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 28 #ifdef HAVE_SYS_STAT_H 29 #include <sys/stat.h> 30 #endif 31 #ifdef HAVE_ERRNO_H 32 #include <errno.h> 33 #endif 34 #ifdef HAVE_FCNTL_H 35 #include <fcntl.h> 36 #endif 37 #ifdef HAVE_IO_H 38 #include <io.h> 39 #endif 40 #ifdef HAVE_STDLIB_H 41 #include <stdlib.h> 42 #endif 43 #ifdef HAVE_STRING_H 44 #include <string.h> 45 #endif 46 #ifdef HAVE_UNISTD_H 47 #include <unistd.h> 48 #endif 49 50 #include "archive.h" 51 52 struct write_fd_data { 53 int fd; 54 }; 55 56 static int file_free(struct archive *, void *); 57 static int file_open(struct archive *, void *); 58 static ssize_t file_write(struct archive *, void *, const void *buff, size_t); 59 60 int 61 archive_write_open_fd(struct archive *a, int fd) 62 { 63 struct write_fd_data *mine; 64 65 mine = malloc(sizeof(*mine)); 66 if (mine == NULL) { 67 archive_set_error(a, ENOMEM, "No memory"); 68 return (ARCHIVE_FATAL); 69 } 70 mine->fd = fd; 71 #if defined(__CYGWIN__) || defined(_WIN32) 72 setmode(mine->fd, O_BINARY); 73 #endif 74 return (archive_write_open2(a, mine, 75 file_open, file_write, NULL, file_free)); 76 } 77 78 static int 79 file_open(struct archive *a, void *client_data) 80 { 81 struct write_fd_data *mine; 82 struct stat st; 83 84 mine = (struct write_fd_data *)client_data; 85 86 if (fstat(mine->fd, &st) != 0) { 87 archive_set_error(a, errno, "Couldn't stat fd %d", mine->fd); 88 return (ARCHIVE_FATAL); 89 } 90 91 /* 92 * If this is a regular file, don't add it to itself. 93 */ 94 if (S_ISREG(st.st_mode)) 95 archive_write_set_skip_file(a, st.st_dev, st.st_ino); 96 97 /* 98 * If client hasn't explicitly set the last block handling, 99 * then set it here. 100 */ 101 if (archive_write_get_bytes_in_last_block(a) < 0) { 102 /* If the output is a block or character device, fifo, 103 * or stdout, pad the last block, otherwise leave it 104 * unpadded. */ 105 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) || 106 S_ISFIFO(st.st_mode) || (mine->fd == 1)) 107 /* Last block will be fully padded. */ 108 archive_write_set_bytes_in_last_block(a, 0); 109 else 110 archive_write_set_bytes_in_last_block(a, 1); 111 } 112 113 return (ARCHIVE_OK); 114 } 115 116 static ssize_t 117 file_write(struct archive *a, void *client_data, const void *buff, size_t length) 118 { 119 struct write_fd_data *mine; 120 ssize_t bytesWritten; 121 122 mine = (struct write_fd_data *)client_data; 123 for (;;) { 124 bytesWritten = write(mine->fd, buff, length); 125 if (bytesWritten <= 0) { 126 if (errno == EINTR) 127 continue; 128 archive_set_error(a, errno, "Write error"); 129 return (-1); 130 } 131 return (bytesWritten); 132 } 133 } 134 135 static int 136 file_free(struct archive *a, void *client_data) 137 { 138 struct write_fd_data *mine = (struct write_fd_data *)client_data; 139 140 (void)a; /* UNUSED */ 141 if (mine == NULL) 142 return (ARCHIVE_OK); 143 free(mine); 144 return (ARCHIVE_OK); 145 } 146