/*
 * Copyright (c) 2017-2018 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@dragonflybsd.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "hammer2.h"

static int pathdir(const char *path, const char **lastp);

int
cmd_destroy_path(int ac, const char **av)
{
        hammer2_ioc_destroy_t destroy;
        const char *last;
        int i;
        int fd;
        int ecode = 0;

        for (i = 0; i < ac; ++i) {
                bzero(&destroy, sizeof(destroy));
                destroy.cmd = HAMMER2_DELETE_FILE;
                printf("%s\t", av[i]);
                fflush(stdout);
                fd = pathdir(av[i], &last);
                if (fd >= 0) {
                        snprintf(destroy.path, sizeof(destroy.path),
                                 "%s", last);
                        if (ioctl(fd, HAMMER2IOC_DESTROY, &destroy) < 0) {
                                printf("%s\n", strerror(errno));
                                ecode = 1;
                        } else {
                                printf("ok\n");
                        }
                        close(fd);
                } else {
                        printf("%s\n", strerror(errno));
                        ecode = 1;
                }
        }
        return ecode;
}

static
int
pathdir(const char *path, const char **lastp)
{
        const char *ptr;
        char *npath;
        int fd;

        ptr = path + strlen(path);
        while (ptr > path && ptr[-1] != '/')
                --ptr;
        *lastp = ptr;
        if (ptr == path) {
                fd = open(".", O_RDONLY);
        } else {
                asprintf(&npath, "%*.*s",
                        (int)(ptr - path), (int)(ptr - path), path);
                fd = open(npath, O_RDONLY);
                free(npath);
        }

        return fd;
}

int
cmd_destroy_inum(const char *sel_path, int ac, const char **av)
{
        hammer2_ioc_destroy_t destroy;
        int i;
        int fd;
        int ecode = 0;

        fd = hammer2_ioctl_handle(sel_path);
        if (fd < 0)
                return 1;

        printf("deleting inodes on %s\n", sel_path);
        for (i = 0; i < ac; ++i) {
                bzero(&destroy, sizeof(destroy));
                destroy.cmd = HAMMER2_DELETE_INUM;
                destroy.inum = strtoul(av[i], NULL, 0);
                printf("%16jd ", (intmax_t)destroy.inum);
                if (ioctl(fd, HAMMER2IOC_DESTROY, &destroy) < 0) {
                        printf("%s\n", strerror(errno));
                        ecode = 1;
                } else {
                        printf("ok\n");
                }
        }
        close(fd);

        return ecode;
}