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Implement RWF_HIPRI (4.6) silently passes the read call.
Implement -1 offset calls readv.
PiperOrigin-RevId: 222840324
Change-Id: If9ddc1e8d086e1a632bdf5e00bae08205f95b6b0
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RET_KILL_THREAD doesn't work well for Go because it will
kill only the offending thread and leave the process hanging.
RET_TRAP can be masked out and it's not guaranteed to kill
the process. RET_KILL_PROCESS is available since 4.14.
For older kernel, continue to use RET_TRAP as this is the
best option (likely to kill process, easy to debug).
PiperOrigin-RevId: 222357867
Change-Id: Icc1d7d731274b16c2125b7a1ba4f7883fbdb2cbd
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PiperOrigin-RevId: 222148953
Change-Id: I21500a9f08939c45314a6414e0824490a973e5aa
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sync_file_range - sync a file segment with disk
In Linux, sync_file_range() accepts three flags:
SYNC_FILE_RANGE_WAIT_BEFORE
Wait upon write-out of all pages in the specified range that
have already been submitted to the device driver for write-out
before performing any write.
SYNC_FILE_RANGE_WRITE
Initiate write-out of all dirty pages in the specified range
which are not presently submitted write-out. Note that even
this may block if you attempt to write more than request queue
size.
SYNC_FILE_RANGE_WAIT_AFTER
Wait upon write-out of all pages in the range after performing
any write.
In this implementation:
SYNC_FILE_RANGE_WAIT_BEFORE without SYNC_FILE_RANGE_WAIT_AFTER isn't
supported right now.
SYNC_FILE_RANGE_WRITE is skipped. It should initiate write-out of all
dirty pages, but it doesn't wait, so it should be safe to do nothing
while nobody uses SYNC_FILE_RANGE_WAIT_BEFORE.
SYNC_FILE_RANGE_WAIT_AFTER is equal to fdatasync(). In Linux,
sync_file_range() doesn't writes out the file's meta-data, but
fdatasync() does if a file size is changed.
PiperOrigin-RevId: 220730840
Change-Id: Iae5dfb23c2c916967d67cf1a1ad32f25eb3f6286
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Added events for *ctl syscalls that may have multiple different commands.
For runsc, each syscall event is only logged once. For *ctl syscalls, use
the cmd as identifier, not only the syscall number.
PiperOrigin-RevId: 218015941
Change-Id: Ie3c19131ae36124861e9b492a7dbe1765d9e5e59
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PiperOrigin-RevId: 217951017
Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
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Also properly add padding after Procs in the linux.Sysinfo
structure. This will be implicitly padded to 64bits so we
need to do the same.
PiperOrigin-RevId: 216372907
Change-Id: I6eb6a27800da61d8f7b7b6e87bf0391a48fdb475
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We accidentally set the wrong maximum. I've also added PATH_MAX and
NAME_MAX to the linux abi package.
PiperOrigin-RevId: 216221311
Change-Id: I44805fcf21508831809692184a0eba4cee469633
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PiperOrigin-RevId: 215658757
Change-Id: If63b33293f3e53a7f607ae72daa79e2b7ef6fcfd
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PiperOrigin-RevId: 215278262
Change-Id: Icd10384c99802be6097be938196044386441e282
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We already forward TCSETS and TCSETSW. TCSETSF is roughly equivalent but
discards pending input.
The filters were relaxed to allow host ioctls with TCSETSF argument.
This fixes programs like "passwd" that prevent user input from being displayed
on the terminal.
Before:
root@b8a0240fc836:/# passwd
Enter new UNIX password: 123
Retype new UNIX password: 123
passwd: password updated successfully
After:
root@ae6f5dabe402:/# passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
PiperOrigin-RevId: 214869788
Change-Id: I31b4d1373c1388f7b51d0f2f45ce40aa8e8b0b58
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PiperOrigin-RevId: 213058623
Change-Id: I522598c655d633b9330990951ff1c54d1023ec29
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PiperOrigin-RevId: 211644897
Change-Id: I882ed827a477d6c03576463ca5bf2d6351892b90
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PiperOrigin-RevId: 210459956
Change-Id: I51859b90fa967631e0a54a390abc3b5541fbee66
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Implements the TIOCGWINSZ and TIOCSWINSZ ioctls, which allow processes to resize
the terminal. This allows, for example, sshd to properly set the window size for
ssh sessions.
PiperOrigin-RevId: 210392504
Change-Id: I0d4789154d6d22f02509b31d71392e13ee4a50ba
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This CL adds terminal support for "docker exec". We previously only supported
consoles for the container process, but not exec processes.
The SYS_IOCTL syscall was added to the default seccomp filter list, but only
for ioctls that get/set winsize and termios structs. We need to allow these
ioctl for all containers because it's possible to run "exec -ti" on a
container that was started without an attached console, after the filters
have been installed.
Note that control-character signals are still not properly supported.
Tested with:
$ docker run --runtime=runsc -it alpine
In another terminial:
$ docker exec -it <containerid> /bin/sh
PiperOrigin-RevId: 210185456
Change-Id: I6d2401e53a7697bb988c120a8961505c335f96d9
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PiperOrigin-RevId: 210021612
Change-Id: If7c161e6fd08cf17942bfb6bc5a8d2c4e271c61e
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PiperOrigin-RevId: 208685417
Change-Id: Ie2849c4811e3a2d14a002f521cef018ded0c6c4a
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Currently the implementation matches the behavior of moving data
between two file descriptors. However, it does not implement this
through zero-copy movement. Thus, this code is a starting point
to build the more complex implementation.
PiperOrigin-RevId: 208284483
Change-Id: Ibde79520a3d50bc26aead7ad4f128d2be31db14e
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Cleanup some more syscall.O_* references while we're here.
PiperOrigin-RevId: 208133460
Change-Id: I48db71a38f817e4f4673977eafcc0e3874eb9a25
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Closes #94
PiperOrigin-RevId: 207997580
Change-Id: I19b426f1586b5ec12f8b0cd5884d5b401d334924
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PiperOrigin-RevId: 207180809
Change-Id: I08c264812919e81b2c56fdd4a9ef06924de8b52f
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PiperOrigin-RevId: 207125440
Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
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PiperOrigin-RevId: 207037226
Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
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PiperOrigin-RevId: 207007153
Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
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This flag will always be true for gVisor files.
PiperOrigin-RevId: 206355963
Change-Id: I2f03d2412e2609042df43b06d1318cba674574d0
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We have been unnecessarily creating too many savable types implicitly.
PiperOrigin-RevId: 206334201
Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
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PiperOrigin-RevId: 204936533
Change-Id: Ib060920077fc914f97c4a0548a176d1368510c7b
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PiperOrigin-RevId: 204858314
Change-Id: I8252bf8de3232a7a27af51076139b585e73276d4
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This method allows an eventfd inside the Sentry to be registered with with
the host kernel.
Update comment about memory mapping host fds via CachingInodeOperations.
PiperOrigin-RevId: 204784859
Change-Id: I55823321e2d84c17ae0f7efaabc6b55b852ae257
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PiperOrigin-RevId: 204188763
Change-Id: I5596ab7abb3ec9e210a7f57b3fc420e836fa43f3
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FIOASYNC and friends are used to send signals when a file is ready for IO.
This may or may not be needed by Nginx. While Nginx does use it, it is unclear
if the code that uses it has any effect.
PiperOrigin-RevId: 201550828
Change-Id: I7ba05a7db4eb2dfffde11e9bd9a35b65b98d7f50
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PiperOrigin-RevId: 197058289
Change-Id: I3946c25028b7e032be4894d61acb48ac0c24d574
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PiperOrigin-RevId: 196331627
Change-Id: Ifef4485f8202c52481af317cedd52d2ef48cea6a
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PiperOrigin-RevId: 196281052
Change-Id: Ie620a0f983a1bf2570d0003d4754611879335c1c
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PiperOrigin-RevId: 195849066
Change-Id: If2146c7ce649522f86e661c5e52a9983345d6967
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There was a typo and one new capability missing from the list
PiperOrigin-RevId: 195427713
Change-Id: I6d9e1c6e77b48fe85ef10d9f54c70c8a7271f6e7
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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