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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	#include <apt-pkg/dirstream.h>
	15	#include <apt-pkg/error.h>
	16
	17	#include <fcntl.h>
	18	#include <sys/stat.h>
	19	#include <sys/types.h>
	20	#include <errno.h>
	21	#include <utime.h>
	22	#include <unistd.h>
	23	#include <apti18n.h>
	24	/}}}/
	25
	26	// DirStream::DoItem - Process an item /{{{/
	27	// ---------------------------------------------------------------------
	28	/* This is a very simple extractor, it does not deal with things like
	29	overwriting directories with files and so on. */
	30	bool pkgDirStream::DoItem(Item &Itm,int &Fd)
	31	{
	32	switch (Itm.Type)
	33	{
	34	case Item::File:
	35	{
	36	/* Open the output file, NDELAY is used to prevent this from
	37	blowing up on device special files.. */
	38	int iFd = open(Itm.Name,O_NDELAY\|O_WRONLY\|O_CREAT\|O_TRUNC\|O_APPEND,
	39	Itm.Mode);
	40	if (iFd < 0)
	41	return _error->Errno("open",_("Failed to write file %s"),
	42	Itm.Name);
	43
	44	// fchmod deals with umask and fchown sets the ownership
	45	if (fchmod(iFd,Itm.Mode) != 0)
	46	{
	47	_error->Errno("fchmod",_("Failed to write file %s"), Itm.Name);
	48	close(iFd);
	49	return false;
	50	}
	51	if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM)
	52	{
	53	return _error->Errno("fchown",_("Failed to write file %s"), Itm.Name);
	54	close(iFd);
	55	return false;
	56	}
	57	Fd = iFd;
	58	return true;
	59	}
	60
	61	case Item::HardLink:
	62	case Item::SymbolicLink:
	63	case Item::CharDevice:
	64	case Item::BlockDevice:
	65	case Item::Directory:
	66	{
	67	struct stat Buf;
	68	// check if the dir is already there, if so return true
	69	if (stat(Itm.Name,&Buf) == 0)
	70	{
	71	if(S_ISDIR(Buf.st_mode))
	72	return true;
	73	// something else is there already, return false
	74	return false;
	75	}
	76	// nothing here, create the dir
	77	if(mkdir(Itm.Name,Itm.Mode) < 0)
	78	return false;
	79	return true;
	80	break;
	81	}
	82	case Item::FIFO:
	83	break;
	84	}
	85
	86	return true;
	87	}
	88	/}}}/
	89	// DirStream::FinishedFile - Finished processing a file /{{{/
	90	// ---------------------------------------------------------------------
	91	/* */
	92	bool pkgDirStream::FinishedFile(Item &Itm,int Fd)
	93	{
	94	if (Fd < 0)
	95	return true;
	96
	97	if (close(Fd) != 0)
	98	return _error->Errno("close",_("Failed to close file %s"),Itm.Name);
	99
	100	/* Set the modification times. The only way it can fail is if someone
	101	has futzed with our file, which is intolerable :> */
	102	struct utimbuf Time;
	103	Time.actime = Itm.MTime;
	104	Time.modtime = Itm.MTime;
	105	if (utime(Itm.Name,&Time) != 0)
	106	_error->Errno("utime",_("Failed to close file %s"),Itm.Name);
	107
	108	return true;
	109	}
	110	/}}}/
	111	// DirStream::Fail - Failed processing a file /{{{/
	112	// ---------------------------------------------------------------------
	113	/* */
	114	bool pkgDirStream::Fail(Item &Itm,int Fd)
	115	{
	116	if (Fd < 0)
	117	return true;
	118
	119	close(Fd);
	120	return false;
	121	}
	122	/}}}/