Esempi in C++ (Cpp) per tagsistant_is_tags_list_file

Esempio n. 1

File: open.c Progetto: Copperis/Tagsistant

/**
 * open() equivalent
 *
 * @param path the path to be open()ed
 * @param fi struct fuse_file_info holding open() flags
 * @return(0 on success, -errno otherwise)
 */
int tagsistant_open(const char *path, struct fuse_file_info *fi)
{
    int res = -1, tagsistant_errno = ENOENT;

	TAGSISTANT_START("OPEN on %s", path);

	// build querytree
	tagsistant_querytree *qtree = tagsistant_querytree_new(path, 0, 0, 1, 0);

	// -- malformed --
	if (QTREE_IS_MALFORMED(qtree))
		TAGSISTANT_ABORT_OPERATION(ENOENT);

	// -- error message --
	if (qtree->error_message && g_regex_match_simple("@/error$", path, G_REGEX_EXTENDED, 0)) {
		res = 1;
		tagsistant_errno = 0;
		goto TAGSISTANT_EXIT_OPERATION;
	}

	// -- object --
	else if (QTREE_POINTS_TO_OBJECT(qtree)) {
		if (tagsistant_is_tags_list_file(qtree)) {
			res = open(tagsistant.tags, fi->flags|O_RDONLY);
			tagsistant_errno = errno;
			goto TAGSISTANT_EXIT_OPERATION;
		}

		if (!qtree->full_archive_path) {
			dbg('F', LOG_ERR, "Null qtree->full_archive_path");
			TAGSISTANT_ABORT_OPERATION(EFAULT);
		}

		res = open(qtree->full_archive_path, fi->flags /*|O_RDONLY */);
		tagsistant_errno = errno;

		if (-1 != res) {
#if TAGSISTANT_ENABLE_FILE_HANDLE_CACHING
			tagsistant_set_file_handle(fi, res);
			dbg('F', LOG_INFO, "Caching %" PRIu64 " = open(%s)", fi->fh, path);
//			fprintf(stderr, "Opened FD %lu\n", fi->fh);

#else
			close(res);
#endif

			tagsistant_querytree_check_tagging_consistency(qtree);

			if (QTREE_IS_TAGGABLE(qtree)) {
				if ((fi->flags & O_WRONLY) || (fi->flags & O_RDWR)) {
					// invalidate the checksum
					dbg('2', LOG_INFO, "Invalidating checksum on %s", path);
					tagsistant_invalidate_object_checksum(qtree->inode, qtree->dbi);
				} else {
					fi->keep_cache = 1;
				}
			}
		} else {
			tagsistant_set_file_handle(fi, 0);
		}
	}

	// -- stats --
	else if (QTREE_IS_STATS(qtree)) {
		res = open(tagsistant.tags, fi->flags|O_RDONLY);
		tagsistant_set_file_handle(fi, res);
		tagsistant_errno = errno;
		fi->keep_cache = 0;
	}

	// -- alias --
	else if (QTREE_IS_ALIAS(qtree) && qtree->alias) {
		if (tagsistant_sql_alias_exists(qtree->dbi, qtree->alias)) {
			res = 0;
			tagsistant_errno = 0;
		} else {
			TAGSISTANT_ABORT_OPERATION(ENOENT);
		}
	}

	// -- tags --
	// -- relations --
	else TAGSISTANT_ABORT_OPERATION(EROFS);

TAGSISTANT_EXIT_OPERATION:
	if ( res == -1 ) {
		TAGSISTANT_STOP_ERROR("OPEN on %s (%s) (%s): %d %d: %s", path, qtree->full_archive_path, tagsistant_querytree_type(qtree), res, tagsistant_errno, strerror(tagsistant_errno));
		tagsistant_querytree_destroy(qtree, TAGSISTANT_ROLLBACK_TRANSACTION);
		return (-tagsistant_errno);
	} else {
		TAGSISTANT_STOP_OK("OPEN on %s (%s): OK", path, tagsistant_querytree_type(qtree));
		tagsistant_querytree_destroy(qtree, TAGSISTANT_COMMIT_TRANSACTION);
		return (0);
	}
}

Esempio n. 2

File: mknod.c Progetto: StrumentiResistenti/Tagsistant

/**
 * mknod equivalent (used to create even regular files)
 *
 * @param path the path of the file (block, char, fifo) to be created
 * @param mode file type and permissions
 * @param rdev major and minor numbers, if applies
 * @return(0 on success, -errno otherwise)
 */
int tagsistant_mknod(const char *path, mode_t mode, dev_t rdev)
{
	int res = 0, tagsistant_errno = 0;

	TAGSISTANT_START(OPS_IN "MKNOD on %s [mode: %u rdev: %u]", path, mode, (unsigned int) rdev);

	// build querytree
	tagsistant_querytree *qtree = tagsistant_querytree_new(path, 0, 1, 1, 0);

	// -- malformed --
	if (QTREE_IS_MALFORMED(qtree))
		TAGSISTANT_ABORT_OPERATION(EFAULT);

	// -- archive --
	if (QTREE_IS_ARCHIVE(qtree))
		TAGSISTANT_ABORT_OPERATION(EROFS);

	// -- tags --
	if (QTREE_POINTS_TO_OBJECT(qtree)) {
		if (is_all_path(qtree->full_path)) TAGSISTANT_ABORT_OPERATION(EFAULT);

		if (tagsistant_is_tags_list_file(qtree)) goto TAGSISTANT_EXIT_OPERATION;

		tagsistant_querytree_check_tagging_consistency(qtree);

		if (QTREE_IS_TAGGABLE(qtree)) {
			res = tagsistant_force_create_and_tag_object(qtree, &tagsistant_errno);
		}

		if (qtree->inode) {
			dbg('F', LOG_INFO, "NEW object on disk: mknod(%s) [inode: %d]", qtree->full_archive_path, qtree->inode);

			res = mknod(qtree->full_archive_path, mode|S_IWUSR, rdev);
			tagsistant_errno = errno;

			// clean the RDS library
			tagsistant_delete_rds_involved(qtree);
		}
	} else

	// -- alias --
	if (QTREE_IS_ALIAS(qtree)) {
		tagsistant_sql_alias_create(qtree->dbi, qtree->alias);
	}

	// -- stats --
	// -- relations --
	else TAGSISTANT_ABORT_OPERATION(EROFS);

TAGSISTANT_EXIT_OPERATION:
	if ( res is -1 ) {
		TAGSISTANT_STOP_ERROR(OPS_OUT "MKNOD on %s (%s) (%s): %d %d: %s",
			path, qtree->full_archive_path, tagsistant_querytree_type(qtree),
			res, tagsistant_errno, strerror(tagsistant_errno));
		tagsistant_querytree_destroy(qtree, TAGSISTANT_ROLLBACK_TRANSACTION);
		return (-tagsistant_errno);
	} else {
		TAGSISTANT_STOP_OK(OPS_OUT "MKNOD on %s (%s): OK", path, tagsistant_querytree_type(qtree));
		tagsistant_querytree_destroy(qtree, TAGSISTANT_COMMIT_TRANSACTION);
		return (0);
	}
}