diff --git a/libc-test/build.rs b/libc-test/build.rs
index bfe1ed16f395..79c1122c4f84 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -3336,6 +3336,8 @@ fn test_linux(target: &str) {
         "linux/netlink.h",
         // FIXME: requires Linux >= 5.6:
         [!musl]: "linux/openat2.h",
+        "linux/ptp_clock.h",
+        // FIXME: requires Linux >= 5.6:
         [!musl]: "linux/ptrace.h",
         "linux/quota.h",
         "linux/random.h",
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index e818d2dce675..68ea419ed4e3 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -1926,6 +1926,29 @@ PTHREAD_PRIO_PROTECT
 PTHREAD_PROCESS_PRIVATE
 PTHREAD_PROCESS_SHARED
 PTHREAD_STACK_MIN
+PTP_CLOCK_GETCAPS
+PTP_CLOCK_GETCAPS2
+PTP_ENABLE_PPS
+PTP_ENABLE_PPS2
+PTP_EXTTS_REQUEST
+PTP_EXTTS_REQUEST2
+PTP_MAX_SAMPLES
+PTP_PEROUT_REQUEST
+PTP_PEROUT_REQUEST2
+PTP_PF_EXTTS
+PTP_PF_NONE
+PTP_PF_PEROUT
+PTP_PF_PHYSYNC
+PTP_PIN_GETFUNC
+PTP_PIN_GETFUNC2
+PTP_PIN_SETFUNC
+PTP_PIN_SETFUNC2
+PTP_SYS_OFFSET
+PTP_SYS_OFFSET2
+PTP_SYS_OFFSET_EXTENDED
+PTP_SYS_OFFSET_EXTENDED2
+PTP_SYS_OFFSET_PRECISE
+PTP_SYS_OFFSET_PRECISE2
 PTRACE_ATTACH
 PTRACE_CONT
 PTRACE_DETACH
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 4f9ae623a843..a224da63c3bb 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -624,6 +624,73 @@ s! {
         pub val: ::c_int,
     }
 
+    // linux/ptp_clock.h
+    pub struct ptp_clock_time {
+        pub sec: ::__s64,
+        pub nsec: ::__u32,
+        pub reserved: ::__u32,
+    }
+
+    pub struct ptp_clock_caps {
+        pub max_adj: ::c_int,
+        pub n_alarm: ::c_int,
+        pub n_ext_ts: ::c_int,
+        pub n_per_out: ::c_int,
+        pub pps: ::c_int,
+        pub n_pins: ::c_int,
+        pub cross_timestamping: ::c_int,
+        pub adjust_phase: ::c_int,
+        pub rsv: [::c_int; 12],
+    }
+
+    pub struct ptp_extts_request {
+        pub index: ::c_uint,
+        pub flags: ::c_uint,
+        pub rsv: [::c_uint; 2],
+    }
+
+    pub struct ptp_perout_request {
+        pub anonymous_1: __c_anonymous_ptp_perout_request_1,
+        pub period: ptp_clock_time,
+        pub index: ::c_uint,
+        pub flags: ::c_uint,
+        pub anonymous_2: __c_anonymous_ptp_perout_request_2,
+    }
+
+    pub struct ptp_sys_offset {
+        pub n_samples: ::c_uint,
+        pub rsv: [::c_uint; 3],
+        pub ts: [ptp_clock_time; 51],
+    }
+
+    pub struct ptp_sys_offset_extended {
+        pub n_samples: ::c_uint,
+        pub rsv: [::c_uint; 3],
+        pub ts: [[ptp_clock_time; 3]; 25],
+    }
+
+    pub struct ptp_sys_offset_precise {
+        pub device: ptp_clock_time,
+        pub sys_realtime: ptp_clock_time,
+        pub sys_monoraw: ptp_clock_time,
+        pub rsv: [::c_uint; 4],
+    }
+
+    pub struct ptp_pin_desc {
+        pub name: [::c_char; 64],
+        pub index: ::c_uint,
+        pub func: ::c_uint,
+        pub chan: ::c_uint,
+        pub rsv: [::c_uint; 5],
+    }
+
+    pub struct ptp_extts_event {
+        pub t: ptp_clock_time,
+        index: ::c_uint,
+        flags: ::c_uint,
+        rsv: [::c_uint; 2],
+    }
+
     // linux/sctp.h
 
     pub struct sctp_initmsg {
@@ -804,6 +871,19 @@ s_no_extra_traits! {
         pub d_type: ::c_uchar,
         pub d_name: [::c_char; 256],
     }
+
+    // linux/ptp_clock.h
+    #[cfg(libc_union)]
+    pub union __c_anonymous_ptp_perout_request_1 {
+        pub start: ptp_clock_time,
+        pub phase: ptp_clock_time,
+    }
+
+    #[cfg(libc_union)]
+    pub union __c_anonymous_ptp_perout_request_2 {
+        pub on: ptp_clock_time,
+        pub rsv: [::c_uint; 4],
+    }
 }
 
 s_no_extra_traits! {
@@ -3182,6 +3262,34 @@ pub const HWTSTAMP_FILTER_PTP_V2_SYNC: ::c_uint = 13;
 pub const HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: ::c_uint = 14;
 pub const HWTSTAMP_FILTER_NTP_ALL: ::c_uint = 15;
 
+// linux/ptp_clock.h
+pub const PTP_MAX_SAMPLES: ::c_uint = 25;
+
+pub const PTP_CLOCK_GETCAPS: ::c_uint = 0x80503d01;
+pub const PTP_EXTTS_REQUEST: ::c_uint = 0x40103d02;
+pub const PTP_PEROUT_REQUEST: ::c_uint = 0x40383d03;
+pub const PTP_ENABLE_PPS: ::c_uint = 0x40043d04;
+pub const PTP_SYS_OFFSET: ::c_uint = 0x43403d05;
+pub const PTP_PIN_GETFUNC: ::c_uint = 0xc0603d06;
+pub const PTP_PIN_SETFUNC: ::c_uint = 0x40603d07;
+pub const PTP_SYS_OFFSET_PRECISE: ::c_uint = 0xc0403d08;
+pub const PTP_SYS_OFFSET_EXTENDED: ::c_uint = 0xc4c03d09;
+
+pub const PTP_CLOCK_GETCAPS2: ::c_uint = 0x80503d0a;
+pub const PTP_EXTTS_REQUEST2: ::c_uint = 0x40103d0b;
+pub const PTP_PEROUT_REQUEST2: ::c_uint = 0x40383d0c;
+pub const PTP_ENABLE_PPS2: ::c_uint = 0x40043d0d;
+pub const PTP_SYS_OFFSET2: ::c_uint = 0x43403d0e;
+pub const PTP_PIN_GETFUNC2: ::c_uint = 0xc0603d0f;
+pub const PTP_PIN_SETFUNC2: ::c_uint = 0x40603d10;
+pub const PTP_SYS_OFFSET_PRECISE2: ::c_uint = 0xc0403d11;
+pub const PTP_SYS_OFFSET_EXTENDED2: ::c_uint = 0xc4c03d12;
+
+pub const PTP_PF_NONE: ::c_uint = 0;
+pub const PTP_PF_EXTTS: ::c_uint = 1;
+pub const PTP_PF_PEROUT: ::c_uint = 2;
+pub const PTP_PF_PHYSYNC: ::c_uint = 3;
+
 // linux/tls.h
 pub const TLS_GET_RECORD_TYPE: ::c_int = 2;