lib/cpio.c File Reference

Handle cpio payloads within rpm packages. More...

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

Go to the source code of this file.

Defines
#define	GET_NUM_FIELD(phys, log)
#define	SET_NUM_FIELD(phys, val, space)
Functions
static int	strntoul (const char *str, char **endptr, int base, int num)
	Convert string to unsigned integer (with buffer size check).
int	cpioTrailerWrite (FSM_t fsm)
	Write cpio trailer.
int	cpioHeaderWrite (FSM_t fsm, struct stat *st)
	Write cpio header.
int	cpioHeaderRead (FSM_t fsm, struct stat *st)
	Read cpio header.
const char *const	cpioStrerror (int rc)
	Return formatted error message on payload handling failure.

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Detailed Description

Handle cpio payloads within rpm packages.

Warning:

FIXME: We don't translate between cpio and system mode bits! These should both be the same, but really odd things are going to happen if that's not true!

Definition in file cpio.c.

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Define Documentation

#define GET_NUM_FIELD	(	phys,
		log		)

Value:

/*@-boundswrite@*/ \
        log = strntoul(phys, &end, 16, sizeof(phys)); \
        /*@=boundswrite@*/ \
        if ( (end - phys) != sizeof(phys) ) return CPIOERR_BAD_HEADER;

Definition at line 53 of file cpio.c.

Referenced by cpioHeaderRead().

#define SET_NUM_FIELD	(	phys,
		val,
		space		)

Value:

sprintf(space, "%8.8lx", (unsigned long) (val)); \
        /*@-boundsread@*/ \
        memcpy(phys, space, 8) \

Definition at line 58 of file cpio.c.

Referenced by cpioHeaderWrite().

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Function Documentation

int cpioHeaderRead	(	FSM_t	fsm,
		struct stat *	st
	)

Read cpio header.

Return values:

	fsm	file path and stat info
	st

Returns:

0 on success

Definition at line 130 of file cpio.c.

References _free(), CPIO_CRC_MAGIC, CPIO_NEWC_MAGIC, CPIOERR_BAD_HEADER, CPIOERR_BAD_MAGIC, CPIOERR_READ_FAILED, cpioCrcPhysicalHeader::devMajor, cpioCrcPhysicalHeader::devMinor, cpioCrcPhysicalHeader::filesize, FSM_DREAD, fsmNext(), GET_NUM_FIELD, cpioCrcPhysicalHeader::gid, cpioCrcPhysicalHeader::inode, cpioCrcPhysicalHeader::magic, major, makedev, minor, cpioCrcPhysicalHeader::mode, cpioCrcPhysicalHeader::mtime, cpioCrcPhysicalHeader::namesize, cpioCrcPhysicalHeader::nlink, fsm_s::path, PHYS_HDR_SIZE, cpioCrcPhysicalHeader::rdevMajor, cpioCrcPhysicalHeader::rdevMinor, fsm_s::rdnb, cpioCrcPhysicalHeader::uid, fsm_s::wrbuf, fsm_s::wrlen, fsm_s::wrsize, and xmalloc().

int cpioHeaderWrite	(	FSM_t	fsm,
		struct stat *	st
	)

Write cpio header.

Return values:

fsm

file path and stat info

Parameters:

st

Returns:

0 on success

Definition at line 92 of file cpio.c.

References cpioCrcPhysicalHeader::checksum, CPIO_NEWC_MAGIC, CPIOERR_WRITE_FAILED, cpioCrcPhysicalHeader::devMajor, cpioCrcPhysicalHeader::devMinor, cpioCrcPhysicalHeader::filesize, FSM_DWRITE, FSM_PAD, fsmNext(), cpioCrcPhysicalHeader::gid, cpioCrcPhysicalHeader::inode, cpioCrcPhysicalHeader::magic, major, minor, cpioCrcPhysicalHeader::mode, cpioCrcPhysicalHeader::mtime, cpioCrcPhysicalHeader::namesize, cpioCrcPhysicalHeader::nlink, fsm_s::path, PHYS_HDR_SIZE, fsm_s::rdbuf, cpioCrcPhysicalHeader::rdevMajor, cpioCrcPhysicalHeader::rdevMinor, fsm_s::rdnb, SET_NUM_FIELD, cpioCrcPhysicalHeader::uid, and fsm_s::wrnb.

int cpioTrailerWrite

(

FSM_t

fsm

)

Write cpio trailer.

Return values:

fsm

file path and stat info

Returns:

0 on success

Definition at line 64 of file cpio.c.

References CPIO_NEWC_MAGIC, CPIO_TRAILER, FSM_DWRITE, FSM_PAD, fsmNext(), PHYS_HDR_SIZE, fsm_s::rdbuf, and fsm_s::rdnb.

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 31 of file cpio.c.

References alloca(), and strtoul.

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