164 lines
3.9 KiB
C
164 lines
3.9 KiB
C
/*-
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* Copyright (c) 2007 Joerg Sonnenberger <joerg@NetBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <nbcompat.h>
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_ERR_H
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#include <err.h>
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#endif
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#if HAVE_PWD_H
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#include <grp.h>
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#endif
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#if HAVE_PWD_H
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#include <pwd.h>
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#endif
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#if HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#if HAVE_TIME_H
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#include <time.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#include "lib.h"
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#include "create.h"
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static void
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update_ids(struct memory_file *file)
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{
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if (file->owner != NULL) {
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uid_t uid;
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if (uid_from_user(file->owner, &uid) == -1)
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errx(2, "user %s unknown", file->owner);
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file->st.st_uid = uid;
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} else {
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file->owner = user_from_uid(file->st.st_uid, 1);
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}
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if (file->group != NULL) {
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gid_t gid;
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if (gid_from_group(file->group, &gid) == -1)
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errx(2, "group %s unknown", file->group);
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file->group = file->group;
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file->st.st_gid = gid;
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} else {
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file->group = group_from_gid(file->st.st_gid, 1);
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}
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}
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struct memory_file *
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make_memory_file(const char *archive_name, void *data, size_t len,
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const char *owner, const char *group, mode_t mode)
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{
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struct memory_file *file;
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file = xmalloc(sizeof(*file));
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file->name = archive_name;
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file->owner = owner;
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file->group = group;
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file->data = data;
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file->len = len;
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memset(&file->st, 0, sizeof(file->st));
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file->st.st_atime = file->st.st_ctime = file->st.st_mtime = time(NULL);
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file->st.st_nlink = 1;
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file->st.st_size = len;
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file->st.st_mode = mode | S_IFREG;
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update_ids(file);
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return file;
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}
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struct memory_file *
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load_memory_file(const char *disk_name,
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const char *archive_name, const char *owner, const char *group,
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mode_t mode)
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{
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struct memory_file *file;
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int fd;
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file = xmalloc(sizeof(*file));
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file->name = archive_name;
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file->owner = owner;
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file->group = group;
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file->mode = mode;
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fd = open(disk_name, O_RDONLY);
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if (fd == -1)
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err(2, "cannot open file %s", disk_name);
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if (fstat(fd, &file->st) == -1)
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err(2, "cannot stat file %s", disk_name);
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update_ids(file);
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if ((file->st.st_mode & S_IFMT) != S_IFREG)
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errx(1, "meta data file %s is not regular file", disk_name);
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if (file->st.st_size > SSIZE_MAX)
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errx(2, "meta data file too large: %s", disk_name);
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file->data = xmalloc(file->st.st_size);
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if (read(fd, file->data, file->st.st_size) != file->st.st_size)
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err(2, "cannot read file into memory %s", disk_name);
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file->len = file->st.st_size;
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close(fd);
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return file;
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}
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void
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free_memory_file(struct memory_file *file)
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{
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if (file != NULL) {
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free(file->data);
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free(file);
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}
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}
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