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author | kientzle <kientzle@FreeBSD.org> | 2004-04-05 21:12:29 +0000 |
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committer | kientzle <kientzle@FreeBSD.org> | 2004-04-05 21:12:29 +0000 |
commit | 775d07093eb7dc5701457147a8404f0eae443538 (patch) | |
tree | 65c99eaf5f048beaa6a7d9973eb8410048b1f15d /lib/libarchive/archive_write_open_fd.c | |
parent | 74cf37bd00b1e09a0b991b7b1edd335d8e0c2355 (diff) | |
download | FreeBSD-src-775d07093eb7dc5701457147a8404f0eae443538.zip FreeBSD-src-775d07093eb7dc5701457147a8404f0eae443538.tar.gz |
Overhauled ACL support. This makes us compatible
with 'star' ACL handling, though there's still a
bit more work needed in this area.
Added 'write_open_fd' and 'read_open_fd' to simplify, e.g.,
tar's u and r modes. Eliminated old 'write_open_file_position'
as a bad idea. (It required closing/reopening files to
do updates, which led to unpleasant implications.)
Various other minor fixes, API tweaks, etc.
Diffstat (limited to 'lib/libarchive/archive_write_open_fd.c')
-rw-r--r-- | lib/libarchive/archive_write_open_fd.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/lib/libarchive/archive_write_open_fd.c b/lib/libarchive/archive_write_open_fd.c new file mode 100644 index 0000000..33e7f45 --- /dev/null +++ b/lib/libarchive/archive_write_open_fd.c @@ -0,0 +1,121 @@ +/*- + * Copyright (c) 2003-2004 Tim Kientzle + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "archive_platform.h" +__FBSDID("$FreeBSD$"); + +#include <sys/stat.h> +#ifdef HAVE_DMALLOC +#include <dmalloc.h> +#endif +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "archive.h" +#include "archive_private.h" + +struct write_fd_data { + off_t offset; + int fd; +}; + +static int file_close(struct archive *, void *); +static int file_open(struct archive *, void *); +static ssize_t file_write(struct archive *, void *, void *buff, size_t); + +int +archive_write_open_fd(struct archive *a, int fd) +{ + struct write_fd_data *mine; + + mine = malloc(sizeof(*mine)); + if (mine == NULL) { + archive_set_error(a, ENOMEM, "No memory"); + return (ARCHIVE_FATAL); + } + mine->fd = fd; + return (archive_write_open(a, mine, + file_open, file_write, file_close)); +} + +static int +file_open(struct archive *a, void *client_data) +{ + struct write_fd_data *mine; + struct stat st; + + mine = client_data; + + /* + * If client hasn't explicitly set the last block handling, + * then set it here: If the output is a block or character + * device, pad the last block, otherwise leave it unpadded. + */ + if (mine->fd >= 0 && a->bytes_in_last_block < 0) { + /* Last block will be fully padded. */ + fstat(mine->fd, &st); + if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) || + S_ISFIFO(st.st_mode)) + archive_write_set_bytes_in_last_block(a, 0); + else + archive_write_set_bytes_in_last_block(a, 1); + } + + if (mine->fd == 1) { + if (a->bytes_in_last_block < 0) /* Still default? */ + /* Last block will be fully padded. */ + archive_write_set_bytes_in_last_block(a, 0); + } + + if (mine->fd < 0) { + archive_set_error(a, errno, "Failed to open"); + return (ARCHIVE_FATAL); + } + + return (ARCHIVE_OK); +} + +static ssize_t +file_write(struct archive *a, void *client_data, void *buff, size_t length) +{ + struct write_fd_data *mine; + + (void)a; /* UNUSED */ + mine = client_data; + return (write(mine->fd, buff, length)); +} + +static int +file_close(struct archive *a, void *client_data) +{ + struct write_fd_data *mine = client_data; + + (void)a; /* UNUSED */ + free(mine); + return (ARCHIVE_OK); +} |