diff --git a/drivers/e1000d/Cargo.toml b/drivers/e1000d/Cargo.toml
index ec8c45e..dc01208 100644
--- a/drivers/e1000d/Cargo.toml
+++ b/drivers/e1000d/Cargo.toml
@@ -9,3 +9,7 @@ event = { path = "../../crates/event/" }
 io = { path = "../../crates/io/" }
 netutils = { path = "../../programs/netutils/" }
 redox_syscall = { path = "../../syscall/" }
+
+[replace]
+"libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/drivers/rtl8168d/Cargo.toml b/drivers/rtl8168d/Cargo.toml
index e72a130..dbc13b9 100644
--- a/drivers/rtl8168d/Cargo.toml
+++ b/drivers/rtl8168d/Cargo.toml
@@ -9,3 +9,7 @@ event = { path = "../../crates/event/" }
 io = { path = "../../crates/io/" }
 netutils = { path = "../../programs/netutils/" }
 redox_syscall = { path = "../../syscall/" }
+
+[replace]
+"libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/kernel/scheme/pipe.rs b/kernel/scheme/pipe.rs
index 30d0bd5..c608ed5 100644
--- a/kernel/scheme/pipe.rs
+++ b/kernel/scheme/pipe.rs
@@ -6,7 +6,7 @@ use scheme::{AtomicSchemeId, ATOMIC_SCHEMEID_INIT};
 
 use sync::WaitCondition;
 use syscall::error::{Error, Result, EAGAIN, EBADF, EINVAL, EPIPE};
-use syscall::flag::{F_GETFL, F_SETFL, O_CLOEXEC, O_NONBLOCK};
+use syscall::flag::{F_GETFL, F_SETFL, O_ACCMODE, O_CLOEXEC, O_NONBLOCK};
 use syscall::scheme::Scheme;
 
 /// Pipes list
@@ -155,7 +155,7 @@ impl PipeRead {
         match cmd {
             F_GETFL => Ok(self.flags.load(Ordering::SeqCst)),
             F_SETFL => {
-                self.flags.store(arg, Ordering::SeqCst);
+                self.flags.store(arg & ! O_ACCMODE, Ordering::SeqCst);
                 Ok(0)
             },
             _ => Err(Error::new(EINVAL))
@@ -229,7 +229,7 @@ impl PipeWrite {
         match cmd {
             F_GETFL => Ok(self.flags.load(Ordering::SeqCst)),
             F_SETFL => {
-                self.flags.store(arg, Ordering::SeqCst);
+                self.flags.store(arg & ! O_ACCMODE, Ordering::SeqCst);
                 Ok(0)
             },
             _ => Err(Error::new(EINVAL))
diff --git a/programs/orbutils b/programs/orbutils
index 1b92d72..81bde2c 160000
--- a/programs/orbutils
+++ b/programs/orbutils
@@ -1 +1 @@
-Subproject commit 1b92d72f5b4a2c693be659ee56708076fea44dc0
+Subproject commit 81bde2c5484eb8d2345194a60f8fd556f2c54853
diff --git a/programs/userutils b/programs/userutils
index ba16f79..6305f22 160000
--- a/programs/userutils
+++ b/programs/userutils
@@ -1 +1 @@
-Subproject commit ba16f79ada8ef33960007143004f59e15c7610c4
+Subproject commit 6305f222ad6c1b00fce6930b7df5cb2a659df8b4
diff --git a/rust b/rust
index 73f24d4..2e5c821 160000
--- a/rust
+++ b/rust
@@ -1 +1 @@
-Subproject commit 73f24d47dee367563019b18ac5089b91eded2753
+Subproject commit 2e5c821619c7b62ec46c8a4f90ead4e59fb6c36e
diff --git a/schemes/ethernetd/Cargo.toml b/schemes/ethernetd/Cargo.toml
index 6e10ca0..abeeaf3 100644
--- a/schemes/ethernetd/Cargo.toml
+++ b/schemes/ethernetd/Cargo.toml
@@ -6,3 +6,7 @@ version = "0.1.0"
 event = { path = "../../crates/event/" }
 netutils = { path = "../../programs/netutils/" }
 redox_syscall = { path = "../../syscall/" }
+
+[replace]
+"libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/schemes/ipd/Cargo.toml b/schemes/ipd/Cargo.toml
index 23d2f3d..4400fc5 100644
--- a/schemes/ipd/Cargo.toml
+++ b/schemes/ipd/Cargo.toml
@@ -6,3 +6,7 @@ version = "0.1.0"
 event = { path = "../../crates/event/" }
 netutils = { path = "../../programs/netutils/" }
 redox_syscall = { path = "../../syscall/" }
+
+[replace]
+"libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/schemes/redoxfs b/schemes/redoxfs
index 8449c5b..8a22d96 160000
--- a/schemes/redoxfs
+++ b/schemes/redoxfs
@@ -1 +1 @@
-Subproject commit 8449c5b6ad87ced01bcb82627cb85a8981337210
+Subproject commit 8a22d9666927cd2d7040711b7db4eb4dcf73fc48
diff --git a/schemes/tcpd/Cargo.toml b/schemes/tcpd/Cargo.toml
index f4e7c5b..1f2b87e 100644
--- a/schemes/tcpd/Cargo.toml
+++ b/schemes/tcpd/Cargo.toml
@@ -10,3 +10,4 @@ redox_syscall = { path = "../../syscall/" }
 
 [replace]
 "libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/schemes/udpd/Cargo.toml b/schemes/udpd/Cargo.toml
index 67ef8fc..20675e7 100644
--- a/schemes/udpd/Cargo.toml
+++ b/schemes/udpd/Cargo.toml
@@ -10,3 +10,4 @@ redox_syscall = { path = "../../syscall/" }
 
 [replace]
 "libc:0.2.17" = { git = "https://github.com/rust-lang/libc.git" }
+"rand:0.3.14" = { git = "https://github.com/rust-lang-nursery/rand.git" }
diff --git a/syscall b/syscall
index f48cbf2..cd6f7c2 160000
--- a/syscall
+++ b/syscall
@@ -1 +1 @@
-Subproject commit f48cbf22f3cf85e73f2dd778c3764ad430cd30e8
+Subproject commit cd6f7c219cc295e9d0b9f5068b107fd13f12af90