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https://github.com/topjohnwu/ndk-busybox.git
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68404f13d4
function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* tty implementation for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/tty.html */
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#include "libbb.h"
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int tty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int tty_main(int argc, char **argv SKIP_INCLUDE_SUSv2(ATTRIBUTE_UNUSED))
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{
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const char *s;
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USE_INCLUDE_SUSv2(int silent;) /* Note: No longer relevant in SUSv3. */
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int retval;
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xfunc_error_retval = 2; /* SUSv3 requires > 1 for error. */
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USE_INCLUDE_SUSv2(silent = getopt32(argv, "s");)
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USE_INCLUDE_SUSv2(argc -= optind;)
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SKIP_INCLUDE_SUSv2(argc -= 1;)
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/* gnu tty outputs a warning that it is ignoring all args. */
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bb_warn_ignoring_args(argc);
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retval = 0;
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s = ttyname(0);
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if (s == NULL) {
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/* According to SUSv3, ttyname can fail with EBADF or ENOTTY.
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* We know the file descriptor is good, so failure means not a tty. */
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s = "not a tty";
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retval = 1;
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}
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USE_INCLUDE_SUSv2(if (!silent) puts(s);)
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SKIP_INCLUDE_SUSv2(puts(s);)
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fflush_stdout_and_exit(retval);
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}
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