Age | Commit message (Collapse) | Author |
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Envoy (#170) uses this to get the original destination of redirected
packets.
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PiperOrigin-RevId: 323491461
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PiperOrigin-RevId: 306891171
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The dependency strace=>kernel grew over time. strace also depends on
task's FD table and FSContext. It could be fixed with some interfaces
the other way, but then we're trading an interface for another, and
kernel.Stracer is likely cleaner.
Closes #155
PiperOrigin-RevId: 305909678
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PiperOrigin-RevId: 297220008
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Example:
epoll_ctl(0x3 anon_inode:[eventpoll], EPOLL_CTL_ADD, 0x6 anon_inode:[eventfd], 0x7efe2fd92a80 {events=EPOLLIN|EPOLLOUT data=0x10203040506070a}) = 0x0 (4.411µs)
epoll_wait(0x3 anon_inode:[eventpoll], 0x7efe2fd92b50 {{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}}, 0x3, 0xffffffff) = 0x3 (29.891µs)
PiperOrigin-RevId: 296258146
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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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PiperOrigin-RevId: 294477647
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Log 8, 16, and 32 int optvals and dump the memory of other sizes.
Updates #1782
PiperOrigin-RevId: 293889388
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This isn't in the libc wrapper, but it is in the syscall itself.
Discovered by @xiaobo55x in #1625.
PiperOrigin-RevId: 291973931
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Because the abi will depend on the core types for marshalling (usermem,
context, safemem, safecopy), these need to be flattened from the sentry
directory. These packages contain no sentry-specific details.
PiperOrigin-RevId: 291811289
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PiperOrigin-RevId: 291745021
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Fixes #1490
Fixes #1495
PiperOrigin-RevId: 289523250
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PiperOrigin-RevId: 288965915
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Otherwise, CopyInFDSet will try to allocate a negative-length slice.
PiperOrigin-RevId: 286584907
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Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I006a1845b6aab2c2fdb9d80fffc1868a6a132ecd
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Bitshift operators with signed int is supported in Go 1.13.
PiperOrigin-RevId: 285853622
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I1202 14:55:06.835076 7991 x:0] [ 1] select_test E
select(0xa, 0x7fc6ce924c28 [0 1], null, null, 0x7fc6ce924c08 {sec=0 usec=0})
I1202 14:55:06.835102 7991 x:0] [ 1] select_test X
select(0xa, 0x7fc6ce924c28 [0 1], null, null, 0x7fc6ce924c08 {sec=0 usec=0})
PiperOrigin-RevId: 284831805
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Package strace is missing some syscalls we actually implement (e.g.,
getrandom). We also see newer syscalls sometimes (e.g., membarrier) that would
be handy to have formatted.
Let's go ahead and add all syscalls in the latest upstream release (v5.4), even
though we only intend to implement v4.4. None of them are implemented, just
included as placeholders.
PiperOrigin-RevId: 284797577
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PiperOrigin-RevId: 283613824
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PiperOrigin-RevId: 281795269
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PiperOrigin-RevId: 273365058
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PiperOrigin-RevId: 270680704
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PiperOrigin-RevId: 267498537
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Linux allows to call connect for ANY and the zero port.
PiperOrigin-RevId: 263892534
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PiperOrigin-RevId: 256433283
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This renames FDMap to FDTable and drops the kernel.FD type, which had an entire
package to itself and didn't serve much use (it was freely cast between types,
and served as more of an annoyance than providing any protection.)
Based on BenchmarkFDLookupAndDecRef-12, we can expect 5-10 ns per lookup
operation, and 10-15 ns per concurrent lookup operation of savings.
This also fixes two tangential usage issues with the FDMap. Namely, non-atomic
use of NewFDFrom and associated calls to Remove (that are both racy and fail to
drop the reference on the underlying file.)
PiperOrigin-RevId: 256285890
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Addresses obvious typos, in the documentation only.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/443 from Pixep:fix/documentation-spelling 4d0688164eafaf0b3010e5f4824b35d1e7176d65
PiperOrigin-RevId: 255477779
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This can be merged after:
https://github.com/google/gvisor-website/pull/77
or
https://github.com/google/gvisor-website/pull/78
PiperOrigin-RevId: 253132620
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SockType isn't specific to unix domain sockets, and the current
definition basically mirrors the linux ABI's definition.
PiperOrigin-RevId: 251956740
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Based on the guidelines at
https://opensource.google.com/docs/releasing/authors/.
1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./'
2. Manual fixup of "Google Inc" references.
3. Add AUTHORS file. Authors may request to be added to this file.
4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS.
Fixes #209
PiperOrigin-RevId: 245823212
Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
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PiperOrigin-RevId: 245818639
Change-Id: I03703ef0fb9b6675955637b9fe2776204c545789
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I0410 15:40:38.854295 3776 x:0] [ 1] poll_test E poll(0x2b00bfb5c020 [{FD: 0x3 anon_inode:[eventfd], Events: POLLOUT, REvents: ...}], 0x1, 0x1)
I0410 15:40:38.854348 3776 x:0] [ 1] poll_test X poll(0x2b00bfb5c020 [{FD: 0x3 anon_inode:[eventfd], Events: POLLOUT|POLLERR|POLLHUP, REvents: POLLOUT}], 0x1, 0x1) = 0x1 (10.765?s)
PiperOrigin-RevId: 244269879
Change-Id: If07ba54a486fdeaaedfc0123769b78d1da862307
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Normal files display their path in the current mount namespace:
I0410 10:57:54.964196 216336 x:0] [ 1] ls X read(0x3 /proc/filesystems, 0x55cee3bdb2c0 "nodev\t9p\nnodev\tdevpts \nnodev\tdevtmpfs\nnodev\tproc\nnodev\tramdiskfs\nnodev\tsysfs\nnodev\ttmpfs\n", 0x1000) = 0x58 (24.462?s)
AT_FDCWD includes the CWD:
I0411 12:58:48.278427 1526 x:0] [ 1] stat_test E newfstatat(AT_FDCWD /home/prattmic, 0x55ea719b564e /proc/self, 0x7ef5cefc2be8, 0x0)
Sockets (and other non-vfs files) display an inode number (like
/proc/PID/fd):
I0410 10:54:38.909123 207684 x:0] [ 1] nc E bind(0x3 socket:[1], 0x55b5a1652040 {Family: AF_INET, Addr: , Port: 8080}, 0x10)
I also fixed a few syscall args that should be Path.
PiperOrigin-RevId: 243169025
Change-Id: Ic7dda6a82ae27062fe2a4a371557acfd6a21fa2a
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PiperOrigin-RevId: 242978508
Change-Id: I0ea59ac5ba1dd499e87c53f2e24709371048679b
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I0225 15:32:10.795034 4166 x:0] [ 6] E capget(0x7f477fdff8c8 {Version: 3, Pid: 0}, 0x7f477fdff8b0)
I0225 15:32:10.795059 4166 x:0] [ 6] X capget(0x7f477fdff8c8 {Version: 3, Pid: 0}, 0x7f477fdff8b0 {Permitted: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Inheritable: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Effective: 0x0}) = 0x0 (3.399?s)
I0225 15:32:10.795114 4166 x:0] [ 6] E capset(0x7f477fdff8c8 {Version: 3, Pid: 0}, 0x7f477fdff8b0 {Permitted: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Inheritable: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Effective: CAP_FOWNER})
I0225 15:32:10.795127 4166 x:0] [ 6] X capset(0x7f477fdff8c8 {Version: 3, Pid: 0}, 0x7f477fdff8b0 {Permitted: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Inheritable: CAP_CHOWN|CAP_DAC_OVERRIDE|CAP_DAC_READ_SEARCH|CAP_FOWNER|CAP_FSETID|CAP_KILL|CAP_SETGID|CAP_SETUID|CAP_SETPCAP|CAP_LINUX_IMMUTABLE|CAP_NET_BIND_SERVICE|CAP_NET_BROADCAST|CAP_NET_ADMIN|CAP_NET_RAW|CAP_IPC_LOCK|CAP_IPC_OWNER|CAP_SYS_MODULE|CAP_SYS_RAWIO|CAP_SYS_CHROOT|CAP_SYS_PTRACE|CAP_SYS_PACCT|CAP_SYS_ADMIN|CAP_SYS_BOOT|CAP_SYS_NICE|CAP_SYS_RESOURCE|CAP_SYS_TIME|CAP_SYS_TTY_CONFIG|CAP_MKNOD|CAP_LEASE|CAP_AUDIT_WRITE|CAP_AUDIT_CONTROL|CAP_SETFCAP|CAP_MAC_OVERRIDE|CAP_MAC_ADMIN|CAP_SYSLOG|CAP_WAKE_ALARM|CAP_BLOCK_SUSPEND|CAP_AUDIT_READ, Effective: CAP_FOWNER}) = 0x0 (3.062?s)
Not the most readable, but better than just a pointer.
PiperOrigin-RevId: 236338875
Change-Id: I4b83f778122ab98de3874e16f4258dae18da916b
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Nothing reads them and they can simply get stale.
Generated with:
$ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD
PiperOrigin-RevId: 231818945
Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
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The code that matches the event being published with events watchers
was wronly matching all watchers in case any of the control event bits
were set.
Issue #121
PiperOrigin-RevId: 226521230
Change-Id: Ie2c42bc4366faaf59fbf80a74e9297499bd93f9e
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unshare actually takes a subset of clone flags, but has no unique flags,
so formatting as clone flags is close enough.
PiperOrigin-RevId: 225082774
Change-Id: I5b580f18607c7785f323e37809094115520a17c0
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Sample:
I1206 14:24:56.768520 3700 x:0] [ 1] ioctl_test E rt_sigaction(SIGSEGV, 0x7ee6edb0c590 {Handler: 0x559c6d915cf0, Flags: SA_SIGINFO|SA_RESTORER|SA_ONSTACK|SA_NODEFER, Restorer: 0x2a9901a259a0, Mask: []}, 0x7ee6edb0c630)
I1206 14:24:56.768530 3700 x:0] [ 1] ioctl_test X rt_sigaction(SIGSEGV, 0x7ee6edb0c590 {Handler: 0x559c6d915cf0, Flags: SA_SIGINFO|SA_RESTORER|SA_ONSTACK|SA_NODEFER, Restorer: 0x2a9901a259a0, Mask: []}, 0x7ee6edb0c630 {Handler: SIG_DFL, Flags: 0x0, Restorer: 0x0, Mask: []}) = 0x0 (2.701?s)
PiperOrigin-RevId: 224596606
Change-Id: I3512493aed99d3d75600249263da46686b1dc0e7
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Sample:
I1205 16:51:49.869701 2492 x:0] [ 1] ioctl_test E rt_sigaction(SIGIO, 0x7e0e5b5e8500, 0x7e0e5b5e85a0)
I1205 16:51:49.869766 2492 x:0] [ 1] ioctl_test X rt_sigaction(SIGIO, 0x7e0e5b5e8500, 0x7e0e5b5e85a0) = 0x0 (44.336?s)
I1205 16:51:49.869831 2492 x:0] [ 1] ioctl_test E rt_sigprocmask(SIG_UNBLOCK, 0x7e0e5b5e8878 [SIGIO], 0x7e0e5b5e87c0, 0x8)
I1205 16:51:49.869866 2492 x:0] [ 1] ioctl_test X rt_sigprocmask(SIG_UNBLOCK, 0x7e0e5b5e8878 [SIGIO], 0x7e0e5b5e87c0 [SIGIO 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64], 0x8) = 0x0 (2.575?s)
PiperOrigin-RevId: 224422404
Change-Id: I3ed3f2ec6b1a639baa9cacd37ce7ee325c3703e4
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Unlike FlagSet, order doesn't matter here, so it can simply be a map.
PiperOrigin-RevId: 224377910
Change-Id: I15810c698a7f02d8614bf09b59583ab73cba0514
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This change also adds extensive testing to the p9 package via mocks. The sanity
checks and type checks are moved from the gofer into the core package, where
they can be more easily validated.
PiperOrigin-RevId: 218296768
Change-Id: I4fc3c326e7bf1e0e140a454cbacbcc6fd617ab55
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PiperOrigin-RevId: 217951017
Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
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PiperOrigin-RevId: 217573168
Change-Id: Ic1914d0ef71bab020e3ee11cf9c4a50a702bd8dd
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This is a defense-in-depth measure. If the sentry is compromised, this prevents
system call injection to the stubs. There is some complexity with respect to
ptrace and seccomp interactions, so this protection is not really available
for kernel versions < 4.8; this is detected dynamically.
Note that this also solves the vsyscall emulation issue by adding in
appropriate trapping for those system calls. It does mean that a compromised
sentry could theoretically inject these into the stub (ignoring the trap and
resume, thereby allowing execution), but they are harmless.
PiperOrigin-RevId: 216647581
Change-Id: Id06c232cbac1f9489b1803ec97f83097fcba8eb8
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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: 215278262
Change-Id: Icd10384c99802be6097be938196044386441e282
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PiperOrigin-RevId: 212874745
Change-Id: I0c3e8e6a9e8976631cee03bf0b8891b336ddb8c8
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We have been unnecessarily creating too many savable types implicitly.
PiperOrigin-RevId: 206334201
Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
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