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126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* gpgtar.h - Global definitions for gpgtar
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG 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 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GPGTAR_H
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#define GPGTAR_H
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#include "../common/util.h"
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/* We keep all global options in the structure OPT. */
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struct
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{
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int verbose;
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int quiet;
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const char *outfile;
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int symmetric;
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const char *filename;
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} opt;
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/* The size of a tar record. All IO is done in chunks of this size.
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Note that we don't care about blocking because this version of tar
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is not expected to be used directly on a tape drive in fact it is
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used in a pipeline with GPG and thus any blocking would be
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useless. */
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#define RECORDSIZE 512
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/* Description of the USTAR header format. */
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struct ustar_raw_header
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{
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char name[100];
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char mode[8];
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char uid[8];
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char gid[8];
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char size[12];
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char mtime[12];
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char checksum[8];
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char typeflag[1];
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char linkname[100];
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char magic[6];
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char version[2];
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char uname[32];
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char gname[32];
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char devmajor[8];
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char devminor[8];
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char prefix[155];
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char pad[12];
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};
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/* Filetypes as defined by USTAR. */
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typedef enum
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{
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TF_REGULAR,
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TF_HARDLINK,
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TF_SYMLINK,
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TF_CHARDEV,
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TF_BLOCKDEV,
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TF_DIRECTORY,
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TF_FIFO,
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TF_RESERVED,
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TF_UNKNOWN, /* Needs to be treated as regular file. */
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TF_NOTSUP /* Not supported (used with --create). */
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} typeflag_t;
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/* The internal represenation of a TAR header. */
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struct tar_header_s;
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typedef struct tar_header_s *tar_header_t;
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struct tar_header_s
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{
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tar_header_t next; /* Used to build a linked list iof entries. */
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unsigned long mode; /* The file mode. */
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unsigned long nlink; /* Number of hard links. */
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unsigned long uid; /* The user id of the file. */
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unsigned long gid; /* The group id of the file. */
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unsigned long long size; /* The size of the file. */
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unsigned long long mtime; /* Modification time since Epoch. Note
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that we don't use time_t here but a
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type which is more likely to be larger
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that 32 bit and thus allows to track
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times beyond 2106. */
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typeflag_t typeflag; /* The type of the file. */
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unsigned long long nrecords; /* Number of data records. */
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char name[1]; /* Filename (dynamically extended). */
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};
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/*-- gpgtar.c --*/
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gpg_error_t read_record (estream_t stream, void *record);
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gpg_error_t write_record (estream_t stream, const void *record);
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/*-- gpgtar-create.c --*/
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void gpgtar_create (char **inpattern);
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/*-- gpgtar-extract.c --*/
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void gpgtar_extract (const char *filename);
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/*-- gpgtar-list.c --*/
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void gpgtar_list (const char *filename);
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tar_header_t gpgtar_read_header (estream_t stream);
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void gpgtar_print_header (tar_header_t header, estream_t out);
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#endif /*GPGTAR_H*/
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