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| author | Richard Henderson <richard.henderson@linaro.org> | 2024-03-01 14:52:30 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-03-12 03:35:00 -1000 |
| commit | 07726f522deea2b98f39f7acdd32c60a35d65d1a (patch) | |
| tree | 782a383cfc4b704b217fec13053d147ff1737847 /linux-user/syscall.c | |
| parent | f9eebe31a74add73973a978a6af366ec442f45cf (diff) | |
| download | focaccia-qemu-07726f522deea2b98f39f7acdd32c60a35d65d1a.tar.gz focaccia-qemu-07726f522deea2b98f39f7acdd32c60a35d65d1a.zip | |
linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER
The "set" prctl passes through integral values. The "get" prctl returns the value into a pointer. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1929 Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 597bdf0c2d..0801ae124d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6450,11 +6450,21 @@ static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2, case PR_SET_NO_NEW_PRIVS: case PR_GET_IO_FLUSHER: case PR_SET_IO_FLUSHER: + case PR_SET_CHILD_SUBREAPER: /* Some prctl options have no pointer arguments and we can pass on. */ return get_errno(prctl(option, arg2, arg3, arg4, arg5)); case PR_GET_CHILD_SUBREAPER: - case PR_SET_CHILD_SUBREAPER: + { + int val; + ret = get_errno(prctl(PR_GET_CHILD_SUBREAPER, &val, + arg3, arg4, arg5)); + if (!is_error(ret) && put_user_s32(val, arg2)) { + return -TARGET_EFAULT; + } + return ret; + } + case PR_GET_SPECULATION_CTRL: case PR_SET_SPECULATION_CTRL: case PR_GET_TID_ADDRESS: |