add PTP_CLOCK_CAPS_RSV_LEN

libc-test/semver/linux.txt

@@ -2252,6 +2252,7 @@ PTHREAD_PRIO_PROTECT
 PTHREAD_PROCESS_PRIVATE
 PTHREAD_PROCESS_SHARED
 PTHREAD_STACK_MIN
+PTP_CLOCK_CAPS_RSV_LEN
 PTP_ENABLE_PPS
 PTP_ENABLE_PPS2
 PTP_EXTTS_REQUEST

src/unix/linux_like/linux/mod.rs

@@ -5625,6 +5625,9 @@ pub const SCHED_FLAG_ALL: ::c_int = SCHED_FLAG_RESET_ON_FORK
 pub const EPIOCSPARAMS: ::Ioctl = 0x40088a01;
 pub const EPIOCGPARAMS: ::Ioctl = 0x80088a02;
 
+// ptp_clock.h
+pub const PTP_CLOCK_CAPS_RSV_LEN: usize = ptp_clock_caps_rsv_len();
+
 const _IOC_NRBITS: u32 = 8;
 const _IOC_TYPEBITS: u32 = 8;
 
@@ -5667,6 +5670,16 @@ const _IOC_TYPESHIFT: u32 = _IOC_NRSHIFT + _IOC_NRBITS;
 const _IOC_SIZESHIFT: u32 = _IOC_TYPESHIFT + _IOC_TYPEBITS;
 const _IOC_DIRSHIFT: u32 = _IOC_SIZESHIFT + _IOC_SIZEBITS;
 
+const fn ptp_clock_caps_rsv_len() -> usize {
+    if cfg!(any(target_arch = "sparc", target_arch = "sparc64")) {
+        12
+    } else if cfg!(any(target_env = "musl", target_env = "ohos")) {
+        13
+    } else {
+        11
+    }
+}
+
 // adapted from https://github.com/torvalds/linux/blob/8a696a29c6905594e4abf78eaafcb62165ac61f1/rust/kernel/ioctl.rs
 
 /// Build an ioctl number, analogous to the C macro of the same name.