sepol_genusers(3) SE Linux binary policy API documentation sepol_genusers(3)NAMEsepol_genusers - Generate a new binary policy image with a customized
user configuration
SYNOPSIS
#include <sepol/sepol.h>
int sepol_genusers(void *data, size_t len, const char *usersdir, void
*newdata, size_t *newlen);
void sepol_set_delusers(int on);
DESCRIPTIONsepol_genusers generates a new binary policy image from an existing
binary policy image stored in the memory region described by the start‐
ing address data and the length len and a pair of user configuration
files named system.users and local.users from the directory specified
by usersdir. The resulting binary policy is placed into dynamically
allocated memory and the variables newdata and newlen are set to refer
to the new binary image's starting address and length. The original
binary policy image is not modified.
By default, sepol_genusers will preserve user entries that are defined
in the original binary policy image but not defined in the user config‐
uration files. If such user entries should instead by omitted entirely
from the new binary policy image, then the sepol_set_delusers function
may be called with on set to 1 prior to calling sepol_genusers in order
to enable deletion of such users.
RETURN VALUE
Returns 0 on success or -1 otherwise, with errno set appropriately. An
errno of ENOENT indicates that one or both of the user configuration
files did not exist. An errno of EINVAL indicates that either the
original binary policy image or the generated one were invalid. An
errno of ENOMEM indicates that insufficient memory was available to
process the original binary policy image or to generate the new policy
image. Invalid entries in the user configuration files are skipped
with a warning.
sds@tycho.nsa.gov 15 March 2005 sepol_genusers(3)
