Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750827AbWAOUtr (ORCPT ); Sun, 15 Jan 2006 15:49:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750760AbWAOUtT (ORCPT ); Sun, 15 Jan 2006 15:49:19 -0500 Received: from saraswathi.solana.com ([198.99.130.12]:39331 "EHLO saraswathi.solana.com") by vger.kernel.org with ESMTP id S1750753AbWAOUtI (ORCPT ); Sun, 15 Jan 2006 15:49:08 -0500 Message-Id: <200601152139.k0FLdapx027710@ccure.user-mode-linux.org> X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.0.4 To: akpm@osdl.org cc: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, Gennady Sharapov Subject: [PATCH 2/11] UML - Move libc-dependent utility procedures Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 15 Jan 2006 16:39:36 -0500 From: Jeff Dike Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 17055 Lines: 546 From: Gennady Sharapov The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from user_util.c file under os-Linux dir Signed-off-by: Gennady Sharapov Signed-off-by: Jeff Dike Index: linux-2.6.15-mm/arch/um/drivers/fd.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/drivers/fd.c 2006-01-06 21:23:35.000000000 -0500 +++ linux-2.6.15-mm/arch/um/drivers/fd.c 2006-01-06 21:24:14.000000000 -0500 @@ -11,6 +11,7 @@ #include "user.h" #include "user_util.h" #include "chan_user.h" +#include "os.h" struct fd_chan { int fd; Index: linux-2.6.15-mm/arch/um/include/os.h =================================================================== --- linux-2.6.15-mm.orig/arch/um/include/os.h 2006-01-06 21:24:14.000000000 -0500 +++ linux-2.6.15-mm/arch/um/include/os.h 2006-01-06 21:46:20.000000000 -0500 @@ -195,6 +195,8 @@ extern unsigned long long os_usecs(void) /* tt.c * for tt mode only (will be deleted in future...) */ +extern void stop(void); +extern int wait_for_stop(int pid, int sig, int cont_type, void *relay); extern int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x, int must_succeed); extern void forward_pending_sigio(int target); @@ -235,4 +237,12 @@ extern int set_signals(int enable); extern void os_fill_handlinfo(struct kern_handlers h); extern void do_longjmp(void *p, int val); +/* util.c */ +extern void stack_protections(unsigned long address); +extern void task_protections(unsigned long address); +extern int raw(int fd); +extern void setup_machinename(char *machine_out); +extern void setup_hostinfo(void); +extern int setjmp_wrapper(void (*proc)(void *, void *), ...); + #endif Index: linux-2.6.15-mm/arch/um/include/user_util.h =================================================================== --- linux-2.6.15-mm.orig/arch/um/include/user_util.h 2006-01-06 21:24:14.000000000 -0500 +++ linux-2.6.15-mm/arch/um/include/user_util.h 2006-01-06 21:24:14.000000000 -0500 @@ -44,10 +44,6 @@ extern unsigned long brk_start; extern int pty_output_sigio; extern int pty_close_sigio; -extern void stop(void); -extern void stack_protections(unsigned long address); -extern void task_protections(unsigned long address); -extern int wait_for_stop(int pid, int sig, int cont_type, void *relay); extern void *add_signal_handler(int sig, void (*handler)(int)); extern int linux_main(int argc, char **argv); extern void set_cmdline(char *cmd); @@ -55,8 +51,6 @@ extern void input_cb(void (*proc)(void * extern int get_pty(void); extern void *um_kmalloc(int size); extern int switcheroo(int fd, int prot, void *from, void *to, int size); -extern void setup_machinename(char *machine_out); -extern void setup_hostinfo(void); extern void do_exec(int old_pid, int new_pid); extern void tracer_panic(char *msg, ...); extern int detach(int pid, int sig); @@ -70,18 +64,6 @@ extern int cpu_feature(char *what, char extern int arch_handle_signal(int sig, union uml_pt_regs *regs); extern int arch_fixup(unsigned long address, void *sc_ptr); extern void arch_init_thread(void); -extern int setjmp_wrapper(void (*proc)(void *, void *), ...); extern int raw(int fd); #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: - */ Index: linux-2.6.15-mm/arch/um/kernel/Makefile =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/Makefile 2006-01-06 21:24:14.000000000 -0500 +++ linux-2.6.15-mm/arch/um/kernel/Makefile 2006-01-06 21:46:20.000000000 -0500 @@ -10,8 +10,7 @@ obj-y = config.o exec_kern.o exitcode.o init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \ process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \ signal_kern.o smp.o syscall_kern.o sysrq.o time.o \ - time_kern.o tlb.o trap_kern.o uaccess.o um_arch.o umid.o \ - user_util.o + time_kern.o tlb.o trap_kern.o uaccess.o um_arch.o umid.o obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o obj-$(CONFIG_GPROF) += gprof_syms.o @@ -24,7 +23,7 @@ obj-$(CONFIG_MODE_SKAS) += skas/ user-objs-$(CONFIG_TTY_LOG) += tty_log.o -USER_OBJS := $(user-objs-y) config.o time.o tty_log.o user_util.o +USER_OBJS := $(user-objs-y) config.o time.o tty_log.o include arch/um/scripts/Makefile.rules Index: linux-2.6.15-mm/arch/um/kernel/skas/uaccess.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/skas/uaccess.c 2006-01-06 21:23:35.000000000 -0500 +++ linux-2.6.15-mm/arch/um/kernel/skas/uaccess.c 2006-01-06 21:24:14.000000000 -0500 @@ -13,7 +13,7 @@ #include "asm/pgtable.h" #include "asm/uaccess.h" #include "kern_util.h" -#include "user_util.h" +#include "os.h" extern void *um_virt_to_phys(struct task_struct *task, unsigned long addr, pte_t *pte_out); Index: linux-2.6.15-mm/arch/um/kernel/tt/gdb.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/tt/gdb.c 2006-01-06 21:23:35.000000000 -0500 +++ linux-2.6.15-mm/arch/um/kernel/tt/gdb.c 2006-01-06 21:24:14.000000000 -0500 @@ -20,6 +20,7 @@ #include "user_util.h" #include "tt.h" #include "sysdep/thread.h" +#include "os.h" extern int debugger_pid; extern int debugger_fd; Index: linux-2.6.15-mm/arch/um/kernel/tt/ptproxy/ptrace.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/tt/ptproxy/ptrace.c 2006-01-06 21:23:35.000000000 -0500 +++ linux-2.6.15-mm/arch/um/kernel/tt/ptproxy/ptrace.c 2006-01-06 21:24:14.000000000 -0500 @@ -20,6 +20,7 @@ Jeff Dike (jdike@karaya.com) : Modified #include "kern_util.h" #include "ptrace_user.h" #include "tt.h" +#include "os.h" long proxy_ptrace(struct debugger *debugger, int arg1, pid_t arg2, long arg3, long arg4, pid_t child, int *ret) Index: linux-2.6.15-mm/arch/um/kernel/tt/ptproxy/sysdep.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/tt/ptproxy/sysdep.c 2006-01-06 21:23:35.000000000 -0500 +++ linux-2.6.15-mm/arch/um/kernel/tt/ptproxy/sysdep.c 2006-01-06 21:24:14.000000000 -0500 @@ -15,6 +15,7 @@ terms and conditions. #include "ptrace_user.h" #include "user_util.h" #include "user.h" +#include "os.h" int get_syscall(pid_t pid, long *arg1, long *arg2, long *arg3, long *arg4, long *arg5) Index: linux-2.6.15-mm/arch/um/kernel/user_util.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/kernel/user_util.c 2006-01-06 21:23:35.000000000 -0500 +++ /dev/null 1970-01-01 00:00:00.000000000 +0000 @@ -1,174 +0,0 @@ -/* - * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "asm/types.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include "user_util.h" -#include "kern_util.h" -#include "user.h" -#include "mem_user.h" -#include "init.h" -#include "ptrace_user.h" -#include "uml-config.h" - -void stop(void) -{ - while(1) sleep(1000000); -} - -void stack_protections(unsigned long address) -{ - int prot = PROT_READ | PROT_WRITE | PROT_EXEC; - - if(mprotect((void *) address, page_size(), prot) < 0) - panic("protecting stack failed, errno = %d", errno); -} - -void task_protections(unsigned long address) -{ - unsigned long guard = address + page_size(); - unsigned long stack = guard + page_size(); - int prot = 0, pages; - -#ifdef notdef - if(mprotect((void *) stack, page_size(), prot) < 0) - panic("protecting guard page failed, errno = %d", errno); -#endif - pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2; - prot = PROT_READ | PROT_WRITE | PROT_EXEC; - if(mprotect((void *) stack, pages * page_size(), prot) < 0) - panic("protecting stack failed, errno = %d", errno); -} - -int wait_for_stop(int pid, int sig, int cont_type, void *relay) -{ - sigset_t *relay_signals = relay; - int status, ret; - - while(1){ - CATCH_EINTR(ret = waitpid(pid, &status, WUNTRACED)); - if((ret < 0) || - !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){ - if(ret < 0){ - printk("wait failed, errno = %d\n", - errno); - } - else if(WIFEXITED(status)) - printk("process %d exited with status %d\n", - pid, WEXITSTATUS(status)); - else if(WIFSIGNALED(status)) - printk("process %d exited with signal %d\n", - pid, WTERMSIG(status)); - else if((WSTOPSIG(status) == SIGVTALRM) || - (WSTOPSIG(status) == SIGALRM) || - (WSTOPSIG(status) == SIGIO) || - (WSTOPSIG(status) == SIGPROF) || - (WSTOPSIG(status) == SIGCHLD) || - (WSTOPSIG(status) == SIGWINCH) || - (WSTOPSIG(status) == SIGINT)){ - ptrace(cont_type, pid, 0, WSTOPSIG(status)); - continue; - } - else if((relay_signals != NULL) && - sigismember(relay_signals, WSTOPSIG(status))){ - ptrace(cont_type, pid, 0, WSTOPSIG(status)); - continue; - } - else printk("process %d stopped with signal %d\n", - pid, WSTOPSIG(status)); - panic("wait_for_stop failed to wait for %d to stop " - "with %d\n", pid, sig); - } - return(status); - } -} - -int raw(int fd) -{ - struct termios tt; - int err; - - CATCH_EINTR(err = tcgetattr(fd, &tt)); - if(err < 0) - return -errno; - - cfmakeraw(&tt); - - CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt)); - if(err < 0) - return -errno; - - /* XXX tcsetattr could have applied only some changes - * (and cfmakeraw() is a set of changes) */ - return(0); -} - -void setup_machinename(char *machine_out) -{ - struct utsname host; - - uname(&host); -#if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT) - if (!strcmp(host.machine, "x86_64")) { - strcpy(machine_out, "i686"); - return; - } -#endif - strcpy(machine_out, host.machine); -} - -char host_info[(_UTSNAME_LENGTH + 1) * 4 + _UTSNAME_NODENAME_LENGTH + 1]; - -void setup_hostinfo(void) -{ - struct utsname host; - - uname(&host); - sprintf(host_info, "%s %s %s %s %s", host.sysname, host.nodename, - host.release, host.version, host.machine); -} - -int setjmp_wrapper(void (*proc)(void *, void *), ...) -{ - va_list args; - sigjmp_buf buf; - int n; - - n = sigsetjmp(buf, 1); - if(n == 0){ - va_start(args, proc); - (*proc)(&buf, &args); - } - va_end(args); - return(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: - */ Index: linux-2.6.15-mm/arch/um/os-Linux/Makefile =================================================================== --- linux-2.6.15-mm.orig/arch/um/os-Linux/Makefile 2006-01-06 21:24:14.000000000 -0500 +++ linux-2.6.15-mm/arch/um/os-Linux/Makefile 2006-01-06 21:24:14.000000000 -0500 @@ -5,12 +5,12 @@ obj-y = aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \ start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o user_syms.o \ - drivers/ sys-$(SUBARCH)/ + util.o drivers/ sys-$(SUBARCH)/ obj-$(CONFIG_MODE_SKAS) += skas/ USER_OBJS := aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \ - start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o + start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o util.o elf_aux.o: $(ARCH_DIR)/kernel-offsets.h CFLAGS_elf_aux.o += -I$(objtree)/arch/um Index: linux-2.6.15-mm/arch/um/os-Linux/tt.c =================================================================== --- linux-2.6.15-mm.orig/arch/um/os-Linux/tt.c 2006-01-06 21:24:14.000000000 -0500 +++ linux-2.6.15-mm/arch/um/os-Linux/tt.c 2006-01-06 21:46:20.000000000 -0500 @@ -63,6 +63,54 @@ void kill_child_dead(int pid) } while(1); } +void stop(void) +{ + while(1) sleep(1000000); +} + +int wait_for_stop(int pid, int sig, int cont_type, void *relay) +{ + sigset_t *relay_signals = relay; + int status, ret; + + while(1){ + CATCH_EINTR(ret = waitpid(pid, &status, WUNTRACED)); + if((ret < 0) || + !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){ + if(ret < 0){ + printk("wait failed, errno = %d\n", + errno); + } + else if(WIFEXITED(status)) + printk("process %d exited with status %d\n", + pid, WEXITSTATUS(status)); + else if(WIFSIGNALED(status)) + printk("process %d exited with signal %d\n", + pid, WTERMSIG(status)); + else if((WSTOPSIG(status) == SIGVTALRM) || + (WSTOPSIG(status) == SIGALRM) || + (WSTOPSIG(status) == SIGIO) || + (WSTOPSIG(status) == SIGPROF) || + (WSTOPSIG(status) == SIGCHLD) || + (WSTOPSIG(status) == SIGWINCH) || + (WSTOPSIG(status) == SIGINT)){ + ptrace(cont_type, pid, 0, WSTOPSIG(status)); + continue; + } + else if((relay_signals != NULL) && + sigismember(relay_signals, WSTOPSIG(status))){ + ptrace(cont_type, pid, 0, WSTOPSIG(status)); + continue; + } + else printk("process %d stopped with signal %d\n", + pid, WSTOPSIG(status)); + panic("wait_for_stop failed to wait for %d to stop " + "with %d\n", pid, sig); + } + return(status); + } +} + /* *------------------------- * only for tt mode (will be deleted in future...) Index: linux-2.6.15-mm/arch/um/os-Linux/util.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.15-mm/arch/um/os-Linux/util.c 2006-01-06 21:46:42.000000000 -0500 @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "asm/types.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include "user_util.h" +#include "kern_util.h" +#include "user.h" +#include "mem_user.h" +#include "init.h" +#include "ptrace_user.h" +#include "uml-config.h" +#include "os.h" + +void stack_protections(unsigned long address) +{ + int prot = PROT_READ | PROT_WRITE | PROT_EXEC; + + if(mprotect((void *) address, page_size(), prot) < 0) + panic("protecting stack failed, errno = %d", errno); +} + +void task_protections(unsigned long address) +{ + unsigned long guard = address + page_size(); + unsigned long stack = guard + page_size(); + int prot = 0, pages; + +#ifdef notdef + if(mprotect((void *) stack, page_size(), prot) < 0) + panic("protecting guard page failed, errno = %d", errno); +#endif + pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2; + prot = PROT_READ | PROT_WRITE | PROT_EXEC; + if(mprotect((void *) stack, pages * page_size(), prot) < 0) + panic("protecting stack failed, errno = %d", errno); +} + +int raw(int fd) +{ + struct termios tt; + int err; + + CATCH_EINTR(err = tcgetattr(fd, &tt)); + if(err < 0) + return -errno; + + cfmakeraw(&tt); + + CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt)); + if(err < 0) + return -errno; + + /* XXX tcsetattr could have applied only some changes + * (and cfmakeraw() is a set of changes) */ + return(0); +} + +void setup_machinename(char *machine_out) +{ + struct utsname host; + + uname(&host); +#if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT) + if (!strcmp(host.machine, "x86_64")) { + strcpy(machine_out, "i686"); + return; + } +#endif + strcpy(machine_out, host.machine); +} + +char host_info[(_UTSNAME_LENGTH + 1) * 4 + _UTSNAME_NODENAME_LENGTH + 1]; + +void setup_hostinfo(void) +{ + struct utsname host; + + uname(&host); + sprintf(host_info, "%s %s %s %s %s", host.sysname, host.nodename, + host.release, host.version, host.machine); +} + +int setjmp_wrapper(void (*proc)(void *, void *), ...) +{ + va_list args; + sigjmp_buf buf; + int n; + + n = sigsetjmp(buf, 1); + if(n == 0){ + va_start(args, proc); + (*proc)(&buf, &args); + } + va_end(args); + return(n); +} - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/