Current Path : /compat/linux/proc/68247/root/usr/src/contrib/libarchive/libarchive/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //compat/linux/proc/68247/root/usr/src/contrib/libarchive/libarchive/archive_write.c |
/*- * Copyright (c) 2003-2007 Tim Kientzle * 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: release/9.1.0/contrib/libarchive/libarchive/archive_write.c 229592 2012-01-05 12:06:54Z mm $"); /* * This file contains the "essential" portions of the write API, that * is, stuff that will essentially always be used by any client that * actually needs to write a archive. Optional pieces have been, as * far as possible, separated out into separate files to reduce * needlessly bloating statically-linked clients. */ #ifdef HAVE_SYS_WAIT_H #include <sys/wait.h> #endif #ifdef HAVE_LIMITS_H #include <limits.h> #endif #include <stdio.h> #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #ifdef HAVE_STRING_H #include <string.h> #endif #include <time.h> #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #include "archive.h" #include "archive_entry.h" #include "archive_private.h" #include "archive_write_private.h" static struct archive_vtable *archive_write_vtable(void); static int _archive_write_close(struct archive *); static int _archive_write_free(struct archive *); static int _archive_write_header(struct archive *, struct archive_entry *); static int _archive_write_finish_entry(struct archive *); static ssize_t _archive_write_data(struct archive *, const void *, size_t); static struct archive_vtable * archive_write_vtable(void) { static struct archive_vtable av; static int inited = 0; if (!inited) { av.archive_close = _archive_write_close; av.archive_free = _archive_write_free; av.archive_write_header = _archive_write_header; av.archive_write_finish_entry = _archive_write_finish_entry; av.archive_write_data = _archive_write_data; } return (&av); } /* * Allocate, initialize and return an archive object. */ struct archive * archive_write_new(void) { struct archive_write *a; unsigned char *nulls; a = (struct archive_write *)malloc(sizeof(*a)); if (a == NULL) return (NULL); memset(a, 0, sizeof(*a)); a->archive.magic = ARCHIVE_WRITE_MAGIC; a->archive.state = ARCHIVE_STATE_NEW; a->archive.vtable = archive_write_vtable(); /* * The value 10240 here matches the traditional tar default, * but is otherwise arbitrary. * TODO: Set the default block size from the format selected. */ a->bytes_per_block = 10240; a->bytes_in_last_block = -1; /* Default */ /* Initialize a block of nulls for padding purposes. */ a->null_length = 1024; nulls = (unsigned char *)malloc(a->null_length); if (nulls == NULL) { free(a); return (NULL); } memset(nulls, 0, a->null_length); a->nulls = nulls; /* * Set default compression, but don't set a default format. * Were we to set a default format here, we would force every * client to link in support for that format, even if they didn't * ever use it. */ archive_write_set_compression_none(&a->archive); return (&a->archive); } /* * Set write options for the format. Returns 0 if successful. */ int archive_write_set_format_options(struct archive *_a, const char *s) { struct archive_write *a = (struct archive_write *)_a; char key[64], val[64]; int len, r, ret = ARCHIVE_OK; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW, "archive_write_set_format_options"); archive_clear_error(&a->archive); if (s == NULL || *s == '\0') return (ARCHIVE_OK); if (a->format_options == NULL) /* This format does not support option. */ return (ARCHIVE_OK); while ((len = __archive_parse_options(s, a->format_name, sizeof(key), key, sizeof(val), val)) > 0) { if (val[0] == '\0') r = a->format_options(a, key, NULL); else r = a->format_options(a, key, val); if (r == ARCHIVE_FATAL) return (r); if (r < ARCHIVE_OK) { /* This key was not handled. */ archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, "Unsupported option ``%s''", key); ret = ARCHIVE_WARN; } s += len; } if (len < 0) { archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, "Malformed options string."); return (ARCHIVE_WARN); } return (ret); } /* * Set write options for the compressor. Returns 0 if successful. */ int archive_write_set_compressor_options(struct archive *_a, const char *s) { struct archive_write *a = (struct archive_write *)_a; char key[64], val[64]; int len, r; int ret = ARCHIVE_OK; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW, "archive_write_set_compressor_options"); archive_clear_error(&a->archive); if (s == NULL || *s == '\0') return (ARCHIVE_OK); if (a->compressor.options == NULL) { archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, "Unsupported option ``%s''", s); /* This compressor does not support option. */ return (ARCHIVE_WARN); } while ((len = __archive_parse_options(s, a->archive.compression_name, sizeof(key), key, sizeof(val), val)) > 0) { if (val[0] == '\0') r = a->compressor.options(a, key, NULL); else r = a->compressor.options(a, key, val); if (r == ARCHIVE_FATAL) return (r); if (r < ARCHIVE_OK) { archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, "Unsupported option ``%s''", key); ret = ARCHIVE_WARN; } s += len; } if (len < 0) { archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, "Illegal format options."); return (ARCHIVE_WARN); } return (ret); } /* * Set write options for the format and the compressor. Returns 0 if successful. */ int archive_write_set_options(struct archive *_a, const char *s) { int r1, r2; r1 = archive_write_set_format_options(_a, s); if (r1 < ARCHIVE_WARN) return (r1); r2 = archive_write_set_compressor_options(_a, s); if (r2 < ARCHIVE_WARN) return (r2); if (r1 == ARCHIVE_WARN && r2 == ARCHIVE_WARN) return (ARCHIVE_WARN); return (ARCHIVE_OK); } /* * Set the block size. Returns 0 if successful. */ int archive_write_set_bytes_per_block(struct archive *_a, int bytes_per_block) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW, "archive_write_set_bytes_per_block"); a->bytes_per_block = bytes_per_block; return (ARCHIVE_OK); } /* * Get the current block size. -1 if it has never been set. */ int archive_write_get_bytes_per_block(struct archive *_a) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_get_bytes_per_block"); return (a->bytes_per_block); } /* * Set the size for the last block. * Returns 0 if successful. */ int archive_write_set_bytes_in_last_block(struct archive *_a, int bytes) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_set_bytes_in_last_block"); a->bytes_in_last_block = bytes; return (ARCHIVE_OK); } /* * Return the value set above. -1 indicates it has not been set. */ int archive_write_get_bytes_in_last_block(struct archive *_a) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_get_bytes_in_last_block"); return (a->bytes_in_last_block); } /* * dev/ino of a file to be rejected. Used to prevent adding * an archive to itself recursively. */ int archive_write_set_skip_file(struct archive *_a, dev_t d, ino_t i) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_set_skip_file"); a->skip_file_dev = d; a->skip_file_ino = i; return (ARCHIVE_OK); } /* * Open the archive using the current settings. */ int archive_write_open(struct archive *_a, void *client_data, archive_open_callback *opener, archive_write_callback *writer, archive_close_callback *closer) { struct archive_write *a = (struct archive_write *)_a; int ret; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW, "archive_write_open"); archive_clear_error(&a->archive); a->archive.state = ARCHIVE_STATE_HEADER; a->client_data = client_data; a->client_writer = writer; a->client_opener = opener; a->client_closer = closer; ret = (a->compressor.init)(a); if (a->format_init && ret == ARCHIVE_OK) ret = (a->format_init)(a); return (ret); } /* * Close out the archive. * * Be careful: user might just call write_new and then write_finish. * Don't assume we actually wrote anything or performed any non-trivial * initialization. */ static int _archive_write_close(struct archive *_a) { struct archive_write *a = (struct archive_write *)_a; int r = ARCHIVE_OK, r1 = ARCHIVE_OK; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_close"); /* Finish the last entry. */ if (a->archive.state & ARCHIVE_STATE_DATA) r = ((a->format_finish_entry)(a)); /* Finish off the archive. */ if (a->format_finish != NULL) { r1 = (a->format_finish)(a); if (r1 < r) r = r1; } /* Release format resources. */ if (a->format_destroy != NULL) { r1 = (a->format_destroy)(a); if (r1 < r) r = r1; } /* Finish the compression and close the stream. */ if (a->compressor.finish != NULL) { r1 = (a->compressor.finish)(a); if (r1 < r) r = r1; } /* Close out the client stream. */ if (a->client_closer != NULL) { r1 = (a->client_closer)(&a->archive, a->client_data); if (r1 < r) r = r1; } a->archive.state = ARCHIVE_STATE_CLOSED; return (r); } /* * Destroy the archive structure. */ static int _archive_write_free(struct archive *_a) { struct archive_write *a = (struct archive_write *)_a; int r = ARCHIVE_OK; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_ANY, "archive_write_free"); if (a->archive.state != ARCHIVE_STATE_CLOSED) r = archive_write_close(&a->archive); /* Release various dynamic buffers. */ free((void *)(uintptr_t)(const void *)a->nulls); archive_string_free(&a->archive.error_string); a->archive.magic = 0; free(a); return (r); } /* * Write the appropriate header. */ static int _archive_write_header(struct archive *_a, struct archive_entry *entry) { struct archive_write *a = (struct archive_write *)_a; int ret, r2; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_DATA | ARCHIVE_STATE_HEADER, "archive_write_header"); archive_clear_error(&a->archive); /* In particular, "retry" and "fatal" get returned immediately. */ ret = archive_write_finish_entry(&a->archive); if (ret < ARCHIVE_OK && ret != ARCHIVE_WARN) return (ret); if (a->skip_file_dev != 0 && archive_entry_dev(entry) == a->skip_file_dev && a->skip_file_ino != 0 && archive_entry_ino64(entry) == a->skip_file_ino) { archive_set_error(&a->archive, 0, "Can't add archive to itself"); return (ARCHIVE_FAILED); } /* Format and write header. */ r2 = ((a->format_write_header)(a, entry)); if (r2 < ret) ret = r2; a->archive.state = ARCHIVE_STATE_DATA; return (ret); } static int _archive_write_finish_entry(struct archive *_a) { struct archive_write *a = (struct archive_write *)_a; int ret = ARCHIVE_OK; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA, "archive_write_finish_entry"); if (a->archive.state & ARCHIVE_STATE_DATA) ret = (a->format_finish_entry)(a); a->archive.state = ARCHIVE_STATE_HEADER; return (ret); } /* * Note that the compressor is responsible for blocking. */ static ssize_t _archive_write_data(struct archive *_a, const void *buff, size_t s) { struct archive_write *a = (struct archive_write *)_a; __archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_DATA, "archive_write_data"); archive_clear_error(&a->archive); return ((a->format_write_data)(a, buff, s)); }