Initial commit of the Samsung YP-R0 port.

This port is a hybrid native/RaaA port. It runs on a embedded linux system,
but is the only application. It therefore can implement lots of stuff that
native targets also implement, while leveraging the underlying linux kernel.

The port is quite advanced. User interface, audio playback, plugins work
mostly fine. Missing is e.g. power mangement and USB (see SamsungYPR0 wiki page).

Included in utils/ypr0tools are scripts and programs required to generate
a patched firmware. The patched firmware has the rootfs modified to load
Rockbox. It includes a early/safe USB mode.

This port needs a new toolchain, one that includes glibc headers and libraries.
rockboxdev.sh can generate it, but e.g. codesourcey and distro packages may
also work.

Most of the initial effort is done by Lorenzo Miori and others (on ABI),
including reverse engineering and patching of the original firmware,
initial drivers, and more. Big thanks to you.

Flyspray: FS#12348
Author: Lorenzo Miori, myself

Merry christmas to ypr0 owners! :)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31415 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 716 insertions, 0 deletions

diff --git a/utils/ypr0tools/cramfs-1.1/cramfsck.c b/utils/ypr0tools/cramfs-1.1/cramfsck.c
new file mode 100644
index 0000000000..aef017a4b4
--- /dev/null
+++ b/utils/ypr0tools/cramfs-1.1/cramfsck.c
@@ -0,0 +1,716 @@
+/*
+ * cramfsck - check a cramfs file system
+ *
+ * Copyright (C) 2000-2002 Transmeta Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * 1999/12/03: Linus Torvalds (cramfs tester and unarchive program)
+ * 2000/06/03: Daniel Quinlan (CRC and length checking program)
+ * 2000/06/04: Daniel Quinlan (merged programs, added options, support
+ *                            for special files, preserve permissions and
+ *                            ownership, cramfs superblock v2, bogus mode
+ *                            test, pathname length test, etc.)
+ * 2000/06/06: Daniel Quinlan (support for holes, pretty-printing,
+ *                            symlink size test)
+ * 2000/07/11: Daniel Quinlan (file length tests, start at offset 0 or 512,
+ *                            fsck-compatible exit codes)
+ * 2000/07/15: Daniel Quinlan (initial support for block devices)
+ * 2002/01/10: Daniel Quinlan (additional checks, test more return codes,
+ *                            use read if mmap fails, standardize messages)
+ */
+
+/* compile-time options */
+#define INCLUDE_FS_TESTS        /* include cramfs checking and extraction */
+
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/sysmacros.h>
+#include <utime.h>
+#include <sys/ioctl.h>
+#define _LINUX_STRING_H_
+#include <linux/fs.h>
+#include <linux/cramfs_fs.h>
+#include <zlib.h>
+
+/* Exit codes used by fsck-type programs */
+#define FSCK_OK          0      /* No errors */
+#define FSCK_NONDESTRUCT 1      /* File system errors corrected */
+#define FSCK_REBOOT      2      /* System should be rebooted */
+#define FSCK_UNCORRECTED 4      /* File system errors left uncorrected */
+#define FSCK_ERROR       8      /* Operational error */
+#define FSCK_USAGE       16     /* Usage or syntax error */
+#define FSCK_LIBRARY     128    /* Shared library error */
+
+#define PAD_SIZE 512
+
+#define PAGE_CACHE_SIZE  page_size
+
+static const char *progname = "cramfsck";
+
+static int fd;                  /* ROM image file descriptor */
+static char *filename;          /* ROM image filename */
+struct cramfs_super super;      /* just find the cramfs superblock once */
+static int opt_verbose = 0;     /* 1 = verbose (-v), 2+ = very verbose (-vv) */
+#ifdef INCLUDE_FS_TESTS
+static int opt_extract = 0;             /* extract cramfs (-x) */
+static char *extract_dir = "root";      /* extraction directory (-x) */
+static uid_t euid;                      /* effective UID */
+
+/* (cramfs_super + start) <= start_dir < end_dir <= start_data <= end_data */
+static unsigned long start_dir = ~0UL;  /* start of first non-root inode */
+static unsigned long end_dir = 0;       /* end of the directory structure */
+static unsigned long start_data = ~0UL; /* start of the data (256 MB = max) */
+static unsigned long end_data = 0;      /* end of the data */
+
+/* Guarantee access to at least 8kB at a time */
+#define ROMBUFFER_BITS  13
+#define ROMBUFFERSIZE   (1 << ROMBUFFER_BITS)
+#define ROMBUFFERMASK   (ROMBUFFERSIZE-1)
+static char read_buffer[ROMBUFFERSIZE * 2];
+static unsigned long read_buffer_block = ~0UL;
+
+/* Uncompressing data structures... */
+static char *outbuffer;
+static z_stream stream;
+
+static size_t page_size;
+
+/* Prototypes */
+static void expand_fs(char *, struct cramfs_inode *);
+#endif /* INCLUDE_FS_TESTS */
+
+/* Input status of 0 to print help and exit without an error. */
+static void usage(int status)
+{
+        FILE *stream = status ? stderr : stdout;
+
+        fprintf(stream, "usage: %s [-hv] [-x dir] file\n"
+                " -h         print this help\n"
+                " -x dir     extract into dir\n"
+                " -v         be more verbose\n"
+                " file       file to test\n", progname);
+
+        exit(status);
+}
+
+static void die(int status, int syserr, const char *fmt, ...)
+{
+        va_list arg_ptr;
+        int save = errno;
+
+        fflush(0);
+        va_start(arg_ptr, fmt);
+        fprintf(stderr, "%s: ", progname);
+        vfprintf(stderr, fmt, arg_ptr);
+        if (syserr) {
+                fprintf(stderr, ": %s", strerror(save));
+        }
+        fprintf(stderr, "\n");
+        va_end(arg_ptr);
+        exit(status);
+}
+
+static void test_super(int *start, size_t *length) {
+        struct stat st;
+
+        /* find the physical size of the file or block device */
+        if (stat(filename, &st) < 0) {
+                die(FSCK_ERROR, 1, "stat failed: %s", filename);
+        }
+        fd = open(filename, O_RDONLY);
+        if (fd < 0) {
+                die(FSCK_ERROR, 1, "open failed: %s", filename);
+        }
+        if (S_ISBLK(st.st_mode)) {
+                if (ioctl(fd, BLKGETSIZE, length) < 0) {
+                        die(FSCK_ERROR, 1, "ioctl failed: unable to determine device size: %s", filename);
+                }
+                *length = *length * 512;
+        }
+        else if (S_ISREG(st.st_mode)) {
+                *length = st.st_size;
+        }
+        else {
+                die(FSCK_ERROR, 0, "not a block device or file: %s", filename);
+        }
+
+        if (*length < sizeof(struct cramfs_super)) {
+                die(FSCK_UNCORRECTED, 0, "file length too short");
+        }
+
+        /* find superblock */
+        if (read(fd, &super, sizeof(super)) != sizeof(super)) {
+                die(FSCK_ERROR, 1, "read failed: %s", filename);
+        }
+        if (super.magic == CRAMFS_MAGIC) {
+                *start = 0;
+        }
+        else if (*length >= (PAD_SIZE + sizeof(super))) {
+                lseek(fd, PAD_SIZE, SEEK_SET);
+                if (read(fd, &super, sizeof(super)) != sizeof(super)) {
+                        die(FSCK_ERROR, 1, "read failed: %s", filename);
+                }
+                if (super.magic == CRAMFS_MAGIC) {
+                        *start = PAD_SIZE;
+                }
+        }
+
+        /* superblock tests */
+        if (super.magic != CRAMFS_MAGIC) {
+                die(FSCK_UNCORRECTED, 0, "superblock magic not found");
+        }
+        if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) {
+                die(FSCK_ERROR, 0, "unsupported filesystem features");
+        }
+        if (super.size < PAGE_CACHE_SIZE) {
+                die(FSCK_UNCORRECTED, 0, "superblock size (%d) too small", super.size);
+        }
+        if (super.flags & CRAMFS_FLAG_FSID_VERSION_2) {
+                if (super.fsid.files == 0) {
+                        die(FSCK_UNCORRECTED, 0, "zero file count");
+                }
+                if (*length < super.size) {
+                        die(FSCK_UNCORRECTED, 0, "file length too short");
+                }
+                else if (*length > super.size) {
+                        fprintf(stderr, "warning: file extends past end of filesystem\n");
+                }
+        }
+        else {
+                fprintf(stderr, "warning: old cramfs format\n");
+        }
+}
+
+static void test_crc(int start)
+{
+        void *buf;
+        u32 crc;
+
+        if (!(super.flags & CRAMFS_FLAG_FSID_VERSION_2)) {
+#ifdef INCLUDE_FS_TESTS
+                return;
+#else /* not INCLUDE_FS_TESTS */
+                die(FSCK_USAGE, 0, "unable to test CRC: old cramfs format");
+#endif /* not INCLUDE_FS_TESTS */
+        }
+
+        crc = crc32(0L, Z_NULL, 0);
+
+        buf = mmap(NULL, super.size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+        if (buf == MAP_FAILED) {
+                buf = mmap(NULL, super.size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+                if (buf != MAP_FAILED) {
+                        lseek(fd, 0, SEEK_SET);
+                        read(fd, buf, super.size);
+                }
+        }
+        if (buf != MAP_FAILED) {
+                ((struct cramfs_super *) (buf+start))->fsid.crc = crc32(0L, Z_NULL, 0);
+                crc = crc32(crc, buf+start, super.size-start);
+                munmap(buf, super.size);
+        }
+        else {
+                int retval;
+                size_t length = 0;
+
+                buf = malloc(4096);
+                if (!buf) {
+                        die(FSCK_ERROR, 1, "malloc failed");
+                }
+                lseek(fd, start, SEEK_SET);
+                for (;;) {
+                        retval = read(fd, buf, 4096);
+                        if (retval < 0) {
+                                die(FSCK_ERROR, 1, "read failed: %s", filename);
+                        }
+                        else if (retval == 0) {
+                                break;
+                        }
+                        if (length == 0) {
+                                ((struct cramfs_super *) buf)->fsid.crc = crc32(0L, Z_NULL, 0);
+                        }
+                        length += retval;
+                        if (length > (super.size-start)) {
+                                crc = crc32(crc, buf, retval - (length - (super.size-start)));
+                                break;
+                        }
+                        crc = crc32(crc, buf, retval);
+                }
+                free(buf);
+        }
+
+        if (crc != super.fsid.crc) {
+                die(FSCK_UNCORRECTED, 0, "crc error");
+        }
+}
+
+#ifdef INCLUDE_FS_TESTS
+static void print_node(char type, struct cramfs_inode *i, char *name)
+{
+        char info[10];
+
+        if (S_ISCHR(i->mode) || (S_ISBLK(i->mode))) {
+                /* major/minor numbers can be as high as 2^12 or 4096 */
+                snprintf(info, 10, "%4d,%4d", major(i->size), minor(i->size));
+        }
+        else {
+                /* size be as high as 2^24 or 16777216 */
+                snprintf(info, 10, "%9d", i->size);
+        }
+
+        printf("%c %04o %s %5d:%-3d %s\n",
+               type, i->mode & ~S_IFMT, info, i->uid, i->gid, name);
+}
+
+/*
+ * Create a fake "blocked" access
+ */
+static void *romfs_read(unsigned long offset)
+{
+        unsigned int block = offset >> ROMBUFFER_BITS;
+        if (block != read_buffer_block) {
+                read_buffer_block = block;
+                lseek(fd, block << ROMBUFFER_BITS, SEEK_SET);
+                read(fd, read_buffer, ROMBUFFERSIZE * 2);
+        }
+        return read_buffer + (offset & ROMBUFFERMASK);
+}
+
+static struct cramfs_inode *cramfs_iget(struct cramfs_inode * i)
+{
+        struct cramfs_inode *inode = malloc(sizeof(struct cramfs_inode));
+
+        if (!inode) {
+                die(FSCK_ERROR, 1, "malloc failed");
+        }
+        *inode = *i;
+        return inode;
+}
+
+static struct cramfs_inode *iget(unsigned int ino)
+{
+        return cramfs_iget(romfs_read(ino));
+}
+
+static void iput(struct cramfs_inode *inode)
+{
+        free(inode);
+}
+
+/*
+ * Return the offset of the root directory
+ */
+static struct cramfs_inode *read_super(void)
+{
+        unsigned long offset = super.root.offset << 2;
+
+        if (!S_ISDIR(super.root.mode))
+                die(FSCK_UNCORRECTED, 0, "root inode is not directory");
+        if (!(super.flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) &&
+            ((offset != sizeof(struct cramfs_super)) &&
+             (offset != PAD_SIZE + sizeof(struct cramfs_super))))
+        {
+                die(FSCK_UNCORRECTED, 0, "bad root offset (%lu)", offset);
+        }
+        return cramfs_iget(&super.root);
+}
+
+static int uncompress_block(void *src, int len)
+{
+        int err;
+
+        stream.next_in = src;
+        stream.avail_in = len;
+
+        stream.next_out = (unsigned char *) outbuffer;
+        stream.avail_out = PAGE_CACHE_SIZE*2;
+
+        inflateReset(&stream);
+
+        if (len > PAGE_CACHE_SIZE*2) {
+                die(FSCK_UNCORRECTED, 0, "data block too large");
+        }
+        err = inflate(&stream, Z_FINISH);
+        if (err != Z_STREAM_END) {
+                die(FSCK_UNCORRECTED, 0, "decompression error %p(%d): %s",
+                    zError(err), src, len);
+        }
+        return stream.total_out;
+}
+
+static void do_uncompress(char *path, int fd, unsigned long offset, unsigned long size)
+{
+        unsigned long curr = offset + 4 * ((size + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE);
+
+        do {
+                unsigned long out = PAGE_CACHE_SIZE;
+                unsigned long next = *(u32 *) romfs_read(offset);
+
+                if (next > end_data) {
+                        end_data = next;
+                }
+
+                offset += 4;
+                if (curr == next) {
+                        if (opt_verbose > 1) {
+                                printf("  hole at %ld (%d)\n", curr, PAGE_CACHE_SIZE);
+                        }
+                        if (size < PAGE_CACHE_SIZE)
+                                out = size;
+                        memset(outbuffer, 0x00, out);
+                }
+                else {
+                        if (opt_verbose > 1) {
+                                printf("  uncompressing block at %ld to %ld (%ld)\n", curr, next, next - curr);
+                        }
+                        out = uncompress_block(romfs_read(curr), next - curr);
+                }
+                if (size >= PAGE_CACHE_SIZE) {
+                        if (out != PAGE_CACHE_SIZE) {
+                                die(FSCK_UNCORRECTED, 0, "non-block (%ld) bytes", out);
+                        }
+                } else {
+                        if (out != size) {
+                                die(FSCK_UNCORRECTED, 0, "non-size (%ld vs %ld) bytes", out, size);
+                        }
+                }
+                size -= out;
+                if (opt_extract) {
+                        if (write(fd, outbuffer, out) < 0) {
+                                die(FSCK_ERROR, 1, "write failed: %s", path);
+                        }
+                }
+                curr = next;
+        } while (size);
+}
+
+static void change_file_status(char *path, struct cramfs_inode *i)
+{
+        struct utimbuf epoch = { 0, 0 };
+
+        if (euid == 0) {
+                if (lchown(path, i->uid, i->gid) < 0) {
+                        die(FSCK_ERROR, 1, "lchown failed: %s", path);
+                }
+                if (S_ISLNK(i->mode))
+                        return;
+                if ((S_ISUID | S_ISGID) & i->mode) {
+                        if (chmod(path, i->mode) < 0) {
+                                die(FSCK_ERROR, 1, "chown failed: %s", path);
+                        }
+                }
+        }
+        if (S_ISLNK(i->mode))
+                return;
+        if (utime(path, &epoch) < 0) {
+                die(FSCK_ERROR, 1, "utime failed: %s", path);
+        }
+}
+
+static void do_directory(char *path, struct cramfs_inode *i)
+{
+        int pathlen = strlen(path);
+        int count = i->size;
+        unsigned long offset = i->offset << 2;
+        char *newpath = malloc(pathlen + 256);
+
+        if (!newpath) {
+                die(FSCK_ERROR, 1, "malloc failed");
+        }
+        if (offset == 0 && count != 0) {
+                die(FSCK_UNCORRECTED, 0, "directory inode has zero offset and non-zero size: %s", path);
+        }
+        if (offset != 0 && offset < start_dir) {
+                start_dir = offset;
+        }
+        /* TODO: Do we need to check end_dir for empty case? */
+        memcpy(newpath, path, pathlen);
+        newpath[pathlen] = '/';
+        pathlen++;
+        if (opt_verbose) {
+                print_node('d', i, path);
+        }
+        if (opt_extract) {
+                if (mkdir(path, i->mode) < 0) {
+                        die(FSCK_ERROR, 1, "mkdir failed: %s", path);
+                }
+                change_file_status(path, i);
+        }
+        while (count > 0) {
+                struct cramfs_inode *child = iget(offset);
+                int size;
+                int newlen = child->namelen << 2;
+
+                size = sizeof(struct cramfs_inode) + newlen;
+                count -= size;
+
+                offset += sizeof(struct cramfs_inode);
+
+                memcpy(newpath + pathlen, romfs_read(offset), newlen);
+                newpath[pathlen + newlen] = 0;
+                if (newlen == 0) {
+                        die(FSCK_UNCORRECTED, 0, "filename length is zero");
+                }
+                if ((pathlen + newlen) - strlen(newpath) > 3) {
+                        die(FSCK_UNCORRECTED, 0, "bad filename length");
+                }
+                expand_fs(newpath, child);
+
+                offset += newlen;
+
+                if (offset <= start_dir) {
+                        die(FSCK_UNCORRECTED, 0, "bad inode offset");
+                }
+                if (offset > end_dir) {
+                        end_dir = offset;
+                }
+                iput(child); /* free(child) */
+        }
+        free(newpath);
+}
+
+static void do_file(char *path, struct cramfs_inode *i)
+{
+        unsigned long offset = i->offset << 2;
+        int fd = 0;
+
+        if (offset == 0 && i->size != 0) {
+                die(FSCK_UNCORRECTED, 0, "file inode has zero offset and non-zero size");
+        }
+        if (i->size == 0 && offset != 0) {
+                die(FSCK_UNCORRECTED, 0, "file inode has zero size and non-zero offset");
+        }
+        if (offset != 0 && offset < start_data) {
+                start_data = offset;
+        }
+        if (opt_verbose) {
+                print_node('f', i, path);
+        }
+        if (opt_extract) {
+                fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, i->mode);
+                if (fd < 0) {
+                        die(FSCK_ERROR, 1, "open failed: %s", path);
+                }
+        }
+        if (i->size) {
+                do_uncompress(path, fd, offset, i->size);
+        }
+        if (opt_extract) {
+                close(fd);
+                change_file_status(path, i);
+        }
+}
+
+static void do_symlink(char *path, struct cramfs_inode *i)
+{
+        unsigned long offset = i->offset << 2;
+        unsigned long curr = offset + 4;
+        unsigned long next = *(u32 *) romfs_read(offset);
+        unsigned long size;
+
+        if (offset == 0) {
+                die(FSCK_UNCORRECTED, 0, "symbolic link has zero offset");
+        }
+        if (i->size == 0) {
+                die(FSCK_UNCORRECTED, 0, "symbolic link has zero size");
+        }
+
+        if (offset < start_data) {
+                start_data = offset;
+        }
+        if (next > end_data) {
+                end_data = next;
+        }
+
+        size = uncompress_block(romfs_read(curr), next - curr);
+        if (size != i->size) {
+                die(FSCK_UNCORRECTED, 0, "size error in symlink: %s", path);
+        }
+        outbuffer[size] = 0;
+        if (opt_verbose) {
+                char *str;
+
+                asprintf(&str, "%s -> %s", path, outbuffer);
+                print_node('l', i, str);
+                if (opt_verbose > 1) {
+                        printf("  uncompressing block at %ld to %ld (%ld)\n", curr, next, next - curr);
+                }
+                free(str);
+        }
+        if (opt_extract) {
+                if (symlink(outbuffer, path) < 0) {
+                        die(FSCK_ERROR, 1, "symlink failed: %s", path);
+                }
+                change_file_status(path, i);
+        }
+}
+
+static void do_special_inode(char *path, struct cramfs_inode *i)
+{
+        dev_t devtype = 0;
+        char type;
+
+        if (i->offset) {        /* no need to shift offset */
+                die(FSCK_UNCORRECTED, 0, "special file has non-zero offset: %s", path);
+        }
+        if (S_ISCHR(i->mode)) {
+                devtype = i->size;
+                type = 'c';
+        }
+        else if (S_ISBLK(i->mode)) {
+                devtype = i->size;
+                type = 'b';
+        }
+        else if (S_ISFIFO(i->mode)) {
+                if (i->size != 0) {
+                        die(FSCK_UNCORRECTED, 0, "fifo has non-zero size: %s", path);
+                }
+                type = 'p';
+        }
+        else if (S_ISSOCK(i->mode)) {
+                if (i->size != 0) {
+                        die(FSCK_UNCORRECTED, 0, "socket has non-zero size: %s", path);
+                }
+                type = 's';
+        }
+        else {
+                die(FSCK_UNCORRECTED, 0, "bogus mode: %s (%o)", path, i->mode);
+                return;         /* not reached */
+        }
+
+        if (opt_verbose) {
+                print_node(type, i, path);
+        }
+
+        if (opt_extract) {
+                if (mknod(path, i->mode, devtype) < 0) {
+                        die(FSCK_ERROR, 1, "mknod failed: %s", path);
+                }
+                change_file_status(path, i);
+        }
+}
+
+static void expand_fs(char *path, struct cramfs_inode *inode)
+{
+        if (S_ISDIR(inode->mode)) {
+                do_directory(path, inode);
+        }
+        else if (S_ISREG(inode->mode)) {
+                do_file(path, inode);
+        }
+        else if (S_ISLNK(inode->mode)) {
+                do_symlink(path, inode);
+        }
+        else {
+                do_special_inode(path, inode);
+        }
+}
+
+static void test_fs(int start)
+{
+        struct cramfs_inode *root;
+
+        root = read_super();
+        umask(0);
+        euid = geteuid();
+        stream.next_in = NULL;
+        stream.avail_in = 0;
+        inflateInit(&stream);
+        expand_fs(extract_dir, root);
+        inflateEnd(&stream);
+        if (start_data != ~0UL) {
+                if (start_data < (sizeof(struct cramfs_super) + start)) {
+                        die(FSCK_UNCORRECTED, 0, "directory data start (%ld) < sizeof(struct cramfs_super) + start (%ld)", start_data, sizeof(struct cramfs_super) + start);
+                }
+                if (end_dir != start_data) {
+                        die(FSCK_UNCORRECTED, 0, "directory data end (%ld) != file data start (%ld)", end_dir, start_data);
+                }
+        }
+        if (super.flags & CRAMFS_FLAG_FSID_VERSION_2) {
+                if (end_data > super.size) {
+                        die(FSCK_UNCORRECTED, 0, "invalid file data offset");
+                }
+        }
+        iput(root);             /* free(root) */
+}
+#endif /* INCLUDE_FS_TESTS */
+
+int main(int argc, char **argv)
+{
+        int c;                  /* for getopt */
+        int start = 0;
+        size_t length;
+
+        page_size = sysconf(_SC_PAGESIZE);
+
+        if (argc)
+                progname = argv[0];
+
+        outbuffer = malloc(page_size * 2);
+        if (!outbuffer)
+                die(FSCK_ERROR, 1, "failed to allocate outbuffer");
+
+        /* command line options */
+        while ((c = getopt(argc, argv, "hx:v")) != EOF) {
+                switch (c) {
+                case 'h':
+                        usage(FSCK_OK);
+                case 'x':
+#ifdef INCLUDE_FS_TESTS
+                        opt_extract = 1;
+                        extract_dir = optarg;
+                        break;
+#else /* not INCLUDE_FS_TESTS */
+                        die(FSCK_USAGE, 0, "compiled without -x support");
+#endif /* not INCLUDE_FS_TESTS */
+                case 'v':
+                        opt_verbose++;
+                        break;
+                }
+        }
+
+        if ((argc - optind) != 1)
+                usage(FSCK_USAGE);
+        filename = argv[optind];
+
+        test_super(&start, &length);
+        test_crc(start);
+#ifdef INCLUDE_FS_TESTS
+        test_fs(start);
+#endif /* INCLUDE_FS_TESTS */
+
+        if (opt_verbose) {
+                printf("%s: OK\n", filename);
+        }
+
+        exit(FSCK_OK);
+}
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */