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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"

Include dependency graph for cpio.c:

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 * cpioStrerror (int rc)
 Return formatted error message on payload handling failure.

Variables

int _cpio_debug = 0


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 56 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 61 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 148 of file cpio.c.

References _cpio_debug, _free(), CPIO_CRC_MAGIC, CPIO_NEWC_MAGIC, CPIOERR_BAD_HEADER, CPIOERR_BAD_MAGIC, CPIOERR_READ_FAILED, cpioCrcPhysicalHeader::devMajor, cpioCrcPhysicalHeader::devMinor, cpioCrcPhysicalHeader::filesize, FSM_DREAD, FSM_POS, fsmNext(), GET_NUM_FIELD, cpioCrcPhysicalHeader::gid, cpioCrcPhysicalHeader::inode, fsm_s::lpath, 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, S_ISLNK, cpioCrcPhysicalHeader::uid, fsm_s::wrbuf, fsm_s::wrlen, fsm_s::wrsize, xmalloc(), and xstrdup().

Referenced by fsmSetup().

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 95 of file cpio.c.

References _cpio_debug, cpioCrcPhysicalHeader::checksum, CPIO_NEWC_MAGIC, CPIOERR_WRITE_FAILED, cpioCrcPhysicalHeader::devMajor, cpioCrcPhysicalHeader::devMinor, cpioCrcPhysicalHeader::filesize, FSM_DWRITE, FSM_PAD, fsmNext(), cpioCrcPhysicalHeader::gid, cpioCrcPhysicalHeader::inode, fsm_s::lpath, 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, S_ISLNK, SET_NUM_FIELD, cpioCrcPhysicalHeader::uid, and fsm_s::wrnb.

Referenced by fsmSetup().

int cpioTrailerWrite FSM_t  fsm  ) 
 

Write cpio trailer.

Return values:
fsm file path and stat info
Returns:
0 on success

Definition at line 67 of file cpio.c.

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

Referenced by fsmSetup().

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 cpio.c.

References alloca().

Referenced by tarHeaderRead().


Variable Documentation

int _cpio_debug = 0
 

Definition at line 24 of file cpio.c.

Referenced by cpioHeaderRead(), and cpioHeaderWrite().


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