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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
commit378c18e5f024ac5a8aef4cb40d7c9aa9633d144c (patch)
tree44dfb6ca500d32cabd450649b322a42e70a30683 /disk-utils/fdisk.c
parentInitial commit. (diff)
downloadutil-linux-upstream.tar.xz
util-linux-upstream.zip
Adding upstream version 2.38.1.upstream/2.38.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'disk-utils/fdisk.c')
-rw-r--r--disk-utils/fdisk.c1184
1 files changed, 1184 insertions, 0 deletions
diff --git a/disk-utils/fdisk.c b/disk-utils/fdisk.c
new file mode 100644
index 0000000..2bd2ef4
--- /dev/null
+++ b/disk-utils/fdisk.c
@@ -0,0 +1,1184 @@
+/*
+ * Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
+ * Copyright (C) 2012 Davidlohr Bueso <dave@gnu.org>
+ *
+ * Copyright (C) 2007-2013 Karel Zak <kzak@redhat.com>
+ *
+ * This program is free software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation: either version 1 or
+ * (at your option) any later version.
+ */
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <time.h>
+#include <limits.h>
+#include <signal.h>
+#include <poll.h>
+#include <libsmartcols.h>
+#ifdef HAVE_LIBREADLINE
+# define _FUNCTION_DEF
+# include <readline/readline.h>
+#endif
+
+#include "c.h"
+#include "xalloc.h"
+#include "all-io.h"
+#include "nls.h"
+#include "rpmatch.h"
+#include "blkdev.h"
+#include "mbsalign.h"
+#include "pathnames.h"
+#include "canonicalize.h"
+#include "strutils.h"
+#include "closestream.h"
+#include "pager.h"
+
+#include "fdisk.h"
+
+#include "pt-sun.h" /* to toggle flags */
+
+#ifdef HAVE_LINUX_COMPILER_H
+# include <linux/compiler.h>
+#endif
+#ifdef HAVE_LINUX_BLKPG_H
+# include <linux/blkpg.h>
+#endif
+
+int pwipemode = WIPEMODE_AUTO;
+int device_is_used;
+int is_interactive;
+struct fdisk_table *original_layout;
+
+static int wipemode = WIPEMODE_AUTO;
+
+/*
+ * fdisk debug stuff (see fdisk.h and include/debug.h)
+ */
+UL_DEBUG_DEFINE_MASK(fdisk);
+UL_DEBUG_DEFINE_MASKNAMES(fdisk) = UL_DEBUG_EMPTY_MASKNAMES;
+
+static void fdiskprog_init_debug(void)
+{
+ __UL_INIT_DEBUG_FROM_ENV(fdisk, FDISKPROG_DEBUG_, 0, FDISK_DEBUG);
+}
+
+static void reply_sighandler(int sig __attribute__((unused)))
+{
+ DBG(ASK, ul_debug("got signal"));
+}
+
+static int reply_running;
+
+#ifdef HAVE_LIBREADLINE
+static char *reply_line;
+
+static void reply_linehandler(char *line)
+{
+ reply_line = line;
+ reply_running = 0;
+ rl_callback_handler_remove(); /* avoid duplicate prompt */
+}
+#endif
+
+int get_user_reply(const char *prompt, char *buf, size_t bufsz)
+{
+ struct sigaction oldact, act = {
+ .sa_handler = reply_sighandler
+ };
+ struct pollfd fds[] = {
+ { .fd = fileno(stdin), .events = POLLIN }
+ };
+ size_t sz;
+ int ret = 0;
+
+ DBG(ASK, ul_debug("asking for user reply %s", is_interactive ? "[interactive]" : ""));
+
+ sigemptyset(&act.sa_mask);
+ sigaction(SIGINT, &act, &oldact);
+
+#ifdef HAVE_LIBREADLINE
+ if (is_interactive)
+ rl_callback_handler_install(prompt, reply_linehandler);
+#endif
+ errno = 0;
+ reply_running = 1;
+ do {
+ int rc;
+
+ *buf = '\0';
+#ifdef HAVE_LIBREADLINE
+ if (!is_interactive)
+#endif
+ {
+ fputs(prompt, stdout);
+ fflush(stdout);
+ }
+
+ rc = poll(fds, 1, -1);
+ if (rc == -1 && errno == EINTR) { /* interrupted by signal */
+ DBG(ASK, ul_debug("cancel by CTRL+C"));
+ ret = -ECANCELED;
+ goto done;
+ }
+ if (rc == -1 && errno != EAGAIN) { /* error */
+ ret = -errno;
+ goto done;
+ }
+#ifdef HAVE_LIBREADLINE
+ if (is_interactive) {
+ /* read input and copy to buf[] */
+ rl_callback_read_char();
+ if (!reply_running && reply_line) {
+ sz = strlen(reply_line);
+ if (sz == 0)
+ buf[sz++] = '\n';
+ else
+ memcpy(buf, reply_line, min(sz, bufsz));
+ buf[min(sz, bufsz - 1)] = '\0';
+ free(reply_line);
+ reply_line = NULL;
+ }
+ } else
+#endif
+ {
+ if (!fgets(buf, bufsz, stdin))
+ *buf = '\0';
+ break;
+ }
+ } while (reply_running);
+
+ if (!*buf) {
+ DBG(ASK, ul_debug("cancel by CTRL+D"));
+ ret = -ECANCELED;
+ clearerr(stdin);
+ goto done;
+ }
+
+ /*
+ * cleanup the reply
+ */
+ sz = ltrim_whitespace((unsigned char *) buf);
+ if (sz && *(buf + sz - 1) == '\n')
+ *(buf + sz - 1) = '\0';
+
+done:
+#ifdef HAVE_LIBREADLINE
+ if (is_interactive)
+ rl_callback_handler_remove();
+#endif
+ sigaction(SIGINT, &oldact, NULL);
+ DBG(ASK, ul_debug("user's reply: >>>%s<<< [rc=%d]", buf, ret));
+ return ret;
+}
+
+static int ask_menu(struct fdisk_context *cxt, struct fdisk_ask *ask,
+ char *buf, size_t bufsz)
+
+{
+ const char *q = fdisk_ask_get_query(ask);
+ int dft = fdisk_ask_menu_get_default(ask);
+
+ if (q) {
+ fputs(q, stdout); /* print header */
+ fputc('\n', stdout);
+ }
+
+ do {
+ char prompt[128];
+ int key, c, rc;
+ const char *name, *desc;
+ size_t i = 0;
+
+ /* print menu items */
+ while (fdisk_ask_menu_get_item(ask, i++, &key, &name, &desc) == 0)
+ fprintf(stdout, " %c %s (%s)\n", key, name, desc);
+
+ /* ask for key */
+ snprintf(prompt, sizeof(prompt), _("Select (default %c): "), dft);
+ rc = get_user_reply(prompt, buf, bufsz);
+ if (rc)
+ return rc;
+ if (!*buf) {
+ fdisk_info(cxt, _("Using default response %c."), dft);
+ c = dft;
+ } else
+ c = tolower(buf[0]);
+
+ /* check result */
+ i = 0;
+ while (fdisk_ask_menu_get_item(ask, i++, &key, NULL, NULL) == 0) {
+ if (c == key) {
+ fdisk_ask_menu_set_result(ask, c);
+ return 0; /* success */
+ }
+ }
+ fdisk_warnx(cxt, _("Value out of range."));
+ } while (1);
+
+ return -EINVAL;
+}
+
+
+#define tochar(num) ((int) ('a' + num - 1))
+static int ask_number(struct fdisk_context *cxt,
+ struct fdisk_ask *ask,
+ char *buf, size_t bufsz)
+{
+ char prompt[128] = { '\0' };
+ const char *q = fdisk_ask_get_query(ask);
+ const char *range = fdisk_ask_number_get_range(ask);
+
+ uint64_t dflt = fdisk_ask_number_get_default(ask),
+ low = fdisk_ask_number_get_low(ask),
+ high = fdisk_ask_number_get_high(ask);
+ int inchar = fdisk_ask_number_inchars(ask);
+
+ assert(q);
+
+ DBG(ASK, ul_debug("asking for number "
+ "['%s', <%"PRIu64",%"PRIu64">, default=%"PRIu64", range: %s]",
+ q, low, high, dflt, range));
+
+ if (range && dflt >= low && dflt <= high) {
+ if (inchar)
+ snprintf(prompt, sizeof(prompt), _("%s (%s, default %c): "),
+ q, range, tochar(dflt));
+ else
+ snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
+ q, range, dflt);
+
+ } else if (dflt >= low && dflt <= high) {
+ if (inchar)
+ snprintf(prompt, sizeof(prompt), _("%s (%c-%c, default %c): "),
+ q, tochar(low), tochar(high), tochar(dflt));
+ else
+ snprintf(prompt, sizeof(prompt),
+ _("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
+ q, low, high, dflt);
+ } else if (inchar)
+ snprintf(prompt, sizeof(prompt), _("%s (%c-%c): "),
+ q, tochar(low), tochar(high));
+ else
+ snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
+ q, low, high);
+
+ do {
+ int rc = get_user_reply(prompt, buf, bufsz);
+ uint64_t num = 0;
+
+ if (rc)
+ return rc;
+ if (!*buf && dflt >= low && dflt <= high)
+ return fdisk_ask_number_set_result(ask, dflt);
+
+ if (isdigit_string(buf)) {
+ char *end;
+
+ errno = 0;
+ num = strtoumax(buf, &end, 10);
+ if (errno || buf == end || (end && *end))
+ continue;
+ } else if (inchar && isalpha(*buf)) {
+ num = tolower(*buf) - 'a' + 1;
+ } else
+ rc = -EINVAL;
+
+ if (rc == 0 && num >= low && num <= high)
+ return fdisk_ask_number_set_result(ask, num);
+
+ fdisk_warnx(cxt, _("Value out of range."));
+ } while (1);
+
+ return -1;
+}
+
+static int ask_offset(struct fdisk_context *cxt,
+ struct fdisk_ask *ask,
+ char *buf, size_t bufsz)
+{
+ char prompt[128] = { '\0' };
+ const char *q = fdisk_ask_get_query(ask);
+ const char *range = fdisk_ask_number_get_range(ask);
+
+ uint64_t dflt = fdisk_ask_number_get_default(ask),
+ low = fdisk_ask_number_get_low(ask),
+ high = fdisk_ask_number_get_high(ask),
+ base = fdisk_ask_number_get_base(ask);
+
+ assert(q);
+
+ DBG(ASK, ul_debug("asking for offset ['%s', <%"PRIu64",%"PRIu64">, base=%"PRIu64", default=%"PRIu64", range: %s]",
+ q, low, high, base, dflt, range));
+
+ if (range && dflt >= low && dflt <= high)
+ snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
+ q, range, dflt);
+ else if (dflt >= low && dflt <= high)
+ snprintf(prompt, sizeof(prompt),
+ _("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
+ q, low, high, dflt);
+ else
+ snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
+ q, low, high);
+
+ do {
+ uintmax_t num = 0;
+ char sig = 0, *p;
+ int pwr = 0;
+
+ int rc = get_user_reply(prompt, buf, bufsz);
+ if (rc)
+ return rc;
+ if (!*buf && dflt >= low && dflt <= high)
+ return fdisk_ask_number_set_result(ask, dflt);
+
+ p = buf;
+ if (*p == '+' || *p == '-') {
+ sig = *buf;
+ p++;
+ }
+
+ rc = parse_size(p, &num, &pwr);
+ if (rc)
+ continue;
+ DBG(ASK, ul_debug("parsed size: %ju", num));
+ if (sig && pwr) {
+ /* +{size}{K,M,...} specified, the "num" is in bytes */
+ uint64_t unit = fdisk_ask_number_get_unit(ask);
+ num += unit/2; /* round */
+ num /= unit;
+ }
+ if (sig == '+')
+ num += base;
+ else if (sig == '-' && fdisk_ask_number_is_wrap_negative(ask))
+ num = high - num;
+ else if (sig == '-')
+ num = base - num;
+
+ DBG(ASK, ul_debug("final offset: %ju [sig: %c, power: %d, %s]",
+ num, sig, pwr,
+ sig ? "relative" : "absolute"));
+ if (num >= low && num <= high) {
+ if (sig && pwr)
+ fdisk_ask_number_set_relative(ask, 1);
+ return fdisk_ask_number_set_result(ask, (uint64_t)num);
+ }
+ fdisk_warnx(cxt, _("Value out of range."));
+ } while (1);
+
+ return -1;
+}
+
+static unsigned int info_count;
+
+static void fputs_info(struct fdisk_ask *ask, FILE *out)
+{
+ const char *msg;
+ assert(ask);
+
+ msg = fdisk_ask_print_get_mesg(ask);
+ if (!msg)
+ return;
+ if (info_count == 1)
+ fputc('\n', out);
+
+ fputs(msg, out);
+ fputc('\n', out);
+}
+
+int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
+ void *data __attribute__((__unused__)))
+{
+ int rc = 0;
+ char buf[BUFSIZ] = { '\0' };
+
+ assert(cxt);
+ assert(ask);
+
+ if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_INFO)
+ info_count = 0;
+
+ switch(fdisk_ask_get_type(ask)) {
+ case FDISK_ASKTYPE_MENU:
+ return ask_menu(cxt, ask, buf, sizeof(buf));
+ case FDISK_ASKTYPE_NUMBER:
+ return ask_number(cxt, ask, buf, sizeof(buf));
+ case FDISK_ASKTYPE_OFFSET:
+ return ask_offset(cxt, ask, buf, sizeof(buf));
+ case FDISK_ASKTYPE_INFO:
+ if (!fdisk_is_listonly(cxt))
+ info_count++;
+ fputs_info(ask, stdout);
+ break;
+ case FDISK_ASKTYPE_WARNX:
+ fflush(stdout);
+ color_scheme_fenable("warn", UL_COLOR_RED, stderr);
+ fputs(fdisk_ask_print_get_mesg(ask), stderr);
+ color_fdisable(stderr);
+ fputc('\n', stderr);
+ break;
+ case FDISK_ASKTYPE_WARN:
+ fflush(stdout);
+ color_scheme_fenable("warn", UL_COLOR_RED, stderr);
+ fputs(fdisk_ask_print_get_mesg(ask), stderr);
+ errno = fdisk_ask_print_get_errno(ask);
+ fprintf(stderr, ": %m\n");
+ color_fdisable(stderr);
+ break;
+ case FDISK_ASKTYPE_YESNO:
+ fputc('\n', stdout);
+ do {
+ int x;
+ fputs(fdisk_ask_get_query(ask), stdout);
+ rc = get_user_reply(_(" [Y]es/[N]o: "), buf, sizeof(buf));
+ if (rc)
+ break;
+ x = rpmatch(buf);
+ if (x == RPMATCH_YES || x == RPMATCH_NO) {
+ fdisk_ask_yesno_set_result(ask, x);
+ break;
+ }
+ } while(1);
+ DBG(ASK, ul_debug("yes-no ask: reply '%s' [rc=%d]", buf, rc));
+ break;
+ case FDISK_ASKTYPE_STRING:
+ {
+ char prmt[BUFSIZ];
+ snprintf(prmt, sizeof(prmt), "%s: ", fdisk_ask_get_query(ask));
+ fputc('\n', stdout);
+ rc = get_user_reply(prmt, buf, sizeof(buf));
+ if (rc == 0)
+ fdisk_ask_string_set_result(ask, xstrdup(buf));
+ DBG(ASK, ul_debug("string ask: reply '%s' [rc=%d]", buf, rc));
+ break;
+ }
+ default:
+ warnx(_("internal error: unsupported dialog type %d"), fdisk_ask_get_type(ask));
+ return -EINVAL;
+ }
+ return rc;
+}
+
+static struct fdisk_parttype *ask_partition_type(struct fdisk_context *cxt, int *canceled)
+{
+ const char *q;
+ struct fdisk_label *lb;
+
+ assert(cxt);
+ lb = fdisk_get_label(cxt, NULL);
+
+ if (!lb)
+ return NULL;
+
+ *canceled = 0;
+
+ if (fdisk_label_has_parttypes_shortcuts(lb))
+ q = fdisk_label_has_code_parttypes(lb) ?
+ _("Hex code or alias (type L to list all): ") :
+ _("Partition type or alias (type L to list all): ");
+ else
+ q = fdisk_label_has_code_parttypes(lb) ?
+ _("Hex code (type L to list all codes): ") :
+ _("Partition type (type L to list all types): ");
+ do {
+ char buf[256] = { '\0' };
+ int rc = get_user_reply(q, buf, sizeof(buf));
+
+ if (rc) {
+ if (rc == -ECANCELED)
+ *canceled = 1;
+ break;
+ }
+
+ if (buf[1] == '\0' && toupper(*buf) == 'L')
+ list_partition_types(cxt);
+ else if (*buf) {
+ struct fdisk_parttype *t = fdisk_label_advparse_parttype(lb, buf,
+ FDISK_PARTTYPE_PARSE_DATA
+ | FDISK_PARTTYPE_PARSE_ALIAS
+ | FDISK_PARTTYPE_PARSE_NAME
+ | FDISK_PARTTYPE_PARSE_SEQNUM);
+ if (!t)
+ fdisk_info(cxt, _("Failed to parse '%s' partition type."), buf);
+ return t;
+ }
+ } while (1);
+
+ return NULL;
+}
+
+
+void list_partition_types(struct fdisk_context *cxt)
+{
+ size_t ntypes = 0, next = 0;
+ struct fdisk_label *lb;
+ int pager = 0;
+
+ assert(cxt);
+ lb = fdisk_get_label(cxt, NULL);
+ if (!lb)
+ return;
+ ntypes = fdisk_label_get_nparttypes(lb);
+ if (!ntypes)
+ return;
+
+ if (fdisk_label_has_code_parttypes(lb)) {
+ /*
+ * Prints in 4 columns in format <hex> <name>
+ */
+ size_t last[4], done = 0, size;
+ int i;
+
+ size = ntypes;
+
+ for (i = 3; i >= 0; i--)
+ last[3 - i] = done += (size + i - done) / (i + 1);
+ i = done = 0;
+
+ do {
+ #define NAME_WIDTH 15
+ char name[NAME_WIDTH * MB_LEN_MAX];
+ size_t width = NAME_WIDTH;
+ const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, next);
+ size_t ret;
+
+ if (fdisk_parttype_get_name(t)) {
+ printf("%s%02x ", i ? " " : "\n",
+ fdisk_parttype_get_code(t));
+ ret = mbsalign(_(fdisk_parttype_get_name(t)),
+ name, sizeof(name),
+ &width, MBS_ALIGN_LEFT, 0);
+
+ if (ret == (size_t)-1 || ret >= sizeof(name))
+ printf("%-15.15s",
+ _(fdisk_parttype_get_name(t)));
+ else
+ fputs(name, stdout);
+ }
+
+ next = last[i++] + done;
+ if (i > 3 || next >= last[i]) {
+ i = 0;
+ next = ++done;
+ }
+ } while (done < last[0]);
+
+ putchar('\n');
+ } else {
+ /*
+ * Prints 1 column in format <idx> <name> <typestr>
+ */
+ size_t i;
+
+ pager_open();
+ pager = 1;
+
+ for (i = 0; i < ntypes; i++) {
+ const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, i);
+ printf("%3zu %-30s %s\n", i + 1,
+ fdisk_parttype_get_name(t),
+ fdisk_parttype_get_string(t));
+ }
+
+ }
+
+
+ /*
+ * Aliases
+ */
+ if (fdisk_label_has_parttypes_shortcuts(lb)) {
+ const char *alias = NULL, *typestr = NULL;
+ int rc = 0;
+
+ fputs(_("\nAliases:\n"), stdout);
+
+ for (next = 0; rc == 0 || rc == 2; next++) {
+ /* rc: <0 error, 0 success, 1 end, 2 deprecated */
+ rc = fdisk_label_get_parttype_shortcut(lb,
+ next, &typestr, NULL, &alias);
+ if (rc == 0)
+ printf(" %-14s - %s\n", alias, typestr);
+ }
+ }
+
+ if (pager)
+ pager_close();
+
+}
+
+void toggle_dos_compatibility_flag(struct fdisk_context *cxt)
+{
+ struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
+ int flag;
+
+ if (!lb)
+ return;
+
+ flag = !fdisk_dos_is_compatible(lb);
+ fdisk_info(cxt, flag ?
+ _("DOS Compatibility flag is set (DEPRECATED!)") :
+ _("DOS Compatibility flag is not set"));
+
+ fdisk_dos_enable_compatible(lb, flag);
+
+ if (fdisk_is_label(cxt, DOS))
+ fdisk_reset_alignment(cxt); /* reset the current label */
+}
+
+void change_partition_type(struct fdisk_context *cxt)
+{
+ size_t i;
+ struct fdisk_parttype *t = NULL;
+ struct fdisk_partition *pa = NULL;
+ const char *old = NULL;
+ int canceled = 0;
+
+ assert(cxt);
+
+ if (fdisk_ask_partnum(cxt, &i, FALSE))
+ return;
+
+ if (fdisk_get_partition(cxt, i, &pa)) {
+ fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
+ return;
+ }
+
+ t = (struct fdisk_parttype *) fdisk_partition_get_type(pa);
+ old = t ? fdisk_parttype_get_name(t) : _("Unknown");
+
+ do {
+ t = ask_partition_type(cxt, &canceled);
+ if (canceled)
+ break;
+ } while (!t);
+
+ if (canceled == 0 && t && fdisk_set_partition_type(cxt, i, t) == 0)
+ fdisk_info(cxt,
+ _("Changed type of partition '%s' to '%s'."),
+ old, t ? fdisk_parttype_get_name(t) : _("Unknown"));
+ else
+ fdisk_info(cxt,
+ _("Type of partition %zu is unchanged: %s."),
+ i + 1, old);
+
+ fdisk_unref_partition(pa);
+ fdisk_unref_parttype(t);
+}
+
+int print_partition_info(struct fdisk_context *cxt)
+{
+ struct fdisk_partition *pa = NULL;
+ int rc = 0;
+ size_t i, nfields;
+ int *fields = NULL;
+ struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
+
+ if ((rc = fdisk_ask_partnum(cxt, &i, FALSE)))
+ return rc;
+
+ if ((rc = fdisk_get_partition(cxt, i, &pa))) {
+ fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
+ return rc;
+ }
+
+ if ((rc = fdisk_label_get_fields_ids_all(lb, cxt, &fields, &nfields)))
+ goto clean_data;
+
+ for (i = 0; i < nfields; ++i) {
+ int id = fields[i];
+ char *data = NULL;
+ const struct fdisk_field *fd = fdisk_label_get_field(lb, id);
+
+ if (!fd)
+ continue;
+
+ rc = fdisk_partition_to_string(pa, cxt, id, &data);
+ if (rc < 0)
+ goto clean_data;
+ if (!data || !*data)
+ continue;
+ fdisk_info(cxt, "%15s: %s", fdisk_field_get_name(fd), data);
+ free(data);
+ }
+
+clean_data:
+ fdisk_unref_partition(pa);
+ free(fields);
+ return rc;
+}
+
+static size_t skip_empty(const unsigned char *buf, size_t i, size_t sz)
+{
+ size_t next;
+ const unsigned char *p0 = buf + i;
+
+ for (next = i + 16; next < sz; next += 16) {
+ if (memcmp(p0, buf + next, 16) != 0)
+ break;
+ }
+
+ return next == i + 16 ? i : next;
+}
+
+static void dump_buffer(off_t base, unsigned char *buf, size_t sz)
+{
+ size_t i, l, next = 0;
+
+ if (!buf)
+ return;
+ for (i = 0, l = 0; i < sz; i++, l++) {
+ if (l == 0) {
+ if (!next)
+ next = skip_empty(buf, i, sz);
+ printf("%08jx ", (intmax_t)base + i);
+ }
+ printf(" %02x", buf[i]);
+ if (l == 7) /* words separator */
+ fputs(" ", stdout);
+ else if (l == 15) {
+ fputc('\n', stdout); /* next line */
+ l = -1;
+ if (next > i) {
+ printf("*\n");
+ i = next - 1;
+ }
+ next = 0;
+ }
+ }
+ if (l > 0)
+ printf("\n");
+}
+
+static void dump_blkdev(struct fdisk_context *cxt, const char *name,
+ uint64_t offset, size_t size)
+{
+ int fd = fdisk_get_devfd(cxt);
+
+ fdisk_info(cxt, _("\n%s: offset = %"PRIu64", size = %zu bytes."),
+ name, offset, size);
+
+ assert(fd >= 0);
+
+ if (lseek(fd, (off_t) offset, SEEK_SET) == (off_t) -1)
+ fdisk_warn(cxt, _("cannot seek"));
+ else {
+ unsigned char *buf = xmalloc(size);
+
+ if (read_all(fd, (char *) buf, size) != (ssize_t) size)
+ fdisk_warn(cxt, _("cannot read"));
+ else
+ dump_buffer(offset, buf, size);
+ free(buf);
+ }
+}
+
+void dump_firstsector(struct fdisk_context *cxt)
+{
+ assert(cxt);
+
+ dump_blkdev(cxt, _("First sector"), 0, fdisk_get_sector_size(cxt));
+}
+
+void dump_disklabel(struct fdisk_context *cxt)
+{
+ int i = 0;
+ const char *name = NULL;
+ uint64_t offset = 0;
+ size_t size = 0;
+
+ assert(cxt);
+
+ while (fdisk_locate_disklabel(cxt, i++, &name, &offset, &size) == 0 && size)
+ dump_blkdev(cxt, name, offset, size);
+}
+
+static fdisk_sector_t get_dev_blocks(char *dev)
+{
+ int fd, ret;
+ fdisk_sector_t size;
+
+ if ((fd = open(dev, O_RDONLY|O_NONBLOCK)) < 0)
+ err(EXIT_FAILURE, _("cannot open %s"), dev);
+ ret = blkdev_get_sectors(fd, (unsigned long long *) &size);
+ close(fd);
+ if (ret < 0)
+ err(EXIT_FAILURE, _("BLKGETSIZE ioctl failed on %s"), dev);
+ return size/2;
+}
+
+
+void follow_wipe_mode(struct fdisk_context *cxt)
+{
+ int dowipe = wipemode == WIPEMODE_ALWAYS ? 1 : 0;
+
+ if (isatty(STDIN_FILENO) && wipemode == WIPEMODE_AUTO)
+ dowipe = 1; /* do it in interactive mode */
+
+ if (fdisk_is_ptcollision(cxt) && wipemode != WIPEMODE_NEVER)
+ dowipe = 1; /* always remove old PT */
+
+ fdisk_enable_wipe(cxt, dowipe);
+ if (dowipe)
+ fdisk_warnx(cxt, _(
+ "The device contains '%s' signature and it will be removed by a write command. "
+ "See fdisk(8) man page and --wipe option for more details."),
+ fdisk_get_collision(cxt));
+ else
+ fdisk_warnx(cxt, _(
+ "The device contains '%s' signature and it may remain on the device. "
+ "It is recommended to wipe the device with wipefs(8) or "
+ "fdisk --wipe, in order to avoid possible collisions."),
+ fdisk_get_collision(cxt));
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+
+ fputs(USAGE_HEADER, out);
+
+ fprintf(out,
+ _(" %1$s [options] <disk> change partition table\n"
+ " %1$s [options] -l [<disk>...] list partition table(s)\n"),
+ program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Display or manipulate a disk partition table.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -b, --sector-size <size> physical and logical sector size\n"), out);
+ fputs(_(" -B, --protect-boot don't erase bootbits when creating a new label\n"), out);
+ fputs(_(" -c, --compatibility[=<mode>] mode is 'dos' or 'nondos' (default)\n"), out);
+ fprintf(out,
+ _(" -L, --color[=<when>] colorize output (%s, %s or %s)\n"), "auto", "always", "never");
+ fprintf(out,
+ " %s\n", USAGE_COLORS_DEFAULT);
+ fputs(_(" -l, --list display partitions and exit\n"), out);
+ fputs(_(" -x, --list-details like --list but with more details\n"), out);
+
+ fputs(_(" -n, --noauto-pt don't create default partition table on empty devices\n"), out);
+ fputs(_(" -o, --output <list> output columns\n"), out);
+ fputs(_(" -t, --type <type> recognize specified partition table type only\n"), out);
+ fputs(_(" -u, --units[=<unit>] display units: 'cylinders' or 'sectors' (default)\n"), out);
+ fputs(_(" -s, --getsz display device size in 512-byte sectors [DEPRECATED]\n"), out);
+ fputs(_(" --bytes print SIZE in bytes rather than in human readable format\n"), out);
+ fprintf(out,
+ _(" --lock[=<mode>] use exclusive device lock (%s, %s or %s)\n"), "yes", "no", "nonblock");
+ fprintf(out,
+ _(" -w, --wipe <mode> wipe signatures (%s, %s or %s)\n"), "auto", "always", "never");
+ fprintf(out,
+ _(" -W, --wipe-partitions <mode> wipe signatures from new partitions (%s, %s or %s)\n"), "auto", "always", "never");
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_(" -C, --cylinders <number> specify the number of cylinders\n"), out);
+ fputs(_(" -H, --heads <number> specify the number of heads\n"), out);
+ fputs(_(" -S, --sectors <number> specify the number of sectors per track\n"), out);
+
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(31));
+
+ list_available_columns(out);
+
+ printf(USAGE_MAN_TAIL("fdisk(8)"));
+ exit(EXIT_SUCCESS);
+}
+
+
+enum {
+ ACT_FDISK = 0, /* default */
+ ACT_LIST,
+ ACT_LIST_DETAILS,
+ ACT_SHOWSIZE
+};
+
+int main(int argc, char **argv)
+{
+ int rc, i, c, act = ACT_FDISK, noauto_pt = 0;
+ int colormode = UL_COLORMODE_UNDEF;
+ struct fdisk_context *cxt;
+ char *outarg = NULL;
+ const char *devname, *lockmode = NULL;
+ enum {
+ OPT_BYTES = CHAR_MAX + 1,
+ OPT_LOCK
+ };
+ static const struct option longopts[] = {
+ { "bytes", no_argument, NULL, OPT_BYTES },
+ { "color", optional_argument, NULL, 'L' },
+ { "compatibility", optional_argument, NULL, 'c' },
+ { "cylinders", required_argument, NULL, 'C' },
+ { "heads", required_argument, NULL, 'H' },
+ { "sectors", required_argument, NULL, 'S' },
+ { "getsz", no_argument, NULL, 's' },
+ { "help", no_argument, NULL, 'h' },
+ { "list", no_argument, NULL, 'l' },
+ { "list-details", no_argument, NULL, 'x' },
+ { "lock", optional_argument, NULL, OPT_LOCK },
+ { "noauto-pt", no_argument, NULL, 'n' },
+ { "sector-size", required_argument, NULL, 'b' },
+ { "type", required_argument, NULL, 't' },
+ { "units", optional_argument, NULL, 'u' },
+ { "version", no_argument, NULL, 'V' },
+ { "output", no_argument, NULL, 'o' },
+ { "protect-boot", no_argument, NULL, 'B' },
+ { "wipe", required_argument, NULL, 'w' },
+ { "wipe-partitions",required_argument, NULL, 'W' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ fdisk_init_debug(0);
+ scols_init_debug(0);
+ fdiskprog_init_debug();
+
+ cxt = fdisk_new_context();
+ if (!cxt)
+ err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
+
+ fdisk_set_ask(cxt, ask_callback, NULL);
+
+ while ((c = getopt_long(argc, argv, "b:Bc::C:hH:lL::no:sS:t:u::vVw:W:x",
+ longopts, NULL)) != -1) {
+ switch (c) {
+ case 'b':
+ {
+ size_t sz = strtou32_or_err(optarg,
+ _("invalid sector size argument"));
+ if (sz != 512 && sz != 1024 && sz != 2048 && sz != 4096)
+ errx(EXIT_FAILURE, _("invalid sector size argument"));
+ fdisk_save_user_sector_size(cxt, sz, sz);
+ break;
+ }
+ case 'B':
+ fdisk_enable_bootbits_protection(cxt, 1);
+ break;
+ case 'C':
+ fdisk_save_user_geometry(cxt,
+ strtou32_or_err(optarg,
+ _("invalid cylinders argument")),
+ 0, 0);
+ break;
+ case 'c':
+ if (optarg) {
+ /* this setting is independent on the current
+ * actively used label
+ */
+ char *p = *optarg == '=' ? optarg + 1 : optarg;
+ struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
+
+ if (!lb)
+ err(EXIT_FAILURE, _("not found DOS label driver"));
+ if (strcmp(p, "dos") == 0)
+ fdisk_dos_enable_compatible(lb, TRUE);
+ else if (strcmp(p, "nondos") == 0)
+ fdisk_dos_enable_compatible(lb, FALSE);
+ else
+ errx(EXIT_FAILURE, _("unknown compatibility mode '%s'"), p);
+ }
+ /* use default if no optarg specified */
+ break;
+ case 'H':
+ fdisk_save_user_geometry(cxt, 0,
+ strtou32_or_err(optarg,
+ _("invalid heads argument")),
+ 0);
+ break;
+ case 'S':
+ fdisk_save_user_geometry(cxt, 0, 0,
+ strtou32_or_err(optarg,
+ _("invalid sectors argument")));
+ break;
+ case 'l':
+ act = ACT_LIST;
+ break;
+ case 'x':
+ act = ACT_LIST_DETAILS;
+ break;
+ case 'L':
+ colormode = UL_COLORMODE_AUTO;
+ if (optarg)
+ colormode = colormode_or_err(optarg,
+ _("unsupported color mode"));
+ break;
+ case 'n':
+ noauto_pt = 1;
+ break;
+ case 'o':
+ outarg = optarg;
+ break;
+ case 's':
+ act = ACT_SHOWSIZE;
+ break;
+ case 't':
+ {
+ struct fdisk_label *lb = NULL;
+
+ while (fdisk_next_label(cxt, &lb) == 0)
+ fdisk_label_set_disabled(lb, 1);
+
+ lb = fdisk_get_label(cxt, optarg);
+ if (!lb)
+ errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg);
+ fdisk_label_set_disabled(lb, 0);
+ break;
+ }
+ case 'u':
+ if (optarg && *optarg == '=')
+ optarg++;
+ if (fdisk_set_unit(cxt, optarg) != 0)
+ errx(EXIT_FAILURE, _("unsupported unit"));
+ break;
+ case 'V': /* preferred for util-linux */
+ case 'v': /* for backward compatibility only */
+ print_version(EXIT_SUCCESS);
+ case 'w':
+ wipemode = wipemode_from_string(optarg);
+ if (wipemode < 0)
+ errx(EXIT_FAILURE, _("unsupported wipe mode"));
+ break;
+ case 'W':
+ pwipemode = wipemode_from_string(optarg);
+ if (pwipemode < 0)
+ errx(EXIT_FAILURE, _("unsupported wipe mode"));
+ break;
+ case 'h':
+ usage();
+ case OPT_BYTES:
+ fdisk_set_size_unit(cxt, FDISK_SIZEUNIT_BYTES);
+ break;
+ case OPT_LOCK:
+ lockmode = "1";
+ if (optarg) {
+ if (*optarg == '=')
+ optarg++;
+ lockmode = optarg;
+ }
+ break;
+ default:
+ errtryhelp(EXIT_FAILURE);
+ }
+ }
+
+ if (argc-optind != 1 && fdisk_has_user_device_properties(cxt))
+ warnx(_("The device properties (sector size and geometry) should"
+ " be used with one specified device only."));
+
+ colors_init(colormode, "fdisk");
+ is_interactive = isatty(STDIN_FILENO);
+
+ switch (act) {
+ case ACT_LIST:
+ case ACT_LIST_DETAILS:
+ fdisk_enable_listonly(cxt, 1);
+
+ if (act == ACT_LIST_DETAILS)
+ fdisk_enable_details(cxt, 1);
+
+ init_fields(cxt, outarg, NULL);
+
+ if (argc > optind) {
+ int k;
+
+ for (rc = 0, k = optind; k < argc; k++)
+ rc += print_device_pt(cxt, argv[k], 1, 0, k != optind);
+
+ if (rc)
+ return EXIT_FAILURE;
+ } else
+ print_all_devices_pt(cxt, 0);
+ break;
+
+ case ACT_SHOWSIZE:
+ /* deprecated */
+ if (argc - optind <= 0) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ for (i = optind; i < argc; i++) {
+ uintmax_t blks = get_dev_blocks(argv[i]);
+
+ if (argc - optind == 1)
+ printf("%ju\n", blks);
+ else
+ printf("%s: %ju\n", argv[i], blks);
+ }
+ break;
+
+ case ACT_FDISK:
+ if (argc-optind != 1) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+
+ /* Here starts interactive mode, use fdisk_{warn,info,..} functions */
+ color_scheme_enable("welcome", UL_COLOR_GREEN);
+ fdisk_info(cxt, _("Welcome to fdisk (%s)."), PACKAGE_STRING);
+ color_disable();
+ fdisk_info(cxt, _("Changes will remain in memory only, until you decide to write them.\n"
+ "Be careful before using the write command.\n"));
+
+ devname = argv[optind];
+ rc = fdisk_assign_device(cxt, devname, 0);
+ if (rc == -EACCES) {
+ rc = fdisk_assign_device(cxt, devname, 1);
+ if (rc == 0)
+ fdisk_warnx(cxt, _("Device is open in read-only mode."));
+ }
+ if (rc)
+ err(EXIT_FAILURE, _("cannot open %s"), devname);
+
+ if (fdisk_device_is_used(cxt))
+ fdisk_warnx(cxt, _(
+ "This disk is currently in use - repartitioning is probably a bad idea.\n"
+ "It's recommended to umount all file systems, and swapoff all swap\n"
+ "partitions on this disk.\n"));
+
+ fflush(stdout);
+
+ if (!fdisk_is_readonly(cxt)
+ && blkdev_lock(fdisk_get_devfd(cxt), devname, lockmode) != 0) {
+ fdisk_deassign_device(cxt, 1);
+ fdisk_unref_context(cxt);
+ return EXIT_FAILURE;
+ }
+
+ if (fdisk_get_collision(cxt))
+ follow_wipe_mode(cxt);
+
+ if (!fdisk_has_label(cxt)) {
+ fdisk_info(cxt, _("Device does not contain a recognized partition table."));
+ if (!noauto_pt)
+ fdisk_create_disklabel(cxt, NULL);
+
+ } else if (fdisk_is_label(cxt, GPT) && fdisk_gpt_is_hybrid(cxt))
+ fdisk_warnx(cxt, _(
+ "A hybrid GPT was detected. You have to sync "
+ "the hybrid MBR manually (expert command 'M')."));
+
+ init_fields(cxt, outarg, NULL); /* -o <columns> */
+
+ if (!fdisk_is_readonly(cxt)) {
+ fdisk_get_partitions(cxt, &original_layout);
+ device_is_used = fdisk_device_is_used(cxt);
+ }
+
+ while (1)
+ process_fdisk_menu(&cxt);
+ }
+
+ fdisk_unref_context(cxt);
+ return EXIT_SUCCESS;
+}