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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | NOTES | AUTHOR | SEE ALSO | COLOPHON |
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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 <[email protected]>
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 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2023-05-11.) 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
[email protected]
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)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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