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
archive_write_open_fd(struct archive * a,int fd)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
file_open(struct archive * a,void * client_data)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
file_write(struct archive * a,void * client_data,const void * buff,size_t length)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
file_close(struct archive * a,void * client_data)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