#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 <sys/sbuf.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	BOOT_TAG_SZ 32

#define	BOOT_TAG "---<<BOOT>>---"

#define	CONSCHUNK 128

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

Functions
	__FBSDID ("$FreeBSD$")

static void	msglogchar (int c, int pri)

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

static void	prf_putbuf (char *bufr, int flags, int pri)

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)

	SYSCTL_STRING (_kern, OID_AUTO, boot_tag, CTLFLAG_RDTUN\|CTLFLAG_NOFETCH, current_boot_tag, 0, "Tag added to dmesg at start of boot")

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

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

	SYSCTL_INT (_kern, OID_AUTO, always_console_output, CTLFLAG_RWTUN, &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,...)

void	vtprintf (struct proc p, int pri, const char fmt, va_list ap)

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

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

void	vlog (int level, const char *fmt, va_list ap)

void	log_console (struct uio *uio)

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

int	vprintf (const char *fmt, va_list ap)

static void	prf_putchar (int c, int flags, int pri)

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)

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)

void	sbuf_hexdump (struct sbuf sb, const void ptr, int length, const char *hdr, int flags)

void	counted_warning (unsigned counter, const char msg)

void	sbuf_putbuf (struct sbuf *sb)

int	sbuf_printf_drain (void arg, const char data, int len)

Variables
int	log_open

static bool	msgbufmapped

int	msgbuftrigger

struct msgbuf *	msgbufp

static char	current_boot_tag [BOOT_TAG_SZ+1] = BOOT_TAG

static int	log_console_output = 1

static int	log_console_add_linefeed

static int	always_console_output

static int	msgbuf_clearflag

Macro Definition Documentation

◆ BOOT_TAG

#define BOOT_TAG "---<<BOOT>>---"

Definition at line 135 of file subr_prf.c.

◆ BOOT_TAG_SZ

#define BOOT_TAG_SZ 32

Definition at line 131 of file subr_prf.c.

◆ CONSCHUNK

#define CONSCHUNK 128

Definition at line 331 of file subr_prf.c.

◆ MAXNBUF

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

Definition at line 100 of file subr_prf.c.

◆ PCHAR

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

◆ TOCONS

#define TOCONS 0x01

Definition at line 95 of file subr_prf.c.

◆ TOLOG

#define TOLOG 0x04

Definition at line 97 of file subr_prf.c.

◆ TOTTY

#define TOTTY 0x02

Definition at line 96 of file subr_prf.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ _vprintf()

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

static

Definition at line 273 of file subr_prf.c.

References putchar_arg::flags, flags, kvprintf(), level, putchar_arg::n_bufr, putchar_arg::p_bufr, putchar_arg::p_next, prf_putbuf(), putchar_arg::pri, putchar(), putchar_arg::remain, and putchar_arg::tty.

Referenced by vlog(), and vprintf().

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◆ counted_warning()

void counted_warning	(	unsigned *	counter,
		const char *	msg
	)

Definition at line 1261 of file subr_prf.c.

References log().

Referenced by aio_queue_file().

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◆ hexdump()

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

Definition at line 1152 of file subr_prf.c.

References flags, and printf().

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◆ ksprintn()

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

static

Definition at line 613 of file subr_prf.c.

References nbuf.

Referenced by kvprintf(), and msglogchar().

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◆ kvprintf()

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

Definition at line 655 of file subr_prf.c.

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

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

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◆ log()

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

Definition at line 314 of file subr_prf.c.

References level, and vlog().

Referenced by acct_disable(), acctwatch(), coredump(), corefile_open(), counted_warning(), device_log(), encode_long(), ether_poll_deregister(), ether_poll_register(), kern_abort2(), killproc(), sigexit(), sonewconn(), sys_acct(), syscall_not_present(), tablefull(), tc_setclock(), and vfs_sysctl().

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◆ log_console()

void log_console ( struct uio * uio )

Definition at line 334 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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◆ msgbufinit()

void msgbufinit	(	void *	ptr,
		int	size
	)

Definition at line 1034 of file subr_prf.c.

References current_boot_tag, msgbuf_copy(), msgbuf_reinit(), msgbufmapped, msgbufp, and printf().

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◆ msglogchar()

static void msglogchar	(	int	c,
		int	pri
	)

static

Definition at line 993 of file subr_prf.c.

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

Referenced by prf_putchar().

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◆ msglogstr()

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

static

Definition at line 1025 of file subr_prf.c.

References msgbuf_addstr(), msgbufmapped, msgbufp, and snprintf_arg::str.

Referenced by log_console(), and prf_putbuf().

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◆ prf_putbuf()

static void prf_putbuf	(	char *	bufr,
		int	flags,
		int	pri
	)

static

Definition at line 439 of file subr_prf.c.

References always_console_output, cnputs(), flags, msgbuf_addstr(), msglogstr(), putchar_arg::pri, TOCONS, and TOLOG.

Referenced by _vprintf(), putbuf(), sbuf_printf_drain(), and sbuf_putbuf().

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◆ prf_putchar()

static void prf_putchar	(	int	c,
		int	flags,
		int	pri
	)

static

Definition at line 423 of file subr_prf.c.

References always_console_output, cnputc(), flags, msgbuf_addchar(), msglogchar(), putchar_arg::pri, TOCONS, and TOLOG.

Referenced by putbuf().

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◆ printf()

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

Definition at line 397 of file subr_prf.c.

References vprintf().

Referenced by _falloc_noinstall(), _gone_in(), _gtaskqueue_start_threads(), _isitmyx(), _mtx_lock_indefinite_check(), _taskqueue_start_threads(), acl_posix1e_mode_to_entry(), acl_posix1e_mode_to_perm(), adopt(), blist_create(), boottrace_display(), buf_daemon_shutdown(), bufshutdown(), bufspace_daemon_shutdown(), bus_print_child_domain(), bus_print_child_footer(), bus_print_child_header(), calcru1(), cf_get_method(), chglimit(), clock_bcd_to_ts(), clock_ct_to_ts(), clock_dbgprint_bcd(), clock_dbgprint_ct(), clock_dbgprint_err(), clock_dbgprint_hdr(), clock_dbgprint_ts(), clock_print_bcd(), clock_print_ct(), clock_ts_to_ct(), clockcalib(), 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(), devmap_print_table(), devstat_add_entry(), disk_err(), domain_add(), dump_check_bounds(), dumpsys_cb_dumpdata(), dumpsys_generic(), encode_long(), encode_timeval(), et_register(), exit1(), fail_point_eval_nontrivial(), fail_point_set(), firmware_get_flags(), firmware_modevent(), firmware_mountroot(), firmware_register(), fork1(), fork_exit(), getenv_bool(), getnewvnode(), graph_add_edge(), graph_remove_edge(), hexdump(), hhook_vnet_uninit(), in_epoch_verbose_preempt(), init_dynamic_kenv_from(), init_hwpmc(), inittimecounter(), inittodr(), insert_brand_entry(), ithread_execute_handlers(), kcov_init(), kcsan_enable(), kdb_backtrace(), kdb_backtrace_thread(), kdb_enter(), kdb_init(), kdb_panic(), kdb_reboot(), kdb_reenter(), kdb_trap(), kern_kldunload(), kern_vfs_bio_buffer_alloc(), khelp_modevent(), khelp_new_hhook_registered(), kproc_shutdown(), kqueue_add_filteropts(), kthread_shutdown(), ktls_alloc_thread(), ktls_init(), ktls_work_thread(), 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_load_file(), link_elf_lookup_symbol1(), 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(), m_print(), m_pulldown(), make_device(), malloc_uninit(), maxbcachebuf_adjust(), mi_startup(), module_register(), module_register_init(), msgbuf_reinit(), msgbufinit(), mtx_pool_create(), nosys(), parse_dir_ask(), parse_dir_ask_printenv(), parse_dir_md(), parse_dir_onfail(), parse_directive(), parse_dpcpu(), parse_mount(), physio(), physmem_print_tables(), pipespace_new(), pmc_soft_ev_register(), power_profile_set_state(), prep_cdevsw(), print_caddr_t(), print_uptime(), print_version(), printf_uuid(), prison0_init(), propagate_priority(), register_posix_clock(), relocate_file1(), reroot_conf(), res_find(), resource_list_print_type(), root_print_child(), run_interrupt_driven_config_hooks_warning(), runq_print(), sbuf_printf_drain(), sched_sync(), sdt_probe_stub(), settime(), shminit(), shutdown_halt(), shutdown_panic(), shutdown_reset(), sigprocess(), socket_hhook_deregister(), socket_hhook_register(), softclock_call_cc(), stack_print(), stack_print_ddb(), stack_print_short(), start_init(), start_softclock(), stats_v1_vsd_tdgst_add(), suspend_all_fs(), sys_ioctl(), sysctl_clock_do_io(), sysctl_kern_callout_stat(), sysctl_load_tunable_by_oid_locked(), sysctl_register_oid(), sysctl_remove_oid_locked(), sysctl_unregister_oid(), taskqgroup_attach(), taskqgroup_attach_cpu(), taskqgroup_binder(), tc_init(), tdq_print(), tdq_setup(), thread_count_inc(), ttcompatgetflags(), tty_ioctl_compat(), tvtohz(), uifree(), uiomove_object_page(), unmount_or_warn(), vaccess_acl_posix1e(), vfs_deferred_unmount(), vfs_domount_first(), vfs_donmount(), vfs_filteropt(), vfs_lookup(), vfs_mountroot_devfs(), vfs_mountroot_parse(), vfs_mountroot_shuffle(), vfs_mountroot_wait(), vfs_mountroot_wait_if_neccessary(), vfs_register(), vfs_relookup(), vn_printf(), vntblinit(), vop_nostrategy(), vpanic(), watchdog_fire(), witness_get(), witness_lock_list_get(), and witness_warn().

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◆ putbuf()

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

static

Definition at line 456 of file subr_prf.c.

References putchar_arg::flags, putchar_arg::n_bufr, putchar_arg::p_bufr, putchar_arg::p_next, prf_putbuf(), prf_putchar(), putchar_arg::pri, and putchar_arg::remain.

Referenced by putchar().

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◆ putchar()

static void putchar	(	int	ch,
		void *	arg
	)

static

Definition at line 497 of file subr_prf.c.

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

Referenced by _vprintf(), uprintf(), and vtprintf().

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◆ sbuf_hexdump()

void sbuf_hexdump	(	struct sbuf *	sb,
		const void *	ptr,
		int	length,
		const char *	hdr,
		int	flags
	)

Definition at line 1206 of file subr_prf.c.

References flags, and sbuf_printf().

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◆ sbuf_printf_drain()

int sbuf_printf_drain	(	void *	arg,
		const char *	data,
		int	len
	)

Definition at line 1298 of file subr_prf.c.

References data, prf_putbuf(), printf(), TOCONS, and TOLOG.

Referenced by device_printf(), preload_dump(), and sysctl_warn_reuse().

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◆ sbuf_putbuf()

void sbuf_putbuf ( struct sbuf * sb )

Definition at line 1283 of file subr_prf.c.

References prf_putbuf(), sbuf_data(), TOCONS, and TOLOG.

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◆ snprintf()

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

Definition at line 550 of file subr_prf.c.

References vsnprintf().

Referenced by _gtaskqueue_create(), _taskqueue_create(), alloc_bounce_zone(), bitset_strprint(), boottrace_reset(), busdma_bufalloc_create(), callout_cpu_init(), corefile_open_last(), DeserializeLocation(), DeserializeNumberSigned(), DeserializeNumberUnsigned(), devclass_add_device(), intrcnt_setname(), isrc_update_name(), kern_jail_set(), ktls_alloc_thread(), link_elf_lookup_set(), linker_hints_lookup(), linker_lookup_file(), load_interp(), mqfs_read(), msgbuf_addstr(), qc_init(), sched_tdname(), shm_init(), snprintf_uuid(), sysctl_build_id(), sysctl_debug_witness_channel(), sysctl_jail_param(), sysctl_kern_eventtimer_timer(), sysctl_rman(), sysctl_sysctl_name(), taskqgroup_attach(), taskqgroup_attach_cpu(), tdq_setup(), vfs_filteropt(), and vn_printf().

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◆ snprintf_func()

static void snprintf_func	(	int	ch,
		void *	arg
	)

static

Definition at line 596 of file subr_prf.c.

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

Referenced by vsnprintf(), and vsnrprintf().

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◆ sprintf()

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

Definition at line 521 of file subr_prf.c.

References buf, and kvprintf().

Referenced by kern_setenv(), linker_find_file_by_name(), make_dev_physpath_alias(), msgbuf_addstr(), setenv_static(), stats_tpl_sample_rates(), sysctl_handle_domainset(), and termcn_cnregister().

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◆ SYSCTL_INT() [1/3]

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

◆ SYSCTL_INT() [2/3]

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

◆ SYSCTL_INT() [3/3]

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

◆ sysctl_kern_msgbuf()

static int sysctl_kern_msgbuf ( SYSCTL_HANDLER_ARGS )

static

Definition at line 1059 of file subr_prf.c.

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

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◆ sysctl_kern_msgbuf_clear()

static int sysctl_kern_msgbuf_clear ( SYSCTL_HANDLER_ARGS )

static

Definition at line 1110 of file subr_prf.c.

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

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◆ SYSCTL_PROC() [1/2]

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() [2/2]

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"
	)