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Diffstat (limited to 'contrib/libarchive/libarchive/archive_write_set_format_v7tar.c')
-rw-r--r--contrib/libarchive/libarchive/archive_write_set_format_v7tar.c661
1 files changed, 661 insertions, 0 deletions
diff --git a/contrib/libarchive/libarchive/archive_write_set_format_v7tar.c b/contrib/libarchive/libarchive/archive_write_set_format_v7tar.c
new file mode 100644
index 000000000000..17efbaf753f8
--- /dev/null
+++ b/contrib/libarchive/libarchive/archive_write_set_format_v7tar.c
@@ -0,0 +1,661 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * Copyright (c) 2011-2012 Michihiro NAKAJIMA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "archive_platform.h"
+__FBSDID("$FreeBSD$");
+
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "archive.h"
+#include "archive_entry.h"
+#include "archive_entry_locale.h"
+#include "archive_private.h"
+#include "archive_write_private.h"
+
+struct v7tar {
+ uint64_t entry_bytes_remaining;
+ uint64_t entry_padding;
+
+ struct archive_string_conv *opt_sconv;
+ struct archive_string_conv *sconv_default;
+ int init_default_conversion;
+};
+
+/*
+ * Define structure of POSIX 'v7tar' tar header.
+ */
+#define V7TAR_name_offset 0
+#define V7TAR_name_size 100
+#define V7TAR_mode_offset 100
+#define V7TAR_mode_size 6
+#define V7TAR_mode_max_size 8
+#define V7TAR_uid_offset 108
+#define V7TAR_uid_size 6
+#define V7TAR_uid_max_size 8
+#define V7TAR_gid_offset 116
+#define V7TAR_gid_size 6
+#define V7TAR_gid_max_size 8
+#define V7TAR_size_offset 124
+#define V7TAR_size_size 11
+#define V7TAR_size_max_size 12
+#define V7TAR_mtime_offset 136
+#define V7TAR_mtime_size 11
+#define V7TAR_mtime_max_size 12
+#define V7TAR_checksum_offset 148
+#define V7TAR_checksum_size 8
+#define V7TAR_typeflag_offset 156
+#define V7TAR_typeflag_size 1
+#define V7TAR_linkname_offset 157
+#define V7TAR_linkname_size 100
+#define V7TAR_padding_offset 257
+#define V7TAR_padding_size 255
+
+/*
+ * A filled-in copy of the header for initialization.
+ */
+static const char template_header[] = {
+ /* name: 100 bytes */
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,
+ /* Mode, space-null termination: 8 bytes */
+ '0','0','0','0','0','0', ' ','\0',
+ /* uid, space-null termination: 8 bytes */
+ '0','0','0','0','0','0', ' ','\0',
+ /* gid, space-null termination: 8 bytes */
+ '0','0','0','0','0','0', ' ','\0',
+ /* size, space termation: 12 bytes */
+ '0','0','0','0','0','0','0','0','0','0','0', ' ',
+ /* mtime, space termation: 12 bytes */
+ '0','0','0','0','0','0','0','0','0','0','0', ' ',
+ /* Initial checksum value: 8 spaces */
+ ' ',' ',' ',' ',' ',' ',' ',' ',
+ /* Typeflag: 1 byte */
+ 0,
+ /* Linkname: 100 bytes */
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,
+ /* Padding: 255 bytes */
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0
+};
+
+static ssize_t archive_write_v7tar_data(struct archive_write *a, const void *buff,
+ size_t s);
+static int archive_write_v7tar_free(struct archive_write *);
+static int archive_write_v7tar_close(struct archive_write *);
+static int archive_write_v7tar_finish_entry(struct archive_write *);
+static int archive_write_v7tar_header(struct archive_write *,
+ struct archive_entry *entry);
+static int archive_write_v7tar_options(struct archive_write *,
+ const char *, const char *);
+static int format_256(int64_t, char *, int);
+static int format_number(int64_t, char *, int size, int max, int strict);
+static int format_octal(int64_t, char *, int);
+static int format_header_v7tar(struct archive_write *, char h[512],
+ struct archive_entry *, int, struct archive_string_conv *);
+
+/*
+ * Set output format to 'v7tar' format.
+ */
+int
+archive_write_set_format_v7tar(struct archive *_a)
+{
+ struct archive_write *a = (struct archive_write *)_a;
+ struct v7tar *v7tar;
+
+ archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
+ ARCHIVE_STATE_NEW, "archive_write_set_format_v7tar");
+
+ /* If someone else was already registered, unregister them. */
+ if (a->format_free != NULL)
+ (a->format_free)(a);
+
+ /* Basic internal sanity test. */
+ if (sizeof(template_header) != 512) {
+ archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+ "Internal: template_header wrong size: %zu should be 512",
+ sizeof(template_header));
+ return (ARCHIVE_FATAL);
+ }
+
+ v7tar = (struct v7tar *)malloc(sizeof(*v7tar));
+ if (v7tar == NULL) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate v7tar data");
+ return (ARCHIVE_FATAL);
+ }
+ memset(v7tar, 0, sizeof(*v7tar));
+ a->format_data = v7tar;
+ a->format_name = "tar (non-POSIX)";
+ a->format_options = archive_write_v7tar_options;
+ a->format_write_header = archive_write_v7tar_header;
+ a->format_write_data = archive_write_v7tar_data;
+ a->format_close = archive_write_v7tar_close;
+ a->format_free = archive_write_v7tar_free;
+ a->format_finish_entry = archive_write_v7tar_finish_entry;
+ a->archive.archive_format = ARCHIVE_FORMAT_TAR;
+ a->archive.archive_format_name = "tar (non-POSIX)";
+ return (ARCHIVE_OK);
+}
+
+static int
+archive_write_v7tar_options(struct archive_write *a, const char *key,
+ const char *val)
+{
+ struct v7tar *v7tar = (struct v7tar *)a->format_data;
+ int ret = ARCHIVE_FAILED;
+
+ if (strcmp(key, "hdrcharset") == 0) {
+ if (val == NULL || val[0] == 0)
+ archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+ "%s: hdrcharset option needs a character-set name",
+ a->format_name);
+ else {
+ v7tar->opt_sconv = archive_string_conversion_to_charset(
+ &a->archive, val, 0);
+ if (v7tar->opt_sconv != NULL)
+ ret = ARCHIVE_OK;
+ else
+ ret = ARCHIVE_FATAL;
+ }
+ return (ret);
+ }
+
+ /* Note: The "warn" return is just to inform the options
+ * supervisor that we didn't handle it. It will generate
+ * a suitable error if no one used this option. */
+ return (ARCHIVE_WARN);
+}
+
+static int
+archive_write_v7tar_header(struct archive_write *a, struct archive_entry *entry)
+{
+ char buff[512];
+ int ret, ret2;
+ struct v7tar *v7tar;
+ struct archive_entry *entry_main;
+ struct archive_string_conv *sconv;
+
+ v7tar = (struct v7tar *)a->format_data;
+
+ /* Setup default string conversion. */
+ if (v7tar->opt_sconv == NULL) {
+ if (!v7tar->init_default_conversion) {
+ v7tar->sconv_default =
+ archive_string_default_conversion_for_write(
+ &(a->archive));
+ v7tar->init_default_conversion = 1;
+ }
+ sconv = v7tar->sconv_default;
+ } else
+ sconv = v7tar->opt_sconv;
+
+ /* Sanity check. */
+ if (archive_entry_pathname(entry) == NULL) {
+ archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+ "Can't record entry in tar file without pathname");
+ return (ARCHIVE_FAILED);
+ }
+
+ /* Only regular files (not hardlinks) have data. */
+ if (archive_entry_hardlink(entry) != NULL ||
+ archive_entry_symlink(entry) != NULL ||
+ !(archive_entry_filetype(entry) == AE_IFREG))
+ archive_entry_set_size(entry, 0);
+
+ if (AE_IFDIR == archive_entry_filetype(entry)) {
+ const char *p;
+ size_t path_length;
+ /*
+ * Ensure a trailing '/'. Modify the entry so
+ * the client sees the change.
+ */
+#if defined(_WIN32) && !defined(__CYGWIN__)
+ const wchar_t *wp;
+
+ wp = archive_entry_pathname_w(entry);
+ if (wp != NULL && wp[wcslen(wp) -1] != L'/') {
+ struct archive_wstring ws;
+
+ archive_string_init(&ws);
+ path_length = wcslen(wp);
+ if (archive_wstring_ensure(&ws,
+ path_length + 2) == NULL) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate v7tar data");
+ archive_wstring_free(&ws);
+ return(ARCHIVE_FATAL);
+ }
+ /* Should we keep '\' ? */
+ if (wp[path_length -1] == L'\\')
+ path_length--;
+ archive_wstrncpy(&ws, wp, path_length);
+ archive_wstrappend_wchar(&ws, L'/');
+ archive_entry_copy_pathname_w(entry, ws.s);
+ archive_wstring_free(&ws);
+ p = NULL;
+ } else
+#endif
+ p = archive_entry_pathname(entry);
+ /*
+ * On Windows, this is a backup operation just in
+ * case getting WCS failed. On POSIX, this is a
+ * normal operation.
+ */
+ if (p != NULL && p[strlen(p) - 1] != '/') {
+ struct archive_string as;
+
+ archive_string_init(&as);
+ path_length = strlen(p);
+ if (archive_string_ensure(&as,
+ path_length + 2) == NULL) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate v7tar data");
+ archive_string_free(&as);
+ return(ARCHIVE_FATAL);
+ }
+#if defined(_WIN32) && !defined(__CYGWIN__)
+ /* NOTE: This might break the pathname
+ * if the current code page is CP932 and
+ * the pathname includes a character '\'
+ * as a part of its multibyte pathname. */
+ if (p[strlen(p) -1] == '\\')
+ path_length--;
+ else
+#endif
+ archive_strncpy(&as, p, path_length);
+ archive_strappend_char(&as, '/');
+ archive_entry_copy_pathname(entry, as.s);
+ archive_string_free(&as);
+ }
+ }
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+ /* Make sure the path separators in pahtname, hardlink and symlink
+ * are all slash '/', not the Windows path separator '\'. */
+ entry_main = __la_win_entry_in_posix_pathseparator(entry);
+ if (entry_main == NULL) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate v7tar data");
+ return(ARCHIVE_FATAL);
+ }
+ if (entry != entry_main)
+ entry = entry_main;
+ else
+ entry_main = NULL;
+#else
+ entry_main = NULL;
+#endif
+ ret = format_header_v7tar(a, buff, entry, 1, sconv);
+ if (ret < ARCHIVE_WARN) {
+ if (entry_main)
+ archive_entry_free(entry_main);
+ return (ret);
+ }
+ ret2 = __archive_write_output(a, buff, 512);
+ if (ret2 < ARCHIVE_WARN) {
+ if (entry_main)
+ archive_entry_free(entry_main);
+ return (ret2);
+ }
+ if (ret2 < ret)
+ ret = ret2;
+
+ v7tar->entry_bytes_remaining = archive_entry_size(entry);
+ v7tar->entry_padding = 0x1ff & (-(int64_t)v7tar->entry_bytes_remaining);
+ if (entry_main)
+ archive_entry_free(entry_main);
+ return (ret);
+}
+
+/*
+ * Format a basic 512-byte "v7tar" header.
+ *
+ * Returns -1 if format failed (due to field overflow).
+ * Note that this always formats as much of the header as possible.
+ * If "strict" is set to zero, it will extend numeric fields as
+ * necessary (overwriting terminators or using base-256 extensions).
+ *
+ */
+static int
+format_header_v7tar(struct archive_write *a, char h[512],
+ struct archive_entry *entry, int strict,
+ struct archive_string_conv *sconv)
+{
+ unsigned int checksum;
+ int i, r, ret;
+ size_t copy_length;
+ const char *p, *pp;
+ int mytartype;
+
+ ret = 0;
+ mytartype = -1;
+ /*
+ * The "template header" already includes the "v7tar"
+ * signature, various end-of-field markers and other required
+ * elements.
+ */
+ memcpy(h, &template_header, 512);
+
+ /*
+ * Because the block is already null-filled, and strings
+ * are allowed to exactly fill their destination (without null),
+ * I use memcpy(dest, src, strlen()) here a lot to copy strings.
+ */
+ r = archive_entry_pathname_l(entry, &pp, &copy_length, sconv);
+ if (r != 0) {
+ if (errno == ENOMEM) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate memory for Pathname");
+ return (ARCHIVE_FATAL);
+ }
+ archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
+ "Can't translate pathname '%s' to %s",
+ pp, archive_string_conversion_charset_name(sconv));
+ ret = ARCHIVE_WARN;
+ }
+ if (strict && copy_length < V7TAR_name_size)
+ memcpy(h + V7TAR_name_offset, pp, copy_length);
+ else if (!strict && copy_length <= V7TAR_name_size)
+ memcpy(h + V7TAR_name_offset, pp, copy_length);
+ else {
+ /* Prefix is too long. */
+ archive_set_error(&a->archive, ENAMETOOLONG,
+ "Pathname too long");
+ ret = ARCHIVE_FAILED;
+ }
+
+ r = archive_entry_hardlink_l(entry, &p, &copy_length, sconv);
+ if (r != 0) {
+ if (errno == ENOMEM) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate memory for Linkname");
+ return (ARCHIVE_FATAL);
+ }
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "Can't translate linkname '%s' to %s",
+ p, archive_string_conversion_charset_name(sconv));
+ ret = ARCHIVE_WARN;
+ }
+ if (copy_length > 0)
+ mytartype = '1';
+ else {
+ r = archive_entry_symlink_l(entry, &p, &copy_length, sconv);
+ if (r != 0) {
+ if (errno == ENOMEM) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate memory for Linkname");
+ return (ARCHIVE_FATAL);
+ }
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "Can't translate linkname '%s' to %s",
+ p, archive_string_conversion_charset_name(sconv));
+ ret = ARCHIVE_WARN;
+ }
+ }
+ if (copy_length > 0) {
+ if (copy_length >= V7TAR_linkname_size) {
+ archive_set_error(&a->archive, ENAMETOOLONG,
+ "Link contents too long");
+ ret = ARCHIVE_FAILED;
+ copy_length = V7TAR_linkname_size;
+ }
+ memcpy(h + V7TAR_linkname_offset, p, copy_length);
+ }
+
+ if (format_number(archive_entry_mode(entry) & 07777,
+ h + V7TAR_mode_offset, V7TAR_mode_size,
+ V7TAR_mode_max_size, strict)) {
+ archive_set_error(&a->archive, ERANGE,
+ "Numeric mode too large");
+ ret = ARCHIVE_FAILED;
+ }
+
+ if (format_number(archive_entry_uid(entry),
+ h + V7TAR_uid_offset, V7TAR_uid_size, V7TAR_uid_max_size, strict)) {
+ archive_set_error(&a->archive, ERANGE,
+ "Numeric user ID too large");
+ ret = ARCHIVE_FAILED;
+ }
+
+ if (format_number(archive_entry_gid(entry),
+ h + V7TAR_gid_offset, V7TAR_gid_size, V7TAR_gid_max_size, strict)) {
+ archive_set_error(&a->archive, ERANGE,
+ "Numeric group ID too large");
+ ret = ARCHIVE_FAILED;
+ }
+
+ if (format_number(archive_entry_size(entry),
+ h + V7TAR_size_offset, V7TAR_size_size,
+ V7TAR_size_max_size, strict)) {
+ archive_set_error(&a->archive, ERANGE,
+ "File size out of range");
+ ret = ARCHIVE_FAILED;
+ }
+
+ if (format_number(archive_entry_mtime(entry),
+ h + V7TAR_mtime_offset, V7TAR_mtime_size,
+ V7TAR_mtime_max_size, strict)) {
+ archive_set_error(&a->archive, ERANGE,
+ "File modification time too large");
+ ret = ARCHIVE_FAILED;
+ }
+
+ if (mytartype >= 0) {
+ h[V7TAR_typeflag_offset] = mytartype;
+ } else {
+ switch (archive_entry_filetype(entry)) {
+ case AE_IFREG: case AE_IFDIR:
+ break;
+ case AE_IFLNK:
+ h[V7TAR_typeflag_offset] = '2';
+ break;
+ case AE_IFCHR:
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "tar format cannot archive character device");
+ return (ARCHIVE_FAILED);
+ case AE_IFBLK:
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "tar format cannot archive block device");
+ return (ARCHIVE_FAILED);
+ case AE_IFIFO:
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "tar format cannot archive fifo");
+ return (ARCHIVE_FAILED);
+ case AE_IFSOCK:
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "tar format cannot archive socket");
+ return (ARCHIVE_FAILED);
+ default:
+ archive_set_error(&a->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "tar format cannot archive this (mode=0%lo)",
+ (unsigned long)archive_entry_mode(entry));
+ ret = ARCHIVE_FAILED;
+ }
+ }
+
+ checksum = 0;
+ for (i = 0; i < 512; i++)
+ checksum += 255 & (unsigned int)h[i];
+ format_octal(checksum, h + V7TAR_checksum_offset, 6);
+ /* Can't be pre-set in the template. */
+ h[V7TAR_checksum_offset + 6] = '\0';
+ return (ret);
+}
+
+/*
+ * Format a number into a field, with some intelligence.
+ */
+static int
+format_number(int64_t v, char *p, int s, int maxsize, int strict)
+{
+ int64_t limit;
+
+ limit = ((int64_t)1 << (s*3));
+
+ /* "Strict" only permits octal values with proper termination. */
+ if (strict)
+ return (format_octal(v, p, s));
+
+ /*
+ * In non-strict mode, we allow the number to overwrite one or
+ * more bytes of the field termination. Even old tar
+ * implementations should be able to handle this with no
+ * problem.
+ */
+ if (v >= 0) {
+ while (s <= maxsize) {
+ if (v < limit)
+ return (format_octal(v, p, s));
+ s++;
+ limit <<= 3;
+ }
+ }
+
+ /* Base-256 can handle any number, positive or negative. */
+ return (format_256(v, p, maxsize));
+}
+
+/*
+ * Format a number into the specified field using base-256.
+ */
+static int
+format_256(int64_t v, char *p, int s)
+{
+ p += s;
+ while (s-- > 0) {
+ *--p = (char)(v & 0xff);
+ v >>= 8;
+ }
+ *p |= 0x80; /* Set the base-256 marker bit. */
+ return (0);
+}
+
+/*
+ * Format a number into the specified field.
+ */
+static int
+format_octal(int64_t v, char *p, int s)
+{
+ int len;
+
+ len = s;
+
+ /* Octal values can't be negative, so use 0. */
+ if (v < 0) {
+ while (len-- > 0)
+ *p++ = '0';
+ return (-1);
+ }
+
+ p += s; /* Start at the end and work backwards. */
+ while (s-- > 0) {
+ *--p = (char)('0' + (v & 7));
+ v >>= 3;
+ }
+
+ if (v == 0)
+ return (0);
+
+ /* If it overflowed, fill field with max value. */
+ while (len-- > 0)
+ *p++ = '7';
+
+ return (-1);
+}
+
+static int
+archive_write_v7tar_close(struct archive_write *a)
+{
+ return (__archive_write_nulls(a, 512*2));
+}
+
+static int
+archive_write_v7tar_free(struct archive_write *a)
+{
+ struct v7tar *v7tar;
+
+ v7tar = (struct v7tar *)a->format_data;
+ free(v7tar);
+ a->format_data = NULL;
+ return (ARCHIVE_OK);
+}
+
+static int
+archive_write_v7tar_finish_entry(struct archive_write *a)
+{
+ struct v7tar *v7tar;
+ int ret;
+
+ v7tar = (struct v7tar *)a->format_data;
+ ret = __archive_write_nulls(a,
+ (size_t)(v7tar->entry_bytes_remaining + v7tar->entry_padding));
+ v7tar->entry_bytes_remaining = v7tar->entry_padding = 0;
+ return (ret);
+}
+
+static ssize_t
+archive_write_v7tar_data(struct archive_write *a, const void *buff, size_t s)
+{
+ struct v7tar *v7tar;
+ int ret;
+
+ v7tar = (struct v7tar *)a->format_data;
+ if (s > v7tar->entry_bytes_remaining)
+ s = (size_t)v7tar->entry_bytes_remaining;
+ ret = __archive_write_output(a, buff, s);
+ v7tar->entry_bytes_remaining -= s;
+ if (ret != ARCHIVE_OK)
+ return (ret);
+ return (s);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 19:59:12 +0000