diff(1): Commit our patches to contrib/ and get rid of -I-.
[dragonfly.git] / contrib / libarchive-2 / libarchive / archive_write_open_filename.c
blob72eeb54053debb52c25a8b1749337e10fac316b3
1 /*-
2 * Copyright (c) 2003-2007 Tim Kientzle
3 * All rights reserved.
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.
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.
26 #include "archive_platform.h"
27 __FBSDID("$FreeBSD: src/lib/libarchive/archive_write_open_filename.c,v 1.20 2008/02/19 05:46:58 kientzle Exp $");
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_STDLIB_H
39 #include <stdlib.h>
40 #endif
41 #ifdef HAVE_STRING_H
42 #include <string.h>
43 #endif
44 #ifdef HAVE_UNISTD_H
45 #include <unistd.h>
46 #endif
48 #include "archive.h"
50 #ifndef O_BINARY
51 #define O_BINARY 0
52 #endif
54 struct write_file_data {
55 int fd;
56 char filename[1];
59 static int file_close(struct archive *, void *);
60 static int file_open(struct archive *, void *);
61 static ssize_t file_write(struct archive *, void *, const void *buff, size_t);
63 int
64 archive_write_open_file(struct archive *a, const char *filename)
66 return (archive_write_open_filename(a, filename));
69 int
70 archive_write_open_filename(struct archive *a, const char *filename)
72 struct write_file_data *mine;
74 if (filename == NULL || filename[0] == '\0') {
75 mine = (struct write_file_data *)malloc(sizeof(*mine));
76 if (mine == NULL) {
77 archive_set_error(a, ENOMEM, "No memory");
78 return (ARCHIVE_FATAL);
80 mine->filename[0] = '\0'; /* Record that we're using stdout. */
81 } else {
82 mine = (struct write_file_data *)malloc(sizeof(*mine) + strlen(filename));
83 if (mine == NULL) {
84 archive_set_error(a, ENOMEM, "No memory");
85 return (ARCHIVE_FATAL);
87 strcpy(mine->filename, filename);
89 mine->fd = -1;
90 return (archive_write_open(a, mine,
91 file_open, file_write, file_close));
94 static int
95 file_open(struct archive *a, void *client_data)
97 int flags;
98 struct write_file_data *mine;
99 struct stat st;
101 mine = (struct write_file_data *)client_data;
102 flags = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY;
105 * Open the file.
107 if (mine->filename[0] != '\0') {
108 mine->fd = open(mine->filename, flags, 0666);
109 if (mine->fd < 0) {
110 archive_set_error(a, errno, "Failed to open '%s'",
111 mine->filename);
112 return (ARCHIVE_FATAL);
114 } else {
116 * NULL filename is stdout.
118 mine->fd = 1;
119 /* By default, pad archive when writing to stdout. */
120 if (archive_write_get_bytes_in_last_block(a) < 0)
121 archive_write_set_bytes_in_last_block(a, 0);
124 if (fstat(mine->fd, &st) != 0) {
125 archive_set_error(a, errno, "Couldn't stat '%s'",
126 mine->filename);
127 return (ARCHIVE_FATAL);
131 * Set up default last block handling.
133 if (archive_write_get_bytes_in_last_block(a) < 0) {
134 if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
135 S_ISFIFO(st.st_mode))
136 /* Pad last block when writing to device or FIFO. */
137 archive_write_set_bytes_in_last_block(a, 0);
138 else
139 /* Don't pad last block otherwise. */
140 archive_write_set_bytes_in_last_block(a, 1);
144 * If the output file is a regular file, don't add it to
145 * itself. If it's a device file, it's okay to add the device
146 * entry to the output archive.
148 if (S_ISREG(st.st_mode))
149 archive_write_set_skip_file(a, st.st_dev, st.st_ino);
151 return (ARCHIVE_OK);
154 static ssize_t
155 file_write(struct archive *a, void *client_data, const void *buff, size_t length)
157 struct write_file_data *mine;
158 ssize_t bytesWritten;
160 mine = (struct write_file_data *)client_data;
161 bytesWritten = write(mine->fd, buff, length);
162 if (bytesWritten <= 0) {
163 archive_set_error(a, errno, "Write error");
164 return (-1);
166 return (bytesWritten);
169 static int
170 file_close(struct archive *a, void *client_data)
172 struct write_file_data *mine = (struct write_file_data *)client_data;
174 (void)a; /* UNUSED */
175 if (mine->filename[0] != '\0')
176 close(mine->fd);
177 free(mine);
178 return (ARCHIVE_OK);