On Thu, Feb 23, 2012 at 8:55 AM, Natanael Copa <[email protected]> wrote: > Hi, > > I have an issue with busybox tar that does not happen with gnu tar: > > $ wget > http://downloads.sourceforge.net/sourceforge/inkscape/inkscape-0.48.3.1.tar.gz > ... > $ md5sum inkscape-0.48.3.1.tar.gz > ccf8ccd9e66199badb8c35ea3851a888 inkscape-0.48.3.1.tar.gz > $ tar -ztf inkscape-0.48.3.1.tar.gz > ... > tar: warning: skipping header 'x' > inkscape-0.48.3.1/packaging/macosx/Resources/themes/Clearlooks-Quicksilver-OSX/gtk-2.0/Scrollbars_1/ > tar: warning: skipping header 'x' > inkscape-0.48.3.1/packaging/macosx/Resources/themes/Clearlooks-Quicksilver-OSX/gtk-2.0/Scrollbars_1/ > tar: invalid tar magic > $ echo $? > 1 > > with gnu tar I get: > ... > inkscape-0.48.3.1/README.sk.txt > inkscape-0.48.3.1/INSTALL > inkscape-0.48.3.1/inkscape.spec > $ echo $? > 0
Looks like we don't support PAX headers which specify the long name (we support a different (GNU, not PAX) extension for that): 0497b600 69 6e 6b 73 63 61 70 65 2d 30 2e 34 38 2e 33 2e |inkscape-0.48.3.| 0497b610 31 2f 70 61 63 6b 61 67 69 6e 67 2f 6d 61 63 6f |1/packaging/maco| 0497b620 73 78 2f 52 65 73 6f 75 72 63 65 73 2f 74 68 65 |sx/Resources/the| 0497b630 6d 65 73 2f 43 6c 65 61 72 6c 6f 6f 6b 73 2d 51 |mes/Clearlooks-Q| 0497b640 75 69 63 6b 73 69 6c 76 65 72 2d 4f 53 58 2f 67 |uicksilver-OSX/g| 0497b650 74 6b 2d 32 2e 30 2f 53 63 72 6f 6c 6c 62 61 72 |tk-2.0/Scrollbar| 0497b660 73 5f 31 2f 30 30 30 30 36 34 34 00 30 30 30 31 |s_1/0000644.0001| 0497b670 37 35 30 00 30 30 30 31 37 35 30 00 30 30 30 30 |750.0001750.0000| 0497b680 30 30 30 30 33 32 34 00 31 31 36 30 35 36 34 35 |0000324.11605645| 0497b690 36 30 35 00 30 33 31 32 33 34 00 20 78 00 00 00 |605.031234. x...| 0497b6a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497b700 00 75 73 74 61 72 00 30 30 00 00 00 00 00 00 00 |.ustar.00.......| 0497b710 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497b740 00 00 00 00 00 00 00 00 00 30 30 30 30 30 30 30 |.........0000000| 0497b750 00 30 30 30 30 30 30 30 00 00 00 00 00 00 00 00 |.0000000........| 0497b760 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497b800 31 32 36 20 70 61 74 68 3d 69 6e 6b 73 63 61 70 |126 path=inkscap| 0497b810 65 2d 30 2e 34 38 2e 33 2e 31 2f 70 61 63 6b 61 |e-0.48.3.1/packa| 0497b820 67 69 6e 67 2f 6d 61 63 6f 73 78 2f 52 65 73 6f |ging/macosx/Reso| 0497b830 75 72 63 65 73 2f 74 68 65 6d 65 73 2f 43 6c 65 |urces/themes/Cle| 0497b840 61 72 6c 6f 6f 6b 73 2d 51 75 69 63 6b 73 69 6c |arlooks-Quicksil| 0497b850 76 65 72 2d 4f 53 58 2f 67 74 6b 2d 32 2e 30 2f |ver-OSX/gtk-2.0/| 0497b860 53 63 72 6f 6c 6c 62 61 72 73 5f 31 2f 73 6c 69 |Scrollbars_1/sli| 0497b870 64 65 72 2d 68 6f 72 69 7a 2e 70 6e 67 0a 32 36 |der-horiz.png.26| 0497b880 20 6d 74 69 6d 65 3d 31 33 31 30 31 34 39 35 30 | mtime=131014950| 0497b890 39 2e 34 36 38 37 39 0a 33 30 20 61 74 69 6d 65 |9.46879.30 atime| 0497b8a0 3d 31 33 32 39 36 31 35 37 39 39 2e 31 33 33 35 |=1329615799.1335| 0497b8b0 37 34 35 39 39 0a 33 30 20 63 74 69 6d 65 3d 31 |74599.30 ctime=1| 0497b8c0 33 32 39 36 31 35 38 34 35 2e 36 31 30 37 30 38 |329615845.610708| 0497b8d0 38 32 39 0a 00 00 00 00 00 00 00 00 00 00 00 00 |829.............| 0497b8e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497ba00 69 6e 6b 73 63 61 70 65 2d 30 2e 34 38 2e 33 2e |inkscape-0.48.3.| 0497ba10 31 2f 70 61 63 6b 61 67 69 6e 67 2f 6d 61 63 6f |1/packaging/maco| 0497ba20 73 78 2f 52 65 73 6f 75 72 63 65 73 2f 74 68 65 |sx/Resources/the| 0497ba30 6d 65 73 2f 43 6c 65 61 72 6c 6f 6f 6b 73 2d 51 |mes/Clearlooks-Q| 0497ba40 75 69 63 6b 73 69 6c 76 65 72 2d 4f 53 58 2f 67 |uicksilver-OSX/g| 0497ba50 74 6b 2d 32 2e 30 2f 53 63 72 6f 6c 6c 62 61 72 |tk-2.0/Scrollbar| 0497ba60 73 5f 31 2f 30 30 30 30 36 36 34 00 30 30 30 31 |s_1/0000664.0001| 0497ba70 37 35 30 00 30 30 30 31 37 35 30 00 30 30 30 30 |750.0001750.0000| 0497ba80 30 30 31 33 34 36 34 00 31 31 36 30 35 36 34 35 |0013464.11605645| 0497ba90 36 30 35 00 30 33 32 33 33 31 00 20 30 00 00 00 |605.032331. 0...| 0497baa0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497bb00 00 75 73 74 61 72 00 30 30 74 65 64 00 00 00 00 |.ustar.00ted....| 0497bb10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 0497bb20 00 00 00 00 00 00 00 00 00 74 65 64 00 00 00 00 |.........ted....| 0497bb30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 0497bb40 00 00 00 00 00 00 00 00 00 30 30 30 30 30 30 30 |.........0000000| 0497bb50 00 30 30 30 30 30 30 30 00 00 00 00 00 00 00 00 |.0000000........| 0497bb60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0497bc00 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 |.PNG........IHDR| 0497bc10 00 00 00 26 00 00 00 0f 10 06 00 00 00 d8 0e 61 |...&...........a| 0497bc20 13 00 00 0f 4d 69 43 43 50 69 63 63 00 00 78 da |....MiCCPicc..x.| ... strace shows that tar reads the first 512 blocks of png file and tries to interpret it as tar header. Apparently, it is tricked by the coincidence that truncated name ends in '/': "...Scrollbars_1/" which triggers a old-gnu heuristic that its a directory, which in turn makes tar ignore the size field (0013464), which in turn makes it interpret next block as a tar block, not data block. We need to teach tar to understand PAX 'x' block with "path=PATH" to fix this. -- vda _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
