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https://github.com/libguestfs/libguestfs.git
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07ba8b6d6b
For Device parameters we expect a block device name. However we were only testing for "/dev/..." and so chardevs (from the appliance) could be passed here, resulting in strange effects. This adds a function is_device_parameter which tests for a valid block device name. For Dev_or_Path parameters much the same, except we can also use the is_device_parameter function elsewhere in the daemon to distinguish if we were called with a device or path parameter. Previously we used a simple test if the path begins with "/dev/...". Reported by Mathieu Tarral.
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/* guestfsd
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* Copyright (C) 2017 Red Hat Inc.
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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 will 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* Bindings for utility functions.
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*
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* Note that functions called from OCaml code B<must never> call
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* any of the C<reply*> functions.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <caml/alloc.h>
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#include <caml/mlvalues.h>
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#include <caml/memory.h>
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#include <caml/unixsupport.h>
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#include "daemon.h"
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#pragma GCC diagnostic ignored "-Wmissing-prototypes"
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/* NB: This is a "noalloc" call. */
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value
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guestfs_int_daemon_get_verbose_flag (value unitv)
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{
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return Val_bool (verbose);
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}
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/* NB: This is a "noalloc" call. */
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value
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guestfs_int_daemon_is_device_parameter (value device)
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{
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return Val_bool (is_device_parameter (String_val (device)));
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}
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/* NB: This is a "noalloc" call. */
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value
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guestfs_int_daemon_is_root_device (value device)
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{
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return Val_bool (is_root_device (String_val (device)));
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}
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/* NB: This is a "noalloc" call. */
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value
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guestfs_int_daemon_prog_exists (value prog)
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{
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return Val_bool (prog_exists (String_val (prog)));
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}
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/* NB: This is a "noalloc" call. */
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value
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guestfs_int_daemon_udev_settle (value optfilenamev, value unitv)
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{
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const char *file;
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if (optfilenamev == Val_int (0))
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file = NULL;
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else
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file = String_val (Field (optfilenamev, 0));
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udev_settle_file (file);
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return Val_unit;
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}
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