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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<config.h>
	15
	16	#include <apt-pkg/dirstream.h>
	17	#include <apt-pkg/error.h>
	18
	19	#include <fcntl.h>
	20	#include <sys/stat.h>
	21	#include <sys/time.h>
	22	#include <errno.h>
	23	#include <unistd.h>
	24	#include <apti18n.h>
	25	/}}}/
	26
	27	// DirStream::DoItem - Process an item /{{{/
	28	// ---------------------------------------------------------------------
	29	/* This is a very simple extractor, it does not deal with things like
	30	overwriting directories with files and so on. */
	31	bool pkgDirStream::DoItem(Item &Itm,int &Fd)
	32	{
	33	switch (Itm.Type)
	34	{
	35	case Item::File:
	36	{
	37	/* Open the output file, NDELAY is used to prevent this from
	38	blowing up on device special files.. */
	39	int iFd = open(Itm.Name,O_NDELAY\|O_WRONLY\|O_CREAT\|O_TRUNC\|O_APPEND,
	40	Itm.Mode);
	41	if (iFd < 0)
	42	return _error->Errno("open",_("Failed to write file %s"),
	43	Itm.Name);
	44
	45	// fchmod deals with umask and fchown sets the ownership
	46	if (fchmod(iFd,Itm.Mode) != 0)
	47	{
	48	close(iFd);
	49	return _error->Errno("fchmod",_("Failed to write file %s"), Itm.Name);
	50	}
	51	if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM)
	52	{
	53	close(iFd);
	54	return _error->Errno("fchown",_("Failed to write file %s"), Itm.Name);
	55	}
	56	Fd = iFd;
	57	return true;
	58	}
	59
	60	case Item::HardLink:
	61	case Item::SymbolicLink:
	62	case Item::CharDevice:
	63	case Item::BlockDevice:
	64	case Item::Directory:
	65	{
	66	struct stat Buf;
	67	// check if the dir is already there, if so return true
	68	if (stat(Itm.Name,&Buf) == 0)
	69	{
	70	if(S_ISDIR(Buf.st_mode))
	71	return true;
	72	// something else is there already, return false
	73	return false;
	74	}
	75	// nothing here, create the dir
	76	if(mkdir(Itm.Name,Itm.Mode) < 0)
	77	return false;
	78	return true;
	79	break;
	80	}
	81	case Item::FIFO:
	82	break;
	83	}
	84
	85	return true;
	86	}
	87	/}}}/
	88	// DirStream::FinishedFile - Finished processing a file /{{{/
	89	// ---------------------------------------------------------------------
	90	/* */
	91	bool pkgDirStream::FinishedFile(Item &Itm,int Fd)
	92	{
	93	if (Fd < 0)
	94	return true;
	95
	96	/* Set the modification times. The only way it can fail is if someone
	97	has futzed with our file, which is intolerable :> */
	98	struct timeval times[2];
	99	times[0].tv_sec = times[1].tv_sec = Itm.MTime;
	100	times[0].tv_usec = times[1].tv_usec = 0;
	101	if (utimes(Itm.Name, times) != 0)
	102	_error->Errno("utimes", "Failed to set modification time for %s",Itm.Name);
	103
	104	if (close(Fd) != 0)
	105	return _error->Errno("close",_("Failed to close file %s"),Itm.Name);
	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	/}}}/