diff options
Diffstat (limited to 'arch/um/os-Linux/tty_log.c')
| -rw-r--r-- | arch/um/os-Linux/tty_log.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/arch/um/os-Linux/tty_log.c b/arch/um/os-Linux/tty_log.c deleted file mode 100644 index cc648e6fd3a2..000000000000 --- a/arch/um/os-Linux/tty_log.c +++ /dev/null @@ -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, ¤t_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" -); |