1 /*- 2 * Copyright (c) 2003-2007 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "archive_platform.h" 27 __FBSDID("$FreeBSD: head/lib/libarchive/archive_write_open_fd.c 201093 2009-12-28 02:28:44Z kientzle $"); 28 29 #ifdef HAVE_SYS_STAT_H 30 #include <sys/stat.h> 31 #endif 32 #ifdef HAVE_ERRNO_H 33 #include <errno.h> 34 #endif 35 #ifdef HAVE_FCNTL_H 36 #include <fcntl.h> 37 #endif 38 #ifdef HAVE_IO_H 39 #include <io.h> 40 #endif 41 #ifdef HAVE_STDLIB_H 42 #include <stdlib.h> 43 #endif 44 #ifdef HAVE_STRING_H 45 #include <string.h> 46 #endif 47 #ifdef HAVE_UNISTD_H 48 #include <unistd.h> 49 #endif 50 51 #include "archive.h" 52 53 struct write_fd_data { 54 off_t offset; 55 int fd; 56 }; 57 58 static int file_close(struct archive *, void *); 59 static int file_open(struct archive *, void *); 60 static ssize_t file_write(struct archive *, void *, const void *buff, size_t); 61 62 int 63 archive_write_open_fd(struct archive *a, int fd) 64 { 65 struct write_fd_data *mine; 66 67 mine = (struct write_fd_data *)malloc(sizeof(*mine)); 68 if (mine == NULL) { 69 archive_set_error(a, ENOMEM, "No memory"); 70 return (ARCHIVE_FATAL); 71 } 72 mine->fd = fd; 73 #if defined(__CYGWIN__) || defined(_WIN32) 74 setmode(mine->fd, O_BINARY); 75 #endif 76 return (archive_write_open(a, mine, 77 file_open, file_write, file_close)); 78 } 79 80 static int 81 file_open(struct archive *a, void *client_data) 82 { 83 struct write_fd_data *mine; 84 struct stat st; 85 86 mine = (struct write_fd_data *)client_data; 87 88 if (fstat(mine->fd, &st) != 0) { 89 archive_set_error(a, errno, "Couldn't stat fd %d", mine->fd); 90 return (ARCHIVE_FATAL); 91 } 92 93 /* 94 * If this is a regular file, don't add it to itself. 95 */ 96 if (S_ISREG(st.st_mode)) 97 archive_write_set_skip_file(a, st.st_dev, st.st_ino); 98 99 /* 100 * If client hasn't explicitly set the last block handling, 101 * then set it here. 102 */ 103 if (archive_write_get_bytes_in_last_block(a) < 0) { 104 /* If the output is a block or character device, fifo, 105 * or stdout, pad the last block, otherwise leave it 106 * unpadded. */ 107 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) || 108 S_ISFIFO(st.st_mode) || (mine->fd == 1)) 109 /* Last block will be fully padded. */ 110 archive_write_set_bytes_in_last_block(a, 0); 111 else 112 archive_write_set_bytes_in_last_block(a, 1); 113 } 114 115 return (ARCHIVE_OK); 116 } 117 118 static ssize_t 119 file_write(struct archive *a, void *client_data, const void *buff, size_t length) 120 { 121 struct write_fd_data *mine; 122 ssize_t bytesWritten; 123 124 mine = (struct write_fd_data *)client_data; 125 bytesWritten = write(mine->fd, buff, length); 126 if (bytesWritten <= 0) { 127 archive_set_error(a, errno, "Write error"); 128 return (-1); 129 } 130 return (bytesWritten); 131 } 132 133 static int 134 file_close(struct archive *a, void *client_data) 135 { 136 struct write_fd_data *mine = (struct write_fd_data *)client_data; 137 138 (void)a; /* UNUSED */ 139 free(mine); 140 return (ARCHIVE_OK); 141 } 142