Merge http://uml.bkbits.net/updates-2.5

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

arch/um/Kconfig

@@ -128,6 +128,7 @@ source "net/Kconfig"
 
 source "fs/Kconfig"
 
+source "lib/Kconfig"
 
 menu "SCSI support"
 

arch/um/kernel/process_kern.c

@@ -190,7 +190,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 
 	current->thread.request.u.thread.proc = fn;
 	current->thread.request.u.thread.arg = arg;
-	p = do_fork(CLONE_VM | flags, 0, NULL, 0, NULL);
+	p = do_fork(CLONE_VM | flags, 0, NULL, 0, NULL, NULL);
 	if(IS_ERR(p)) panic("do_fork failed in kernel_thread");
 	return(p->pid);
 }

arch/um/kernel/signal_kern.c

@@ -16,6 +16,7 @@
 #include "linux/binfmts.h"
 #include "asm/signal.h"
 #include "asm/uaccess.h"
+#include "asm/unistd.h"
 #include "user_util.h"
 #include "kern_util.h"
 #include "signal_kern.h"
@@ -69,6 +70,9 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
 
 	ret = 0;
 	switch(error){
+	case -ERESTART_RESTARTBLOCK:
+		current_thread_info()->restart_block.fn = 
+			do_no_restart_syscall;
 	case -ERESTARTNOHAND:
 		ret = -EINTR;
 		break;
@@ -160,6 +164,10 @@ static int kern_do_signal(struct pt_regs *regs, sigset_t *oldset, int error)
 			PT_REGS_ORIG_SYSCALL(regs) = PT_REGS_SYSCALL_NR(regs);
 			PT_REGS_RESTART_SYSCALL(regs);
 		}
+		else if(PT_REGS_SYSCALL_RET(regs) == -ERESTART_RESTARTBLOCK){
+			PT_REGS_SYSCALL_RET(regs) = __NR_restart_syscall;
+			PT_REGS_RESTART_SYSCALL(regs);
+ 		}
 	}
 
 	/* This closes a way to execute a system call on the host.  If

arch/um/kernel/sys_call_table.c

@@ -8,10 +8,12 @@
 #include "linux/version.h"
 #include "linux/sys.h"
 #include "linux/swap.h"
+#include "linux/sysctl.h"
 #include "asm/signal.h"
 #include "sysdep/syscalls.h"
 #include "kern_util.h"
 
+extern syscall_handler_t sys_restart_syscall;
 extern syscall_handler_t sys_ni_syscall;
 extern syscall_handler_t sys_exit;
 extern syscall_handler_t sys_fork;
@@ -125,10 +127,8 @@ extern syscall_handler_t sys_ni_syscall;
 extern syscall_handler_t sys_adjtimex;
 extern syscall_handler_t sys_mprotect;
 extern syscall_handler_t sys_sigprocmask;
-extern syscall_handler_t sys_create_module;
 extern syscall_handler_t sys_init_module;
 extern syscall_handler_t sys_delete_module;
-extern syscall_handler_t sys_get_kernel_syms;
 extern syscall_handler_t sys_quotactl;
 extern syscall_handler_t sys_getpgid;
 extern syscall_handler_t sys_fchdir;
@@ -162,7 +162,6 @@ extern syscall_handler_t sys_mremap;
 extern syscall_handler_t sys_setresuid16;
 extern syscall_handler_t sys_getresuid16;
 extern syscall_handler_t sys_ni_syscall;
-extern syscall_handler_t sys_query_module;
 extern syscall_handler_t sys_poll;
 extern syscall_handler_t sys_nfsservctl;
 extern syscall_handler_t sys_setresgid16;
@@ -235,9 +234,10 @@ extern syscall_handler_t sys_epoll_create;
 extern syscall_handler_t sys_epoll_ctl;
 extern syscall_handler_t sys_epoll_wait;
 extern syscall_handler_t sys_remap_file_pages;
+extern syscall_handler_t sys_set_tid_address;
 
 #if CONFIG_NFSD
-#define NFSSERVCTL sys_nfsserctl
+#define NFSSERVCTL sys_nfsservctl
 #else
 #define NFSSERVCTL sys_ni_syscall
 #endif
@@ -246,7 +246,7 @@ extern syscall_handler_t um_mount;
 extern syscall_handler_t um_time;
 extern syscall_handler_t um_stime;
 
-#define LAST_GENERIC_SYSCALL __NR_remap_file_pages
+#define LAST_GENERIC_SYSCALL __NR_set_tid_address
 
 #if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL
 #define LAST_SYSCALL LAST_GENERIC_SYSCALL
@@ -255,7 +255,7 @@ extern syscall_handler_t um_stime;
 #endif
 
 syscall_handler_t *sys_call_table[] = {
-	[ 0 ] = sys_ni_syscall,
+	[ __NR_restart_syscall ] = sys_restart_syscall,
 	[ __NR_exit ] = sys_exit,
 	[ __NR_fork ] = sys_fork,
 	[ __NR_read ] = (syscall_handler_t *) sys_read,
@@ -384,10 +384,10 @@ syscall_handler_t *sys_call_table[] = {
 	[ __NR_adjtimex ] = sys_adjtimex,
 	[ __NR_mprotect ] = sys_mprotect,
 	[ __NR_sigprocmask ] = sys_sigprocmask,
-	[ __NR_create_module ] = sys_create_module,
+	[ __NR_create_module ] = sys_ni_syscall,
 	[ __NR_init_module ] = sys_init_module,
 	[ __NR_delete_module ] = sys_delete_module,
-	[ __NR_get_kernel_syms ] = sys_get_kernel_syms,
+	[ __NR_get_kernel_syms ] = sys_ni_syscall,
 	[ __NR_quotactl ] = sys_quotactl,
 	[ __NR_getpgid ] = sys_getpgid,
 	[ __NR_fchdir ] = sys_fchdir,
@@ -424,7 +424,7 @@ syscall_handler_t *sys_call_table[] = {
 	[ __NR_setresuid ] = sys_setresuid16,
 	[ __NR_getresuid ] = sys_getresuid16,
 	[ __NR_vm86 ] = sys_ni_syscall,
-	[ __NR_query_module ] = sys_query_module,
+	[ __NR_query_module ] = sys_ni_syscall,
 	[ __NR_poll ] = sys_poll,
 	[ __NR_nfsservctl ] = NFSSERVCTL,
 	[ __NR_setresgid ] = sys_setresgid16,
@@ -489,6 +489,7 @@ syscall_handler_t *sys_call_table[] = {
 	[ __NR_epoll_ctl ] = sys_epoll_ctl,
 	[ __NR_epoll_wait ] = sys_epoll_wait,
         [ __NR_remap_file_pages ] = sys_remap_file_pages,
+        [ __NR_set_tid_address ] = sys_set_tid_address,
 
 	ARCH_SYSCALLS
 	[ LAST_SYSCALL + 1 ... NR_syscalls ] = 

arch/um/kernel/syscall_kern.c

@@ -33,7 +33,7 @@ long sys_fork(void)
 	struct task_struct *p;
 
 	current->thread.forking = 1;
-        p = do_fork(SIGCHLD, 0, NULL, 0, NULL);
+        p = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL);
 	current->thread.forking = 0;
 	return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
 }
@@ -43,7 +43,7 @@ long sys_clone(unsigned long clone_flags, unsigned long newsp)
 	struct task_struct *p;
 
 	current->thread.forking = 1;
-	p = do_fork(clone_flags, newsp, NULL, 0, NULL);
+	p = do_fork(clone_flags, newsp, NULL, 0, NULL, NULL);
 	current->thread.forking = 0;
 	return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
 }
@@ -53,7 +53,7 @@ long sys_vfork(void)
 	struct task_struct *p;
 
 	current->thread.forking = 1;
-	p = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL);
+	p = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL, NULL);
 	current->thread.forking = 0;
 	return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
 }
@@ -182,7 +182,11 @@ int sys_ipc (uint call, int first, int second,
 
 	switch (call) {
 	case SEMOP:
-		return sys_semop (first, (struct sembuf *)ptr, second);
+		return sys_semtimedop(first, (struct sembuf *) ptr, second, 
+				      NULL);
+	case SEMTIMEDOP:
+		return sys_semtimedop(first, (struct sembuf *) ptr, second,
+				      (const struct timespec *) fifth);
 	case SEMGET:
 		return sys_semget (first, second, third);
 	case SEMCTL: {

arch/um/kernel/sysrq.c

@@ -19,8 +19,8 @@
  
 #ifdef CONFIG_MODULES
 
-extern struct module *module_list;
-extern struct module kernel_module;
+/* FIXME: Accessed without a lock --RR */
+extern struct list_head modules;
 
 static inline int kernel_text_address(unsigned long addr)
 {
@@ -31,11 +31,11 @@ static inline int kernel_text_address(unsigned long addr)
 	    addr <= (unsigned long) &_etext)
 		return 1;
 
-	for (mod = module_list; mod != &kernel_module; mod = mod->next) {
+	list_for_each_entry(mod, &modules, list) {
 		/* mod_bound tests for addr being inside the vmalloc'ed
 		 * module area. Of course it'd be better to test only
 		 * for the .text subset... */
-		if (mod_bound(addr, 0, mod)) {
+		if (mod_bound((void *) addr, 0, mod)) {
 			retval = 1;
 			break;
 		}

arch/um/sys-i386/Makefile

-obj-y = bugs.o checksum.o extable.o fault.o ksyms.o ldt.o \
+obj-y = bugs.o checksum.o extable.o fault.o ksyms.o ldt.o module.o \
 	ptrace.o ptrace_user.o semaphore.o sigcontext.o syscalls.o sysrq.o
 
 obj-$(CONFIG_HIGHMEM) += highmem.o
@@ -6,28 +6,26 @@ obj-$(CONFIG_HIGHMEM) += highmem.o
 export-objs = ksyms.o
 
 USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o
-USER_OBJS := $(foreach file,$(USER_OBJS),arch/um/sys-i386/$(file))
+USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
 
-SYMLINKS = semaphore.c checksum.S extable.c highmem.c
+SYMLINKS = semaphore.c extable.c highmem.c module.c
 
-$(USER_OBJS) : %.o: %.c
-	$(CC) $(CFLAGS_$@) $(USER_CFLAGS) -c -o $@ $<
+semaphore.c-dir = kernel
+extable.c-dir = mm
+highmem.c-dir = mm
+module.c-dir = kernel
 
-arch/um/sys-i386/checksum.S: 
-	-rm -f $@
-	-ln -s $(TOPDIR)/arch/i386/lib/$(notdir $@) $@
+define make_link
+	-rm -f $1
+	ln -sf $(TOPDIR)/arch/i386/$($(notdir $1)-dir)/$(notdir $1) $1
+endef
 
-arch/um/sys-i386/semaphore.c:
-	-rm -f $@
-	-ln -s $(TOPDIR)/arch/i386/kernel/$(notdir $@) $@
+$(USER_OBJS) : %.o: %.c
+	$(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
 
-arch/um/sys-i386/extable.c:
-	-rm -f $@
-	-ln -s $(TOPDIR)/arch/i386/mm/$(notdir $@) $@
+$(foreach f,$(SYMLINKS),$(src)/$f): 
+	$(call make_link,$@)
 
-arch/um/sys-i386/highmem.c:
-	-rm -f $@
-	-ln -s $(TOPDIR)/arch/i386/mm/$(notdir $@) $@
 clean:
 	$(MAKE) -C util clean
 

arch/um/uml.lds.S

@@ -38,6 +38,7 @@ SECTIONS
   __ex_table : { *(__ex_table) }
   __stop___ex_table = .;
 
+  . = ALIGN(64);
   __start___ksymtab = .;	/* Kernel symbol table */
   __ksymtab : { *(__ksymtab) }
   __stop___ksymtab = .;
@@ -58,18 +59,27 @@ SECTIONS
   __uml_setup_start = .;
   .uml.setup.init : { *(.uml.setup.init) }
   __uml_setup_end = .;
+	
   __uml_help_start = .;
   .uml.help.init : { *(.uml.help.init) }
   __uml_help_end = .;
+	
   __uml_postsetup_start = .;
   .uml.postsetup.init : { *(.uml.postsetup.init) }
   __uml_postsetup_end = .;
+	
   __setup_start = .;
   .init.setup : { *(.init.setup) }
   __setup_end = .;
+
+  __start___param = .;
+  __param : { *(__param) }
+  __stop___param = .;
+
   __per_cpu_start = . ; 
   .data.percpu : { *(.data.percpu) }
   __per_cpu_end = . ;
+	
   __initcall_start = .;
   .initcall.init : {
 	*(.initcall1.init) 

include/asm-um/pgtable.h

@@ -373,15 +373,15 @@ static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
 }
 
 /* Find an entry in the third-level page table.. */ 
-#define __pte_offset(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define __pte_offset(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
 #define pte_offset_kernel(dir, address) \
 	((pte_t *) pmd_page_kernel(*(dir)) +  __pte_offset(address))
 #define pte_offset_map(dir, address) \
         ((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + __pte_offset(address))
 #define pte_offset_map_nested(dir, address) \
 	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + __pte_offset(address))
-#define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
-#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
+#define pte_unmap(pte) kunmap_atomic((pte), KM_PTE0)
+#define pte_unmap_nested(pte) kunmap_atomic((pte), KM_PTE1)
 
 #if defined(CONFIG_HIGHPTE) && defined(CONFIG_HIGHMEM4G)
 typedef u32 pte_addr_t;

include/asm-um/thread_info.h

@@ -20,14 +20,9 @@ struct thread_info {
 	mm_segment_t		addr_limit;	/* thread address space:
 					 	   0-0xBFFFFFFF for user
 						   0-0xFFFFFFFF for kernel */
+	struct restart_block    restart_block;
 };
 
-/*
- * macros/functions for gaining access to the thread information structure
- *
- * preempt_count needs to be 1 initially, until the scheduler is functional.
- */
-
 #define INIT_THREAD_INFO(tsk)			\
 {						\
 	task:		&tsk,			\
@@ -36,6 +31,9 @@ struct thread_info {
 	cpu:		0,			\
 	preempt_count:	1,			\
 	addr_limit:	KERNEL_DS,		\
+	restart_block:  {			\
+		fn:  do_no_restart_syscall,	\
+	},					\
 }
 
 #define init_thread_info	(init_thread_union.thread_info)

include/asm-um/uaccess.h

@@ -164,7 +164,7 @@ static inline int clear_user(void *mem, int len)
 extern int __do_strnlen_user(const char *str, unsigned long n,
 			     void **fault_addr, void **fault_catcher);
 
-static inline int strnlen_user(void *str, int len)
+static inline int strnlen_user(const void *str, int len)
 {
 	return(__do_strnlen_user(str, len,
 				 &current->thread.fault_addr,