Age | Commit message (Collapse) | Author |
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- Use the fs.File, rather than the vfs.FileDescription, in the VFS1 version.
- Check for a nil fs.File/vfs.FileDescription before calling DecRef, which is
possible if a racing dup2() or dup3() replaces the file descriptor between
when it is installed and when it is returned. (This is not possible in Linux
because Linux separates allocation of a file descriptor from binding an
allocated file descriptor to a struct file, and dup2/dup3 return EBUSY if
asked to replace an allocated but unbound file descriptor.)
PiperOrigin-RevId: 306517101
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Needed for PipeTest_Flags: files opened by open() and openat() get O_LARGEFILE
(on architectures with 64-bit off_t), but not FDs created by other syscalls
such as pipe().
Updates #1035
PiperOrigin-RevId: 306504788
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PiperOrigin-RevId: 306348346
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Note that most kinds of sockets are not yet supported in VFS2
(only Unix sockets are partially supported at the moment), so
these syscalls will still generally fail. Enabling them allows
us to begin running socket tests for VFS2 as more features are
ported over.
Updates #1476, #1478, #1484, #1485.
PiperOrigin-RevId: 306292294
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PiperOrigin-RevId: 306263615
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noNewPrivileges is ignored if set to false since gVisor assumes that
PR_SET_NO_NEW_PRIVS is always enabled.
PiperOrigin-RevId: 305991947
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As in VFS1, we only support the user.* namespace. Plumbing is added to tmpfs
and goferfs.
Note that because of the slightly different order of checks between VFS2 and
Linux, one of the xattr tests needs to be relaxed slightly.
Fixes #2363.
PiperOrigin-RevId: 305985121
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Block and drain requests in io_destroy(2).
Note the reason to create read-only mapping.
PiperOrigin-RevId: 305786312
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The Linux does the same.
Reported-by: syzbot+e81716e8956e92e9d56b@syzkaller.appspotmail.com
PiperOrigin-RevId: 305625439
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PiperOrigin-RevId: 305067208
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PiperOrigin-RevId: 304119255
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The only test failing now requires socket which is not
available in VFS2 yet.
Updates #1198
PiperOrigin-RevId: 302976572
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PiperOrigin-RevId: 302518924
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Updates #1035
PiperOrigin-RevId: 301255357
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- When setting up the virtual filesystem, mount a host.filesystem to contain
all files that need to be imported.
- Make read/preadv syscalls to the host in cases where preadv2 may not be
supported yet (likewise for writing).
- Make save/restore functions in kernel/kernel.go return early if vfs2 is
enabled.
PiperOrigin-RevId: 300922353
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Note that the raw faccessat system call does not actually take a flags argument;
according to faccessat(2), the glibc wrapper implements the flags by using
fstatat(2). Remove the flag argument that we try to extract from vfs1, which
would just be a garbage value.
Updates #1965
Fixes #2101
PiperOrigin-RevId: 300796067
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PiperOrigin-RevId: 297494373
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MayDelete must lock the directory also, otherwise concurrent renames may
race. Note that this also changes the methods to be aligned with the actual
Remove and RemoveDirectory methods to minimize confusion when reading the
code. (It was hard to see that resolution was correct.)
PiperOrigin-RevId: 297258304
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pipe and pipe2 aren't ported, pending a slight rework of pipe FDs for VFS2.
mount and umount2 aren't ported out of temporary laziness. access and faccessat
need additional FSImpl methods to implement properly, but are stubbed to
prevent googletest from CHECK-failing. Other syscalls require additional
plumbing.
Updates #1623
PiperOrigin-RevId: 297188448
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Users of the API only care about whether the copy in/out succeeds in
their entirety, which is already signalled by the returned error.
PiperOrigin-RevId: 296297843
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glibc defines struct epoll_event in such a way that epoll_event.data.fd exists.
However, the kernel's definition of struct epoll_event makes epoll_event.data
an opaque uint64, so naming half of it "fd" just introduces confusion. Remove
the Fd field, and make Data a [2]int32 to compensate.
Also add required padding to linux.EpollEvent on ARM64.
PiperOrigin-RevId: 295250424
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This requires fixing a few build issues for non-am64 platforms.
PiperOrigin-RevId: 295196922
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- Added fsbridge package with interface that can be used to open
and read from VFS1 and VFS2 files.
- Converted ELF loader to use fsbridge
- Added VFS2 types to FSContext
- Added vfs.MountNamespace to ThreadGroup
Updates #1623
PiperOrigin-RevId: 295183950
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Put most of the logic for getxattr in one place for clarity. This simplifies
FGetXattr and getXattrFromPath, which are just wrappers for getXattr.
PiperOrigin-RevId: 294308332
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