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/*
* Copyright (c) 2014 Dave Vasilevsky <dave@vasilevsky.ca>
* 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.
* 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 "util.h"
#include "fs.h"
#include <stdio.h>
#ifdef _WIN32
#include <win32.h>
sqfs_err sqfs_fd_open(const char *path, sqfs_fd_t *fd, bool print) {
*fd = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (*fd != INVALID_HANDLE_VALUE)
return SQFS_OK;
// FIXME: Better error handling
if (print)
fprintf(stderr, "CreateFile error: %d\n", GetLastError());
return SQFS_ERR;
}
void sqfs_fd_close(sqfs_fd_t fd) {
CloseHandle(fd);
}
#else
#include <fcntl.h>
#include <unistd.h>
sqfs_err sqfs_fd_open(const char *path, sqfs_fd_t *fd, bool print) {
*fd = open(path, O_RDONLY);
if (*fd != -1)
return SQFS_OK;
if (print)
perror("Can't open squashfs image");
return SQFS_ERR;
}
void sqfs_fd_close(sqfs_fd_t fd) {
close(fd);
}
#endif
/* TODO: WIN32 implementation of open/close */
/* TODO: i18n of error messages */
sqfs_err sqfs_open_image_with_subdir(sqfs *fs, const char *image, size_t offset, const char *subdir) {
sqfs_err err;
sqfs_fd_t fd;
if ((err = sqfs_fd_open(image, &fd, stderr)))
return err;
err = sqfs_init_with_subdir(fs, fd, offset, subdir);
switch (err) {
case SQFS_OK:
break;
case SQFS_BADFORMAT:
fprintf(stderr, "This doesn't look like a squashfs image.\n");
break;
case SQFS_BADVERSION: {
int major, minor, mj1, mn1, mj2, mn2;
sqfs_version(fs, &major, &minor);
sqfs_version_supported(&mj1, &mn1, &mj2, &mn2);
fprintf(stderr, "Squashfs version %d.%d detected, only version",
major, minor);
if (mj1 == mj2 && mn1 == mn2)
fprintf(stderr, " %d.%d", mj1, mn1);
else
fprintf(stderr, "s %d.%d to %d.%d", mj1, mn1, mj2, mn2);
fprintf(stderr, " supported.\n");
break;
}
case SQFS_BADCOMP: {
bool first = true;
int i;
sqfs_compression_type sup[SQFS_COMP_MAX],
comp = sqfs_compression(fs);
sqfs_compression_supported(sup);
fprintf(stderr, "Squashfs image uses %s compression, this version "
"supports only ", sqfs_compression_name(comp));
for (i = 0; i < SQFS_COMP_MAX; ++i) {
if (sup[i] == SQFS_COMP_UNKNOWN)
continue;
if (!first)
fprintf(stderr, ", ");
fprintf(stderr, "%s", sqfs_compression_name(sup[i]));
first = false;
}
fprintf(stderr, ".\n");
break;
}
default:
fprintf(stderr, "Something went wrong trying to read the squashfs "
"image.\n");
}
if (err)
sqfs_fd_close(fd);
return err;
}
sqfs_err sqfs_open_image(sqfs *fs, const char *image, size_t offset) {
return sqfs_open_image_with_subdir(fs, image, offset, NULL);
}
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