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linux-user: Implement capability prctls 

This is PR_CAPBSET_READ, PR_CAPBSET_DROP and the "legacy"
PR_CAP_AMBIENT PR_GET_SECUREBITS, PR_SET_SECUREBITS.

All of these arguments are integer values only, and do not
require mapping of values between host and guest.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220106225738.103012-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2022-01-06 14:57:38 -08:00 committed by Laurent Vivier
parent f746c65909
commit 4f4e5567f8
1 changed files with 5 additions and 0 deletions
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5
linux-user/syscall.c
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@ -6504,10 +6504,15 @@ static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2,
case PR_SET_UNALIGN:
return do_prctl_set_unalign(env, arg2);
case PR_CAP_AMBIENT:
case PR_CAPBSET_READ:
case PR_CAPBSET_DROP:
case PR_GET_DUMPABLE:
case PR_SET_DUMPABLE:
case PR_GET_KEEPCAPS:
case PR_SET_KEEPCAPS:
case PR_GET_SECUREBITS:
case PR_SET_SECUREBITS:
case PR_GET_TIMING:
case PR_SET_TIMING:
case PR_GET_TIMERSLACK: