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/* libguestfs - guestfish and guestmount shared option parsing
* Copyright (C) 2010-2012 Red Hat Inc.
*
* 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 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libintl.h>
#include "c-ctype.h"
#include "guestfs.h"
#include "options.h"
char
add_drives (struct drv *drv, char next_drive)
{
int r;
struct guestfs_add_drive_opts_argv ad_optargs;
if (next_drive > 'z') {
fprintf (stderr,
_("%s: too many drives added on the command line\n"),
program_name);
exit (EXIT_FAILURE);
}
if (drv) {
next_drive = add_drives (drv->next, next_drive);
free (drv->device);
drv->device = NULL;
if (asprintf (&drv->device, "/dev/sd%c", next_drive) == -1) {
perror ("asprintf");
exit (EXIT_FAILURE);
}
switch (drv->type) {
case drv_a:
ad_optargs.bitmask = 0;
if (read_only) {
ad_optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_READONLY_BITMASK;
ad_optargs.readonly = 1;
}
if (drv->a.format) {
ad_optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_FORMAT_BITMASK;
ad_optargs.format = drv->a.format;
}
r = guestfs_add_drive_opts_argv (g, drv->a.filename, &ad_optargs);
if (r == -1)
exit (EXIT_FAILURE);
drv->nr_drives = 1;
next_drive++;
break;
case drv_d:
r = add_libvirt_drives (drv->d.guest);
if (r == -1)
exit (EXIT_FAILURE);
drv->nr_drives = r;
next_drive += r;
break;
case drv_N:
/* guestfs_add_drive (ie. autodetecting) should be safe here
* since we have just created the prepared disk. At the moment
* it will always be "raw" but in a theoretical future we might
* create other formats.
*/
/* -N option is not affected by --ro */
r = guestfs_add_drive (g, drv->N.filename);
if (r == -1)
exit (EXIT_FAILURE);
drv->nr_drives = 1;
next_drive++;
break;
default: /* keep GCC happy */
abort ();
}
}
return next_drive;
}
static void display_mountpoints_on_failure (const char *mp_device, const char *user_supplied_options);
static void canonical_device_name (char *dev);
/* List is built in reverse order, so mount them in reverse order. */
void
mount_mps (struct mp *mp)
{
int r;
if (mp) {
mount_mps (mp->next);
const char *options;
if (mp->options)
options = mp->options;
else if (read_only)
options = "ro";
else
options = "";
r = guestfs_mount_options (g, options, mp->device, mp->mountpoint);
if (r == -1) {
display_mountpoints_on_failure (mp->device, mp->options);
exit (EXIT_FAILURE);
}
}
}
/* If the -m option fails on any command, display a useful error
* message listing the mountpoints.
*/
static void
display_mountpoints_on_failure (const char *mp_device,
const char *user_supplied_options)
{
char **fses;
size_t i;
fses = guestfs_list_filesystems (g);
if (fses == NULL)
return;
if (fses[0] == NULL) {
free (fses);
return;
}
fprintf (stderr, _("%s: '%s' could not be mounted.\n"),
program_name, mp_device);
if (user_supplied_options)
fprintf (stderr, _("%s: Check mount(8) man page to ensure options '%s'\n"
"%s: are supported by the filesystem that is being mounted.\n"),
program_name, user_supplied_options, program_name);
fprintf (stderr, _("%s: Did you mean to mount one of these filesystems?\n"),
program_name);
for (i = 0; fses[i] != NULL; i += 2) {
canonical_device_name (fses[i]);
fprintf (stderr, "%s: \t%s (%s)\n", program_name, fses[i], fses[i+1]);
free (fses[i]);
free (fses[i+1]);
}
free (fses);
}
static void
canonical_device_name (char *dev)
{
if (STRPREFIX (dev, "/dev/") &&
(dev[5] == 'h' || dev[5] == 'v') &&
dev[6] == 'd' &&
c_isalpha (dev[7]) &&
(c_isdigit (dev[8]) || dev[8] == '\0'))
dev[5] = 's';
}
void
free_drives (struct drv *drv)
{
if (!drv) return;
free_drives (drv->next);
free (drv->device);
switch (drv->type) {
case drv_a: /* a.filename and a.format are optargs, don't free them */ break;
case drv_d: /* d.filename is optarg, don't free it */ break;
case drv_N:
free (drv->N.filename);
drv->N.data_free (drv->N.data);
break;
default: ; /* keep GCC happy */
}
free (drv);
}
void
free_mps (struct mp *mp)
{
if (!mp) return;
free_mps (mp->next);
/* The drive and mountpoint fields are not allocated
* from the heap, so we should not free them here.
*/
free (mp);
}
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