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.


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.


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().


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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