Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936319AbXHNWCT (ORCPT ); Tue, 14 Aug 2007 18:02:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934768AbXHNVlE (ORCPT ); Tue, 14 Aug 2007 17:41:04 -0400 Received: from saraswathi.solana.com ([198.99.130.12]:42229 "EHLO saraswathi.solana.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934756AbXHNVkx (ORCPT ); Tue, 14 Aug 2007 17:40:53 -0400 Date: Tue, 14 Aug 2007 17:40:26 -0400 From: Jeff Dike To: Andrew Morton Cc: LKML , uml-devel Subject: [PATCH 13/14] UML - Remove os_* usage from userspace files Message-ID: <20070814214026.GA17554@c2.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 25719 Lines: 799 This patch fixes some userspace files which were calling libc through the os_* wrappers. It turns out that there was only one user of os_new_tty_pgrp, so it can be deleted. There are also some style and whitespace fixes in here. Signed-off-by: Jeff Dike -- arch/um/drivers/chan_user.c | 37 ++++---- arch/um/drivers/harddog_user.c | 54 +++++------ arch/um/include/mconsole.h | 13 -- arch/um/include/os.h | 1 arch/um/include/sysdep-i386/ptrace.h | 3 arch/um/include/sysdep-x86_64/ptrace.h | 152 ++++++++++++++++----------------- arch/um/kernel/skas/uaccess.c | 134 +++++++++++++---------------- arch/um/os-Linux/file.c | 11 -- 8 files changed, 186 insertions(+), 219 deletions(-) Index: linux-2.6.22/arch/um/drivers/chan_user.c =================================================================== --- linux-2.6.22.orig/arch/um/drivers/chan_user.c 2007-08-13 13:44:23.000000000 -0400 +++ linux-2.6.22/arch/um/drivers/chan_user.c 2007-08-13 13:45:03.000000000 -0400 @@ -134,12 +134,12 @@ static int winch_thread(void *arg) struct winch_data *data = arg; sigset_t sigs; int pty_fd, pipe_fd; - int count, err; + int count; char c = 1; pty_fd = data->pty_fd; pipe_fd = data->pipe_fd; - count = os_write_file(pipe_fd, &c, sizeof(c)); + count = write(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) printk(UM_KERN_ERR "winch_thread : failed to write " "synchronization byte, err = %d\n", -count); @@ -167,10 +167,15 @@ static int winch_thread(void *arg) exit(1); } - err = os_new_tty_pgrp(pty_fd, os_getpid()); - if (err < 0) { - printk(UM_KERN_ERR "winch_thread : new_tty_pgrp failed on " - "fd %d err = %d\n", pty_fd, -err); + if(ioctl(pty_fd, TIOCSCTTY, 0) < 0){ + printk(UM_KERN_ERR "winch_thread : TIOCSCTTY failed on " + "fd %d err = %d\n", pty_fd, errno); + exit(1); + } + + if(tcsetpgrp(pty_fd, os_getpid()) < 0){ + printk(UM_KERN_ERR "winch_thread : tcsetpgrp failed on " + "fd %d err = %d\n", pty_fd, errno); exit(1); } @@ -180,10 +185,10 @@ static int winch_thread(void *arg) * kernel semaphores. We don't use SysV semaphores because they are * persistent. */ - count = os_read_file(pipe_fd, &c, sizeof(c)); + count = read(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) printk(UM_KERN_ERR "winch_thread : failed to read " - "synchronization byte, err = %d\n", -count); + "synchronization byte, err = %d\n", errno); while(1) { /* @@ -192,10 +197,10 @@ static int winch_thread(void *arg) */ sigsuspend(&sigs); - count = os_write_file(pipe_fd, &c, sizeof(c)); + count = write(pipe_fd, &c, sizeof(c)); if (count != sizeof(c)) printk(UM_KERN_ERR "winch_thread : write failed, " - "err = %d\n", -count); + "err = %d\n", errno); } } @@ -229,11 +234,11 @@ static int winch_tramp(int fd, struct tt } *fd_out = fds[0]; - n = os_read_file(fds[0], &c, sizeof(c)); + n = read(fds[0], &c, sizeof(c)); if (n != sizeof(c)) { printk(UM_KERN_ERR "winch_tramp : failed to read " "synchronization byte\n"); - printk(UM_KERN_ERR "read failed, err = %d\n", -n); + printk(UM_KERN_ERR "read failed, err = %d\n", errno); printk(UM_KERN_ERR "fd %d will not support SIGWINCH\n", fd); err = -EINVAL; goto out_close; @@ -248,8 +253,8 @@ static int winch_tramp(int fd, struct tt return err; out_close: - os_close_file(fds[1]); - os_close_file(fds[0]); + close(fds[1]); + close(fds[0]); out: return err; } @@ -271,9 +276,9 @@ void register_winch(int fd, struct tty_s register_winch_irq(thread_fd, fd, thread, tty, stack); - count = os_write_file(thread_fd, &c, sizeof(c)); + count = write(thread_fd, &c, sizeof(c)); if (count != sizeof(c)) printk(UM_KERN_ERR "register_winch : failed to write " - "synchronization byte, err = %d\n", -count); + "synchronization byte, err = %d\n", errno); } } Index: linux-2.6.22/arch/um/include/os.h =================================================================== --- linux-2.6.22.orig/arch/um/include/os.h 2007-08-13 13:44:53.000000000 -0400 +++ linux-2.6.22/arch/um/include/os.h 2007-08-13 13:45:03.000000000 -0400 @@ -132,7 +132,6 @@ extern void os_print_error(int error, co extern int os_get_exec_close(int fd, int *close_on_exec); extern int os_set_exec_close(int fd, int close_on_exec); extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); -extern int os_new_tty_pgrp(int fd, int pid); extern int os_get_ifname(int fd, char *namebuf); extern int os_set_slip(int fd); extern int os_set_owner(int fd, int pid); Index: linux-2.6.22/arch/um/os-Linux/file.c =================================================================== --- linux-2.6.22.orig/arch/um/os-Linux/file.c 2007-08-13 13:44:23.000000000 -0400 +++ linux-2.6.22/arch/um/os-Linux/file.c 2007-08-13 13:45:03.000000000 -0400 @@ -101,17 +101,6 @@ int os_ioctl_generic(int fd, unsigned in return err; } -int os_new_tty_pgrp(int fd, int pid) -{ - if(ioctl(fd, TIOCSCTTY, 0) < 0) - return -errno; - - if(tcsetpgrp(fd, pid) < 0) - return -errno; - - return 0; -} - /* FIXME: ensure namebuf in os_get_if_name is big enough */ int os_get_ifname(int fd, char* namebuf) { Index: linux-2.6.22/arch/um/drivers/harddog_user.c =================================================================== --- linux-2.6.22.orig/arch/um/drivers/harddog_user.c 2007-08-13 13:44:23.000000000 -0400 +++ linux-2.6.22/arch/um/drivers/harddog_user.c 2007-08-13 13:45:03.000000000 -0400 @@ -1,14 +1,13 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ #include #include #include -#include "user.h" -#include "mconsole.h" #include "os.h" +#include "user.h" struct dog_data { int stdin; @@ -23,10 +22,10 @@ static void pre_exec(void *d) dup2(data->stdin, 0); dup2(data->stdout, 1); dup2(data->stdout, 2); - os_close_file(data->stdin); - os_close_file(data->stdout); - os_close_file(data->close_me[0]); - os_close_file(data->close_me[1]); + 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) @@ -40,13 +39,13 @@ int start_watchdog(int *in_fd_ret, int * char **args = NULL; err = os_pipe(in_fds, 1, 0); - if(err < 0){ + if (err < 0) { printk("harddog_open - os_pipe failed, err = %d\n", -err); goto out; } err = os_pipe(out_fds, 1, 0); - if(err < 0){ + if (err < 0) { printk("harddog_open - os_pipe failed, err = %d\n", -err); goto out_close_in; } @@ -56,7 +55,7 @@ int start_watchdog(int *in_fd_ret, int * data.close_me[0] = out_fds[1]; data.close_me[1] = in_fds[0]; - if(sock != NULL){ + if (sock != NULL) { mconsole_args[2] = sock; args = mconsole_args; } @@ -68,25 +67,25 @@ int start_watchdog(int *in_fd_ret, int * pid = run_helper(pre_exec, &data, args); - os_close_file(out_fds[0]); - os_close_file(in_fds[1]); + close(out_fds[0]); + close(in_fds[1]); - if(pid < 0){ + if (pid < 0) { err = -pid; printk("harddog_open - run_helper failed, errno = %d\n", -err); goto out_close_out; } - n = os_read_file(in_fds[0], &c, sizeof(c)); - if(n == 0){ + 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_close_out; } - else if(n < 0){ + else if (n < 0) { printk("harddog_open - read of watchdog pipe failed, " - "err = %d\n", -n); + "err = %d\n", errno); helper_wait(pid); err = n; goto out_close_out; @@ -96,19 +95,19 @@ int start_watchdog(int *in_fd_ret, int * return 0; out_close_in: - os_close_file(in_fds[0]); - os_close_file(in_fds[1]); + close(in_fds[0]); + close(in_fds[1]); out_close_out: - os_close_file(out_fds[0]); - os_close_file(out_fds[1]); + close(out_fds[0]); + close(out_fds[1]); out: return err; } void stop_watchdog(int in_fd, int out_fd) { - os_close_file(in_fd); - os_close_file(out_fd); + close(in_fd); + close(out_fd); } int ping_watchdog(int fd) @@ -116,10 +115,11 @@ int ping_watchdog(int fd) int n; char c = '\n'; - n = os_write_file(fd, &c, sizeof(c)); - if(n != sizeof(c)){ - printk("ping_watchdog - write failed, err = %d\n", -n); - if(n < 0) + n = write(fd, &c, sizeof(c)); + if (n != sizeof(c)) { + printk("ping_watchdog - write failed, ret = %d, err = %d\n", + n, errno); + if (n < 0) return n; return -EIO; } Index: linux-2.6.22/arch/um/include/mconsole.h =================================================================== --- linux-2.6.22.orig/arch/um/include/mconsole.h 2007-08-13 13:44:23.000000000 -0400 +++ linux-2.6.22/arch/um/include/mconsole.h 2007-08-13 13:45:03.000000000 -0400 @@ -1,6 +1,6 @@ /* * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) - * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ @@ -96,14 +96,3 @@ extern void lock_notify(void); extern void unlock_notify(void); #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-2.6.22/arch/um/include/sysdep-i386/ptrace.h =================================================================== --- linux-2.6.22.orig/arch/um/include/sysdep-i386/ptrace.h 2007-08-13 13:45:02.000000000 -0400 +++ linux-2.6.22/arch/um/include/sysdep-i386/ptrace.h 2007-08-13 13:45:03.000000000 -0400 @@ -1,4 +1,4 @@ -/* +/* * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ @@ -130,7 +130,6 @@ struct syscall_args { } \ val; \ }) - #define UPT_SET(regs, reg, val) \ do { \ Index: linux-2.6.22/arch/um/include/sysdep-x86_64/ptrace.h =================================================================== --- linux-2.6.22.orig/arch/um/include/sysdep-x86_64/ptrace.h 2007-08-13 13:45:02.000000000 -0400 +++ linux-2.6.22/arch/um/include/sysdep-x86_64/ptrace.h 2007-08-13 13:45:03.000000000 -0400 @@ -143,87 +143,87 @@ struct syscall_args { }; #define SYSCALL_ARGS(r) ((struct syscall_args) \ - { .args = { UPT_SYSCALL_ARG1(r), \ - UPT_SYSCALL_ARG2(r), \ - UPT_SYSCALL_ARG3(r), \ - UPT_SYSCALL_ARG4(r), \ - UPT_SYSCALL_ARG5(r), \ - UPT_SYSCALL_ARG6(r) } } ) + { .args = { UPT_SYSCALL_ARG1(r), \ + UPT_SYSCALL_ARG2(r), \ + UPT_SYSCALL_ARG3(r), \ + UPT_SYSCALL_ARG4(r), \ + UPT_SYSCALL_ARG5(r), \ + UPT_SYSCALL_ARG6(r) } } ) #define UPT_REG(regs, reg) \ - ({ unsigned long val; \ - switch(reg){ \ - case R8: val = UPT_R8(regs); break; \ - case R9: val = UPT_R9(regs); break; \ - case R10: val = UPT_R10(regs); break; \ - case R11: val = UPT_R11(regs); break; \ - case R12: val = UPT_R12(regs); break; \ - case R13: val = UPT_R13(regs); break; \ - case R14: val = UPT_R14(regs); break; \ - case R15: val = UPT_R15(regs); break; \ - case RIP: val = UPT_IP(regs); break; \ - case RSP: val = UPT_SP(regs); break; \ - case RAX: val = UPT_RAX(regs); break; \ - case RBX: val = UPT_RBX(regs); break; \ - case RCX: val = UPT_RCX(regs); break; \ - case RDX: val = UPT_RDX(regs); break; \ - case RSI: val = UPT_RSI(regs); break; \ - case RDI: val = UPT_RDI(regs); break; \ - case RBP: val = UPT_RBP(regs); break; \ - case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \ - case CS: val = UPT_CS(regs); break; \ - case SS: val = UPT_SS(regs); break; \ - case FS_BASE: val = UPT_FS_BASE(regs); break; \ - case GS_BASE: val = UPT_GS_BASE(regs); break; \ - case DS: val = UPT_DS(regs); break; \ - case ES: val = UPT_ES(regs); break; \ - case FS : val = UPT_FS (regs); break; \ - case GS: val = UPT_GS(regs); break; \ - case EFLAGS: val = UPT_EFLAGS(regs); break; \ - default : \ - panic("Bad register in UPT_REG : %d\n", reg); \ - val = -1; \ - } \ - val; \ - }) + ({ unsigned long val; \ + switch(reg){ \ + case R8: val = UPT_R8(regs); break; \ + case R9: val = UPT_R9(regs); break; \ + case R10: val = UPT_R10(regs); break; \ + case R11: val = UPT_R11(regs); break; \ + case R12: val = UPT_R12(regs); break; \ + case R13: val = UPT_R13(regs); break; \ + case R14: val = UPT_R14(regs); break; \ + case R15: val = UPT_R15(regs); break; \ + case RIP: val = UPT_IP(regs); break; \ + case RSP: val = UPT_SP(regs); break; \ + case RAX: val = UPT_RAX(regs); break; \ + case RBX: val = UPT_RBX(regs); break; \ + case RCX: val = UPT_RCX(regs); break; \ + case RDX: val = UPT_RDX(regs); break; \ + case RSI: val = UPT_RSI(regs); break; \ + case RDI: val = UPT_RDI(regs); break; \ + case RBP: val = UPT_RBP(regs); break; \ + case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \ + case CS: val = UPT_CS(regs); break; \ + case SS: val = UPT_SS(regs); break; \ + case FS_BASE: val = UPT_FS_BASE(regs); break; \ + case GS_BASE: val = UPT_GS_BASE(regs); break; \ + case DS: val = UPT_DS(regs); break; \ + case ES: val = UPT_ES(regs); break; \ + case FS : val = UPT_FS (regs); break; \ + case GS: val = UPT_GS(regs); break; \ + case EFLAGS: val = UPT_EFLAGS(regs); break; \ + default : \ + panic("Bad register in UPT_REG : %d\n", reg); \ + val = -1; \ + } \ + val; \ + }) #define UPT_SET(regs, reg, val) \ - ({ unsigned long __upt_val = val; \ - switch(reg){ \ - case R8: UPT_R8(regs) = __upt_val; break; \ - case R9: UPT_R9(regs) = __upt_val; break; \ - case R10: UPT_R10(regs) = __upt_val; break; \ - case R11: UPT_R11(regs) = __upt_val; break; \ - case R12: UPT_R12(regs) = __upt_val; break; \ - case R13: UPT_R13(regs) = __upt_val; break; \ - case R14: UPT_R14(regs) = __upt_val; break; \ - case R15: UPT_R15(regs) = __upt_val; break; \ - case RIP: UPT_IP(regs) = __upt_val; break; \ - case RSP: UPT_SP(regs) = __upt_val; break; \ - case RAX: UPT_RAX(regs) = __upt_val; break; \ - case RBX: UPT_RBX(regs) = __upt_val; break; \ - case RCX: UPT_RCX(regs) = __upt_val; break; \ - case RDX: UPT_RDX(regs) = __upt_val; break; \ - case RSI: UPT_RSI(regs) = __upt_val; break; \ - case RDI: UPT_RDI(regs) = __upt_val; break; \ - case RBP: UPT_RBP(regs) = __upt_val; break; \ - case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ - case CS: UPT_CS(regs) = __upt_val; break; \ - case SS: UPT_SS(regs) = __upt_val; break; \ - case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \ - case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \ - case DS: UPT_DS(regs) = __upt_val; break; \ - case ES: UPT_ES(regs) = __upt_val; break; \ - case FS: UPT_FS(regs) = __upt_val; break; \ - case GS: UPT_GS(regs) = __upt_val; break; \ - case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ - default : \ - panic("Bad register in UPT_SET : %d\n", reg); \ - break; \ - } \ - __upt_val; \ - }) + ({ unsigned long __upt_val = val; \ + switch(reg){ \ + case R8: UPT_R8(regs) = __upt_val; break; \ + case R9: UPT_R9(regs) = __upt_val; break; \ + case R10: UPT_R10(regs) = __upt_val; break; \ + case R11: UPT_R11(regs) = __upt_val; break; \ + case R12: UPT_R12(regs) = __upt_val; break; \ + case R13: UPT_R13(regs) = __upt_val; break; \ + case R14: UPT_R14(regs) = __upt_val; break; \ + case R15: UPT_R15(regs) = __upt_val; break; \ + case RIP: UPT_IP(regs) = __upt_val; break; \ + case RSP: UPT_SP(regs) = __upt_val; break; \ + case RAX: UPT_RAX(regs) = __upt_val; break; \ + case RBX: UPT_RBX(regs) = __upt_val; break; \ + case RCX: UPT_RCX(regs) = __upt_val; break; \ + case RDX: UPT_RDX(regs) = __upt_val; break; \ + case RSI: UPT_RSI(regs) = __upt_val; break; \ + case RDI: UPT_RDI(regs) = __upt_val; break; \ + case RBP: UPT_RBP(regs) = __upt_val; break; \ + case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ + case CS: UPT_CS(regs) = __upt_val; break; \ + case SS: UPT_SS(regs) = __upt_val; break; \ + case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \ + case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \ + case DS: UPT_DS(regs) = __upt_val; break; \ + case ES: UPT_ES(regs) = __upt_val; break; \ + case FS: UPT_FS(regs) = __upt_val; break; \ + case GS: UPT_GS(regs) = __upt_val; break; \ + case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ + default : \ + panic("Bad register in UPT_SET : %d\n", reg); \ + break; \ + } \ + __upt_val; \ + }) #define UPT_SET_SYSCALL_RETURN(r, res) \ REGS_SET_SYSCALL_RETURN((r)->regs, (res)) Index: linux-2.6.22/arch/um/kernel/skas/uaccess.c =================================================================== --- linux-2.6.22.orig/arch/um/kernel/skas/uaccess.c 2007-08-13 13:44:23.000000000 -0400 +++ linux-2.6.22/arch/um/kernel/skas/uaccess.c 2007-08-13 13:45:03.000000000 -0400 @@ -1,18 +1,14 @@ /* - * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ -#include "linux/compiler.h" -#include "linux/stddef.h" -#include "linux/kernel.h" -#include "linux/string.h" -#include "linux/fs.h" -#include "linux/hardirq.h" +#include "linux/err.h" #include "linux/highmem.h" +#include "linux/mm.h" +#include "asm/current.h" #include "asm/page.h" #include "asm/pgtable.h" -#include "asm/uaccess.h" #include "kern_util.h" #include "os.h" @@ -27,16 +23,16 @@ static unsigned long maybe_map(unsigned void *phys = um_virt_to_phys(current, virt, &pte); int dummy_code; - if(IS_ERR(phys) || (is_write && !pte_write(pte))){ + if (IS_ERR(phys) || (is_write && !pte_write(pte))) { err = handle_page_fault(virt, 0, is_write, 1, &dummy_code); - if(err) - return(-1UL); + if (err) + return -1UL; phys = um_virt_to_phys(current, virt, NULL); } - if(IS_ERR(phys)) - phys = (void *) -1; + if (IS_ERR(phys)) + phys = (void *) -1; - return((unsigned long) phys); + return (unsigned long) phys; } static int do_op_one_page(unsigned long addr, int len, int is_write, @@ -46,17 +42,18 @@ static int do_op_one_page(unsigned long int n; addr = maybe_map(addr, is_write); - if(addr == -1UL) - return(-1); + if (addr == -1UL) + return -1; page = phys_to_page(addr); - addr = (unsigned long) kmap_atomic(page, KM_UML_USERCOPY) + (addr & ~PAGE_MASK); + addr = (unsigned long) kmap_atomic(page, KM_UML_USERCOPY) + + (addr & ~PAGE_MASK); n = (*op)(addr, len, arg); kunmap_atomic(page, KM_UML_USERCOPY); - return(n); + return n; } static void do_buffer_op(void *jmpbuf, void *arg_ptr) @@ -81,21 +78,21 @@ static void do_buffer_op(void *jmpbuf, v current->thread.fault_catcher = jmpbuf; n = do_op_one_page(addr, size, is_write, op, arg); - if(n != 0){ + if (n != 0) { *res = (n < 0 ? remain : 0); goto out; } addr += size; remain -= size; - if(remain == 0){ + if (remain == 0) { *res = 0; goto out; } - while(addr < ((addr + remain) & PAGE_MASK)){ + while(addr < ((addr + remain) & PAGE_MASK)) { n = do_op_one_page(addr, PAGE_SIZE, is_write, op, arg); - if(n != 0){ + if (n != 0) { *res = (n < 0 ? remain : 0); goto out; } @@ -103,13 +100,13 @@ static void do_buffer_op(void *jmpbuf, v addr += PAGE_SIZE; remain -= PAGE_SIZE; } - if(remain == 0){ + if (remain == 0) { *res = 0; goto out; } n = do_op_one_page(addr, remain, is_write, op, arg); - if(n != 0) + if (n != 0) *res = (n < 0 ? remain : 0); else *res = 0; out: @@ -124,10 +121,10 @@ static int buffer_op(unsigned long addr, faulted = setjmp_wrapper(do_buffer_op, addr, len, is_write, op, arg, &res); - if(!faulted) - return(res); + if (!faulted) + return res; - return(addr + len - (unsigned long) current->thread.fault_addr); + return addr + len - (unsigned long) current->thread.fault_addr; } static int copy_chunk_from_user(unsigned long from, int len, void *arg) @@ -136,19 +133,19 @@ static int copy_chunk_from_user(unsigned memcpy((void *) to, (void *) from, len); *to_ptr += len; - return(0); + return 0; } int copy_from_user(void *to, const void __user *from, int n) { - if(segment_eq(get_fs(), KERNEL_DS)){ + if (segment_eq(get_fs(), KERNEL_DS)) { memcpy(to, (__force void*)from, n); - return(0); + return 0; } - return(access_ok(VERIFY_READ, from, n) ? + return access_ok(VERIFY_READ, from, n) ? buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to): - n); + n; } static int copy_chunk_to_user(unsigned long to, int len, void *arg) @@ -157,19 +154,19 @@ static int copy_chunk_to_user(unsigned l memcpy((void *) to, (void *) from, len); *from_ptr += len; - return(0); + return 0; } int copy_to_user(void __user *to, const void *from, int n) { - if(segment_eq(get_fs(), KERNEL_DS)){ - memcpy((__force void*)to, from, n); - return(0); + if (segment_eq(get_fs(), KERNEL_DS)) { + memcpy((__force void *) to, from, n); + return 0; } - return(access_ok(VERIFY_WRITE, to, n) ? + return access_ok(VERIFY_WRITE, to, n) ? buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) : - n); + n; } static int strncpy_chunk_from_user(unsigned long from, int len, void *arg) @@ -181,9 +178,9 @@ static int strncpy_chunk_from_user(unsig n = strnlen(to, len); *to_ptr += n; - if(n < len) - return(1); - return(0); + if (n < len) + return 1; + return 0; } int strncpy_from_user(char *dst, const char __user *src, int count) @@ -191,41 +188,41 @@ int strncpy_from_user(char *dst, const c int n; char *ptr = dst; - if(segment_eq(get_fs(), KERNEL_DS)){ - strncpy(dst, (__force void*)src, count); - return(strnlen(dst, count)); + if (segment_eq(get_fs(), KERNEL_DS)) { + strncpy(dst, (__force void *) src, count); + return strnlen(dst, count); } - if(!access_ok(VERIFY_READ, src, 1)) - return(-EFAULT); + if (!access_ok(VERIFY_READ, src, 1)) + return -EFAULT; n = buffer_op((unsigned long) src, count, 0, strncpy_chunk_from_user, &ptr); - if(n != 0) - return(-EFAULT); - return(strnlen(dst, count)); + if (n != 0) + return -EFAULT; + return strnlen(dst, count); } static int clear_chunk(unsigned long addr, int len, void *unused) { memset((void *) addr, 0, len); - return(0); + return 0; } int __clear_user(void __user *mem, int len) { - return(buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL)); + return buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL); } int clear_user(void __user *mem, int len) { - if(segment_eq(get_fs(), KERNEL_DS)){ + if (segment_eq(get_fs(), KERNEL_DS)) { memset((__force void*)mem, 0, len); - return(0); + return 0; } - return(access_ok(VERIFY_WRITE, mem, len) ? - buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len); + return access_ok(VERIFY_WRITE, mem, len) ? + buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len; } static int strnlen_chunk(unsigned long str, int len, void *arg) @@ -235,31 +232,20 @@ static int strnlen_chunk(unsigned long s n = strnlen((void *) str, len); *len_ptr += n; - if(n < len) - return(1); - return(0); + if (n < len) + return 1; + return 0; } int strnlen_user(const void __user *str, int len) { int count = 0, n; - if(segment_eq(get_fs(), KERNEL_DS)) - return(strnlen((__force char*)str, len) + 1); + if (segment_eq(get_fs(), KERNEL_DS)) + return strnlen((__force char*)str, len) + 1; n = buffer_op((unsigned long) str, len, 0, strnlen_chunk, &count); - if(n == 0) - return(count + 1); - return(-EFAULT); + if (n == 0) + return count + 1; + return -EFAULT; } - -/* - * 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: - */ - 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/