commit cc054c6f139cf54ce8fbefd6fd536f50b4cba694
author Helge Deller <deller@gmx.de> Sun Sep 18 21:45:46 2022 +0200
committer Laurent Vivier <laurent@vivier.eu> Tue Sep 27 09:29:33 2022 +0200
tree dee4a109fabef6d328d337c9399540aa0b21d424
parent aad43d15422c358ece148e39887fbd0821bca657

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

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>

linux-user/syscall.c

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index abf82ba..850410c 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -346,6 +346,16 @@
 _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);
@@ -8684,6 +8694,30 @@
         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);
         return get_errno(close(arg1));