shared: add terminal-util.[ch]

1 files changed, 1 insertions, 1037 deletions

diff --git a/src/shared/util.c b/src/shared/util.c
index e4c4dd92f1..508b5d1433 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -35,9 +35,6 @@
 #include <fcntl.h>
 #include <dirent.h>
 #include <sys/ioctl.h>
-#include <linux/vt.h>
-#include <linux/tiocl.h>
-#include <termios.h>
 #include <stdarg.h>
 #include <poll.h>
 #include <ctype.h>
@@ -45,7 +42,6 @@
 #include <sys/utsname.h>
 #include <pwd.h>
 #include <netinet/ip.h>
-#include <linux/kd.h>
 #include <sys/wait.h>
 #include <sys/time.h>
 #include <glob.h>
@@ -95,6 +91,7 @@
 #include "formats-util.h"
 #include "process-util.h"
 #include "random-util.h"
+#include "terminal-util.h"
 
 /* Put this test here for a lack of better place */
 assert_cc(EAGAIN == EWOULDBLOCK);
@@ -102,9 +99,6 @@ assert_cc(EAGAIN == EWOULDBLOCK);
 int saved_argc = 0;
 char **saved_argv = NULL;
 
-static volatile unsigned cached_columns = 0;
-static volatile unsigned cached_lines = 0;
-
 size_t page_size(void) {
         static thread_local size_t pgsz = 0;
         long r;
@@ -1509,301 +1503,6 @@ bool fstype_is_network(const char *fstype) {
         return nulstr_contains(table, fstype);
 }
 
-int chvt(int vt) {
-        _cleanup_close_ int fd;
-
-        fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        if (vt < 0) {
-                int tiocl[2] = {
-                        TIOCL_GETKMSGREDIRECT,
-                        0
-                };
-
-                if (ioctl(fd, TIOCLINUX, tiocl) < 0)
-                        return -errno;
-
-                vt = tiocl[0] <= 0 ? 1 : tiocl[0];
-        }
-
-        if (ioctl(fd, VT_ACTIVATE, vt) < 0)
-                return -errno;
-
-        return 0;
-}
-
-int read_one_char(FILE *f, char *ret, usec_t t, bool *need_nl) {
-        struct termios old_termios, new_termios;
-        char c, line[LINE_MAX];
-
-        assert(f);
-        assert(ret);
-
-        if (tcgetattr(fileno(f), &old_termios) >= 0) {
-                new_termios = old_termios;
-
-                new_termios.c_lflag &= ~ICANON;
-                new_termios.c_cc[VMIN] = 1;
-                new_termios.c_cc[VTIME] = 0;
-
-                if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) {
-                        size_t k;
-
-                        if (t != USEC_INFINITY) {
-                                if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0) {
-                                        tcsetattr(fileno(f), TCSADRAIN, &old_termios);
-                                        return -ETIMEDOUT;
-                                }
-                        }
-
-                        k = fread(&c, 1, 1, f);
-
-                        tcsetattr(fileno(f), TCSADRAIN, &old_termios);
-
-                        if (k <= 0)
-                                return -EIO;
-
-                        if (need_nl)
-                                *need_nl = c != '\n';
-
-                        *ret = c;
-                        return 0;
-                }
-        }
-
-        if (t != USEC_INFINITY) {
-                if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0)
-                        return -ETIMEDOUT;
-        }
-
-        errno = 0;
-        if (!fgets(line, sizeof(line), f))
-                return errno ? -errno : -EIO;
-
-        truncate_nl(line);
-
-        if (strlen(line) != 1)
-                return -EBADMSG;
-
-        if (need_nl)
-                *need_nl = false;
-
-        *ret = line[0];
-        return 0;
-}
-
-int ask_char(char *ret, const char *replies, const char *text, ...) {
-        int r;
-
-        assert(ret);
-        assert(replies);
-        assert(text);
-
-        for (;;) {
-                va_list ap;
-                char c;
-                bool need_nl = true;
-
-                if (on_tty())
-                        fputs(ANSI_HIGHLIGHT_ON, stdout);
-
-                va_start(ap, text);
-                vprintf(text, ap);
-                va_end(ap);
-
-                if (on_tty())
-                        fputs(ANSI_HIGHLIGHT_OFF, stdout);
-
-                fflush(stdout);
-
-                r = read_one_char(stdin, &c, USEC_INFINITY, &need_nl);
-                if (r < 0) {
-
-                        if (r == -EBADMSG) {
-                                puts("Bad input, please try again.");
-                                continue;
-                        }
-
-                        putchar('\n');
-                        return r;
-                }
-
-                if (need_nl)
-                        putchar('\n');
-
-                if (strchr(replies, c)) {
-                        *ret = c;
-                        return 0;
-                }
-
-                puts("Read unexpected character, please try again.");
-        }
-}
-
-int ask_string(char **ret, const char *text, ...) {
-        assert(ret);
-        assert(text);
-
-        for (;;) {
-                char line[LINE_MAX];
-                va_list ap;
-
-                if (on_tty())
-                        fputs(ANSI_HIGHLIGHT_ON, stdout);
-
-                va_start(ap, text);
-                vprintf(text, ap);
-                va_end(ap);
-
-                if (on_tty())
-                        fputs(ANSI_HIGHLIGHT_OFF, stdout);
-
-                fflush(stdout);
-
-                errno = 0;
-                if (!fgets(line, sizeof(line), stdin))
-                        return errno ? -errno : -EIO;
-
-                if (!endswith(line, "\n"))
-                        putchar('\n');
-                else {
-                        char *s;
-
-                        if (isempty(line))
-                                continue;
-
-                        truncate_nl(line);
-                        s = strdup(line);
-                        if (!s)
-                                return -ENOMEM;
-
-                        *ret = s;
-                        return 0;
-                }
-        }
-}
-
-int reset_terminal_fd(int fd, bool switch_to_text) {
-        struct termios termios;
-        int r = 0;
-
-        /* Set terminal to some sane defaults */
-
-        assert(fd >= 0);
-
-        /* We leave locked terminal attributes untouched, so that
-         * Plymouth may set whatever it wants to set, and we don't
-         * interfere with that. */
-
-        /* Disable exclusive mode, just in case */
-        ioctl(fd, TIOCNXCL);
-
-        /* Switch to text mode */
-        if (switch_to_text)
-                ioctl(fd, KDSETMODE, KD_TEXT);
-
-        /* Enable console unicode mode */
-        ioctl(fd, KDSKBMODE, K_UNICODE);
-
-        if (tcgetattr(fd, &termios) < 0) {
-                r = -errno;
-                goto finish;
-        }
-
-        /* We only reset the stuff that matters to the software. How
-         * hardware is set up we don't touch assuming that somebody
-         * else will do that for us */
-
-        termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC);
-        termios.c_iflag |= ICRNL | IMAXBEL | IUTF8;
-        termios.c_oflag |= ONLCR;
-        termios.c_cflag |= CREAD;
-        termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE;
-
-        termios.c_cc[VINTR]    =   03;  /* ^C */
-        termios.c_cc[VQUIT]    =  034;  /* ^\ */
-        termios.c_cc[VERASE]   = 0177;
-        termios.c_cc[VKILL]    =  025;  /* ^X */
-        termios.c_cc[VEOF]     =   04;  /* ^D */
-        termios.c_cc[VSTART]   =  021;  /* ^Q */
-        termios.c_cc[VSTOP]    =  023;  /* ^S */
-        termios.c_cc[VSUSP]    =  032;  /* ^Z */
-        termios.c_cc[VLNEXT]   =  026;  /* ^V */
-        termios.c_cc[VWERASE]  =  027;  /* ^W */
-        termios.c_cc[VREPRINT] =  022;  /* ^R */
-        termios.c_cc[VEOL]     =    0;
-        termios.c_cc[VEOL2]    =    0;
-
-        termios.c_cc[VTIME]  = 0;
-        termios.c_cc[VMIN]   = 1;
-
-        if (tcsetattr(fd, TCSANOW, &termios) < 0)
-                r = -errno;
-
-finish:
-        /* Just in case, flush all crap out */
-        tcflush(fd, TCIOFLUSH);
-
-        return r;
-}
-
-int reset_terminal(const char *name) {
-        _cleanup_close_ int fd = -1;
-
-        fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
-        return reset_terminal_fd(fd, true);
-}
-
-int open_terminal(const char *name, int mode) {
-        int fd, r;
-        unsigned c = 0;
-
-        /*
-         * If a TTY is in the process of being closed opening it might
-         * cause EIO. This is horribly awful, but unlikely to be
-         * changed in the kernel. Hence we work around this problem by
-         * retrying a couple of times.
-         *
-         * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/554172/comments/245
-         */
-
-        assert(!(mode & O_CREAT));
-
-        for (;;) {
-                fd = open(name, mode, 0);
-                if (fd >= 0)
-                        break;
-
-                if (errno != EIO)
-                        return -errno;
-
-                /* Max 1s in total */
-                if (c >= 20)
-                        return -errno;
-
-                usleep(50 * USEC_PER_MSEC);
-                c++;
-        }
-
-        r = isatty(fd);
-        if (r < 0) {
-                safe_close(fd);
-                return -errno;
-        }
-
-        if (!r) {
-                safe_close(fd);
-                return -ENOTTY;
-        }
-
-        return fd;
-}
-
 int flush_fd(int fd) {
         struct pollfd pollfd = {
                 .fd = fd,
@@ -1840,185 +1539,6 @@ int flush_fd(int fd) {
         }
 }
 
-int acquire_terminal(
-                const char *name,
-                bool fail,
-                bool force,
-                bool ignore_tiocstty_eperm,
-                usec_t timeout) {
-
-        int fd = -1, notify = -1, r = 0, wd = -1;
-        usec_t ts = 0;
-
-        assert(name);
-
-        /* We use inotify to be notified when the tty is closed. We
-         * create the watch before checking if we can actually acquire
-         * it, so that we don't lose any event.
-         *
-         * Note: strictly speaking this actually watches for the
-         * device being closed, it does *not* really watch whether a
-         * tty loses its controlling process. However, unless some
-         * rogue process uses TIOCNOTTY on /dev/tty *after* closing
-         * its tty otherwise this will not become a problem. As long
-         * as the administrator makes sure not configure any service
-         * on the same tty as an untrusted user this should not be a
-         * problem. (Which he probably should not do anyway.) */
-
-        if (timeout != USEC_INFINITY)
-                ts = now(CLOCK_MONOTONIC);
-
-        if (!fail && !force) {
-                notify = inotify_init1(IN_CLOEXEC | (timeout != USEC_INFINITY ? IN_NONBLOCK : 0));
-                if (notify < 0) {
-                        r = -errno;
-                        goto fail;
-                }
-
-                wd = inotify_add_watch(notify, name, IN_CLOSE);
-                if (wd < 0) {
-                        r = -errno;
-                        goto fail;
-                }
-        }
-
-        for (;;) {
-                struct sigaction sa_old, sa_new = {
-                        .sa_handler = SIG_IGN,
-                        .sa_flags = SA_RESTART,
-                };
-
-                if (notify >= 0) {
-                        r = flush_fd(notify);
-                        if (r < 0)
-                                goto fail;
-                }
-
-                /* We pass here O_NOCTTY only so that we can check the return
-                 * value TIOCSCTTY and have a reliable way to figure out if we
-                 * successfully became the controlling process of the tty */
-                fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
-                if (fd < 0)
-                        return fd;
-
-                /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed
-                 * if we already own the tty. */
-                assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0);
-
-                /* First, try to get the tty */
-                if (ioctl(fd, TIOCSCTTY, force) < 0)
-                        r = -errno;
-
-                assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);
-
-                /* Sometimes it makes sense to ignore TIOCSCTTY
-                 * returning EPERM, i.e. when very likely we already
-                 * are have this controlling terminal. */
-                if (r < 0 && r == -EPERM && ignore_tiocstty_eperm)
-                        r = 0;
-
-                if (r < 0 && (force || fail || r != -EPERM)) {
-                        goto fail;
-                }
-
-                if (r >= 0)
-                        break;
-
-                assert(!fail);
-                assert(!force);
-                assert(notify >= 0);
-
-                for (;;) {
-                        union inotify_event_buffer buffer;
-                        struct inotify_event *e;
-                        ssize_t l;
-
-                        if (timeout != USEC_INFINITY) {
-                                usec_t n;
-
-                                n = now(CLOCK_MONOTONIC);
-                                if (ts + timeout < n) {
-                                        r = -ETIMEDOUT;
-                                        goto fail;
-                                }
-
-                                r = fd_wait_for_event(fd, POLLIN, ts + timeout - n);
-                                if (r < 0)
-                                        goto fail;
-
-                                if (r == 0) {
-                                        r = -ETIMEDOUT;
-                                        goto fail;
-                                }
-                        }
-
-                        l = read(notify, &buffer, sizeof(buffer));
-                        if (l < 0) {
-                                if (errno == EINTR || errno == EAGAIN)
-                                        continue;
-
-                                r = -errno;
-                                goto fail;
-                        }
-
-                        FOREACH_INOTIFY_EVENT(e, buffer, l) {
-                                if (e->wd != wd || !(e->mask & IN_CLOSE)) {
-                                        r = -EIO;
-                                        goto fail;
-                                }
-                        }
-
-                        break;
-                }
-
-                /* We close the tty fd here since if the old session
-                 * ended our handle will be dead. It's important that
-                 * we do this after sleeping, so that we don't enter
-                 * an endless loop. */
-                fd = safe_close(fd);
-        }
-
-        safe_close(notify);
-
-        r = reset_terminal_fd(fd, true);
-        if (r < 0)
-                log_warning_errno(r, "Failed to reset terminal: %m");
-
-        return fd;
-
-fail:
-        safe_close(fd);
-        safe_close(notify);
-
-        return r;
-}
-
-int release_terminal(void) {
-        static const struct sigaction sa_new = {
-                .sa_handler = SIG_IGN,
-                .sa_flags = SA_RESTART,
-        };
-
-        _cleanup_close_ int fd = -1;
-        struct sigaction sa_old;
-        int r = 0;
-
-        fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed
-         * by our own TIOCNOTTY */
-        assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0);
-
-        if (ioctl(fd, TIOCNOTTY) < 0)
-                r = -errno;
-
-        assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);
-
-        return r;
-}
-
 int sigaction_many(const struct sigaction *sa, ...) {
         va_list ap;
         int r = 0, sig;
@@ -2303,40 +1823,6 @@ int parse_size(const char *t, off_t base, off_t *size) {
         return 0;
 }
 
-int make_stdio(int fd) {
-        int r, s, t;
-
-        assert(fd >= 0);
-
-        r = dup2(fd, STDIN_FILENO);
-        s = dup2(fd, STDOUT_FILENO);
-        t = dup2(fd, STDERR_FILENO);
-
-        if (fd >= 3)
-                safe_close(fd);
-
-        if (r < 0 || s < 0 || t < 0)
-                return -errno;
-
-        /* Explicitly unset O_CLOEXEC, since if fd was < 3, then
-         * dup2() was a NOP and the bit hence possibly set. */
-        fd_cloexec(STDIN_FILENO, false);
-        fd_cloexec(STDOUT_FILENO, false);
-        fd_cloexec(STDERR_FILENO, false);
-
-        return 0;
-}
-
-int make_null_stdio(void) {
-        int null_fd;
-
-        null_fd = open("/dev/null", O_RDWR|O_NOCTTY);
-        if (null_fd < 0)
-                return -errno;
-
-        return make_stdio(null_fd);
-}
-
 bool is_device_path(const char *path) {
 
         /* Returns true on paths that refer to a device, either in
@@ -2517,147 +2003,6 @@ char *getusername_malloc(void) {
         return lookup_uid(getuid());
 }
 
-int getttyname_malloc(int fd, char **ret) {
-        size_t l = 100;
-        int r;
-
-        assert(fd >= 0);
-        assert(ret);
-
-        for (;;) {
-                char path[l];
-
-                r = ttyname_r(fd, path, sizeof(path));
-                if (r == 0) {
-                        const char *p;
-                        char *c;
-
-                        p = startswith(path, "/dev/");
-                        c = strdup(p ?: path);
-                        if (!c)
-                                return -ENOMEM;
-
-                        *ret = c;
-                        return 0;
-                }
-
-                if (r != ERANGE)
-                        return -r;
-
-                l *= 2;
-        }
-
-        return 0;
-}
-
-int getttyname_harder(int fd, char **r) {
-        int k;
-        char *s = NULL;
-
-        k = getttyname_malloc(fd, &s);
-        if (k < 0)
-                return k;
-
-        if (streq(s, "tty")) {
-                free(s);
-                return get_ctty(0, NULL, r);
-        }
-
-        *r = s;
-        return 0;
-}
-
-int get_ctty_devnr(pid_t pid, dev_t *d) {
-        int r;
-        _cleanup_free_ char *line = NULL;
-        const char *p;
-        unsigned long ttynr;
-
-        assert(pid >= 0);
-
-        p = procfs_file_alloca(pid, "stat");
-        r = read_one_line_file(p, &line);
-        if (r < 0)
-                return r;
-
-        p = strrchr(line, ')');
-        if (!p)
-                return -EIO;
-
-        p++;
-
-        if (sscanf(p, " "
-                   "%*c "  /* state */
-                   "%*d "  /* ppid */
-                   "%*d "  /* pgrp */
-                   "%*d "  /* session */
-                   "%lu ", /* ttynr */
-                   &ttynr) != 1)
-                return -EIO;
-
-        if (major(ttynr) == 0 && minor(ttynr) == 0)
-                return -ENOENT;
-
-        if (d)
-                *d = (dev_t) ttynr;
-
-        return 0;
-}
-
-int get_ctty(pid_t pid, dev_t *_devnr, char **r) {
-        char fn[sizeof("/dev/char/")-1 + 2*DECIMAL_STR_MAX(unsigned) + 1 + 1], *b = NULL;
-        _cleanup_free_ char *s = NULL;
-        const char *p;
-        dev_t devnr;
-        int k;
-
-        assert(r);
-
-        k = get_ctty_devnr(pid, &devnr);
-        if (k < 0)
-                return k;
-
-        sprintf(fn, "/dev/char/%u:%u", major(devnr), minor(devnr));
-
-        k = readlink_malloc(fn, &s);
-        if (k < 0) {
-
-                if (k != -ENOENT)
-                        return k;
-
-                /* This is an ugly hack */
-                if (major(devnr) == 136) {
-                        if (asprintf(&b, "pts/%u", minor(devnr)) < 0)
-                                return -ENOMEM;
-                } else {
-                        /* Probably something like the ptys which have no
-                         * symlink in /dev/char. Let's return something
-                         * vaguely useful. */
-
-                        b = strdup(fn + 5);
-                        if (!b)
-                                return -ENOMEM;
-                }
-        } else {
-                if (startswith(s, "/dev/"))
-                        p = s + 5;
-                else if (startswith(s, "../"))
-                        p = s + 3;
-                else
-                        p = s;
-
-                b = strdup(p);
-                if (!b)
-                        return -ENOMEM;
-        }
-
-        *r = b;
-        if (_devnr)
-                *_devnr = devnr;
-
-        return 0;
-}
-
 bool is_temporary_fs(const struct statfs *s) {
         assert(s);
 
@@ -2738,84 +2083,6 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
         }
 }
 
-int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) {
-        static const char status_indent[] = "         "; /* "[" STATUS "] " */
-        _cleanup_free_ char *s = NULL;
-        _cleanup_close_ int fd = -1;
-        struct iovec iovec[6] = {};
-        int n = 0;
-        static bool prev_ephemeral;
-
-        assert(format);
-
-        /* This is independent of logging, as status messages are
-         * optional and go exclusively to the console. */
-
-        if (vasprintf(&s, format, ap) < 0)
-                return log_oom();
-
-        fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
-        if (ellipse) {
-                char *e;
-                size_t emax, sl;
-                int c;
-
-                c = fd_columns(fd);
-                if (c <= 0)
-                        c = 80;
-
-                sl = status ? sizeof(status_indent)-1 : 0;
-
-                emax = c - sl - 1;
-                if (emax < 3)
-                        emax = 3;
-
-                e = ellipsize(s, emax, 50);
-                if (e) {
-                        free(s);
-                        s = e;
-                }
-        }
-
-        if (prev_ephemeral)
-                IOVEC_SET_STRING(iovec[n++], "\r" ANSI_ERASE_TO_END_OF_LINE);
-        prev_ephemeral = ephemeral;
-
-        if (status) {
-                if (!isempty(status)) {
-                        IOVEC_SET_STRING(iovec[n++], "[");
-                        IOVEC_SET_STRING(iovec[n++], status);
-                        IOVEC_SET_STRING(iovec[n++], "] ");
-                } else
-                        IOVEC_SET_STRING(iovec[n++], status_indent);
-        }
-
-        IOVEC_SET_STRING(iovec[n++], s);
-        if (!ephemeral)
-                IOVEC_SET_STRING(iovec[n++], "\n");
-
-        if (writev(fd, iovec, n) < 0)
-                return -errno;
-
-        return 0;
-}
-
-int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) {
-        va_list ap;
-        int r;
-
-        assert(format);
-
-        va_start(ap, format);
-        r = status_vprintf(status, ellipse, ephemeral, format, ap);
-        va_end(ap);
-
-        return r;
-}
-
 char *replace_env(const char *format, char **env) {
         enum {
                 WORD,
@@ -2960,89 +2227,6 @@ char **replace_env_argv(char **argv, char **env) {
         return ret;
 }
 
-int fd_columns(int fd) {
-        struct winsize ws = {};
-
-        if (ioctl(fd, TIOCGWINSZ, &ws) < 0)
-                return -errno;
-
-        if (ws.ws_col <= 0)
-                return -EIO;
-
-        return ws.ws_col;
-}
-
-unsigned columns(void) {
-        const char *e;
-        int c;
-
-        if (_likely_(cached_columns > 0))
-                return cached_columns;
-
-        c = 0;
-        e = getenv("COLUMNS");
-        if (e)
-                (void) safe_atoi(e, &c);
-
-        if (c <= 0)
-                c = fd_columns(STDOUT_FILENO);
-
-        if (c <= 0)
-                c = 80;
-
-        cached_columns = c;
-        return cached_columns;
-}
-
-int fd_lines(int fd) {
-        struct winsize ws = {};
-
-        if (ioctl(fd, TIOCGWINSZ, &ws) < 0)
-                return -errno;
-
-        if (ws.ws_row <= 0)
-                return -EIO;
-
-        return ws.ws_row;
-}
-
-unsigned lines(void) {
-        const char *e;
-        int l;
-
-        if (_likely_(cached_lines > 0))
-                return cached_lines;
-
-        l = 0;
-        e = getenv("LINES");
-        if (e)
-                (void) safe_atoi(e, &l);
-
-        if (l <= 0)
-                l = fd_lines(STDOUT_FILENO);
-
-        if (l <= 0)
-                l = 24;
-
-        cached_lines = l;
-        return cached_lines;
-}
-
-/* intended to be used as a SIGWINCH sighandler */
-void columns_lines_cache_reset(int signum) {
-        cached_columns = 0;
-        cached_lines = 0;
-}
-
-bool on_tty(void) {
-        static int cached_on_tty = -1;
-
-        if (_unlikely_(cached_on_tty < 0))
-                cached_on_tty = isatty(STDOUT_FILENO) > 0;
-
-        return cached_on_tty;
-}
-
 int files_same(const char *filea, const char *fileb) {
         struct stat a, b;
 
@@ -3351,101 +2535,6 @@ char *fstab_node_to_udev_node(const char *p) {
         return strdup(p);
 }
 
-bool tty_is_vc(const char *tty) {
-        assert(tty);
-
-        return vtnr_from_tty(tty) >= 0;
-}
-
-bool tty_is_console(const char *tty) {
-        assert(tty);
-
-        if (startswith(tty, "/dev/"))
-                tty += 5;
-
-        return streq(tty, "console");
-}
-
-int vtnr_from_tty(const char *tty) {
-        int i, r;
-
-        assert(tty);
-
-        if (startswith(tty, "/dev/"))
-                tty += 5;
-
-        if (!startswith(tty, "tty") )
-                return -EINVAL;
-
-        if (tty[3] < '0' || tty[3] > '9')
-                return -EINVAL;
-
-        r = safe_atoi(tty+3, &i);
-        if (r < 0)
-                return r;
-
-        if (i < 0 || i > 63)
-                return -EINVAL;
-
-        return i;
-}
-
-char *resolve_dev_console(char **active) {
-        char *tty;
-
-        /* Resolve where /dev/console is pointing to, if /sys is actually ours
-         * (i.e. not read-only-mounted which is a sign for container setups) */
-
-        if (path_is_read_only_fs("/sys") > 0)
-                return NULL;
-
-        if (read_one_line_file("/sys/class/tty/console/active", active) < 0)
-                return NULL;
-
-        /* If multiple log outputs are configured the last one is what
-         * /dev/console points to */
-        tty = strrchr(*active, ' ');
-        if (tty)
-                tty++;
-        else
-                tty = *active;
-
-        if (streq(tty, "tty0")) {
-                char *tmp;
-
-                /* Get the active VC (e.g. tty1) */
-                if (read_one_line_file("/sys/class/tty/tty0/active", &tmp) >= 0) {
-                        free(*active);
-                        tty = *active = tmp;
-                }
-        }
-
-        return tty;
-}
-
-bool tty_is_vc_resolve(const char *tty) {
-        _cleanup_free_ char *active = NULL;
-
-        assert(tty);
-
-        if (startswith(tty, "/dev/"))
-                tty += 5;
-
-        if (streq(tty, "console")) {
-                tty = resolve_dev_console(&active);
-                if (!tty)
-                        return false;
-        }
-
-        return tty_is_vc(tty);
-}
-
-const char *default_term_for_tty(const char *tty) {
-        assert(tty);
-
-        return tty_is_vc_resolve(tty) ? "TERM=linux" : "TERM=vt220";
-}
-
 bool dirent_is_file(const struct dirent *de) {
         assert(de);
 
@@ -3798,94 +2887,6 @@ int fopen_temporary(const char *path, FILE **_f, char **_temp_path) {
         return 0;
 }
 
-int terminal_vhangup_fd(int fd) {
-        assert(fd >= 0);
-
-        if (ioctl(fd, TIOCVHANGUP) < 0)
-                return -errno;
-
-        return 0;
-}
-
-int terminal_vhangup(const char *name) {
-        _cleanup_close_ int fd;
-
-        fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
-        return terminal_vhangup_fd(fd);
-}
-
-int vt_disallocate(const char *name) {
-        int fd, r;
-        unsigned u;
-
-        /* Deallocate the VT if possible. If not possible
-         * (i.e. because it is the active one), at least clear it
-         * entirely (including the scrollback buffer) */
-
-        if (!startswith(name, "/dev/"))
-                return -EINVAL;
-
-        if (!tty_is_vc(name)) {
-                /* So this is not a VT. I guess we cannot deallocate
-                 * it then. But let's at least clear the screen */
-
-                fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
-                if (fd < 0)
-                        return fd;
-
-                loop_write(fd,
-                           "\033[r"    /* clear scrolling region */
-                           "\033[H"    /* move home */
-                           "\033[2J",  /* clear screen */
-                           10, false);
-                safe_close(fd);
-
-                return 0;
-        }
-
-        if (!startswith(name, "/dev/tty"))
-                return -EINVAL;
-
-        r = safe_atou(name+8, &u);
-        if (r < 0)
-                return r;
-
-        if (u <= 0)
-                return -EINVAL;
-
-        /* Try to deallocate */
-        fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
-        r = ioctl(fd, VT_DISALLOCATE, u);
-        safe_close(fd);
-
-        if (r >= 0)
-                return 0;
-
-        if (errno != EBUSY)
-                return -errno;
-
-        /* Couldn't deallocate, so let's clear it fully with
-         * scrollback */
-        fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
-        loop_write(fd,
-                   "\033[r"   /* clear scrolling region */
-                   "\033[H"   /* move home */
-                   "\033[3J", /* clear screen including scrollback, requires Linux 2.6.40 */
-                   10, false);
-        safe_close(fd);
-
-        return 0;
-}
-
 int symlink_atomic(const char *from, const char *to) {
         _cleanup_free_ char *t = NULL;
         int r;
@@ -4898,43 +3899,6 @@ bool in_initrd(void) {
         return saved;
 }
 
-void warn_melody(void) {
-        _cleanup_close_ int fd = -1;
-
-        fd = open("/dev/console", O_WRONLY|O_CLOEXEC|O_NOCTTY);
-        if (fd < 0)
-                return;
-
-        /* Yeah, this is synchronous. Kinda sucks. But well... */
-
-        ioctl(fd, KIOCSOUND, (int)(1193180/440));
-        usleep(125*USEC_PER_MSEC);
-
-        ioctl(fd, KIOCSOUND, (int)(1193180/220));
-        usleep(125*USEC_PER_MSEC);
-
-        ioctl(fd, KIOCSOUND, (int)(1193180/220));
-        usleep(125*USEC_PER_MSEC);
-
-        ioctl(fd, KIOCSOUND, 0);
-}
-
-int make_console_stdio(void) {
-        int fd, r;
-
-        /* Make /dev/console the controlling terminal and stdin/stdout/stderr */
-
-        fd = acquire_terminal("/dev/console", false, true, true, USEC_INFINITY);
-        if (fd < 0)
-                return log_error_errno(fd, "Failed to acquire terminal: %m");
-
-        r = make_stdio(fd);
-        if (r < 0)
-                return log_error_errno(r, "Failed to duplicate terminal fd: %m");
-
-        return 0;
-}
-
 int get_home_dir(char **_h) {
         struct passwd *p;
         const char *e;