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- Add man page sections '(N)' to external references, and '()' on
functions described in the same man page.
- Escape minus signs when those are expected to be used on the command
line or files.
- Mark files and variables in italic; Note headings, function names,
constants, program options and man page references in bold.
- Do not justify and hyphenate SEE ALSO section, and avoid hyphenation
on symbol names by prepending them with \%.
- Remove trailing dot from NAME section description.
- Split sections with a no-op command '.', to visually distinguish them
but to avoid introducing spurious vertical space in the formatted
output.
- Add explicit .sp commands in the SYNOPSIS section between function
prototypes, and fix space placement in function protoypes.
- Split header includes with .br (instead of the explicit or implicit
.sp) so that they are vertically contiguous.
- Add missing {} around SELINUXTYPE and POLICYTYPE variable text in
paths.
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Signed-off-by: Guillem Jover <guillem@debian.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Dan Walsh <dwalsh@redhat.com>
104 lines
2.6 KiB
Groff
104 lines
2.6 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Author: Eamon Walsh (ewalsh@tycho.nsa.gov) 2007
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.TH "selabel_open" "3" "18 Jun 2007" "" "SELinux API documentation"
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.SH "NAME"
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selabel_open, selabel_close \- userspace SELinux labeling interface
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.
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.SH "SYNOPSIS"
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.B #include <selinux/selinux.h>
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.br
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.B #include <selinux/label.h>
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.sp
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.BI "struct selabel_handle *selabel_open(int " backend ,
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.in +\w'struct selabel_handle *selabel_open('u
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.BI "struct selinux_opt *" options ,
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.br
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.BI "unsigned " nopt ");"
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.in
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.sp
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.BI "void selabel_close(struct selabel_handle *" hnd ");"
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.
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.SH "DESCRIPTION"
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.BR selabel_open ()
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is used to initialize a labeling handle to be used for lookup operations. The
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.I backend
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argument specifies which backend is to be opened; the list of current backends appears in
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.B BACKENDS
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below.
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The
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.I options
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argument should be NULL or a pointer to an array of
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.B selinux_opt
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structures of length
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.IR nopt :
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.RS
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.ta 4n 16n 24n
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.nf
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struct selinux_opt {
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int type;
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const char *value;
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};
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.fi
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.ta
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.RE
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The available option types are described in
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.B GLOBAL OPTIONS
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below as well as in the documentation for each individual backend. The return value on success is a non-NULL value for use in subsequent label operations.
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.BR selabel_close ()
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terminates use of a handle, freeing any internal resources associated with it. After this call has been made, the handle must not be used again.
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.
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.SH "GLOBAL OPTIONS"
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Global options which may be passed to
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.BR selabel_open ()
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include the following:
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.
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.TP
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.B SELABEL_OPT_UNUSED
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The option with a type code of zero is a no-op. Thus an array of options may be initizalized to zero and any untouched elements will not cause an error.
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.TP
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.B SELABEL_OPT_VALIDATE
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A non-null value for this option enables context validation. By default,
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.BR security_check_context (3)
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is used; a custom validation function can be provided via
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.BR selinux_set_callback (3).
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Note that an invalid context may not be treated as an error unless it is actually encountered during a lookup operation.
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.
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.SH "BACKENDS"
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.TP
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.B SELABEL_CTX_FILE
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File contexts backend, described in
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.BR selabel_file (5).
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.TP
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.B SELABEL_CTX_MEDIA
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Media contexts backend, described in
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.BR selabel_media (5).
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.TP
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.B SELABEL_CTX_X
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X Windows contexts backend, described in
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.BR selabel_x (5).
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.TP
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.B SELABEL_CTX_DB
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Database objects contexts backend, described in
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.BR selabel_db (5).
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.
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.SH "RETURN VALUE"
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A non-NULL handle value is returned on success. On error, NULL is returned and
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.I errno
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is set appropriately.
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.
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.SH "AUTHOR"
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Eamon Walsh <ewalsh@tycho.nsa.gov>
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.
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.SH "SEE ALSO"
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.ad l
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.nh
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.BR selabel_lookup (3),
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.BR selabel_stats (3),
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.BR selinux_set_callback (3),
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.BR selinux (8)
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