Man page - avc_get_initial_sid(3)

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Package: libselinux1-dev
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libselinux1-dev

Manual

avc_context_to_sid

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
NOTES
AUTHOR
SEE ALSO

NAME

avc_context_to_sid, avc_sid_to_context, avc_get_initial_sid - obtain and manipulate SELinux security ID’s

SYNOPSIS

#include <selinux/selinux.h>
#include <selinux/avc.h>

int avc_context_to_sid(const char * ctx , security_id_t * sid );

int avc_sid_to_context(security_id_t sid , char ** ctx );

int avc_get_initial_sid(const char * name , security_id_t * sid );

DESCRIPTION

Security ID’s (SID’s) are opaque representations of security contexts, managed by the userspace AVC.

avc_context_to_sid () returns a SID for the given context in the memory referenced by sid .

avc_sid_to_context () returns a copy of the context represented by sid in the memory referenced by ctx . The user must free the copy with freecon (3).

avc_get_initial_sid () returns a SID for the kernel initial security identifier specified by name .

RETURN VALUE

avc_context_to_sid () and avc_sid_to_context () return zero on success. On error, -1 is returned and errno is set appropriately.

ERRORS

ENOMEM

An attempt to allocate memory failed.

NOTES

As of libselinux version 2.0.86, SID’s are no longer reference counted. A SID will be valid from the time it is first obtained until the next call to avc_destroy (3). The sidget (3) and sidput (3) functions, formerly used to adjust the reference count, are no-ops and are deprecated.

AUTHOR

Eamon Walsh <ewalsh@tycho.nsa.gov>