- Rename getpty() to xgetpty() and adjust callers.

- Rewrite kbd_mode and setconsole
- Introduce and use console_make_active() and xopen_xwrite_close()
- honour buffer-reservation method as set by the user (dumpkmap, loadkmap)
- shrink rtcwake and some console-tools

  Saves about 270 Bytes
This commit is contained in:
Bernhard Reutner-Fischer
2008-05-19 08:18:50 +00:00
parent ee56e013cf
commit ae4342ca3e
18 changed files with 136 additions and 142 deletions

View File

@ -9,25 +9,17 @@
#include "libbb.h"
/* From <linux/vt.h> */
enum {
VT_ACTIVATE = 0x5606, /* make vt active */
VT_WAITACTIVE = 0x5607 /* wait for vt active */
};
int chvt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int chvt_main(int argc, char **argv)
{
int fd, num;
int num;
if (argc != 2) {
bb_show_usage();
}
fd = get_console_fd();
num = xatou_range(argv[1], 1, 63);
/* double cast suppresses "cast to ptr from int of different size" */
xioctl(fd, VT_ACTIVATE, (void *)(ptrdiff_t)num);
xioctl(fd, VT_WAITACTIVE, (void *)(ptrdiff_t)num);
console_make_active(get_console_fd(), num);
return EXIT_SUCCESS;
}

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@ -7,6 +7,7 @@
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
*/
/* no options, no getopt */
#include "libbb.h"
@ -23,18 +24,17 @@ struct kbentry {
#define MAX_NR_KEYMAPS 256
int dumpkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dumpkmap_main(int argc, char **argv)
int dumpkmap_main(int ATTRIBUTE_UNUSED argc, char ATTRIBUTE_UNUSED **argv)
{
struct kbentry ke;
int i, j, fd;
char flags[MAX_NR_KEYMAPS];
RESERVE_CONFIG_BUFFER(flags,MAX_NR_KEYMAPS);
if (argc >= 2 && argv[1][0] == '-')
bb_show_usage();
/* bb_warn_ignoring_args(argc>=2);*/
fd = xopen(CURRENT_VC, O_RDWR);
write(1, "bkeymap", 7);
write(STDOUT_FILENO, "bkeymap", 7);
/* Here we want to set everything to 0 except for indexes:
* [0-2] [4-6] [8-10] [12] */
@ -43,7 +43,7 @@ int dumpkmap_main(int argc, char **argv)
flags[3] = flags[7] = flags[11] = 0;
/* dump flags */
write(1, flags, MAX_NR_KEYMAPS);
write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS);
for (i = 0; i < MAX_NR_KEYMAPS; i++) {
if (flags[i] == 1) {
@ -56,11 +56,14 @@ int dumpkmap_main(int argc, char **argv)
(char *)&ke.kb_table,
&ke.kb_value)
) {
write(1, (void*)&ke.kb_value, 2);
write(STDOUT_FILENO, (void*)&ke.kb_value, 2);
}
}
}
}
close(fd);
if (ENABLE_FEATURE_CLEAN_UP) {
close(fd);
RELEASE_CONFIG_BUFFER(flags);
}
return EXIT_SUCCESS;
}

View File

@ -1,6 +1,6 @@
/* vi: set sw=4 ts=4: */
/*
* Mini loadkmap implementation for busybox
* Mini kbd_mode implementation for busybox
*
* Copyright (C) 2007 Lo<4C>c Greni<6E> <loic.grenie@gmail.com>
* written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
@ -14,54 +14,39 @@
#include <linux/kd.h>
int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int kbd_mode_main(int argc, char **argv)
int kbd_mode_main(int ATTRIBUTE_UNUSED argc, char **argv)
{
static const char opts[] = "saku";
const char *opt = argv[1];
const char *p;
int fd;
unsigned opt;
enum {
SCANCODE = (1<<0),
ASCII = (1<<1),
MEDIUMRAW= (1<<2),
UNICODE = (1<<3)
};
static const char KD_xxx[] ALIGN1 = "saku";
opt = getopt32(argv, KD_xxx);
fd = get_console_fd();
if (fd < 0) /* get_console_fd() already complained */
/* if (fd < 0)
return EXIT_FAILURE;
*/
if (!opt) { /* print current setting */
const char *mode = "unknown";
int m;
if (opt == NULL) {
/* No arg */
const char *msg = "unknown";
int mode;
ioctl(fd, KDGKBMODE, &mode);
switch(mode) {
case K_RAW:
msg = "raw (scancode)";
break;
case K_XLATE:
msg = "default (ASCII)";
break;
case K_MEDIUMRAW:
msg = "mediumraw (keycode)";
break;
case K_UNICODE:
msg = "Unicode (UTF-8)";
break;
}
printf("The keyboard is in %s mode\n", msg);
}
else if (argc > 2 /* more than 1 arg */
|| *opt != '-' /* not an option */
|| (p = strchr(opts, opt[1])) == NULL /* not an option we expect */
|| opt[2] != '\0' /* more than one option char */
) {
bb_show_usage();
/* return EXIT_FAILURE; - not reached */
}
else {
#if K_RAW != 0 || K_XLATE != 1 || K_MEDIUMRAW != 2 || K_UNICODE != 3
#error kbd_mode must be changed
#endif
/* The options are in the order of the various K_xxx */
ioctl(fd, KDSKBMODE, p - opts);
ioctl(fd, KDGKBMODE, &m);
if (m == K_RAW)
mode = "raw (scancode)";
else if (m == K_XLATE)
mode = "default (ASCII)";
else if (m == K_MEDIUMRAW)
mode = "mediumraw (keycode)";
else if (m == K_UNICODE)
mode = "Unicode (UTF-8)";
printf("The keyboard is in %s mode\n", mode);
} else {
opt = opt & UNICODE ? 3 : opt >> 1;
xioctl(fd, KDSKBMODE, &opt);
}
if (ENABLE_FEATURE_CLEAN_UP)

View File

@ -26,28 +26,26 @@ struct kbentry {
#define MAX_NR_KEYMAPS 256
int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int loadkmap_main(int argc, char **argv ATTRIBUTE_UNUSED)
int loadkmap_main(int ATTRIBUTE_UNUSED argc, char **argv ATTRIBUTE_UNUSED)
{
struct kbentry ke;
int i, j, fd;
uint16_t ibuff[NR_KEYS];
char flags[MAX_NR_KEYMAPS];
char buff[7];
RESERVE_CONFIG_BUFFER(flags,MAX_NR_KEYMAPS);
if (argc != 1)
bb_show_usage();
/* bb_warn_ignoring_args(argc>=2);*/
fd = xopen(CURRENT_VC, O_RDWR);
xread(0, buff, 7);
if (strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
bb_error_msg_and_die("this is not a valid binary keymap");
xread(STDIN_FILENO, flags, 7);
if (strncmp(flags, BINARY_KEYMAP_MAGIC, 7))
bb_error_msg_and_die("not a valid binary keymap");
xread(0, flags, MAX_NR_KEYMAPS);
xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS);
for (i = 0; i < MAX_NR_KEYMAPS; i++) {
if (flags[i] == 1) {
xread(0, ibuff, NR_KEYS * sizeof(uint16_t));
xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t));
for (j = 0; j < NR_KEYS; j++) {
ke.kb_index = j;
ke.kb_table = i;
@ -57,6 +55,9 @@ int loadkmap_main(int argc, char **argv ATTRIBUTE_UNUSED)
}
}
if (ENABLE_FEATURE_CLEAN_UP) close(fd);
return 0;
if (ENABLE_FEATURE_CLEAN_UP) {
close(fd);
RELEASE_CONFIG_BUFFER(flags);
}
return EXIT_SUCCESS;
}

View File

@ -61,7 +61,8 @@ static int get_vt_fd(void)
for (fd = 0; fd < 3; fd++)
if (!not_vt_fd(fd))
return fd;
/* _only_ O_NONBLOCK: ask for neither read not write perms */
/* _only_ O_NONBLOCK: ask for neither read nor write perms */
/*FIXME: use? device_open(DEV_CONSOLE,0); */
fd = open(DEV_CONSOLE, O_NONBLOCK);
if (fd >= 0 && !not_vt_fd(fd))
return fd;
@ -93,7 +94,7 @@ static NOINLINE void vfork_child(char **argv)
/* CHILD */
/* Try to make this VT our controlling tty */
setsid(); /* lose old ctty */
ioctl(0, TIOCSCTTY, 0 /* 0: don't forcibly steal */);
ioctl(STDIN_FILENO, TIOCSCTTY, 0 /* 0: don't forcibly steal */);
//bb_error_msg("our sid %d", getsid(0));
//bb_error_msg("our pgrp %d", getpgrp());
//bb_error_msg("VT's sid %d", tcgetsid(0));
@ -135,14 +136,13 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
sprintf(vtname, VC_FORMAT, vtno);
/* (Try to) clean up stray open fds above fd 2 */
bb_daemonize_or_rexec(DAEMON_CLOSE_EXTRA_FDS | DAEMON_ONLY_SANITIZE, NULL);
close(0);
close(STDIN_FILENO);
/*setsid(); - BAD IDEA: after we exit, child is SIGHUPed... */
xopen(vtname, O_RDWR);
xioctl(0, VT_GETSTATE, &vtstat);
xioctl(STDIN_FILENO, VT_GETSTATE, &vtstat);
if (flags & OPT_s) {
xioctl(0, VT_ACTIVATE, (void*)(ptrdiff_t)vtno);
xioctl(0, VT_WAITACTIVE, (void*)(ptrdiff_t)vtno);
console_make_active(STDIN_FILENO, vtno);
}
if (!argv[0]) {
@ -153,14 +153,16 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
/*argv[1] = NULL; - already is */
}
xdup2(0, STDOUT_FILENO);
xdup2(0, STDERR_FILENO);
xdup2(STDIN_FILENO, STDOUT_FILENO);
xdup2(STDIN_FILENO, STDERR_FILENO);
#ifdef BLOAT
{
/* Handle -l (login shell) option */
const char *prog = argv[0];
if (flags & OPT_l)
argv[0] = xasprintf("-%s", argv[0]);
}
#endif
vfork_child(argv);
@ -168,12 +170,11 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
/* We have only one child, wait for it */
safe_waitpid(-1, NULL, 0); /* loops on EINTR */
if (flags & OPT_s) {
xioctl(0, VT_ACTIVATE, (void*)(ptrdiff_t)(vtstat.v_active));
xioctl(0, VT_WAITACTIVE, (void*)(ptrdiff_t)(vtstat.v_active));
console_make_active(STDIN_FILENO, vtstat.v_active);
// Compat: even with -c N (try to) disallocate:
// # /usr/app/kbd-1.12/bin/openvt -f -c 9 -ws sleep 5
// openvt: could not deallocate console 9
xioctl(0, VT_DISALLOCATE, (void*)(ptrdiff_t)vtno);
xioctl(STDIN_FILENO, VT_DISALLOCATE, (void*)(ptrdiff_t)vtno);
}
}
return EXIT_SUCCESS;

View File

@ -26,7 +26,7 @@ int reset_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
/* no options, no getopt */
if (isatty(0) && isatty(1)) {
if (isatty(STDIN_FILENO) && isatty(STDOUT_FILENO)) {
/* See 'man 4 console_codes' for details:
* "ESC c" -- Reset
* "ESC ( K" -- Select user mapping

View File

@ -3,40 +3,34 @@
* setconsole.c - redirect system console output
*
* Copyright (C) 2004,2005 Enrik Berkhan <Enrik.Berkhan@inka.de>
* Copyright (C) 2008 Bernhard Fischer
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
static const char setconsole_longopts[] ALIGN1 =
"reset\0" No_argument "r"
;
#endif
#define OPT_SETCONS_RESET 1
int setconsole_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setconsole_main(int argc, char **argv)
int setconsole_main(int ATTRIBUTE_UNUSED argc, char **argv)
{
unsigned long flags;
const char *device = CURRENT_TTY;
bool reset;
#if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
static const char setconsole_longopts[] ALIGN1 =
"reset\0" No_argument "r"
;
applet_long_options = setconsole_longopts;
#endif
flags = getopt32(argv, "r");
/* at most one non-option argument */
opt_complementary = "?1";
reset = getopt32(argv, "r");
if (argc - optind > 1)
bb_show_usage();
if (argc - optind == 1) {
if (flags & OPT_SETCONS_RESET)
bb_show_usage();
device = argv[optind];
argv += 1 + reset;
if (*argv) {
device = *argv;
} else {
if (flags & OPT_SETCONS_RESET)
if (reset)
device = DEV_CONSOLE;
}

View File

@ -17,15 +17,14 @@ int setlogcons_main(int argc ATTRIBUTE_UNUSED, char **argv)
struct {
char fn;
char subarg;
} arg;
arg.fn = 11; /* redirect kernel messages */
arg.subarg = 0; /* to specified console (current as default) */
} arg = { 11, /* redirect kernel messages */
0 /* to specified console (current as default) */
};
if (argv[1])
arg.subarg = xatou_range(argv[1], 0, 63);
xioctl(xopen(VC_1, O_RDONLY), TIOCLINUX, &arg);
return 0;
return EXIT_SUCCESS;
}