diff --git a/kernel/Makefile b/kernel/Makefile
index dce5c0e2..789d3b89 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -95,6 +95,7 @@ fs/full.o \
fsfunc.o \
fs/kram.o \
fs/null.o \
+fs/random.o \
fs/user.o \
fs/util.o \
fs/zero.o \
diff --git a/kernel/fs/random.cpp b/kernel/fs/random.cpp
new file mode 100644
index 00000000..fc17b6e1
--- /dev/null
+++ b/kernel/fs/random.cpp
@@ -0,0 +1,106 @@
+/*******************************************************************************
+
+ Copyright(C) Jonas 'Sortie' Termansen 2015.
+
+ This file is part of Sortix.
+
+ Sortix is free software: you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation, either version 3 of the License, or (at your option) any later
+ version.
+
+ Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ details.
+
+ You should have received a copy of the GNU General Public License along with
+ Sortix. If not, see .
+
+ fs/random.cpp
+ Random device.
+
+*******************************************************************************/
+
+#include
+
+#include
+#include
+#include
+
+#include
+
+#include
+#include
+
+#include "random.h"
+
+namespace Sortix {
+
+DevRandom::DevRandom(dev_t dev, ino_t ino, uid_t owner, gid_t group, mode_t mode)
+{
+ inode_type = INODE_TYPE_STREAM;
+ if ( !dev )
+ dev = (dev_t) this;
+ if ( !ino )
+ ino = (ino_t) this;
+ this->type = S_IFCHR;
+ this->stat_uid = owner;
+ this->stat_gid = group;
+ this->stat_mode = (mode & S_SETABLE) | this->type;
+ this->stat_size = 0;
+ this->stat_blksize = 1;
+ this->dev = dev;
+ this->ino = ino;
+}
+
+DevRandom::~DevRandom()
+{
+}
+
+int DevRandom::truncate(ioctx_t* /*ctx*/, off_t /*length*/)
+{
+ return 0;
+}
+
+off_t DevRandom::lseek(ioctx_t* /*ctx*/, off_t offset, int /*whence*/)
+{
+ return offset;
+}
+
+ssize_t DevRandom::read(ioctx_t* ctx, uint8_t* buf, size_t count)
+{
+ size_t sofar = 0;
+ while ( count )
+ {
+ unsigned char buffer[512];
+ size_t amount = count;
+ if ( sizeof(buffer) < amount )
+ amount = sizeof(buffer);
+ arc4random_buf(buffer, amount);
+ if ( !ctx->copy_to_dest(buf, buffer, amount) )
+ return sofar ? sofar : -1;
+ buf += amount;
+ count -= amount;
+ sofar += amount;
+ }
+ return (ssize_t) sofar;
+}
+
+ssize_t DevRandom::pread(ioctx_t* ctx, uint8_t* buf, size_t count, off_t /*off*/)
+{
+ return read(ctx, buf, count);
+}
+
+ssize_t DevRandom::write(ioctx_t* /*ctx*/, const uint8_t* /*buf*/, size_t count)
+{
+ return count;
+}
+
+ssize_t DevRandom::pwrite(ioctx_t* /*ctx*/, const uint8_t* /*buf*/, size_t count,
+ off_t /*off*/)
+{
+ return count;
+}
+
+} // namespace Sortix
diff --git a/kernel/fs/random.h b/kernel/fs/random.h
new file mode 100644
index 00000000..fa230018
--- /dev/null
+++ b/kernel/fs/random.h
@@ -0,0 +1,48 @@
+/*******************************************************************************
+
+ Copyright(C) Jonas 'Sortie' Termansen 2015.
+
+ This file is part of Sortix.
+
+ Sortix is free software: you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation, either version 3 of the License, or (at your option) any later
+ version.
+
+ Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ details.
+
+ You should have received a copy of the GNU General Public License along with
+ Sortix. If not, see .
+
+ fs/random.h
+ Random device.
+
+*******************************************************************************/
+
+#ifndef SORTIX_FS_RANDOM_H
+#define SORTIX_FS_RANDOM_H
+
+#include
+
+namespace Sortix {
+
+class DevRandom : public AbstractInode
+{
+public:
+ DevRandom(dev_t dev, ino_t ino, uid_t owner, gid_t group, mode_t mode);
+ virtual ~DevRandom();
+ virtual int truncate(ioctx_t* ctx, off_t length);
+ virtual off_t lseek(ioctx_t* ctx, off_t offset, int whence);
+ virtual ssize_t read(ioctx_t* ctx, uint8_t* buf, size_t count);
+ virtual ssize_t pread(ioctx_t* ctx, uint8_t* buf, size_t count, off_t off);
+ virtual ssize_t write(ioctx_t* ctx, const uint8_t* buf, size_t count);
+ virtual ssize_t pwrite(ioctx_t* ctx, const uint8_t* buf, size_t count,
+ off_t off);
+};
+
+} // namespace Sortix
+
+#endif
diff --git a/kernel/kernel.cpp b/kernel/kernel.cpp
index e6488930..65c21945 100644
--- a/kernel/kernel.cpp
+++ b/kernel/kernel.cpp
@@ -73,6 +73,7 @@
#include "fs/full.h"
#include "fs/kram.h"
#include "fs/null.h"
+#include "fs/random.h"
#include "fs/zero.h"
#include "gpu/bga/bga.h"
#include "initrd.h"
@@ -463,6 +464,16 @@ static void BootThread(void* /*user*/)
if ( LinkInodeInDir(&ctx, slashdev, "full", full_device) != 0 )
Panic("Unable to link /dev/full to the full device.");
+ // Register the random device as /dev/random.
+ Ref random_device(new DevRandom(slashdev->dev, (ino_t) 0, (uid_t) 0,
+ (gid_t) 0, (mode_t) 0666));
+ if ( !random_device )
+ Panic("Could not allocate a random device");
+ if ( LinkInodeInDir(&ctx, slashdev, "random", random_device) != 0 )
+ Panic("Unable to link /dev/random to the random device.");
+ if ( LinkInodeInDir(&ctx, slashdev, "urandom", random_device) != 0 )
+ Panic("Unable to link /dev/urandom to the random device.");
+
// Initialize the COM ports.
COM::Init("/dev", slashdev);