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[PULL 2/8] linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER
From: |
Richard Henderson |
Subject: |
[PULL 2/8] linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER |
Date: |
Tue, 12 Mar 2024 08:41:09 -1000 |
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>
---
linux-user/syscall.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
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:
--
2.34.1
- [PULL 0/8] tcg + linux-user patch queue, Richard Henderson, 2024/03/12
- [PULL 1/8] linux-user: Add FIFREEZE and FITHAW ioctls, Richard Henderson, 2024/03/12
- [PULL 3/8] linux-user: Implement PR_{GET,SET}_SPECULATION_CTRL, Richard Henderson, 2024/03/12
- [PULL 2/8] linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER,
Richard Henderson <=
- [PULL 4/8] linux-user: Implement PR_GET_TID_ADDRESS, Richard Henderson, 2024/03/12
- [PULL 8/8] tcg/aarch64: Fix tcg_out_brcond for test comparisons, Richard Henderson, 2024/03/12
- [PULL 6/8] linux-user/elfload: Fully initialize struct target_elf_prpsinfo, Richard Henderson, 2024/03/12
- [PULL 5/8] linux-user/elfload: Don't close an unopened file descriptor, Richard Henderson, 2024/03/12
- [PULL 7/8] tcg/aarch64: Fix tcg_out_cmp for test comparisons, Richard Henderson, 2024/03/12
- Re: [PULL 0/8] tcg + linux-user patch queue, Peter Maydell, 2024/03/13