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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | NOTES | AUTHOR | SEE ALSO | COLOPHON |
avc_context_to_sid(3) SELinux API documentation avc_context_to_sid(3)
avc_context_to_sid, avc_sid_to_context, avc_get_initial_sid - obtain
and manipulate SELinux security ID's
#include <selinux/selinux.h>
#include <selinux/avc.h>
int avc_context_to_sid(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);
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.
avc_context_to_sid() and avc_sid_to_context() return zero on success.
On error, -1 is returned and errno is set appropriately.
ENOMEM An attempt to allocate memory failed.
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.
Eamon Walsh <ewalsh@tycho.nsa.gov>
avc_init(3), avc_has_perm(3), avc_cache_stats(3),
avc_add_callback(3), getcon(3), freecon(3), selinux(8)
This page is part of the selinux (Security-Enhanced Linux user-space
libraries and tools) project. Information about the project can be
found at ⟨https://github.com/SELinuxProject/selinux/wiki⟩. If you
have a bug report for this manual page, see
⟨https://github.com/SELinuxProject/selinux/wiki/Contributing⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/SELinuxProject/selinux⟩ on 2017-07-05. If you
discover any rendering problems in this HTML version of the page, or
you believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
27 May 2004 avc_context_to_sid(3)
Pages that refer to this page: avc_add_callback(3), avc_cache_stats(3), avc_compute_create(3), avc_context_to_sid(3), avc_has_perm(3), avc_open(3)