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https://github.com/troglobit/finit.git
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Joachim Nilsson
72bc3b1a91
This patch adds a `nologin` flag to the `tty` configuration directive,
making it possible to set up really simple embedded systems with no
login.
Example, put the following line in `/etc/finit.d/getty.conf` to get
a "Please press Enter to ..." prompt before being presented with a
root shell prompt.
tty [12345] @console noclear nologin
Needless to say, this is not very secure, but can be really useful
for developer setups, during board bringup, or similar.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Finit TTY handling
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*
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* Copyright (c) 2013 Mattias Walström <lazzer@gmail.com>
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* Copyright (c) 2013-2017 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef FINIT_TTY_H_
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#define FINIT_TTY_H_
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#include <limits.h>
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#include <sys/resource.h>
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#include <lite/queue.h> /* BSD sys/queue.h API */
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#define TTY_MAX_ARGS 16
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#define EVENT_SIZE ((sizeof(struct inotify_event) + NAME_MAX + 1))
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typedef struct {
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char *name;
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char *baud;
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char *term;
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int noclear;
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int nowait;
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int nologin;
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int runlevels;
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char *cmd; /* NULL when running built-in getty */
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char *args[TTY_MAX_ARGS];
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int pid;
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/* Limits and scoping */
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struct rlimit rlimit[RLIMIT_NLIMITS];
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} finit_tty_t;
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typedef struct tty_node {
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LIST_ENTRY(tty_node) link;
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finit_tty_t data;
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/* XXX: Yes, TTYs should be refactored into a separate SVC type. */
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int dirty; /* Set if old mtime != new mtime => reloaded,
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* or -1 when marked for removal */
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} tty_node_t;
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//extern LIST_HEAD(, tty_node) tty_list;
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void tty_mark (void);
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void tty_sweep (void);
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int tty_register (char *line, struct rlimit rlimit[], char *file);
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int tty_unregister (tty_node_t *tty);
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tty_node_t *tty_find (char *dev);
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size_t tty_num (void);
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size_t tty_num_active (void);
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tty_node_t *tty_find_by_pid (pid_t pid);
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void tty_start (finit_tty_t *tty);
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void tty_stop (finit_tty_t *tty);
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int tty_enabled (finit_tty_t *tty);
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int tty_respawn (pid_t pid);
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void tty_reload (char *dev);
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void tty_runlevel (void);
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#endif /* FINIT_TTY_H_ */
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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