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#include "defs.h"
#include <linux/keyctl.h>
typedef int32_t key_serial_t;
static const struct xlat key_spec[] = {
XLAT(KEY_SPEC_THREAD_KEYRING),
XLAT(KEY_SPEC_PROCESS_KEYRING),
XLAT(KEY_SPEC_SESSION_KEYRING),
XLAT(KEY_SPEC_USER_KEYRING),
XLAT(KEY_SPEC_USER_SESSION_KEYRING),
XLAT(KEY_SPEC_GROUP_KEYRING),
XLAT(KEY_SPEC_REQKEY_AUTH_KEY),
XLAT(KEY_SPEC_REQUESTOR_KEYRING),
XLAT_END
};
static void
print_keyring_serial_number(key_serial_t id)
{
const char *str = xlookup(key_spec, id);
if (str)
tprints(str);
else
tprintf("%d", id);
}
int
sys_add_key(struct tcb *tcp)
{
if (entering(tcp)) {
/* type */
printstr(tcp, tcp->u_arg[0], -1);
/* description */
tprints(", ");
printstr(tcp, tcp->u_arg[1], -1);
/* payload */
tprints(", ");
printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
/* payload length */
tprintf(", %lu, ", tcp->u_arg[3]);
/* keyring serial number */
print_keyring_serial_number(tcp->u_arg[4]);
}
return 0;
}
int
sys_request_key(struct tcb *tcp)
{
if (entering(tcp)) {
/* type */
printstr(tcp, tcp->u_arg[0], -1);
/* description */
tprints(", ");
printstr(tcp, tcp->u_arg[1], -1);
/* callout_info */
tprints(", ");
printstr(tcp, tcp->u_arg[2], -1);
/* keyring serial number */
tprints(", ");
print_keyring_serial_number(tcp->u_arg[3]);
}
return 0;
}
static int
keyctl_get_keyring_id(struct tcb *tcp, key_serial_t id, int create)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprintf(", %d", create);
}
return 0;
}
static int
keyctl_join_session_keyring(struct tcb *tcp, long addr)
{
if (entering(tcp)) {
tprints(", ");
printstr(tcp, addr, -1);
}
return 0;
}
static int
keyctl_update_key(struct tcb *tcp, key_serial_t id, long addr, long len)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprints(", ");
printstr(tcp, addr, len);
tprintf(", %lu", len);
}
return 0;
}
static int
keyctl_handle_key(struct tcb *tcp, key_serial_t id)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
}
return 0;
}
static int
keyctl_handle_key_key(struct tcb *tcp, key_serial_t id1, key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprints(", ");
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_read_key(struct tcb *tcp, key_serial_t id, long addr, long len)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprints(", ");
} else {
if (addr && syserror(tcp))
tprintf("%#lx", addr);
else {
long rval = tcp->u_rval > len ?
len : (tcp->u_rval ? -1 : 0);
printstr(tcp, addr, rval);
}
tprintf(", %lu", len);
}
return 0;
}
static int
keyctl_keyring_search(struct tcb *tcp, key_serial_t id1, long addr1,
long addr2, key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprints(", ");
printstr(tcp, addr1, -1);
tprints(", ");
printstr(tcp, addr2, -1);
tprints(", ");
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_chown_key(struct tcb *tcp, key_serial_t id, int user, int group)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprintf(", %d, %d", user, group);
}
return 0;
}
static int
keyctl_instantiate_key(struct tcb *tcp, key_serial_t id1, long addr,
long len, key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprints(", ");
printstr(tcp, addr, len);
tprintf(", %lu, ", len);
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_instantiate_key_iov(struct tcb *tcp, key_serial_t id1,
long addr, long len, key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprints(", ");
tprint_iov(tcp, len, addr, 1);
tprintf(", %lu, ", len);
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_negate_key(struct tcb *tcp, key_serial_t id1, unsigned timeout,
key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprintf(", %u, ", timeout);
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_reject_key(struct tcb *tcp, key_serial_t id1, unsigned timeout,
unsigned error, key_serial_t id2)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id1);
tprintf(", %u, %u, ", timeout, error);
print_keyring_serial_number(id2);
}
return 0;
}
static int
keyctl_set_timeout(struct tcb *tcp, key_serial_t id, unsigned timeout)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprintf(", %u", timeout);
}
return 0;
}
static int
keyctl_get_persistent(struct tcb *tcp, int uid, key_serial_t id)
{
if (entering(tcp)) {
tprintf(", %d, ", uid);
print_keyring_serial_number(id);
}
return 0;
}
#define KEY_POS_VIEW 0x01000000
#define KEY_POS_READ 0x02000000
#define KEY_POS_WRITE 0x04000000
#define KEY_POS_SEARCH 0x08000000
#define KEY_POS_LINK 0x10000000
#define KEY_POS_SETATTR 0x20000000
#define KEY_POS_ALL 0x3f000000
#define KEY_USR_VIEW 0x00010000
#define KEY_USR_READ 0x00020000
#define KEY_USR_WRITE 0x00040000
#define KEY_USR_SEARCH 0x00080000
#define KEY_USR_LINK 0x00100000
#define KEY_USR_SETATTR 0x00200000
#define KEY_USR_ALL 0x003f0000
#define KEY_GRP_VIEW 0x00000100
#define KEY_GRP_READ 0x00000200
#define KEY_GRP_WRITE 0x00000400
#define KEY_GRP_SEARCH 0x00000800
#define KEY_GRP_LINK 0x00001000
#define KEY_GRP_SETATTR 0x00002000
#define KEY_GRP_ALL 0x00003f00
#define KEY_OTH_VIEW 0x00000001
#define KEY_OTH_READ 0x00000002
#define KEY_OTH_WRITE 0x00000004
#define KEY_OTH_SEARCH 0x00000008
#define KEY_OTH_LINK 0x00000010
#define KEY_OTH_SETATTR 0x00000020
#define KEY_OTH_ALL 0x0000003f
static const struct xlat key_perms[] = {
XLAT(KEY_POS_VIEW),
XLAT(KEY_POS_READ),
XLAT(KEY_POS_WRITE),
XLAT(KEY_POS_SEARCH),
XLAT(KEY_POS_LINK),
XLAT(KEY_POS_SETATTR),
XLAT(KEY_POS_ALL),
XLAT(KEY_USR_VIEW),
XLAT(KEY_USR_READ),
XLAT(KEY_USR_WRITE),
XLAT(KEY_USR_SEARCH),
XLAT(KEY_USR_LINK),
XLAT(KEY_USR_SETATTR),
XLAT(KEY_USR_ALL),
XLAT(KEY_GRP_VIEW),
XLAT(KEY_GRP_READ),
XLAT(KEY_GRP_WRITE),
XLAT(KEY_GRP_SEARCH),
XLAT(KEY_GRP_LINK),
XLAT(KEY_GRP_SETATTR),
XLAT(KEY_GRP_ALL),
XLAT(KEY_OTH_VIEW),
XLAT(KEY_OTH_READ),
XLAT(KEY_OTH_WRITE),
XLAT(KEY_OTH_SEARCH),
XLAT(KEY_OTH_LINK),
XLAT(KEY_OTH_SETATTR),
XLAT(KEY_OTH_ALL),
XLAT_END
};
static int
keyctl_setperm_key(struct tcb *tcp, key_serial_t id, uint32_t perm)
{
if (entering(tcp)) {
tprints(", ");
print_keyring_serial_number(id);
tprints(", ");
printflags(key_perms, perm, "KEY_???");
}
return 0;
}
static const struct xlat key_reqkeys[] = {
XLAT(KEY_REQKEY_DEFL_NO_CHANGE),
XLAT(KEY_REQKEY_DEFL_DEFAULT),
XLAT(KEY_REQKEY_DEFL_THREAD_KEYRING),
XLAT(KEY_REQKEY_DEFL_PROCESS_KEYRING),
XLAT(KEY_REQKEY_DEFL_SESSION_KEYRING),
XLAT(KEY_REQKEY_DEFL_USER_KEYRING),
XLAT(KEY_REQKEY_DEFL_USER_SESSION_KEYRING),
XLAT(KEY_REQKEY_DEFL_GROUP_KEYRING),
XLAT(KEY_REQKEY_DEFL_REQUESTOR_KEYRING),
XLAT_END
};
static int
keyctl_set_reqkey_keyring(struct tcb *tcp, int reqkey)
{
if (entering(tcp)) {
tprints(", ");
printxval(key_reqkeys, reqkey, "KEY_REQKEY_DEFL_???");
}
return 0;
}
static const struct xlat keyctl_commands[] = {
XLAT(KEYCTL_GET_KEYRING_ID),
XLAT(KEYCTL_JOIN_SESSION_KEYRING),
XLAT(KEYCTL_UPDATE),
XLAT(KEYCTL_REVOKE),
XLAT(KEYCTL_CHOWN),
XLAT(KEYCTL_SETPERM),
XLAT(KEYCTL_DESCRIBE),
XLAT(KEYCTL_CLEAR),
XLAT(KEYCTL_LINK),
XLAT(KEYCTL_UNLINK),
XLAT(KEYCTL_SEARCH),
XLAT(KEYCTL_READ),
XLAT(KEYCTL_INSTANTIATE),
XLAT(KEYCTL_NEGATE),
XLAT(KEYCTL_SET_REQKEY_KEYRING),
XLAT(KEYCTL_SET_TIMEOUT),
XLAT(KEYCTL_ASSUME_AUTHORITY),
XLAT(KEYCTL_GET_SECURITY),
XLAT(KEYCTL_SESSION_TO_PARENT),
XLAT(KEYCTL_REJECT),
XLAT(KEYCTL_INSTANTIATE_IOV),
XLAT(KEYCTL_INVALIDATE),
XLAT(KEYCTL_GET_PERSISTENT),
XLAT_END
};
int
sys_keyctl(struct tcb *tcp)
{
int cmd = tcp->u_arg[0];
if (entering(tcp))
printxval(keyctl_commands, cmd, "KEYCTL_???");
switch (cmd) {
case KEYCTL_GET_KEYRING_ID:
return keyctl_get_keyring_id(tcp, tcp->u_arg[1], tcp->u_arg[2]);
case KEYCTL_JOIN_SESSION_KEYRING:
return keyctl_join_session_keyring(tcp, tcp->u_arg[1]);
case KEYCTL_UPDATE:
return keyctl_update_key(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3]);
case KEYCTL_REVOKE:
case KEYCTL_CLEAR:
case KEYCTL_INVALIDATE:
case KEYCTL_ASSUME_AUTHORITY:
return keyctl_handle_key(tcp, tcp->u_arg[1]);
case KEYCTL_LINK:
case KEYCTL_UNLINK:
return keyctl_handle_key_key(tcp, tcp->u_arg[1], tcp->u_arg[2]);
case KEYCTL_DESCRIBE:
case KEYCTL_READ:
case KEYCTL_GET_SECURITY:
return keyctl_read_key(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3]);
case KEYCTL_SEARCH:
return keyctl_keyring_search(tcp, tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3], tcp->u_arg[4]);
case KEYCTL_CHOWN:
return keyctl_chown_key(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3]);
case KEYCTL_SETPERM:
return keyctl_setperm_key(tcp, tcp->u_arg[1], tcp->u_arg[2]);
case KEYCTL_INSTANTIATE:
return keyctl_instantiate_key(tcp, tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3], tcp->u_arg[4]);
case KEYCTL_NEGATE:
return keyctl_negate_key(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3]);
case KEYCTL_SET_REQKEY_KEYRING:
return keyctl_set_reqkey_keyring(tcp, tcp->u_arg[1]);
case KEYCTL_SET_TIMEOUT:
return keyctl_set_timeout(tcp, tcp->u_arg[1], tcp->u_arg[2]);
case KEYCTL_SESSION_TO_PARENT:
return 0;
case KEYCTL_REJECT:
return keyctl_reject_key(tcp, tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3], tcp->u_arg[4]);
case KEYCTL_INSTANTIATE_IOV:
return keyctl_instantiate_key_iov(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3],
tcp->u_arg[4]);
case KEYCTL_GET_PERSISTENT:
return keyctl_get_persistent(tcp, tcp->u_arg[1], tcp->u_arg[2]);
default:
if (entering(tcp))
tprintf(", %#lx, %#lx, %#lx, %#lx",
tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3], tcp->u_arg[4]);
}
return 0;
}
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