int shfs_write(shfs_ino_t *file, shbuf_t *buff)
{
shfs_ino_t *aux;
int format;
int err;
if (!file)
return (SHERR_INVAL);
err = 0;
format = shfs_format(file);
if (!buff)
return (SHERR_INVAL); /* presume user wants to erase content. */
if (shfs_attr(file) & SHATTR_DB)
format = SHINODE_DATABASE;
switch (format) {
case SHINODE_REFERENCE:
err = shfs_ref_write(file, buff);
break;
case SHINODE_EXTERNAL:
err = shfs_ext_write(file, buff);
break;
case SHINODE_COMPRESS:
err = shfs_zlib_write(file, buff);
break;
case SHINODE_DATABASE:
err = shfs_db_write(file, buff);
break;
case SHINODE_DIRECTORY:
err = shfs_attr_set(file, SHATTR_ARCH);
if (err)
break;
err = shfs_arch_write(file, buff);
break;
default:
err = shfs_bin_write(file, buff);
break;
}
if (!err)
err = shfs_inode_write_entity(file);
if (!err && (file->blk.hdr.attr & SHATTR_SYNC))
shfs_file_notify(file);
return (err);
}
int shfs_cred_remove(shfs_ino_t *file, shkey_t *key)
{
shfs_ino_t *cred;
char key_buf[MAX_SHARE_HASH_LENGTH];
int err;
memset(key_buf, 0, sizeof(key_buf));
sprintf(key_buf, "%s", shkey_hex(key));
cred = shfs_inode(file, key_buf, SHINODE_ACCESS);
if (!cred)
return (SHERR_IO);
if (shfs_format(cred) != SHINODE_ACCESS)
return (0); /* done */
err = shfs_inode_clear(cred);
if (err)
return (err);
return (0);
}
int _shfs_ref_raw_read(shfs_ino_t *file, shbuf_t *buff)
{
shfs_ino_t *inode;
int err;
if (!file)
return (SHERR_INVAL);
if (shfs_format(file) != SHINODE_REFERENCE)
return (SHERR_INVAL);
inode = shfs_inode(file, NULL, SHINODE_REFERENCE);
if (!inode)
return (SHERR_IO);
if (inode->blk.hdr.size < (sizeof(shpeer_t) + sizeof(shkey_t)) ||
inode->blk.hdr.size > SHFS_BLOCK_DATA_SIZE)
return (SHERR_IO);
shbuf_cat(buff, (char *)inode->blk.raw, inode->blk.hdr.size);
return (0);
}
int shfs_truncate(shfs_ino_t *file, shsize_t len)
{
shfs_ino_t *bin;
shfs_ino_t *aux;
int err;
if (!file)
return (0);
if (!IS_INODE_CONTAINER(shfs_type(file)))
return (SHERR_INVAL); /* see shfs_inode_truncate() */
switch (shfs_format(file)) {
case SHINODE_NULL:
return (SHERR_NOENT); /* no data content */
case SHINODE_BINARY:
bin = shfs_inode(file, NULL, SHINODE_BINARY);
err = shfs_inode_truncate(bin, len);
if (err)
return (err);
/* update file inode attributes */
file->blk.hdr.mtime = bin->blk.hdr.mtime;
file->blk.hdr.size = bin->blk.hdr.size;
file->blk.hdr.crc = bin->blk.hdr.crc;
err = shfs_inode_write_entity(file);
if (err)
return (err);
break;
default:
return (SHERR_OPNOTSUPP);
}
return (0);
}
int shfs_ext_write(shfs_ino_t *file, shbuf_t *buff)
{
shfs_ino_t *ext;
char *path;
int err;
if (file == NULL)
return (SHERR_INVAL);
if (shfs_format(file) != SHINODE_EXTERNAL)
return (SHERR_INVAL);
ext = shfs_inode(file, NULL, SHINODE_EXTERNAL);
if (!ext)
return (SHERR_IO);
path = (char *)ext->blk.raw;
err = shfs_mem_write(path, buff);
if (err)
return (err);
return (0);
}
int shfs_attr_set(shfs_ino_t *file, int attr)
{
shfs_attr_t cur_flag;
shmime_t *mime;
int err_code;
if (!file || !attr)
return (SHERR_INVAL);
cur_flag = shfs_attr(file);
if (cur_flag & attr)
return (0); /* already set */
err_code = SHERR_OPNOTSUPP;
switch (attr) {
case SHATTR_ARCH:
if (shfs_type(file) == SHINODE_DIRECTORY) {
err_code = 0;
}
break;
case SHATTR_COMP:
if (shfs_type(file) == SHINODE_DIRECTORY) {
/* files inherit */
err_code = 0;
break;
}
err_code = shfs_format_set(file, SHINODE_COMPRESS);
break;
case SHATTR_SYNC:
err_code = 0;
//err_code = shfs_file_notify(file);
break;
case SHATTR_TEMP:
err_code = 0;
break;
case SHATTR_VER:
err_code = shfs_rev_init(file);
break;
case SHATTR_READ:
case SHATTR_WRITE:
case SHATTR_EXE:
err_code = 0;
break;
case SHATTR_DB:
if (shfs_type(file) != SHINODE_FILE ||
shfs_format(file) != SHINODE_NULL) {
/* not a file or already contains content */
err_code = SHERR_INVAL;
break;
}
err_code = 0;
#if 0
err_code = shfs_format_set(file, SHINODE_DATABASE);
#endif
#if 0
if (shfs_size(file) == 0) {
/* new database. */
err_code = 0;
}
mime = shmime_file(file);
if (!mime || 0 == strcmp(mime->mime_name, SHMIME_APP_SQLITE)) {
err_code = SHERR_INVAL;
break;
}
/* DEBUG: move to copy file area */
#endif
break;
}
if (!err_code) {
file->blk.hdr.attr |= attr;
err_code = shfs_inode_write_entity(file);
}
if (!err_code &&
((file->blk.hdr.attr & SHATTR_SYNC) ||
(cur_flag & cur_flag))) {
/* notify share daemon of altered attribute state for synchronized inode. */
shfs_file_notify(file);
}
return (err_code);
}
int shfs_attr_unset(shfs_ino_t *file, int attr)
{
shfs_attr_t cur_attr;
shfs_attr_t new_attr;
int err_code;
int format;
if (!file || !attr)
return (SHERR_INVAL);
cur_attr = shfs_attr(file);
if (!(cur_attr & attr))
return (0); /* already unset */
new_attr = cur_attr;
new_attr &= ~attr;
err_code = SHERR_OPNOTSUPP;
switch (attr) {
case SHATTR_COMP:
err_code = 0;
format = SHINODE_DEFAULT_ATTR_FORMAT(new_attr);
if (format != shfs_format(file))
err_code = shfs_format_set(file, format);
break;
case SHATTR_SYNC:
err_code = 0;
break;
case SHATTR_TEMP:
err_code = 0;
break;
case SHATTR_VER:
err_code = shfs_rev_clear(file);
break;
case SHATTR_LINK:
/* unimplemented. */
err_code = SHERR_OPNOTSUPP;
/* this is now a local copy */
file->blk.hdr.attr &= ~SHATTR_SYNC;
break;
case SHATTR_READ:
case SHATTR_WRITE:
case SHATTR_EXE:
err_code = 0;
break;
case SHATTR_DB:
/* DEBUG: TODO: write file pertaining to original aux contents. */
err_code = 0;
break;
}
if (!err_code) {
file->blk.hdr.attr = new_attr;
err_code = shfs_inode_write_entity(file);
}
if (!err_code && (file->blk.hdr.attr & SHATTR_SYNC))
shfs_file_notify(file);
return (err_code);
}
int shfs_read_of(shfs_ino_t *file, shbuf_t *buff, off_t of, size_t size)
{
shfs_ino_t *aux;
int format;
int err;
if (file == NULL)
return (SHERR_INVAL);
if (shfs_format(file) == SHINODE_NULL)
return (SHERR_NOENT); /* no data content */
if (!buff)
return (0);
err = 0;
format = shfs_format(file);
switch (format) {
case SHINODE_REFERENCE:
err = shfs_ref_read(file, buff);
if (!err) {
/* cheat */
if (of)
shbuf_trim(buff, of);
if (size)
shbuf_truncate(buff, size);
}
break;
case SHINODE_EXTERNAL:
err = shfs_ext_read(file, buff);
if (!err) {
/* cheat */
if (of)
shbuf_trim(buff, of);
if (size)
shbuf_truncate(buff, size);
}
break;
case SHINODE_COMPRESS:
err = shfs_zlib_read(file, buff);
if (!err) {
/* cheat */
if (of)
shbuf_trim(buff, of);
if (size)
shbuf_truncate(buff, size);
}
break;
case SHINODE_DATABASE:
err = shfs_db_read_of(file, buff, of, size);
break;
case SHINODE_BINARY:
err = shfs_bin_read_of(file, buff, of, size);
break;
case SHINODE_DIRECTORY:
if (!(shfs_attr(file) & SHATTR_ARCH))
return (SHERR_ISDIR);
err = shfs_arch_read(file, buff);
if (!err) {
/* cheat */
if (of)
shbuf_trim(buff, of);
if (size)
shbuf_truncate(buff, size);
}
break;
}
return (err);
}
int shfs_file_copy(shfs_ino_t *src_file, shfs_ino_t *dest_file)
{
shfs_t *ref_fs;
shfs_ino_t *ref;
shstat st;
shbuf_t *buff;
int err;
if (!src_file || !dest_file)
return (SHERR_INVAL);
/* ensure there is something to copy */
err = shfs_fstat(src_file, &st);
if (err) {
fprintf(stderr, "DEBUG: shfs_file_copy: %d = shfs_fstat(src_file)\n", err);
return (err);
}
if (shfs_type(dest_file) == SHINODE_DIRECTORY) {
#if 0
/* extract tar archive */
if (shfs_format(dest_file) == SHINODE_BINARY &&
0 == strcmp(shfs_meta_get(dest_file, "content.mime"),
"application/x-tar")) {
buff = shbuf_init();
err = shfs_read(src_file, buff);
if (err) {
shbuf_free(&buff);
return (err);
}
err = shfs_unarch(buff, dest_file);
shbuf_free(&buff);
return (0);
}
#endif
if (!(shfs_attr(src_file) & SHATTR_ARCH)) {
if (IS_INODE_CONTAINER(shfs_type(src_file))) {
dest_file = shfs_inode(dest_file,
shfs_filename(src_file), shfs_type(src_file));
} else {
dest_file = shfs_inode(dest_file, NULL, shfs_type(src_file));
}
}
}
ref = NULL;
ref_fs = NULL;
if (shfs_format(dest_file) == SHINODE_REFERENCE) {
/* apply operation to end-point inode. */
err = shfs_ref_get(dest_file, &ref_fs, &ref);
if (err) {
fprintf(stderr, "DEBUG: shfs_file_copy: %d = shfs_ref_get(dest_file)\n", err);
return (err);
}
dest_file = ref;
}
if (shfs_format(dest_file) != SHINODE_EXTERNAL) {
/* direct copy data content without conversion when applicable. */
switch (shfs_format(src_file)) {
#if 0
case SHINODE_COMPRESS:
err = shfs_zlib_copy(src_file, dest_file);
if (err)
return (err);
return (0);
#endif
}
}
/* default case */
buff = shbuf_init();
err = shfs_read(src_file, buff);
if (err) {
fprintf(stderr, "DEBUG: shfs_file_copy: %d = shfs_read()\n", err);
goto done;
}
err = shfs_write(dest_file, buff);
shbuf_free(&buff);
if (err) {
fprintf(stderr, "DEBUG: shfs_file_copy: %d = shfs_write()\n", err);
goto done;
}
/* success */
err = 0;
done:
shbuf_free(&buff);
if (ref_fs)
shfs_free(&ref_fs);
return (err);
}
int shfs_file_remove(shfs_ino_t *file)
{
shfs_ino_t *child;
shbuf_t *buff;
shfs_dirent_t *ents;
size_t ent_max;
int fmt;
int err;
int i;
if (IS_INODE_CONTAINER(shfs_type(file))) {
ents = NULL;
ent_max = shfs_list(file, NULL, &ents);
if (ent_max < 0) {
return (ent_max);
}
if (ents) {
for (i = 0; i < ent_max; i++) {
if (IS_INODE_CONTAINER(ents[i].d_type)) {
child = shfs_inode(file, ents[i].d_name, ents[i].d_type);
err = shfs_file_remove(child);
if (err)
return (err);
} else {
child = shfs_inode(file, NULL, ents[i].d_type);
shfs_inode_clear(child);
}
}
free(ents);
} else {
/* version repository */
if (shfs_attr(file) & SHATTR_VER) {
child = shfs_inode(file, NULL, SHINODE_REPOSITORY);
err = shfs_file_remove(child);
if (err)
return (err);
}
/* specific format */
fmt = shfs_format(file);
if (fmt == SHINODE_NULL && shfs_type(file) == SHINODE_BINARY) {
fmt = SHINODE_AUX;
}
if (fmt != SHINODE_NULL) {
child = shfs_inode(file, NULL, fmt);
if (!IS_INODE_CONTAINER(shfs_type(child))) {
err = shfs_inode_clear(child);
} else {
err = shfs_file_remove(child);
}
if (err)
return (err);
}
}
}
if (shfs_type(file) != SHINODE_DIRECTORY) {
#if 0
/* DEBUG: perform inode_clear on 'fpos' index */
/* clear previous format */
err = shfs_format_set(file, SHINODE_NULL);
if (err)
return (err);
#endif
/* reset stats on file inode. */
file->blk.hdr.mtime = 0;
file->blk.hdr.size = 0;
// file->blk.hdr.type = SHINODE_NULL;
file->blk.hdr.format = SHINODE_NULL;
file->blk.hdr.attr = SHINODE_NULL;
file->blk.hdr.crc = 0;
err = shfs_inode_write_entity(file);
if (err) {
return (err);
}
}
return (0);
}