#include <sys/cdefs.h>
#include "opt_ddb.h"
#include "opt_printf.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/kdb.h>
#include <sys/mutex.h>
#include <sys/sx.h>
#include <sys/kernel.h>
#include <sys/msgbuf.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/stddef.h>
#include <sys/sysctl.h>
#include <sys/tty.h>
#include <sys/syslog.h>
#include <sys/cons.h>
#include <sys/uio.h>
#include <sys/ctype.h>
#include <machine/stdarg.h>

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Data Structures
struct	putchar_arg

struct	snprintf_arg

Macros
#define	TOCONS 0x01

#define	TOTTY 0x02

#define	TOLOG 0x04

#define	MAXNBUF (sizeof(intmax_t) * NBBY + 1)

#define	CONSCHUNK 128

#define	PCHAR(c) {int cc=(c); if (func) (func)(cc,arg); else d++ = cc; retval++; }

Functions
	__FBSDID ("$BSDSUniX$")

static void	msglogchar (int c, int pri)

static void	msglogstr (char *str, int pri, int filter_cr)

static void	putchar (int ch, void *arg)

static char *	ksprintn (char nbuf, uintmax_t num, int base, int len, int upper)

static void	snprintf_func (int ch, void *arg)

	TUNABLE_INT ("kern.log_console_output",&log_console_output)

	SYSCTL_INT (_kern, OID_AUTO, log_console_output, CTLFLAG_RW,&log_console_output, 0,"Duplicate console output to the syslog.")

	TUNABLE_INT ("kern.log_console_add_linefeed",&log_console_add_linefeed)

	SYSCTL_INT (_kern, OID_AUTO, log_console_add_linefeed, CTLFLAG_RW,&log_console_add_linefeed, 0,"log_console() adds extra newlines.")

	TUNABLE_INT ("kern.always_console_output",&always_console_output)

	SYSCTL_INT (_kern, OID_AUTO, always_console_output, CTLFLAG_RW,&always_console_output, 0,"Always output to console despite TIOCCONS.")

void	tablefull (const char *tab)

int	uprintf (const char *fmt,...)

void	tprintf (struct proc p, int pri, const char fmt,...)

int	ttyprintf (struct tty tp, const char fmt,...)

static int	_vprintf (int level, int flags, const char *fmt, va_list ap)

void	log (int level, const char *fmt,...)

void	log_console (struct uio *uio)

int	printf (const char *fmt,...)

int	vprintf (const char *fmt, va_list ap)

static void	putbuf (int c, struct putchar_arg *ap)

int	sprintf (char buf, const char cfmt,...)

int	vsprintf (char buf, const char cfmt, va_list ap)

int	snprintf (char str, size_t size, const char format,...)

int	vsnprintf (char str, size_t size, const char format, va_list ap)

int	vsnrprintf (char str, size_t size, int radix, const char format, va_list ap)

int	kvprintf (char const fmt, void(func)(int, void ), void arg, int radix, va_list ap)

void	msgbufinit (void *ptr, int size)

	SYSCTL_INT (_security_bsd, OID_AUTO, unprivileged_read_msgbuf, CTLFLAG_RW,&unprivileged_read_msgbuf, 0,"Unprivileged processes may read the kernel message buffer")

static int	sysctl_kern_msgbuf (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern, OID_AUTO, msgbuf, CTLTYPE_STRING\|CTLFLAG_RD\|CTLFLAG_MPSAFE, NULL, 0, sysctl_kern_msgbuf,"A","Contents of kernel message buffer")

static int	sysctl_kern_msgbuf_clear (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern, OID_AUTO, msgbuf_clear, CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_SECURE\|CTLFLAG_MPSAFE,&msgbuf_clearflag, 0, sysctl_kern_msgbuf_clear,"I","Clear kernel message buffer")

void	hexdump (const void ptr, int length, const char hdr, int flags)

Variables
int	log_open

static int	msgbufmapped

int	msgbuftrigger

static int	log_console_output = 1

static int	log_console_add_linefeed = 0

static int	always_console_output = 0

static int	unprivileged_read_msgbuf = 1

static int	msgbuf_clearflag

Macro Definition Documentation

#define CONSCHUNK 128

Definition at line 300 of file subr_prf.c.

Referenced by log_console().

#define MAXNBUF (sizeof(intmax_t) * NBBY + 1)

Definition at line 77 of file subr_prf.c.

Referenced by kvprintf(), and msglogchar().

#define PCHAR ( c ) {int cc=(c); if (func) (*func)(cc,arg); else *d++ = cc; retval++; }

Referenced by kvprintf().

#define TOCONS 0x01

Definition at line 72 of file subr_prf.c.

Referenced by _vprintf(), log(), putbuf(), putchar(), and vprintf().

#define TOLOG 0x04

Definition at line 74 of file subr_prf.c.

Referenced by _vprintf(), log(), putbuf(), putchar(), tprintf(), and vprintf().

#define TOTTY 0x02

Definition at line 73 of file subr_prf.c.

Referenced by putchar(), tprintf(), ttyprintf(), and uprintf().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

static int _vprintf	(	int	level,
		int	flags,
		const char *	fmt,
		va_list	ap
	)

static

Definition at line 245 of file subr_prf.c.

References cnputs(), putchar_arg::flags, kvprintf(), level, msglogstr(), putchar_arg::n_bufr, putchar_arg::p_bufr, putchar_arg::p_next, putchar_arg::pri, putchar(), putchar_arg::remain, TOCONS, TOLOG, and putchar_arg::tty.

Referenced by log(), and vprintf().

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void hexdump	(	const void *	ptr,
		int	length,
		const char *	hdr,
		int	flags
	)

Definition at line 1073 of file subr_prf.c.

References printf().

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static char * ksprintn	(	char *	nbuf,
		uintmax_t	num,
		int	base,
		int *	len,
		int	upper
	)

static

Definition at line 572 of file subr_prf.c.

References nbuf.

Referenced by kvprintf(), and msglogchar().

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int kvprintf	(	char const *	fmt,
		void()(int, void )	func,
		void *	arg,
		int	radix,
		va_list	ap
	)

Definition at line 614 of file subr_prf.c.

References ksprintn(), MAXNBUF, nbuf, PCHAR, qflag, and stop.

Referenced by _vprintf(), sbuf_vprintf(), sprintf(), tprintf(), ttyprintf(), uprintf(), vsnprintf(), vsnrprintf(), and vsprintf().

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void log	(	int	level,
		const char *	fmt,
			...
	)

Definition at line 289 of file subr_prf.c.

References _vprintf(), log_open, msgbuftrigger, TOCONS, and TOLOG.

Referenced by acct_disable(), acctwatch(), coredump(), do_flush(), encode_long(), ether_poll_deregister(), ether_poll_register(), expand_name(), gz_open(), gzclose(), gzwrite(), intr_event_handle(), killproc(), sigexit(), sonewconn(), sys_abort2(), sys_acct(), syscall_not_present(), tablefull(), and tc_setclock().

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void log_console ( struct uio * uio )

Definition at line 303 of file subr_prf.c.

References cloneuio(), CONSCHUNK, free(), log_console_add_linefeed, log_console_output, malloc(), msgbuftrigger, msglogstr(), putchar_arg::pri, and uiomove().

Referenced by ttyconsdev_write().

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void msgbufinit	(	void *	ptr,
		int	size
	)

Definition at line 973 of file subr_prf.c.

References msgbuf_copy(), msgbuf_reinit(), and msgbufmapped.

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static void msglogchar	(	int	c,
		int	pri
	)

static

Definition at line 932 of file subr_prf.c.

References ksprintn(), MAXNBUF, msgbuf_addchar(), msgbufmapped, and nbuf.

Referenced by putbuf().

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static void msglogstr	(	char *	str,
		int	pri,
		int	filter_cr
	)

static

Definition at line 964 of file subr_prf.c.

References msgbuf_addstr(), and msgbufmapped.

Referenced by _vprintf(), log_console(), and putbuf().

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int printf	(	const char *	fmt,
			...
	)

Definition at line 367 of file subr_prf.c.

References vprintf().

Referenced by _isitmyx(), _mtx_lock_spin_failed(), acl_posix1e_mode_to_entry(), acl_posix1e_mode_to_perm(), adopt(), aio_daemon(), blist_create(), blst_meta_free(), brelse(), bus_print_child_footer(), bus_print_child_header(), calcru1(), cf_get_method(), chgproccnt(), chgptscnt(), chgsbsize(), clock_ct_to_ts(), clock_ts_to_ct(), clone_create(), cluster_rbuild(), cnadd(), config_intrhook_establish(), cpu_tick_calibrate(), cpufreq_curr_sysctl(), cpufreq_levels_sysctl(), destroy_devl(), devclass_alloc_unit(), device_attach(), device_print_prettyname(), device_probe(), device_probe_child(), device_set_devclass(), devstat_add_entry(), disk_err(), domain_add(), dump_write(), elf_obj_lookup(), encode_long(), encode_timeval(), et_register(), exec_gzip_imgact(), exit1(), fail_point_eval_nontrivial(), falloc_noinstall(), firmware_get(), firmware_modevent(), firmware_mountroot(), firmware_register(), fork1(), fork_exit(), getnewbuf_scan(), getnewvnode(), graph_add_edge(), graph_remove_edge(), gzclose(), hexdump(), hhook_vnet_uninit(), init_dynamic_kenv(), init_hwpmc(), inittimecounter(), inittodr(), insert_brand_entry(), issignal(), ithread_execute_handlers(), kdb_backtrace(), kdb_backtrace_thread(), kdb_enter(), kdb_init(), kdb_panic(), kdb_reboot(), kdb_reenter(), kdb_trap(), kern_kldunload(), kern_ptrace(), kern_reboot(), kern_vfs_bio_buffer_alloc(), khelp_modevent(), khelp_new_hhook_registered(), knlist_destroy(), kproc_shutdown(), kqueue_add_filteropts(), kthread_shutdown(), ktr_tracepoint(), lf_activate_lock(), lf_advlockasync(), lf_alloc_lock(), lf_findoverlap(), lf_free_lock(), link_elf_ctf_get(), link_elf_error(), link_elf_link_preload(), link_elf_lookup_symbol(), link_elf_preload_parse_symbols(), linker_addmodules(), linker_file_register_modules(), linker_hints_lookup(), linker_load_dependencies(), linker_load_file(), linker_preload(), loadimage(), lockmgr_printinfo(), logopen(), logtimeout(), lookup(), m_print(), m_pulldown(), make_device(), malloc(), malloc_uninit(), mbp_alloc_page(), mbp_destroy(), mbp_get(), mbp_get_keep(), mi_startup(), module_register(), module_register_init(), msgbuf_reinit(), mtx_pool_create(), panic(), parse_dir_ask(), parse_dir_ask_printenv(), parse_dir_md(), parse_dir_onfail(), parse_directive(), parse_mount(), physio(), pipespace_new(), pmc_soft_ev_register(), power_profile_set_state(), prep_cdevsw(), print_caddr_t(), print_ct(), print_uptime(), print_version(), printf_uuid(), propagate_priority(), register_posix_clock(), relocate_file(), relookup(), res_find(), resettodr(), resource_list_print_type(), root_print_child(), runq_print(), sched_sync(), sdt_probe_stub(), setrunnable(), settime(), shminit(), shutdown_halt(), shutdown_panic(), shutdown_reset(), softclock_call_cc(), stack_print(), stack_print_ddb(), stack_print_short(), start_init(), sys_ioctl(), sysctl_add_oid(), sysctl_register_oid(), sysctl_remove_oid_locked(), sysctl_unregister_oid(), TAILQ_HEAD(), taskqueue_start_threads(), tc_init(), tdq_print(), tdq_setup(), ttcompatgetflags(), tty_ioctl_compat(), tvtohz(), uifree(), userret(), vaccess_acl_posix1e(), vfs_filteropt(), vfs_mountroot_devfs(), vfs_mountroot_parse(), vfs_mountroot_shuffle(), vfs_mountroot_wait(), vfs_register(), vfs_sysctl(), vfs_unmountall(), vm_hold_free_pages(), vn_printf(), vnlru_proc(), vntblinit(), vop_nostrategy(), vop_strategy_pre(), witness_checkorder(), witness_get(), witness_lock_list_get(), witness_thread_exit(), witness_unlock(), and witness_warn().

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static void putbuf	(	int	c,
		struct putchar_arg *	ap
	)

static

Definition at line 393 of file subr_prf.c.

References always_console_output, cnputc(), cnputs(), putchar_arg::flags, msgbuf_addstr(), msglogchar(), msglogstr(), putchar_arg::n_bufr, putchar_arg::p_bufr, putchar_arg::p_next, panicstr, putchar_arg::pri, putchar_arg::remain, TOCONS, and TOLOG.

Referenced by putchar().

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static void putchar	(	int	ch,
		void *	arg
	)

static

Definition at line 450 of file subr_prf.c.

References cnputc(), putchar_arg::flags, kdb_active, panicstr, putbuf(), TOCONS, TOLOG, TOTTY, putchar_arg::tty, and tty_putchar().

Referenced by _vprintf(), tprintf(), ttyprintf(), and uprintf().

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int snprintf	(	char *	str,
		size_t	size,
		const char *	format,
			...
	)

Definition at line 509 of file subr_prf.c.

References vsnprintf().

Referenced by busdma_bufalloc_create(), cpusetobj_strprint(), devaddq(), devclass_add_device(), devctl_notify_f(), gz_open(), init_sleepqueues(), kern_jail_set(), link_elf_lookup_set(), linker_hints_lookup(), linker_lookup_file(), mqfs_read(), msgbuf_addstr(), sched_tdname(), snprintf_uuid(), sysctl_jail_param(), sysctl_kern_eventtimer_choice(), sysctl_kern_eventtimer_timer(), sysctl_rman(), sysctl_sysctl_name(), tdq_setup(), vfs_filteropt(), and vn_printf().

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static void snprintf_func	(	int	ch,
		void *	arg
	)

static

Definition at line 555 of file subr_prf.c.

References snprintf_arg::remain, and snprintf_arg::str.

Referenced by vsnprintf(), and vsnrprintf().

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int sprintf	(	char *	buf,
		const char *	cfmt,
			...
	)

Definition at line 480 of file subr_prf.c.

References kvprintf().

Referenced by linker_find_file_by_name(), make_dev_physpath_alias(), msgbuf_addstr(), setenv(), setenv_static(), sysctl_kern_timecounter_choice(), and termcn_cnregister().

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SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		log_console_output	,
		CTLFLAG_RW	,
		&	log_console_output,
		0	,
		"Duplicate console output to the syslog."
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		log_console_add_linefeed	,
		CTLFLAG_RW	,
		&	log_console_add_linefeed,
		0	,
		"log_console() adds extra newlines."
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		always_console_output	,
		CTLFLAG_RW	,
		&	always_console_output,
		0	,
		"Always output to console despite TIOCCONS."
	)

SYSCTL_INT	(	_security_bsd	,
		OID_AUTO	,
		unprivileged_read_msgbuf	,
		CTLFLAG_RW	,
		&	unprivileged_read_msgbuf,
		0	,
		"Unprivileged processes may read the kernel message buffer"
	)

static int sysctl_kern_msgbuf ( SYSCTL_HANDLER_ARGS )

static

Definition at line 995 of file subr_prf.c.

References buf, msgbuf_lock, msgbuf_peekbytes(), priv_check(), and sysctl_handle_opaque().

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static int sysctl_kern_msgbuf_clear ( SYSCTL_HANDLER_ARGS )

static

Definition at line 1031 of file subr_prf.c.

References msgbuf_clear(), msgbuf_lock, and sysctl_handle_int().

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SYSCTL_PROC	(	_kern	,
		OID_AUTO	,
		msgbuf	,
		CTLTYPE_STRING\|CTLFLAG_RD\|	CTLFLAG_MPSAFE,
		NULL	,
		0	,
		sysctl_kern_msgbuf	,
		"A"	,
		"Contents of kernel message buffer"
	)

SYSCTL_PROC	(	_kern	,
		OID_AUTO	,
		msgbuf_clear	,
		CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_SECURE\|	CTLFLAG_MPSAFE,
		&	msgbuf_clearflag,
		0	,
		sysctl_kern_msgbuf_clear	,
		"I"	,
		"Clear kernel message buffer"
	)