#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <sys/socket.h>
#include <stdio.h>
#include <stdarg.h>
#include <libaudit.h>
#include <X11/Xatom.h>
#include "selection.h"
#include "inputstr.h"
#include "scrnintstr.h"
#include "windowstr.h"
#include "propertyst.h"
#include "extnsionst.h"
#include "xacestr.h"
#include "../os/osdep.h"
#define _XSELINUX_NEED_FLASK_MAP
#include "xselinuxint.h"
typedef struct {
ClientPtr client;
DeviceIntPtr dev;
char *command;
unsigned id;
int restype;
int event;
Atom property;
Atom selection;
char *extension;
} SELinuxAuditRec;
DevPrivateKeyRec subjectKeyRec;
DevPrivateKeyRec objectKeyRec;
DevPrivateKeyRec dataKeyRec;
static int audit_fd;
static Atom atom_ctx;
static Atom atom_client_ctx;
static security_id_t unlabeled_sid;
static void SELinuxScreen(CallbackListPtr *, pointer, pointer);
static pointer truep = (pointer)1;
static int
SELinuxDoCheck(SELinuxSubjectRec *subj, SELinuxObjectRec *obj,
security_class_t class, Mask mode, SELinuxAuditRec *auditdata)
{
if (subj->privileged)
return Success;
auditdata->command = subj->command;
errno = 0;
if (avc_has_perm(subj->sid, obj->sid, class, mode, &subj->aeref,
auditdata) < 0) {
if (mode == DixUnknownAccess)
return Success;
if (errno == EACCES)
return BadAccess;
ErrorF("SELinux: avc_has_perm: unexpected error %d\n", errno);
return BadValue;
}
return Success;
}
static void
SELinuxLabelClient(ClientPtr client)
{
int fd = XaceGetConnectionNumber(client);
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
security_context_t ctx;
subj = dixLookupPrivate(&client->devPrivates, subjectKey);
obj = dixLookupPrivate(&client->devPrivates, objectKey);
if (fd < 0 || getpeercon_raw(fd, &ctx) < 0) {
ctx = SELinuxDefaultClientLabel();
}
if (XaceIsLocal(client)) {
struct ucred creds;
socklen_t len = sizeof(creds);
char path[PATH_MAX + 1];
size_t bytes;
memset(&creds, 0, sizeof(creds));
if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &creds, &len) < 0)
goto finish;
snprintf(path, PATH_MAX + 1, "/proc/%d/cmdline", creds.pid);
fd = open(path, O_RDONLY);
if (fd < 0)
goto finish;
bytes = read(fd, path, PATH_MAX + 1);
close(fd);
if (bytes <= 0)
goto finish;
strncpy(subj->command, path, COMMAND_LEN - 1);
}
finish:
if (avc_context_to_sid_raw(ctx, &subj->sid) < 0)
FatalError("SELinux: client %d: context_to_sid_raw(%s) failed\n",
client->index, ctx);
obj->sid = subj->sid;
freecon(ctx);
}
static void
SELinuxLabelInitial(void)
{
int i;
XaceScreenAccessRec srec;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
security_context_t ctx;
pointer unused;
subj = dixLookupPrivate(&serverClient->devPrivates, subjectKey);
obj = dixLookupPrivate(&serverClient->devPrivates, objectKey);
subj->privileged = 1;
if (getcon_raw(&ctx) < 0)
FatalError("SELinux: couldn't get context of X server process\n");
if (avc_context_to_sid_raw(ctx, &subj->sid) < 0)
FatalError("SELinux: serverClient: context_to_sid(%s) failed\n", ctx);
obj->sid = subj->sid;
freecon(ctx);
srec.client = serverClient;
srec.access_mode = DixCreateAccess;
srec.status = Success;
for (i = 0; i < screenInfo.numScreens; i++) {
srec.screen = screenInfo.screens[i];
SELinuxScreen(NULL, NULL, &srec);
dixLookupResourceByType(&unused, screenInfo.screens[i]->defColormap,
RT_COLORMAP, serverClient, DixCreateAccess);
}
}
static int
SELinuxLabelResource(XaceResourceAccessRec *rec, SELinuxSubjectRec *subj,
SELinuxObjectRec *obj, security_class_t class)
{
int offset;
security_id_t tsid;
if (rec->rtype & RC_DRAWABLE && subj->win_create_sid) {
obj->sid = subj->win_create_sid;
return Success;
}
if (rec->parent)
offset = dixLookupPrivateOffset(rec->ptype);
if (rec->parent && offset >= 0) {
PrivateRec **privatePtr = DEVPRIV_AT(rec->parent, offset);
SELinuxObjectRec *pobj = dixLookupPrivate(privatePtr, objectKey);
tsid = pobj->sid;
} else {
tsid = subj->sid;
}
if (avc_compute_create(subj->sid, tsid, class, &obj->sid) < 0) {
ErrorF("SELinux: a compute_create call failed!\n");
return BadValue;
}
return Success;
}
static int
SELinuxAudit(void *auditdata,
security_class_t class,
char *msgbuf,
size_t msgbufsize)
{
SELinuxAuditRec *audit = auditdata;
ClientPtr client = audit->client;
char idNum[16];
const char *propertyName, *selectionName;
int major = -1, minor = -1;
if (client) {
REQUEST(xReq);
if (stuff) {
major = stuff->reqType;
minor = MinorOpcodeOfRequest(client);
}
}
if (audit->id)
snprintf(idNum, 16, "%x", audit->id);
propertyName = audit->property ? NameForAtom(audit->property) : NULL;
selectionName = audit->selection ? NameForAtom(audit->selection) : NULL;
return snprintf(msgbuf, msgbufsize,
"%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
(major >= 0) ? "request=" : "",
(major >= 0) ? LookupRequestName(major, minor) : "",
audit->command ? " comm=" : "",
audit->command ? audit->command : "",
audit->dev ? " xdevice=\"" : "",
audit->dev ? audit->dev->name : "",
audit->dev ? "\"" : "",
audit->id ? " resid=" : "",
audit->id ? idNum : "",
audit->restype ? " restype=" : "",
audit->restype ? LookupResourceName(audit->restype) : "",
audit->event ? " event=" : "",
audit->event ? LookupEventName(audit->event & 127) : "",
audit->property ? " property=" : "",
audit->property ? propertyName : "",
audit->selection ? " selection=" : "",
audit->selection ? selectionName : "",
audit->extension ? " extension=" : "",
audit->extension ? audit->extension : "");
}
static int
SELinuxLog(int type, const char *fmt, ...)
{
va_list ap;
char buf[MAX_AUDIT_MESSAGE_LENGTH];
int rc, aut;
switch (type) {
case SELINUX_INFO:
aut = AUDIT_USER_MAC_POLICY_LOAD;
break;
case SELINUX_AVC:
aut = AUDIT_USER_AVC;
break;
default:
aut = AUDIT_USER_SELINUX_ERR;
break;
}
va_start(ap, fmt);
vsnprintf(buf, MAX_AUDIT_MESSAGE_LENGTH, fmt, ap);
rc = audit_log_user_avc_message(audit_fd, aut, buf, NULL, NULL, NULL, 0);
va_end(ap);
LogMessageVerb(X_WARNING, 0, "%s", buf);
return 0;
}
static void
SELinuxDevice(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceDeviceAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client, .dev = rec->dev };
security_class_t cls;
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->dev->devPrivates, objectKey);
if (rec->access_mode & DixCreateAccess) {
SELinuxSubjectRec *dsubj;
dsubj = dixLookupPrivate(&rec->dev->devPrivates, subjectKey);
if (subj->dev_create_sid) {
obj->sid = subj->dev_create_sid;
dsubj->sid = subj->dev_create_sid;
} else {
obj->sid = subj->sid;
dsubj->sid = subj->sid;
}
}
cls = IsPointerDevice(rec->dev) ? SECCLASS_X_POINTER : SECCLASS_X_KEYBOARD;
rc = SELinuxDoCheck(subj, obj, cls, rec->access_mode, &auditdata);
if (rc != Success)
rec->status = rc;
}
static void
SELinuxSend(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceSendAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj, ev_sid;
SELinuxAuditRec auditdata = { .client = rec->client, .dev = rec->dev };
security_class_t class;
int rc, i, type;
if (rec->dev)
subj = dixLookupPrivate(&rec->dev->devPrivates, subjectKey);
else
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->pWin->devPrivates, objectKey);
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_DRAWABLE, DixSendAccess,
&auditdata);
if (rc != Success)
goto err;
for (i = 0; i < rec->count; i++) {
type = rec->events[i].u.u.type;
class = (type & 128) ? SECCLASS_X_FAKEEVENT : SECCLASS_X_EVENT;
rc = SELinuxEventToSID(type, obj->sid, &ev_sid);
if (rc != Success)
goto err;
auditdata.event = type;
rc = SELinuxDoCheck(subj, &ev_sid, class, DixSendAccess, &auditdata);
if (rc != Success)
goto err;
}
return;
err:
rec->status = rc;
}
static void
SELinuxReceive(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceReceiveAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj, ev_sid;
SELinuxAuditRec auditdata = { .client = NULL };
security_class_t class;
int rc, i, type;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->pWin->devPrivates, objectKey);
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_DRAWABLE, DixReceiveAccess,
&auditdata);
if (rc != Success)
goto err;
for (i = 0; i < rec->count; i++) {
type = rec->events[i].u.u.type;
class = (type & 128) ? SECCLASS_X_FAKEEVENT : SECCLASS_X_EVENT;
rc = SELinuxEventToSID(type, obj->sid, &ev_sid);
if (rc != Success)
goto err;
auditdata.event = type;
rc = SELinuxDoCheck(subj, &ev_sid, class, DixReceiveAccess, &auditdata);
if (rc != Success)
goto err;
}
return;
err:
rec->status = rc;
}
static void
SELinuxExtension(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceExtAccessRec *rec = calldata;
SELinuxSubjectRec *subj, *serv;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client };
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->ext->devPrivates, objectKey);
if (obj->sid == NULL) {
security_id_t sid;
serv = dixLookupPrivate(&serverClient->devPrivates, subjectKey);
rc = SELinuxExtensionToSID(rec->ext->name, &sid);
if (rc != Success) {
rec->status = rc;
return;
}
if (avc_compute_create(serv->sid, sid, SECCLASS_X_EXTENSION,
&obj->sid) < 0) {
ErrorF("SELinux: a SID transition call failed!\n");
rec->status = BadValue;
return;
}
}
auditdata.extension = rec->ext->name;
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_EXTENSION, rec->access_mode,
&auditdata);
if (rc != Success)
rec->status = rc;
}
static void
SELinuxSelection(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceSelectionAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj, *data;
Selection *pSel = *rec->ppSel;
Atom name = pSel->selection;
Mask access_mode = rec->access_mode;
SELinuxAuditRec auditdata = { .client = rec->client, .selection = name };
security_id_t tsid;
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&pSel->devPrivates, objectKey);
if (access_mode & DixCreateAccess) {
rc = SELinuxSelectionToSID(name, subj, &obj->sid, &obj->poly);
if (rc != Success)
obj->sid = unlabeled_sid;
access_mode = DixSetAttrAccess;
}
else if (obj->poly) {
rc = SELinuxSelectionToSID(name, subj, &tsid, NULL);
if (rc != Success) {
rec->status = rc;
return;
}
while (pSel->selection != name || obj->sid != tsid) {
if ((pSel = pSel->next) == NULL)
break;
obj = dixLookupPrivate(&pSel->devPrivates, objectKey);
}
if (pSel)
*rec->ppSel = pSel;
else {
rec->status = BadMatch;
return;
}
}
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_SELECTION, access_mode,
&auditdata);
if (rc != Success)
rec->status = rc;
if (access_mode & DixSetAttrAccess) {
data = dixLookupPrivate(&pSel->devPrivates, dataKey);
if (subj->sel_create_sid)
data->sid = subj->sel_create_sid;
else
data->sid = obj->sid;
}
}
static void
SELinuxProperty(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XacePropertyAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj, *data;
PropertyPtr pProp = *rec->ppProp;
Atom name = pProp->propertyName;
SELinuxAuditRec auditdata = { .client = rec->client, .property = name };
security_id_t tsid;
int rc;
if (rec->access_mode & DixPostAccess)
return;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&pProp->devPrivates, objectKey);
if (rec->access_mode & DixCreateAccess) {
rc = SELinuxPropertyToSID(name, subj, &obj->sid, &obj->poly);
if (rc != Success) {
rec->status = rc;
return;
}
}
else if (obj->poly) {
rc = SELinuxPropertyToSID(name, subj, &tsid, NULL);
if (rc != Success) {
rec->status = rc;
return;
}
while (pProp->propertyName != name || obj->sid != tsid) {
if ((pProp = pProp->next) == NULL)
break;
obj = dixLookupPrivate(&pProp->devPrivates, objectKey);
}
if (pProp)
*rec->ppProp = pProp;
else {
rec->status = BadMatch;
return;
}
}
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_PROPERTY, rec->access_mode,
&auditdata);
if (rc != Success)
rec->status = rc;
if (rec->access_mode & DixWriteAccess) {
data = dixLookupPrivate(&pProp->devPrivates, dataKey);
if (subj->prp_create_sid)
data->sid = subj->prp_create_sid;
else
data->sid = obj->sid;
}
}
static void
SELinuxResource(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceResourceAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client };
Mask access_mode = rec->access_mode;
PrivateRec **privatePtr;
security_class_t class;
int rc, offset;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
offset = dixLookupPrivateOffset(rec->rtype);
if (offset < 0) {
class = SECCLASS_X_RESOURCE;
privatePtr = &clients[CLIENT_ID(rec->id)]->devPrivates;
obj = dixLookupPrivate(privatePtr, objectKey);
} else {
class = SELinuxTypeToClass(rec->rtype);
privatePtr = DEVPRIV_AT(rec->res, offset);
obj = dixLookupPrivate(privatePtr, objectKey);
}
if (access_mode & DixCreateAccess && offset >= 0) {
rc = SELinuxLabelResource(rec, subj, obj, class);
if (rc != Success) {
rec->status = rc;
return;
}
}
if (class == SECCLASS_X_RESOURCE) {
access_mode = !!(rec->access_mode & SELinuxReadMask);
access_mode |= !!(rec->access_mode & ~SELinuxReadMask) << 1;
}
auditdata.restype = rec->rtype;
auditdata.id = rec->id;
rc = SELinuxDoCheck(subj, obj, class, access_mode, &auditdata);
if (rc != Success)
rec->status = rc;
if (access_mode & DixCreateAccess && rec->rtype == RT_WINDOW) {
rc = SELinuxDoCheck(subj, obj, class, DixBlendAccess, &auditdata);
if (rc != Success)
((WindowPtr)rec->res)->forcedBG = TRUE;
}
}
static void
SELinuxScreen(CallbackListPtr *pcbl, pointer is_saver, pointer calldata)
{
XaceScreenAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client };
Mask access_mode = rec->access_mode;
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->screen->devPrivates, objectKey);
if (access_mode & DixCreateAccess) {
if (avc_compute_create(subj->sid, subj->sid, SECCLASS_X_SCREEN,
&obj->sid) < 0) {
ErrorF("SELinux: a compute_create call failed!\n");
rec->status = BadValue;
return;
}
}
if (is_saver)
access_mode <<= 2;
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_SCREEN, access_mode, &auditdata);
if (rc != Success)
rec->status = rc;
}
static void
SELinuxClient(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceClientAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client };
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&rec->target->devPrivates, objectKey);
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_CLIENT, rec->access_mode,
&auditdata);
if (rc != Success)
rec->status = rc;
}
static void
SELinuxServer(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
XaceServerAccessRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
SELinuxAuditRec auditdata = { .client = rec->client };
int rc;
subj = dixLookupPrivate(&rec->client->devPrivates, subjectKey);
obj = dixLookupPrivate(&serverClient->devPrivates, objectKey);
rc = SELinuxDoCheck(subj, obj, SECCLASS_X_SERVER, rec->access_mode,
&auditdata);
if (rc != Success)
rec->status = rc;
}
static void
SELinuxClientState(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
NewClientInfoRec *pci = calldata;
switch (pci->client->clientState) {
case ClientStateInitial:
SELinuxLabelClient(pci->client);
break;
default:
break;
}
}
static void
SELinuxResourceState(CallbackListPtr *pcbl, pointer unused, pointer calldata)
{
ResourceStateInfoRec *rec = calldata;
SELinuxSubjectRec *subj;
SELinuxObjectRec *obj;
WindowPtr pWin;
if (rec->type != RT_WINDOW)
return;
if (rec->state != ResourceStateAdding)
return;
pWin = (WindowPtr)rec->value;
subj = dixLookupPrivate(&wClient(pWin)->devPrivates, subjectKey);
if (subj->sid) {
security_context_t ctx;
int rc = avc_sid_to_context_raw(subj->sid, &ctx);
if (rc < 0)
FatalError("SELinux: Failed to get security context!\n");
rc = dixChangeWindowProperty(serverClient,
pWin, atom_client_ctx, XA_STRING, 8,
PropModeReplace, strlen(ctx), ctx, FALSE);
if (rc != Success)
FatalError("SELinux: Failed to set label property on window!\n");
freecon(ctx);
} else
FatalError("SELinux: Unexpected unlabeled client found\n");
obj = dixLookupPrivate(&pWin->devPrivates, objectKey);
if (obj->sid) {
security_context_t ctx;
int rc = avc_sid_to_context_raw(obj->sid, &ctx);
if (rc < 0)
FatalError("SELinux: Failed to get security context!\n");
rc = dixChangeWindowProperty(serverClient,
pWin, atom_ctx, XA_STRING, 8,
PropModeReplace, strlen(ctx), ctx, FALSE);
if (rc != Success)
FatalError("SELinux: Failed to set label property on window!\n");
freecon(ctx);
} else
FatalError("SELinux: Unexpected unlabeled window found\n");
}
static int netlink_fd;
static void
SELinuxBlockHandler(void *data, struct timeval **tv, void *read_mask)
{
}
static void
SELinuxWakeupHandler(void *data, int err, void *read_mask)
{
if (FD_ISSET(netlink_fd, (fd_set *)read_mask))
avc_netlink_check_nb();
}
void
SELinuxFlaskReset(void)
{
DeleteCallback(&ClientStateCallback, SELinuxClientState, NULL);
DeleteCallback(&ResourceStateCallback, SELinuxResourceState, NULL);
XaceDeleteCallback(XACE_EXT_DISPATCH, SELinuxExtension, NULL);
XaceDeleteCallback(XACE_RESOURCE_ACCESS, SELinuxResource, NULL);
XaceDeleteCallback(XACE_DEVICE_ACCESS, SELinuxDevice, NULL);
XaceDeleteCallback(XACE_PROPERTY_ACCESS, SELinuxProperty, NULL);
XaceDeleteCallback(XACE_SEND_ACCESS, SELinuxSend, NULL);
XaceDeleteCallback(XACE_RECEIVE_ACCESS, SELinuxReceive, NULL);
XaceDeleteCallback(XACE_CLIENT_ACCESS, SELinuxClient, NULL);
XaceDeleteCallback(XACE_EXT_ACCESS, SELinuxExtension, NULL);
XaceDeleteCallback(XACE_SERVER_ACCESS, SELinuxServer, NULL);
XaceDeleteCallback(XACE_SELECTION_ACCESS, SELinuxSelection, NULL);
XaceDeleteCallback(XACE_SCREEN_ACCESS, SELinuxScreen, NULL);
XaceDeleteCallback(XACE_SCREENSAVER_ACCESS, SELinuxScreen, truep);
audit_close(audit_fd);
avc_netlink_release_fd();
RemoveBlockAndWakeupHandlers(SELinuxBlockHandler, SELinuxWakeupHandler,
NULL);
RemoveGeneralSocket(netlink_fd);
avc_destroy();
}
void
SELinuxFlaskInit(void)
{
struct selinux_opt avc_option = { AVC_OPT_SETENFORCE, (char *)0 };
security_context_t ctx;
int ret = TRUE;
switch(selinuxEnforcingState) {
case SELINUX_MODE_ENFORCING:
LogMessage(X_INFO, "SELinux: Configured in enforcing mode\n");
avc_option.value = (char *)1;
break;
case SELINUX_MODE_PERMISSIVE:
LogMessage(X_INFO, "SELinux: Configured in permissive mode\n");
avc_option.value = (char *)0;
break;
default:
avc_option.type = AVC_OPT_UNUSED;
break;
}
selinux_set_callback(SELINUX_CB_LOG, (union selinux_callback)SELinuxLog);
selinux_set_callback(SELINUX_CB_AUDIT, (union selinux_callback)SELinuxAudit);
if (selinux_set_mapping(map) < 0) {
if (errno == EINVAL) {
ErrorF("SELinux: Invalid object class mapping, disabling SELinux support.\n");
return;
}
FatalError("SELinux: Failed to set up security class mapping\n");
}
if (avc_open(&avc_option, 1) < 0)
FatalError("SELinux: Couldn't initialize SELinux userspace AVC\n");
if (security_get_initial_context_raw("unlabeled", &ctx) < 0)
FatalError("SELinux: Failed to look up unlabeled context\n");
if (avc_context_to_sid_raw(ctx, &unlabeled_sid) < 0)
FatalError("SELinux: a context_to_SID call failed!\n");
freecon(ctx);
audit_fd = audit_open();
if (audit_fd < 0)
FatalError("SELinux: Failed to open the system audit log\n");
if (!dixRegisterPrivateKey(subjectKey, PRIVATE_XSELINUX, sizeof(SELinuxSubjectRec)) ||
!dixRegisterPrivateKey(objectKey, PRIVATE_XSELINUX, sizeof(SELinuxObjectRec)) ||
!dixRegisterPrivateKey(dataKey, PRIVATE_XSELINUX, sizeof(SELinuxObjectRec)))
FatalError("SELinux: Failed to allocate private storage.\n");
atom_ctx = MakeAtom("_SELINUX_CONTEXT", 16, TRUE);
if (atom_ctx == BAD_RESOURCE)
FatalError("SELinux: Failed to create atom\n");
atom_client_ctx = MakeAtom("_SELINUX_CLIENT_CONTEXT", 23, TRUE);
if (atom_client_ctx == BAD_RESOURCE)
FatalError("SELinux: Failed to create atom\n");
netlink_fd = avc_netlink_acquire_fd();
AddGeneralSocket(netlink_fd);
RegisterBlockAndWakeupHandlers(SELinuxBlockHandler, SELinuxWakeupHandler,
NULL);
ret &= AddCallback(&ClientStateCallback, SELinuxClientState, NULL);
ret &= AddCallback(&ResourceStateCallback, SELinuxResourceState, NULL);
ret &= XaceRegisterCallback(XACE_EXT_DISPATCH, SELinuxExtension, NULL);
ret &= XaceRegisterCallback(XACE_RESOURCE_ACCESS, SELinuxResource, NULL);
ret &= XaceRegisterCallback(XACE_DEVICE_ACCESS, SELinuxDevice, NULL);
ret &= XaceRegisterCallback(XACE_PROPERTY_ACCESS, SELinuxProperty, NULL);
ret &= XaceRegisterCallback(XACE_SEND_ACCESS, SELinuxSend, NULL);
ret &= XaceRegisterCallback(XACE_RECEIVE_ACCESS, SELinuxReceive, NULL);
ret &= XaceRegisterCallback(XACE_CLIENT_ACCESS, SELinuxClient, NULL);
ret &= XaceRegisterCallback(XACE_EXT_ACCESS, SELinuxExtension, NULL);
ret &= XaceRegisterCallback(XACE_SERVER_ACCESS, SELinuxServer, NULL);
ret &= XaceRegisterCallback(XACE_SELECTION_ACCESS, SELinuxSelection, NULL);
ret &= XaceRegisterCallback(XACE_SCREEN_ACCESS, SELinuxScreen, NULL);
ret &= XaceRegisterCallback(XACE_SCREENSAVER_ACCESS, SELinuxScreen, truep);
if (!ret)
FatalError("SELinux: Failed to register one or more callbacks\n");
SELinuxLabelInitial();
}