kern_gzio.c File Reference

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
#include <sys/syslog.h>
#include <sys/endian.h>
#include <net/zutil.h>
#include <sys/libkern.h>
#include <sys/mount.h>

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Data Structures
struct	gz_stream

Macros
#define	GZ_HEADER_LEN   10
#define	Z_BUFSIZE   16384
#define	Z_PRINTF_BUFSIZE   4096
#define	ALLOC(size)   malloc(size, M_TEMP, M_WAITOK | M_ZERO)
#define	TRYFREE(p)   {if (p) free(p, M_TEMP);}
#define	ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
#define	HEAD_CRC   0x02 /* bit 1 set: header CRC present */
#define	EXTRA_FIELD   0x04 /* bit 2 set: extra field present */
#define	ORIG_NAME   0x08 /* bit 3 set: original file name present */
#define	COMMENT   0x10 /* bit 4 set: file comment present */
#define	RESERVED   0xE0 /* bits 5..7: reserved */

Typedefs
typedef struct gz_stream	gz_stream

Functions
local int do_flush	OF ((gzFile file, int flush))
local int destroy	OF ((gz_stream *s))
local void putU32	OF ((gz_stream *file, uint32_t x))
local void *gz_alloc	OF ((void *notused, u_int items, u_int size))
local void gz_free	OF ((void *notused, void *ptr))
gzFile	gz_open (char *path, const char *mode, struct vnode *vp) const
local int	destroy (gz_stream *s)
int ZEXPORT	gzwrite (gzFile file, const voidp buf, unsigned len)
local int	do_flush (gzFile file, int flush)
int ZEXPORT	gzflush (gzFile file, int flush)
local void	putU32 (gz_stream *s, uint32_t x)
int ZEXPORT	gzclose (gzFile file)
static void *	gz_alloc (void *notused __unused, u_int items, u_int size)
static void	gz_free (void *opaque __unused, void *ptr)

Variables
static int	gz_magic [2] = {0x1f, 0x8b}

Macro Definition Documentation

#define ALLOC

(

size

)

malloc(size, M_TEMP, M_WAITOK | M_ZERO)

Definition at line 42 of file kern_gzio.c.

Referenced by gz_open().

#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */

Definition at line 48 of file kern_gzio.c.

#define COMMENT   0x10 /* bit 4 set: file comment present */

Definition at line 52 of file kern_gzio.c.

#define EXTRA_FIELD   0x04 /* bit 2 set: extra field present */

Definition at line 50 of file kern_gzio.c.

#define GZ_HEADER_LEN   10

Definition at line 29 of file kern_gzio.c.

Referenced by gz_open().

#define HEAD_CRC   0x02 /* bit 1 set: header CRC present */

Definition at line 49 of file kern_gzio.c.

#define ORIG_NAME   0x08 /* bit 3 set: original file name present */

Definition at line 51 of file kern_gzio.c.

#define RESERVED   0xE0 /* bits 5..7: reserved */

Definition at line 53 of file kern_gzio.c.

#define TRYFREE

(

p

)

{if (p) free(p, M_TEMP);}

Definition at line 43 of file kern_gzio.c.

Referenced by destroy().

#define Z_BUFSIZE   16384

Definition at line 35 of file kern_gzio.c.

Referenced by do_flush(), gz_open(), and gzwrite().

#define Z_PRINTF_BUFSIZE   4096

Definition at line 39 of file kern_gzio.c.

Typedef Documentation

typedef struct gz_stream gz_stream

Function Documentation

local int destroy

(

gz_stream *

s

)

Definition at line 185 of file kern_gzio.c.

References TRYFREE.

Referenced by gz_open(), and gzclose().

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local int do_flush	(	gzFile	file,
		int	flush
	)

Definition at line 268 of file kern_gzio.c.

References gz_stream::file, log(), gz_stream::mode, gz_stream::outbuf, gz_stream::outoff, gz_stream::stream, vn_rdwr_inchunks(), Z_BUFSIZE, and gz_stream::z_err.

Referenced by gzclose(), and gzflush().

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static void* gz_alloc ( void *notused  __unused, u_int  items, u_int  size  )

static

Definition at line 393 of file kern_gzio.c.

Referenced by gz_open().

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static void gz_free ( void *opaque  __unused, void *  ptr  )

static

Definition at line 402 of file kern_gzio.c.

Referenced by gz_open().

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gzFile gz_open	(	char *	path,
		const char *	mode,
		struct vnode *	vp
	)		const

Definition at line 88 of file kern_gzio.c.

References ALLOC, buf, gz_stream::crc, destroy(), gz_stream::file, gz_stream::flags, gz_alloc(), gz_free(), GZ_HEADER_LEN, gz_magic, gz_stream::inbuf, level, log(), gz_stream::mode, mode, gz_stream::msg, gz_stream::outbuf, gz_stream::outoff, gz_stream::path, snprintf(), gz_stream::startpos, gz_stream::stream, gz_stream::transparent, vn_rdwr(), Z_BUFSIZE, gz_stream::z_eof, and gz_stream::z_err.

Referenced by coredump().

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int ZEXPORT gzclose

(

gzFile

file

)

Definition at line 363 of file kern_gzio.c.

References gz_stream::crc, destroy(), do_flush(), log(), gz_stream::mode, printf(), putU32(), and gz_stream::stream.

Referenced by coredump().

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int ZEXPORT gzflush	(	gzFile	file,
		int	flush
	)

Definition at line 324 of file kern_gzio.c.

References do_flush(), and gz_stream::z_err.

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int ZEXPORT gzwrite	(	gzFile	file,
		const voidp	buf,
		unsigned	len
	)

Definition at line 213 of file kern_gzio.c.

References gz_stream::crc, gz_stream::file, log(), gz_stream::mode, gz_stream::outbuf, gz_stream::outoff, gz_stream::stream, vn_rdwr_inchunks(), Z_BUFSIZE, and gz_stream::z_err.

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local int do_flush OF

(

(gzFile file, int flush)

)

local int destroy OF

(

(gz_stream *s)

)

local void putU32 OF

(

(gz_stream *file, uint32_t x)

)

local void* gz_alloc OF

(

(void *notused, u_int items, u_int size)

)

local void gz_free OF

(

(void *notused, void *ptr)

)

local void putU32	(	gz_stream *	s,
		uint32_t	x
	)

Definition at line 339 of file kern_gzio.c.

References gz_stream::outoff, and vn_rdwr().

Referenced by gzclose().

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Variable Documentation

int gz_magic[2] = {0x1f, 0x8b}

static

Definition at line 45 of file kern_gzio.c.

Referenced by gz_open().