Fix libc-test and add more pidfd definitions

Author: rusty-snake

libc-test/build.rs

@@ -4049,6 +4049,10 @@ fn test_linux(target: &str) {
             // Might differ between kernel versions
             "open_how" => true,
 
+            // Linux >= 6.13 (pidfd_info.exit_code: Linux >= 6.15)
+            // Might differ between kernel versions
+            "pidfd_info" => true,
+
             "sctp_initmsg" | "sctp_sndrcvinfo" | "sctp_sndinfo" | "sctp_rcvinfo"
             | "sctp_nxtinfo" | "sctp_prinfo" | "sctp_authinfo" => true,
 
@@ -4554,6 +4558,31 @@ fn test_linux(target: &str) {
             // FIXME(linux): Requires >= 6.4 kernel headers.
             "PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG" | "PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG" => true,
 
+            // Linux >= 6.9
+            "PIDFD_THREAD"
+            | "PIDFD_SIGNAL_THREAD"
+            | "PIDFD_SIGNAL_THREAD_GROUP"
+            | "PIDFD_SIGNAL_PROCESS_GROUP" => true,
+            // Linux >= 6.11
+            "PIDFD_GET_CGROUP_NAMESPACE"
+            | "PIDFD_GET_IPC_NAMESPACE"
+            | "PIDFD_GET_MNT_NAMESPACE"
+            | "PIDFD_GET_NET_NAMESPACE"
+            | "PIDFD_GET_PID_NAMESPACE"
+            | "PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE"
+            | "PIDFD_GET_TIME_NAMESPACE"
+            | "PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE"
+            | "PIDFD_GET_USER_NAMESPACE"
+            | "PIDFD_GET_UTS_NAMESPACE" => true,
+            // Linux >= 6.13
+            "PIDFD_GET_INFO"
+            | "PIDFD_INFO_PID"
+            | "PIDFD_INFO_CREDS"
+            | "PIDFD_INFO_CGROUPID"
+            | "PIDFD_INFO_SIZE_VER0" => true,
+            // Linux >= 6.15
+            "PIDFD_INFO_EXIT" | "PIDFD_SELF" | "PIDFD_SELF_PROCESS" => true,
+
             _ => false,
         }
     });

src/unix/linux_like/linux/gnu/mod.rs

@@ -1,6 +1,9 @@
 use crate::off64_t;
 use crate::prelude::*;
 
+use super::_IO;
+use super::_IOWR;
+
 pub type pthread_t = c_ulong;
 pub type __priority_which_t = c_uint;
 pub type __rlimit_resource_t = c_uint;
@@ -414,6 +417,24 @@ s! {
         __pos: off64_t,
         __state: crate::mbstate_t,
     }
+
+    pub struct pidfd_info {
+        mask: crate::__u64,
+        cgroupid: crate::__u64,
+        pid: crate::__u32,
+        tgid: crate::__u32,
+        ppid: crate::__u32,
+        ruid: crate::__u32,
+        rgid: crate::__u32,
+        euid: crate::__u32,
+        egid: crate::__u32,
+        suid: crate::__u32,
+        sgid: crate::__u32,
+        fsuid: crate::__u32,
+        fsgid: crate::__u32,
+        exit_code: crate::__s32,
+    }
+
 }
 
 impl siginfo_t {
@@ -757,13 +778,31 @@ pub const RTLD_DI_TLS_DATA: c_int = 10;
 pub const SOCK_NONBLOCK: c_int = O_NONBLOCK;
 
 pub const PIDFD_NONBLOCK: c_uint = O_NONBLOCK as c_uint;
-// libc-test failure. To new?
-// pub const PIDFD_THREAD: c_uint = O_EXCL as c_uint;
-
-// libc-test failure. To new?
-// pub const PIDFD_SIGNAL_THREAD: c_uint = 1;
-// pub const PIDFD_SIGNAL_THREAD_GROUP: c_uint = 2;
-// pub const PIDFD_SIGNAL_PROCESS_GROUP: c_uint = 4;
+pub const PIDFD_THREAD: c_uint = O_EXCL as c_uint;
+
+pub const PIDFD_SIGNAL_THREAD: c_uint = 1;
+pub const PIDFD_SIGNAL_THREAD_GROUP: c_uint = 2;
+pub const PIDFD_SIGNAL_PROCESS_GROUP: c_uint = 4;
+
+pub const PIDFD_INFO_PID: c_uint = 1;
+pub const PIDFD_INFO_CREDS: c_uint = 2;
+pub const PIDFD_INFO_CGROUPID: c_uint = 4;
+pub const PIDFD_INFO_EXIT: c_uint = 8;
+
+pub const PIDFD_INFO_SIZE_VER0: c_uint = 64;
+
+const PIDFS_IOCTL_MAGIC: c_uint = 0xFF;
+pub const PIDFD_GET_CGROUP_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 1);
+pub const PIDFD_GET_IPC_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 2);
+pub const PIDFD_GET_MNT_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 3);
+pub const PIDFD_GET_NET_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 4);
+pub const PIDFD_GET_PID_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 5);
+pub const PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 6);
+pub const PIDFD_GET_TIME_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 7);
+pub const PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 8);
+pub const PIDFD_GET_USER_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 9);
+pub const PIDFD_GET_UTS_NAMESPACE: c_uint = _IO(PIDFS_IOCTL_MAGIC, 10);
+pub const PIDFD_GET_INFO: c_uint = _IOWR::<pidfd_info>(PIDFS_IOCTL_MAGIC, 11);
 
 pub const SOL_RXRPC: c_int = 272;
 pub const SOL_PPPOL2TP: c_int = 273;