NAME
selinux_restorecon_xattr - manage default security.sehash extended attribute entries added by selinux_restorecon(3), setfiles(8) or restorecon(8).
SYNOPSIS
#include <selinux/restorecon.h>
int selinux_restorecon_xattr(const char *pathname,
unsigned int
xattr_flags,
struct dir_xattr ***xattr_list);
DESCRIPTION
selinux_restorecon_xattr() returns a linked list of dir_xattr structures containing information described below based on:
pathname containing a directory tree to be searched for security.sehash extended attribute entries.
xattr_flags contains options as follows:
SELINUX_RESTORECON_XATTR_RECURSE recursively descend directories.
SELINUX_RESTORECON_XATTR_DELETE_NONMATCH_DIGESTS delete non-matching digests from each directory in pathname.
SELINUX_RESTORECON_XATTR_DELETE_ALL_DIGESTS delete all digests from each directory in pathname.
SELINUX_RESTORECON_XATTR_IGNORE_MOUNTS
do not read /proc/mounts to obtain a list of
non-seclabel mounts to be excluded from the search.
Setting SELINUX_RESTORECON_XATTR_IGNORE_MOUNTS is
useful where there is a non-seclabel fs mounted with a
seclabel fs mounted on a directory below this.
xattr_list is the returned pointer to a linked list of dir_xattr structures, each containing the following information:
struct dir_xattr {
|
char *directory; | ||
|
char *digest; /* Printable hex encoded string */ | ||
|
enum digest_result result; | ||
|
struct dir_xattr *next; |
};
The result entry is enumerated as follows:
enum digest_result {
|
MATCH = 0, | ||
|
NOMATCH, | ||
|
DELETED_MATCH, | ||
|
DELETED_NOMATCH, | ||
|
ERROR |
};
xattr_list must be set to NULL before calling selinux_restorecon_xattr(3). The caller is responsible for freeing the returned xattr_list entries in the linked list.
See the NOTES section for more information.
RETURN VALUE
On success, zero is returned. On error, -1 is returned and errno is set appropriately.
NOTES
|
1. |
By default selinux_restorecon_xattr(3) will use the default set of specfiles described in files_contexts(5) to calculate the SHA1 digests to be used for comparison. To change this default behavior selabel_open(3) must be called specifying the required SELABEL_OPT_PATH and setting the SELABEL_OPT_DIGEST option to a non-NULL value. selinux_restorecon_set_sehandle(3) is then called to set the handle to be used by selinux_restorecon_xattr(3). | ||
|
2. |
By default selinux_restorecon_xattr(3) reads /proc/mounts to obtain a list of non-seclabel mounts to be excluded from searches unless the SELINUX_RESTORECON_XATTR_IGNORE_MOUNTS flag has been set. | ||
|
3. |
RAMFS and TMPFS filesystems do not support the security.sehash extended attribute and are automatically excluded from searches. | ||
|
4. |
By default stderr is used to log output messages and errors. This may be changed by calling selinux_set_callback(3) with the SELINUX_CB_LOG type option. |
SEE ALSO
selinux_restorecon(3)
selinux_restorecon_set_sehandle(3),
selinux_restorecon_default_handle(3),
selinux_restorecon_set_exclude_list(3),
selinux_restorecon_set_alt_rootpath(3),
selinux_set_callback(3)