lib/tar.c File Reference

Handle tar payloads within rpm packages. More...

#include "system.h"
#include <rpmio_internal.h>
#include <rpmlib.h>
#include "tar.h"
#include "fsm.h"
#include "ugid.h"
#include "rpmerr.h"
#include "debug.h"

Include dependency graph for tar.c:

Go to the source code of this file.

Functions
static int	strntoul (const char *str, char **endptr, int base, int num)
	Convert string to unsigned integer (with buffer size check).
static int	tarHeaderReadName (FSM_t fsm, int len, const char **fnp)
	Read long file/link name from tar archive.
int	tarHeaderRead (FSM_t fsm, struct stat *st)
	Read tar header from payload.
static int	tarHeaderWriteName (FSM_t fsm, const char *path)
	Write long file/link name into tar archive.
static int	tarHeaderWriteBlock (FSM_t fsm, struct stat *st, tarHeader hdr)
	Write tar header block with checksum into tar archive.
int	tarHeaderWrite (FSM_t fsm, struct stat *st)
	Write tar header to payload.
int	tarTrailerWrite (FSM_t fsm)
	Write cpio trailer to payload.
Variables
int	_tar_debug = 0
static int	nochksum = 0

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Detailed Description

Handle tar payloads within rpm packages.

Definition in file tar.c.

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Function Documentation

static int strntoul	(	const char *	str,
		char **	endptr,
		int	base,
		int	num
	)			[static]

Convert string to unsigned integer (with buffer size check).

Parameters:

str

input string

Return values:

endptr

address of 1st character not processed

Parameters:

	base	numerical conversion base
	num	max no. of bytes to read

Returns:

converted integer

Definition at line 34 of file tar.c.

References alloca(), and StringBufRec::buf.

int tarHeaderRead	(	FSM_t	fsm,
		struct stat *	st
	)

Read tar header from payload.

Return values:

	fsm	file path and stat info
	st

Returns:

0 on success

Definition at line 95 of file tar.c.

References _tar_debug, tarHeader_s::checksum, CPIOERR_BAD_HEADER, CPIOERR_BAD_MAGIC, CPIOERR_HDR_TRAILER, CPIOERR_READ_FAILED, tarHeader_s::devMajor, tarHeader_s::devMinor, tarHeader_s::filesize, FSM_DREAD, fsmNext(), tarHeader_s::gid, tarHeader_s::linkname, fsm_s::lpath, tarHeader_s::magic, major, makedev, minor, tarHeader_s::mode, tarHeader_s::mtime, tarHeader_s::name, nochksum, fsm_s::path, fsm_s::rdnb, strntoul(), TAR_BLOCK_SIZE, TAR_MAGIC, tarHeaderReadName(), tarHeader_s::typeflag, tarHeader_s::uid, fsm_s::wrbuf, fsm_s::wrlen, and xmalloc().

Referenced by fsmSetup().

static int tarHeaderReadName	(	FSM_t	fsm,
		int	len,
		const char **	fnp
	)			[static]

Read long file/link name from tar archive.

Parameters:

	fsm	file state machine
	len	no. bytes of name

Return values:

*fnp

long file/link name

Returns:

0 on success

Definition at line 65 of file tar.c.

References _free(), CPIOERR_READ_FAILED, FSM_DREAD, fsmNext(), fsm_s::rdnb, TAR_BLOCK_SIZE, fsm_s::wrbuf, fsm_s::wrlen, and xmalloc().

Referenced by tarHeaderRead().

int tarHeaderWrite	(	FSM_t	fsm,
		struct stat *	st
	)

Write tar header to payload.

Return values:

fsm

file path and stat info

Parameters:

st

Returns:

0 on success

Definition at line 349 of file tar.c.

References _tar_debug, tarHeader_s::devMajor, tarHeader_s::devMinor, tarHeader_s::filesize, FSM_PAD, fsmNext(), tarHeader_s::gid, gidToGname(), tarHeader_s::gname, tarHeader_s::linkname, fsm_s::lpath, major, minor, tarHeader_s::mode, tarHeader_s::mtime, tarHeader_s::name, fsm_s::path, fsm_s::rdbuf, S_ISLNK, S_ISSOCK, tarHeaderWriteBlock(), tarHeaderWriteName(), tarHeader_s::typeflag, tarHeader_s::uid, uidToUname(), and tarHeader_s::uname.

Referenced by fsmSetup(), and writeLinkedFile().

static int tarHeaderWriteBlock	(	FSM_t	fsm,
		struct stat *	st,
		tarHeader	hdr
	)			[static]

Write tar header block with checksum into tar archive.

Parameters:

	fsm	file state machine
	st	file info
	hdr	tar header block

Returns:

0 on success

Definition at line 310 of file tar.c.

References _tar_debug, tarHeader_s::checksum, CPIOERR_WRITE_FAILED, FSM_DWRITE, fsmNext(), tarHeader_s::magic, fsm_s::path, fsm_s::rdnb, stpcpy(), TAR_BLOCK_SIZE, TAR_MAGIC, TAR_VERSION, tarHeader_s::typeflag, and fsm_s::wrnb.

Referenced by tarHeaderWrite().

static int tarHeaderWriteName	(	FSM_t	fsm,
		const char *	path
	)			[static]

Write long file/link name into tar archive.

Parameters:

	fsm	file state machine
	path	long file/link name

Returns:

0 on success

Definition at line 271 of file tar.c.

References _tar_debug, CPIOERR_WRITE_FAILED, FSM_DWRITE, FSM_PAD, fsmNext(), fsm_s::rdbuf, fsm_s::rdnb, TAR_BLOCK_SIZE, and fsm_s::wrnb.

Referenced by tarHeaderWrite().

int tarTrailerWrite

(

FSM_t

fsm

)

Write cpio trailer to payload.

Return values:

fsm

file path and stat info

Returns:

0 on success

Definition at line 455 of file tar.c.

References _tar_debug, fsm_s::blksize, FSM_PAD, and fsmNext().

Referenced by fsmSetup().

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Variable Documentation

int _tar_debug = 0

Definition at line 21 of file tar.c.

Referenced by tarHeaderRead(), tarHeaderWrite(), tarHeaderWriteBlock(), tarHeaderWriteName(), and tarTrailerWrite().

int nochksum = 0 [static]

Definition at line 24 of file tar.c.

Referenced by tarHeaderRead().