830 lines
19 KiB
C
830 lines
19 KiB
C
/*
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* wipefs - utility to wipe filesystems from device
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*
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* Copyright (C) 2009 Red Hat, Inc. All rights reserved.
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* Written by Karel Zak <kzak@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <string.h>
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#include <limits.h>
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#include <libgen.h>
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#include <blkid.h>
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#include <libsmartcols.h>
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#include "nls.h"
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#include "xalloc.h"
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#include "strutils.h"
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#include "all-io.h"
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#include "match.h"
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#include "c.h"
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#include "closestream.h"
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#include "optutils.h"
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#include "blkdev.h"
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struct wipe_desc {
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loff_t offset; /* magic string offset */
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size_t len; /* length of magic string */
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unsigned char *magic; /* magic string */
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char *usage; /* raid, filesystem, ... */
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char *type; /* FS type */
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char *label; /* FS label */
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char *uuid; /* FS uuid */
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struct wipe_desc *next;
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unsigned int on_disk : 1,
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is_parttable : 1;
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};
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struct wipe_control {
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char *devname;
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const char *type_pattern; /* -t <pattern> */
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struct libscols_table *outtab;
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struct wipe_desc *offsets; /* -o <offset> -o <offset> ... */
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size_t ndevs; /* number of devices to probe */
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char **reread; /* devices to BLKRRPART */
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size_t nrereads; /* size of reread */
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unsigned int noact : 1,
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all : 1,
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quiet : 1,
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backup : 1,
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force : 1,
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json : 1,
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no_headings : 1,
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parsable : 1;
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};
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/* column IDs */
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enum {
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COL_UUID = 0,
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COL_LABEL,
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COL_LEN,
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COL_TYPE,
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COL_OFFSET,
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COL_USAGE,
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COL_DEVICE
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};
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/* column names */
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struct colinfo {
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const char *name; /* header */
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double whint; /* width hint (N < 1 is in percent of termwidth) */
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int flags; /* SCOLS_FL_* */
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const char *help;
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};
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/* columns descriptions */
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static const struct colinfo infos[] = {
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[COL_UUID] = {"UUID", 4, 0, N_("partition/filesystem UUID")},
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[COL_LABEL] = {"LABEL", 5, 0, N_("filesystem LABEL")},
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[COL_LEN] = {"LENGTH", 6, 0, N_("magic string length")},
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[COL_TYPE] = {"TYPE", 4, 0, N_("superblok type")},
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[COL_OFFSET] = {"OFFSET", 5, 0, N_("magic string offset")},
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[COL_USAGE] = {"USAGE", 5, 0, N_("type description")},
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[COL_DEVICE] = {"DEVICE", 5, 0, N_("block device name")}
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};
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static int columns[ARRAY_SIZE(infos) * 2];
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static size_t ncolumns;
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static int column_name_to_id(const char *name, size_t namesz)
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{
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size_t i;
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assert(name);
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for (i = 0; i < ARRAY_SIZE(infos); i++) {
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const char *cn = infos[i].name;
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if (!strncasecmp(name, cn, namesz) && !*(cn + namesz))
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return i;
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}
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warnx(_("unknown column: %s"), name);
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return -1;
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}
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static int get_column_id(size_t num)
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{
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assert(num < ncolumns);
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assert(columns[num] < (int)ARRAY_SIZE(infos));
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return columns[num];
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}
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static const struct colinfo *get_column_info(int num)
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{
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return &infos[get_column_id(num)];
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}
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static void init_output(struct wipe_control *ctl)
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{
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struct libscols_table *tb;
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size_t i;
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scols_init_debug(0);
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tb = scols_new_table();
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if (!tb)
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err(EXIT_FAILURE, _("failed to allocate output table"));
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if (ctl->json) {
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scols_table_enable_json(tb, 1);
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scols_table_set_name(tb, "signatures");
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}
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scols_table_enable_noheadings(tb, ctl->no_headings);
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if (ctl->parsable) {
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scols_table_enable_raw(tb, 1);
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scols_table_set_column_separator(tb, ",");
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}
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for (i = 0; i < ncolumns; i++) {
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const struct colinfo *col = get_column_info(i);
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struct libscols_column *cl;
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cl = scols_table_new_column(tb, col->name, col->whint,
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col->flags);
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if (!cl)
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err(EXIT_FAILURE,
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_("failed to initialize output column"));
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if (ctl->json) {
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int id = get_column_id(i);
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if (id == COL_LEN)
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scols_column_set_json_type(cl, SCOLS_JSON_NUMBER);
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}
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}
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ctl->outtab = tb;
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}
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static void finalize_output(struct wipe_control *ctl)
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{
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if (ctl->parsable && !ctl->no_headings
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&& !scols_table_is_empty(ctl->outtab)) {
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struct libscols_iter *itr = scols_new_iter(SCOLS_ITER_FORWARD);
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struct libscols_column *cl;
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int i = 0;
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if (!itr)
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err_oom();
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fputs("# ", stdout);
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while (scols_table_next_column(ctl->outtab, itr, &cl) == 0) {
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struct libscols_cell *hdr = scols_column_get_header(cl);
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const char *name = scols_cell_get_data(hdr);
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if (i)
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fputc(',', stdout);
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fputs(name, stdout);
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i++;
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}
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fputc('\n', stdout);
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scols_free_iter(itr);
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}
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scols_print_table(ctl->outtab);
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scols_unref_table(ctl->outtab);
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}
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static void fill_table_row(struct wipe_control *ctl, struct wipe_desc *wp)
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{
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static struct libscols_line *ln;
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size_t i;
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ln = scols_table_new_line(ctl->outtab, NULL);
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if (!ln)
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errx(EXIT_FAILURE, _("failed to allocate output line"));
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for (i = 0; i < ncolumns; i++) {
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char *str = NULL;
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switch (get_column_id(i)) {
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case COL_UUID:
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if (wp->uuid)
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str = xstrdup(wp->uuid);
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break;
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case COL_LABEL:
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if (wp->label)
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str = xstrdup(wp->label);
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break;
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case COL_OFFSET:
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xasprintf(&str, "0x%jx", (intmax_t)wp->offset);
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break;
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case COL_LEN:
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xasprintf(&str, "%zu", wp->len);
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break;
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case COL_USAGE:
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if (wp->usage)
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str = xstrdup(wp->usage);
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break;
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case COL_TYPE:
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if (wp->type)
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str = xstrdup(wp->type);
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break;
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case COL_DEVICE:
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if (ctl->devname) {
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char *dev = xstrdup(ctl->devname);
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str = xstrdup(basename(dev));
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free(dev);
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}
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break;
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default:
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abort();
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}
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if (str && scols_line_refer_data(ln, i, str))
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errx(EXIT_FAILURE, _("failed to add output data"));
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}
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}
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static void add_to_output(struct wipe_control *ctl, struct wipe_desc *wp)
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{
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for (/*nothing*/; wp; wp = wp->next)
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fill_table_row(ctl, wp);
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}
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/* Allocates a new wipe_desc and add to the wp0 if not NULL */
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static struct wipe_desc *add_offset(struct wipe_desc **wp0, loff_t offset)
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{
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struct wipe_desc *wp, *last = NULL;
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if (wp0) {
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/* check if already exists */
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for (wp = *wp0; wp; wp = wp->next) {
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if (wp->offset == offset)
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return wp;
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last = wp;
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}
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}
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wp = xcalloc(1, sizeof(struct wipe_desc));
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wp->offset = offset;
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wp->next = NULL;
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if (last)
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last->next = wp;
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if (wp0 && !*wp0)
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*wp0 = wp;
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return wp;
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}
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/* Read data from libblkid and if detected type pass -t and -o filters than:
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* - allocates a new wipe_desc
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* - add the new wipe_desc to wp0 list (if not NULL)
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*
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* The function always returns offset and len if libblkid detected something.
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*/
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static struct wipe_desc *get_desc_for_probe(struct wipe_control *ctl,
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struct wipe_desc **wp0,
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blkid_probe pr,
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loff_t *offset,
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size_t *len)
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{
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const char *off, *type, *mag, *p, *use = NULL;
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struct wipe_desc *wp;
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int rc, ispt = 0;
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*len = 0;
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/* superblocks */
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if (blkid_probe_lookup_value(pr, "TYPE", &type, NULL) == 0) {
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rc = blkid_probe_lookup_value(pr, "SBMAGIC_OFFSET", &off, NULL);
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if (!rc)
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rc = blkid_probe_lookup_value(pr, "SBMAGIC", &mag, len);
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if (rc)
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return NULL;
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/* partitions */
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} else if (blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL) == 0) {
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rc = blkid_probe_lookup_value(pr, "PTMAGIC_OFFSET", &off, NULL);
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if (!rc)
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rc = blkid_probe_lookup_value(pr, "PTMAGIC", &mag, len);
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if (rc)
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return NULL;
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use = N_("partition-table");
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ispt = 1;
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} else
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return NULL;
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*offset = strtoll(off, NULL, 10);
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/* Filter out by -t <type> */
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if (ctl->type_pattern && !match_fstype(type, ctl->type_pattern))
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return NULL;
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/* Filter out by -o <offset> */
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if (ctl->offsets) {
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struct wipe_desc *w = NULL;
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for (w = ctl->offsets; w; w = w->next) {
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if (w->offset == *offset)
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break;
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}
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if (!w)
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return NULL;
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w->on_disk = 1; /* mark as "found" */
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}
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wp = add_offset(wp0, *offset);
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if (!wp)
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return NULL;
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if (use || blkid_probe_lookup_value(pr, "USAGE", &use, NULL) == 0)
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wp->usage = xstrdup(use);
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wp->type = xstrdup(type);
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wp->on_disk = 1;
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wp->is_parttable = ispt ? 1 : 0;
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wp->magic = xmalloc(*len);
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memcpy(wp->magic, mag, *len);
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wp->len = *len;
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if (blkid_probe_lookup_value(pr, "LABEL", &p, NULL) == 0)
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wp->label = xstrdup(p);
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if (blkid_probe_lookup_value(pr, "UUID", &p, NULL) == 0)
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wp->uuid = xstrdup(p);
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return wp;
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}
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static blkid_probe
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new_probe(const char *devname, int mode)
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{
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blkid_probe pr = NULL;
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if (!devname)
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return NULL;
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if (mode) {
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int fd = open(devname, mode);
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if (fd < 0)
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goto error;
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pr = blkid_new_probe();
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if (!pr || blkid_probe_set_device(pr, fd, 0, 0) != 0) {
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close(fd);
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goto error;
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}
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} else
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pr = blkid_new_probe_from_filename(devname);
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if (!pr)
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goto error;
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blkid_probe_enable_superblocks(pr, 1);
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blkid_probe_set_superblocks_flags(pr,
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BLKID_SUBLKS_MAGIC | /* return magic string and offset */
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BLKID_SUBLKS_TYPE | /* return superblock type */
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BLKID_SUBLKS_USAGE | /* return USAGE= */
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BLKID_SUBLKS_LABEL | /* return LABEL= */
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BLKID_SUBLKS_UUID | /* return UUID= */
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BLKID_SUBLKS_BADCSUM); /* accept bad checksums */
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blkid_probe_enable_partitions(pr, 1);
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blkid_probe_set_partitions_flags(pr, BLKID_PARTS_MAGIC |
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BLKID_PARTS_FORCE_GPT);
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return pr;
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error:
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blkid_free_probe(pr);
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err(EXIT_FAILURE, _("error: %s: probing initialization failed"), devname);
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}
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static struct wipe_desc *read_offsets(struct wipe_control *ctl)
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{
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blkid_probe pr = new_probe(ctl->devname, 0);
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struct wipe_desc *wp0 = NULL;
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if (!pr)
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return NULL;
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while (blkid_do_probe(pr) == 0) {
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size_t len = 0;
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loff_t offset = 0;
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/* add a new offset to wp0 */
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get_desc_for_probe(ctl, &wp0, pr, &offset, &len);
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/* hide last detected signature and scan again */
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if (len) {
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blkid_probe_hide_range(pr, offset, len);
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blkid_probe_step_back(pr);
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}
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}
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blkid_free_probe(pr);
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return wp0;
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}
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static void free_wipe(struct wipe_desc *wp)
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{
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while (wp) {
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struct wipe_desc *next = wp->next;
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free(wp->usage);
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free(wp->type);
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free(wp->magic);
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free(wp->label);
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free(wp->uuid);
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free(wp);
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wp = next;
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}
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}
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static void do_wipe_real(struct wipe_control *ctl, blkid_probe pr,
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struct wipe_desc *w)
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{
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size_t i;
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if (blkid_do_wipe(pr, ctl->noact) != 0)
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err(EXIT_FAILURE, _("%s: failed to erase %s magic string at offset 0x%08jx"),
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ctl->devname, w->type, (intmax_t)w->offset);
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if (ctl->quiet)
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return;
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printf(P_("%s: %zd byte was erased at offset 0x%08jx (%s): ",
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"%s: %zd bytes were erased at offset 0x%08jx (%s): ",
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w->len),
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ctl->devname, w->len, (intmax_t)w->offset, w->type);
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for (i = 0; i < w->len; i++) {
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printf("%02x", w->magic[i]);
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if (i + 1 < w->len)
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fputc(' ', stdout);
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}
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putchar('\n');
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}
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static void do_backup(struct wipe_desc *wp, const char *base)
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{
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char *fname = NULL;
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int fd;
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xasprintf(&fname, "%s0x%08jx.bak", base, (intmax_t)wp->offset);
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fd = open(fname, O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
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if (fd < 0)
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goto err;
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if (write_all(fd, wp->magic, wp->len) != 0)
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goto err;
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close(fd);
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free(fname);
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return;
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err:
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err(EXIT_FAILURE, _("%s: failed to create a signature backup"), fname);
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}
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#ifdef BLKRRPART
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static void rereadpt(int fd, const char *devname)
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{
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struct stat st;
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int try = 0;
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if (fstat(fd, &st) || !S_ISBLK(st.st_mode))
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return;
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do {
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/*
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* Unfortunately, it's pretty common that the first re-read
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* without delay is uncuccesful. The reason is probably kernel
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* and/or udevd. Let's wait a moment and try more attempts.
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*/
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xusleep(25000);
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errno = 0;
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ioctl(fd, BLKRRPART);
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if (errno != EBUSY)
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break;
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} while (try++ < 4);
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printf(_("%s: calling ioctl to re-read partition table: %m\n"), devname);
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}
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#endif
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static int do_wipe(struct wipe_control *ctl)
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{
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int mode = O_RDWR, reread = 0, need_force = 0;
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blkid_probe pr;
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char *backup = NULL;
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|
struct wipe_desc *w;
|
|
|
|
if (!ctl->force)
|
|
mode |= O_EXCL;
|
|
|
|
pr = new_probe(ctl->devname, mode);
|
|
if (!pr)
|
|
return -errno;
|
|
|
|
if (ctl->backup) {
|
|
const char *home = getenv ("HOME");
|
|
char *tmp = xstrdup(ctl->devname);
|
|
|
|
if (!home)
|
|
errx(EXIT_FAILURE, _("failed to create a signature backup, $HOME undefined"));
|
|
xasprintf (&backup, "%s/wipefs-%s-", home, basename(tmp));
|
|
free(tmp);
|
|
}
|
|
|
|
while (blkid_do_probe(pr) == 0) {
|
|
int wiped = 0;
|
|
size_t len = 0;
|
|
loff_t offset = 0;
|
|
struct wipe_desc *wp;
|
|
|
|
wp = get_desc_for_probe(ctl, NULL, pr, &offset, &len);
|
|
if (!wp)
|
|
goto done;
|
|
|
|
if (!ctl->force
|
|
&& wp->is_parttable
|
|
&& !blkid_probe_is_wholedisk(pr)) {
|
|
warnx(_("%s: ignoring nested \"%s\" partition table "
|
|
"on non-whole disk device"), ctl->devname, wp->type);
|
|
need_force = 1;
|
|
goto done;
|
|
}
|
|
|
|
if (backup)
|
|
do_backup(wp, backup);
|
|
do_wipe_real(ctl, pr, wp);
|
|
if (wp->is_parttable)
|
|
reread = 1;
|
|
wiped = 1;
|
|
done:
|
|
if (!wiped && len) {
|
|
/* if the offset has not been wiped (probably because
|
|
* filtered out by -t or -o) we need to hide it for
|
|
* libblkid to try another magic string for the same
|
|
* superblock, otherwise libblkid will continue with
|
|
* another superblock. Don't forget that the same
|
|
* superblock could be detected by more magic strings
|
|
* */
|
|
blkid_probe_hide_range(pr, offset, len);
|
|
blkid_probe_step_back(pr);
|
|
}
|
|
free_wipe(wp);
|
|
}
|
|
|
|
for (w = ctl->offsets; w; w = w->next) {
|
|
if (!w->on_disk && !ctl->quiet)
|
|
warnx(_("%s: offset 0x%jx not found"),
|
|
ctl->devname, (uintmax_t)w->offset);
|
|
}
|
|
|
|
if (need_force)
|
|
warnx(_("Use the --force option to force erase."));
|
|
|
|
fsync(blkid_probe_get_fd(pr));
|
|
|
|
#ifdef BLKRRPART
|
|
if (reread && (mode & O_EXCL)) {
|
|
if (ctl->ndevs > 1) {
|
|
/*
|
|
* We're going to probe more device, let's postpone
|
|
* re-read PT ioctl until all is erased to avoid
|
|
* situation we erase PT on /dev/sda before /dev/sdaN
|
|
* devices are processed.
|
|
*/
|
|
if (!ctl->reread)
|
|
ctl->reread = xcalloc(ctl->ndevs, sizeof(char *));
|
|
|
|
ctl->reread[ctl->nrereads++] = ctl->devname;
|
|
} else
|
|
rereadpt(blkid_probe_get_fd(pr), ctl->devname);
|
|
}
|
|
#endif
|
|
|
|
close(blkid_probe_get_fd(pr));
|
|
blkid_free_probe(pr);
|
|
free(backup);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void __attribute__((__noreturn__))
|
|
usage(void)
|
|
{
|
|
size_t i;
|
|
|
|
fputs(USAGE_HEADER, stdout);
|
|
printf(_(" %s [options] <device>\n"), program_invocation_short_name);
|
|
|
|
fputs(USAGE_SEPARATOR, stdout);
|
|
puts(_("Wipe signatures from a device."));
|
|
|
|
fputs(USAGE_OPTIONS, stdout);
|
|
puts(_(" -a, --all wipe all magic strings (BE CAREFUL!)"));
|
|
puts(_(" -b, --backup create a signature backup in $HOME"));
|
|
puts(_(" -f, --force force erasure"));
|
|
puts(_(" -i, --noheadings don't print headings"));
|
|
puts(_(" -J, --json use JSON output format"));
|
|
puts(_(" -n, --no-act do everything except the actual write() call"));
|
|
puts(_(" -o, --offset <num> offset to erase, in bytes"));
|
|
puts(_(" -O, --output <list> COLUMNS to display (see below)"));
|
|
puts(_(" -p, --parsable print out in parsable instead of printable format"));
|
|
puts(_(" -q, --quiet suppress output messages"));
|
|
puts(_(" -t, --types <list> limit the set of filesystem, RAIDs or partition tables"));
|
|
|
|
printf(USAGE_HELP_OPTIONS(21));
|
|
|
|
fputs(USAGE_COLUMNS, stdout);
|
|
for (i = 0; i < ARRAY_SIZE(infos); i++)
|
|
fprintf(stdout, " %8s %s\n", infos[i].name, _(infos[i].help));
|
|
|
|
printf(USAGE_MAN_TAIL("wipefs(8)"));
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct wipe_control ctl = { .devname = NULL };
|
|
int c;
|
|
char *outarg = NULL;
|
|
|
|
static const struct option longopts[] = {
|
|
{ "all", no_argument, NULL, 'a' },
|
|
{ "backup", no_argument, NULL, 'b' },
|
|
{ "force", no_argument, NULL, 'f' },
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "no-act", no_argument, NULL, 'n' },
|
|
{ "offset", required_argument, NULL, 'o' },
|
|
{ "parsable", no_argument, NULL, 'p' },
|
|
{ "quiet", no_argument, NULL, 'q' },
|
|
{ "types", required_argument, NULL, 't' },
|
|
{ "version", no_argument, NULL, 'V' },
|
|
{ "json", no_argument, NULL, 'J'},
|
|
{ "noheadings",no_argument, NULL, 'i'},
|
|
{ "output", required_argument, NULL, 'O'},
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
|
|
{ 'O','a','o' },
|
|
{ 0 }
|
|
};
|
|
int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
|
|
|
|
setlocale(LC_ALL, "");
|
|
bindtextdomain(PACKAGE, LOCALEDIR);
|
|
textdomain(PACKAGE);
|
|
close_stdout_atexit();
|
|
|
|
while ((c = getopt_long(argc, argv, "abfhiJnO:o:pqt:V", longopts, NULL)) != -1) {
|
|
|
|
err_exclusive_options(c, longopts, excl, excl_st);
|
|
|
|
switch(c) {
|
|
case 'a':
|
|
ctl.all = 1;
|
|
break;
|
|
case 'b':
|
|
ctl.backup = 1;
|
|
break;
|
|
case 'f':
|
|
ctl.force = 1;
|
|
break;
|
|
case 'J':
|
|
ctl.json = 1;
|
|
break;
|
|
case 'i':
|
|
ctl.no_headings = 1;
|
|
break;
|
|
case 'O':
|
|
outarg = optarg;
|
|
break;
|
|
case 'n':
|
|
ctl.noact = 1;
|
|
break;
|
|
case 'o':
|
|
add_offset(&ctl.offsets, strtosize_or_err(optarg,
|
|
_("invalid offset argument")));
|
|
break;
|
|
case 'p':
|
|
ctl.parsable = 1;
|
|
ctl.no_headings = 1;
|
|
break;
|
|
case 'q':
|
|
ctl.quiet = 1;
|
|
break;
|
|
case 't':
|
|
ctl.type_pattern = optarg;
|
|
break;
|
|
|
|
case 'h':
|
|
usage();
|
|
case 'V':
|
|
print_version(EXIT_SUCCESS);
|
|
default:
|
|
errtryhelp(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
if (optind == argc) {
|
|
warnx(_("no device specified"));
|
|
errtryhelp(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
if (ctl.backup && !(ctl.all || ctl.offsets))
|
|
warnx(_("The --backup option is meaningless in this context"));
|
|
|
|
if (!ctl.all && !ctl.offsets) {
|
|
/*
|
|
* Print only
|
|
*/
|
|
if (ctl.parsable) {
|
|
/* keep it backward compatible */
|
|
columns[ncolumns++] = COL_OFFSET;
|
|
columns[ncolumns++] = COL_UUID;
|
|
columns[ncolumns++] = COL_LABEL;
|
|
columns[ncolumns++] = COL_TYPE;
|
|
} else {
|
|
/* default, may be modified by -O <list> */
|
|
columns[ncolumns++] = COL_DEVICE;
|
|
columns[ncolumns++] = COL_OFFSET;
|
|
columns[ncolumns++] = COL_TYPE;
|
|
columns[ncolumns++] = COL_UUID;
|
|
columns[ncolumns++] = COL_LABEL;
|
|
}
|
|
|
|
if (outarg
|
|
&& string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns),
|
|
&ncolumns, column_name_to_id) < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
init_output(&ctl);
|
|
|
|
while (optind < argc) {
|
|
struct wipe_desc *wp;
|
|
|
|
ctl.devname = argv[optind++];
|
|
wp = read_offsets(&ctl);
|
|
if (wp)
|
|
add_to_output(&ctl, wp);
|
|
free_wipe(wp);
|
|
}
|
|
finalize_output(&ctl);
|
|
} else {
|
|
/*
|
|
* Erase
|
|
*/
|
|
ctl.ndevs = argc - optind;
|
|
|
|
while (optind < argc) {
|
|
ctl.devname = argv[optind++];
|
|
do_wipe(&ctl);
|
|
ctl.ndevs--;
|
|
}
|
|
|
|
#ifdef BLKRRPART
|
|
/* Re-read partition tables on whole-disk devices. This is
|
|
* postponed until all is done to avoid conflicts.
|
|
*/
|
|
for (size_t i = 0; i < ctl.nrereads; i++) {
|
|
char *devname = ctl.reread[i];
|
|
int fd = open(devname, O_RDONLY);
|
|
|
|
if (fd >= 0) {
|
|
rereadpt(fd, devname);
|
|
close(fd);
|
|
}
|
|
}
|
|
free(ctl.reread);
|
|
#endif
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|