static int iconv_read_buf(const char *path, struct fuse_bufvec **bufp,
size_t size, off_t offset, struct fuse_file_info *fi)
{
struct iconv *ic = iconv_get();
char *newpath;
int err = iconv_convpath(ic, path, &newpath, 0);
if (!err) {
err = fuse_fs_read_buf(ic->next, newpath, bufp, size, offset, fi);
free(newpath);
}
return err;
}
static int subdir_read_buf(const char *path, struct fuse_bufvec **bufp,
size_t size, off_t offset, struct fuse_file_info *fi)
{
struct subdir *d = subdir_get();
char *newpath;
int err = subdir_addpath(d, path, &newpath);
if (!err) {
err = fuse_fs_read_buf(d->next, newpath, bufp, size, offset, fi);
free(newpath);
}
return err;
}
static int
volicon_read_buf(const char *path, struct fuse_bufvec **bufp, size_t size,
off_t offset, struct fuse_file_info *fi)
{
int res = 0;
if (volicon_is_icon_magic_file(path)) {
struct fuse_bufvec *buf;
void *mem;
size_t a_size;
buf = malloc(sizeof(struct fuse_bufvec));
if (buf == NULL) {
return -ENOMEM;
}
if ((offset + size) <= volicon_get()->volicon_size) {
a_size = size;
} else if (offset < volicon_get()->volicon_size) {
a_size = volicon_get()->volicon_size - offset;
} else {
a_size = 0;
}
mem = malloc(a_size);
if (mem == NULL) {
free(buf);
return -ENOMEM;
}
memcpy(mem, (char *)(volicon_get()->volicon_data) + offset,
a_size);
*buf = FUSE_BUFVEC_INIT(size);
buf->buf[0].mem = mem;
buf->buf[0].size = a_size;
*bufp = buf;
} else {
res = fuse_fs_read_buf(volicon_get()->next, path, bufp, size,
offset, fi);
}
return res;
}
