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uml: remove the dead TTY_LOG code

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Remove the dead CONFIG_TTY_LOG (no kconfig option).

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Adrian Bunk 2008-10-15 22:01:22 -07:00 committed by Linus Torvalds
parent b25f29b0da
commit d2efa6d5ce
3 changed files with 0 additions and 232 deletions
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12
arch/um/kernel/exec.c
View file

@ -42,23 +42,11 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
PT_REGS_SP(regs) = esp;
}
#ifdef CONFIG_TTY_LOG
extern void log_exec(char **argv, void *tty);
#endif
static long execve1(char *file, char __user * __user *argv,
char __user *__user *env)
{
long error;
#ifdef CONFIG_TTY_LOG
struct tty_struct *tty;
mutex_lock(&tty_mutex);
tty = get_current_tty();
if (tty)
log_exec(argv, tty);
mutex_unlock(&tty_mutex);
#endif
error = do_execve(file, argv, env, &current->thread.regs);
if (error == 0) {
task_lock(current);

3
arch/um/os-Linux/Makefile
View file

@ -7,9 +7,6 @@ obj-y = aio.o elf_aux.o execvp.o file.o helper.o irq.o main.o mem.o process.o \
registers.o sigio.o signal.o start_up.o time.o tty.o uaccess.o \
umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/
obj-$(CONFIG_TTY_LOG) += tty_log.o
user-objs-$(CONFIG_TTY_LOG) += tty_log.o
USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \
main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \
tty.o tls.o uaccess.o umid.o util.o

217
arch/um/os-Linux/tty_log.c
View file

@ -1,217 +0,0 @@
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com) and
* geoffrey hing <ghing@net.ohio-state.edu>
* Licensed under the GPL
*/
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include "init.h"
#include "user.h"
#include "os.h"
#define TTY_LOG_DIR "./"
/* Set early in boot and then unchanged */
static char *tty_log_dir = TTY_LOG_DIR;
static int tty_log_fd = -1;
#define TTY_LOG_OPEN 1
#define TTY_LOG_CLOSE 2
#define TTY_LOG_WRITE 3
#define TTY_LOG_EXEC 4
#define TTY_READ 1
#define TTY_WRITE 2
struct tty_log_buf {
int what;
unsigned long tty;
int len;
int direction;
unsigned long sec;
unsigned long usec;
};
int open_tty_log(void *tty, void *current_tty)
{
struct timeval tv;
struct tty_log_buf data;
char buf[strlen(tty_log_dir) + sizeof("01234567890-01234567\0")];
int fd;
gettimeofday(&tv, NULL);
if(tty_log_fd != -1){
data = ((struct tty_log_buf) { .what = TTY_LOG_OPEN,
.tty = (unsigned long) tty,
.len = sizeof(current_tty),
.direction = 0,
.sec = tv.tv_sec,
.usec = tv.tv_usec } );
write(tty_log_fd, &data, sizeof(data));
write(tty_log_fd, &current_tty, data.len);
return tty_log_fd;
}
sprintf(buf, "%s/%0u-%0u", tty_log_dir, (unsigned int) tv.tv_sec,
(unsigned int) tv.tv_usec);
fd = os_open_file(buf, of_append(of_create(of_rdwr(OPENFLAGS()))),
0644);
if(fd < 0){
printk("open_tty_log : couldn't open '%s', errno = %d\n",
buf, -fd);
}
return fd;
}
void close_tty_log(int fd, void *tty)
{
struct tty_log_buf data;
struct timeval tv;
if(tty_log_fd != -1){
gettimeofday(&tv, NULL);
data = ((struct tty_log_buf) { .what = TTY_LOG_CLOSE,
.tty = (unsigned long) tty,
.len = 0,
.direction = 0,
.sec = tv.tv_sec,
.usec = tv.tv_usec } );
write(tty_log_fd, &data, sizeof(data));
return;
}
os_close_file(fd);
}
static int log_chunk(int fd, const char *buf, int len)
{
int total = 0, try, missed, n;
char chunk[64];
while(len > 0){
try = (len > sizeof(chunk)) ? sizeof(chunk) : len;
missed = copy_from_user_proc(chunk, (char *) buf, try);
try -= missed;
n = write(fd, chunk, try);
if(n != try) {
if(n < 0)
return -errno;
return -EIO;
}
if(missed != 0)
return -EFAULT;
len -= try;
total += try;
buf += try;
}
return total;
}
int write_tty_log(int fd, const char *buf, int len, void *tty, int is_read)
{
struct timeval tv;
struct tty_log_buf data;
int direction;
if(fd == tty_log_fd){
gettimeofday(&tv, NULL);
direction = is_read ? TTY_READ : TTY_WRITE;
data = ((struct tty_log_buf) { .what = TTY_LOG_WRITE,
.tty = (unsigned long) tty,
.len = len,
.direction = direction,
.sec = tv.tv_sec,
.usec = tv.tv_usec } );
write(tty_log_fd, &data, sizeof(data));
}
return log_chunk(fd, buf, len);
}
void log_exec(char **argv, void *tty)
{
struct timeval tv;
struct tty_log_buf data;
char **ptr,*arg;
int len;
if(tty_log_fd == -1) return;
gettimeofday(&tv, NULL);
len = 0;
for(ptr = argv; ; ptr++){
if(copy_from_user_proc(&arg, ptr, sizeof(arg)))
return;
if(arg == NULL) break;
len += strlen_user_proc(arg);
}
data = ((struct tty_log_buf) { .what = TTY_LOG_EXEC,
.tty = (unsigned long) tty,
.len = len,
.direction = 0,
.sec = tv.tv_sec,
.usec = tv.tv_usec } );
write(tty_log_fd, &data, sizeof(data));
for(ptr = argv; ; ptr++){
if(copy_from_user_proc(&arg, ptr, sizeof(arg)))
return;
if(arg == NULL) break;
log_chunk(tty_log_fd, arg, strlen_user_proc(arg));
}
}
extern void register_tty_logger(int (*opener)(void *, void *),
int (*writer)(int, const char *, int,
void *, int),
void (*closer)(int, void *));
static int register_logger(void)
{
register_tty_logger(open_tty_log, write_tty_log, close_tty_log);
return 0;
}
__uml_initcall(register_logger);
static int __init set_tty_log_dir(char *name, int *add)
{
tty_log_dir = name;
return 0;
}
__uml_setup("tty_log_dir=", set_tty_log_dir,
"tty_log_dir=<directory>\n"
" This is used to specify the directory where the logs of all pty\n"
" data from this UML machine will be written.\n\n"
);
static int __init set_tty_log_fd(char *name, int *add)
{
char *end;
tty_log_fd = strtoul(name, &end, 0);
if((*end != '\0') || (end == name)){
printf("set_tty_log_fd - strtoul failed on '%s'\n", name);
tty_log_fd = -1;
}
*add = 0;
return 0;
}
__uml_setup("tty_log_fd=", set_tty_log_fd,
"tty_log_fd=<fd>\n"
" This is used to specify a preconfigured file descriptor to which all\n"
" tty data will be written. Preconfigure the descriptor with something\n"
" like '10>tty_log tty_log_fd=10'.\n\n"
);