diff --git a/libc-test/build.rs b/libc-test/build.rs
index 09630c2493b5..d71b3dbc7138 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -4184,6 +4184,13 @@ fn test_linux(target: &str) {
     cfg.skip_const(move |constant| {
         let name = constant.ident();
 
+        // FIXME(linux): Requires newer kernel headers than CI has, even on glibc,
+        // so skip on every libc until CI catches up. OPEN_TREE_NAMESPACE landed in
+        // v7.0, FSCONFIG_CMD_CREATE_EXCL in v6.6.
+        if name == "OPEN_TREE_NAMESPACE" || name == "FSCONFIG_CMD_CREATE_EXCL" {
+            return true;
+        }
+
         // L4Re requires a min stack size of 64k; that isn't defined in uClibc, but
         // somewhere in the core libraries. uClibc wants 16k, but that's not enough.
         if l4re && name == "PTHREAD_STACK_MIN" {
@@ -4206,6 +4213,10 @@ fn test_linux(target: &str) {
                 || name.starts_with("EPOLL")
                 || name.starts_with("F_")
                 || name.starts_with("FALLOC_FL_")
+                || name.starts_with("FSCONFIG_")
+                || name.starts_with("FSMOUNT_")
+                || name.starts_with("FSOPEN_")
+                || name.starts_with("FSPICK_")
                 || name.starts_with("IFLA_")
                 || name.starts_with("KEXEC_")
                 || name.starts_with("MS_")
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 166511bd36a4..2a61653e312c 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -901,6 +901,21 @@ FIONCLEX
 FIONREAD
 FLUSHO
 FOPEN_MAX
+FSCONFIG_CMD_CREATE
+FSCONFIG_CMD_CREATE_EXCL
+FSCONFIG_CMD_RECONFIGURE
+FSCONFIG_SET_BINARY
+FSCONFIG_SET_FD
+FSCONFIG_SET_FLAG
+FSCONFIG_SET_PATH
+FSCONFIG_SET_PATH_EMPTY
+FSCONFIG_SET_STRING
+FSMOUNT_CLOEXEC
+FSOPEN_CLOEXEC
+FSPICK_CLOEXEC
+FSPICK_EMPTY_PATH
+FSPICK_NO_AUTOMOUNT
+FSPICK_SYMLINK_NOFOLLOW
 FS_IOC32_GETFLAGS
 FS_IOC32_GETVERSION
 FS_IOC32_SETFLAGS
@@ -2196,6 +2211,7 @@ OFILL
 OLCUC
 OPEN_TREE_CLOEXEC
 OPEN_TREE_CLONE
+OPEN_TREE_NAMESPACE
 O_ASYNC
 O_DIRECT
 O_DSYNC
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 4c9392ab2434..db58dacf5ff4 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -3106,8 +3106,29 @@ pub const IN_NONBLOCK: c_int = O_NONBLOCK;
 
 // uapi/linux/mount.h
 pub const OPEN_TREE_CLONE: c_uint = 0x01;
+pub const OPEN_TREE_NAMESPACE: c_uint = 0x02;
 pub const OPEN_TREE_CLOEXEC: c_uint = O_CLOEXEC as c_uint;
 
+pub const FSOPEN_CLOEXEC: c_uint = 0x00000001;
+
+pub const FSPICK_CLOEXEC: c_uint = 0x00000001;
+pub const FSPICK_SYMLINK_NOFOLLOW: c_uint = 0x00000002;
+pub const FSPICK_NO_AUTOMOUNT: c_uint = 0x00000004;
+pub const FSPICK_EMPTY_PATH: c_uint = 0x00000008;
+
+pub const FSMOUNT_CLOEXEC: c_uint = 0x00000001;
+
+// enum fsconfig_command
+pub const FSCONFIG_SET_FLAG: c_uint = 0;
+pub const FSCONFIG_SET_STRING: c_uint = 1;
+pub const FSCONFIG_SET_BINARY: c_uint = 2;
+pub const FSCONFIG_SET_PATH: c_uint = 3;
+pub const FSCONFIG_SET_PATH_EMPTY: c_uint = 4;
+pub const FSCONFIG_SET_FD: c_uint = 5;
+pub const FSCONFIG_CMD_CREATE: c_uint = 6;
+pub const FSCONFIG_CMD_RECONFIGURE: c_uint = 7;
+pub const FSCONFIG_CMD_CREATE_EXCL: c_uint = 8;
+
 // uapi/linux/netfilter/nf_tables.h
 pub const NFT_TABLE_MAXNAMELEN: c_int = 256;
 pub const NFT_CHAIN_MAXNAMELEN: c_int = 256;