mirror of
https://github.com/troglobit/finit.git
synced 2026-10-02 14:02:52 +07:00
Mathias Thore
a0685219cf
Adds the function fistmpfs to determine if a new tmpfs mount should be performed on /run and /tmp. The function supports cases where more complex mount hierarchies are in use, including overlayfs backed mounts. Signed-off-by: Mathias Thore <mathias.thore@atlascopco.com>
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/* Misc. shared utility functions for initctl, reboot and finit
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*
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* Copyright (c) 2016-2024 Joachim Wiberg <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_UTIL_H_
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#define FINIT_UTIL_H_
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#include "config.h"
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#ifdef HAVE_TERMIOS_H
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#include <poll.h>
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#include <stdio.h>
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#include <sys/reboot.h>
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#include <termios.h>
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#endif
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#ifndef RB_SW_SUSPEND /* Since Linux 2.5.18, but not in GLIBC until 2.19 */
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#define RB_SW_SUSPEND 0xd000fce2
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#endif
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extern int debug; /* defined in finit or initctl */
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extern int ttrows;
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extern int ttcols;
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extern char *prognm;
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/* Define for printheader() from conio.h, used in initctl */
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#ifndef SCREEN_WIDTH
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#define SCREEN_WIDTH ttcols
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#endif
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#ifdef _LIBITE_LITE
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# include <libite/conio.h>
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# include <libite/lite.h>
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#else
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# include <lite/conio.h>
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# include <lite/lite.h>
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#endif
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char *progname (char *arg0);
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const char *basenm (const char *path);
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char *str (char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
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int fnread (char *buf, size_t len, char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
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int fnwrite (char *value, char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
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int fngetint (char *path, int *val);
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int suspend (void);
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int strtobytes (char *arg);
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char *sig2str (int sig);
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int str2sig (char *sig);
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char *code2str (int code);
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void do_sleep (unsigned int sec);
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void do_usleep (unsigned int usec);
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long jiffies (void);
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char *uptime (long secs, char *buf, size_t len);
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char *memsz (uint64_t sz, char *buf, size_t len);
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char *sanitize (char *arg, size_t len);
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void de_dotdot (char *file);
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int ismnt (char *file, char *dir, char *mode);
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int fismnt (char *dir);
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int fistmpfs (char *dir);
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#ifdef HAVE_TERMIOS_H
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int ttinit (void);
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int ttraw (void);
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int ttcooked (void);
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#else
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#define ttinit() ttcols
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#define ttraw() 0
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#define ttcooked() 0
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#endif
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static inline char *strterm(char *str, size_t len)
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{
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str[len - 1] = 0;
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return str;
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}
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/* paste dir/file into buf */
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static inline int paste(char *buf, size_t len, const char *dir, const char *file)
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{
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if (!dir)
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dir = "";
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if (!file)
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file = "";
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return snprintf(buf, len, "%s%s%s", dir,
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fisslashdir(dir) ? "" : file[0] == '/' ? "" : "/", file);
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}
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/* ensure path has suffix */
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static inline int suffix(char *path, size_t len, const char *sfx)
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{
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size_t slen = strlen(sfx);
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size_t plen = strlen(path);
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if (plen < slen)
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slen = strlcat(path, sfx, len);
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else {
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plen -= slen;
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if (strcmp(&path[plen], sfx))
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slen = strlcat(path, sfx, len);
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}
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if (slen >= len)
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return -1;
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return 0;
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}
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#endif /* FINIT_UTIL_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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