github.com/hugh712/snapd@v0.0.0-20200910133618-1a99902bd583/cmd/system-shutdown/system-shutdown-utils.h (about)

     1  /*
     2   * Copyright (C) 2016 Canonical Ltd
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License version 3 as
     6   * published by the Free Software Foundation.
     7   *
     8   * This program is distributed in the hope that it will be useful,
     9   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11   * GNU General Public License for more details.
    12   *
    13   * You should have received a copy of the GNU General Public License
    14   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15   *
    16   */
    17  
    18  #ifndef SYSTEM_SHUTDOWN_UTILS_H
    19  #define SYSTEM_SHUTDOWN_UTILS_H
    20  
    21  #include <stdbool.h>
    22  #include <stddef.h>		// size_t
    23  
    24  // tries to umount all (well, most) things. Returns whether in the last pass it
    25  // no longer found writable.
    26  bool umount_all(void);
    27  
    28  __attribute__((format(printf, 1, 2)))
    29  void kmsg(const char *fmt, ...);
    30  
    31  // Reads a possible argument for reboot syscall in /run/systemd/reboot-param,
    32  // which is the place where systemd stores it.
    33  int sc_read_reboot_arg(char *arg, size_t max_size);
    34  
    35  #endif