Age | Commit message (Collapse) | Author |
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We were getting the file attributes before locking the metadataMu which was
causing stale updates to the file attributes.
Fixes OpenTest_AppendConcurrentWrite.
Updates #2923
PiperOrigin-RevId: 322804438
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Updates #2923
PiperOrigin-RevId: 322671489
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Helps in fixing open syscall tests: AppendConcurrentWrite and AppendOnly.
We also now update the file size for seekable special files (regular files)
which we were not doing earlier.
Updates #2923
PiperOrigin-RevId: 322670843
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PiperOrigin-RevId: 321496734
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Now it calls pkt.Data.ToView() when writing the packet. This may require
copying when the packet is large, which puts the worse case in an even worse
situation.
This sent out in a separate preparation change as it requires syscall filter
changes. This change will be followed by the change for the adoption of the new
PacketHeader API.
PiperOrigin-RevId: 321447003
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PiperOrigin-RevId: 321411758
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PiperOrigin-RevId: 321269281
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To implement stat(2) in FUSE, we have to embed credentials and pid in request
header. The information should be extracted from the context passed to VFS
layer. Therefore `Stat()` signature in `kernfs.Inode` interface should include
context as first argument. Some other fs implementations need to be modified as
well, such as devpts, host, pipefs, and proc.
Fixes #3235
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PiperOrigin-RevId: 321053634
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For accessing metadata fields:
- If metadataMu is locked, we can access without atomics
- If metadataMu is unlocked, we should use atomics
For mutating metadata fields:
- Always lock metadataMu and use atomics.
There were some instances of inconsistencies which have been fixed.
PiperOrigin-RevId: 321022895
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This change gates all FUSE commands (by gating /dev/fuse) behind a runsc
flag. In order to use FUSE commands, use the --fuse flag with the --vfs2
flag. Check if FUSE is enabled by running dmesg in the sandbox.
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Container restart test is disabled for VFS2 for now.
Updates #1487
PiperOrigin-RevId: 320296401
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Removed VDSO dependency on VFS1.
Resolves #2921
PiperOrigin-RevId: 320122176
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This change fixes a few things:
- creating sockets using mknod(2) is supported via vfs2
- fsgofer can create regular files via mknod(2)
- mode = 0 for mknod(2) will be interpreted as regular file in vfs2 as well
Updates #2923
PiperOrigin-RevId: 320074267
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The fdnotifier package provides an API to a thread that continually epolls
arbitrary host FDs. The set of events polled for each host FD is (intended to
be) all events for which a waiter.Entry has expressed interest, as returned by
waiter.Queue.Events() for the waiter.Queue registered to the given host FD.
When the set of events changes (due to a change in the set of registered
waiter.Entries), the mutator must call fdnotifier.UpdateFD() to recalculate the
new event set and propagate it to the epoll FD.
PiperOrigin-RevId: 319924719
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Calling sync on a readonly file flushes metadata that
may have been modified, like last access time.
Updates #1198
PiperOrigin-RevId: 319888290
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Reserve the MSB from ino for synthetic dentries to prevent
conflict with regular dentries. Log warning in case MSB is
set for regular dentries.
Updates #1487
PiperOrigin-RevId: 319869858
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We do not support RWF_SYNC/RWF_DSYNC and probably shouldn't silently accept
them, since the user may incorrectly believe that we are synchronizing I/O.
Remove the pwritev2 test verifying that we support these flags.
gvisor.dev/issue/2601 is the tracking bug for deciding which RWF_.* flags
we need and supporting them.
Updates #2923, #2601.
PiperOrigin-RevId: 319351286
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We were not invalidating mappings when the file size changed in shared mode.
Enabled the syscall test for vfs2.
Updates #2923
PiperOrigin-RevId: 319346569
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Some Open:TruncateXxx syscall tests were failing because the file size was
not being updated when the file was opened with O_TRUNC.
Fixes Truncate tests in test/syscalls:open_test_runsc_ptrace_vfs2.
Updates #2923
PiperOrigin-RevId: 319340127
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Complements cl/315991648.
PiperOrigin-RevId: 319327853
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Currently, we always perform a full-file sync which could be extremely
expensive for some applications. Although vfs1 did not fully support
sync_file_range, there were some optimizations that allowed us skip some
unnecessary write-outs.
Updates #2923, #1897.
PiperOrigin-RevId: 319324213
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PiperOrigin-RevId: 319283715
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We were truncating buf using a index relative to the middle of the slice (i.e.
where envv begins), but we need to calculate the index relative to the entire
slice.
Updates #2923.
PiperOrigin-RevId: 319154950
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Updates #2923.
PiperOrigin-RevId: 319153792
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PiperOrigin-RevId: 319143410
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Updates #2923.
PiperOrigin-RevId: 318648128
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