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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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matchpathcon(3) SELinux API documentation matchpathcon(3)
matchpathcon, matchpathcon_index - get the default SELinux
security context for the specified path from the file contexts
configuration
#include <selinux/selinux.h>
int matchpathcon_init(const char *path);
int matchpathcon_init_prefix(const char *path, const char
*prefix);
int matchpathcon_fini(void);
int matchpathcon(const char *path, mode_t mode, char **con);
int matchpathcon_index(const char *name, mode_t mode, char **con);
This family of functions is deprecated. For new code, please use
selabel_open(3) with the SELABEL_CTX_FILE backend in place of
matchpathcon_init(), use selabel_close(3) in place of
matchpathcon_fini(), and use selabel_lookup(3) in place of
matchpathcon().
The remaining description below is for the legacy interface.
matchpathcon_init() loads the file contexts configuration
specified by path into memory for use by subsequent matchpathcon()
calls. If path is NULL, then the active file contexts
configuration is loaded by default, i.e. the path returned by
selinux_file_context_path(3). Unless the MATCHPATHCON_BASEONLY
flag has been set via set_matchpathcon_flags(3), files with the
same path prefix but a .homedirs and .local suffix are also looked
up and loaded if present. These files provide dynamically
generated entries for user home directories and for local
customizations.
matchpathcon_init_prefix() is the same as matchpathcon_init() but
only loads entries with regular expressions whose first pathname
component is a prefix of prefix , e.g. pass "/dev" if you only
intend to call matchpathcon() with pathnames beginning with /dev.
However, this optimization is no longer necessary due to the use
of file_contexts.bin files with precompiled regular expressions,
so use of this interface is deprecated.
matchpathcon_fini() frees the memory allocated by a prior call to
matchpathcon_init.() This function can be used to free and reset
the internal state between multiple matchpathcon_init() calls, or
to free memory when finished using matchpathcon().
matchpathcon() matches the specified pathname, after
transformation via realpath(3) excepting any final symbolic link
component if S_IFLNK was specified as the mode, and mode against
the file contexts configuration and sets the security context con
to refer to the resulting context. The caller must free the
returned security context con using freecon(3) when finished using
it. mode can be 0 to disable mode matching, but should be
provided whenever possible, as it may affect the matching. Only
the file format bits (i.e. the file type) of the mode are used.
If matchpathcon_init() has not already been called, then this
function will call it upon its first invocation with a NULL path,
defaulting to the active file contexts configuration.
matchpathcon_index() is the same as matchpathcon() but returns a
specification index that can later be used in a
matchpathcon_filespec_add(3) call.
Returns zero on success or -1 otherwise.
selinux(8), set_matchpathcon_flags(3),
set_matchpathcon_invalidcon(3), set_matchpathcon_printf(3),
matchpathcon_filespec_add(3), matchpathcon_checkmatches(3),
freecon(3), setfilecon(3), setfscreatecon(3)
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 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) 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]
stephen.smalley.work@gmai... 21 November 2009 matchpathcon(3)
Pages that refer to this page: matchpathcon_checkmatches(3), selinux_lsetfilecon_default(3), set_matchpathcon_flags(3), matchpathcon(8)
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HTML rendering created 2025-09-06 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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