25.03.2012 21:53, Tim Kientzle пишет: > > On Mar 25, 2012, at 5:53 AM, Boris Samorodov wrote: > >> On 24.03.2012 21:00, Tim Kientzle wrote: >>> >>> On Mar 23, 2012, at 9:51 PM, Boris Samorodov wrote: >>> >>> Can you send me the output of: >>> >>> tar -cvf /tmp/test.tar >>> /usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1 >>> >>> (A tar archive containing only that one source file.) >>> >>> This looks similar to a bug that we found in libarchive recently >>> I didn't think that bug impacted FreeBSD, but I may have been >>> wrong…. if it did, it will be obvious from the structure of the >>> created archive. >> >> The following file is extracted after tarring: >> ----- >> % hd libnspr4.so.1 >> 00000000 32 0a 30 0a 30 0a 32 34 31 39 37 31 0a 30 0a 00 |2.0.0.241971.0..| >> 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| >> * >> 00000200 >> ----- >> >> The tar file itself attached (3KB in length). > > Ugh. I'll probably need your help to diagnose this more precisely. > > Here is the root problem: tar thinks this is a sparse file > with nothing in it. On FreeBSD, bsdtar now uses > lseek(SEEK_HOLE) to identify holes in the file. For > some reason, bsdtar is storing this file as just one big hole. > > There are a lot of things here that don't make sense: > > * The extracted file should be all zero bytes. (The 2.0.0.241971.0. is the > sparse file map, it's not really part of the file.) How are you extracting > this?
I used misc/mc to walk through the filesystem of the tar archive and then just copy <F5> the library to an existing file system. OK, you are right. Seems that mc has made a joke on me. When I extract the file at command line it consists of zeros: ----- % tar xvf /tmp/test.tar --strip-components 16 % ls -l total 1 -rwxr-xr-x 1 bsam wheel 241971 24 мар 08:48 libnspr4.so.1 % hd libnspr4.so.1 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 0003b130 ----- > * Can you run the tar command under truss or ktrace and look for calls to > lseek()? That would help verify that this is really a tar bug and not a > filesystem or kernel bug. Interesting... I'll create three tar archives (without truss, with truss and with kdump): ----- % ls -l /tmp/test/ total 0 % sudo tar -cvf /tmp/test/no-truss.tar /usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1 [...] % sudo truss tar -cvf /tmp/test/truss.tar /usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1 [...] % sudo ktrace tar -cvf /tmp/test/ktrace.tar /usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1 % ls -l /tmp/test total 248 -rw-r--r-- 1 root wheel 3072 25 мар 22:47 ktrace.tar -rw-r--r-- 1 root wheel 3072 25 мар 22:46 no-truss.tar -rw-r--r-- 1 root wheel 243712 25 мар 22:47 truss.tar ----- Seems that we get a good tar archive while using truss! Lets see what kdump says. The relevant last part is attached. > I'll spend some time today to see if I can reproduce the problem here. Thanks. Let me know if I can help you here. -- WBR, Boris Samorodov (bsam) FreeBSD Committer, http://www.FreeBSD.org The Power To Serve
4379 bsdtar GIO fd 5 read 537 bytes "# $FreeBSD: head/etc/group 218046 2011-01-28 22:28:12Z pjd $ # wheel:*:0:root daemon:*:1: kmem:*:2: sys:*:3: tty:*:4: operator:*:5:root,bsam" 4379 bsdtar RET read 537/0x219 4379 bsdtar CALL close(0x5) 4379 bsdtar RET close 0 4379 bsdtar CALL madvise(0x3414f000,0x8000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL __acl_get_link(0x34016100,ACL_TYPE_ACCESS,0x34148000) 4379 bsdtar NAMI "/usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1" 4379 bsdtar RET __acl_get_link -1 errno 22 Invalid argument 4379 bsdtar CALL extattr_list_link(0x34016100,0x1,0,0) 4379 bsdtar NAMI "/usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1" 4379 bsdtar RET extattr_list_link 0 4379 bsdtar CALL pathconf(0x34016100,0x15) 4379 bsdtar NAMI "/usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1" 4379 bsdtar RET pathconf 512/0x200 4379 bsdtar CALL open(0x34016100,0x4<O_NONBLOCK>,<unused>0) 4379 bsdtar NAMI "/usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1" 4379 bsdtar RET open 5 4379 bsdtar CALL lseek(0x5,0,SEEK_SET,0x3) 4379 bsdtar RET lseek 0 4379 bsdtar CALL lseek(0x5,0,SEEK_SET,0x4) 4379 bsdtar RET lseek 0 4379 bsdtar CALL lseek(0x5,0,SEEK_SET,0x3) 4379 bsdtar RET lseek -1 errno 6 Device not configured 4379 bsdtar CALL close(0x5) 4379 bsdtar RET close 0 4379 bsdtar CALL write(0x2,0x82bfe438,0x5) 4379 bsdtar GIO fd 2 wrote 5 bytes "tar: " 4379 bsdtar RET write 5 4379 bsdtar CALL write(0x2,0x82bfe438,0x26) 4379 bsdtar GIO fd 2 wrote 38 bytes "Removing leading '/' from member names" 4379 bsdtar RET write 38/0x26 4379 bsdtar CALL write(0x2,0x33fce04f,0x1) 4379 bsdtar GIO fd 2 wrote 1 byte " " 4379 bsdtar RET write 1 4379 bsdtar CALL write(0x2,0x82bfe6f8,0x60) 4379 bsdtar GIO fd 2 wrote 96 bytes "a usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr\ 4.so.1" 4379 bsdtar RET write 96/0x60 4379 bsdtar CALL open(0x34016100,0<O_RDONLY>,<unused>0x33cdf550) 4379 bsdtar NAMI "/usr/ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./libnspr4.so.1" 4379 bsdtar RET open 5 4379 bsdtar CALL read(0x5,0x3403b000,0x14000) 4379 bsdtar GIO fd 5 read 4096 bytes 0x0000 7f45 4c46 0101 0109 0000 0000 0000 0000 0300 0300 0100 |.ELF..................| 0x0016 0000 208a 0000 3400 0000 480b 0300 0000 0000 3400 2000 |.. ...4...H.......4. .| 0x002c 0400 2800 1b00 1800 0100 0000 0000 0000 0000 0000 0000 |..(...................| 0x0042 0000 98e9 0200 98e9 0200 0500 0000 0010 0000 0100 0000 |......................| 0x0058 00f0 0200 00f0 0200 00f0 0200 1010 0000 6827 0000 0600 |................h'....| 0x006e 0000 0010 0000 0200 0000 90f3 0200 90f3 0200 90f3 0200 |......................| 0x0084 d000 0000 d000 0000 |........| 4379 bsdtar RET read 81920/0x14000 4379 bsdtar CALL read(0x5,0x3403b000,0x14000) 4379 bsdtar GIO fd 5 read 4096 bytes 0x0000 e820 50ff ff81 c34b b501 0083 e003 0f85 7e00 0000 c1fe |. P....K........~.....| 0x0016 0285 f689 75f0 7443 8bbb 5020 0000 85ff 0f84 7f00 0000 |....u.tC..P ..........| 0x002c f645 f001 7513 d17d f074 2a8b 3785 f674 2f89 f7f6 45f0 |.E..u..}.t*.7..t/...E.| 0x0042 0174 ed8b 45ec 89fa e851 fbff ff89 c68b 45ec e847 fdff |.t..E....Q......E..G..| 0x0058 ffd1 7df0 8975 ec75 d68b 45ec 83c4 0c5b 5e5f 5dc3 8b83 |..}..u.u..E....[^_]...| 0x006e 1417 0000 8904 24e8 1a3f ffff 8b37 85f6 7456 8b83 1417 |......$..?...7..tV....| 0x0084 0000 89f7 8904 24e8 |......$.| 4379 bsdtar RET read 81920/0x14000 4379 bsdtar CALL read(0x5,0x3403b000,0x14000) 4379 bsdtar GIO fd 5 read 4096 bytes 0x0000 897c 2404 8904 24ff 93b4 0a00 0085 c089 c678 228b 4d0c |.|$...$..........x".M.| 0x0016 85c9 740c 8b55 0c89 f8e8 7cf4 ffff 89c6 89f0 8b5d f48b |..t..U....|........]..| 0x002c 75f8 8b7d fc89 ec5d c3e8 fa02 feff 8b00 8904 24e8 3c0d |u..}...]..........$.<.| 0x0042 0000 ebe0 8d76 008d bc27 0000 0000 5589 e583 ec78 895d |.....v...'....U....x.]| 0x0058 f48b 4508 e8c4 0ffe ff81 c3ef 7400 0089 7dfc 8d7d 9489 |..E.........t...}..}..| 0x006e 75f8 897c 2404 8904 24e8 f8fb fdff 85c0 89c6 7822 8b45 |u..|$...$.........x".E| 0x0084 0c85 c074 0c8b 550c |...t..U.| 4379 bsdtar RET read 78131/0x13133 4379 bsdtar CALL read(0x5,0x3403b000,0x14000) 4379 bsdtar GIO fd 5 read 0 bytes "" 4379 bsdtar RET read 0 4379 bsdtar CALL close(0x5) 4379 bsdtar RET close 0 4379 bsdtar CALL write(0x2,0x33fce04f,0x1) 4379 bsdtar GIO fd 2 wrote 1 byte " " 4379 bsdtar RET write 1 4379 bsdtar CALL fchdir(0x4) 4379 bsdtar RET fchdir 0 4379 bsdtar CALL close(0x4) 4379 bsdtar RET close 0 4379 bsdtar CALL write(0x3,0x340a9800,0xc00) 4379 bsdtar GIO fd 3 wrote 3072 bytes "ports/devel/nspr/work/nspr-4.9/mozilla/nsprpub/build/dist/lib/../../pr/src/./PaxHeader/lib\ nspr4.so.1000755 \000000000 \000000000 \00000000000427 1173" 4379 bsdtar RET write 3072/0xc00 4379 bsdtar CALL close(0x3) 4379 bsdtar RET close 0 4379 bsdtar CALL madvise(0x340ef000,0x2000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x340a9000,0x3000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x340a7000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x3403b000,0x14000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x340ed000,0x2000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x34060000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x34050000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x34147000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x3404f000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x3402c000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x341a7000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x34016000,0x1000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL madvise(0x34012000,0x3000,MADV_FREE) 4379 bsdtar RET madvise 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfea68) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_BLOCK,0x33c6c270,0x82bfe1e8) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL sigprocmask(SIG_SETMASK,0x33c6c284,0) 4379 bsdtar RET sigprocmask 0 4379 bsdtar CALL exit(0)
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