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Message-ID: <20070814214026.GA17554@c2.user-mode-linux.org>
Date: Tue, 14 Aug 2007 17:40:26 -0400
From: Jeff Dike <jdike@...toit.com>
To: Andrew Morton <akpm@...l.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
uml-devel <user-mode-linux-devel@...ts.sourceforge.net>
Subject: [PATCH 13/14] UML - Remove os_* usage from userspace files
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 <jdike@...ux.intel.com>
--
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@...aya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@...dtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
-#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@....org)
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@...aya.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@...dtoit,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@...dtoit,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@...toit.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@...dtoit,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:
- */
-
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