Merge bk://jfs.bkbits.net/linux-2.5

into home.transmeta.com:/home/torvalds/v2.5/linux

Makefile

@@ -164,6 +164,9 @@ export srctree objtree
 
 SUBDIRS		:= init kernel mm fs ipc lib drivers sound net security
 
+# The temporary file to save gcc -MD generated dependencies must not
+# contain a comma
+depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
 
 noconfig_targets := xconfig menuconfig config oldconfig randconfig \
 		    defconfig allyesconfig allnoconfig allmodconfig \
@@ -271,7 +274,7 @@ boot: vmlinux
 
 vmlinux-objs := $(HEAD) $(INIT) $(CORE_FILES) $(LIBS) $(DRIVERS) $(NETWORKS)
 
-quiet_cmd_link_vmlinux = LD     $@
+quiet_cmd_link_vmlinux = LD      $@
 cmd_link_vmlinux = $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $(HEAD) $(INIT) \
 		--start-group \
 		$(CORE_FILES) \
@@ -318,8 +321,12 @@ prepare: include/linux/version.h include/asm include/config/MARKER
 #	This can be used by arch/$ARCH/Makefile to preprocess
 #	their vmlinux.lds.S file
 
-arch/$(ARCH)/vmlinux.lds.s: arch/$(ARCH)/vmlinux.lds.S
-	$(CPP) $(CPPFLAGS) $(CPPFLAGS_$@) -P -C -U$(ARCH) $< -o $@
+AFLAGS_vmlinux.lds.o += -P -C -U$(ARCH)
+
+arch/$(ARCH)/vmlinux.lds.s: arch/$(ARCH)/vmlinux.lds.S FORCE
+	$(call if_changed_dep,as_s_S)
+
+targets += arch/$(ARCH)/vmlinux.lds.s
 
 # Single targets
 # ---------------------------------------------------------------------------
@@ -782,13 +789,34 @@ endif # ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
 # FIXME Should go into a make.lib or something 
 # ===========================================================================
 
+a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(NOSTDINC_FLAGS) \
+	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
+
+quiet_cmd_as_s_S = CPP     $(echo_target)
+cmd_as_s_S       = $(CPP) $(a_flags)   -o $@ $< 
+
 # read all saved command lines
 
-cmd_files := $(wildcard .*.cmd)
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+
 ifneq ($(cmd_files),)
   include $(cmd_files)
 endif
 
+# execute the command and also postprocess generated .d dependencies
+# file
+
+if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
+		          $(filter-out $(cmd_$(1)),$(cmd_$@))\
+			  $(filter-out $(cmd_$@),$(cmd_$(1)))),\
+	@set -e; \
+	$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))';) \
+	$(cmd_$(1)); \
+	$(TOPDIR)/scripts/fixdep $(depfile) $@ $(TOPDIR) '$(cmd_$(1))' > $(@D)/.$(@F).tmp; \
+	rm -f $(depfile); \
+	mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
+
 # Usage: $(call if_changed_rule,foo)
 # will check if $(cmd_foo) changed, or any of the prequisites changed,
 # and if so will execute $(rule_foo)

Rules.make

@@ -174,7 +174,7 @@ c_flags = -Wp,-MD,$(depfile) $(CFLAGS) $(NOSTDINC_FLAGS) \
 # files (fix-dep filters them), so touch modversions.h if any of the .ver
 # files changes
 
-quiet_cmd_cc_ver_c = MKVER  include/linux/modules/$(RELDIR)/$*.ver
+quiet_cmd_cc_ver_c = MKVER   include/linux/modules/$(RELDIR)/$*.ver
 cmd_cc_ver_c = $(CPP) $(c_flags) $< | $(GENKSYMS) $(genksyms_smp_prefix) \
 		 -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp
 
@@ -271,26 +271,26 @@ c_flags = -Wp,-MD,$(depfile) $(CFLAGS) $(NOSTDINC_FLAGS) \
 	  -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) \
 	  $(export_flags) 
 
-quiet_cmd_cc_s_c = CC     $(echo_target)
+quiet_cmd_cc_s_c = CC      $(echo_target)
 cmd_cc_s_c       = $(CC) $(c_flags) -S -o $@ $< 
 
 %.s: %.c FORCE
 	$(call if_changed_dep,cc_s_c)
 
-quiet_cmd_cc_i_c = CPP    $(echo_target)
+quiet_cmd_cc_i_c = CPP     $(echo_target)
 cmd_cc_i_c       = $(CPP) $(c_flags)   -o $@ $<
 
 %.i: %.c FORCE
 	$(call if_changed_dep,cc_i_c)
 
-quiet_cmd_cc_o_c = CC     $(echo_target)
+quiet_cmd_cc_o_c = CC      $(echo_target)
 cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
 
 %.o: %.c FORCE
 	$(call if_changed_dep,cc_o_c)
 
-quiet_cmd_cc_lst_c = '  Generating $(echo_target)'
-cmd_cc_lst_c     = $(CC) $(c_flags) -g -c -o $*.o $< && $(TOPDIR)/scripts/makelst $*.o $(TOPDIR)/System.map $(OBJDUMP) > $@
+quiet_cmd_cc_lst_c = MKLST   $(echo_target)
+cmd_cc_lst_c       = $(CC) $(c_flags) -g -c -o $*.o $< && $(TOPDIR)/scripts/makelst $*.o $(TOPDIR)/System.map $(OBJDUMP) > $@
 
 %.lst: %.c FORCE
 	$(call if_changed_dep,cc_lst_c)
@@ -306,13 +306,13 @@ $(real-objs-m:.o=.s): modkern_aflags := $(AFLAGS_MODULE)
 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(NOSTDINC_FLAGS) \
 	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
 
-quiet_cmd_as_s_S = CPP    $(echo_target)
+quiet_cmd_as_s_S = CPP     $(echo_target)
 cmd_as_s_S       = $(CPP) $(a_flags)   -o $@ $< 
 
 %.s: %.S FORCE
 	$(call if_changed_dep,as_s_S)
 
-quiet_cmd_as_o_S = AS     $(echo_target)
+quiet_cmd_as_o_S = AS      $(echo_target)
 cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<
 
 %.o: %.S FORCE
@@ -330,7 +330,7 @@ $(sort $(subdir-obj-y)): sub_dirs ;
 # Rule to compile a set of .o files into one .o file
 #
 ifdef O_TARGET
-quiet_cmd_link_o_target = LD     $(echo_target)
+quiet_cmd_link_o_target = LD      $(echo_target)
 # If the list of objects to link is empty, just create an empty O_TARGET
 cmd_link_o_target = $(if $(strip $(obj-y)),\
 		      $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) -r -o $@ $(filter $(obj-y), $^),\
@@ -346,7 +346,7 @@ endif # O_TARGET
 # Rule to compile a set of .o files into one .a file
 #
 ifdef L_TARGET
-quiet_cmd_link_l_target = AR     $(echo_target)
+quiet_cmd_link_l_target = AR      $(echo_target)
 cmd_link_l_target = rm -f $@; $(AR) $(EXTRA_ARFLAGS) rcs $@ $(obj-y)
 
 $(L_TARGET): $(obj-y) FORCE
@@ -359,7 +359,7 @@ endif
 # Rule to link composite objects
 #
 
-quiet_cmd_link_multi = LD     $(echo_target)
+quiet_cmd_link_multi = LD      $(echo_target)
 cmd_link_multi = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) -r -o $@ $(filter $($(basename $@)-objs),$^)
 
 # We would rather have a list of rules like
@@ -381,7 +381,7 @@ host-progs-single     := $(foreach m,$(host-progs),$(if $($(m)-objs),,$(m)))
 host-progs-multi      := $(foreach m,$(host-progs),$(if $($(m)-objs),$(m)))
 host-progs-multi-objs := $(foreach m,$(host-progs-multi),$($(m)-objs))
 
-quiet_cmd_host_cc__c  = HOSTCC $(echo_target)
+quiet_cmd_host_cc__c  = HOSTCC  $(echo_target)
 cmd_host_cc__c        = $(HOSTCC) -Wp,-MD,$(depfile) \
 			$(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
 			$(HOST_LOADLIBES) -o $@ $<
@@ -389,14 +389,14 @@ cmd_host_cc__c        = $(HOSTCC) -Wp,-MD,$(depfile) \
 $(host-progs-single): %: %.c FORCE
 	$(call if_changed_dep,host_cc__c)
 
-quiet_cmd_host_cc_o_c = HOSTCC $(echo_target)
+quiet_cmd_host_cc_o_c = HOSTCC  $(echo_target)
 cmd_host_cc_o_c       = $(HOSTCC) -Wp,-MD,$(depfile) \
 			$(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
 
 $(host-progs-multi-objs): %.o: %.c FORCE
 	$(call if_changed_dep,host_cc_o_c)
 
-quiet_cmd_host_cc__o  = HOSTLD $(echo_target)
+quiet_cmd_host_cc__o  = HOSTLD  $(echo_target)
 cmd_host_cc__o        = $(HOSTCC) $(HOSTLDFLAGS) -o $@ $($@-objs) \
 			$(HOST_LOADLIBES)
 
@@ -411,9 +411,11 @@ endif # ! fastdep
 # Shipped files
 # ===========================================================================
 
+quiet_cmd_shipped = SHIPPED $(echo_target)
+cmd_shipped = cat $< > $@
+
 %:: %_shipped
-	@echo '  CP     $(echo_target)'
-	@cp $< $@
+	$(call cmd,shipped)
 
 # Commands useful for building a boot image
 # ===========================================================================
@@ -421,7 +423,7 @@ endif # ! fastdep
 #	Use as following:
 #
 #	target: source(s) FORCE
-#		$(if_changed,ld/objcopy)
+#		$(if_changed,ld/objcopy/gzip)
 #
 #	and add target to EXTRA_TARGETS so that we know we have to
 #	read in the saved command line
@@ -429,20 +431,20 @@ endif # ! fastdep
 # Linking
 # ---------------------------------------------------------------------------
 
-quiet_cmd_ld = LD     $(echo_target)
+quiet_cmd_ld = LD      $(echo_target)
 cmd_ld = $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$@) \
 	       $(filter-out FORCE,$^) -o $@ 
 
 # Objcopy
 # ---------------------------------------------------------------------------
 
-quiet_cmd_objcopy = OBJCPY $(echo_target)
+quiet_cmd_objcopy = OBJCOPY $(echo_target)
 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $< $@
 
 # Gzip
 # ---------------------------------------------------------------------------
 
-quiet_cmd_gzip = GZIP   $(echo_target)
+quiet_cmd_gzip = GZIP    $(echo_target)
 cmd_gzip = gzip -f -9 < $< > $@
 
 # ===========================================================================

arch/alpha/Makefile

@@ -128,9 +128,6 @@ archmrproper:
 
 vmlinux: arch/alpha/vmlinux.lds.s
 
-arch/$(ARCH)/vmlinux.lds.s: arch/$(ARCH)/vmlinux.lds.S
-	$(CPP) $(CPPFLAGS) $(CPPFLAGS_$@) -D__ASSEMBLY__ -P -C -U$(ARCH) $< -o $@
-
 bootpfile:
 	@$(MAKEBOOT) bootpfile
 

arch/alpha/kernel/init_task.c

@@ -8,7 +8,7 @@
 
 static struct fs_struct init_fs = INIT_FS;
 static struct files_struct init_files = INIT_FILES;
-static struct signal_struct init_signals = INIT_SIGNALS;
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 struct mm_struct init_mm = INIT_MM(init_mm);
 struct task_struct init_task = INIT_TASK(init_task);
 

arch/alpha/kernel/pci.c

@@ -343,7 +343,7 @@ pcibios_fixup_pbus_ranges(struct pci_bus * bus,
 }
 
 int
-pcibios_enable_device(struct pci_dev *dev)
+pcibios_enable_device(struct pci_dev *dev, int mask)
 {
 	/* Nothing to do, since we enable all devices at startup.  */
 	return 0;

arch/alpha/kernel/signal.c

@@ -592,108 +592,19 @@ static int
 do_signal(sigset_t *oldset, struct pt_regs * regs, struct switch_stack * sw,
 	  unsigned long r0, unsigned long r19)
 {
+	siginfo_t info;
+	int signr;
 	unsigned long single_stepping = ptrace_cancel_bpt(current);
 
 	if (!oldset)
 		oldset = &current->blocked;
 
-	while (1) {
-		unsigned long signr;
-		struct k_sigaction *ka;
-		siginfo_t info;
-
-		spin_lock_irq(&current->sigmask_lock);
-		signr = dequeue_signal(&current->blocked, &info);
-		spin_unlock_irq(&current->sigmask_lock);
-
-		if (!signr)
-			break;
-
-		if ((current->ptrace & PT_PTRACED) && signr != SIGKILL) {
-			/* Let the debugger run.  */
-			current->exit_code = signr;
-			current->state = TASK_STOPPED;
-			notify_parent(current, SIGCHLD);
-			schedule();
-			single_stepping |= ptrace_cancel_bpt(current);
-
-			/* We're back.  Did the debugger cancel the sig?  */
-			if (!(signr = current->exit_code))
-				continue;
-			current->exit_code = 0;
-
-			/* The debugger continued.  Ignore SIGSTOP.  */
-			if (signr == SIGSTOP)
-				continue;
-
-			/* Update the siginfo structure.  Is this good?  */
-			if (signr != info.si_signo) {
-				info.si_signo = signr;
-				info.si_errno = 0;
-				info.si_code = SI_USER;
-				info.si_pid = current->parent->pid;
-				info.si_uid = current->parent->uid;
-			}
-
-			/* If the (new) signal is now blocked, requeue it.  */
-			if (sigismember(&current->blocked, signr)) {
-				send_sig_info(signr, &info, current);
-				continue;
-			}
-		}
-
-		ka = &current->sig->action[signr-1];
-		if (ka->sa.sa_handler == SIG_IGN) {
-			if (signr != SIGCHLD)
-				continue;
-			/* Check for SIGCHLD: it's special.  */
-			while (sys_wait4(-1, NULL, WNOHANG, NULL) > 0)
-				/* nothing */;
-			continue;
-		}
-
-		if (ka->sa.sa_handler == SIG_DFL) {
-			int exit_code = signr & 0x7f;
-
-			/* Init gets no signals it doesn't want.  */
-			if (current->pid == 1)
-				continue;
-
-			switch (signr) {
-			case SIGCONT: case SIGCHLD: case SIGWINCH:
-				continue;
-
-			case SIGTSTP: case SIGTTIN: case SIGTTOU:
-				if (is_orphaned_pgrp(current->pgrp))
-					continue;
-				/* FALLTHRU */
-
-			case SIGSTOP:
-				current->state = TASK_STOPPED;
-				current->exit_code = signr;
-				if (!(current->parent->sig->action[SIGCHLD-1]
-				      .sa.sa_flags & SA_NOCLDSTOP))
-					notify_parent(current, SIGCHLD);
-				schedule();
-				single_stepping |= ptrace_cancel_bpt(current);
-				continue;
-
-			case SIGQUIT: case SIGILL: case SIGTRAP:
-			case SIGABRT: case SIGFPE: case SIGSEGV:
-			case SIGBUS: case SIGSYS: case SIGXCPU: case SIGXFSZ:
-				if (do_coredump(signr, regs))
-					exit_code |= 0x80;
-				/* FALLTHRU */
-
-			default:
-				lock_kernel();
-				sig_exit(signr, exit_code, &info);
-				/* NOTREACHED */
-			}
-			continue;
-		}
+	signr = get_signal_to_deliver(&info, regs);
 
+	if (signr > 0) {
 		/* Whee!  Actually deliver the signal.  */
+		struct k_sigaction *ka = &current->sig->action[signr-1];
+
 		if (r0) syscall_restart(r0, r19, regs, ka);
 		handle_signal(signr, ka, &info, oldset, regs, sw);
 		if (single_stepping) 

arch/i386/kernel/entry.S

@@ -759,6 +759,9 @@ ENTRY(sys_call_table)
 	.long sys_io_getevents
 	.long sys_io_submit
 	.long sys_io_cancel
+	.long sys_ni_syscall	/* 250 */	/* sys_alloc_hugepages */
+	.long sys_ni_syscall			/* sys_free_hugepages */
+	.long sys_exit_group
 
 	.rept NR_syscalls-(.-sys_call_table)/4
 		.long sys_ni_syscall

arch/ia64/Makefile

@@ -96,9 +96,6 @@ MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
 
 vmlinux: arch/$(ARCH)/vmlinux.lds.s
 
-arch/$(ARCH)/vmlinux.lds.s: arch/$(ARCH)/vmlinux.lds.S
-	$(CPP) $(CPPFLAGS) $(CPPFLAGS_$@) -D__ASSEMBLY__ -P -C -U$(ARCH) $< -o $@
-
 compressed: vmlinux
 	$(OBJCOPY) $(OBJCOPYFLAGS) vmlinux vmlinux-tmp
 	gzip vmlinux-tmp

arch/mips64/Makefile

@@ -149,7 +149,7 @@ endif
 
 vmlinux: arch/mips64/vmlinux.lds.s
 
-CPPFLAGS_arch/mips64/vmlinux.lds.s := -imacros $(srctree)/include/asm-mips64/sn/mapped_kernel.h
+AFLAGS_vmlinux.lds.o := -imacros $(srctree)/include/asm-mips64/sn/mapped_kernel.h
 
 ifdef CONFIG_MAPPED_KERNEL
 vmlinux.64: vmlinux

arch/sh/Makefile

@@ -72,9 +72,7 @@ endif
 
 vmlinux: arch/sh/vmlinux.lds.s
 
-CPPFLAGS_arch/sh/vmlinux.lds.s := -traditional
-
-FORCE: ;
+AFLAGS_vmlinux.lds.o := -traditional
 
 zImage: vmlinux
 	@$(MAKEBOOT) zImage

arch/um/Makefile

+ARCH_DIR = arch/um
+OS := $(shell uname -s)
+
+include $(ARCH_DIR)/Makefile-$(SUBARCH)
+include $(ARCH_DIR)/Makefile-os-$(OS)
+
+EXTRAVERSION := $(EXTRAVERSION)-1um
+include/linux/version.h: arch/$(ARCH)/Makefile
+
+# Recalculate MODLIB to reflect the EXTRAVERSION changes (via KERNELRELEASE)
+# The way the toplevel Makefile is written EXTRAVERSION is not supposed
+# to be changed outside the toplevel Makefile, but recalculating MODLIB is
+# a sufficient workaround until we no longer need architecture dependent
+# EXTRAVERSION...
+MODLIB := $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
+
+MAKEBOOT = $(MAKE) -C $(ARCH_DIR)/boot
+
+ifeq ($(CONFIG_DEBUGSYM),y)
+DEBUG = -g
+CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS))
+endif
+
+ifeq ($(CONFIG_GCOV),y)
+CFLAGS += -fprofile-arcs -ftest-coverage
+endif
+
+ifeq ($(CONFIG_GPROF), y)
+PROFILE += -pg -DPROFILING
+LINK_PROFILE = $(PROFILE) -Wl,--wrap,__monstartup
+endif
+
+ARCH_SUBDIRS = $(ARCH_DIR)/drivers $(ARCH_DIR)/kernel \
+	$(ARCH_DIR)/sys-$(SUBARCH) $(ARCH_DIR)/os-$(OS)
+
+SUBDIRS += $(ARCH_SUBDIRS)
+
+LIBS += $(ARCH_DIR)/kernel/um.o \
+	$(ARCH_DIR)/drivers/drivers.o \
+	$(ARCH_DIR)/sys-$(SUBARCH)/sys.o $(ARCH_DIR)/os/os.o
+
+ifeq ($(CONFIG_PT_PROXY), y)
+SUBDIRS += $(ARCH_DIR)/ptproxy
+LIBS += $(ARCH_DIR)/ptproxy/ptproxy.a
+endif
+
+ARCH_INCLUDE = $(TOPDIR)/$(ARCH_DIR)/include
+
+# -Derrno=kernel_errno - This turns all kernel references to errno into
+# kernel_errno to separate them from the libc errno.  This allows -fno-common
+# in CFLAGS.  Otherwise, it would cause ld to complain about the two different
+# errnos.
+
+CFLAGS += $(DEBUG) $(PROFILE) $(ARCH_CFLAGS) -D__arch_um__ \
+	-DSUBARCH=\"$(SUBARCH)\" -D_LARGEFILE64_SOURCE -I$(ARCH_INCLUDE) \
+	-Derrno=kernel_errno
+
+LDFLAGS += -r
+
+LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+
+SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
+
+$(ARCH_DIR)/link.ld: $(ARCH_DIR)/link.ld.in
+	m4 -DSTART=$$(($(TOP_ADDR) - $(SIZE))) -DELF_ARCH=$(ELF_ARCH) \
+		-DELF_FORMAT=$(ELF_FORMAT) $< > $@
+
+SYMLINK_HEADERS = include/asm-um/archparam.h include/asm-um/system.h \
+	include/asm-um/sigcontext.h include/asm-um/processor.h \
+	include/asm-um/ptrace.h include/asm-um/arch-signal.h
+
+ARCH_SYMLINKS = include/asm-um/arch arch/um/include/sysdep arch/um/os \
+	$(SYMLINK_HEADERS)
+
+GEN_HEADERS = $(ARCH_DIR)/include/task.h
+
+linux: scripts $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) $(ARCH_DIR)/main.o \
+	vmlinux $(ARCH_DIR)/link.ld
+	mv vmlinux vmlinux.o
+	$(CC) -Wl,-T,$(ARCH_DIR)/link.ld $(LINK_PROFILE) $(LINK_WRAPS) \
+		-o linux -static $(ARCH_DIR)/main.o vmlinux.o -L/usr/lib -lutil
+
+USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
+USER_CFLAGS := $(patsubst -Derrno=kernel_errno,,$(USER_CFLAGS))
+USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) -I$(ARCH_INCLUDE)
+
+# To get a definition of F_SETSIG
+USER_CFLAGS += -D_GNU_SOURCE
+
+$(ARCH_DIR)/main.o: $(ARCH_DIR)/main.c
+	$(CC) $(USER_CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<
+
+archmrproper:
+	for d in $(ARCH_SUBDIRS) $(ARCH_DIR)/util; \
+	do \
+		$(MAKE) -C $$d archmrproper; \
+	done
+	rm -f $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) include/asm \
+		$(ARCH_DIR)/link.ld \
+		$(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS))
+
+archclean: sysclean
+	for d in $(ARCH_SUBDIRS) $(ARCH_DIR)/util; \
+	do \
+		$(MAKE) -C $$d clean; \
+	done
+	find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
+		-o -name '*.gcov' \) -type f -print | xargs rm -f
+	rm -f linux x.i gmon.out $(ARCH_DIR)/link.ld $(GEN_HEADERS)
+	@$(MAKEBOOT) clean
+
+archdep: 
+	for d in $(ARCH_SUBDIRS); do $(MAKE) -C $$d fastdep; done
+	@$(MAKEBOOT) dep
+
+$(SYMLINK_HEADERS):
+	cd $(TOPDIR)/$(dir $@) ; \
+	ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
+
+include/asm-um/arch:
+	cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
+
+arch/um/include/sysdep:
+	cd $(TOPDIR)/arch/um/include && ln -sf sysdep-$(SUBARCH) sysdep
+
+arch/um/os:
+	cd $(ARCH_DIR) && ln -sf os-$(OS) os
+
+$(ARCH_DIR)/include/task.h : $(ARCH_DIR)/util/mk_task
+	$< > $@
+
+$(ARCH_DIR)/util/mk_task : $(ARCH_DIR)/util/mk_task_user.c \
+	$(ARCH_DIR)/util/mk_task_kern.c 
+	$(MAKE) $(MFLAGS) -C $(ARCH_DIR)/util all
+
+export SUBARCH USER_CFLAGS OS

arch/um/Makefile-i386

+ifeq ($(CONFIG_HOST_2G_2G), y)
+TOP_ADDR = 0x80000000
+else
+TOP_ADDR = 0xc0000000
+endif
+
+ARCH_CFLAGS = -U__$(SUBARCH)__ -U$(SUBARCH)
+ELF_ARCH = $(SUBARCH)
+ELF_FORMAT = elf32-$(SUBARCH)
+
+
+SYS_HEADERS = $(ARCH_DIR)/include/sysdep-i386/sc.h \
+	$(ARCH_DIR)/include/sysdep-i386/thread.h
+
+$(ARCH_DIR)/include/sysdep-i386/sc.h : $(ARCH_DIR)/sys-i386/util/mk_sc \
+	include/asm
+	$(ARCH_DIR)/sys-i386/util/mk_sc > $@
+
+$(ARCH_DIR)/include/sysdep-i386/thread.h : $(ARCH_DIR)/sys-i386/util/mk_thread\
+	include/asm
+	$(ARCH_DIR)/sys-i386/util/mk_thread > $@
+
+$(ARCH_DIR)/sys-i386/util/mk_sc : $(ARCH_DIR)/sys-i386/util/mk_sc.c \
+	include/asm
+	$(MAKE) -C $(ARCH_DIR)/sys-i386/util mk_sc
+
+$(ARCH_DIR)/sys-i386/util/mk_thread : \
+	$(ARCH_DIR)/sys-i386/util/mk_thread_user.c \
+	$(ARCH_DIR)/sys-i386/util/mk_thread_kern.c
+	$(MAKE) -C $(ARCH_DIR)/sys-i386/util mk_thread
+
+sysclean :
+	rm -f $(SYS_HEADERS)
+	make -C $(ARCH_DIR)/sys-i386/util clean

arch/um/Makefile-ia64

+START_ADDR = 0x1000000000000000

arch/um/Makefile-os-Linux

+# 
+# Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+# Licensed under the GPL
+#
+
+SUBDIRS += $(ARCH_DIR)/os-$(OS)/drivers
+LIBS += $(ARCH_DIR)/os-$(OS)/drivers/drivers.o

arch/um/Makefile-ppc

+ifeq ($(CONFIG_HOST_2G_2G), y)
+START_ADDR = 0x80000000
+else
+START_ADDR = 0xc0000000
+endif
+ARCH_CFLAGS = -U__powerpc__ -D__UM_PPC__
+
+# The arch is ppc, but the elf32 name is powerpc
+ELF_SUBARCH = powerpc

arch/um/boot/Makefile

+dep:
+
+clean:

arch/um/config.in

+define_bool CONFIG_USERMODE y
+
+mainmenu_name "Linux/Usermode Kernel Configuration"
+
+define_bool CONFIG_ISA n
+define_bool CONFIG_SBUS n
+define_bool CONFIG_PCI n
+
+define_bool CONFIG_UID16 y
+
+define_bool CONFIG_RWSEM_GENERIC_SPINLOCK y
+
+mainmenu_option next_comment
+comment 'Code maturity level options'
+bool 'Prompt for development and/or incomplete code/drivers' CONFIG_EXPERIMENTAL
+endmenu
+
+mainmenu_option next_comment
+comment 'General Setup'
+bool 'Networking support' CONFIG_NET
+bool 'System V IPC' CONFIG_SYSVIPC
+bool 'BSD Process Accounting' CONFIG_BSD_PROCESS_ACCT
+bool 'Sysctl support' CONFIG_SYSCTL
+tristate 'Kernel support for a.out binaries' CONFIG_BINFMT_AOUT
+tristate 'Kernel support for ELF binaries' CONFIG_BINFMT_ELF
+tristate 'Kernel support for MISC binaries' CONFIG_BINFMT_MISC
+tristate 'Host filesystem' CONFIG_HOSTFS
+bool 'Management console' CONFIG_MCONSOLE
+dep_bool 'Magic SysRq key' CONFIG_MAGIC_SYSRQ $CONFIG_MCONSOLE
+bool '2G/2G host address space split' CONFIG_HOST_2G_2G
+bool 'Symmetric multi-processing support' CONFIG_UML_SMP
+define_bool CONFIG_SMP $CONFIG_UML_SMP
+int 'Nesting level' CONFIG_NEST_LEVEL 0
+int 'Kernel address space size (in .5G units)' CONFIG_KERNEL_HALF_GIGS 1
+endmenu
+
+mainmenu_option next_comment
+comment 'Loadable module support'
+bool 'Enable loadable module support' CONFIG_MODULES
+if [ "$CONFIG_MODULES" = "y" ]; then
+# MODVERSIONS does not yet work in this architecture
+#   bool '  Set version information on all module symbols' CONFIG_MODVERSIONS
+    bool '  Kernel module loader' CONFIG_KMOD
+fi
+endmenu
+
+source arch/um/config_char.in
+
+source arch/um/config_block.in
+
+define_bool CONFIG_NETDEVICES $CONFIG_NET
+
+if [ "$CONFIG_NET" = "y" ]; then
+   source arch/um/config_net.in
+   source net/Config.in
+fi
+
+source fs/Config.in
+
+mainmenu_option next_comment
+comment 'SCSI support'
+
+tristate 'SCSI support' CONFIG_SCSI
+
+if [ "$CONFIG_SCSI" != "n" ]; then
+   # This gives us free_dma, which scsi.c wants.
+   define_bool CONFIG_GENERIC_ISA_DMA y
+   source arch/um/config_scsi.in
+fi
+endmenu
+
+source drivers/md/Config.in
+
+source drivers/mtd/Config.in
+
+mainmenu_option next_comment
+comment 'Kernel hacking'
+bool 'Debug memory allocations' CONFIG_DEBUG_SLAB
+bool 'Enable kernel debugging symbols' CONFIG_DEBUGSYM
+if [ "$CONFIG_XTERM_CHAN" = "y" ]; then
+   dep_bool 'Enable ptrace proxy' CONFIG_PT_PROXY $CONFIG_DEBUGSYM
+else 
+   define_bool CONFIG_PT_PROXY n
+fi
+dep_bool 'Enable gprof support' CONFIG_GPROF $CONFIG_DEBUGSYM
+dep_bool 'Enable gcov support' CONFIG_GCOV $CONFIG_DEBUGSYM
+endmenu

arch/um/config.release

+#
+# Automatically generated make config: don't edit
+#
+CONFIG_USERMODE=y
+# CONFIG_ISA is not set
+# CONFIG_SBUS is not set
+# CONFIG_PCI is not set
+CONFIG_UID16=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+
+#
+# Code maturity level options
+#
+CONFIG_EXPERIMENTAL=y
+
+#
+# General Setup
+#
+CONFIG_STDIO_CONSOLE=y
+CONFIG_NET=y
+CONFIG_SYSVIPC=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_SYSCTL=y
+CONFIG_BINFMT_AOUT=y
+CONFIG_BINFMT_ELF=y
+CONFIG_BINFMT_MISC=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_UNIX98_PTY_COUNT=256
+CONFIG_SSL=y
+CONFIG_HOSTFS=y
+CONFIG_MCONSOLE=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_HOST_2G_2G is not set
+# CONFIG_UML_SMP is not set
+# CONFIG_SMP is not set
+CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
+CONFIG_CON_CHAN="xterm"
+CONFIG_SSL_CHAN="pty"
+CONFIG_NEST_LEVEL=0
+CONFIG_KERNEL_HALF_GIGS=1
+
+#
+# Loadable module support
+#
+CONFIG_MODULES=y
+CONFIG_KMOD=y
+
+#
+# Devices
+#
+CONFIG_BLK_DEV_UBD=y
+# CONFIG_BLK_DEV_UBD_SYNC is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_NBD=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_MMAPPER is not set
+CONFIG_UML_SOUND=y
+CONFIG_SOUND=y
+CONFIG_HOSTAUDIO=y
+# CONFIG_UML_WATCHDOG is not set
+# CONFIG_TTY_LOG is not set
+CONFIG_FD_CHAN=y
+# CONFIG_NULL_CHAN is not set
+CONFIG_PORT_CHAN=y
+CONFIG_PTY_CHAN=y
+CONFIG_TTY_CHAN=y
+CONFIG_XTERM_CHAN=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+# CONFIG_NETLINK_DEV is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_FILTER is not set
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_INET_ECN is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_IPV6 is not set
+# CONFIG_KHTTPD is not set
+# CONFIG_ATM is not set
+# CONFIG_VLAN_8021Q is not set
+
+#
+#  
+#
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_DECNET is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_LLC is not set
+# CONFIG_NET_DIVERT is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_FASTROUTE is not set
+# CONFIG_NET_HW_FLOWCONTROL is not set
+
+#
+# QoS and/or fair queueing
+#
+# CONFIG_NET_SCHED is not set
+
+#
+# Network device support
+#
+CONFIG_UML_NET=y
+CONFIG_UML_NET_ETHERTAP=y
+CONFIG_UML_NET_TUNTAP=y
+CONFIG_UML_NET_SLIP=y
+CONFIG_UML_NET_DAEMON=y
+CONFIG_UML_NET_MCAST=y
+CONFIG_NETDEVICES=y
+
+#
+# ARCnet devices
+#
+# CONFIG_ARCNET is not set
+CONFIG_DUMMY=y
+CONFIG_BONDING=m
+CONFIG_EQUALIZER=m
+CONFIG_TUN=y
+# CONFIG_ETHERTAP is not set
+
+#
+# Ethernet (10 or 100Mbit)
+#
+# CONFIG_NET_ETHERNET is not set
+
+#
+# Ethernet (1000 Mbit)
+#
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+# CONFIG_MYRI_SBUS is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_SK98LIN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+CONFIG_PLIP=m
+CONFIG_PPP=m
+CONFIG_PPP_MULTILINK=y
+# CONFIG_PPP_FILTER is not set
+# CONFIG_PPP_ASYNC is not set
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPPOE=m
+CONFIG_SLIP=m
+CONFIG_SLIP_COMPRESSED=y
+CONFIG_SLIP_SMART=y
+# CONFIG_SLIP_MODE_SLIP6 is not set
+
+#
+# Wireless LAN (non-hamradio)
+#
+# CONFIG_NET_RADIO is not set
+
+#
+# Token Ring devices
+#
+# CONFIG_TR is not set
+# CONFIG_NET_FC is not set
+# CONFIG_RCPCI is not set
+CONFIG_SHAPER=m
+
+#
+# Wan interfaces
+#
+# CONFIG_WAN is not set
+
+#
+# File systems
+#
+CONFIG_QUOTA=y
+CONFIG_AUTOFS_FS=m
+CONFIG_AUTOFS4_FS=m
+CONFIG_REISERFS_FS=m
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+CONFIG_ADFS_FS=m
+# CONFIG_ADFS_FS_RW is not set
+CONFIG_AFFS_FS=m
+CONFIG_HFS_FS=m
+CONFIG_BFS_FS=m
+CONFIG_EXT3_FS=y
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
+CONFIG_FAT_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_UMSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_EFS_FS=m
+# CONFIG_JFFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=m
+CONFIG_TMPFS=y
+CONFIG_RAMFS=m
+CONFIG_ISO9660_FS=y
+# CONFIG_JOLIET is not set
+# CONFIG_ZISOFS is not set
+CONFIG_MINIX_FS=m
+CONFIG_VXFS_FS=m
+# CONFIG_NTFS_FS is not set
+# CONFIG_NTFS_RW is not set
+CONFIG_HPFS_FS=m
+CONFIG_PROC_FS=y
+CONFIG_DEVFS_FS=y
+CONFIG_DEVFS_MOUNT=y
+# CONFIG_DEVFS_DEBUG is not set
+CONFIG_DEVPTS_FS=y
+CONFIG_QNX4FS_FS=m
+# CONFIG_QNX4FS_RW is not set
+CONFIG_ROMFS_FS=m
+CONFIG_EXT2_FS=y
+CONFIG_SYSV_FS=m
+CONFIG_UDF_FS=m
+# CONFIG_UDF_RW is not set
+CONFIG_UFS_FS=m
+# CONFIG_UFS_FS_WRITE is not set
+
+#
+# Network File Systems
+#
+# CONFIG_CODA_FS is not set
+# CONFIG_INTERMEZZO_FS is not set
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_ROOT_NFS is not set
+CONFIG_NFSD=y
+CONFIG_NFSD_V3=y
+CONFIG_SUNRPC=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+# CONFIG_SMB_FS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_NCPFS_PACKET_SIGNING is not set
+# CONFIG_NCPFS_IOCTL_LOCKING is not set
+# CONFIG_NCPFS_STRONG is not set
+# CONFIG_NCPFS_NFS_NS is not set
+# CONFIG_NCPFS_OS2_NS is not set
+# CONFIG_NCPFS_SMALLDOS is not set
+# CONFIG_NCPFS_NLS is not set
+# CONFIG_NCPFS_EXTRAS is not set
+# CONFIG_ZISOFS_FS is not set
+CONFIG_ZLIB_FS_INFLATE=m
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_SMB_NLS is not set
+CONFIG_NLS=y
+
+#
+# Native Language Support
+#
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
+
+#
+# Multi-device support (RAID and LVM)
+#
+# CONFIG_MD is not set
+# CONFIG_BLK_DEV_MD is not set
+# CONFIG_MD_LINEAR is not set
+# CONFIG_MD_RAID0 is not set
+# CONFIG_MD_RAID1 is not set
+# CONFIG_MD_RAID5 is not set
+# CONFIG_MD_MULTIPATH is not set
+# CONFIG_BLK_DEV_LVM is not set
+
+#
+# Memory Technology Devices (MTD)
+#
+# CONFIG_MTD is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUGSYM is not set
+# CONFIG_PT_PROXY is not set
+# CONFIG_GPROF is not set
+# CONFIG_GCOV is not set

arch/um/config_block.in

+mainmenu_option next_comment
+comment 'Block Devices'
+
+bool 'Virtual block device' CONFIG_BLK_DEV_UBD
+dep_bool '  Always do synchronous disk IO for UBD' CONFIG_BLK_DEV_UBD_SYNC $CONFIG_BLK_DEV_UBD
+tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
+dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
+tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
+if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
+	int '   Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
+fi
+dep_bool '  Initial RAM disk (initrd) support' CONFIG_BLK_DEV_INITRD $CONFIG_BLK_DEV_RAM
+
+tristate 'Example IO memory driver' CONFIG_MMAPPER
+
+endmenu

arch/um/config_char.in

+mainmenu_option next_comment
+comment 'Character Devices'
+
+define_bool CONFIG_STDIO_CONSOLE y
+
+bool 'Virtual serial line' CONFIG_SSL
+
+bool 'file descriptor channel support' CONFIG_FD_CHAN
+bool 'null channel support' CONFIG_NULL_CHAN
+bool 'port channel support' CONFIG_PORT_CHAN
+bool 'pty channel support' CONFIG_PTY_CHAN
+bool 'tty channel support' CONFIG_TTY_CHAN
+bool 'xterm channel support' CONFIG_XTERM_CHAN
+string 'Default main console channel initialization' CONFIG_CON_ZERO_CHAN \
+            "fd:0,fd:1"
+string 'Default console channel initialization' CONFIG_CON_CHAN "xterm"
+string 'Default serial line channel initialization' CONFIG_SSL_CHAN "pty"
+
+
+bool 'Unix98 PTY support' CONFIG_UNIX98_PTYS
+if [ "$CONFIG_UNIX98_PTYS" = "y" ]; then
+   int 'Maximum number of Unix98 PTYs in use (0-2048)' CONFIG_UNIX98_PTY_COUNT 256
+fi
+
+bool 'Watchdog Timer Support' CONFIG_WATCHDOG
+dep_bool '  Disable watchdog shutdown on close' CONFIG_WATCHDOG_NOWAYOUT \
+	$CONFIG_WATCHDOG
+dep_tristate '  Software Watchdog' CONFIG_SOFT_WATCHDOG $CONFIG_WATCHDOG
+dep_tristate '  UML watchdog' CONFIG_UML_WATCHDOG $CONFIG_WATCHDOG
+
+tristate 'Sound support' CONFIG_UML_SOUND
+define_tristate CONFIG_SOUND $CONFIG_UML_SOUND
+define_tristate CONFIG_HOSTAUDIO $CONFIG_UML_SOUND
+
+bool 'Enable tty logging' CONFIG_TTY_LOG
+
+endmenu

arch/um/config_net.in

+mainmenu_option next_comment
+comment 'Network Devices'
+
+# UML virtual driver
+bool 'Virtual network device' CONFIG_UML_NET
+
+dep_bool '  Ethertap transport' CONFIG_UML_NET_ETHERTAP $CONFIG_UML_NET
+dep_bool '  TUN/TAP transport' CONFIG_UML_NET_TUNTAP $CONFIG_UML_NET
+dep_bool '  SLIP transport' CONFIG_UML_NET_SLIP $CONFIG_UML_NET
+dep_bool '  Daemon transport' CONFIG_UML_NET_DAEMON $CONFIG_UML_NET
+dep_bool '  Multicast transport' CONFIG_UML_NET_MCAST $CONFIG_UML_NET
+
+# Below are hardware-independent drivers mirrored from
+# drivers/net/Config.in. It would be nice if Linux
+# had HW independent drivers separated from the other
+# but it does not. Until then each non-ISA/PCI arch
+# needs to provide it's own menu of network drivers
+
+tristate 'Dummy net driver support' CONFIG_DUMMY
+tristate 'Bonding driver support' CONFIG_BONDING
+tristate 'EQL (serial line load balancing) support' CONFIG_EQUALIZER
+tristate 'Universal TUN/TAP device driver support' CONFIG_TUN
+if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+   if [ "$CONFIG_NETLINK" = "y" ]; then
+      tristate 'Ethertap network tap (OBSOLETE)' CONFIG_ETHERTAP
+   fi
+fi
+
+tristate 'PPP (point-to-point protocol) support' CONFIG_PPP
+if [ ! "$CONFIG_PPP" = "n" ]; then
+   dep_bool '  PPP multilink support (EXPERIMENTAL)' CONFIG_PPP_MULTILINK $CONFIG_EXPERIMENTAL
+   dep_bool '  PPP filtering' CONFIG_PPP_FILTER $CONFIG_FILTER
+   dep_tristate '  PPP support for async serial ports' CONFIG_PPP_ASYNC $CONFIG_PPP
+   dep_tristate '  PPP support for sync tty ports' CONFIG_PPP_SYNC_TTY $CONFIG_PPP
+   dep_tristate '  PPP Deflate compression' CONFIG_PPP_DEFLATE $CONFIG_PPP
+   dep_tristate '  PPP BSD-Compress compression' CONFIG_PPP_BSDCOMP $CONFIG_PPP
+   dep_tristate '  PPP over Ethernet (EXPERIMENTAL)' CONFIG_PPPOE $CONFIG_PPP $CONFIG_EXPERIMENTAL
+fi
+
+tristate 'SLIP (serial line) support' CONFIG_SLIP
+dep_bool '  CSLIP compressed headers' CONFIG_SLIP_COMPRESSED $CONFIG_SLIP
+dep_bool '  Keepalive and linefill' CONFIG_SLIP_SMART $CONFIG_SLIP
+dep_bool '  Six bit SLIP encapsulation' CONFIG_SLIP_MODE_SLIP6 $CONFIG_SLIP
+
+endmenu

arch/um/config_scsi.in

+comment 'SCSI support type (disk, tape, CD-ROM)'
+
+dep_tristate '  SCSI disk support' CONFIG_BLK_DEV_SD $CONFIG_SCSI
+
+if [ "$CONFIG_BLK_DEV_SD" != "n" ]; then
+   int  'Maximum number of SCSI disks that can be loaded as modules' CONFIG_SD_EXTRA_DEVS 40
+fi
+
+dep_tristate '  SCSI tape support' CONFIG_CHR_DEV_ST $CONFIG_SCSI
+
+dep_tristate '  SCSI CD-ROM support' CONFIG_BLK_DEV_SR $CONFIG_SCSI
+
+if [ "$CONFIG_BLK_DEV_SR" != "n" ]; then
+   bool '    Enable vendor-specific extensions (for SCSI CDROM)' CONFIG_BLK_DEV_SR_VENDOR
+   int  'Maximum number of CDROM devices that can be loaded as modules' CONFIG_SR_EXTRA_DEVS 2
+fi
+dep_tristate '  SCSI generic support' CONFIG_CHR_DEV_SG $CONFIG_SCSI
+
+comment 'Some SCSI devices (e.g. CD jukebox) support multiple LUNs'
+
+#if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+   bool '  Enable extra checks in new queueing code' CONFIG_SCSI_DEBUG_QUEUES
+#fi
+
+bool '  Probe all LUNs on each SCSI device' CONFIG_SCSI_MULTI_LUN
+  
+bool '  Verbose SCSI error reporting (kernel size +=12K)' CONFIG_SCSI_CONSTANTS
+bool '  SCSI logging facility' CONFIG_SCSI_LOGGING
+
+dep_tristate 'SCSI debugging host simulator (EXPERIMENTAL)' CONFIG_SCSI_DEBUG $CONFIG_SCSI

arch/um/defconfig

+#
+# Automatically generated make config: don't edit
+#
+CONFIG_USERMODE=y
+# CONFIG_ISA is not set
+# CONFIG_SBUS is not set
+# CONFIG_PCI is not set
+CONFIG_UID16=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+
+#
+# Code maturity level options
+#
+CONFIG_EXPERIMENTAL=y
+
+#
+# General Setup
+#
+CONFIG_NET=y
+CONFIG_SYSVIPC=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_SYSCTL=y
+CONFIG_BINFMT_AOUT=y
+CONFIG_BINFMT_ELF=y
+CONFIG_BINFMT_MISC=y
+CONFIG_HOSTFS=y
+CONFIG_MCONSOLE=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_HOST_2G_2G is not set
+# CONFIG_UML_SMP is not set
+# CONFIG_SMP is not set
+CONFIG_NEST_LEVEL=0
+CONFIG_KERNEL_HALF_GIGS=1
+
+#
+# Loadable module support
+#
+CONFIG_MODULES=y
+# CONFIG_KMOD is not set
+
+#
+# Character Devices
+#
+CONFIG_STDIO_CONSOLE=y
+CONFIG_SSL=y
+CONFIG_FD_CHAN=y
+CONFIG_NULL_CHAN=y
+CONFIG_PORT_CHAN=y
+CONFIG_PTY_CHAN=y
+CONFIG_TTY_CHAN=y
+CONFIG_XTERM_CHAN=y
+CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
+CONFIG_CON_CHAN="xterm"
+CONFIG_SSL_CHAN="pty"
+CONFIG_UNIX98_PTYS=y
+CONFIG_UNIX98_PTY_COUNT=256
+# CONFIG_WATCHDOG is not set
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+# CONFIG_SOFT_WATCHDOG is not set
+# CONFIG_UML_WATCHDOG is not set
+CONFIG_UML_SOUND=y
+CONFIG_SOUND=y
+CONFIG_HOSTAUDIO=y
+# CONFIG_TTY_LOG is not set
+
+#
+# Block Devices
+#
+CONFIG_BLK_DEV_UBD=y
+# CONFIG_BLK_DEV_UBD_SYNC is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_NBD=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_MMAPPER is not set
+CONFIG_NETDEVICES=y
+
+#
+# Network Devices
+#
+CONFIG_UML_NET=y
+CONFIG_UML_NET_ETHERTAP=y
+CONFIG_UML_NET_TUNTAP=y
+CONFIG_UML_NET_SLIP=y
+CONFIG_UML_NET_DAEMON=y
+CONFIG_UML_NET_MCAST=y
+CONFIG_DUMMY=y
+# CONFIG_BONDING is not set
+# CONFIG_EQUALIZER is not set
+CONFIG_TUN=y
+CONFIG_PPP=y
+# CONFIG_PPP_MULTILINK is not set
+# CONFIG_PPP_FILTER is not set
+# CONFIG_PPP_ASYNC is not set
+# CONFIG_PPP_SYNC_TTY is not set
+# CONFIG_PPP_DEFLATE is not set
+# CONFIG_PPP_BSDCOMP is not set
+# CONFIG_PPPOE is not set
+CONFIG_SLIP=y
+# CONFIG_SLIP_COMPRESSED is not set
+# CONFIG_SLIP_SMART is not set
+# CONFIG_SLIP_MODE_SLIP6 is not set
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+# CONFIG_NETLINK_DEV is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_FILTER is not set
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_INET_ECN is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_IPV6 is not set
+
+#
+#    SCTP Configuration (EXPERIMENTAL)
+#
+CONFIG_IPV6_SCTP__=y
+# CONFIG_IP_SCTP is not set
+# CONFIG_ATM is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_LLC is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_DEV_APPLETALK is not set
+# CONFIG_DECNET is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_NET_DIVERT is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_FASTROUTE is not set
+# CONFIG_NET_HW_FLOWCONTROL is not set
+
+#
+# QoS and/or fair queueing
+#
+# CONFIG_NET_SCHED is not set
+
+#
+# File systems
+#
+CONFIG_QUOTA=y
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+CONFIG_QUOTACTL=y
+CONFIG_AUTOFS_FS=m
+CONFIG_AUTOFS4_FS=m
+CONFIG_REISERFS_FS=m
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+# CONFIG_ADFS_FS is not set
+# CONFIG_ADFS_FS_RW is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_JBD is not set
+# CONFIG_JBD_DEBUG is not set
+CONFIG_FAT_FS=m
+CONFIG_MSDOS_FS=m
+# CONFIG_UMSDOS_FS is not set
+CONFIG_VFAT_FS=m
+# CONFIG_EFS_FS is not set
+CONFIG_JFFS_FS=y
+CONFIG_JFFS_FS_VERBOSE=0
+CONFIG_JFFS_PROC_FS=y
+# CONFIG_JFFS2_FS is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_TMPFS is not set
+CONFIG_RAMFS=y
+CONFIG_ISO9660_FS=m
+# CONFIG_JOLIET is not set
+# CONFIG_ZISOFS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_JFS_DEBUG is not set
+# CONFIG_JFS_STATISTICS is not set
+CONFIG_MINIX_FS=m
+# CONFIG_VXFS_FS is not set
+# CONFIG_NTFS_FS is not set
+# CONFIG_NTFS_DEBUG is not set
+# CONFIG_NTFS_RW is not set
+# CONFIG_HPFS_FS is not set
+CONFIG_PROC_FS=y
+CONFIG_DEVFS_FS=y
+CONFIG_DEVFS_MOUNT=y
+# CONFIG_DEVFS_DEBUG is not set
+CONFIG_DEVPTS_FS=y
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QNX4FS_RW is not set
+# CONFIG_ROMFS_FS is not set
+CONFIG_EXT2_FS=y
+# CONFIG_SYSV_FS is not set
+# CONFIG_UDF_FS is not set
+# CONFIG_UDF_RW is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_UFS_FS_WRITE is not set
+
+#
+# Network File Systems
+#
+# CONFIG_CODA_FS is not set
+# CONFIG_INTERMEZZO_FS is not set
+# CONFIG_NFS_FS is not set
+# CONFIG_NFS_V3 is not set
+# CONFIG_ROOT_NFS is not set
+# CONFIG_NFSD is not set
+# CONFIG_NFSD_V3 is not set
+# CONFIG_NFSD_TCP is not set
+# CONFIG_SUNRPC is not set
+# CONFIG_LOCKD is not set
+# CONFIG_EXPORTFS is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_NCPFS_PACKET_SIGNING is not set
+# CONFIG_NCPFS_IOCTL_LOCKING is not set
+# CONFIG_NCPFS_STRONG is not set
+# CONFIG_NCPFS_NFS_NS is not set
+# CONFIG_NCPFS_OS2_NS is not set
+# CONFIG_NCPFS_SMALLDOS is not set
+# CONFIG_NCPFS_NLS is not set
+# CONFIG_NCPFS_EXTRAS is not set
+# CONFIG_ZISOFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_SMB_NLS is not set
+CONFIG_NLS=y
+
+#
+# Native Language Support
+#
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
+
+#
+# SCSI support
+#
+CONFIG_SCSI=y
+CONFIG_GENERIC_ISA_DMA=y
+
+#
+# SCSI support type (disk, tape, CD-ROM)
+#
+CONFIG_BLK_DEV_SD=y
+CONFIG_SD_EXTRA_DEVS=40
+CONFIG_CHR_DEV_ST=y
+CONFIG_BLK_DEV_SR=y
+CONFIG_BLK_DEV_SR_VENDOR=y
+CONFIG_SR_EXTRA_DEVS=2
+CONFIG_CHR_DEV_SG=y
+
+#
+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
+#
+CONFIG_SCSI_DEBUG_QUEUES=y
+CONFIG_SCSI_MULTI_LUN=y
+CONFIG_SCSI_CONSTANTS=y
+CONFIG_SCSI_LOGGING=y
+CONFIG_SCSI_DEBUG=y
+
+#
+# Multi-device support (RAID and LVM)
+#
+# CONFIG_MD is not set
+# CONFIG_BLK_DEV_MD is not set
+# CONFIG_MD_LINEAR is not set
+# CONFIG_MD_RAID0 is not set
+# CONFIG_MD_RAID1 is not set
+# CONFIG_MD_RAID5 is not set
+# CONFIG_MD_MULTIPATH is not set
+# CONFIG_BLK_DEV_LVM is not set
+
+#
+# Memory Technology Devices (MTD)
+#
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_PARTITIONS is not set
+# CONFIG_MTD_REDBOOT_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLOCK=y
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+# CONFIG_MTD_CFI is not set
+# CONFIG_MTD_JEDECPROBE is not set
+# CONFIG_MTD_GEN_PROBE is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+# CONFIG_MTD_CFI_AMDSTD is not set
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+# CONFIG_MTD_OBSOLETE_CHIPS is not set
+# CONFIG_MTD_AMDSTD is not set
+# CONFIG_MTD_SHARP is not set
+# CONFIG_MTD_JEDEC is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_PHYSMAP is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+CONFIG_MTD_BLKMTD=m
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC1000 is not set
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOCPROBE is not set
+
+#
+# NAND Flash Device Drivers
+#
+# CONFIG_MTD_NAND is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_DEBUG_SLAB is not set
+CONFIG_DEBUGSYM=y
+CONFIG_PT_PROXY=y
+# CONFIG_GPROF is not set
+# CONFIG_GCOV is not set

arch/um/drivers/Makefile

+# 
+# Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com)
+# Licensed under the GPL
+#
+
+O_TARGET := drivers.o 
+
+CHAN_OBJS := chan_kern.o chan_user.o line.o 
+
+list-multi := slip.o daemon.o mcast.o mconsole.o net.o ubd.o hostaudio.o \
+	port.o harddog.o
+
+slip-objs := slip_kern.o slip_user.o
+daemon-objs := daemon_kern.o daemon_user.o
+mcast-objs := mcast_kern.o mcast_user.o
+net-objs := net_kern.o net_user.o
+mconsole-objs := mconsole_kern.o mconsole_user.o
+hostaudio-objs := hostaudio_kern.o hostaudio_user.o
+ubd-objs := ubd_kern.o ubd_user.o
+port-objs := port_kern.o port_user.o
+harddog-objs := harddog_kern.o harddog_user.o
+
+export-objs := mconsole_kern.o
+
+obj-y = 
+obj-$(CONFIG_SSL) += ssl.o 
+obj-$(CONFIG_UML_NET_SLIP) += slip.o
+obj-$(CONFIG_UML_NET_DAEMON) += daemon.o 
+obj-$(CONFIG_UML_NET_MCAST) += mcast.o 
+obj-$(CONFIG_UML_NET) += net.o 
+obj-$(CONFIG_MCONSOLE) += mconsole.o
+obj-$(CONFIG_MMAPPER) += mmapper_kern.o 
+obj-$(CONFIG_BLK_DEV_UBD) += ubd.o 
+obj-$(CONFIG_HOSTAUDIO) += hostaudio.o
+obj-$(CONFIG_FD_CHAN) += fd.o 
+obj-$(CONFIG_NULL_CHAN) += null.o 
+obj-$(CONFIG_PORT_CHAN) += port.o
+obj-$(CONFIG_PTY_CHAN) += pty.o
+obj-$(CONFIG_TTY_CHAN) += tty.o 
+obj-$(CONFIG_XTERM_CHAN) += xterm.o
+obj-$(CONFIG_UML_WATCHDOG) += harddog.o
+
+obj-y += stdio_console.o $(CHAN_OBJS)
+
+USER_SINGLE_OBJS = $(foreach f,$(patsubst %.o,%,$(obj-y) $(obj-m)),$($(f)-objs))
+
+USER_OBJS = $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) fd.o \
+	null.o pty.o tty.o xterm.o
+
+include $(TOPDIR)/Rules.make
+
+$(USER_OBJS) : %.o: %.c
+	$(CC) $(CFLAGS_$@) $(USER_CFLAGS) -c -o $@ $<
+
+clean:
+
+modules:
+
+fastdep:
+
+dep:
+
+archmrproper:
+
+daemon.o : $(daemon-objs)
+
+slip.o : $(slip-objs)
+
+mcast.o : $(mcast-objs)
+
+mconsole.o : $(mconsole-objs)
+
+net.o : $(net-objs)
+
+hostaudio.o : $(hostaudio-objs)
+
+ubd.o : $(ubd-objs)
+
+port.o : $(port-objs)
+
+harddog.o : $(harddog-objs)
+
+$(list-multi) : # This doesn't work, but should : '%.o : $(%-objs)'
+	$(LD) $(LD_RFLAG) -r -o $@ $($(patsubst %.o,%,$@)-objs)

arch/um/drivers/chan_user.c

+/* 
+ * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include "kern_util.h"
+#include "user_util.h"
+#include "chan_user.h"
+#include "user.h"
+#include "helper.h"
+#include "os.h"
+
+void generic_close(int fd, void *unused)
+{
+	close(fd);
+}
+
+int generic_read(int fd, char *c_out, void *unused)
+{
+	int n;
+
+	n = read(fd, c_out, sizeof(*c_out));
+	if(n < 0){
+		if(errno == EAGAIN) return(0);
+		return(-errno);
+	}
+	else if(n == 0) return(-EIO);
+	return(1);
+}
+
+int generic_write(int fd, const char *buf, int n, void *unused)
+{
+	int count;
+
+	count = write(fd, buf, n);
+	if(count < 0) return(-errno);
+	return(count);
+}
+
+int generic_console_write(int fd, const char *buf, int n, void *unused)
+{
+	struct termios save, new;
+	int err;
+
+	if(isatty(fd)){
+		tcgetattr(fd, &save);
+		new = save;
+		new.c_oflag |= OPOST;
+		tcsetattr(fd, TCSAFLUSH, &new);
+	}
+	err = generic_write(fd, buf, n, NULL);
+	if(isatty(fd)) tcsetattr(fd, TCSAFLUSH, &save);
+	return(err);
+}
+
+int generic_window_size(int fd, void *unused, unsigned short *rows_out,
+			unsigned short *cols_out)
+{
+	struct winsize size;
+	int ret = 0;
+
+	if(ioctl(fd, TIOCGWINSZ, &size) == 0){
+		ret = ((*rows_out != size.ws_row) || 
+		       (*cols_out != size.ws_col));
+		*rows_out = size.ws_row;
+		*cols_out = size.ws_col;
+	}
+	return(ret);
+}
+
+void generic_free(void *data)
+{
+	kfree(data);
+}
+
+static void winch_handler(int sig)
+{
+}
+
+struct winch_data {
+	int pty_fd;
+	int pipe_fd;
+	int close_me;
+};
+
+static int winch_thread(void *arg)
+{
+	struct winch_data *data = arg;
+	sigset_t sigs;
+	int pty_fd, pipe_fd;
+	char c = 1;
+
+	close(data->close_me);
+	pty_fd = data->pty_fd;
+	pipe_fd = data->pipe_fd;
+	if(write(pipe_fd, &c, sizeof(c)) != sizeof(c))
+		printk("winch_thread : failed to write synchronization "
+		       "byte, errno = %d\n", errno);
+
+	signal(SIGWINCH, winch_handler);
+	sigfillset(&sigs);
+	sigdelset(&sigs, SIGWINCH);
+	if(sigprocmask(SIG_SETMASK, &sigs, NULL) < 0){
+		printk("winch_thread : sigprocmask failed, errno = %d\n", 
+		       errno);
+		exit(1);
+	}
+
+	if(setsid() < 0){
+		printk("winch_thread : setsid failed, errno = %d\n", errno);
+		exit(1);
+	}
+
+	if(ioctl(pty_fd, TIOCSCTTY, 0) < 0){
+		printk("winch_thread : TIOCSCTTY failed, errno = %d\n", errno);
+		exit(1);
+	}
+	if(tcsetpgrp(pty_fd, os_getpid()) < 0){
+		printk("winch_thread : tcsetpgrp failed, errno = %d\n", errno);
+		exit(1);
+	}
+
+	if(read(pipe_fd, &c, sizeof(c)) != sizeof(c))
+		printk("winch_thread : failed to read synchronization byte, "
+		       "errno = %d\n", errno);
+
+	while(1){
+		pause();
+
+		if(write(pipe_fd, &c, sizeof(c)) != sizeof(c)){
+			printk("winch_thread : write failed, errno = %d\n",
+			       errno);
+		}
+	}
+}
+
+static int tracer_winch[2];
+
+static void tracer_winch_handler(int sig)
+{
+	char c = 1;
+
+	if(write(tracer_winch[1], &c, sizeof(c)) != sizeof(c))
+		printk("tracer_winch_handler - write failed, errno = %d\n",
+		       errno);
+}
+
+void setup_tracer_winch(void)
+{
+	int err;
+
+	err = os_pipe(tracer_winch, 1, 1);
+	if(err){
+		printk("setup_tracer_winch : os_pipe failed, errno = %d\n", 
+		       -err);
+		return;
+	}
+	signal(SIGWINCH, tracer_winch_handler);
+}
+
+static int winch_tramp(int fd, void *device_data, int *fd_out)
+{
+	struct winch_data data;
+	unsigned long stack;
+	int fds[2], pid, n, err;
+	char c;
+
+	err = os_pipe(fds, 1, 1);
+	if(err){
+		printk("winch_tramp : os_pipe failed, errno = %d\n", -err);
+		return(err);
+	}
+
+	data = ((struct winch_data) { pty_fd :		fd,
+				      pipe_fd :		fds[1],
+				      close_me :	fds[0] } );
+	pid = run_helper_thread(winch_thread, &data, 0, &stack, 0);
+	if(pid < 0){
+		printk("fork of winch_thread failed - errno = %d\n", errno);
+		return(pid);
+	}
+
+	close(fds[1]);
+	*fd_out = fds[0];
+	n = read(fds[0], &c, sizeof(c));
+	if(n != sizeof(c)){
+		printk("winch_tramp : failed to read synchronization byte\n");
+		printk("read returned %d, errno = %d\n", n, errno);
+		printk("fd %d will not support SIGWINCH\n", fd);
+		*fd_out = -1;
+	}
+	return(pid);
+}
+
+void register_winch(int fd, void *device_data)
+{
+	int pid, thread, thread_fd;
+	char c = 1;
+
+	if(!isatty(fd)) return;
+
+	pid = tcgetpgrp(fd);
+	if(pid == tracing_pid)
+		register_winch_irq(tracer_winch[0], fd, -1, device_data);
+	else if(pid == -1){
+		thread = winch_tramp(fd, device_data, &thread_fd);
+		if(fd != -1){
+			register_winch_irq(thread_fd, fd, thread, device_data);
+
+			if(write(thread_fd, &c, sizeof(c)) != sizeof(c))
+				printk("register_winch : failed to write "
+				       "synchronization byte\n");
+		}
+	}
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/daemon.h

+/* 
+ * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "net_user.h"
+
+#define SWITCH_VERSION 3
+
+struct daemon_data {
+	char *sock_type;
+	char *ctl_sock;
+	void *ctl_addr;
+	void *data_addr;
+	void *local_addr;
+	int fd;
+	int control;
+	void *dev;
+};
+
+extern struct net_user_info daemon_user_info;
+
+extern int daemon_user_write(int fd, void *buf, int len, 
+			     struct daemon_data *pri);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/daemon_kern.c

+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and 
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ * Licensed under the GPL.
+ */
+
+#include "linux/kernel.h"
+#include "linux/init.h"
+#include "linux/netdevice.h"
+#include "linux/etherdevice.h"
+#include "net_kern.h"
+#include "net_user.h"
+#include "daemon.h"
+#include "daemon_kern.h"
+
+struct daemon_data daemon_priv[MAX_UML_NETDEV] = {
+	[ 0 ... MAX_UML_NETDEV - 1 ] =
+	{
+		sock_type :	"unix",
+		ctl_sock :	"/tmp/uml.ctl",
+		ctl_addr :	NULL,
+		data_addr :	NULL,
+		local_addr :	NULL,
+		fd :		-1,
+		control :	-1,
+		dev :		NULL,
+	}
+};
+
+void daemon_init(struct net_device *dev, int index)
+{
+	struct uml_net_private *pri;
+	struct daemon_data *dpri;
+
+	init_etherdev(dev, 0);
+	pri = dev->priv;
+	dpri = (struct daemon_data *) pri->user;
+	*dpri = daemon_priv[index];
+	printk("daemon backend (uml_switch version %d) - %s:%s", 
+	       SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock);
+	printk("\n");
+}
+
+static unsigned short daemon_protocol(struct sk_buff *skb)
+{
+	return(eth_type_trans(skb, skb->dev));
+}
+
+static int daemon_read(int fd, struct sk_buff **skb, 
+		       struct uml_net_private *lp)
+{
+	*skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
+	if(*skb == NULL) return(-ENOMEM);
+	return(net_recvfrom(fd, (*skb)->mac.raw, 
+			    (*skb)->dev->mtu + ETH_HEADER_OTHER));
+}
+
+static int daemon_write(int fd, struct sk_buff **skb,
+			struct uml_net_private *lp)
+{
+	return(daemon_user_write(fd, (*skb)->data, (*skb)->len, 
+				 (struct daemon_data *) &lp->user));
+}
+
+static struct net_kern_info daemon_kern_info = {
+	init:			daemon_init,
+	protocol:		daemon_protocol,
+	read:			daemon_read,
+	write:			daemon_write,
+};
+
+static int daemon_count = 0;
+
+int daemon_setup(char *str, struct uml_net *dev)
+{
+	int err, n = daemon_count;
+
+	dev->user = &daemon_user_info;
+	dev->kern = &daemon_kern_info;
+	dev->private_size = sizeof(struct daemon_data);
+	dev->transport_index = daemon_count++;
+	if(*str != ',') return(0);
+	str++;
+ 	if(*str != ','){
+ 		err = setup_etheraddr(str, dev->mac);
+ 		if(!err) dev->have_mac = 1;
+ 	}
+	str = strchr(str, ',');
+	if(str == NULL) return(0);
+	*str++ = '\0';
+	if(*str != ',') daemon_priv[n].sock_type = str;
+	str = strchr(str, ',');
+	if(str == NULL) return(0);
+	*str++ = '\0';
+	if(*str != ',') daemon_priv[n].ctl_sock = str;
+	str = strchr(str, ',');
+	if(str == NULL) return(0);
+	*str = '\0';
+	printk(KERN_WARNING "daemon_setup : Ignoring data socket "
+	       "specification\n");
+	return(0);
+}
+
+static struct transport daemon_transport = {
+	list :	LIST_HEAD_INIT(daemon_transport.list),
+	name :	"daemon",
+	setup : daemon_setup
+};
+
+static int register_daemon(void)
+{
+	register_transport(&daemon_transport);
+	return(1);
+}
+
+__initcall(register_daemon);
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/daemon_kern.h

+#ifndef __UM_DAEMON_KERN_H
+#define __UM_DAEMON_KERN_H
+
+#include "net_kern.h"
+
+extern int daemon_setup(char *arg, struct uml_net *dev);
+
+#endif

arch/um/drivers/daemon_user.c

+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and 
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ * Licensed under the GPL.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include "net_user.h"
+#include "daemon.h"
+#include "kern_util.h"
+#include "user_util.h"
+#include "user.h"
+#include "os.h"
+
+#define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
+
+enum request_type { REQ_NEW_CONTROL };
+
+#define SWITCH_MAGIC 0xfeedface
+
+struct request_v3 {
+	unsigned long magic;
+	int version;
+	enum request_type type;
+	struct sockaddr_un sock;
+};
+
+static struct sockaddr_un *new_addr(void *name, int len)
+{
+	struct sockaddr_un *sun;
+
+	sun = um_kmalloc(sizeof(struct sockaddr_un));
+	if(sun == NULL){
+		printk("new_addr: allocation of sockaddr_un failed\n");
+		return(NULL);
+	}
+	sun->sun_family = AF_UNIX;
+	memcpy(sun->sun_path, name, len);
+	return(sun);
+}
+
+static int connect_to_switch(struct daemon_data *pri)
+{
+	struct sockaddr_un *ctl_addr = pri->ctl_addr;
+	struct sockaddr_un *local_addr = pri->local_addr;
+	struct sockaddr_un *sun;
+	struct request_v3 req;
+	int fd, n, err;
+
+	if((pri->control = socket(AF_UNIX, SOCK_STREAM, 0)) < 0){
+		printk("daemon_open : control socket failed, errno = %d\n", 
+		       errno);		
+		return(-errno);
+	}
+
+	if(connect(pri->control, (struct sockaddr *) ctl_addr, 
+		   sizeof(*ctl_addr)) < 0){
+		printk("daemon_open : control connect failed, errno = %d\n",
+		       errno);
+		err = -errno;
+		goto out;
+	}
+
+	if((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0){
+		printk("daemon_open : data socket failed, errno = %d\n", 
+		       errno);
+		err = -errno;
+		goto out;
+	}
+	if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
+		printk("daemon_open : data bind failed, errno = %d\n", 
+		       errno);
+		err = -errno;
+		goto out_close;
+	}
+
+	sun = um_kmalloc(sizeof(struct sockaddr_un));
+	if(sun == NULL){
+		printk("new_addr: allocation of sockaddr_un failed\n");
+		err = -ENOMEM;
+		goto out_close;
+	}
+
+	req.magic = SWITCH_MAGIC;
+	req.version = SWITCH_VERSION;
+	req.type = REQ_NEW_CONTROL;
+	req.sock = *local_addr;
+	n = write(pri->control, &req, sizeof(req));
+	if(n != sizeof(req)){
+		printk("daemon_open : control setup request returned %d, "
+		       "errno = %d\n", n, errno);
+		err = -ENOTCONN;
+		goto out;		
+	}
+
+	n = read(pri->control, sun, sizeof(*sun));
+	if(n != sizeof(*sun)){
+		printk("daemon_open : read of data socket returned %d, "
+		       "errno = %d\n", n, errno);
+		err = -ENOTCONN;
+		goto out_close;		
+	}
+
+	pri->data_addr = sun;
+	return(fd);
+
+ out_close:
+	close(fd);
+ out:
+	close(pri->control);
+	return(err);
+}
+
+static void daemon_user_init(void *data, void *dev)
+{
+	struct daemon_data *pri = data;
+	struct timeval tv;
+	struct {
+		char zero;
+		int pid;
+		int usecs;
+	} name;
+
+	if(!strcmp(pri->sock_type, "unix"))
+		pri->ctl_addr = new_addr(pri->ctl_sock, 
+					 strlen(pri->ctl_sock) + 1);
+	name.zero = 0;
+	name.pid = os_getpid();
+	gettimeofday(&tv, NULL);
+	name.usecs = tv.tv_usec;
+	pri->local_addr = new_addr(&name, sizeof(name));
+	pri->dev = dev;
+	pri->fd = connect_to_switch(pri);
+	if(pri->fd < 0){
+		kfree(pri->local_addr);
+		pri->local_addr = NULL;
+	}
+}
+
+static int daemon_open(void *data)
+{
+	struct daemon_data *pri = data;
+	return(pri->fd);
+}
+
+static void daemon_remove(void *data)
+{
+	struct daemon_data *pri = data;
+
+	close(pri->fd);
+	close(pri->control);
+	if(pri->data_addr != NULL) kfree(pri->data_addr);
+	if(pri->ctl_addr != NULL) kfree(pri->ctl_addr);
+	if(pri->local_addr != NULL) kfree(pri->local_addr);
+}
+
+int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
+{
+	struct sockaddr_un *data_addr = pri->data_addr;
+
+	return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+}
+
+static int daemon_set_mtu(int mtu, void *data)
+{
+	return(mtu);
+}
+
+struct net_user_info daemon_user_info = {
+	init:		daemon_user_init,
+	open:		daemon_open,
+	close:	 	NULL,
+	remove:	 	daemon_remove,
+	set_mtu:	daemon_set_mtu,
+	add_address:	NULL,
+	delete_address: NULL,
+	max_packet:	MAX_PACKET - ETH_HEADER_OTHER
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/fd.c

+/* 
+ * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+#include "user.h"
+#include "user_util.h"
+#include "chan_user.h"
+
+struct fd_chan {
+	int fd;
+	int raw;
+	struct termios tt;
+};
+
+void *fd_init(char *str, int device, struct chan_opts *opts)
+{
+	struct fd_chan *data;
+	char *end;
+	int n;
+
+	if(*str != ':'){
+		printk("fd_init : channel type 'fd' must specify a file "
+		       "descriptor\n");
+		return(NULL);
+	}
+	str++;
+	n = strtoul(str, &end, 0);
+	if(*end != '\0'){
+		printk("fd_init : couldn't parse file descriptor '%s'\n", str);
+		return(NULL);
+	}
+	if((data = um_kmalloc(sizeof(*data))) == NULL) return(NULL);
+	*data = ((struct fd_chan) { fd : 	n,
+				    raw : 	opts->raw });
+	return(data);
+}
+
+int fd_open(int input, int output, int primary, void *d)
+{
+	struct fd_chan *data = d;
+
+	if(data->raw && isatty(data->fd)){
+		tcgetattr(data->fd, &data->tt);
+		raw(data->fd, 0);
+	}
+	return(data->fd);
+}
+
+void fd_close(int fd, void *d)
+{
+	struct fd_chan *data = d;
+
+	if(data->raw && isatty(fd)){
+		tcsetattr(fd, TCSAFLUSH, &data->tt);
+		data->raw = 0;
+	}
+}
+
+int fd_console_write(int fd, const char *buf, int n, void *d)
+{
+	struct fd_chan *data = d;
+
+	return(generic_console_write(fd, buf, n, &data->tt));
+}
+
+struct chan_ops fd_ops = {
+	init:		fd_init,
+	open:		fd_open,
+	close:		fd_close,
+	read:		generic_read,
+	write:		generic_write,
+	console_write:	fd_console_write,
+	window_size:	generic_window_size,
+	free:		generic_free,
+	winch:		1,
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/harddog_kern.c

+/* UML hardware watchdog, shamelessly stolen from:
+ *
+ *	SoftDog	0.05:	A Software Watchdog Device
+ *
+ *	(c) Copyright 1996 Alan Cox <alan@redhat.com>, All Rights Reserved.
+ *				http://www.redhat.com
+ *
+ *	This program 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
+ *	2 of the License, or (at your option) any later version.
+ *	
+ *	Neither Alan Cox nor CymruNet Ltd. admit liability nor provide 
+ *	warranty for any of this software. This material is provided 
+ *	"AS-IS" and at no charge.	
+ *
+ *	(c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ *	Software only watchdog driver. Unlike its big brother the WDT501P
+ *	driver this won't always recover a failed machine.
+ *
+ *  03/96: Angelo Haritsis <ah@doc.ic.ac.uk> :
+ *	Modularised.
+ *	Added soft_margin; use upon insmod to change the timer delay.
+ *	NB: uses same minor as wdt (WATCHDOG_MINOR); we could use separate
+ *	    minors.
+ *
+ *  19980911 Alan Cox
+ *	Made SMP safe for 2.3.x
+ *
+ *  20011127 Joel Becker (jlbec@evilplan.org>
+ *	Added soft_noboot; Allows testing the softdog trigger without 
+ *	requiring a recompile.
+ *	Added WDIOC_GETTIMEOUT and WDIOC_SETTIMOUT.
+ */
+ 
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/reboot.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <asm/uaccess.h>
+#include "helper.h"
+#include "mconsole.h"
+
+MODULE_LICENSE("GPL");
+
+static int timer_alive;
+
+static int harddog_in_fd = -1;
+static int harddog_out_fd = -1;
+
+/*
+ *	Allow only one person to hold it open
+ */
+ 
+extern int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock);
+
+static int harddog_open(struct inode *inode, struct file *file)
+{
+	int err;
+	char *sock = NULL;
+
+	if(timer_alive)
+		return -EBUSY;
+#ifdef CONFIG_HARDDOG_NOWAYOUT	 
+	MOD_INC_USE_COUNT;
+#endif
+
+#ifdef CONFIG_MCONSOLE
+	sock = mconsole_notify_socket();
+#endif
+	err = start_watchdog(&harddog_in_fd, &harddog_out_fd, sock);
+	if(err) return(err);
+
+	timer_alive = 1;
+	return 0;
+}
+
+extern void stop_watchdog(int in_fd, int out_fd);
+
+static int harddog_release(struct inode *inode, struct file *file)
+{
+	/*
+	 *	Shut off the timer.
+	 */
+	lock_kernel();
+
+	stop_watchdog(harddog_in_fd, harddog_out_fd);
+	harddog_in_fd = -1;
+	harddog_out_fd = -1;
+
+	timer_alive=0;
+	unlock_kernel();
+	return 0;
+}
+
+extern int ping_watchdog(int fd);
+
+static ssize_t harddog_write(struct file *file, const char *data, size_t len,
+			     loff_t *ppos)
+{
+	/*  Can't seek (pwrite) on this device  */
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
+	/*
+	 *	Refresh the timer.
+	 */
+	if(len)
+		return(ping_watchdog(harddog_out_fd));
+	return 0;
+}
+
+static int harddog_ioctl(struct inode *inode, struct file *file,
+			 unsigned int cmd, unsigned long arg)
+{
+	static struct watchdog_info ident = {
+		WDIOC_SETTIMEOUT,
+		0,
+		"UML Hardware Watchdog"
+	};
+	switch (cmd) {
+		default:
+			return -ENOTTY;
+		case WDIOC_GETSUPPORT:
+			if(copy_to_user((struct harddog_info *)arg, &ident,
+					sizeof(ident)))
+				return -EFAULT;
+			return 0;
+		case WDIOC_GETSTATUS:
+		case WDIOC_GETBOOTSTATUS:
+			return put_user(0,(int *)arg);
+		case WDIOC_KEEPALIVE:
+			return(ping_watchdog(harddog_out_fd));
+	}
+}
+
+static struct file_operations harddog_fops = {
+	owner:		THIS_MODULE,
+	write:		harddog_write,
+	ioctl:		harddog_ioctl,
+	open:		harddog_open,
+	release:	harddog_release,
+};
+
+static struct miscdevice harddog_miscdev = {
+	minor:		WATCHDOG_MINOR,
+	name:		"watchdog",
+	fops:		&harddog_fops,
+};
+
+static char banner[] __initdata = KERN_INFO "UML Watchdog Timer\n";
+
+static int __init harddog_init(void)
+{
+	int ret;
+
+	ret = misc_register(&harddog_miscdev);
+
+	if (ret)
+		return ret;
+
+	printk(banner);
+
+	return(0);
+}
+
+static void __exit harddog_exit(void)
+{
+	misc_deregister(&harddog_miscdev);
+}
+
+module_init(harddog_init);
+module_exit(harddog_exit);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/harddog_user.c

+/* 
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include "user_util.h"
+#include "user.h"
+#include "helper.h"
+#include "mconsole.h"
+#include "os.h"
+
+struct dog_data {
+	int stdin;
+	int stdout;
+	int close_me[2];
+};
+
+static void pre_exec(void *d)
+{
+	struct dog_data *data = d;
+
+	dup2(data->stdin, 0);
+	dup2(data->stdout, 1);
+	dup2(data->stdout, 2);
+	close(data->stdin);
+	close(data->stdout);
+	close(data->close_me[0]);
+	close(data->close_me[1]);
+}
+
+int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock)
+{
+	struct dog_data data;
+	int in_fds[2], out_fds[2], pid, n, err;
+	char pid_buf[sizeof("nnnnn\0")], c;
+	char *pid_args[] = { "/usr/bin/uml_watchdog", "-pid", pid_buf, NULL };
+	char *mconsole_args[] = { "/usr/bin/uml_watchdog", "-mconsole", NULL, 
+				  NULL };
+	char **args = NULL;
+
+	err = os_pipe(in_fds, 1, 0);
+	if(err){
+		printk("harddog_open - os_pipe failed, errno = %d\n", -err);
+		return(err);
+	}
+
+	err = os_pipe(out_fds, 1, 0);
+	if(err){
+		printk("harddog_open - os_pipe failed, errno = %d\n", -err);
+		return(err);
+	}
+
+	data.stdin = out_fds[0];
+	data.stdout = in_fds[1];
+	data.close_me[0] = out_fds[1];
+	data.close_me[1] = in_fds[0];
+
+	if(sock != NULL){
+		mconsole_args[2] = sock;
+		args = mconsole_args;
+	}
+	else {
+		sprintf(pid_buf, "%d", tracing_pid);
+		args = pid_args;
+	}
+
+	pid = run_helper(pre_exec, &data, args, NULL);
+
+	close(out_fds[0]);
+	close(in_fds[1]);
+
+	if(pid < 0){
+		err = -pid;
+		printk("harddog_open - run_helper failed, errno = %d\n", err);
+		goto out;
+	}
+
+	n = read(in_fds[0], &c, sizeof(c));
+	if(n == 0){
+		printk("harddog_open - EOF on watchdog pipe\n");
+		helper_wait(pid);
+		err = -EIO;
+		goto out;
+	}
+	else if(n < 0){
+		printk("harddog_open - read of watchdog pipe failed, "
+		       "errno = %d\n", errno);
+		helper_wait(pid);
+		err = -errno;
+		goto out;
+	}
+	*in_fd_ret = in_fds[0];
+	*out_fd_ret = out_fds[1];
+	return(0);
+ out:
+	close(out_fds[1]);
+	close(in_fds[0]);
+	return(err);
+}
+
+void stop_watchdog(int in_fd, int out_fd)
+{
+	close(in_fd);
+	close(out_fd);
+}
+
+int ping_watchdog(int fd)
+{
+	int n;
+	char c = '\n';
+
+	n = write(fd, &c, sizeof(c));
+	if(n < sizeof(c)){
+		printk("ping_watchdog - write failed, errno = %d\n",
+		       errno);
+		return(-errno);
+	}
+	return 1;
+
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/hostaudio_kern.c

+/* 
+ * Copyright (C) 2002 Steve Schmidtke 
+ * Licensed under the GPL
+ */
+
+#include "linux/config.h"
+#include "linux/module.h"
+#include "linux/version.h"
+#include "linux/init.h"
+#include "linux/slab.h"
+#include "linux/fs.h"
+#include "linux/sound.h"
+#include "linux/soundcard.h"
+#include "kern_util.h"
+#include "init.h"
+#include "hostaudio.h"
+
+char *dsp = HOSTAUDIO_DEV_DSP;
+char *mixer = HOSTAUDIO_DEV_MIXER;
+
+#ifndef MODULE
+static int set_dsp(char *name, int *add)
+{
+	dsp = uml_strdup(name);
+	return(0);
+}
+
+__uml_setup("dsp=", set_dsp,
+"dsp=<dsp device>\n"
+"    This is used to specify the host dsp device to the hostaudio driver.\n"
+"    The default is \"" HOSTAUDIO_DEV_DSP "\".\n\n"
+);
+
+static int set_mixer(char *name, int *add)
+{
+	mixer = uml_strdup(name);
+	return(0);
+}
+
+__uml_setup("mixer=", set_mixer,
+"mixer=<mixer device>\n"
+"    This is used to specify the host mixer device to the hostaudio driver.\n"
+"    The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n"
+);
+#endif
+
+/* /dev/dsp file operations */
+
+static ssize_t hostaudio_read(struct file *file, char *buffer, size_t count, 
+			      loff_t *ppos)
+{
+        struct hostaudio_state *state = file->private_data;
+
+#ifdef DEBUG
+        printk("hostaudio: read called, count = %d\n", count);
+#endif
+
+        return(hostaudio_read_user(state, buffer, count, ppos));
+}
+
+static ssize_t hostaudio_write(struct file *file, const char *buffer, 
+			       size_t count, loff_t *ppos)
+{
+        struct hostaudio_state *state = file->private_data;
+
+#ifdef DEBUG
+        printk("hostaudio: write called, count = %d\n", count);
+#endif
+        return(hostaudio_write_user(state, buffer, count, ppos));
+}
+
+static unsigned int hostaudio_poll(struct file *file, 
+				   struct poll_table_struct *wait)
+{
+        unsigned int mask = 0;
+
+#ifdef DEBUG
+        printk("hostaudio: poll called (unimplemented)\n");
+#endif
+
+        return(mask);
+}
+
+static int hostaudio_ioctl(struct inode *inode, struct file *file, 
+			   unsigned int cmd, unsigned long arg)
+{
+        struct hostaudio_state *state = file->private_data;
+
+#ifdef DEBUG
+        printk("hostaudio: ioctl called, cmd = %u\n", cmd);
+#endif
+
+        return(hostaudio_ioctl_user(state, cmd, arg));
+}
+
+static int hostaudio_open(struct inode *inode, struct file *file)
+{
+        struct hostaudio_state *state;
+        int r = 0, w = 0;
+        int ret;
+
+#ifdef DEBUG
+        printk("hostaudio: open called (host: %s)\n", dsp);
+#endif
+
+        state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
+        if(state == NULL) return(-ENOMEM);
+
+        if(file->f_mode & FMODE_READ) r = 1;
+        if(file->f_mode & FMODE_WRITE) w = 1;
+
+        ret = hostaudio_open_user(state, r, w, dsp);
+        if(ret < 0){
+		kfree(state);
+		return(ret);
+        }
+
+        file->private_data = state;
+        return(0);
+}
+
+static int hostaudio_release(struct inode *inode, struct file *file)
+{
+        struct hostaudio_state *state = file->private_data;
+        int ret;
+
+#ifdef DEBUG
+        printk("hostaudio: release called\n");
+#endif
+
+        ret = hostaudio_release_user(state);
+        kfree(state);
+
+        return(ret);
+}
+
+/* /dev/mixer file operations */
+
+static int hostmixer_ioctl_mixdev(struct inode *inode, struct file *file, 
+				  unsigned int cmd, unsigned long arg)
+{
+        struct hostmixer_state *state = file->private_data;
+
+#ifdef DEBUG
+        printk("hostmixer: ioctl called\n");
+#endif
+
+        return(hostmixer_ioctl_mixdev_user(state, cmd, arg));
+}
+
+static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
+{
+        struct hostmixer_state *state;
+        int r = 0, w = 0;
+        int ret;
+
+#ifdef DEBUG
+        printk("hostmixer: open called (host: %s)\n", mixer);
+#endif
+
+        state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
+        if(state == NULL) return(-ENOMEM);
+
+        if(file->f_mode & FMODE_READ) r = 1;
+        if(file->f_mode & FMODE_WRITE) w = 1;
+
+        ret = hostmixer_open_mixdev_user(state, r, w, mixer);
+        
+        if(ret < 0){
+		kfree(state);
+		return(ret);
+        }
+
+        file->private_data = state;
+        return(0);
+}
+
+static int hostmixer_release(struct inode *inode, struct file *file)
+{
+        struct hostmixer_state *state = file->private_data;
+	int ret;
+
+#ifdef DEBUG
+        printk("hostmixer: release called\n");
+#endif
+
+        ret = hostmixer_release_mixdev_user(state);
+        kfree(state);
+
+        return(ret);
+}
+
+
+/* kernel module operations */
+
+static struct file_operations hostaudio_fops = {
+        owner:          THIS_MODULE,
+        llseek:         no_llseek,
+        read:           hostaudio_read,
+        write:          hostaudio_write,
+        poll:           hostaudio_poll,
+        ioctl:          hostaudio_ioctl,
+        mmap:           NULL,
+        open:           hostaudio_open,
+        release:        hostaudio_release,
+};
+
+static struct file_operations hostmixer_fops = {
+        owner:          THIS_MODULE,
+        llseek:         no_llseek,
+        ioctl:          hostmixer_ioctl_mixdev,
+        open:           hostmixer_open_mixdev,
+        release:        hostmixer_release,
+};
+
+struct {
+	int dev_audio;
+	int dev_mixer;
+} module_data;
+
+MODULE_AUTHOR("Steve Schmidtke");
+MODULE_DESCRIPTION("UML Audio Relay");
+MODULE_LICENSE("GPL");
+
+static int __init hostaudio_init_module(void)
+{
+        printk(KERN_INFO "UML Audio Relay\n");
+
+	module_data.dev_audio = register_sound_dsp(&hostaudio_fops, -1);
+        if(module_data.dev_audio < 0){
+                printk(KERN_ERR "hostaudio: couldn't register DSP device!\n");
+                return -ENODEV;
+        }
+
+	module_data.dev_mixer = register_sound_mixer(&hostmixer_fops, -1);
+        if(module_data.dev_mixer < 0){
+                printk(KERN_ERR "hostmixer: couldn't register mixer "
+		       "device!\n");
+                unregister_sound_dsp(module_data.dev_audio);
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static void __exit hostaudio_cleanup_module (void)
+{
+       unregister_sound_mixer(module_data.dev_mixer);
+       unregister_sound_dsp(module_data.dev_audio);
+}
+
+module_init(hostaudio_init_module);
+module_exit(hostaudio_cleanup_module);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/hostaudio_user.c

+/* 
+ * Copyright (C) 2002 Steve Schmidtke 
+ * Licensed under the GPL
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include "hostaudio.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "user.h"
+#include "os.h"
+
+/* /dev/dsp file operations */
+
+ssize_t hostaudio_read_user(struct hostaudio_state *state, char *buffer, 
+			    size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+
+#ifdef DEBUG
+        printk("hostaudio: read_user called, count = %d\n", count);
+#endif
+
+        ret = read(state->fd, buffer, count);
+
+        if(ret < 0) return(-errno);
+        return(ret);
+}
+
+ssize_t hostaudio_write_user(struct hostaudio_state *state, const char *buffer,
+			     size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+
+#ifdef DEBUG
+        printk("hostaudio: write_user called, count = %d\n", count);
+#endif
+
+        ret = write(state->fd, buffer, count);
+
+        if(ret < 0) return(-errno);
+        return(ret);
+}
+
+int hostaudio_ioctl_user(struct hostaudio_state *state, unsigned int cmd, 
+			 unsigned long arg)
+{
+	int ret;
+#ifdef DEBUG
+        printk("hostaudio: ioctl_user called, cmd = %u\n", cmd);
+#endif
+
+        ret = ioctl(state->fd, cmd, arg);
+	
+        if(ret < 0) return(-errno);
+        return(ret);
+}
+
+int hostaudio_open_user(struct hostaudio_state *state, int r, int w, char *dsp)
+{
+#ifdef DEBUG
+        printk("hostaudio: open_user called\n");
+#endif
+
+        state->fd = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
+
+        if(state->fd >= 0) return(0);
+
+        printk("hostaudio_open_user failed to open '%s', errno = %d\n",
+	       dsp, errno);
+        
+        return(-errno); 
+}
+
+int hostaudio_release_user(struct hostaudio_state *state)
+{
+#ifdef DEBUG
+        printk("hostaudio: release called\n");
+#endif
+        if(state->fd >= 0){
+		close(state->fd);
+		state->fd=-1;
+        }
+
+        return(0);
+}
+
+/* /dev/mixer file operations */
+
+int hostmixer_ioctl_mixdev_user(struct hostmixer_state *state, 
+				unsigned int cmd, unsigned long arg)
+{
+	int ret;
+#ifdef DEBUG
+        printk("hostmixer: ioctl_user called cmd = %u\n",cmd);
+#endif
+
+        ret = ioctl(state->fd, cmd, arg);
+	if(ret < 0) 
+		return(-errno);
+	return(ret);
+}
+
+int hostmixer_open_mixdev_user(struct hostmixer_state *state, int r, int w,
+			       char *mixer)
+{
+#ifdef DEBUG
+        printk("hostmixer: open_user called\n");
+#endif
+
+        state->fd = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
+
+        if(state->fd >= 0) return(0);
+
+        printk("hostaudio_open_mixdev_user failed to open '%s', errno = %d\n",
+	       mixer, errno);
+        
+        return(-errno); 
+}
+
+int hostmixer_release_mixdev_user(struct hostmixer_state *state)
+{
+#ifdef DEBUG
+        printk("hostmixer: release_user called\n");
+#endif
+
+        if(state->fd >= 0){
+		close(state->fd);
+		state->fd = -1;
+        }
+
+        return 0;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/mcast.h

+/* 
+ * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "net_user.h"
+
+struct mcast_data {
+	char *addr;
+	unsigned short port;
+	void *mcast_addr;
+	int ttl;
+	unsigned char hwaddr[ETH_ADDR_LEN];
+	int hw_setup;
+	void *dev;
+};
+
+extern struct net_user_info mcast_user_info;
+
+extern int mcast_user_write(int fd, void *buf, int len, 
+			    struct mcast_data *pri);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/mcast_kern.c

+/*
+ * user-mode-linux networking multicast transport
+ * Copyright (C) 2001 by Harald Welte <laforge@gnumonks.org>
+ *
+ * based on the existing uml-networking code, which is
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and 
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ *
+ * Licensed under the GPL.
+ */
+
+#include "linux/kernel.h"
+#include "linux/init.h"
+#include "linux/netdevice.h"
+#include "linux/etherdevice.h"
+#include "linux/in.h"
+#include "linux/inet.h"
+#include "net_kern.h"
+#include "net_user.h"
+#include "mcast.h"
+#include "mcast_kern.h"
+
+struct mcast_data mcast_priv[MAX_UML_NETDEV] = {
+	[ 0 ... MAX_UML_NETDEV - 1 ] =
+	{
+		addr:		"239.192.168.1",
+		port:		1102,
+		ttl:		1,
+	}
+};
+
+void mcast_init(struct net_device *dev, int index)
+{
+	struct uml_net_private *pri;
+	struct mcast_data *dpri;
+
+	init_etherdev(dev, 0);
+	pri = dev->priv;
+	dpri = (struct mcast_data *) pri->user;
+	*dpri = mcast_priv[index];
+	printk("mcast backend ");
+	printk("multicast adddress: %s:%u, TTL:%u ",
+	       dpri->addr, dpri->port, dpri->ttl);
+
+	printk("\n");
+}
+
+static unsigned short mcast_protocol(struct sk_buff *skb)
+{
+	return eth_type_trans(skb, skb->dev);
+}
+
+static int mcast_read(int fd, struct sk_buff **skb, struct uml_net_private *lp)
+{
+	*skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
+	if(*skb == NULL) return(-ENOMEM);
+	return(net_recvfrom(fd, (*skb)->mac.raw, 
+			    (*skb)->dev->mtu + ETH_HEADER_OTHER));
+}
+
+static int mcast_write(int fd, struct sk_buff **skb,
+			struct uml_net_private *lp)
+{
+	return mcast_user_write(fd, (*skb)->data, (*skb)->len, 
+				 (struct mcast_data *) &lp->user);
+}
+
+static struct net_kern_info mcast_kern_info = {
+	init:			mcast_init,
+	protocol:		mcast_protocol,
+	read:			mcast_read,
+	write:			mcast_write,
+};
+
+static int mcast_count = 0;
+
+int mcast_setup(char *str, struct uml_net *dev)
+{
+	int err, n = mcast_count;
+	int num = 0;
+	char *p1, *p2;
+
+	dev->user = &mcast_user_info;
+	dev->kern = &mcast_kern_info;
+	dev->private_size = sizeof(struct mcast_data);
+	dev->transport_index = mcast_count++;
+
+	/* somewhat more sophisticated parser, needed for in_aton */
+
+	p1 = str;
+	if (*str == ',')
+		p1++;
+	while (p1 && *p1) {
+		if ((p2 = strchr(p1, ',')))
+			*p2++ = '\0';
+		if (strlen(p1) > 0) {
+			switch (num) {
+			case 0:
+				/* First argument: Ethernet address */
+				err = setup_etheraddr(p1, dev->mac);
+				if (!err) 
+					dev->have_mac = 1;
+				break;
+			case 1:
+				/* Second argument: Multicast group */
+				mcast_priv[n].addr = p1;
+				break;
+			case 2:
+				/* Third argument: Port number */
+				mcast_priv[n].port = 
+					htons(simple_strtoul(p1, NULL, 10));
+				break;
+			case 3:
+				/* Fourth argument: TTL */
+				mcast_priv[n].ttl = 
+						simple_strtoul(p1, NULL, 10);
+				break;
+			}
+		}
+		p1 = p2;
+		num++;
+	}
+
+	printk(KERN_INFO "Configured mcast device: %s:%u-%u\n",
+		mcast_priv[n].addr, mcast_priv[n].port,
+		mcast_priv[n].ttl);
+
+	return(0);
+}
+
+static struct transport mcast_transport = {
+	list :	LIST_HEAD_INIT(mcast_transport.list),
+	name :	"mcast",
+	setup : mcast_setup
+};
+
+static int register_mcast(void)
+{
+	register_transport(&mcast_transport);
+	return(1);
+}
+
+__initcall(register_mcast);
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/mcast_kern.h

+#ifndef __UM_MCAST_KERN_H
+#define __UM_MCAST_KERN_H
+
+#include "net_kern.h"
+
+extern int mcast_setup(char *arg, struct uml_net *dev);
+
+#endif

arch/um/drivers/mcast_user.c

+/*
+ * user-mode-linux networking multicast transport
+ * Copyright (C) 2001 by Harald Welte <laforge@gnumonks.org>
+ *
+ * based on the existing uml-networking code, which is
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and 
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ *
+ * Licensed under the GPL.
+ *
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <linux/inet.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include "net_user.h"
+#include "mcast.h"
+#include "kern_util.h"
+#include "user_util.h"
+#include "user.h"
+
+#define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
+
+static struct sockaddr_in *new_addr(char *addr, unsigned short port)
+{
+	struct sockaddr_in *sin;
+
+	sin = um_kmalloc(sizeof(struct sockaddr_in));
+	if(sin == NULL){
+		printk("new_addr: allocation of sockaddr_in failed\n");
+		return(NULL);
+	}
+	sin->sin_family = AF_INET;
+	sin->sin_addr.s_addr = in_aton(addr);
+	sin->sin_port = port;
+	return(sin);
+}
+
+static void mcast_user_init(void *data, void *dev)
+{
+	struct mcast_data *pri = data;
+
+	pri->mcast_addr = new_addr(pri->addr, pri->port);
+	pri->dev = dev;
+}
+
+static int mcast_open(void *data)
+{
+	struct mcast_data *pri = data;
+	struct sockaddr_in *sin = pri->mcast_addr;
+	struct ip_mreq mreq;
+	int fd, yes = 1;
+
+
+	if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) {
+		fd = -EINVAL;
+		goto out;
+	}
+
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
+		printk("mcast_open : data socket failed, errno = %d\n", 
+		       errno);
+		fd = -ENOMEM;
+		goto out;
+	}
+
+	if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
+		printk("mcast_open: SO_REUSEADDR failed, errno = %d\n",
+			errno);
+		close(fd);
+		fd = -EINVAL;
+		goto out;
+	}
+
+	/* set ttl according to config */
+	if (setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &pri->ttl,
+		       sizeof(pri->ttl)) < 0) {
+		printk("mcast_open: IP_MULTICAST_TTL failed, error = %d\n",
+			errno);
+		close(fd);
+		fd = -EINVAL;
+		goto out;
+	}
+
+	/* set LOOP, so data does get fed back to local sockets */
+	if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
+		printk("mcast_open: IP_MULTICAST_LOOP failed, error = %d\n",
+			errno);
+		close(fd);
+		fd = -EINVAL;
+		goto out;
+	}
+
+	/* bind socket to mcast address */
+	if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) {
+		printk("mcast_open : data bind failed, errno = %d\n", errno);
+		close(fd);
+		fd = -EINVAL;
+		goto out;
+	}		
+	
+	/* subscribe to the multicast group */
+	mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr;
+	mreq.imr_interface.s_addr = 0;
+	if (setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, 
+		       &mreq, sizeof(mreq)) < 0) {
+		printk("mcast_open: IP_ADD_MEMBERSHIP failed, error = %d\n",
+			errno);
+		printk("There appears not to be a multicast-capable network "
+		       "interface on the host.\n");
+		printk("eth0 should be configured in order to use the "
+		       "multicast transport.\n");
+		close(fd);
+		fd = -EINVAL;
+	}
+
+ out:
+	return(fd);
+}
+
+static void mcast_close(int fd, void *data)
+{
+	struct ip_mreq mreq;
+	struct mcast_data *pri = data;
+	struct sockaddr_in *sin = pri->mcast_addr;
+
+	mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr;
+	mreq.imr_interface.s_addr = 0;
+	if (setsockopt(fd, SOL_IP, IP_DROP_MEMBERSHIP,
+		       &mreq, sizeof(mreq)) < 0) {
+		printk("mcast_open: IP_DROP_MEMBERSHIP failed, error = %d\n",
+			errno);
+	}
+
+	close(fd);
+}
+
+int mcast_user_write(int fd, void *buf, int len, struct mcast_data *pri)
+{
+	struct sockaddr_in *data_addr = pri->mcast_addr;
+
+	return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+}
+
+static int mcast_set_mtu(int mtu, void *data)
+{
+	return(mtu);
+}
+
+struct net_user_info mcast_user_info = {
+	init:		mcast_user_init,
+	open:		mcast_open,
+	close:	 	mcast_close,
+	remove:	 	NULL,
+	set_mtu:	mcast_set_mtu,
+	add_address:	NULL,
+	delete_address: NULL,
+	max_packet:	MAX_PACKET - ETH_HEADER_OTHER
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/mconsole_kern.c

+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/kernel.h"
+#include "linux/slab.h"
+#include "linux/init.h"
+#include "linux/notifier.h"
+#include "linux/reboot.h"
+#include "linux/utsname.h"
+#include "linux/ctype.h"
+#include "linux/interrupt.h"
+#include "linux/sysrq.h"
+#include "linux/tqueue.h"
+#include "linux/module.h"
+#include "linux/proc_fs.h"
+#include "asm/irq.h"
+#include "asm/uaccess.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "kern.h"
+#include "mconsole.h"
+#include "mconsole_kern.h"
+#include "irq_user.h"
+#include "init.h"
+#include "os.h"
+#include "umid.h"
+
+static int do_unlink_socket(struct notifier_block *notifier, 
+			    unsigned long what, void *data)
+{
+	return(mconsole_unlink_socket());
+}
+
+
+static struct notifier_block reboot_notifier = {
+	notifier_call:		do_unlink_socket,
+	priority:		0,
+};
+
+LIST_HEAD(mc_requests);
+
+void mc_task_proc(void *unused)
+{
+	struct mconsole_entry *req;
+	unsigned long flags;
+	int done;
+
+	do {
+		save_flags(flags);
+		req = list_entry(mc_requests.next, struct mconsole_entry, 
+				 list);
+		list_del(&req->list);
+		done = list_empty(&mc_requests);
+		restore_flags(flags);
+		req->request.cmd->handler(&req->request);
+		kfree(req);
+	} while(!done);
+}
+
+struct tq_struct mconsole_task = {
+	routine:	mc_task_proc,
+	data: 		NULL
+};
+
+void mconsole_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int fd;
+	struct mconsole_entry *new;
+	struct mc_request req;
+
+	fd = (int) dev_id;
+	while (mconsole_get_request(fd, &req)){
+		if(req.cmd->as_interrupt) (*req.cmd->handler)(&req);
+		else {
+			new = kmalloc(sizeof(req), GFP_ATOMIC);
+			if(new == NULL)
+				mconsole_reply(&req, "Out of memory", 1, 0);
+			else {
+				new->request = req;
+				list_add(&new->list, &mc_requests);
+			}
+		}
+	}
+	if(!list_empty(&mc_requests)) schedule_task(&mconsole_task);
+	reactivate_fd(fd, MCONSOLE_IRQ);
+}
+
+void mconsole_version(struct mc_request *req)
+{
+	char version[256];
+
+	sprintf(version, "%s %s %s %s %s", system_utsname.sysname, 
+		system_utsname.nodename, system_utsname.release, 
+		system_utsname.version, system_utsname.machine);
+	mconsole_reply(req, version, 0, 0);
+}
+
+#define UML_MCONSOLE_HELPTEXT \
+"Commands:
+    version - Get kernel version
+    help - Print this message
+    halt - Halt UML
+    reboot - Reboot UML
+    config <dev>=<config> - Add a new device to UML; 
+	same syntax as command line
+    remove <dev> - Remove a device from UML
+    sysrq <letter> - Performs the SysRq action controlled by the letter
+    cad - invoke the Ctl-Alt-Del handler
+"
+
+void mconsole_help(struct mc_request *req)
+{
+	mconsole_reply(req, UML_MCONSOLE_HELPTEXT, 0, 0);
+}
+
+void mconsole_halt(struct mc_request *req)
+{
+	mconsole_reply(req, "", 0, 0);
+	machine_halt();
+}
+
+void mconsole_reboot(struct mc_request *req)
+{
+	mconsole_reply(req, "", 0, 0);
+	machine_restart(NULL);
+}
+
+extern void ctrl_alt_del(void);
+
+void mconsole_cad(struct mc_request *req)
+{
+	mconsole_reply(req, "", 0, 0);
+	ctrl_alt_del();
+}
+
+void mconsole_go(struct mc_request *req)
+{
+	mconsole_reply(req, "Not stopped", 1, 0);
+}
+
+void mconsole_stop(struct mc_request *req)
+{
+	deactivate_fd(req->originating_fd, MCONSOLE_IRQ);
+	os_set_fd_block(req->originating_fd, 1);
+	mconsole_reply(req, "", 0, 0);
+	while(mconsole_get_request(req->originating_fd, req)){
+		if(req->cmd->handler == mconsole_go) break;
+		(*req->cmd->handler)(req);
+	}
+	os_set_fd_block(req->originating_fd, 0);
+	reactivate_fd(req->originating_fd, MCONSOLE_IRQ);
+	mconsole_reply(req, "", 0, 0);
+}
+
+LIST_HEAD(mconsole_devices);
+
+void mconsole_register_dev(struct mc_device *new)
+{
+	list_add(&new->list, &mconsole_devices);
+}
+
+static struct mc_device *mconsole_find_dev(char *name)
+{
+	struct list_head *ele;
+	struct mc_device *dev;
+
+	list_for_each(ele, &mconsole_devices){
+		dev = list_entry(ele, struct mc_device, list);
+		if(!strncmp(name, dev->name, strlen(dev->name)))
+			return(dev);
+	}
+	return(NULL);
+}
+
+void mconsole_config(struct mc_request *req)
+{
+	struct mc_device *dev;
+	char *ptr = req->request.data;
+	int err;
+
+	ptr += strlen("config");
+	while(isspace(*ptr)) ptr++;
+	dev = mconsole_find_dev(ptr);
+	if(dev == NULL){
+		mconsole_reply(req, "Bad configuration option", 1, 0);
+		return;
+	}
+	err = (*dev->config)(&ptr[strlen(dev->name)]);
+	mconsole_reply(req, "", err, 0);
+}
+
+void mconsole_remove(struct mc_request *req)
+{
+	struct mc_device *dev;	
+	char *ptr = req->request.data;
+	int err;
+
+	ptr += strlen("remove");
+	while(isspace(*ptr)) ptr++;
+	dev = mconsole_find_dev(ptr);
+	if(dev == NULL){
+		mconsole_reply(req, "Bad remove option", 1, 0);
+		return;
+	}
+	err = (*dev->remove)(&ptr[strlen(dev->name)]);
+	mconsole_reply(req, "", err, 0);
+}
+
+#ifdef CONFIG_MAGIC_SYSRQ
+void mconsole_sysrq(struct mc_request *req)
+{
+	char *ptr = req->request.data;
+
+	ptr += strlen("sysrq");
+	while(isspace(*ptr)) ptr++;
+
+	handle_sysrq(*ptr, &current->thread.regs, NULL);
+	mconsole_reply(req, "", 0, 0);
+}
+#else
+void mconsole_sysrq(struct mc_request *req)
+{
+	mconsole_reply(req, "Sysrq not compiled in", 1, 0);
+}
+#endif
+
+static char *notify_socket = NULL;
+
+int mconsole_init(void)
+{
+	int err, sock;
+	char file[256];
+
+	if(umid_file_name("mconsole", file, sizeof(file))) return(-1);
+	snprintf(mconsole_socket_name, sizeof(file), "%s", file);
+
+	sock = create_unix_socket(file, sizeof(file));
+	if (sock < 0){
+		printk("Failed to initialize management console\n");
+		return(1);
+	}
+
+	register_reboot_notifier(&reboot_notifier);
+
+	err = um_request_irq(MCONSOLE_IRQ, sock, IRQ_READ, mconsole_interrupt,
+			     SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
+			     "mconsole", (void *)sock);
+	if (err){
+		printk("Failed to get IRQ for management console\n");
+		return(1);
+	}
+
+	if(notify_socket != NULL){
+		notify_socket = uml_strdup(notify_socket);
+		if(notify_socket != NULL)
+			mconsole_notify(notify_socket, MCONSOLE_SOCKET,
+					mconsole_socket_name, 
+					strlen(mconsole_socket_name) + 1);
+		else printk(KERN_ERR "mconsole_setup failed to strdup "
+			    "string\n");
+	}
+
+	printk("mconsole (version %d) initialized on %s\n", 
+	       MCONSOLE_VERSION, mconsole_socket_name);
+	return(0);
+}
+
+__initcall(mconsole_init);
+
+static int write_proc_mconsole(struct file *file, const char *buffer,
+			       unsigned long count, void *data)
+{
+	char *buf;
+
+	buf = kmalloc(count + 1, GFP_KERNEL);
+	if(buf == NULL) 
+		return(-ENOMEM);
+
+	if(copy_from_user(buf, buffer, count))
+		return(-EFAULT);
+	buf[count] = '\0';
+
+	mconsole_notify(notify_socket, MCONSOLE_USER_NOTIFY, buf, count);
+	return(count);
+}
+
+static int create_proc_mconsole(void)
+{
+	struct proc_dir_entry *ent;
+
+	if(notify_socket == NULL) return(0);
+
+	ent = create_proc_entry("mconsole", S_IFREG | 0200, NULL);
+	if(ent == NULL){
+		printk("create_proc_mconsole : create_proc_entry failed\n");
+		return(0);
+	}
+
+	ent->read_proc = NULL;
+	ent->write_proc = write_proc_mconsole;
+	return(0);
+}
+
+__initcall(create_proc_mconsole);
+
+#define NOTIFY "=notify:"
+
+static int mconsole_setup(char *str)
+{
+	if(!strncmp(str, NOTIFY, strlen(NOTIFY))){
+		str += strlen(NOTIFY);
+		notify_socket = str;
+	}
+	else printk(KERN_ERR "mconsole_setup : Unknown option - '%s'\n", str);
+	return(1);
+}
+
+__setup("mconsole", mconsole_setup);
+
+__uml_help(mconsole_setup,
+"mconsole=notify:<socket>\n"
+"    Requests that the mconsole driver send a message to the named Unix\n"
+"    socket containing the name of the mconsole socket.  This also serves\n"
+"    to notify outside processes when UML has booted far enough to respond\n"
+"    to mconsole requests.\n\n"
+);
+
+static int notify_panic(struct notifier_block *self, unsigned long unused1,
+			void *ptr)
+{
+	char *message = ptr;
+
+	if(notify_socket == NULL) return(0);
+
+	mconsole_notify(notify_socket, MCONSOLE_PANIC, message, 
+			strlen(message) + 1);
+	return(0);
+}
+
+static struct notifier_block panic_exit_notifier = {
+	notifier_call :		notify_panic,
+	next :			NULL,
+	priority :		1
+};
+
+static int add_notifier(void)
+{
+	notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+	return(0);
+}
+
+__initcall(add_notifier);
+
+char *mconsole_notify_socket(void)
+{
+	return(notify_socket);
+}
+
+EXPORT_SYMBOL(mconsole_notify_socket);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/mconsole_user.c

+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include "user.h"
+#include "mconsole.h"
+#include "umid.h"
+
+static struct mconsole_command commands[] = {
+	{ "version", mconsole_version, 1 },
+	{ "halt", mconsole_halt, 0 },
+	{ "reboot", mconsole_reboot, 0 },
+	{ "config", mconsole_config, 0 },
+	{ "remove", mconsole_remove, 0 },
+	{ "sysrq", mconsole_sysrq, 1 },
+	{ "help", mconsole_help, 1 },
+	{ "cad", mconsole_cad, 1 },
+	{ "stop", mconsole_stop, 0 },
+	{ "go", mconsole_go, 1 },
+};
+
+char mconsole_socket_name[256];
+
+int mconsole_reply_v0(struct mc_request *req, char *reply)
+{
+        struct iovec iov;
+        struct msghdr msg;
+
+        iov.iov_base = reply;
+        iov.iov_len = strlen(reply);
+
+        msg.msg_name = &(req->origin);
+        msg.msg_namelen = req->originlen;
+        msg.msg_iov = &iov;
+        msg.msg_iovlen = 1;
+        msg.msg_control = NULL;
+        msg.msg_controllen = 0;
+        msg.msg_flags = 0;
+
+        return sendmsg(req->originating_fd, &msg, 0);
+}
+
+static struct mconsole_command *mconsole_parse(struct mc_request *req)
+{
+	struct mconsole_command *cmd;
+	int i;
+
+	for(i=0;i<sizeof(commands)/sizeof(commands[0]);i++){
+		cmd = &commands[i];
+		if(!strncmp(req->request.data, cmd->command, 
+			    strlen(cmd->command))){
+			return(cmd);
+		}
+	}
+	return(NULL);
+}
+
+#define MIN(a,b) ((a)<(b) ? (a):(b))
+
+#define STRINGX(x) #x
+#define STRING(x) STRINGX(x)
+
+int mconsole_get_request(int fd, struct mc_request *req)
+{
+	int len;
+
+	req->originlen = sizeof(req->origin);
+	req->len = recvfrom(fd, &req->request, sizeof(req->request), 0,
+			    (struct sockaddr *) req->origin, &req->originlen);
+	if (req->len < 0)
+		return 0;
+
+	req->originating_fd = fd;
+
+	if(req->request.magic != MCONSOLE_MAGIC){
+		/* Unversioned request */
+		len = MIN(sizeof(req->request.data) - 1, 
+			  strlen((char *) &req->request));
+		memmove(req->request.data, &req->request, len);
+		req->request.data[len] = '\0';
+
+		req->request.magic = MCONSOLE_MAGIC;
+		req->request.version = 0;
+		req->request.len = len;
+
+		mconsole_reply_v0(req, "ERR Version 0 mconsole clients are "
+				  "not supported by this driver");
+		return(0);
+	}
+
+	if(req->request.len >= MCONSOLE_MAX_DATA){
+		mconsole_reply(req, "Request too large", 1, 0);
+		return(0);
+	}
+	if(req->request.version != MCONSOLE_VERSION){
+		mconsole_reply(req, "This driver only supports version " 
+                               STRING(MCONSOLE_VERSION) " clients", 1, 0);
+	}
+	
+	req->request.data[req->request.len] = '\0';
+	req->cmd = mconsole_parse(req);
+	if(req->cmd == NULL){
+		mconsole_reply(req, "Unknown command", 1, 0);
+		return(0);
+	}
+
+	return(1);
+}
+
+int mconsole_reply(struct mc_request *req, char *str, int err, int more)
+{
+	struct mconsole_reply reply;
+	int total, len, n;
+
+	total = strlen(str);
+	do {
+		reply.err = err;
+
+		/* err can only be true on the first packet */
+		err = 0;
+
+		len = MIN(total, MCONSOLE_MAX_DATA - 1);
+
+		if(len == total) reply.more = more;
+		else reply.more = 1;
+
+		memcpy(reply.data, str, len);
+		reply.data[len] = '\0';
+		total -= len;
+		reply.len = len + 1;
+
+		len = sizeof(reply) + reply.len - sizeof(reply.data);
+
+		n = sendto(req->originating_fd, &reply, len, 0,
+			   (struct sockaddr *) req->origin, req->originlen);
+
+		if(n < 0) return(-errno);
+	} while(total > 0);
+	return(0);
+}
+
+int mconsole_unlink_socket(void)
+{
+	unlink(mconsole_socket_name);
+	return 0;
+}
+
+static int notify_sock = -1;
+
+int mconsole_notify(char *sock_name, int type, const void *data, int len)
+{
+	struct sockaddr_un target;
+	struct mconsole_notify packet;
+	int n, err;
+
+	if(notify_sock < 0){
+		notify_sock = socket(PF_UNIX, SOCK_DGRAM, 0);
+		if(notify_sock < 0){
+			printk("mconsole_notify - socket failed, errno = %d\n",
+			       errno);
+			return(-errno);
+		}
+	}
+
+	target.sun_family = AF_UNIX;
+	strcpy(target.sun_path, sock_name);
+
+	packet.magic = MCONSOLE_MAGIC;
+	packet.version = MCONSOLE_VERSION;
+	packet.type = type;
+	len = (len > sizeof(packet.data)) ? sizeof(packet.data) : len;
+	packet.len = len;
+	memcpy(packet.data, data, len);
+
+	err = 0;
+	len = sizeof(packet) + packet.len - sizeof(packet.data);
+	n = sendto(notify_sock, &packet, len, 0, (struct sockaddr *) &target, 
+		   sizeof(target));
+	if(n < 0){
+		printk("mconsole_notify - sendto failed, errno = %d\n", errno);
+		err = -errno;
+	}
+	return(err);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/null.c

+/* 
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include "chan_user.h"
+#include "os.h"
+
+static int null_chan;
+
+void *null_init(char *str, int device, struct chan_opts *opts)
+{
+	return(&null_chan);
+}
+
+int null_open(int input, int output, int primary, void *d)
+{
+	return(os_open_file(DEV_NULL, of_rdwr(OPENFLAGS()), 0));
+}
+
+int null_read(int fd, char *c_out, void *unused)
+{
+	return(-ENODEV);
+}
+
+void null_free(void *data)
+{
+}
+
+struct chan_ops null_ops = {
+	init:		null_init,
+	open:		null_open,
+	close:		generic_close,
+	read:		null_read,
+	write:		generic_write,
+	console_write:	generic_console_write,
+	window_size:	generic_window_size,
+	free:		null_free,
+	winch:		0,
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/port.h

+/* 
+ * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __PORT_H__
+#define __PORT_H__
+
+extern void *port_data(int port);
+extern int port_wait(void *data);
+extern void port_kern_close(void *d);
+extern int port_connection(int fd, int *socket_out, int *pid_out);
+extern int port_listen_fd(int port);
+extern void port_read(int fd, void *data);
+extern void port_kern_free(void *d);
+extern int port_rcv_fd(int fd);
+extern void port_remove_dev(void *d);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

arch/um/drivers/slip_kern.h

+#ifndef __UM_SLIP_KERN_H
+#define __UM_SLIP_KERN_H
+
+#include "net_kern.h"
+
+extern int slip_setup(char *arg, struct uml_net *dev);
+
+#endif