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 int fd; 55 }; 56 57 static int file_free(struct archive *, void *); 58 static int file_open(struct archive *, void *); 59 static ssize_t file_write(struct archive *, void *, const void *buff, size_t); 60 61 int 62 archive_write_open_fd(struct archive *a, int fd) 63 { 64 struct write_fd_data *mine; 65 66 mine = (struct write_fd_data *)malloc(sizeof(*mine)); 67 if (mine == NULL) { 68 archive_set_error(a, ENOMEM, "No memory"); 69 return (ARCHIVE_FATAL); 70 } 71 mine->fd = fd; 72 #if defined(__CYGWIN__) || defined(_WIN32) 73 setmode(mine->fd, O_BINARY); 74 #endif 75 return (archive_write_open2(a, mine, 76 file_open, file_write, NULL, file_free)); 77 } 78 79 static int 80 file_open(struct archive *a, void *client_data) 81 { 82 struct write_fd_data *mine; 83 struct stat st; 84 85 mine = (struct write_fd_data *)client_data; 86 87 if (fstat(mine->fd, &st) != 0) { 88 archive_set_error(a, errno, "Couldn't stat fd %d", mine->fd); 89 return (ARCHIVE_FATAL); 90 } 91 92 /* 93 * If this is a regular file, don't add it to itself. 94 */ 95 if (S_ISREG(st.st_mode)) 96 archive_write_set_skip_file(a, st.st_dev, st.st_ino); 97 98 /* 99 * If client hasn't explicitly set the last block handling, 100 * then set it here. 101 */ 102 if (archive_write_get_bytes_in_last_block(a) < 0) { 103 /* If the output is a block or character device, fifo, 104 * or stdout, pad the last block, otherwise leave it 105 * unpadded. */ 106 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) || 107 S_ISFIFO(st.st_mode) || (mine->fd == 1)) 108 /* Last block will be fully padded. */ 109 archive_write_set_bytes_in_last_block(a, 0); 110 else 111 archive_write_set_bytes_in_last_block(a, 1); 112 } 113 114 return (ARCHIVE_OK); 115 } 116 117 static ssize_t 118 file_write(struct archive *a, void *client_data, const void *buff, size_t length) 119 { 120 struct write_fd_data *mine; 121 ssize_t bytesWritten; 122 123 mine = (struct write_fd_data *)client_data; 124 for (;;) { 125 bytesWritten = write(mine->fd, buff, length); 126 if (bytesWritten <= 0) { 127 if (errno == EINTR) 128 continue; 129 archive_set_error(a, errno, "Write error"); 130 return (-1); 131 } 132 return (bytesWritten); 133 } 134 } 135 136 static int 137 file_free(struct archive *a, void *client_data) 138 { 139 struct write_fd_data *mine = (struct write_fd_data *)client_data; 140 141 (void)a; /* UNUSED */ 142 if (mine == NULL) 143 return (ARCHIVE_OK); 144 free(mine); 145 return (ARCHIVE_OK); 146 } 147