#include "opt_rootdevname.h"
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/eventhandler.h>
#include <sys/fcntl.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mdioctl.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/reboot.h>
#include <sys/sbuf.h>
#include <sys/stat.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <geom/geom.h>

Include dependency graph for vfs_mountroot.c:

Macros
#define	CC_WHITESPACE -1

#define	CC_NONWHITESPACE -2

#define	PE_EOF -1

#define	PE_EOL -2

#define	ERRMSGL 255

Enumerations
enum	rh_flags { RH_FREE , RH_ALLOC , RH_ARG }

Functions
	__FBSDID ("$FreeBSD$")

static int	parse_mount (char **)

static struct mntarg *	parse_mountroot_options (struct mntarg , const char )

static int	sysctl_vfs_root_mount_hold (SYSCTL_HANDLER_ARGS)

static void	vfs_mountroot_wait (void)

static int	vfs_mountroot_wait_if_neccessary (const char fs, const char dev)

	MTX_SYSINIT (root_holds, &root_holds_mtx, "root_holds", MTX_DEF)

static	TAILQ_HEAD (root_hold_token)

	TUNABLE_INT ("vfs.mountroot.timeout", &root_mount_timeout)

	SYSCTL_INT (_vfs, OID_AUTO, root_mount_always_wait, CTLFLAG_RDTUN, &root_mount_always_wait, 0, "Wait for root mount holds even if the root device already exists")

	SYSCTL_PROC (_vfs, OID_AUTO, root_mount_hold, CTLTYPE_STRING\|CTLFLAG_RD\|CTLFLAG_MPSAFE, NULL, 0, sysctl_vfs_root_mount_hold, "A", "List of root mount hold tokens")

struct root_hold_token *	root_mount_hold (const char *identifier)

void	root_mount_hold_token (const char identifier, struct root_hold_token h)

void	root_mount_rel (struct root_hold_token *h)

int	root_mounted (void)

static void	set_rootvnode (void)

static int	vfs_mountroot_devfs (struct thread td, struct mount *mpp)

static void	vfs_mountroot_shuffle (struct thread td, struct mount mpdevfs)

static __inline int	parse_peek (char **conf)

static __inline void	parse_poke (char **conf, int c)

static __inline void	parse_advance (char **conf)

static int	parse_skipto (char **conf, int mc)

static int	parse_token (char conf, char tok)

static void	parse_dir_ask_printenv (const char *var)

static int	parse_dir_ask (char **conf)

static int	parse_dir_md (char **conf)

static int	parse_dir_onfail (char **conf)

static int	parse_dir_timeout (char **conf)

static int	parse_directive (char **conf)

static int	parse_mount_dev_present (const char *dev)

static int	vfs_mountroot_parse (struct sbuf sb, struct mount mpdevfs)

static void	vfs_mountroot_conf0 (struct sbuf *sb)

static int	vfs_mountroot_readconf (struct thread td, struct sbuf sb)

void	vfs_mountroot (void)

Variables
struct vnode *	rootvnode

struct mount *	rootdevmp

char *	rootdevnames [2] = {NULL, NULL}

struct mtx	root_holds_mtx

static enum action	root_mount_onfail = A_CONTINUE

static int	root_mount_mddev

static int	root_mount_complete

static int	root_mount_timeout = 3

static int	root_mount_always_wait = 0

Macro Definition Documentation

◆ CC_NONWHITESPACE

#define CC_NONWHITESPACE -2

Definition at line 436 of file vfs_mountroot.c.

◆ CC_WHITESPACE

#define CC_WHITESPACE -1

Definition at line 435 of file vfs_mountroot.c.

◆ ERRMSGL

#define ERRMSGL 255

Definition at line 736 of file vfs_mountroot.c.

◆ PE_EOF

#define PE_EOF -1

Definition at line 439 of file vfs_mountroot.c.

◆ PE_EOL

#define PE_EOL -2

Definition at line 440 of file vfs_mountroot.c.

Enumeration Type Documentation

◆ rh_flags

enum rh_flags

Enumerator
RH_FREE
RH_ALLOC
RH_ARG

Definition at line 124 of file vfs_mountroot.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ MTX_SYSINIT()

MTX_SYSINIT	(	root_holds	,
		&	root_holds_mtx,
		"root_holds"	,
		MTX_DEF
	)

◆ parse_advance()

static __inline void parse_advance ( char ** conf )

static

Definition at line 457 of file vfs_mountroot.c.

Referenced by parse_mount(), parse_skipto(), and vfs_mountroot_parse().

Here is the caller graph for this function:

◆ parse_dir_ask()

static int parse_dir_ask ( char ** conf )

static

Definition at line 524 of file vfs_mountroot.c.

References cngets(), hz, name, parse_dir_ask_printenv(), parse_mount(), printf(), and vfs_mountroot_wait().

Referenced by parse_directive().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_dir_ask_printenv()

static void parse_dir_ask_printenv ( const char * var )

static

Definition at line 512 of file vfs_mountroot.c.

References freeenv(), kern_getenv(), and printf().

Referenced by parse_dir_ask().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_dir_md()

static int parse_dir_md ( char ** conf )

static

Definition at line 576 of file vfs_mountroot.c.

References fd, free(), kern_close(), kern_ioctl(), kern_openat(), kern_statat(), malloc(), parse_token(), path, printf(), and root_mount_mddev.

Referenced by parse_directive().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_dir_onfail()

static int parse_dir_onfail ( char ** conf )

static

Definition at line 649 of file vfs_mountroot.c.

References free(), parse_token(), printf(), and root_mount_onfail.

Referenced by parse_directive().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_dir_timeout()

static int parse_dir_timeout ( char ** conf )

static

Definition at line 676 of file vfs_mountroot.c.

References free(), parse_token(), and root_mount_timeout.

Referenced by parse_directive().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_directive()

static int parse_directive ( char ** conf )

static

Definition at line 695 of file vfs_mountroot.c.

References free(), parse_dir_ask(), parse_dir_md(), parse_dir_onfail(), parse_dir_timeout(), parse_skipto(), parse_token(), and printf().

Referenced by vfs_mountroot_parse().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_mount()

static int parse_mount ( char ** conf )

static

Definition at line 738 of file vfs_mountroot.c.

References bootverbose, ERRMSGL, mntarg::error, free(), hz, kernel_mount(), malloc(), mount_arg(), parse_advance(), parse_mountroot_options(), parse_poke(), parse_skipto(), parse_token(), printf(), root_mount_mddev, root_mount_timeout, vfs_byname(), and vfs_mountroot_wait_if_neccessary().

Referenced by parse_dir_ask(), and vfs_mountroot_parse().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_mount_dev_present()

static int parse_mount_dev_present ( const char * dev )

static

Definition at line 723 of file vfs_mountroot.c.

References namei(), NDFREE(), and vput().

Referenced by vfs_mountroot_wait_if_neccessary().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_mountroot_options()

static struct mntarg * parse_mountroot_options	(	struct mntarg *	ma,
		const char *	options
	)

static

Definition at line 1125 of file vfs_mountroot.c.

References free(), mount_arg(), and name.

Referenced by parse_mount().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_peek()

static __inline int parse_peek ( char ** conf )

static

Definition at line 443 of file vfs_mountroot.c.

Referenced by parse_skipto(), and vfs_mountroot_parse().

Here is the caller graph for this function:

◆ parse_poke()

static __inline void parse_poke	(	char **	conf,
		int	c
	)

static

Definition at line 450 of file vfs_mountroot.c.

Referenced by parse_mount().

Here is the caller graph for this function:

◆ parse_skipto()

static int parse_skipto	(	char **	conf,
		int	mc
	)

static

Definition at line 464 of file vfs_mountroot.c.

References CC_NONWHITESPACE, CC_WHITESPACE, parse_advance(), parse_peek(), PE_EOF, and PE_EOL.

Referenced by parse_directive(), parse_mount(), parse_token(), and vfs_mountroot_parse().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ parse_token()

static int parse_token	(	char **	conf,
		char **	tok
	)

static

Definition at line 493 of file vfs_mountroot.c.

References CC_NONWHITESPACE, CC_WHITESPACE, malloc(), and parse_skipto().

Referenced by parse_dir_md(), parse_dir_onfail(), parse_dir_timeout(), parse_directive(), parse_mount(), and vfs_mountroot_conf0().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ root_mount_hold()

struct root_hold_token * root_mount_hold ( const char * identifier )

Definition at line 174 of file vfs_mountroot.c.

References malloc(), RH_ALLOC, and root_holds_mtx.

Here is the call graph for this function:

◆ root_mount_hold_token()

void root_mount_hold_token	(	const char *	identifier,
		struct root_hold_token *	h
	)

Definition at line 189 of file vfs_mountroot.c.

References panic(), RH_ARG, and root_holds_mtx.

Here is the call graph for this function:

◆ root_mount_rel()

void root_mount_rel ( struct root_hold_token * h )

Definition at line 212 of file vfs_mountroot.c.

References free(), RH_ALLOC, RH_FREE, root_holds_mtx, and wakeup().

Here is the call graph for this function:

◆ root_mounted()

int root_mounted ( void )

Definition at line 230 of file vfs_mountroot.c.

References root_mount_complete.

◆ set_rootvnode()

static void set_rootvnode ( void )

static

Definition at line 238 of file vfs_mountroot.c.

References mountlist, panic(), pwd_set_rootvnode(), and rootvnode.

Referenced by vfs_mountroot_devfs(), and vfs_mountroot_shuffle().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ SYSCTL_INT()

SYSCTL_INT	(	_vfs	,
		OID_AUTO	,
		root_mount_always_wait	,
		CTLFLAG_RDTUN	,
		&	root_mount_always_wait,
		0	,
		"Wait for root mount holds even if the root device already exists"
	)

◆ SYSCTL_PROC()

SYSCTL_PROC	(	_vfs	,
		OID_AUTO	,
		root_mount_hold	,
		CTLTYPE_STRING\|CTLFLAG_RD\|	CTLFLAG_MPSAFE,
		NULL	,
		0	,
		sysctl_vfs_root_mount_hold	,
		"A"	,
		"List of root mount hold tokens"
	)