git.saurik.com Git - apt-legacy.git/blame_incremental

... / ...

Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: dirstream.cc,v 1.3.2.1 2004/01/16 18:58:50 mdz Exp $
	4	/* ######################################################################
	5
	6	Directory Stream
	7
	8	This class provides a simple basic extractor that can be used for
	9	a number of purposes.
	10
	11	##################################################################### */
	12	/}}}/
	13	// Include Files /{{{/
	14	#ifdef __GNUG__
	15	#pragma implementation "apt-pkg/dirstream.h"
	16	#endif
	17
	18	#include <apt-pkg/dirstream.h>
	19	#include <apt-pkg/error.h>
	20
	21	#include <fcntl.h>
	22	#include <sys/stat.h>
	23	#include <sys/types.h>
	24	#include <errno.h>
	25	#include <utime.h>
	26	#include <unistd.h>
	27	#include <apti18n.h>
	28	/}}}/
	29
	30	// DirStream::DoItem - Process an item /{{{/
	31	// ---------------------------------------------------------------------
	32	/* This is a very simple extractor, it does not deal with things like
	33	overwriting directories with files and so on. */
	34	bool pkgDirStream::DoItem(Item &Itm,int &Fd)
	35	{
	36	switch (Itm.Type)
	37	{
	38	case Item::File:
	39	{
	40	/* Open the output file, NDELAY is used to prevent this from
	41	blowing up on device special files.. */
	42	int iFd = open(Itm.Name,O_NDELAY\|O_WRONLY\|O_CREAT\|O_TRUNC\|O_APPEND,
	43	Itm.Mode);
	44	if (iFd < 0)
	45	return _error->Errno("open",_("Failed to write file %s"),
	46	Itm.Name);
	47
	48	// fchmod deals with umask and fchown sets the ownership
	49	if (fchmod(iFd,Itm.Mode) != 0)
	50	return _error->Errno("fchmod",_("Failed to write file %s"),
	51	Itm.Name);
	52	if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM)
	53	return _error->Errno("fchown",_("Failed to write file %s"),
	54	Itm.Name);
	55	Fd = iFd;
	56	return true;
	57	}
	58
	59	case Item::HardLink:
	60	case Item::SymbolicLink:
	61	case Item::CharDevice:
	62	case Item::BlockDevice:
	63	case Item::Directory:
	64	{
	65	struct stat Buf;
	66	// check if the dir is already there, if so return true
	67	if (stat(Itm.Name,&Buf) == 0)
	68	{
	69	if(S_ISDIR(Buf.st_mode))
	70	return true;
	71	// something else is there already, return false
	72	return false;
	73	}
	74	// nothing here, create the dir
	75	if(mkdir(Itm.Name,Itm.Mode) < 0)
	76	return false;
	77	return true;
	78	break;
	79	}
	80	case Item::FIFO:
	81	break;
	82	}
	83
	84	return true;
	85	}
	86	/}}}/
	87	// DirStream::FinishedFile - Finished processing a file /{{{/
	88	// ---------------------------------------------------------------------
	89	/* */
	90	bool pkgDirStream::FinishedFile(Item &Itm,int Fd)
	91	{
	92	if (Fd < 0)
	93	return true;
	94
	95	if (close(Fd) != 0)
	96	return _error->Errno("close",_("Failed to close file %s"),Itm.Name);
	97
	98	/* Set the modification times. The only way it can fail is if someone
	99	has futzed with our file, which is intolerable :> */
	100	struct utimbuf Time;
	101	Time.actime = Itm.MTime;
	102	Time.modtime = Itm.MTime;
	103	if (utime(Itm.Name,&Time) != 0)
	104	_error->Errno("utime",_("Failed to close file %s"),Itm.Name);
	105
	106	return true;
	107	}
	108	/}}}/
	109	// DirStream::Fail - Failed processing a file /{{{/
	110	// ---------------------------------------------------------------------
	111	/* */
	112	bool pkgDirStream::Fail(Item &Itm,int Fd)
	113	{
	114	if (Fd < 0)
	115	return true;
	116
	117	close(Fd);
	118	return false;
	119	}
	120	/}}}/