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255References[1] DDE/DDEKit. URL http://wiki.tudos.org/DDE/DDEKit.[2] E2fsprogs: Ext2/3/4 Filesystem Utilities. URL http://e2fsprogs.sourceforge.net/.[3] fuse-ext2. URL http://sourceforge.net/projects/fuse-ext2/.[4] libguestfs: tools for accessing and modifying virtual machine disk images.URL http://libguestfs.org/.[5] pkgsrc: The NetBSD Packages Collection. URL http://www.pkgsrc.org/.[6] Slirp, the PPP/SLIP-on-terminal emulator. URL http://slirp.sourceforge.net/.[7] thttpd – tiny/turbo/throttling HTTP server. URL http://www.acme.com/software/thttpd/.[8] ZFS Source Tour. URL http://www.opensolaris.org/os/community/zfs/source/.[9] Michael J. Accetta, Robert V. Baron, William J. Bolosky, David B. Golub,Richard F. Rashid, Avadis Tevanian, and Michael Young. 1986. Mach: A NewKernel Foundation for UNIX Development. In: Proceedings of the USENIXSummer Technical Conference, pages 93–113.[10] Thomas E. Anderson, Brian N. Bershad, Edward D. Lazowska, and Henry M.Levy. 1992. Scheduler Activations: Effective Kernel Support for the UserlevelManagement of Parallelism. ACM Transactions on Computer Systems10, no. 1, pages 53–79.[11] Paul Barham, Boris Dragovic, Keir Fraser, Steven Hand, Tim Harris, AlexHo, Rolf Neugebauer, Ian Pratt, and Andrew Warfield. 2003. Xen and the
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Department of Computer Science and
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9PrefaceMeet the new bossSame as th
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11Then there is my dear Xi, who, si
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142.3.3 InterruptsandPreemption....
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164.1.1 Implementation Effort .....
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18Appendix CPatches to the 5.99.48
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20ISALGPLLRULWPMDMIMMUNICOSPICPRRTT
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23List of Figures2.1 Rumpkernelhier
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254.14 Time to execute 5M system ca
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291 IntroductionIn its classic role
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31and application-level drivers. Th
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33We define an anykernel to be an o
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35Our implementation supports rump
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37The project was done in small inc
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392 The Anykernel and Rump KernelsA
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41building on top of the entities m
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43Drivers in a rump kernel remain u
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45 Figure 2.1: Rump kernel hierarc
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47in Section 3.2.3. Whenever discus
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49int rumpns_bpfopen(dev_t, int, in
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51Figure 2.4: Client types illustra
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53while the application logic still
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55We must solve the lack of a rump
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572.3.1 Kernel threadsUp until now,
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59void *pool_cache_get_paddr(pool_c
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612.3.4 An ExampleWe present an exa
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63Figure 2.6: Providing memory mapp
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65The straightforward use of existi
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68We identified three obstacles for
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70for loadable kernel modules (disc
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72e.g. the routine for mapping a pr
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743.2.1 C Symbol NamespacesIn the r
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773.2.3 The Hypercall InterfaceThe
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79void rumpuser_mutex_init(struct r
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81The Benefit of a printf-like Hype
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83voidrump_schedule(){struct lwp *l
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85108seconds64201CPU2CPUnativerumpF
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87voidschedule_cpu(){struct lwp *lw
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89voidunschedule_cpu(){struct lwp *
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91is bound to a certain rump kernel
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93interrupts from hardware clock in
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95to secondary storage so that memo
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973. Accept that memory remapping s
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99implementations for these allocat
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101rump kernel memory limitrelative
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103acquire it. Since there are no o
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1053.5.1 Passive Serialization Tech
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1072. Check that the system call ha
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1095. In case we saw threads inside
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1115 4.86duration (s)4322.963.293.6
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113any functions they desire. We de
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115off_trump___sysimpl_lseek(int fd
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117[ .... ]2194: e8 fc ff ff ff cal
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119intRUMP_VOP_READ(struct vnode *v
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121boothowto variable. Since there
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123Due to how etfs is implemented a
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125source loading linking initiated
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127The bootstrap procedure iterates
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129void *handle;const struct modinf
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131opposed to the host’s dynamic
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133sys/arch/x86/include/pmap.h:#def
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135acalltokobj_renamespace() after
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137levelRUMP_COMPONENT_KERNRUMP_COM
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139An example of a component file i
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141Figure 3.21: Networking options
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143We use shared memory provided by
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145Our implementation is different
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147the object the data belongs to (
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1493.10 Hardware Device Drivers: A
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151golem> rump_server -lrumpvfs -lr
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153the audio driver attaches to an
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155can be accomplished with a hardw
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157host probe:uhub5 at uhub2 port 1
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1593.11.1 Mount Utilities and File
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161intp2k_node_read(struct puffs_us
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163Figure 3.33: Remote client archi
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165function interfaces for system c
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1673.12.4 Communication ProtocolThe
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169Request Arguments Response Descr
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171Host syscallrump syscall5. the l
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173Figure 3.35: System call hijacki
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175Note: the categories are not mut
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177• The closefrom() routine clos
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179pid_trumpclient_fork(){pid_t rv;
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18125remote (unix domain)local20tim
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183relegation has on the implementa
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1854 EvaluationThis chapter evaluat
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1875040kLoC3020100rump Xen UML Alph
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189build.sh rumptestWhen rump kerne
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191for NTFS. The benefit is that fi
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193originalrump kernel backendFFS S
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1954.3.1 Non-native HostingWhen hos
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197hypervisor, it is possible to co
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199fromvers () {echosed -n ’1{s/\
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2014.4 Security: A Case Study with
Page 205 and 206: 203be the platform hardware or a hy
Page 207 and 208: 205==11956== 1,048 (24 direct, 1,02
Page 209 and 210: 2072. Activity on the host, such as
Page 211 and 212: 209Standard rules still apply, and
Page 213 and 214: 211MultiplicityMultiplicity means i
Page 215 and 216: 213of tests that have to be written
Page 217 and 218: 215test program crashed, autolistin
Page 219 and 220: 2174.5.5 Development ExperiencesSin
Page 221 and 222: 2194.6.1 Memory OverheadWe define m
Page 223 and 224: 221platform version kernel boot log
Page 225 and 226: 223#!/bin/shRUMP_COMP=’-lrumpnet
Page 227 and 228: 22554runtime (s)3210‘ 2.47 sec‘
Page 229 and 230: 227RTT (ms)10UDP "ping"8642050 100
Page 231 and 232: 229• Copying the large file was m
Page 233 and 234: 231807060seconds50403020100bigcptre
Page 235 and 236: 233ping rtt (us)1201008060402001172
Page 237 and 238: 235We evaluated the portability of
Page 239 and 240: 2375 Related WorkThis chapter surve
Page 241 and 242: 239the same too: if one component i
Page 243 and 244: 241environment without the interfac
Page 245 and 246: 2435.7 Inter-OS Kernel CodeThe comm
Page 247 and 248: 245NDISNDIS stands for “Network D
Page 249 and 250: 5.9 Testing and Development247Sun
Page 251 and 252: 2496 ConclusionsWe set out with the
Page 253 and 254: 251The key performance characterist
Page 255: 253translation may be needed when p
Page 259 and 260: 257[20] Charles D. Cranor. 1998. De
Page 261 and 262: 259ments. In: Proceedings of the Wo
Page 263 and 264: 261[58] Steve R. Kleiman. 1986. Vno
Page 265 and 266: 263[76] Luke Mewburn. April 2009. P
Page 267 and 268: 265[97] The Transport Layer Securit
Page 269 and 270: 267[115] Junfeng Yang, Can Sar, Pau
Page 271 and 272: A-1Appendix AManual Pagesrump.dhcpc
Page 273 and 274: A-3RUMP.HALT(1) NetBSD General Comm
Page 275 and 276: A-5RUMP_SERVER(1) NetBSD General Co
Page 281 and 282: A-11SHMIF_DUMPBUS(1) NetBSD General
Page 283 and 284: A-13P2K(3) NetBSD Library Functions
Page 285 and 286: A-15RUMP(3) NetBSD Library Function
Page 291 and 292: A-21RUMP_ETFS(3) NetBSD Library Fun
Page 293 and 294: A-23RUMP_LWPROC(3) NetBSD Library F
Page 295 and 296: A-25RUMP_LWPROC(3) NetBSD Library F
Page 297 and 298: A-27RUMPCLIENT(3) NetBSD Library Fu
Page 303 and 304: A-33RUMPHIJACK(3) NetBSD Library Fu
Page 305 and 306: A-35RUMPHIJACK(3) NetBSD Library Fu
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A-37RUMPUSER(3) NetBSD Library Func
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A-39UKFS(3) NetBSD Library Function
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A-47SHMIF(4) NetBSD Kernel Interfac
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A-49VIRT(4) NetBSD Kernel Interface
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A-51RUMP_SP(7) NetBSD Miscellaneous
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B-1Appendix BTutorial on Distribute
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B-3The URL the server listens to is
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B-5given, and halt the server. We a
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B-7While there are multiple steps w
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B-9golem> disklabel -re usb.img# us
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B-11unencrypted partition to the im
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B-13offer the params file for downl
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B-15B.3 NetworkingThis section expl
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B-17bridge as you like. For example
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B-19golem> rump.ping www.NetBSD.org
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B-21Now we can use Firefox just lik
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B-23Now, we need to start a rump se
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B-25the behavior by setting the RUM
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B-27# This script starts a rump ker
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B-29B.5.2NFS Client#!/bin/sh## This
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B-31is running on your host. You ca
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C-1Appendix CPatches to the 5.99.48
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C-3{+ int rfflags = 0;++ if (!share
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C-5return error;}#endif@@ -525,13 +
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