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linux-user: Add pidfd_open(), pidfd_send_signal() and pidfd_getfd() syscalls

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I noticed those were missing when running the glib2.0 testsuite.
Add the syscalls including the strace output.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220918194555.83535-4-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Helge Deller 2022-09-18 21:45:46 +02:00 committed by Laurent Vivier
parent aad43d1542
commit cc054c6f13
3 changed files with 71 additions and 0 deletions
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28
linux-user/strace.c
View File

@ -3317,6 +3317,34 @@ print_openat(CPUArchState *cpu_env, const struct syscallname *name,
}
#endif
#ifdef TARGET_NR_pidfd_send_signal
static void
print_pidfd_send_signal(CPUArchState *cpu_env, const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
void *p;
target_siginfo_t uinfo;
print_syscall_prologue(name);
print_raw_param("%d", arg0, 0);
print_signal(arg1, 0);
p = lock_user(VERIFY_READ, arg2, sizeof(target_siginfo_t), 1);
if (p) {
get_target_siginfo(&uinfo, p);
print_siginfo(&uinfo);
unlock_user(p, arg2, 0);
} else {
print_pointer(arg2, 1);
}
print_raw_param("%u", arg3, 0);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mq_unlink
static void
print_mq_unlink(CPUArchState *cpu_env, const struct syscallname *name,

9
linux-user/strace.list
View File

@ -1664,6 +1664,15 @@
#ifdef TARGET_NR_pipe2
{ TARGET_NR_pipe2, "pipe2", NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_pidfd_open
{ TARGET_NR_pidfd_open, "pidfd_open", "%s(%d,%u)", NULL, NULL },
#endif
#ifdef TARGET_NR_pidfd_send_signal
{ TARGET_NR_pidfd_send_signal, "pidfd_send_signal", NULL, print_pidfd_send_signal, NULL },
#endif
#ifdef TARGET_NR_pidfd_getfd
{ TARGET_NR_pidfd_getfd, "pidfd_getfd", "%s(%d,%d,%u)", NULL, NULL },
#endif
#ifdef TARGET_NR_atomic_cmpxchg_32
{ TARGET_NR_atomic_cmpxchg_32, "atomic_cmpxchg_32", NULL, NULL, NULL },
#endif

34
linux-user/syscall.c
View File

@ -346,6 +346,16 @@ _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
_syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif
#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
_syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags);
#endif
#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
_syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info,
unsigned int, flags);
#endif
#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
_syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags);
#endif
#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
@ -8683,6 +8693,30 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
ret = do_open_by_handle_at(arg1, arg2, arg3);
fd_trans_unregister(ret);
return ret;
#endif
#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
case TARGET_NR_pidfd_open:
return get_errno(pidfd_open(arg1, arg2));
#endif
#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
case TARGET_NR_pidfd_send_signal:
{
siginfo_t uinfo;
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);
ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
&uinfo, arg4));
}
return ret;
#endif
#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
case TARGET_NR_pidfd_getfd:
return get_errno(pidfd_getfd(arg1, arg2, arg3));
#endif
case TARGET_NR_close:
fd_trans_unregister(arg1);