// stat a file--build a manifest request, and set its mode
// return 0 on success
// return -ESTALE if the inode is not local
// return -ENOENT if we don't have it
// return -ENOMEM on OOM
// return -errno on error
static int UG_impl_stat( struct SG_gateway* gateway, struct SG_request_data* reqdat, struct SG_request_data* entity_info, mode_t* mode, void* cls ) {
int rc = 0;
struct UG_state* ug = (struct UG_state*)SG_gateway_cls( gateway );
struct md_entry ent_info;
rc = UG_stat_raw( ug, reqdat->fs_path, &ent_info );
if( rc != 0 ) {
SG_error("UG_stat_raw('%s') rc = %d\n", reqdat->fs_path, rc );
return rc;
}
if( ent_info.coordinator != SG_gateway_id( gateway ) ) {
// not ours
SG_error("Not the coordinator of '%s' (it is now %" PRIu64 ")\n", reqdat->fs_path, ent_info.coordinator );
md_entry_free( &ent_info );
return -ESTALE;
}
if( mode != NULL ) {
*mode = ent_info.mode;
}
if( entity_info != NULL ) {
rc = SG_request_data_init_manifest( gateway, reqdat->fs_path, ent_info.file_id, ent_info.version, ent_info.manifest_mtime_sec, ent_info.manifest_mtime_nsec, entity_info );
if( rc != 0 ) {
// OOM
md_entry_free( &ent_info );
return -ENOMEM;
}
if( ent_info.type != MD_ENTRY_FILE ) {
// not a file
md_entry_free( &ent_info );
return -ENOENT;
}
}
md_entry_free( &ent_info );
return 0;
}
void meta_data_destroy(meta_data_t *md) /* {{{ */
{
if (md == NULL)
return;
md_entry_free(md->head);
pthread_mutex_destroy(&md->lock);
free(md);
} /* }}} void meta_data_destroy */
static int md_entry_insert (meta_data_t *md, meta_entry_t *e) /* {{{ */
{
meta_entry_t *this;
meta_entry_t *prev;
if ((md == NULL) || (e == NULL))
return (-EINVAL);
pthread_mutex_lock (&md->lock);
prev = NULL;
this = md->head;
while (this != NULL)
{
if (strcasecmp (e->key, this->key) == 0)
break;
prev = this;
this = this->next;
}
if (this == NULL)
{
/* This key does not exist yet. */
if (md->head == NULL)
md->head = e;
else
{
assert (prev != NULL);
prev->next = e;
}
e->next = NULL;
}
else /* (this != NULL) */
{
if (prev == NULL)
md->head = e;
else
prev->next = e;
e->next = this->next;
}
pthread_mutex_unlock (&md->lock);
if (this != NULL)
{
this->next = NULL;
md_entry_free (this);
}
return (0);
} /* }}} int md_entry_insert */
/* XXX: The lock on md must be held while calling this function! */
static int md_entry_insert_clone(meta_data_t *md, meta_entry_t *orig) /* {{{ */
{
meta_entry_t *e;
meta_entry_t *this;
meta_entry_t *prev;
/* WARNINGS :
* - we do not check that md and e != NULL here. You should have done it
* before.
* - we do not use the lock. You should have set it before.
*/
e = md_entry_clone_contents(orig);
prev = NULL;
this = md->head;
while (this != NULL) {
if (strcasecmp(e->key, this->key) == 0)
break;
prev = this;
this = this->next;
}
if (this == NULL) {
/* This key does not exist yet. */
if (md->head == NULL)
md->head = e;
else {
assert(prev != NULL);
prev->next = e;
}
e->next = NULL;
} else /* (this != NULL) */
{
if (prev == NULL)
md->head = e;
else
prev->next = e;
e->next = this->next;
}
if (this != NULL) {
this->next = NULL;
md_entry_free(this);
}
return (0);
} /* }}} int md_entry_insert_clone */
// utime
int fs_entry_utime( struct fs_core* core, char const* path, struct utimbuf* tb, uint64_t user, uint64_t volume ) {
int err = 0;
uint64_t parent_id = 0;
char* parent_name = NULL;
struct fs_entry* fent = fs_entry_resolve_path_and_parent_info( core, path, user, volume, true, &err, &parent_id, &parent_name );
if( !fent || err ) {
if( !err )
err = -ENOMEM;
return err;
}
// check permissions
if( tb == NULL && !IS_WRITEABLE( fent->mode, fent->owner, fent->volume, user, volume ) ) {
fs_entry_unlock( fent );
return -EACCES;
}
if( tb != NULL && fent->owner != user ) {
fs_entry_unlock( fent );
return -EACCES;
}
if( tb != NULL ) {
fent->mtime_sec = tb->modtime;
fent->atime = tb->actime;
}
else {
struct timespec ts;
clock_gettime( CLOCK_REALTIME, &ts );
fent->mtime_sec = ts.tv_sec;
fent->mtime_nsec = ts.tv_nsec;
fent->atime = fent->mtime_sec;
}
fent->atime = currentTimeSeconds();
// post update
struct md_entry up;
fs_entry_to_md_entry( core, &up, fent, parent_id, parent_name );
int rc = ms_client_update( core->ms, &fent->write_nonce, &up );
if( rc != 0 ) {
errorf("ms_client_update(%s) rc = %d\n", path, rc );
}
md_entry_free( &up );
fs_entry_unlock( fent );
return rc;
}
// do the create remotely on the MS
// child must be write-locked
int fs_entry_do_MS_create( struct fs_core* core, char const* path, struct fs_entry* child, uint64_t parent_id, char const* parent_name ) {
// create this file in the MS
struct md_entry data;
int rc = 0;
fs_entry_to_md_entry( core, &data, child, parent_id, parent_name );
// create synchronously, obtaining the child's file ID and write_nonce
rc = ms_client_create( core->ms, &child->file_id, &child->write_nonce, &data );
md_entry_free( &data );
return rc;
}
static void md_entry_free(meta_entry_t *e) /* {{{ */
{
if (e == NULL)
return;
free(e->key);
if (e->type == MD_TYPE_STRING)
free(e->value.mv_string);
if (e->next != NULL)
md_entry_free(e->next);
free(e);
} /* }}} void md_entry_free */
/*
* Add functions
*/
int meta_data_add_string(meta_data_t *md, /* {{{ */
const char *key, const char *value) {
meta_entry_t *e;
if ((md == NULL) || (key == NULL) || (value == NULL))
return (-EINVAL);
e = md_entry_alloc(key);
if (e == NULL)
return (-ENOMEM);
e->value.mv_string = md_strdup(value);
if (e->value.mv_string == NULL) {
ERROR("meta_data_add_string: md_strdup failed.");
md_entry_free(e);
return (-ENOMEM);
}
e->type = MD_TYPE_STRING;
return (md_entry_insert(md, e));
} /* }}} int meta_data_add_string */
int meta_data_delete (meta_data_t *md, const char *key) /* {{{ */
{
meta_entry_t *this;
meta_entry_t *prev;
if ((md == NULL) || (key == NULL))
return (-EINVAL);
pthread_mutex_lock (&md->lock);
prev = NULL;
this = md->head;
while (this != NULL)
{
if (strcasecmp (key, this->key) == 0)
break;
prev = this;
this = this->next;
}
if (this == NULL)
{
pthread_mutex_unlock (&md->lock);
return (-ENOENT);
}
if (prev == NULL)
md->head = this->next;
else
prev->next = this->next;
pthread_mutex_unlock (&md->lock);
this->next = NULL;
md_entry_free (this);
return (0);
} /* }}} int meta_data_delete */
// chmod
int fs_entry_chmod( struct fs_core* core, char const* path, uint64_t user, uint64_t volume, mode_t mode ) {
int err = 0;
uint64_t parent_id = 0;
char* parent_name = NULL;
struct fs_entry* fent = fs_entry_resolve_path_and_parent_info( core, path, user, volume, true, &err, &parent_id, &parent_name );
if( !fent || err ) {
if( !err )
err = -ENOMEM;
return err;
}
// can't chmod unless we own the file
if( fent->owner != user ) {
fs_entry_unlock( fent );
free( parent_name );
return -EPERM;
}
fent->mode = mode;
// post update
struct md_entry up;
fs_entry_to_md_entry( core, &up, fent, parent_id, parent_name );
int rc = ms_client_update( core->ms, &fent->write_nonce, &up );
if( rc != 0 ) {
errorf("ms_client_update(%s) rc = %d\n", path, rc );
}
md_entry_free( &up );
fs_entry_unlock( fent );
free( parent_name );
return rc;
}
// remove a directory, if it is empty
int fs_entry_rmdir( struct fs_core* core, char const* path, uint64_t user, uint64_t volume ) {
if( core->gateway == GATEWAY_ANON ) {
errorf("%s", "Removing directories is forbidden for anonymous gateways\n");
return -EPERM;
}
// get some info about this directory first
int rc = 0;
char* fpath = strdup( path );
md_sanitize_path( fpath );
// revalidate this path
rc = fs_entry_revalidate_path( core, volume, fpath );
if( rc != 0 && rc != -ENOENT ) {
// consistency cannot be guaranteed
errorf("fs_entry_revalidate_path(%s) rc = %d\n", fpath, rc );
free( fpath );
return rc;
}
free( fpath );
int err = 0;
struct fs_entry* dent = fs_entry_resolve_path( core, path, user, volume, false, &err );
if( !dent || err ) {
return err;
}
if( dent->ftype != FTYPE_DIR ) {
fs_entry_unlock( dent );
return -ENOTDIR;
}
char* path_dirname = md_dirname( path, NULL );
struct fs_entry* parent = fs_entry_resolve_path( core, path_dirname, user, volume, true, &err );
free( path_dirname );
if( !parent || err ) {
fs_entry_unlock( dent );
return err;
}
// IS THE PARENT EMPTY?
if( fs_entry_set_count( dent->children ) > 2 ) {
// nope
fs_entry_unlock( dent );
fs_entry_unlock( parent );
return -ENOTEMPTY;
}
struct md_entry ent;
fs_entry_to_md_entry( core, &ent, dent, parent->file_id, parent->name );
// tell the MS that this directory should go away
rc = ms_client_delete( core->ms, &ent );
md_entry_free( &ent );
if( rc != 0 ) {
errorf( "ms_client_delete(%s) rc = %d\n", path, rc );
rc = -EREMOTEIO;
fs_entry_unlock( dent );
fs_entry_unlock( parent );
}
else {
fs_entry_unlock( dent );
// detach from the filesystem
rc = fs_entry_detach_lowlevel( core, parent, dent );
if( rc != 0 ) {
errorf("fs_entry_detach_lowlevel(%s) rc = %d\n", path, rc );
}
fs_entry_unlock( parent );
}
return rc;
}
// unlink a file from the filesystem
// pass -1 if the version is not known, or pass the known version to be unlinked
// return -EUCLEAN if we failed to garbage-collect, but needed to (i.e. a manifest was missing)
// return -EREMOTEIO for failure to revalidate metadata
// return -ESTALE if the given information is out of date
int fs_entry_versioned_unlink( struct fs_core* core, char const* path, uint64_t file_id, uint64_t coordinator_id, int64_t known_version, uint64_t owner, uint64_t volume, uint64_t gateway_id,
bool check_file_id_and_coordinator_id ) {
// can't modify state if anonymous
if( core->gateway == SG_GATEWAY_ANON ) {
SG_error("%s", "Writing is forbidden for anonymous gateways\n");
return -EPERM;
}
// get some info about this file first
int rc = 0;
int err = 0;
bool no_manifest = false;
// consistency check
err = fs_entry_revalidate_path( core, path );
if( err != 0 ) {
SG_error("fs_entry_revalidate_path(%s) rc = %d\n", path, err );
if( err == -ENOENT )
return -ENOENT;
return -EREMOTEIO;
}
// look up the parent
char* path_dirname = md_dirname( path, NULL );
char* path_basename = md_basename( path, NULL );
struct fs_entry* parent = fs_entry_resolve_path( core, path_dirname, owner, volume, true, &err );
free( path_dirname );
if( !parent || err ) {
free( path_basename );
return err;
}
if( parent->ftype != FTYPE_DIR ) {
fs_entry_unlock( parent );
free( path_basename );
return err;
}
// get the child
struct fs_entry* fent = fs_entry_set_find_name( parent->children, path_basename );
free( path_basename );
if( fent == NULL ) {
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return -ENOENT;
}
fs_entry_wlock( fent );
bool local = FS_ENTRY_LOCAL( core, fent );
int64_t version = fent->version;
if( check_file_id_and_coordinator_id ) {
if( fent->file_id != file_id ) {
SG_error("Remote unlink to file %s ID %" PRIX64 ", expected %" PRIX64 "\n", path, file_id, fent->file_id );
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return -ESTALE;
}
if( fent->coordinator != coordinator_id ) {
SG_error("Remote unlink to file %s coordinator %" PRIu64 ", expected %" PRIu64 "\n", path, coordinator_id, fent->coordinator );
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return -ESTALE;
}
}
if( known_version > 0 && fent->version > 0 && fent->version != known_version ) {
SG_error("Remote unlink to file %s version %" PRId64 ", expected %" PRId64 "\n", path, known_version, fent->version );
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return -ESTALE;
}
// make sure the manifest is fresh, so we delete every block
// only need to worry about this if file has > 0 size
if( fent->size > 0 ) {
// try to get it
err = fs_entry_revalidate_manifest( core, path, fent );
if( err != 0 ) {
SG_error( "fs_entry_revalidate_manifest(%s) rc = %d\n", path, err );
if( err == -ENOENT ) {
// continue without a manifest
no_manifest = true;
SG_error("WARN: no manifest found for %s %" PRIX64 ". Assuming data is already vacuumed.\n", path, fent->file_id );
}
else {
// some other problem
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return err;
}
}
}
// tell the driver we're deleting
int driver_rc = driver_delete_file( core, core->closure, path, fent );
if( driver_rc != 0 ) {
SG_error("driver_delete_file(%s %" PRIX64 ") rc = %d\n", path, fent->file_id, driver_rc );
fs_entry_unlock( fent );
fs_entry_unlock( parent );
return driver_rc;
}
rc = 0;
if( !local ) {
// this is someone else's file; tell them to unlink
Serialization::WriteMsg* detach_request = new Serialization::WriteMsg();
fs_entry_init_write_message( detach_request, core, Serialization::WriteMsg::DETACH );
fs_entry_prepare_detach_message( detach_request, path, fent, version );
Serialization::WriteMsg* detach_ack = new Serialization::WriteMsg();
// send the write message, or become the coordinator
rc = fs_entry_send_write_or_coordinate( core, path, fent, detach_request, detach_ack );
if( rc < 0 ) {
SG_error( "fs_entry_send_write_or_coordinate(%s) rc = %d\n", path, rc );
}
else if( rc == 0 ) {
// successfully sent
if( detach_ack->type() != Serialization::WriteMsg::ACCEPTED ) {
if( detach_ack->type() == Serialization::WriteMsg::ERROR ) {
// could not detach on the remote end
SG_error( "remote unlink error = %d (%s)\n", detach_ack->errorcode(), detach_ack->errortxt().c_str() );
rc = detach_ack->errorcode();
}
else {
// unknown message
SG_error( "remote unlink invalid message %d\n", detach_ack->type() );
rc = -EIO;
}
}
}
else {
// we're now the coordinator.
local = true;
}
delete detach_ack;
delete detach_request;
}
if( local ) {
// we're responsible for this file
// mark the file as deleted, so it won't show up again in any listing
fent->deletion_in_progress = true;
// safe to unlock parent--it won't be empty (in a rmdir-able sense) until fent is fully garbage-collected, but fent won't be listed either
fs_entry_unlock( parent );
// garbage-collect, then unlink on the MS. Loop this until we succeed in unlinking on the MS (which can only happen
// once all of fent's data has been garbage-collected).
while( true ) {
if( !no_manifest ) {
// if we got the latest manifest, garbage-collect all writes on the file
rc = fs_entry_vacuumer_file( core, path, fent );
if( rc != 0 ) {
SG_error("fs_entry_vacuumer_vacuum_file( %s %" PRIX64 " ) rc = %d\n", path, fent->file_id, rc );
// failed to garbage-collect...need to un-delete fent
fent->deletion_in_progress = false;
fs_entry_unlock( fent );
return -EREMOTEIO;
}
}
// tell the metadata server we just unlinked
// preserve the entry information so we can issue a deletion
struct md_entry ent;
fs_entry_to_md_entry( core, &ent, fent, parent->file_id, parent->name );
rc = ms_client_delete( core->ms, &ent );
md_entry_free( &ent );
if( rc != 0 ) {
SG_error( "ms_client_delete(%s) rc = %d\n", path, rc );
if( rc == -EAGAIN ) {
if( !no_manifest ) {
// try vacuuming again--some write got added in between our garbage-collection and our unlink request
rc = 0;
continue;
}
else {
// there are un-garbage-collected writes, but we have no manifest, so we can't vacuum in order to proceed with the delete.
SG_error("MEMORY LEAK DETECTED: No manifest for %" PRIX64 " available; unable to vacuum!\n", fent->file_id );
// failed to garbage-collect...need to un-delete fent
fent->deletion_in_progress = false;
fs_entry_unlock( fent );
return -EUCLEAN;
}
}
else {
// something more serious
rc = -EREMOTEIO;
fent->deletion_in_progress = false;
fs_entry_unlock( fent );
return rc;
}
}
else {
// success!
break;
}
}
// re-lock the parent--it's guaranteed to exist, since it's not empty
fs_entry_wlock( parent );
// unlock fent--we're done with it
fs_entry_unlock( fent );
// detatch fent from parent
rc = fs_entry_detach_lowlevel( core, parent, fent );
if( rc != 0 ) {
SG_error("fs_entry_detach_lowlevel(%" PRIX64 ") rc = %d\n", fent->file_id, rc );
fs_entry_unlock( parent );
return rc;
}
fs_entry_unlock( parent );
}
return rc;
}
// make a node (regular files only at this time)
int fs_entry_mknod( struct fs_core* core, char const* path, mode_t mode, dev_t dev, uint64_t user, uint64_t vol ) {
// only regular files at this time...
if( ! ( S_ISREG( mode ) || S_ISFIFO( mode ) ) ) {
return -ENOTSUP;
}
// revalidate this path
int rc = fs_entry_revalidate_path( core, path );
if( rc != 0 && rc != -ENOENT ) {
// consistency cannot be guaranteed
SG_error("fs_entry_revalidate_path(%s) rc = %d\n", path, rc );
return rc;
}
int err = 0;
// get the parent directory and lock it
char* path_dirname = md_dirname( path, NULL );
struct fs_entry* parent = fs_entry_resolve_path( core, path_dirname, user, vol, true, &err );
free( path_dirname );
if( !IS_DIR_READABLE( parent->mode, parent->owner, parent->volume, user, vol ) ) {
// not searchable
fs_entry_unlock( parent );
return -EACCES;
}
if( !IS_WRITEABLE( parent->mode, parent->owner, parent->volume, user, vol ) ) {
// not writeable
fs_entry_unlock( parent );
return -EACCES;
}
uint64_t parent_id = parent->file_id;
char* parent_name = strdup( parent->name );
char* path_basename = md_basename( path, NULL );
// make sure it doesn't exist already (or isn't in the process of being deleted, since we might have to re-create it if deleting it fails)
if( fs_entry_set_find_name( parent->children, path_basename ) != NULL ) {
free( path_basename );
fs_entry_unlock( parent );
free( parent_name );
return -EEXIST;
}
struct fs_entry* child = (struct fs_entry*)calloc( sizeof(struct fs_entry), 1 );
struct timespec ts;
clock_gettime( CLOCK_REALTIME, &ts );
int mmode = 0;
if (S_ISFIFO(mode)) {
mmode = ( mode & 0777 ) | S_IFIFO;
err = fs_entry_init_fifo( core, child, path_basename, 0, fs_entry_next_file_version(), user, core->gateway, vol, mmode, 0, ts.tv_sec, ts.tv_nsec, 0, 0 );
}
if (S_ISREG(mode)) {
mmode = ( mode & 0777 );
err = fs_entry_init_file( core, child, path_basename, 0, fs_entry_next_file_version(), user, core->gateway, vol, mmode, 0, ts.tv_sec, ts.tv_nsec, 0, 0 );
}
if( err == 0 ) {
// mark it as created in this session
child->created_in_session = true;
// we're creating, so this manifest is initialized (to zero blocks)
child->manifest->initialize_empty( child->version );
fs_entry_wlock( child );
// call the driver
err = driver_create_file( core, core->closure, path, child );
if( err != 0 ) {
// undo
SG_error("driver_create_file(%s) rc = %d\n", path, err );
child->open_count = 0;
fs_entry_unlock( child );
fs_entry_destroy( child, false );
free( child );
}
else {
// attach the file
fs_entry_attach_lowlevel( core, parent, child );
struct md_entry data;
fs_entry_to_md_entry( core, &data, child, parent_id, parent_name );
// create the child on the MS, obtaining its file ID and write nonce
err = ms_client_create( core->ms, &child->file_id, &child->write_nonce, &data );
md_entry_free( &data );
if( err != 0 ) {
SG_error( "ms_client_create(%s) rc = %d\n", path, err );
err = -EREMOTEIO;
child->open_count = 0;
fs_entry_unlock( child );
fs_entry_detach_lowlevel( core, parent, child );
free( child );
}
else {
fs_entry_unlock( child );
}
}
}
fs_entry_unlock( parent );
free( parent_name );
free( path_basename );
return err;
}
// finish up getting directory metadata, and free up the download handle
// return 0 on success, and set *batch_id to this download's batch
// *ret_num_children to the number of children downloaded, and *max_gen to be the largest generation number seen.
// return -ENOMEM on OOM
static int ms_client_get_dir_metadata_end( struct ms_client* client, uint64_t parent_id, struct md_download_context* dlctx, ms_client_dir_listing* dir_listing, int64_t* batch_id, size_t* ret_num_children, int64_t* max_gen ) {
int rc = 0;
int listing_error = 0;
struct md_entry* children = NULL;
size_t num_children = 0;
size_t num_unique_children = 0;
CURL* curl = NULL;
int64_t biggest_generation = 0;
struct ms_client_get_dir_download_state* dlstate = (struct ms_client_get_dir_download_state*)md_download_context_get_cls( dlctx );
md_download_context_set_cls( dlctx, NULL );
// download status?
rc = ms_client_download_parse_errors( dlctx );
if( rc != 0 ) {
if( rc != -EAGAIN) {
// fatal
SG_error("ms_client_download_parse_errors( %p ) rc = %d\n", dlctx, rc );
}
md_download_context_unref_free( dlctx, &curl );
if( curl != NULL ) {
curl_easy_cleanup( curl );
}
ms_client_get_dir_download_state_free( dlstate );
dlstate = NULL;
return rc;
}
// collect the data
rc = ms_client_listing_read_entries( client, dlctx, &children, &num_children, &listing_error );
// done with the download
md_download_context_unref_free( dlctx, &curl );
if( curl != NULL ) {
curl_easy_cleanup( curl );
}
ms_client_get_dir_download_state_free( dlstate );
dlstate = NULL;
// did we get valid data?
if( rc != 0 ) {
SG_error("ms_client_listing_read_entries(%p) rc = %d\n", dlctx, rc );
return rc;
}
if( listing_error != MS_LISTING_NEW ) {
// somehow we didn't get data. shouldn't happen in listdir
SG_error("BUG: failed to get listing data for %" PRIX64 ", listing_error = %d\n", parent_id, listing_error );
return -ENODATA;
}
// merge children in
for( unsigned int i = 0; i < num_children; i++ ) {
uint64_t file_id = children[i].file_id;
SG_debug("%p: %" PRIX64 "\n", dlctx, file_id );
if( dir_listing->count( file_id ) > 0 ) {
SG_warn("Duplicate child %" PRIX64 "\n", file_id );
md_entry_free( &children[i] );
continue;
}
try {
(*dir_listing)[ file_id ] = children[i];
}
catch( bad_alloc& ba ) {
rc = -ENOMEM;
break;
}
// generation?
if( children[i].generation > biggest_generation ) {
biggest_generation = children[i].generation;
}
num_unique_children ++;
}
// NOTE: shallow free--we've copied the children into dir_listing
SG_safe_free( children );
*ret_num_children = num_unique_children;
*max_gen = biggest_generation;
return 0;
}
// entry point
int main( int argc, char** argv ) {
int rc = 0;
struct UG_state* ug = NULL;
struct SG_gateway* gateway = NULL;
int path_optind = 0;
struct tool_opts opts;
struct md_entry ent_data;
char* path = NULL;
uint64_t new_coord = 0;
memset( &opts, 0, sizeof(tool_opts) );
rc = parse_args( argc, argv, &opts );
if( rc != 0 ) {
usage( argv[0], "file [file...]" );
md_common_usage();
exit(1);
}
// setup...
ug = UG_init( argc, argv, opts.anonymous );
if( ug == NULL ) {
SG_error("%s", "UG_init failed\n" );
exit(1);
}
gateway = UG_state_gateway( ug );
// get the list of files to coordinate
path_optind = SG_gateway_first_arg_optind( gateway );
if( path_optind == argc ) {
usage( argv[0], "file [file...]" );
md_common_usage();
UG_shutdown( ug );
exit(1);
}
for( int i = path_optind; i < argc; i++ ) {
path = argv[i];
// make sure this is a file...
rc = UG_stat_raw( ug, path, &ent_data );
if( rc != 0 ) {
SG_error("UG_stat_raw('%s') rc = %d\n", path, rc );
rc = 1;
goto UG_coord_shutdown;
}
if( ent_data.type != MD_ENTRY_FILE ) {
fprintf(stderr, "Not a file: %s\n", path );
rc = 1;
goto UG_coord_shutdown;
}
// if we're not the coordinator, become it
if( ent_data.coordinator != SG_gateway_id( gateway ) ) {
SG_debug("Become the coordinator of '%s'\n", path );
rc = UG_chcoord( ug, path, &new_coord );
if( rc != 0 ) {
fprintf(stderr, "chcoord '%s': %s\n", path, strerror(-rc) );
rc = 1;
goto UG_coord_shutdown;
}
}
md_entry_free( &ent_data );
}
// proceed to handle requests
SG_debug("%s", "Proceed to handle requests\n");
rc = UG_main( ug );
if( rc != 0 ) {
fprintf(stderr, "UG_main: %s\n", strerror(-rc) );
rc = 1;
}
UG_coord_shutdown:
UG_shutdown( ug );
exit(rc);
}
