHITESPACE);  in parse_token()
500 	len = *conf - p;  in parse_token()
519 parse_dir_ask(char **conf)  in parse_dir_ask()  argument
540 	printf("mount -t cd9660 -o ro /dev/cd0 /)\n");  in parse_dir_ask()
563 		if (error == -1)  in parse_dir_ask()
571 parse_dir_md(char **conf)  in parse_dir_md()  argument
575 	struct md_ioctl *mdio;  in parse_dir_md()  local
580 	fd = -1;  in parse_dir_md()
582 	error = parse_token(conf, &tok);  in parse_dir_md()
587 	mdio = malloc(sizeof(*mdio) + len + 1, M_TEMP, M_WAITOK | M_ZERO);  in parse_dir_md()
588 	path = (void *)(mdio + 1);  in parse_dir_md()
603 	fd = td->td_retval[0];  in parse_dir_md()
604 	mdio->md_version = MDIOVERSION;  in parse_dir_md()
605 	mdio->md_type = MD_VNODE;  in parse_dir_md()
607 	if (root_mount_mddev != -1) {  in parse_dir_md()
608 		mdio->md_unit = root_mount_mddev;  in parse_dir_md()
609 		(void)kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);  in parse_dir_md()
611 		root_mount_mddev = -1;  in parse_dir_md()
614 	mdio->md_file = (void *)(mdio + 1);  in parse_dir_md()
615 	mdio->md_options = MD_AUTOUNIT | MD_READONLY;  in parse_dir_md()
616 	mdio->md_mediasize = sb.st_size;  in parse_dir_md()
617 	mdio->md_unit = 0;  in parse_dir_md()
618 	error = kern_ioctl(td, fd, MDIOCATTACH, (void *)mdio);  in parse_dir_md()
622 	if (mdio->md_unit > 9) {  in parse_dir_md()
624 		mdio->md_file = NULL;  in parse_dir_md()
625 		mdio->md_options = 0;  in parse_dir_md()
626 		mdio->md_mediasize = 0;  in parse_dir_md()
627 		error = kern_ioctl(td, fd, MDIOCDETACH, (void *)mdio);  in parse_dir_md()
633 	root_mount_mddev = mdio->md_unit;  in parse_dir_md()
634 	printf(MD_NAME "%u attached to %s\n", root_mount_mddev, mdio->md_file);  in parse_dir_md()
639 	free(mdio, M_TEMP);  in parse_dir_md()
644 parse_dir_onfail(char **conf)  in parse_dir_onfail()  argument
649 	error = parse_token(conf, &action);  in parse_dir_onfail()
671 parse_dir_timeout(char **conf)  in parse_dir_timeout()  argument
677 	error = parse_token(conf, &tok);  in parse_dir_timeout()
690 parse_directive(char **conf)  in parse_directive()  argument
695 	error = parse_token(conf, &dir);  in parse_directive()
700 		error = parse_dir_ask(conf);  in parse_directive()
702 		error = parse_dir_md(conf);  in parse_directive()
704 		error = parse_dir_onfail(conf);  in parse_directive()
706 		error = parse_dir_timeout(conf);  in parse_directive()
710 		(void)parse_skipto(conf, '\n');  in parse_directive()
734 parse_mount(char **conf)  in parse_mount()  argument
741 	error = parse_token(conf, &tok);  in parse_mount()
754 	if (root_mount_mddev != -1) {  in parse_mount()
762 	error = parse_token(conf, &tok);  in parse_mount()
785 		ma = mount_arg(ma, "fstype", fs, -1);  in parse_mount()
786 		ma = mount_arg(ma, "fspath", "/", -1);  in parse_mount()
787 		ma = mount_arg(ma, "from", dev, -1);  in parse_mount()
803 		timeout -= delay;  in parse_mount()
817 	/* kernel_mount can return -1 on error. */  in parse_mount()
826 	char *conf;  in vfs_mountroot_parse()  local
829 	root_mount_mddev = -1;  in vfs_mountroot_parse()
832 	conf = sbuf_data(sb);  in vfs_mountroot_parse()
837 		error = parse_skipto(&conf, CC_NONWHITESPACE);  in vfs_mountroot_parse()
839 			parse_advance(&conf);  in vfs_mountroot_parse()
844 		switch (parse_peek(&conf)) {  in vfs_mountroot_parse()
846 			error = parse_skipto(&conf, '\n');  in vfs_mountroot_parse()
849 			error = parse_directive(&conf);  in vfs_mountroot_parse()
852 			error = parse_mount(&conf);  in vfs_mountroot_parse()
853 			if (error == -1) {  in vfs_mountroot_parse()
863 		if (parse_peek(&conf) != '\n') {  in vfs_mountroot_parse()
865 			(void)parse_skipto(&conf, '\n');  in vfs_mountroot_parse()
879 		panic("mountroot: unable to (re-)mount root.");  in vfs_mountroot_parse()
947 	NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, "/.mount.conf");  in vfs_mountroot_readconf()
955 	len = sizeof(buf) - 1;  in vfs_mountroot_readconf()
958 		    UIO_SYSSPACE, IO_NODELOCKED, td->td_ucred,  in vfs_mountroot_readconf()
964 		buf[len - resid] = 0;  in vfs_mountroot_readconf()
966 		ofs += len - resid;  in vfs_mountroot_readconf()
970 	vn_close(nd.ni_vp, FREAD, td->td_ucred, td);  in vfs_mountroot_readconf()
998 				printf(" %s", h->who);  in vfs_mountroot_wait()
1049 		timeout -= delay;  in vfs_mountroot_wait_if_neccessary()
1100 		if (mp->mnt_time > timebase)  in vfs_mountroot()
1101 			timebase = mp->mnt_time;  in vfs_mountroot()
1162 		    (val_arg != NULL ? -1 : 0));  in parse_mountroot_options()