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mesg applet by Manuel Novoa III

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This commit is contained in:
Glenn L McGrath 2002-09-16 04:21:46 +00:00
parent ebdc8b48a5
commit 061c900176
5 changed files with 70 additions and 0 deletions
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3
include/applets.h
View File

@ -293,6 +293,9 @@
#ifdef CONFIG_MD5SUM
APPLET(md5sum, md5sum_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
#endif
#ifdef CONFIG_MESG
APPLET(mesg, mesg_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
#endif
#ifdef CONFIG_MKDIR
APPLET(mkdir, mkdir_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif

7
include/usage.h
View File

@ -1149,6 +1149,13 @@
"busybox: OK\n" \
"^D\n"
#define mesg_trivial_usage \
"mesg [y|n]"
#define mesg_full_usage \
"mesg [Y|N], controls write access to your terminal\n" \
"\ty\tAllow write access to your terminal.\n" \
"\tn\tDisallow write access to your terminal.\n"
#define mkdir_trivial_usage \
"[OPTION] DIRECTORY..."
#define mkdir_full_usage \

1
init/Makefile.in
View File

@ -25,6 +25,7 @@ endif
INIT-y:=
INIT-$(CONFIG_HALT) += halt.o
INIT-$(CONFIG_INIT) += init.o
INIT-$(CONFIG_MESG) += mesg.o
INIT-$(CONFIG_POWEROFF) += poweroff.o
INIT-$(CONFIG_REBOOT) += reboot.o
INIT-$(CONFIG_START_STOP_DAEMON) += start_stop_daemon.o

1
init/config.in
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@ -22,6 +22,7 @@ fi
bool 'start-stop-daemon' CONFIG_START_STOP_DAEMON
bool 'run-parts' CONFIG_RUN_PARTS
bool 'mesg' CONFIG_MESG
endmenu

58
init/mesg.c Normal file
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@ -0,0 +1,58 @@
/*
* mesg implementation for busybox
*
* Copyright (c) 2002 Manuel Novoa III <mjn3@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include <stdlib.h>
#include "libbb.h"
#ifdef USE_TTY_GROUP
#define S_IWGRP_OR_S_IWOTH S_IWGRP
#else
#define S_IWGRP_OR_S_IWOTH (S_IWGRP | S_IWOTH)
#endif
extern int mesg_main(int argc, char *argv[])
{
struct stat sb;
char *tty;
char c;
if ((--argc == 0)
|| ((argc == 1) && (((c = **++argv) == 'y') || (c == 'n')))) {
if ((tty = ttyname(STDERR_FILENO)) == NULL) {
tty = "ttyname";
} else if (stat(tty, &sb) == 0) {
if (argc == 0) {
puts(((sb.st_mode & (S_IWGRP | S_IWOTH)) ==
0) ? "is n" : "is y");
return EXIT_SUCCESS;
}
if (chmod
(tty,
(c ==
'y') ? sb.st_mode | (S_IWGRP_OR_S_IWOTH) : sb.
st_mode & ~(S_IWGRP | S_IWOTH)) == 0) {
return EXIT_SUCCESS;
}
}
perror_msg_and_die("%s", tty);
}
show_usage();
}