94 lines
2.9 KiB
Groff
94 lines
2.9 KiB
Groff
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.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Author: KaiGai Kohei <kaigai@ak.jp.nec.com> 2009
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.TH "selabel_db" "5" "22 Nov 2009" "" "SELinux API documentation"
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.SH "NAME"
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selabel_db \- userspace SELinux labeling interface: DB objects contexts backend.
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.SH "SYNOPSIS"
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.B #include <selinux/selinux.h>
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.B #include <selinux/label.h>
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.sp
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.BI "int selabel_lookup(struct selabel_handle *" hnd ,
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.in +\w'int selabel_lookup('u
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.BI "security_context_t *" context ,
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.BI "const char *" object_name ", int " object_type ");"
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.SH "DESCRIPTION"
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The DB contexts backend maps from a pair of object name and class into security contexts. It is used to find the appropriate context for database objects when relabeling a certain database.
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The
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.I object_name
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should be fully qualified name using the hierarchy of database objects.
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For example, the
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.B pg_class
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table in the
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.B postgres
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database and
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.B pg_catalog
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schema should be qualified as
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.B postgres.pg_catalog.pg_class .
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The
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.I object_type
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argument should be set to one of the following values:
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.TP
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.B SELABEL_DB_DATABASE
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The
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.I object_name
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argument specifies the name of a database itself, such as "postgres".
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.TP
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.B SELABEL_DB_SCHEMA
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The
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.I object_name
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argument specifies the name of a schema object, such as "postgres.public".
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.TP
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.B SELABEL_DB_TABLE
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The
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.I object_name
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argument specifies the name of a table object, such as "postgres.public.my_table"
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.TP
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.B SELABEL_DB_COLUMN
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The
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.I object_name
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argument specifies the name of a column object, such as "postgres.public.my_table.user_id"
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.TP
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.B SELABEL_DB_TUPLE
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The
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.I object_name
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argument specifies the name of a table object which contains the tuples to be relabeled, such as "postgresql.public.my_table". Note that we have no way to identify individual tuple objects, except for WHERE clause on DML statements, because it has no name.
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.TP
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.B SELABEL_DB_PROCEDURE
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The
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.I object_name
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argument specifies the name of a procedure object, such as "postgres.public.my_func". Note that we don't support to lookup individual security contexts for each procedures which have same name but different arguments.
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.TP
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.B SELABEL_DB_SEQUENCE
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The
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.I object_name
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argument specifies the name of a sequence object, such as "postgres.public.my_seq".
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.TP
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.B SELABEL_DB_BLOB
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The
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.I object_name
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argument specifies the name of a large object, such as "postgres.16308".
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Note that a large object does not have its name, so it is identified by its identifier value.
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.SH "OPTIONS"
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In addition to the global options described in
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.BR selabel_open (3),
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this backend recognizes the following options:
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.TP
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.B SELABEL_OPT_PATH
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A non-null value for this option specifies a path to a file that will be opened in lieu of the standard DB contexts file.
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It tries to open the specfile designed for SE-PostgreSQL in the default, so if another RDBMS uses this interface, it needs to give an explicit specfile designed for the RDBMS.
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.SH "SEE ALSO"
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.BR selabel_open (3),
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.BR selabel_lookup (3),
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.BR selabel_stats (3),
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.BR selinux (8)
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