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| author | Kir Kolyshkin <kolyshkin@gmail.com> | 2023-08-16 19:20:54 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-09-07 19:11:15 +0000 |
| commit | da7ee57f40069eda3488b2e51dfa878bdd5816af (patch) | |
| tree | d0830dc406737df376008d1ff52f684a66ed1039 /src/syscall/syscall_linux_arm.go | |
| parent | 584d646559eb6c5942410f2ba2d2806f2627c2a2 (diff) | |
| download | go-da7ee57f40069eda3488b2e51dfa878bdd5816af.tar.xz | |
syscall: add support to get pidfd from ForkExec on Linux
Add PidFD support, so that if the PidFD pointer in SysProcAttr is not
nil, ForkExec (and thus all its users) obtains a pidfd from the kernel
during clone(), and writes the result (or -1, if the functionality
is not supported by the kernel) into *PidFD.
The functionality to get pidfd is implemented for both clone3 and clone.
For the latter, an extra argument to rawVforkSyscall is needed, thus the
change in asm files.
Add a trivial test case checking the obtained pidfd can be used to send
a signal to a process, using pidfd_send_signal. To test clone3 code path,
add a flag available to tests only.
Updates #51246.
Change-Id: I2212b69e1a657163c31b4a6245b076bc495777a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/520266
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Diffstat (limited to 'src/syscall/syscall_linux_arm.go')
| -rw-r--r-- | src/syscall/syscall_linux_arm.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/syscall/syscall_linux_arm.go b/src/syscall/syscall_linux_arm.go index 600ec3552d..15c53d64b6 100644 --- a/src/syscall/syscall_linux_arm.go +++ b/src/syscall/syscall_linux_arm.go @@ -7,9 +7,10 @@ package syscall import "unsafe" const ( - _SYS_setgroups = SYS_SETGROUPS32 - _SYS_clone3 = 435 - _SYS_faccessat2 = 439 + _SYS_setgroups = SYS_SETGROUPS32 + _SYS_clone3 = 435 + _SYS_faccessat2 = 439 + _SYS_pidfd_send_signal = 424 ) func setTimespec(sec, nsec int64) Timespec { |