0000640: tar fails to extract correctly 100 chars path files

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000640

[BusyBox] Other

minor

always

01-13-06 06:01

02-20-06 11:29

Reporter

grap

View Status

public

Assigned To

BusyBox

Priority

normal

Resolution

fixed

Status

closed

Product Version

1.01

Summary

0000640: tar fails to extract correctly 100 chars path files

Description

When a file in a tar archive has a path of exactly 100 characters, the busybox tar extracts it with a wrong name. It adds at the end of the file name the file mode.
For example, with a file :
./home/grap/...fillmeto100chars....txt
It reads it like :
$ tar -tf myarchive.tar
./home/grap/...fillmeto100chars....txt0000644
and it does the same with a tar -xf.
The reason is that in a tar archive, when the path does exactly 100 characters, there is no '\0' character separating it from the mode. In busybox, tar proceeds with a strdup so it takes the whole string to the first '\0', wich explains that with a 100 chars path file it takes the mode with the file name.
The following patch fixes this bug by first using a temporary string obtained by a strndup(..., 100):
[url]http://opensource.synerway.com/patchs/busybox-1.01-100_chars_tar_bug_fix.patch[/url] [^]

Additional Information

Attached Files

Relationships

Notes
(0000931) grap 01-13-06 06:15	Let's retype the patch url: http://opensource.synerway.com/patchs/busybox-1.01-100_chars_tar_bug_fix.patch [^]

(0001125) landley 02-20-06 11:29	svn 14150

Issue History
Date Modified	Username	Field	Change
01-13-06 06:01	grap	New Issue
01-13-06 06:01	grap	Status	new => assigned
01-13-06 06:01	grap	Assigned To	=> BusyBox
01-13-06 06:10	grap	Issue Monitored: grap
01-13-06 06:15	grap	Note Added: 0000931
02-20-06 11:29	landley	Status	assigned => closed
02-20-06 11:29	landley	Note Added: 0001125
02-20-06 11:29	landley	Resolution	open => fixed