diff --git a/libc-test/semver/dragonfly.txt b/libc-test/semver/dragonfly.txt
index b035661d59b21..753a72f724a34 100644
--- a/libc-test/semver/dragonfly.txt
+++ b/libc-test/semver/dragonfly.txt
@@ -1391,6 +1391,10 @@ settimeofday
 setutxdb
 setutxent
 sf_hdtr
+shmat
+shmctl
+shmdt
+shmget
 sigaltstack
 sigevent
 siginfo_t
diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 7a620f38861e7..0eaac540101d6 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -18,6 +18,7 @@ pub type uuid_t = ::uuid;
 pub type fsblkcnt_t = u64;
 pub type fsfilcnt_t = u64;
 pub type idtype_t = ::c_uint;
+pub type shmatt_t = ::c_uint;
 
 pub type mqd_t = ::c_int;
 pub type sem_t = *mut sem;
@@ -197,6 +198,18 @@ s! {
     pub struct cpumask_t {
         ary: [u64; 4],
     }
+
+    pub struct shmid_ds {
+        pub shm_perm: ::ipc_perm,
+        pub shm_segsz: ::size_t,
+        pub shm_lpid: ::pid_t,
+        pub shm_cpid: ::pid_t,
+        pub shm_nattch: ::shmatt_t,
+        pub shm_atime: ::time_t,
+        pub shm_dtime: ::time_t,
+        pub shm_ctime: ::time_t,
+        shm_internal: *mut ::c_void,
+    }
 }
 
 s_no_extra_traits! {
@@ -1283,6 +1296,11 @@ extern "C" {
     pub fn sched_setaffinity(pid: ::pid_t, cpusetsize: ::size_t, mask: *const cpu_set_t)
         -> ::c_int;
     pub fn setproctitle(fmt: *const ::c_char, ...);
+
+    pub fn shmget(key: ::key_t, size: ::size_t, shmflg: ::c_int) -> ::c_int;
+    pub fn shmat(shmid: ::c_int, shmaddr: *const ::c_void, shmflg: ::c_int) -> *mut ::c_void;
+    pub fn shmdt(shmaddr: *const ::c_void) -> ::c_int;
+    pub fn shmctl(shmid: ::c_int, cmd: ::c_int, buf: *mut ::shmid_ds) -> ::c_int;
 }
 
 #[link(name = "rt")]
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index 23a5e62603139..f5a2469174f2f 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -71,16 +71,6 @@ s! {
         data: [u32; 4],
     }
 
-    pub struct ipc_perm {
-        pub cuid: ::uid_t,
-        pub cgid: ::gid_t,
-        pub uid: ::uid_t,
-        pub gid: ::gid_t,
-        pub mode: ::mode_t,
-        pub seq: ::c_ushort,
-        pub key: ::key_t,
-    }
-
     pub struct msqid_ds {
         pub msg_perm: ::ipc_perm,
         __unused1: *mut ::c_void,
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index bed49c907ed63..43cebd6842824 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -345,6 +345,16 @@ s! {
         pub dlpi_tls_modid: usize,
         pub dlpi_tls_data: *mut ::c_void,
     }
+
+    pub struct ipc_perm {
+        pub cuid: ::uid_t,
+        pub cgid: ::gid_t,
+        pub uid: ::uid_t,
+        pub gid: ::gid_t,
+        pub mode: ::mode_t,
+        pub seq: ::c_ushort,
+        pub key: ::key_t,
+    }
 }
 
 s_no_extra_traits! {