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| l--------- | src/getty-generator/Makefile | 1 | ||||
| -rw-r--r-- | src/getty-generator/getty-generator.c | 230 |
2 files changed, 0 insertions, 231 deletions
diff --git a/src/getty-generator/Makefile b/src/getty-generator/Makefile deleted file mode 120000 index d0b0e8e008..0000000000 --- a/src/getty-generator/Makefile +++ /dev/null @@ -1 +0,0 @@ -../Makefile
\ No newline at end of file diff --git a/src/getty-generator/getty-generator.c b/src/getty-generator/getty-generator.c deleted file mode 100644 index f8f5fb30c2..0000000000 --- a/src/getty-generator/getty-generator.c +++ /dev/null @@ -1,230 +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 <string.h> -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> - -#include "log.h" -#include "util.h" -#include "mkdir.h" -#include "unit-name.h" -#include "virt.h" -#include "fileio.h" -#include "path-util.h" - -static const char *arg_dest = "/tmp"; - -static int add_symlink(const char *fservice, const char *tservice) { - char *from, *to; - int r; - - assert(fservice); - assert(tservice); - - from = strjoina(SYSTEM_DATA_UNIT_PATH "/", fservice); - to = strjoina(arg_dest, "/getty.target.wants/", tservice); - - mkdir_parents_label(to, 0755); - - r = symlink(from, to); - if (r < 0) { - if (errno == EEXIST) - /* In case console=hvc0 is passed this will very likely result in EEXIST */ - return 0; - else { - log_error_errno(errno, "Failed to create symlink %s: %m", to); - return -errno; - } - } - - return 0; -} - -static int add_serial_getty(const char *tty) { - _cleanup_free_ char *n = NULL; - - assert(tty); - - log_debug("Automatically adding serial getty for /dev/%s.", tty); - - n = unit_name_from_path_instance("serial-getty", tty, ".service"); - if (!n) - return log_oom(); - - return add_symlink("serial-getty@.service", n); -} - -static int add_container_getty(const char *tty) { - _cleanup_free_ char *n = NULL; - - assert(tty); - - log_debug("Automatically adding container getty for /dev/pts/%s.", tty); - - n = unit_name_from_path_instance("container-getty", tty, ".service"); - if (!n) - return log_oom(); - - return add_symlink("container-getty@.service", n); -} - -static int verify_tty(const char *name) { - _cleanup_close_ int fd = -1; - const char *p; - - /* Some TTYs are weird and have been enumerated but don't work - * when you try to use them, such as classic ttyS0 and - * friends. Let's check that and open the device and run - * isatty() on it. */ - - p = strjoina("/dev/", name); - - /* O_NONBLOCK is essential here, to make sure we don't wait - * for DCD */ - fd = open(p, O_RDWR|O_NONBLOCK|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW); - if (fd < 0) - return -errno; - - errno = 0; - if (isatty(fd) <= 0) - return errno ? -errno : -EIO; - - return 0; -} - -int main(int argc, char *argv[]) { - - static const char virtualization_consoles[] = - "hvc0\0" - "xvc0\0" - "hvsi0\0" - "sclp_line0\0" - "ttysclp0\0" - "3270!tty1\0"; - - _cleanup_free_ char *active = NULL; - const char *j; - int r; - - if (argc > 1 && argc != 4) { - log_error("This program takes three or no arguments."); - return EXIT_FAILURE; - } - - if (argc > 1) - arg_dest = argv[1]; - - log_set_target(LOG_TARGET_SAFE); - log_parse_environment(); - log_open(); - - umask(0022); - - if (detect_container(NULL) > 0) { - _cleanup_free_ char *container_ttys = NULL; - - log_debug("Automatically adding console shell."); - - if (add_symlink("console-getty.service", "console-getty.service") < 0) - return EXIT_FAILURE; - - /* When $container_ttys is set for PID 1, spawn - * gettys on all ptys named therein. Note that despite - * the variable name we only support ptys here. */ - - r = getenv_for_pid(1, "container_ttys", &container_ttys); - if (r > 0) { - const char *word, *state; - size_t l; - - FOREACH_WORD(word, l, container_ttys, state) { - const char *t; - char tty[l + 1]; - - memcpy(tty, word, l); - tty[l] = 0; - - /* First strip off /dev/ if it is specified */ - t = path_startswith(tty, "/dev/"); - if (!t) - t = tty; - - /* Then, make sure it's actually a pty */ - t = path_startswith(t, "pts/"); - if (!t) - continue; - - if (add_container_getty(t) < 0) - return EXIT_FAILURE; - } - } - - /* Don't add any further magic if we are in a container */ - return EXIT_SUCCESS; - } - - if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) { - const char *word, *state; - size_t l; - - /* Automatically add in a serial getty on all active - * kernel consoles */ - FOREACH_WORD(word, l, active, state) { - _cleanup_free_ char *tty = NULL; - - tty = strndup(word, l); - if (!tty) { - log_oom(); - return EXIT_FAILURE; - } - - if (isempty(tty) || tty_is_vc(tty)) - continue; - - if (verify_tty(tty) < 0) - continue; - - /* We assume that gettys on virtual terminals are - * started via manual configuration and do this magic - * only for non-VC terminals. */ - - if (add_serial_getty(tty) < 0) - return EXIT_FAILURE; - } - } - - /* Automatically add in a serial getty on the first - * virtualizer console */ - NULSTR_FOREACH(j, virtualization_consoles) { - char *p; - - p = strjoina("/sys/class/tty/", j); - if (access(p, F_OK) < 0) - continue; - - if (add_serial_getty(j) < 0) - return EXIT_FAILURE; - } - - return EXIT_SUCCESS; -} |