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linux-user: fix pidfd_send_signal() #24

Merged
andreas-schwab merged 1 commits from factory into factory 2023-05-16 05:33:36 +02:00
Conversation 1 Commits 1 Files Changed 2 +14 -9
2 changed files with 14 additions and 9 deletions
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4
linux-user/strace.c
View File

@@ -3297,10 +3297,10 @@ print_pidfd_send_signal(CPUArchState *cpu_env, const struct syscallname *name,
unlock_user(p, arg2, 0);
} else {
print_pointer(arg2, 1);
print_pointer(arg2, 0);
}
print_raw_param("%u", arg3, 0);
print_raw_param("%u", arg3, 1);
print_syscall_epilogue(name);
}
#endif

19
linux-user/syscall.c
View File

@@ -8737,16 +8737,21 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_ulong arg1,
#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
case TARGET_NR_pidfd_send_signal:
{
siginfo_t uinfo;
siginfo_t uinfo, *puinfo;
p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
if (!p) {
return -TARGET_EFAULT;
if (arg3) {
p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
if (!p) {
return -TARGET_EFAULT;
}
target_to_host_siginfo(&uinfo, p);
unlock_user(p, arg3, 0);
puinfo = &uinfo;
} else {
puinfo = NULL;
}
target_to_host_siginfo(&uinfo, p);
unlock_user(p, arg3, 0);
ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
&uinfo, arg4));
puinfo, arg4));
}
return ret;
#endif