| 1 | /** @file
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| 2 | * vboxsf -- VirtualBox Guest Additions for Linux: mount(2) parameter structure.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2019 Oracle Corporation
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| 7 | *
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| 8 | * Permission is hereby granted, free of charge, to any person
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| 9 | * obtaining a copy of this software and associated documentation
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| 10 | * files (the "Software"), to deal in the Software without
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| 11 | * restriction, including without limitation the rights to use,
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| 12 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 13 | * copies of the Software, and to permit persons to whom the
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| 14 | * Software is furnished to do so, subject to the following
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| 15 | * conditions:
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| 16 | *
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| 17 | * The above copyright notice and this permission notice shall be
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| 18 | * included in all copies or substantial portions of the Software.
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| 19 | *
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| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 21 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 22 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 23 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 24 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 25 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 26 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 27 | * OTHER DEALINGS IN THE SOFTWARE.
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| 28 | */
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| 29 |
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| 30 | #ifndef GA_INCLUDED_SRC_linux_sharedfolders_vbsfmount_h
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| 31 | #define GA_INCLUDED_SRC_linux_sharedfolders_vbsfmount_h
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| 32 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 33 | # pragma once
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| 34 | #endif
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| 35 |
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| 36 | /* Linux constraints the size of data mount argument to PAGE_SIZE - 1. */
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| 37 | #define MAX_HOST_NAME 256
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| 38 | #define MAX_NLS_NAME 32
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| 39 |
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| 40 | #define VBSF_MOUNT_SIGNATURE_BYTE_0 '\377'
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| 41 | #define VBSF_MOUNT_SIGNATURE_BYTE_1 '\376'
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| 42 | #define VBSF_MOUNT_SIGNATURE_BYTE_2 '\375'
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| 43 |
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| 44 | struct vbsf_mount_info_new {
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| 45 | /*
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| 46 | * The old version of the mount_info struct started with a
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| 47 | * char name[MAX_HOST_NAME] field, where name cannot be '\0'.
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| 48 | * So the new version of the mount_info struct starts with a
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| 49 | * nullchar field which is always 0 so that we can detect and
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| 50 | * reject the old structure being passed.
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| 51 | */
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| 52 | char nullchar;
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| 53 | char signature[3]; /* signature */
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| 54 | int length; /* length of the whole structure */
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| 55 | char name[MAX_HOST_NAME]; /* share name */
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| 56 | char nls_name[MAX_NLS_NAME]; /* name of an I/O charset */
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| 57 | int uid; /* user ID for all entries, default 0=root */
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| 58 | int gid; /* group ID for all entries, default 0=root */
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| 59 | int ttl; /* time to live */
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| 60 | int dmode; /* mode for directories if != 0xffffffff */
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| 61 | int fmode; /* mode for regular files if != 0xffffffff */
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| 62 | int dmask; /* umask applied to directories */
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| 63 | int fmask; /* umask applied to regular files */
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| 64 | char tag[32]; /**< Mount tag for VBoxService automounter. @since 6.0 */
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| 65 | };
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| 66 |
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| 67 | struct vbsf_mount_opts {
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| 68 | int uid;
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| 69 | int gid;
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| 70 | int ttl;
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| 71 | int dmode;
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| 72 | int fmode;
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| 73 | int dmask;
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| 74 | int fmask;
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| 75 | int ronly;
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| 76 | int sloppy;
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| 77 | int noexec;
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| 78 | int nodev;
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| 79 | int nosuid;
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| 80 | int remount;
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| 81 | char nls_name[MAX_NLS_NAME];
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| 82 | char *convertcp;
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| 83 | };
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| 84 |
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| 85 | /** Completes the mount operation by adding the new mount point to mtab if required. */
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| 86 | int vbsfmount_complete(const char *host_name, const char *mount_point,
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| 87 | unsigned long flags, struct vbsf_mount_opts *opts);
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| 88 |
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| 89 | #endif /* !GA_INCLUDED_SRC_linux_sharedfolders_vbsfmount_h */
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