[PATCH] uml: move tty logging to os-Linux

The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all systemcalls from tty_log.c file under os-Linux dir

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 1 insertions, 236 deletions

diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index ac5afaa..fe08971 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -15,15 +15,12 @@ obj-y = config.o exec_kern.o exitcode.o \
 obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
 obj-$(CONFIG_GPROF)	+= gprof_syms.o
 obj-$(CONFIG_GCOV)	+= gmon_syms.o
-obj-$(CONFIG_TTY_LOG)	+= tty_log.o
 obj-$(CONFIG_SYSCALL_DEBUG) += syscall.o
 
 obj-$(CONFIG_MODE_TT) += tt/
 obj-$(CONFIG_MODE_SKAS) += skas/
 
-user-objs-$(CONFIG_TTY_LOG) += tty_log.o
-
-USER_OBJS := $(user-objs-y) config.o tty_log.o
+USER_OBJS := config.o
 
 include arch/um/scripts/Makefile.rules
 
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
index c264e1c..1ca8431 100644
--- a/arch/um/kernel/exec_kern.c
+++ b/arch/um/kernel/exec_kern.c
@@ -30,8 +30,6 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
 	CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
 }
 
-extern void log_exec(char **argv, void *tty);
-
 static long execve1(char *file, char __user * __user *argv,
 		    char __user *__user *env)
 {
diff --git a/arch/um/kernel/tty_log.c b/arch/um/kernel/tty_log.c
deleted file mode 100644
index 9ada656..0000000
--- a/arch/um/kernel/tty_log.c
+++ /dev/null
@@ -1,230 +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 "kern_util.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 } );
-		os_write_file(tty_log_fd, &data, sizeof(data));
-		os_write_file(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 } );
-		os_write_file(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 = os_write_file(fd, chunk, try);
-		if(n != try) {
-			if(n < 0)
-				return(n);
-			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 } );
-		os_write_file(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 } );
-	os_write_file(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"
-);
-
-
-/*
- * 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:
- */