Isolation of udev code from remaining systemd

This commit is a first attempt to isolate the udev code from the
remaining code base.  It intentionally does not modify any files
but purely delete files which, on a first examination, appear to
not be needed.  This is a sweeping commit which may easily have
missed needed code.  Files can be retrieved by doing a checkout
from the previous commit:

 git checkout 2944f347d0 -- <filename>

1 files changed, 0 insertions, 576 deletions

diff --git a/src/shared/ask-password-api.c b/src/shared/ask-password-api.c
deleted file mode 100644
index 8a0fb89a84..0000000000
--- a/src/shared/ask-password-api.c
+++ /dev/null
@@ -1,576 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-#include <stdbool.h>
-#include <termios.h>
-#include <unistd.h>
-#include <sys/poll.h>
-#include <sys/inotify.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <string.h>
-#include <sys/un.h>
-#include <stddef.h>
-#include <sys/signalfd.h>
-
-#include "util.h"
-#include "mkdir.h"
-#include "strv.h"
-
-#include "ask-password-api.h"
-
-static void backspace_chars(int ttyfd, size_t p) {
-
-        if (ttyfd < 0)
-                return;
-
-        while (p > 0) {
-                p--;
-
-                loop_write(ttyfd, "\b \b", 3, false);
-        }
-}
-
-int ask_password_tty(
-                const char *message,
-                usec_t until,
-                const char *flag_file,
-                char **_passphrase) {
-
-        struct termios old_termios, new_termios;
-        char passphrase[LINE_MAX];
-        size_t p = 0;
-        int r, ttyfd = -1, notify = -1;
-        struct pollfd pollfd[2];
-        bool reset_tty = false;
-        bool silent_mode = false;
-        bool dirty = false;
-        enum {
-                POLL_TTY,
-                POLL_INOTIFY
-        };
-
-        assert(message);
-        assert(_passphrase);
-
-        if (flag_file) {
-                if ((notify = inotify_init1(IN_CLOEXEC|IN_NONBLOCK)) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (inotify_add_watch(notify, flag_file, IN_ATTRIB /* for the link count */) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-        }
-
-        if ((ttyfd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC)) >= 0) {
-
-                if (tcgetattr(ttyfd, &old_termios) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
-                loop_write(ttyfd, ANSI_HIGHLIGHT_ON, sizeof(ANSI_HIGHLIGHT_ON)-1, false);
-                loop_write(ttyfd, message, strlen(message), false);
-                loop_write(ttyfd, " ", 1, false);
-                loop_write(ttyfd, ANSI_HIGHLIGHT_OFF, sizeof(ANSI_HIGHLIGHT_OFF)-1, false);
-
-                new_termios = old_termios;
-                new_termios.c_lflag &= ~(ICANON|ECHO);
-                new_termios.c_cc[VMIN] = 1;
-                new_termios.c_cc[VTIME] = 0;
-
-                if (tcsetattr(ttyfd, TCSADRAIN, &new_termios) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
-                reset_tty = true;
-        }
-
-        zero(pollfd);
-
-        pollfd[POLL_TTY].fd = ttyfd >= 0 ? ttyfd : STDIN_FILENO;
-        pollfd[POLL_TTY].events = POLLIN;
-        pollfd[POLL_INOTIFY].fd = notify;
-        pollfd[POLL_INOTIFY].events = POLLIN;
-
-        for (;;) {
-                char c;
-                int sleep_for = -1, k;
-                ssize_t n;
-
-                if (until > 0) {
-                        usec_t y;
-
-                        y = now(CLOCK_MONOTONIC);
-
-                        if (y > until) {
-                                r = -ETIME;
-                                goto finish;
-                        }
-
-                        sleep_for = (int) ((until - y) / USEC_PER_MSEC);
-                }
-
-                if (flag_file)
-                        if (access(flag_file, F_OK) < 0) {
-                                r = -errno;
-                                goto finish;
-                        }
-
-                if ((k = poll(pollfd, notify > 0 ? 2 : 1, sleep_for)) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        r = -errno;
-                        goto finish;
-                } else if (k == 0) {
-                        r = -ETIME;
-                        goto finish;
-                }
-
-                if (notify > 0 && pollfd[POLL_INOTIFY].revents != 0)
-                        flush_fd(notify);
-
-                if (pollfd[POLL_TTY].revents == 0)
-                        continue;
-
-                if ((n = read(ttyfd >= 0 ? ttyfd : STDIN_FILENO, &c, 1)) < 0) {
-
-                        if (errno == EINTR || errno == EAGAIN)
-                                continue;
-
-                        r = -errno;
-                        goto finish;
-
-                } else if (n == 0)
-                        break;
-
-                if (c == '\n')
-                        break;
-                else if (c == 21) { /* C-u */
-
-                        if (!silent_mode)
-                                backspace_chars(ttyfd, p);
-                        p = 0;
-
-                } else if (c == '\b' || c == 127) {
-
-                        if (p > 0) {
-
-                                if (!silent_mode)
-                                        backspace_chars(ttyfd, 1);
-
-                                p--;
-                        } else if (!dirty && !silent_mode) {
-
-                                silent_mode = true;
-
-                                /* There are two ways to enter silent
-                                 * mode. Either by pressing backspace
-                                 * as first key (and only as first key),
-                                 * or ... */
-                                if (ttyfd >= 0)
-                                        loop_write(ttyfd, "(no echo) ", 10, false);
-
-                        } else if (ttyfd >= 0)
-                                loop_write(ttyfd, "\a", 1, false);
-
-                } else if (c == '\t' && !silent_mode) {
-
-                        backspace_chars(ttyfd, p);
-                        silent_mode = true;
-
-                        /* ... or by pressing TAB at any time. */
-
-                        if (ttyfd >= 0)
-                                loop_write(ttyfd, "(no echo) ", 10, false);
-                } else {
-                        passphrase[p++] = c;
-
-                        if (!silent_mode && ttyfd >= 0)
-                                loop_write(ttyfd, "*", 1, false);
-
-                        dirty = true;
-                }
-        }
-
-        passphrase[p] = 0;
-
-        if (!(*_passphrase = strdup(passphrase))) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        r = 0;
-
-finish:
-        if (notify >= 0)
-                close_nointr_nofail(notify);
-
-        if (ttyfd >= 0) {
-
-                if (reset_tty) {
-                        loop_write(ttyfd, "\n", 1, false);
-                        tcsetattr(ttyfd, TCSADRAIN, &old_termios);
-                }
-
-                close_nointr_nofail(ttyfd);
-        }
-
-        return r;
-}
-
-static int create_socket(char **name) {
-        int fd;
-        union {
-                struct sockaddr sa;
-                struct sockaddr_un un;
-        } sa;
-        int one = 1, r;
-        char *c;
-        mode_t u;
-
-        assert(name);
-
-        if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
-                log_error("socket() failed: %m");
-                return -errno;
-        }
-
-        zero(sa);
-        sa.un.sun_family = AF_UNIX;
-        snprintf(sa.un.sun_path, sizeof(sa.un.sun_path)-1, "/run/systemd/ask-password/sck.%llu", random_ull());
-
-        u = umask(0177);
-        r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
-        umask(u);
-
-        if (r < 0) {
-                r = -errno;
-                log_error("bind() failed: %m");
-                goto fail;
-        }
-
-        if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
-                r = -errno;
-                log_error("SO_PASSCRED failed: %m");
-                goto fail;
-        }
-
-        if (!(c = strdup(sa.un.sun_path))) {
-                r = log_oom();
-                goto fail;
-        }
-
-        *name = c;
-        return fd;
-
-fail:
-        close_nointr_nofail(fd);
-
-        return r;
-}
-
-int ask_password_agent(
-                const char *message,
-                const char *icon,
-                usec_t until,
-                bool accept_cached,
-                char ***_passphrases) {
-
-        enum {
-                FD_SOCKET,
-                FD_SIGNAL,
-                _FD_MAX
-        };
-
-        char temp[] = "/run/systemd/ask-password/tmp.XXXXXX";
-        char final[sizeof(temp)] = "";
-        int fd = -1, r;
-        FILE *f = NULL;
-        char *socket_name = NULL;
-        int socket_fd = -1, signal_fd = -1;
-        sigset_t mask, oldmask;
-        struct pollfd pollfd[_FD_MAX];
-        mode_t u;
-
-        assert(_passphrases);
-
-        assert_se(sigemptyset(&mask) == 0);
-        sigset_add_many(&mask, SIGINT, SIGTERM, -1);
-        assert_se(sigprocmask(SIG_BLOCK, &mask, &oldmask) == 0);
-
-        mkdir_p_label("/run/systemd/ask-password", 0755);
-
-        u = umask(0022);
-        fd = mkostemp(temp, O_CLOEXEC|O_CREAT|O_WRONLY);
-        umask(u);
-
-        if (fd < 0) {
-                log_error("Failed to create password file: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        fchmod(fd, 0644);
-
-        if (!(f = fdopen(fd, "w"))) {
-                log_error("Failed to allocate FILE: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        fd = -1;
-
-        if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) {
-                log_error("signalfd(): %m");
-                r = -errno;
-                goto finish;
-        }
-
-        if ((socket_fd = create_socket(&socket_name)) < 0) {
-                r = socket_fd;
-                goto finish;
-        }
-
-        fprintf(f,
-                "[Ask]\n"
-                "PID=%lu\n"
-                "Socket=%s\n"
-                "AcceptCached=%i\n"
-                "NotAfter=%llu\n",
-                (unsigned long) getpid(),
-                socket_name,
-                accept_cached ? 1 : 0,
-                (unsigned long long) until);
-
-        if (message)
-                fprintf(f, "Message=%s\n", message);
-
-        if (icon)
-                fprintf(f, "Icon=%s\n", icon);
-
-        fflush(f);
-
-        if (ferror(f)) {
-                log_error("Failed to write query file: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        memcpy(final, temp, sizeof(temp));
-
-        final[sizeof(final)-11] = 'a';
-        final[sizeof(final)-10] = 's';
-        final[sizeof(final)-9] = 'k';
-
-        if (rename(temp, final) < 0) {
-                log_error("Failed to rename query file: %m");
-                r = -errno;
-                goto finish;
-        }
-
-        zero(pollfd);
-        pollfd[FD_SOCKET].fd = socket_fd;
-        pollfd[FD_SOCKET].events = POLLIN;
-        pollfd[FD_SIGNAL].fd = signal_fd;
-        pollfd[FD_SIGNAL].events = POLLIN;
-
-        for (;;) {
-                char passphrase[LINE_MAX+1];
-                struct msghdr msghdr;
-                struct iovec iovec;
-                struct ucred *ucred;
-                union {
-                        struct cmsghdr cmsghdr;
-                        uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
-                } control;
-                ssize_t n;
-                int k;
-                usec_t t;
-
-                t = now(CLOCK_MONOTONIC);
-
-                if (until > 0 && until <= t) {
-                        log_notice("Timed out");
-                        r = -ETIME;
-                        goto finish;
-                }
-
-                if ((k = poll(pollfd, _FD_MAX, until > 0 ? (int) ((until-t)/USEC_PER_MSEC) : -1)) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        log_error("poll() failed: %m");
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (k <= 0) {
-                        log_notice("Timed out");
-                        r = -ETIME;
-                        goto finish;
-                }
-
-                if (pollfd[FD_SIGNAL].revents & POLLIN) {
-                        r = -EINTR;
-                        goto finish;
-                }
-
-                if (pollfd[FD_SOCKET].revents != POLLIN) {
-                        log_error("Unexpected poll() event.");
-                        r = -EIO;
-                        goto finish;
-                }
-
-                zero(iovec);
-                iovec.iov_base = passphrase;
-                iovec.iov_len = sizeof(passphrase);
-
-                zero(control);
-                zero(msghdr);
-                msghdr.msg_iov = &iovec;
-                msghdr.msg_iovlen = 1;
-                msghdr.msg_control = &control;
-                msghdr.msg_controllen = sizeof(control);
-
-                if ((n = recvmsg(socket_fd, &msghdr, 0)) < 0) {
-
-                        if (errno == EAGAIN ||
-                            errno == EINTR)
-                                continue;
-
-                        log_error("recvmsg() failed: %m");
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (n <= 0) {
-                        log_error("Message too short");
-                        continue;
-                }
-
-                if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
-                    control.cmsghdr.cmsg_level != SOL_SOCKET ||
-                    control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
-                    control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
-                        log_warning("Received message without credentials. Ignoring.");
-                        continue;
-                }
-
-                ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
-                if (ucred->uid != 0) {
-                        log_warning("Got request from unprivileged user. Ignoring.");
-                        continue;
-                }
-
-                if (passphrase[0] == '+') {
-                        char **l;
-
-                        if (n == 1)
-                                l = strv_new("", NULL);
-                        else
-                                l = strv_parse_nulstr(passphrase+1, n-1);
-                                /* An empty message refers to the empty password */
-
-                        if (!l) {
-                                r = -ENOMEM;
-                                goto finish;
-                        }
-
-                        if (strv_length(l) <= 0) {
-                                strv_free(l);
-                                log_error("Invalid packet");
-                                continue;
-                        }
-
-                        *_passphrases = l;
-
-                } else if (passphrase[0] == '-') {
-                        r = -ECANCELED;
-                        goto finish;
-                } else {
-                        log_error("Invalid packet");
-                        continue;
-                }
-
-                break;
-        }
-
-        r = 0;
-
-finish:
-        if (fd >= 0)
-                close_nointr_nofail(fd);
-
-        if (socket_name) {
-                unlink(socket_name);
-                free(socket_name);
-        }
-
-        if (socket_fd >= 0)
-                close_nointr_nofail(socket_fd);
-
-        if (signal_fd >= 0)
-                close_nointr_nofail(signal_fd);
-
-        if (f)
-                fclose(f);
-
-        unlink(temp);
-
-        if (final[0])
-                unlink(final);
-
-        assert_se(sigprocmask(SIG_SETMASK, &oldmask, NULL) == 0);
-
-        return r;
-}
-
-int ask_password_auto(const char *message, const char *icon, usec_t until, bool accept_cached, char ***_passphrases) {
-        assert(message);
-        assert(_passphrases);
-
-        if (isatty(STDIN_FILENO)) {
-                int r;
-                char *s = NULL, **l = NULL;
-
-                if ((r = ask_password_tty(message, until, NULL, &s)) < 0)
-                        return r;
-
-                l = strv_new(s, NULL);
-                free(s);
-
-                if (!l)
-                        return -ENOMEM;
-
-                *_passphrases = l;
-                return r;
-
-        } else
-                return ask_password_agent(message, icon, until, accept_cached, _passphrases);
-}