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linux-user: Add support for prctl PR_GET_NAME and PR_SET_NAME

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Add support for the prctl options PR_GET_NAME and PR_SET_NAME,
which take or return a name in a 16 byte buffer pointed to by arg2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Peter Maydell 2012-02-03 14:48:03 +00:00 committed by Riku Voipio
parent 1e6722f8b0
commit db9526b10a
1 changed files with 24 additions and 0 deletions
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24
linux-user/syscall.c
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@ -7253,6 +7253,30 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
}
break;
}
#ifdef PR_GET_NAME
case PR_GET_NAME:
{
void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
if (!name) {
goto efault;
}
ret = get_errno(prctl(arg1, (unsigned long)name,
arg3, arg4, arg5));
unlock_user(name, arg2, 16);
break;
}
case PR_SET_NAME:
{
void *name = lock_user(VERIFY_READ, arg2, 16, 1);
if (!name) {
goto efault;
}
ret = get_errno(prctl(arg1, (unsigned long)name,
arg3, arg4, arg5));
unlock_user(name, arg2, 0);
break;
}
#endif
default:
/* Most prctl options have no pointer arguments */
ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));