subr_sbuf.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/ctype.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <machine/stdarg.h>
#include <sys/sbuf.h>

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Macros
#define	SBMALLOC(size)   malloc(size, M_SBUF, M_WAITOK)
#define	SBFREE(buf)   free(buf, M_SBUF)
#define	SBUF_ISDYNAMIC(s)   ((s)->s_flags & SBUF_DYNAMIC)
#define	SBUF_ISDYNSTRUCT(s)   ((s)->s_flags & SBUF_DYNSTRUCT)
#define	SBUF_ISFINISHED(s)   ((s)->s_flags & SBUF_FINISHED)
#define	SBUF_HASROOM(s)   ((s)->s_len < (s)->s_size - 1)
#define	SBUF_FREESPACE(s)   ((s)->s_size - ((s)->s_len + 1))
#define	SBUF_CANEXTEND(s)   ((s)->s_flags & SBUF_AUTOEXTEND)
#define	SBUF_ISSECTION(s)   ((s)->s_flags & SBUF_INSECTION)
#define	SBUF_SETFLAG(s, f)   do { (s)->s_flags |= (f); } while (0)
#define	SBUF_CLEARFLAG(s, f)   do { (s)->s_flags &= ~(f); } while (0)
#define	SBUF_MINEXTENDSIZE   16 /* Should be power of 2. */
#define	SBUF_MAXEXTENDSIZE   4096
#define	SBUF_MAXEXTENDINCR   4096
#define	assert_sbuf_integrity(s)   do { } while (0)
#define	assert_sbuf_state(s, i)   do { } while (0)

Functions
	__FBSDID ("$BSDSUniX$")
static	MALLOC_DEFINE (M_SBUF,"sbuf","string buffers")
static int	sbuf_extendsize (int size)
static int	sbuf_extend (struct sbuf *s, int addlen)
static struct sbuf *	sbuf_newbuf (struct sbuf *s, char *buf, int length, int flags)
struct sbuf *	sbuf_new (struct sbuf *s, char *buf, int length, int flags)
struct sbuf *	sbuf_uionew (struct sbuf *s, struct uio *uio, int *error)
void	sbuf_clear (struct sbuf *s)
int	sbuf_setpos (struct sbuf *s, ssize_t pos)
void	sbuf_set_drain (struct sbuf *s, sbuf_drain_func *func, void *ctx)
static int	sbuf_drain (struct sbuf *s)
static void	sbuf_put_byte (struct sbuf *s, int c)
int	sbuf_bcat (struct sbuf *s, const void *buf, size_t len)
int	sbuf_bcopyin (struct sbuf *s, const void *uaddr, size_t len)
int	sbuf_bcpy (struct sbuf *s, const void *buf, size_t len)
int	sbuf_cat (struct sbuf *s, const char *str)
int	sbuf_copyin (struct sbuf *s, const void *uaddr, size_t len)
int	sbuf_cpy (struct sbuf *s, const char *str)
static void	sbuf_putc_func (int c, void *arg)
int	sbuf_vprintf (struct sbuf *s, const char *fmt, va_list ap)
int	sbuf_printf (struct sbuf *s, const char *fmt,...)
int	sbuf_putc (struct sbuf *s, int c)
int	sbuf_trim (struct sbuf *s)
int	sbuf_error (const struct sbuf *s)
int	sbuf_finish (struct sbuf *s)
char *	sbuf_data (struct sbuf *s)
ssize_t	sbuf_len (struct sbuf *s)
void	sbuf_delete (struct sbuf *s)
int	sbuf_done (const struct sbuf *s)
void	sbuf_start_section (struct sbuf *s, ssize_t *old_lenp)
ssize_t	sbuf_end_section (struct sbuf *s, ssize_t old_len, size_t pad, int c)

Macro Definition Documentation

#define assert_sbuf_integrity

(

s

)

do { } while (0)

Definition at line 122 of file subr_sbuf.c.

Referenced by sbuf_bcat(), sbuf_bcopyin(), sbuf_bcpy(), sbuf_cat(), sbuf_clear(), sbuf_copyin(), sbuf_cpy(), sbuf_data(), sbuf_delete(), sbuf_end_section(), sbuf_finish(), sbuf_len(), sbuf_put_byte(), sbuf_set_drain(), sbuf_setpos(), sbuf_start_section(), sbuf_trim(), and sbuf_vprintf().

#define assert_sbuf_state	(		s,
			i
	)		do { } while (0)

Definition at line 123 of file subr_sbuf.c.

Referenced by sbuf_bcat(), sbuf_bcopyin(), sbuf_bcpy(), sbuf_cat(), sbuf_copyin(), sbuf_cpy(), sbuf_data(), sbuf_end_section(), sbuf_finish(), sbuf_put_byte(), sbuf_set_drain(), sbuf_setpos(), sbuf_start_section(), sbuf_trim(), and sbuf_vprintf().

#define SBFREE

(

buf

)

free(buf, M_SBUF)

Definition at line 56 of file subr_sbuf.c.

Referenced by sbuf_delete(), sbuf_extend(), and sbuf_new().

#define SBMALLOC

(

size

)

malloc(size, M_SBUF, M_WAITOK)

Definition at line 55 of file subr_sbuf.c.

Referenced by sbuf_extend(), sbuf_new(), and sbuf_newbuf().

#define SBUF_CANEXTEND

(

s

)

((s)->s_flags & SBUF_AUTOEXTEND)

Definition at line 71 of file subr_sbuf.c.

Referenced by sbuf_extend().

#define SBUF_CLEARFLAG	(		s,
			f
	)		do { (s)->s_flags &= ~(f); } while (0)

Definition at line 78 of file subr_sbuf.c.

Referenced by sbuf_clear(), and sbuf_end_section().

#define SBUF_FREESPACE

(

s

)

((s)->s_size - ((s)->s_len + 1))

Definition at line 70 of file subr_sbuf.c.

Referenced by sbuf_bcopyin(), sbuf_copyin(), and sbuf_put_byte().

#define SBUF_HASROOM

(

s

)

((s)->s_len < (s)->s_size - 1)

Definition at line 69 of file subr_sbuf.c.

#define SBUF_ISDYNAMIC

(

s

)

((s)->s_flags & SBUF_DYNAMIC)

Definition at line 66 of file subr_sbuf.c.

Referenced by sbuf_delete(), and sbuf_extend().

#define SBUF_ISDYNSTRUCT

(

s

)

((s)->s_flags & SBUF_DYNSTRUCT)

Definition at line 67 of file subr_sbuf.c.

Referenced by sbuf_delete().

#define SBUF_ISFINISHED

(

s

)

((s)->s_flags & SBUF_FINISHED)

Definition at line 68 of file subr_sbuf.c.

Referenced by sbuf_done().

#define SBUF_ISSECTION

(

s

)

((s)->s_flags & SBUF_INSECTION)

Definition at line 72 of file subr_sbuf.c.

Referenced by sbuf_copyin(), sbuf_end_section(), sbuf_put_byte(), sbuf_setpos(), sbuf_start_section(), sbuf_trim(), and sbuf_uionew().

#define SBUF_MAXEXTENDINCR   4096

Definition at line 87 of file subr_sbuf.c.

Referenced by sbuf_extendsize().

#define SBUF_MAXEXTENDSIZE   4096

Definition at line 86 of file subr_sbuf.c.

Referenced by sbuf_extendsize().

#define SBUF_MINEXTENDSIZE   16 /* Should be power of 2. */

Definition at line 80 of file subr_sbuf.c.

Referenced by sbuf_extendsize().

#define SBUF_SETFLAG	(		s,
			f
	)		do { (s)->s_flags |= (f); } while (0)

Definition at line 77 of file subr_sbuf.c.

Referenced by sbuf_extend(), sbuf_finish(), sbuf_new(), sbuf_newbuf(), and sbuf_start_section().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

static MALLOC_DEFINE ( M_SBUF  , "sbuf"  , "string buffers"    )

static

int sbuf_bcat	(	struct sbuf *	s,
		const void *	buf,
		size_t	len
	)

Definition at line 389 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, buf, and sbuf_put_byte().

Referenced by corehdr(), export_fd_to_sb(), get_ps_strings(), kern_proc_out(), kern_proc_vmmap_out(), note_fpregset(), note_procstat_auxv(), note_procstat_files(), note_procstat_groups(), note_procstat_osrel(), note_procstat_proc(), note_procstat_psstrings(), note_procstat_rlimit(), note_procstat_umask(), note_procstat_vmmap(), note_prpsinfo(), note_prstatus(), note_threadmd(), note_thrmisc(), proc_getauxv(), putnote(), sbuf_bcpy(), and sysctl_kern_malloc_stats().

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int sbuf_bcopyin	(	struct sbuf *	s,
		const void *	uaddr,
		size_t	len
	)

Definition at line 412 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_extend(), and SBUF_FREESPACE.

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int sbuf_bcpy	(	struct sbuf *	s,
		const void *	buf,
		size_t	len
	)

Definition at line 441 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_bcat(), and sbuf_clear().

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int sbuf_cat	(	struct sbuf *	s,
		const char *	str
	)

Definition at line 455 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, and sbuf_put_byte().

Referenced by sbuf_cpy(), and sys_abort2().

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void sbuf_clear

(

struct sbuf *

s

)

Definition at line 269 of file subr_sbuf.c.

References assert_sbuf_integrity, and SBUF_CLEARFLAG.

Referenced by sbuf_bcpy(), sbuf_cpy(), sys_abort2(), sysctl_debug_witness_badstacks(), sysctl_kern_console(), and vfs_mountroot().

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int sbuf_copyin	(	struct sbuf *	s,
		const void *	uaddr,
		size_t	len
	)

Definition at line 477 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_extend(), SBUF_FREESPACE, and SBUF_ISSECTION.

Referenced by sys_abort2().

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int sbuf_cpy	(	struct sbuf *	s,
		const char *	str
	)

Definition at line 517 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_cat(), and sbuf_clear().

Referenced by cpufreq_levels_sysctl(), and cpufreq_settings_sysctl().

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char* sbuf_data

(

struct sbuf *

s

)

Definition at line 721 of file subr_sbuf.c.

References assert_sbuf_integrity, and assert_sbuf_state.

Referenced by cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), exec_shell_imgact(), fail_point_sysctl(), mount_argf(), sys_abort2(), sysctl_debug_witness_badstacks(), sysctl_kern_console(), and vfs_mountroot_parse().

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void sbuf_delete

(

struct sbuf *

s

)

Definition at line 753 of file subr_sbuf.c.

References assert_sbuf_integrity, SBFREE, SBUF_ISDYNAMIC, and SBUF_ISDYNSTRUCT.

Referenced by corehdr(), cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), exec_shell_imgact(), expand_name(), fail_point_sysctl(), kdb_sysctl_available(), mount_argf(), note_procstat_auxv(), note_procstat_files(), note_procstat_vmmap(), sbuf_uionew(), sys_abort2(), sysctl_debug_witness_badstacks(), sysctl_debug_witness_fullgraph(), sysctl_kern_console(), sysctl_kern_malloc_stats(), sysctl_kern_proc_args(), sysctl_kern_proc_auxv(), sysctl_kern_proc_env(), sysctl_kern_proc_filedesc(), sysctl_kern_proc_vmmap(), sysctl_out_proc(), and vfs_mountroot().

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int sbuf_done

(

const struct sbuf *

s

)

Definition at line 772 of file subr_sbuf.c.

References SBUF_ISFINISHED.

static int sbuf_drain ( struct sbuf *  s )

static

Definition at line 326 of file subr_sbuf.c.

Referenced by sbuf_finish(), and sbuf_put_byte().

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ssize_t sbuf_end_section	(	struct sbuf *	s,
		ssize_t	old_len,
		size_t	pad,
		int	c
	)

Definition at line 807 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, SBUF_CLEARFLAG, SBUF_ISSECTION, and sbuf_put_byte().

Referenced by corehdr(), and putnote().

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int sbuf_error

(

const struct sbuf *

s

)

Definition at line 684 of file subr_sbuf.c.

Referenced by expand_name().

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static int sbuf_extend ( struct sbuf *  s, int  addlen  )

static

Definition at line 152 of file subr_sbuf.c.

References SBFREE, SBMALLOC, SBUF_CANEXTEND, sbuf_extendsize(), SBUF_ISDYNAMIC, and SBUF_SETFLAG.

Referenced by sbuf_bcopyin(), sbuf_copyin(), and sbuf_put_byte().

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static int sbuf_extendsize ( int  size )

static

Definition at line 133 of file subr_sbuf.c.

References SBUF_MAXEXTENDINCR, SBUF_MAXEXTENDSIZE, and SBUF_MINEXTENDSIZE.

Referenced by sbuf_extend(), and sbuf_newbuf().

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int sbuf_finish

(

struct sbuf *

s

)

Definition at line 694 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_drain(), and SBUF_SETFLAG.

Referenced by corehdr(), cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), exec_shell_imgact(), expand_name(), fail_point_sysctl(), kdb_sysctl_available(), mount_argf(), note_procstat_auxv(), note_procstat_files(), note_procstat_vmmap(), sys_abort2(), sysctl_debug_witness_badstacks(), sysctl_debug_witness_fullgraph(), sysctl_kern_console(), sysctl_kern_malloc_stats(), sysctl_kern_proc_args(), sysctl_kern_proc_auxv(), sysctl_kern_proc_env(), sysctl_kern_proc_filedesc(), sysctl_kern_proc_vmmap(), sysctl_out_proc(), and vfs_mountroot().

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ssize_t sbuf_len

(

struct sbuf *

s

)

Definition at line 736 of file subr_sbuf.c.

References assert_sbuf_integrity.

Referenced by cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), expand_name(), fail_point_sysctl(), mount_argf(), sysctl_debug_witness_badstacks(), and sysctl_kern_console().

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struct sbuf* sbuf_new	(	struct sbuf *	s,
		char *	buf,
		int	length,
		int	flags
	)

Definition at line 211 of file subr_sbuf.c.

References SBFREE, SBMALLOC, sbuf_newbuf(), and SBUF_SETFLAG.

Referenced by corehdr(), cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), expand_name(), fail_point_sysctl(), note_procstat_auxv(), note_procstat_files(), note_procstat_vmmap(), sbuf_new_for_sysctl(), sbuf_uionew(), sys_abort2(), sysctl_debug_witness_badstacks(), and sysctl_kern_console().

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static struct sbuf* sbuf_newbuf ( struct sbuf *  s, char *  buf, int  length, int  flags  )

static

Definition at line 179 of file subr_sbuf.c.

References buf, SBMALLOC, sbuf_extendsize(), and SBUF_SETFLAG.

Referenced by sbuf_new().

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int sbuf_printf	(	struct sbuf *	s,
		const char *	fmt,
			...
	)

Definition at line 632 of file subr_sbuf.c.

References result, and sbuf_vprintf().

Referenced by cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), exec_shell_imgact(), expand_name(), fail_point_get(), kdb_sysctl_available(), sbuf_printf_uuid(), stack_sbuf_print(), sys_abort2(), sysctl_debug_witness_badstacks(), sysctl_debug_witness_fullgraph(), sysctl_kern_console(), vfs_mountroot_conf0(), vfs_mountroot_readconf(), and witness_add_fullgraph().

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static void sbuf_put_byte ( struct sbuf *  s, int  c  )

static

Definition at line 360 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, sbuf_drain(), sbuf_extend(), SBUF_FREESPACE, and SBUF_ISSECTION.

Referenced by sbuf_bcat(), sbuf_cat(), sbuf_end_section(), sbuf_putc(), and sbuf_putc_func().

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int sbuf_putc	(	struct sbuf *	s,
		int	c
	)

Definition at line 647 of file subr_sbuf.c.

References sbuf_put_byte().

Referenced by expand_name().

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static void sbuf_putc_func ( int  c, void *  arg  )

static

Definition at line 537 of file subr_sbuf.c.

References sbuf_put_byte().

Referenced by sbuf_vprintf().

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void sbuf_set_drain	(	struct sbuf *	s,
		sbuf_drain_func *	func,
		void *	ctx
	)

Definition at line 311 of file subr_sbuf.c.

References assert_sbuf_integrity, and assert_sbuf_state.

Referenced by corehdr(), note_procstat_auxv(), note_procstat_files(), note_procstat_vmmap(), and sbuf_new_for_sysctl().

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int sbuf_setpos	(	struct sbuf *	s,
		ssize_t	pos
	)

Definition at line 286 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, and SBUF_ISSECTION.

void sbuf_start_section	(	struct sbuf *	s,
		ssize_t *	old_lenp
	)

Definition at line 782 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, SBUF_ISSECTION, and SBUF_SETFLAG.

Referenced by corehdr(), and putnote().

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int sbuf_trim

(

struct sbuf *

s

)

Definition at line 660 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, and SBUF_ISSECTION.

Referenced by cpufreq_levels_sysctl(), cpufreq_settings_sysctl(), fail_point_sysctl(), and sys_abort2().

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struct sbuf* sbuf_uionew	(	struct sbuf *	s,
		struct uio *	uio,
		int *	error
	)

Definition at line 239 of file subr_sbuf.c.

References sbuf_delete(), SBUF_ISSECTION, sbuf_new(), and uiomove().

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int sbuf_vprintf	(	struct sbuf *	s,
		const char *	fmt,
		va_list	ap
	)

Definition at line 545 of file subr_sbuf.c.

References assert_sbuf_integrity, assert_sbuf_state, kvprintf(), and sbuf_putc_func().

Referenced by mount_argf(), and sbuf_printf().

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