1. 03 Jan, 2020 3 commits
    • Jakob Unterwurzacher's avatar
      loopback: preserve owner when running as root · 493adfb7
      Jakob Unterwurzacher authored
      If we are running as root have caller information from
      the context, try to set the owner of newly created files
      and directories.
      
      Lays the foundation for fixing xfstests generic/087
      (xfstests always run as root).
      
      Change-Id: Ib8d768153f3ec82ce572021a433a6398560efd44
      493adfb7
    • Jakob Unterwurzacher's avatar
      tests: posixtest: add FstatDeleted · 037efc7d
      Jakob Unterwurzacher authored
      Excercises the fd-finding logic in rawBridge.GetAttr.
      No issues found, tests pass, logic works fine.
      
      Change-Id: I49731b8ec5b41344d58409c8ca615f466bd95f29
      037efc7d
    • Jakob Unterwurzacher's avatar
      loopback: use Lgetxattr and friends · f28fbbf1
      Jakob Unterwurzacher authored
      Stop following symlinks when working with extended
      attributes, and add a test for it.
      
      Problem found by xfstests generic/062.
      
      Change-Id: I67f94451322cdfebdcbcc3af21679ccd4e2800d7
      f28fbbf1
  2. 19 Dec, 2019 2 commits
  3. 11 Dec, 2019 2 commits
  4. 10 Dec, 2019 2 commits
  5. 09 Dec, 2019 3 commits
    • Han-Wen Nienhuys's avatar
      fs: don't enforce dirent ordering. · be93dbf7
      Han-Wen Nienhuys authored
      In TestBridgeReaddirPlusVirtualEntries we test that "." comes first,
      and then "..". This ordering is not reliable. On
      4.19.67-2rodete2-amd64, I see ".." before "."
      
      Adapt the test to accept either ordering.
      
      Change-Id: Ifc003dca6c2b19d9df3045ac30569ee27f78fc52
      be93dbf7
    • Han-Wen Nienhuys's avatar
      internal: skip test with other group if user is only 1 group · d4b28605
      Han-Wen Nienhuys authored
      Change-Id: I59a1f187ff4c88bcefdb1e70c6461ca4b2a79c3b
      d4b28605
    • Jakob Unterwurzacher's avatar
      tests: fix TestReaddirTypeFixup leaking broken mounts · 672815b2
      Jakob Unterwurzacher authored
      After running the test suite, `df` used to report this:
      
        df: /tmp/TestReaddirTypeFixup090721515: Transport endpoint is not connected
      
      To catch problems like this earlier, testMount() now reports failures to umount
      cleanly, and catches the problem with TestReaddirTypeFixup:
      
        $ go test ./fs -run TestReaddirTypeFixup
        [...]
            mem_test.go:37: testMount: Unmount failed: /usr/bin/fusermount: failed to unmount /tmp/TestReaddirTypeFixup175482633: Device or resource busy
      
      TestReaddirTypeFixup was missing ds.Close(), which was also added,
      tests pass now and don't leave broken mounts behind.
      
      Change-Id: Ib5d96c8531b11080cf8da526b917446388537956
      672815b2
  6. 08 Dec, 2019 1 commit
    • Jakob Unterwurzacher's avatar
      tests: add OpenAt test · 6ae4ba6c
      Jakob Unterwurzacher authored
      Tests that openat(2) works as expected when the parent
      directory is renamed (it does).
      
      Originally written to get a FUSE log about what happens
      when userspace calls openat, but it might make sense to
      just keep it as a test.
      
      Change-Id: I3fac815a7c0f713b4f859f6876d60380df9bc953
      6ae4ba6c
  7. 04 Dec, 2019 1 commit
    • Jakob Unterwurzacher's avatar
      tests: make TestTypeChange robust against outside interference · da5ff9a7
      Jakob Unterwurzacher authored
      I have suddenly seen TestTypeChange hang forever, waiting for the
      FORGET that never arrives. The first concern was that the assumption
      that the FORGET always follows the delete was wrong. Checking the
      kernel source code, the FORGET should really, actually always follow
      the delete.
      
      Looking more closely on the debug trace showed this:
      
              LOOKUP i1 [".Trash-1026"] 12b
                   OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      
      This is the desktop environment looking for the trash folder.
      And because the test is stupid, it returned the same dummy
      inode i1234. This means the kernel had one extra reference
      to this inode and, of course, did not send a FORGET when
      "file" was deleted.
      
      I made testTypeChangeIno only react to expected file names
      now, and added a log output should we wait more than ~5
      seconds for the FORGET. The log message then repeats indefinitely
      every 5 seconds.
      
              ~/go/src/github.com/hanwen/go-fuse/fs$ go test -v -run TestTypeChange
              === RUN   TestTypeChange
              20:50:18.491584 rx 2: INIT i0 {7.31 Ra 0x20000 CACHE_SYMLINKS,POSIX_LOCKS,SPLICE_MOVE,SPLICE_READ,READDIRPLUS,READDIRPLUS_AUTO,PARALLEL_DIROPS,ABORT_ERROR,EXPLICIT_INVAL_DATA,ASYNC_READ,EXPORT_SUPPORT,DONT_MASK,NO_OPENDIR_SUPPORT,SPLICE_WRITE,FLOCK_LOCKS,AUTO_INVAL_DATA,HANDLE_KILLPRIV,MAX_PAGES,POSIX_ACL,ATOMIC_O_TRUNC,BIG_WRITES,IOCTL_DIR,ASYNC_DIO,WRITEBACK_CACHE,NO_OPEN_SUPPORT}
              20:50:18.491728 tx 2:     OK, {7.28 Ra 0x20000 NO_OPEN_SUPPORT,BIG_WRITES,PARALLEL_DIROPS,READDIRPLUS,ASYNC_READ,AUTO_INVAL_DATA 0/0 Wr 0x10000 Tg 0x0}
              20:50:18.491857 rx 4: ACCESS i1 {u=1026 g=1026 r}
              20:50:18.491873 tx 4:     OK
              20:50:18.492028 rx 6: LOOKUP i1 [".go-fuse-epoll-hack"] 20b
              20:50:18.492110 tx 6:     2=no such file or directory, {i0 g0 tE=0s tA=0s {M00 SZ=0 L=0 0:0 B0*0 i0:0 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492147 rx 8: CREATE i1 {0100100 [TRUNC,WRONLY,CREAT,0x8000] (00)} [".go-fuse-epoll-hack"] 20b
              20:50:18.492207 tx 8:     OK, {i18446744073709551615 g0 {M0100644 SZ=0 L=1 0:0 B0*0 i0:18446744073709551615 A 0.000000 M 0.000000 C 0.000000} &{18446744073709551615 0 0}}
              20:50:18.492291 rx 10: LOOKUP i1 [".Trash"] 7b
              20:50:18.492340 tx 10:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492354 rx 12: POLL i18446744073709551615
              20:50:18.492359 tx 12:     38=function not implemented
              20:50:18.492370 rx 14: LOOKUP i1 [".go-fuse-epoll-hack"] 20b
              20:50:18.492378 tx 14:     2=no such file or directory, {i0 g0 tE=0s tA=0s {M00 SZ=0 L=0 0:0 B0*0 i0:0 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492389 rx 16: GETATTR i1234 {Fh 0}
              20:50:18.492398 tx 16:     OK, {tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492412 rx 18: FLUSH i18446744073709551615 {Fh 18446744073709551615}
              20:50:18.492417 tx 18:     5=input/output error
              20:50:18.492427 rx 20: LOOKUP i1 [".go-fuse-epoll-hack"] 20b
              20:50:18.492435 tx 20:     2=no such file or directory, {i0 g0 tE=0s tA=0s {M00 SZ=0 L=0 0:0 B0*0 i0:0 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492450 rx 22: RELEASE i18446744073709551615 {Fh 18446744073709551615 WRONLY,0x8000  L0}
              20:50:18.492456 tx 22:     5=input/output error
              20:50:18.492469 rx 24: LOOKUP i1 ["file"] 5b
              20:50:18.492477 tx 24:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492489 rx 26: LOOKUP i1 [".Trash-1026"] 12b
              20:50:18.492497 tx 26:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492506 rx 28: GETATTR i1234 {Fh 0}
              20:50:18.492513 tx 28:     OK, {tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492521 rx 30: GETATTR i1234 {Fh 0}
              20:50:18.492528 tx 30:     OK, {tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492537 rx 32: LOOKUP i1 ["file"] 5b
              20:50:18.492545 tx 32:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
              20:50:18.492555 rx 34: FORGET i18446744073709551615 {Nlookup=1}
              20:50:18.492575 rx 36: UNLINK i1 ["file"] 5b
              20:50:18.492588 tx 36:     OK
              20:50:18.492621 rx 38: LOOKUP i1 ["dir"] 4b
              [hangs here]
      
      Change-Id: Ibee48faf09c5a8993dfc7bb75251551f699cd63e
      da5ff9a7
  8. 03 Dec, 2019 2 commits
    • Han-Wen Nienhuys's avatar
      fs: introduce ServerCallbacks · 0ff7c8ac
      Han-Wen Nienhuys authored
      Options.ServerCallbacks can set the callbacks used when not mounting
      the filesystem.
      
      Change-Id: I51bf875a816c23e587ec8b575110221bdfcdaffe
      0ff7c8ac
    • Han-Wen Nienhuys's avatar
      fs: use syscall.Rename rather than os.Rename · 1e5729e0
      Han-Wen Nienhuys authored
      This provides more fidelity for reproducing file system behavior. Case
      in point, it lets us rename a directory on top of an existing
      directory
      
      Fixes #55.
      
      Change-Id: I82572aae32ee225b1629303c448a09f1066eb4ed
      1e5729e0
  9. 26 Nov, 2019 2 commits
  10. 25 Nov, 2019 6 commits
    • Jakob Unterwurzacher's avatar
      fs: wait out apparent inode type change · 7090b027
      Jakob Unterwurzacher authored
      When a inode is deleted and recreated, the inode number may
      be reused, and it may appear that it has changed type.
      
      A simple solution is to wait for the FORGET that *always*
      follows the deletion. This is what this patch does.
      
      Makes fsstress happy (tested with fsstress-loopback.bash from
      gocryptfs, which is similar to xfstests generic/013).
      
      Also fixes the test that was introduced in the last commit
      (TestTypeChange).
      
      fsstress-loopback.bash before:
      
          ~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$ ./fsstress-loopback.bash
          Recompile go-fuse loopback
          Waiting for mount:  ok
          Starting fsstress loop
          1
              fsstress.1 seed = 1572931176
              fsstress.2 seed = 1572919573
              fsstress.3 seed = 1573005097
              rm
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.2/p4/d1XXXX': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.2/p6/d0/d44XXXXXXXXXXXX/d4cXXXX': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p1/d11/d124/d12f/d154/d15a/d143/df1/d100/d135/d123/d3a': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p1/d11/f22': Not a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p3/d0/d7e/d4b/d102/d157/d134/d12f/d14b/d17a/d130': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p3/d0/d7e/d4b/d102/d157/d158/df2/ff5': Not a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p3/d0/d1c': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p0/d0/d4': Is a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p2/d6/dfd/da6/df2/d124/dea/d100/d120/d131/d13e/d13b/d149/d13a/f9c': Not a directory
          rm: cannot remove '/var/tmp/fsstress-loopback.bash.qgK.mnt/fsstress.3/p2/d6/dfd/da6/df2/d124/dea/dd5/dfa/d127/d129/d14a/d117/d14c/d82': Is a directory
          ./fsstress-loopback.bash: line 1: kill: %1: no such job
      
      After (with typechangeDebug = true):
      
          $ ./fsstress-loopback.bash
          Recompile go-fuse loopback
          Waiting for mount:  ok
          Starting fsstress loop
          1
              fsstress.1 seed = 1574198874
              fsstress.2 seed = 1574016238
          17:51:25.770396 Ino:13634604 typechange 0x8000 -> 0xa000, sleep=0s
          17:51:25.890382 Ino:13899580 typechange 0xa000 -> 0x8000, sleep=0s
          17:51:25.890400 Ino:13899580 typechange 0xa000 -> 0x8000, sleep=1µs
          17:51:25.890412 Ino:13899580 typechange 0xa000 -> 0x8000, sleep=1.41µs
              fsstress.3 seed = 1574847533
          17:51:27.472057 Ino:14158985 typechange 0x4000 -> 0x8000, sleep=0s
          17:51:27.472070 Ino:14158985 typechange 0x4000 -> 0x8000, sleep=1µs
          17:51:27.472304 Ino:14158985 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:27.478628 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:27.478640 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=1µs
          17:51:27.478700 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=1.051µs
          17:51:27.478747 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=1.817µs
          17:51:27.478796 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=3.18µs
          17:51:27.478840 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=5.718µs
          17:51:27.478884 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=8.396µs
          17:51:27.478976 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=10.784µs
          17:51:27.479024 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=13.017µs
          17:51:27.479067 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=16.065µs
          17:51:27.479108 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=19.767µs
          17:51:27.479145 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=27.427µs
          17:51:27.479240 Ino:14159000 typechange 0x8000 -> 0x4000, sleep=36.272µs
          17:51:27.500756 Ino:14291431 typechange 0x4000 -> 0x8000, sleep=0s
          17:51:27.500770 Ino:14291431 typechange 0x4000 -> 0x8000, sleep=1µs
          17:51:27.500779 Ino:14291431 typechange 0x4000 -> 0x8000, sleep=1.873µs
          17:51:27.521194 Ino:14291506 typechange 0x4000 -> 0x8000, sleep=0s
          17:51:27.521207 Ino:14291506 typechange 0x4000 -> 0x8000, sleep=1µs
              rm
          2
              fsstress.1 seed = 1574600636
              fsstress.2 seed = 1574203490
          17:51:29.009666 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=0s
          17:51:29.010068 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=1µs
          17:51:29.010078 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=1.79µs
          17:51:29.010179 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=3.331µs
          17:51:29.010255 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=4.537µs
          17:51:29.010364 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=8.354µs
          17:51:29.010416 Ino:12209562 typechange 0x4000 -> 0xa000, sleep=8.897µs
              fsstress.3 seed = 1573917850
          17:51:33.623359 Ino:14291439 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:33.623378 Ino:14291439 typechange 0x8000 -> 0x4000, sleep=1µs
          17:51:33.623392 Ino:14291439 typechange 0x8000 -> 0x4000, sleep=1.378µs
          17:51:33.644130 Ino:14291494 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:33.644151 Ino:14291494 typechange 0x8000 -> 0x4000, sleep=1µs
          17:51:33.644159 Ino:14291494 typechange 0x8000 -> 0x4000, sleep=1.072µs
          17:51:33.654370 Ino:14291501 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:33.654384 Ino:14291501 typechange 0x8000 -> 0x4000, sleep=1µs
          17:51:33.654393 Ino:14291501 typechange 0x8000 -> 0x4000, sleep=1.588µs
          17:51:33.654399 Ino:14291501 typechange 0x8000 -> 0x4000, sleep=2.639µs
          17:51:33.655098 Ino:14291476 typechange 0x4000 -> 0x8000, sleep=0s
          17:51:33.667216 Ino:14291504 typechange 0x4000 -> 0x8000, sleep=0s
          17:51:33.667228 Ino:14291504 typechange 0x4000 -> 0x8000, sleep=1µs
          17:51:33.667236 Ino:14291504 typechange 0x4000 -> 0x8000, sleep=1.443µs
          17:51:33.667242 Ino:14291504 typechange 0x4000 -> 0x8000, sleep=2.286µs
              rm
          3
              fsstress.1 seed = 1574749722
              fsstress.2 seed = 1574328972
          17:51:35.220180 Ino:13771167 typechange 0x8000 -> 0xa000, sleep=0s
          17:51:35.220205 Ino:13771167 typechange 0x8000 -> 0xa000, sleep=1µs
          17:51:35.514144 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=0s
          17:51:35.514165 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=1µs
          17:51:35.514172 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=1.739µs
          17:51:35.515875 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=1.969µs
          17:51:35.516021 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=3.744µs
          17:51:35.516094 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=4.308µs
          17:51:35.516514 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=5.112µs
          17:51:35.516765 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=5.299µs
          17:51:35.516870 Ino:13771355 typechange 0x4000 -> 0xa000, sleep=8.169µs
          17:51:36.429950 Ino:13771381 typechange 0x8000 -> 0xa000, sleep=0s
          17:51:36.430068 Ino:13771381 typechange 0x8000 -> 0xa000, sleep=1µs
          17:51:36.430082 Ino:13771381 typechange 0x8000 -> 0xa000, sleep=1.071µs
          17:51:36.547108 Ino:13899567 typechange 0x8000 -> 0x4000, sleep=0s
          17:51:36.547121 Ino:13899567 typechange 0x8000 -> 0x4000, sleep=1µs
          17:51:36.547158 Ino:13899567 typechange 0x8000 -> 0x4000, sleep=1.907µs
          17:51:36.547181 Ino:13899567 typechange 0x8000 -> 0x4000, sleep=2.358µs
          17:51:38.112588 Ino:13771503 typechange 0x8000 -> 0xa000, sleep=0s
          17:51:38.112602 Ino:13771503 typechange 0x8000 -> 0xa000, sleep=1µs
          17:51:38.112611 Ino:13771503 typechange 0x8000 -> 0xa000, sleep=1.11µs
          17:51:38.524020 Ino:13899675 typechange 0xa000 -> 0x8000, sleep=0s
          17:51:38.524042 Ino:13899675 typechange 0xa000 -> 0x8000, sleep=1µs
      
      Change-Id: I6120ce76730018d22898127290f492fa9f85a957
      7090b027
    • Jakob Unterwurzacher's avatar
      fs: add TestTypeChange (simulate inode number reuse) · 53f16b0a
      Jakob Unterwurzacher authored
      TestTypeChange simulates inode number reuse that happens on real
      filesystems. For go-fuse, inode number reuse can look like a file changing
      to a directory or vice versa. Acutally, the old inode does not exist anymore,
      we just have not received the FORGET yet.
      
      The test fails reliably with iteration count 100. Will be fixed in the
      next commit.
      
      Test failure looks like this:
      
      	~/go/src/github.com/hanwen/go-fuse/fs$ go test -run TestTypeChange -v
      	=== RUN   TestTypeChange
      	21:43:36.065494 rx 2: INIT i0 {7.31 Ra 0x20000 MAX_PAGES,SPLICE_READ,FLOCK_LOCKS,READDIRPLUS,READDIRPLUS_AUTO,ASYNC_DIO,WRITEBACK_CACHE,HANDLE_KILLPRIV,SPLICE_WRITE,PARALLEL_DIROPS,ABORT_ERROR,EXPLICIT_INVAL_DATA,NO_OPENDIR_SUPPORT,ASYNC_READ,BIG_WRITES,DONT_MASK,IOCTL_DIR,AUTO_INVAL_DATA,POSIX_ACL,CACHE_SYMLINKS,POSIX_LOCKS,ATOMIC_O_TRUNC,EXPORT_SUPPORT,SPLICE_MOVE,NO_OPEN_SUPPORT}
      	21:43:36.065573 tx 2:     OK, {7.28 Ra 0x20000 PARALLEL_DIROPS,AUTO_INVAL_DATA,ASYNC_READ,BIG_WRITES,NO_OPEN_SUPPORT,READDIRPLUS 0/0 Wr 0x10000 Tg 0x0}
      	21:43:36.065742 rx 4: LOOKUP i1 [".go-fuse-epoll-hack"] 20b
      	21:43:36.065798 tx 4:     2=no such file or directory, {i0 g0 tE=0s tA=0s {M00 SZ=0 L=0 0:0 B0*0 i0:0 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.065837 rx 6: CREATE i1 {0100100 [WRONLY,CREAT,TRUNC,0x8000] (00)} [".go-fuse-epoll-hack"] 20b
      	21:43:36.065861 tx 6:     OK, {i18446744073709551615 g0 {M0100644 SZ=0 L=1 0:0 B0*0 i0:18446744073709551615 A 0.000000 M 0.000000 C 0.000000} &{18446744073709551615 0 0}}
      	21:43:36.065945 rx 8: POLL i18446744073709551615
      	21:43:36.065954 tx 8:     38=function not implemented
      	21:43:36.066009 rx 10: FLUSH i18446744073709551615 {Fh 18446744073709551615}
      	21:43:36.066046 tx 10:     5=input/output error
      	21:43:36.066065 rx 12: RELEASE i18446744073709551615 {Fh 18446744073709551615 WRONLY,0x8000  L0}
      	21:43:36.066071 tx 12:     5=input/output error
      	21:43:36.066107 rx 14: LOOKUP i1 ["file"] 5b
      	21:43:36.066181 tx 14:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.066217 rx 16: GETATTR i1234 {Fh 0}
      	21:43:36.066240 tx 16:     OK, {tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.066264 rx 18: LOOKUP i1 ["file"] 5b
      	21:43:36.066285 tx 18:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.066301 rx 20: UNLINK i1 ["file"] 5b
      	21:43:36.066321 tx 20:     OK
      	21:43:36.066361 rx 24: LOOKUP i1 ["dir"] 4b
      	21:43:36.066371 tx 24:     OK, {i1234 g0 tE=0s tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.066383 rx 22: FORGET i1234 {Nlookup=2}
      	21:43:36.066390 rx 26: GETATTR i1234 {Fh 0}
      	21:43:36.068259 tx 26:     OK, {tA=0s {M0100644 SZ=0 L=0 0:0 B0*4096 i0:1234 A 0.000000 M 0.000000 C 0.000000}}
      	21:43:36.069664 received ENODEV (unmount request), thread exiting
      	21:43:36.073309 received ENODEV (unmount request), thread exiting
      	21:43:36.073396 received ENODEV (unmount request), thread exiting
      	--- FAIL: TestTypeChange (0.01s)
      	    bridge_test.go:96: should be a dir now
      	FAIL
      	exit status 1
      	FAIL	github.com/hanwen/go-fuse/v2/fs	0.017s
      
      Change-Id: I7a1a10303ecc0a8c008d29d5d81079868fc2cc43
      53f16b0a
    • Jakob Unterwurzacher's avatar
      fs: addNewChild(): handle concurrent FORGETs · 68f70527
      Jakob Unterwurzacher authored
      As seen in debug logs like shown below, concurrent
      FORGETs and inode number reuse could make use give
      an Inode to the kernel that has already been deleted
      from the nodes[] map.
      
      With this change, I can no langer trigger a panic
      in xfstests generic/007.
      
      Fixes https://github.com/hanwen/go-fuse/issues/324
      
      Nodes that appear to change type are not handled yet
      (actually caused by inode number reuse), but this is
      a separate problem.
      
      Debug log:
      
        17:09:07.651735 rx 84444: CREATE i13632136 {0100644 [WRONLY,TRUNC,CREAT,0x8000] (022)} ["XXXXXXXXXXXX.38"] 16b
        17:09:07.651790 tx 84444:     OK, {i13632483 g1 {M0100644 SZ=0 L=1 0:0 B0*4096 i0:13632483 A 1572192547.650470 M 1572192547.650470 C 1572192547.650470} &{7 0 0}}
        [...]
        17:09:07.684439 rx 87988: CREATE i13632119 {0100644 [CREAT,TRUNC,WRONLY,0x8000] (022)} ["XXXXXXXXXXXX.37"] 16b
        [...]
        17:09:07.684472 rx 87992: FORGET i13632483 {Nlookup=1}
        17:09:07.684483 tx 87988:     OK, {i13632483 g1 {M0100644 SZ=0 L=1 0:0 B0*4096 i0:13632483 A 1572192547.683470 M 1572192547.683470 C 1572192547.683470} &{8 0 0}}
        [...]
        17:09:07.684557 rx 88006: FLUSH i13632483 {Fh 8}
        17:09:07.684560 unknown node 13632483
        17:09:07.684564 tx 88002:     OK,  "XXXXXXXXXXXX.830"
        panic: unknown node 13632483
      
      Change-Id: Ibb1a7a6a459d2e4133a4e512e0816e8ed950a8d7
      68f70527
    • Jakob Unterwurzacher's avatar
      example: loopback: support -q (quiet) · 713e99eb
      Jakob Unterwurzacher authored
      Getting rid of the "Mounted!" message makes it easier
      to integrate into xfstests, which barks at all and any
      unexpected output.
      
      Used by https://github.com/rfjakob/fuse-xfstests/commit/ab1d77ccdb8cf16f79cb312bcb3aaadb23660807
      
      Change-Id: Idff314474b4980ef6f6fc2460b338a840bb0e409
      713e99eb
    • Jakob Unterwurzacher's avatar
      fuse: replace DirEntryList.FixMode() pointer arithmetic · be5a8417
      Jakob Unterwurzacher authored
      As pointed out by @slackner at
      https://github.com/hanwen/go-fuse/commit/8581b7e950b2d520370eba8997ddd9493192e9c7#r35845728
      FixMode() failed to take into account the length
      of the file name and the padding.
      
      To fix this without adding a lot of additional
      pointer arithmetic, add the "lastDirent" field
      to DirEntryList. This stores the last serialized
      _Dirent, so _Dirent.Typ can be accessed easily
      by FixMode().
      
      Change-Id: I6ca3fe551e1a072779b1d5ed5293add057e55287
      be5a8417
    • Han-Wen Nienhuys's avatar
      fs: check outcome of mode fixup result · c9fd0958
      Han-Wen Nienhuys authored
      Add TestReaddirTypeFixup(). This test currently fails
      because FixMode is broken. Will be fixed in a later commit.
      
      Change-Id: Ie4eab9c5817ddb772b73aa22e8f75f5d4f2ad49c
      c9fd0958
  11. 22 Nov, 2019 1 commit
  12. 08 Nov, 2019 2 commits
  13. 07 Nov, 2019 4 commits
    • Jakob Unterwurzacher's avatar
      Travis CI: drop Go 1.9, add Go 1.13 · 692daa62
      Jakob Unterwurzacher authored
      Go 1.9 fails to build the fs tests:
      
        # github.com/kylelemons/godebug/diff
        ../../kylelemons/godebug/diff/diff.go:50:13: undefined: strings.Builder
        ?   	github.com/hanwen/go-fuse/example/zipfs	[no test files]
        FAIL	github.com/hanwen/go-fuse/fs [build failed]
      
      So drop Go 1.9.
      
      Add Go 1.13, which is already at 1.13.3.
      
      Change-Id: Id2286cddc3973a1388f94e1b294db36d7663c37b
      692daa62
    • Jakob Unterwurzacher's avatar
      DirEntryList: implement changing of mode after entry was serialized · 8581b7e9
      Jakob Unterwurzacher authored
      When a directory is modified while READDIRPLUS is running,
      the file type may change between readdir and lookup.
      
      This patch adds the function FixMode() which allows to
      overwrite the file type of the last serialized dirent.
      
      Add test
      
      Fixes https://github.com/hanwen/go-fuse/issues/323
      
      Change-Id: Id45a9c4633e9abcb075588dc610ce8341d104825
      8581b7e9
    • Han-Wen Nienhuys's avatar
      fuse: support direct IO in loopback · 3a40eb5c
      Han-Wen Nienhuys authored
      open(2) has supports direct IO. When opening a file in the loopback
      FS, writes to the underlying would fail, because the FUSE server does
      not position the bytes to write (which come directly after the WriteIn
      header) on a 512-byte boundary.
      
      Fix this by allocating the input buffer with such that the first
      content byte is aligned.
      
      Add a test.
      
      Fixes #328.
      
      Change-Id: Ib7ad24aff673413ab8db4112d0b12143c2654617
      3a40eb5c
    • Han-Wen Nienhuys's avatar
      Filter O_APPEND from open flags. · d1b56cc4
      Han-Wen Nienhuys authored
      As of Go 1.13, os.File doesn't allow WriteAt to O_APPEND. Since the
      kernel translates writes to correct offsets, loopback does not have to
      open the file as O_APPEND.
      
      Fixes #325.
      
      Change-Id: Ib1a7026b94b5604d415ac9fbb5850842dbeffc2a
      d1b56cc4
  14. 06 Nov, 2019 2 commits
  15. 03 Nov, 2019 3 commits
    • Jakob Unterwurzacher's avatar
      Travis CI: set test timeout to 5 minutes · d6dc0f2a
      Jakob Unterwurzacher authored
      Travis CI has a no-output-timeout of 10 minutes.
      Set a lower test timeout so we get proper backtraces
      on a hung test.
      
      Actual test runtime should be about 1 minute.
      
      Change-Id: I3fb40d13fb5bf9efc5e96f3551733205a7502481
      d6dc0f2a
    • Jakob Unterwurzacher's avatar
      posixtest: print more infos on fd leak · d258ee8d
      Jakob Unterwurzacher authored
      gocryptfs has a similar test with somewhat more detailed
      parsing of the open fds. Import the ListFds function from
      gocryptfs and use it to make the error more informative.
      
      Change-Id: I2442364e2e5d49749683072b91bda5691ad8902e
      d258ee8d
    • Jakob Unterwurzacher's avatar
      fs: ReadDirPlus: don't add ".." and "." to the tree · c4765ac7
      Jakob Unterwurzacher authored
      These are not actual directories, and adding them to
      our tree causes directory cycles, so don't.
      
      Before this change, running
      
        $ ./extractloop.bash -loopback
      
      from https://github.com/rfjakob/gocryptfs/tree/master/tests/stress_tests
      quickly caused loopback to get stuck and consume all
      available memory. Things look stable now.
      
      Add a test to verify that rawBridge does not call LOOKUP
      on "." and "..".
      
      Also, add a comment to the "for pd = range p.parents" loop,
      that has caused some head-scratching during debugging.
      
      Change-Id: I15eedeee30043dc57e5fa580fefe59a48674b193
      c4765ac7
  16. 19 Oct, 2019 4 commits
    • Jakob Unterwurzacher's avatar
      fs: ReadDirPlus: don't forget overflow entry · 1cb24af2
      Jakob Unterwurzacher authored
      Even when the directory stream does not have additional
      entries, we may still have an entry in the overflow slot.
      
      Don't forget about it. Test now passes:
      
        go-fuse/fs$ go test
        PASS
        ok  	github.com/hanwen/go-fuse/v2/fs	0.582s
      
      Change-Id: I98b39d4e7df235ed57ae4bf2702532f3b17d1bd0
      1cb24af2
    • Jakob Unterwurzacher's avatar
      posixtest: ReadDir: check directory listing after each file · 0fb2d39e
      Jakob Unterwurzacher authored
      There is an unhandled corner case in the directory stream
      handling. The stricter test catches it:
      
        go-fuse/fs$ go test
        --- FAIL: TestPosix (0.20s)
            --- FAIL: TestPosix/ReadDir (0.09s)
                test.go:342: got 19 entries, want 20
                test.go:342: got 40 entries, want 41
                test.go:342: got 61 entries, want 62
                test.go:342: got 82 entries, want 83
                test.go:342: got 103 entries, want 104
        FAIL
        exit status 1
        FAIL	github.com/hanwen/go-fuse/v2/fs	0.610s
      
      Fix comes next.
      
      Change-Id: I3e22904fce96bf2264ede47656ebd2936a7d13cd
      0fb2d39e
    • Jakob Unterwurzacher's avatar
      loopback: show original directory in "df" · 17c7e2cd
      Jakob Unterwurzacher authored
      Filesystems usually show the underlying device in the first
      column of df. Follow suite and show the original dir, making
      "df" and "mount" output more useful.
      
      The actual reason for this change, however, is that it facilitates
      running xfstests against go-fuse loopback. The xfstests machinery
      checks that the expected device is mounted at the right place.
      
      Commit https://github.com/rfjakob/fuse-xfstests/commit/182841fea487419f493d9b547bf703bee9e39322
      adds support for go-fuse loopback to xfstests and depends on this
      change.
      
      Before:
      
        $ df -T
        Filesystem                 Type           1K-blocks       Used Available Use% Mounted on
        loopback                   fuse.loopback  237371192  149885928  75357828  67% /home/jakob/go/src/github.com/hanwen/go-fuse/example/loopback/b
      
      After:
      
        $ df -T
        Filesystem                 Type           1K-blocks       Used Available Use% Mounted on
        a                          fuse.loopback  237371192  150332024  74911732  67% /home/jakob/go/src/github.com/hanwen/go-fuse/example/loopback/b
      
      Change-Id: I3d5a2e7ab021af4eed657e66654b636e08292219
      17c7e2cd
    • Jakob Unterwurzacher's avatar
      loopback: set filesystem type as shown in "df -T" · 8c10cb4e
      Jakob Unterwurzacher authored
      Per default, "rawBridge" is shown here, which does not tell the user
      much about the filesystem. Set to "loopback" as shown below.
      
      Before:
      
        $ df -T
        Filesystem                 Type            1K-blocks       Used Available Use% Mounted on
        rawBridge                  fuse.rawBridge  237371192  149873220  75370536  67% /home/jakob/go/src/github.com/hanwen/go-fuse/example/loopback/b
      
      After:
      
        $ df -T
        Filesystem                 Type           1K-blocks       Used Available Use% Mounted on
        loopback                   fuse.loopback  237371192  149885928  75357828  67% /home/jakob/go/src/github.com/hanwen/go-fuse/example/loopback/b
      
      Change-Id: Iaaa18b4193b31567f6589669e8c443715afbd362
      8c10cb4e