STATIC int
xfs_file_readdir(
struct file *file,
struct dir_context *ctx)
{
struct inode *inode = file_inode(file);
xfs_inode_t *ip = XFS_I(inode);
size_t bufsize;
/*
* The Linux API doesn't pass down the total size of the buffer
* we read into down to the filesystem. With the filldir concept
* it's not needed for correct information, but the XFS dir2 leaf
* code wants an estimate of the buffer size to calculate it's
* readahead window and size the buffers used for mapping to
* physical blocks.
*
* Try to give it an estimate that's good enough, maybe at some
* point we can change the ->readdir prototype to include the
* buffer size. For now we use the current glibc buffer size.
*/
bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size);
return xfs_readdir(NULL, ip, ctx, bufsize);
}
void copy_tree(xfs_mount_t *mp, char *parent, char *local, xfs_inode_t *inode) {
xfs_off_t ofs;
int r, fd;
struct filldir_data filldata;
char *buffer[BUFSIZE];
off_t offset;
if (xfs_is_dir(inode)) {
mkdir(local, 0770);
filldata.mp = mp;
filldata.base = parent;
filldata.local = local;
ofs = 0;
r = xfs_readdir(inode, (void *)&filldata, 102400, &ofs, copy_filldir);
if (r != 0) {
printf("Not a directory\n");
}
} else if (!xfs_is_link(inode)) {
r = 10;
offset = 0;
fd = open(local, O_WRONLY|O_CREAT, 0660);
if (fd < 0) {
printf("Failed to open local file\n");
} else {
while (r) {
r = xfs_readfile(inode, buffer, offset, BUFSIZE, NULL);
if (r) {
write(fd, buffer, r);
offset += r;
}
}
}
close(fd);
}
}
STATIC int
xfs_file_readdir(
struct file *filp,
void *dirent,
filldir_t filldir)
{
struct inode *inode = filp->f_path.dentry->d_inode;
xfs_inode_t *ip = XFS_I(inode);
int error;
size_t bufsize;
/*
* The Linux API doesn't pass down the total size of the buffer
* we read into down to the filesystem. With the filldir concept
* it's not needed for correct information, but the XFS dir2 leaf
* code wants an estimate of the buffer size to calculate it's
* readahead window and size the buffers used for mapping to
* physical blocks.
*
* Try to give it an estimate that's good enough, maybe at some
* point we can change the ->readdir prototype to include the
* buffer size. For now we use the current glibc buffer size.
*/
bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size);
error = xfs_readdir(ip, dirent, bufsize,
(xfs_off_t *)&filp->f_pos, filldir);
if (error)
return -error;
return 0;
}
static int fuse_xfs_readdir(const char *path, void *buf, //fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi) {
log_debug("readdir %s\n", path);
int r;
struct filler_info_struct filler_info;
xfs_inode_t *inode=NULL;
r = find_path(current_xfs_mount(), path, &inode);
if (r) {
return -ENOENT;
}
filler_info.buf = buf;
//filler_info.filler = filler;
xfs_readdir(inode, (void *)&filler_info, 1024000, &offset, fuse_xfs_filldir);
libxfs_iput(inode, 0);
return 0;
}
STATIC int
xfs_file_readdir(
struct file *filp,
void *dirent,
filldir_t filldir)
{
struct inode *inode = filp->f_path.dentry->d_inode;
xfs_inode_t *ip = XFS_I(inode);
int error;
size_t bufsize;
bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size);
error = xfs_readdir(ip, dirent, bufsize,
(xfs_off_t *)&filp->f_pos, filldir);
if (error)
return -error;
return 0;
}
char *fetchline(xfs_mount_t *mp, char *path) {
xfs_inode_t *inode;
xfs_off_t ofs = 0;
char *line;
int r;
free_completions();
r = find_path(mp, path, &inode);
if (r == 0) {
r = xfs_readdir(inode, NULL, 102400, &ofs, cli_complete_xfs_filldir);
libxfs_iput(inode, 0);
}
rl_completion_entry_function = (Function *)dir_generator;
rl_bind_key('\t', rl_complete);
line = readline(get_prompt(path));
if (line && *line)
add_history(line);
return line;
}
STATIC int
xfs_file_readdir(
struct file *filp,
void *dirent,
filldir_t filldir)
{
struct inode *inode = filp->f_path.dentry->d_inode;
xfs_inode_t *ip = XFS_I(inode);
struct hack_callback buf;
struct hack_dirent *de;
int error;
loff_t size;
int eof = 0;
xfs_off_t start_offset, curr_offset, offset;
/*
* Try fairly hard to get memory
*/
buf.len = PAGE_CACHE_SIZE;
do {
buf.dirent = kmalloc(buf.len, GFP_KERNEL);
if (buf.dirent)
break;
buf.len >>= 1;
} while (buf.len >= 1024);
if (!buf.dirent)
return -ENOMEM;
curr_offset = filp->f_pos;
if (curr_offset == 0x7fffffff)
offset = 0xffffffff;
else
offset = filp->f_pos;
while (!eof) {
unsigned int reclen;
start_offset = offset;
buf.used = 0;
error = -xfs_readdir(ip, &buf, buf.len, &offset,
xfs_hack_filldir);
if (error || offset == start_offset) {
size = 0;
break;
}
size = buf.used;
de = (struct hack_dirent *)buf.dirent;
curr_offset = de->offset /* & 0x7fffffff */;
while (size > 0) {
if (filldir(dirent, de->name, de->namlen,
curr_offset & 0x7fffffff,
de->ino, de->d_type)) {
goto done;
}
reclen = ALIGN(sizeof(struct hack_dirent) + de->namlen,
sizeof(u64));
size -= reclen;
de = (struct hack_dirent *)((char *)de + reclen);
curr_offset = de->offset /* & 0x7fffffff */;
}
}
done:
if (!error) {
if (size == 0)
filp->f_pos = offset & 0x7fffffff;
else if (de)
filp->f_pos = curr_offset;
}
kfree(buf.dirent);
return error;
}
int main(int argc, char *argv[]) {
xfs_mount_t *mp;
xfs_inode_t *inode = NULL;
xfs_off_t ofs;
struct filldir_data filldata;
char *progname;
char *source_name;
int r, fd;
char *line;
char path[FILENAME_MAX] = "/";
char newpath[FILENAME_MAX] = "/";
char *buffer[BUFSIZE];
off_t offset;
if (argc != 2) {
printf("Usage: xfs-cli raw_device\n");
return 1;
}
progname = argv[0];
source_name = argv[1];
mp = mount_xfs(progname, source_name);
if (mp == NULL)
return 1;
while (line == fetchline(mp, path)) {
inode = NULL;
strip(line, ' ');
if (strncmp(line, "cd ", 3) == 0) {
if (strcmp(line+3, "..") == 0) {
goto_parent(path);
} else {
strcpy(newpath, path);
strcat(newpath, line+3);
r = find_path(mp, newpath, &inode);
if ((!r) && (xfs_is_dir(inode))) {
//TODO: check if it is a directory
strcpy(path, newpath);
strcat(path, "/");
printf("%s\n", path);
} else {
if (r) {
printf("No such directory\n");
} else {
printf("Not a directory\n");
}
}
}
}
else if (strcmp(line, "ls") == 0) {
r = find_path(mp, path, &inode);
if (!r) {
//TODO: check if it is a directory
ofs=0;
filldata.mp = mp;
filldata.base = inode;
r = xfs_readdir(inode, (void *)&filldata, 102400, &ofs, cli_ls_xfs_filldir);
if (r != 0) {
printf("Not a directory\n");
}
} else {
printf("No such directory\n");
}
}
else if (strncmp(line, "cat ", 4) == 0) {
strcpy(newpath, path);
strcat(newpath, line+4);
r = find_path(mp, newpath, &inode);
if (r)
printf("File not found\n");
else if (xfs_is_regular(inode)) {
//TODO: check if it is a file
r = 10;
offset = 0;
while (r) {
r = xfs_readfile(inode, buffer, offset, BUFSIZE, NULL);
if (r) {
write(1, buffer, r);
offset += r;
}
}
} else if (xfs_is_link(inode)) {
r = 10;
offset = 0;
while (r) {
r = xfs_readlink(inode, buffer, offset, BUFSIZE, NULL);
if (r) {
write(1, buffer, r);
offset += r;
}
}
} else {
printf("Not a regular file\n");
}
}
else if (strncmp(line, "get ", 4) == 0) {
strcpy(newpath, path);
strcat(newpath, line+4);
r = find_path(mp, newpath, &inode);
if ((!r) && (xfs_is_regular(inode))) {
//TODO: check if it is a file
r = 10;
offset = 0;
fd = open(line+4, O_WRONLY|O_CREAT, 0660);
if (fd < 0) {
printf("Failed to open local file\n");
} else {
while (r) {
r = xfs_readfile(inode, buffer, offset, BUFSIZE, NULL);
if (r) {
write(fd, buffer, r);
offset += r;
}
}
close(fd);
printf("Retrieved %ld bytes\n", offset);
}
} else {
if (r)
printf("File not found\n");
else
printf("Not a regular file\n");
}
}
else if (strcmp(line, "exit") == 0) {
libxfs_umount(mp);
return 0;
}
else if (strcmp(line, "pwd") == 0) {
printf("%s\n", path);
} else {
printf("Unknown command\n");
}
free(line);
if (inode) {
libxfs_iput(inode, 0);
}
}
libxfs_umount(mp);
return 0;
}
