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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Browse source 
Pull security subsystem updates from James Morris:

  SELinux/LSM:
   - overlayfs support, necessary for container filesystems

  LSM:
   - finally remove the kernel_module_from_file hook

  Smack:
   - treat signal delivery as an 'append' operation

  TPM:
   - lots of bugfixes & updates

  Audit:
   - new audit data type: LSM_AUDIT_DATA_FILE

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (47 commits)
  Revert "tpm/tpm_crb: implement tpm crb idle state"
  Revert "tmp/tpm_crb: fix Intel PTT hw bug during idle state"
  Revert "tpm/tpm_crb: open code the crb_init into acpi_add"
  Revert "tmp/tpm_crb: implement runtime pm for tpm_crb"
  lsm,audit,selinux: Introduce a new audit data type LSM_AUDIT_DATA_FILE
  tmp/tpm_crb: implement runtime pm for tpm_crb
  tpm/tpm_crb: open code the crb_init into acpi_add
  tmp/tpm_crb: fix Intel PTT hw bug during idle state
  tpm/tpm_crb: implement tpm crb idle state
  tpm: add check for minimum buffer size in tpm_transmit()
  tpm: constify TPM 1.x header structures
  tpm/tpm_crb: fix the over 80 characters checkpatch warring
  tpm/tpm_crb: drop useless cpu_to_le32 when writing to registers
  tpm/tpm_crb: cache cmd_size register value.
  tmp/tpm_crb: drop include to platform_device
  tpm/tpm_tis: remove unused itpm variable
  tpm_crb: fix incorrect values of cmdReady and goIdle bits
  tpm_crb: refine the naming of constants
  tpm_crb: remove wmb()'s
  tpm_crb: fix crb_req_canceled behavior
  ...
This commit is contained in:
Linus Torvalds 2016-10-04 14:48:27 -07:00
commit a3443cda55
26 changed files with 436 additions and 253 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/char/tpm/st33zp24/st33zp24.c
View file

@ -589,8 +589,6 @@ int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops,
chip->flags |= TPM_CHIP_FLAG_IRQ;
disable_irq_nosync(tpm_dev->irq);
tpm_gen_interrupt(chip);
}
return tpm_chip_register(chip);

2
drivers/char/tpm/tpm-dev.c
View file

@ -145,7 +145,7 @@ static ssize_t tpm_write(struct file *file, const char __user *buf,
return -EPIPE;
}
out_size = tpm_transmit(priv->chip, priv->data_buffer,
sizeof(priv->data_buffer));
sizeof(priv->data_buffer), 0);
tpm_put_ops(priv->chip);
if (out_size < 0) {

84
drivers/char/tpm/tpm-interface.c
View file

@ -330,13 +330,16 @@ EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
/*
* Internal kernel interface to transmit TPM commands
*/
ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
size_t bufsiz)
ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
unsigned int flags)
{
ssize_t rc;
u32 count, ordinal;
unsigned long stop;
if (bufsiz < TPM_HEADER_SIZE)
return -EINVAL;
if (bufsiz > TPM_BUFSIZE)
bufsiz = TPM_BUFSIZE;
@ -350,7 +353,8 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
return -E2BIG;
}
mutex_lock(&chip->tpm_mutex);
if (!(flags & TPM_TRANSMIT_UNLOCKED))
mutex_lock(&chip->tpm_mutex);
rc = chip->ops->send(chip, (u8 *) buf, count);
if (rc < 0) {
@ -393,20 +397,21 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
dev_err(&chip->dev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
out:
mutex_unlock(&chip->tpm_mutex);
if (!(flags & TPM_TRANSMIT_UNLOCKED))
mutex_unlock(&chip->tpm_mutex);
return rc;
}
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd,
int len, const char *desc)
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd,
int len, unsigned int flags, const char *desc)
{
struct tpm_output_header *header;
const struct tpm_output_header *header;
int err;
len = tpm_transmit(chip, (u8 *) cmd, len);
len = tpm_transmit(chip, (const u8 *)cmd, len, flags);
if (len < 0)
return len;
else if (len < TPM_HEADER_SIZE)
@ -453,26 +458,13 @@ ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap,
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = subcap_id;
}
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, desc);
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
desc);
if (!rc)
*cap = tpm_cmd.params.getcap_out.cap;
return rc;
}
void tpm_gen_interrupt(struct tpm_chip *chip)
{
struct tpm_cmd_t tpm_cmd;
ssize_t rc;
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
"attempting to determine the timeouts");
}
EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
EXPORT_SYMBOL_GPL(tpm_getcap);
#define TPM_ORD_STARTUP cpu_to_be32(153)
#define TPM_ST_CLEAR cpu_to_be16(1)
@ -490,7 +482,7 @@ static int tpm_startup(struct tpm_chip *chip, __be16 startup_type)
start_cmd.header.in = tpm_startup_header;
start_cmd.params.startup_in.startup_type = startup_type;
return tpm_transmit_cmd(chip, &start_cmd, TPM_INTERNAL_RESULT_SIZE,
return tpm_transmit_cmd(chip, &start_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
"attempting to start the TPM");
}
@ -521,7 +513,8 @@ int tpm_get_timeouts(struct tpm_chip *chip)
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, NULL);
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
NULL);
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
@ -535,7 +528,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
NULL);
0, NULL);
}
if (rc) {
dev_err(&chip->dev,
@ -596,7 +589,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_DURATION;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
"attempting to determine the durations");
if (rc)
return rc;
@ -633,7 +626,7 @@ EXPORT_SYMBOL_GPL(tpm_get_timeouts);
#define TPM_ORD_CONTINUE_SELFTEST 83
#define CONTINUE_SELFTEST_RESULT_SIZE 10
static struct tpm_input_header continue_selftest_header = {
static const struct tpm_input_header continue_selftest_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(10),
.ordinal = cpu_to_be32(TPM_ORD_CONTINUE_SELFTEST),
@ -652,14 +645,14 @@ static int tpm_continue_selftest(struct tpm_chip *chip)
struct tpm_cmd_t cmd;
cmd.header.in = continue_selftest_header;
rc = tpm_transmit_cmd(chip, &cmd, CONTINUE_SELFTEST_RESULT_SIZE,
rc = tpm_transmit_cmd(chip, &cmd, CONTINUE_SELFTEST_RESULT_SIZE, 0,
"continue selftest");
return rc;
}
#define TPM_ORDINAL_PCRREAD cpu_to_be32(21)
#define READ_PCR_RESULT_SIZE 30
static struct tpm_input_header pcrread_header = {
static const struct tpm_input_header pcrread_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(14),
.ordinal = TPM_ORDINAL_PCRREAD
@ -672,7 +665,7 @@ int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
cmd.header.in = pcrread_header;
cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx);
rc = tpm_transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE,
rc = tpm_transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE, 0,
"attempting to read a pcr value");
if (rc == 0)
@ -745,7 +738,7 @@ EXPORT_SYMBOL_GPL(tpm_pcr_read);
*/
#define TPM_ORD_PCR_EXTEND cpu_to_be32(20)
#define EXTEND_PCR_RESULT_SIZE 34
static struct tpm_input_header pcrextend_header = {
static const struct tpm_input_header pcrextend_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(34),
.ordinal = TPM_ORD_PCR_EXTEND
@ -770,7 +763,7 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
cmd.header.in = pcrextend_header;
cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(pcr_idx);
memcpy(cmd.params.pcrextend_in.hash, hash, TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE, 0,
"attempting extend a PCR value");
tpm_put_ops(chip);
@ -792,7 +785,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
unsigned int loops;
unsigned int delay_msec = 100;
unsigned long duration;
struct tpm_cmd_t cmd;
u8 dummy[TPM_DIGEST_SIZE];
duration = tpm_calc_ordinal_duration(chip, TPM_ORD_CONTINUE_SELFTEST);
@ -807,9 +800,8 @@ int tpm_do_selftest(struct tpm_chip *chip)
do {
/* Attempt to read a PCR value */
cmd.header.in = pcrread_header;
cmd.params.pcrread_in.pcr_idx = cpu_to_be32(0);
rc = tpm_transmit(chip, (u8 *) &cmd, READ_PCR_RESULT_SIZE);
rc = tpm_pcr_read_dev(chip, 0, dummy);
/* Some buggy TPMs will not respond to tpm_tis_ready() for
* around 300ms while the self test is ongoing, keep trying
* until the self test duration expires. */
@ -824,7 +816,6 @@ int tpm_do_selftest(struct tpm_chip *chip)
if (rc < TPM_HEADER_SIZE)
return -EFAULT;
rc = be32_to_cpu(cmd.header.out.return_code);
if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
dev_info(&chip->dev,
"TPM is disabled/deactivated (0x%X)\n", rc);
@ -879,7 +870,7 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen)
if (chip == NULL)
return -ENODEV;
rc = tpm_transmit_cmd(chip, cmd, buflen, "attempting tpm_cmd");
rc = tpm_transmit_cmd(chip, cmd, buflen, 0, "attempting tpm_cmd");
tpm_put_ops(chip);
return rc;
@ -949,7 +940,7 @@ EXPORT_SYMBOL_GPL(wait_for_tpm_stat);
#define TPM_ORD_SAVESTATE cpu_to_be32(152)
#define SAVESTATE_RESULT_SIZE 10
static struct tpm_input_header savestate_header = {
static const struct tpm_input_header savestate_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(10),
.ordinal = TPM_ORD_SAVESTATE
@ -981,14 +972,15 @@ int tpm_pm_suspend(struct device *dev)
cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(tpm_suspend_pcr);
memcpy(cmd.params.pcrextend_in.hash, dummy_hash,
TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE, 0,
"extending dummy pcr before suspend");
}
/* now do the actual savestate */
for (try = 0; try < TPM_RETRY; try++) {
cmd.header.in = savestate_header;
rc = tpm_transmit_cmd(chip, &cmd, SAVESTATE_RESULT_SIZE, NULL);
rc = tpm_transmit_cmd(chip, &cmd, SAVESTATE_RESULT_SIZE, 0,
NULL);
/*
* If the TPM indicates that it is too busy to respond to
@ -1032,7 +1024,7 @@ int tpm_pm_resume(struct device *dev)
EXPORT_SYMBOL_GPL(tpm_pm_resume);
#define TPM_GETRANDOM_RESULT_SIZE 18
static struct tpm_input_header tpm_getrandom_header = {
static const struct tpm_input_header tpm_getrandom_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(14),
.ordinal = TPM_ORD_GET_RANDOM
@ -1072,8 +1064,8 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
tpm_cmd.params.getrandom_in.num_bytes = cpu_to_be32(num_bytes);
err = tpm_transmit_cmd(chip, &tpm_cmd,
TPM_GETRANDOM_RESULT_SIZE + num_bytes,
"attempting get random");
TPM_GETRANDOM_RESULT_SIZE + num_bytes,
0, "attempting get random");
if (err)
break;

4
drivers/char/tpm/tpm-sysfs.c
View file

@ -22,7 +22,7 @@
#define READ_PUBEK_RESULT_SIZE 314
#define TPM_ORD_READPUBEK cpu_to_be32(124)
static struct tpm_input_header tpm_readpubek_header = {
static const struct tpm_input_header tpm_readpubek_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(30),
.ordinal = TPM_ORD_READPUBEK
@ -39,7 +39,7 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
struct tpm_chip *chip = to_tpm_chip(dev);
tpm_cmd.header.in = tpm_readpubek_header;
err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,
err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE, 0,
"attempting to read the PUBEK");
if (err)
goto out;

46
drivers/char/tpm/tpm.h
View file

@ -476,32 +476,35 @@ extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;
extern struct idr dev_nums_idr;
enum tpm_transmit_flags {
TPM_TRANSMIT_UNLOCKED = BIT(0),
};
ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
unsigned int flags);
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd, int len,
unsigned int flags, const char *desc);
ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap,
const char *desc);
ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
size_t bufsiz);
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
const char *desc);
extern int tpm_get_timeouts(struct tpm_chip *);
extern void tpm_gen_interrupt(struct tpm_chip *);
int tpm_get_timeouts(struct tpm_chip *);
int tpm1_auto_startup(struct tpm_chip *chip);
extern int tpm_do_selftest(struct tpm_chip *);
extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
extern int tpm_pm_suspend(struct device *);
extern int tpm_pm_resume(struct device *);
extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
wait_queue_head_t *, bool);
int tpm_do_selftest(struct tpm_chip *chip);
unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev);
int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
wait_queue_head_t *queue, bool check_cancel);
struct tpm_chip *tpm_chip_find_get(int chip_num);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);
extern struct tpm_chip *tpm_chip_alloc(struct device *dev,
const struct tpm_class_ops *ops);
extern struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
const struct tpm_class_ops *ops);
extern int tpm_chip_register(struct tpm_chip *chip);
extern void tpm_chip_unregister(struct tpm_chip *chip);
struct tpm_chip *tpm_chip_alloc(struct device *dev,
const struct tpm_class_ops *ops);
struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
const struct tpm_class_ops *ops);
int tpm_chip_register(struct tpm_chip *chip);
void tpm_chip_unregister(struct tpm_chip *chip);
void tpm_sysfs_add_device(struct tpm_chip *chip);
@ -528,8 +531,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
u32 *value, const char *desc);
int tpm2_auto_startup(struct tpm_chip *chip);
extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
extern int tpm2_gen_interrupt(struct tpm_chip *chip);
extern int tpm2_probe(struct tpm_chip *chip);
void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm2_probe(struct tpm_chip *chip);
#endif

121
drivers/char/tpm/tpm2-cmd.c
View file

@ -282,7 +282,7 @@ int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
sizeof(cmd.params.pcrread_in.pcr_select));
cmd.params.pcrread_in.pcr_select[pcr_idx >> 3] = 1 << (pcr_idx & 0x7);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting to read a pcr value");
if (rc == 0) {
buf = cmd.params.pcrread_out.digest;
@ -330,7 +330,7 @@ int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
cmd.params.pcrextend_in.hash_alg = cpu_to_be16(TPM2_ALG_SHA1);
memcpy(cmd.params.pcrextend_in.digest, hash, TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting extend a PCR value");
return rc;
@ -376,7 +376,7 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max)
cmd.header.in = tpm2_getrandom_header;
cmd.params.getrandom_in.size = cpu_to_be16(num_bytes);
err = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
err = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting get random");
if (err)
break;
@ -434,12 +434,12 @@ static void tpm2_buf_append_auth(struct tpm_buf *buf, u32 session_handle,
}
/**
* tpm2_seal_trusted() - seal a trusted key
* @chip_num: A specific chip number for the request or TPM_ANY_NUM
* @options: authentication values and other options
* tpm2_seal_trusted() - seal the payload of a trusted key
* @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
* @options: authentication values and other options
*
* Returns < 0 on error and 0 on success.
* Return: < 0 on error and 0 on success.
*/
int tpm2_seal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
@ -512,7 +512,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
goto out;
}
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "sealing data");
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, 0, "sealing data");
if (rc)
goto out;
@ -538,10 +538,18 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
return rc;
}
static int tpm2_load(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options,
u32 *blob_handle)
/**
* tpm2_load_cmd() - execute a TPM2_Load command
* @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
* @options: authentication values and other options
*
* Return: same as with tpm_transmit_cmd
*/
static int tpm2_load_cmd(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options,
u32 *blob_handle, unsigned int flags)
{
struct tpm_buf buf;
unsigned int private_len;
@ -576,7 +584,7 @@ static int tpm2_load(struct tpm_chip *chip,
goto out;
}
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "loading blob");
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags, "loading blob");
if (!rc)
*blob_handle = be32_to_cpup(
(__be32 *) &buf.data[TPM_HEADER_SIZE]);
@ -590,7 +598,16 @@ static int tpm2_load(struct tpm_chip *chip,
return rc;
}
static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
/**
* tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
* @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
* @options: authentication values and other options
*
* Return: same as with tpm_transmit_cmd
*/
static void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
unsigned int flags)
{
struct tpm_buf buf;
int rc;
@ -604,7 +621,8 @@ static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
tpm_buf_append_u32(&buf, handle);
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "flushing context");
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags,
"flushing context");
if (rc)
dev_warn(&chip->dev, "0x%08x was not flushed, rc=%d\n", handle,
rc);
@ -612,10 +630,18 @@ static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
tpm_buf_destroy(&buf);
}
static int tpm2_unseal(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options,
u32 blob_handle)
/**
* tpm2_unseal_cmd() - execute a TPM2_Unload command
* @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
* @options: authentication values and other options
*
* Return: same as with tpm_transmit_cmd
*/
static int tpm2_unseal_cmd(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options,
u32 blob_handle, unsigned int flags)
{
struct tpm_buf buf;
u16 data_len;
@ -635,7 +661,7 @@ static int tpm2_unseal(struct tpm_chip *chip,
options->blobauth /* hmac */,
TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "unsealing");
rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags, "unsealing");
if (rc > 0)
rc = -EPERM;
@ -654,12 +680,12 @@ static int tpm2_unseal(struct tpm_chip *chip,
}
/**
* tpm_unseal_trusted() - unseal a trusted key
* @chip_num: A specific chip number for the request or TPM_ANY_NUM
* @options: authentication values and other options
* tpm_unseal_trusted() - unseal the payload of a trusted key
* @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
* @options: authentication values and other options
*
* Returns < 0 on error and 0 on success.
* Return: < 0 on error and 0 on success.
*/
int tpm2_unseal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
@ -668,14 +694,17 @@ int tpm2_unseal_trusted(struct tpm_chip *chip,
u32 blob_handle;
int rc;
rc = tpm2_load(chip, payload, options, &blob_handle);
mutex_lock(&chip->tpm_mutex);
rc = tpm2_load_cmd(chip, payload, options, &blob_handle,
TPM_TRANSMIT_UNLOCKED);
if (rc)
return rc;
rc = tpm2_unseal(chip, payload, options, blob_handle);
tpm2_flush_context(chip, blob_handle);
goto out;
rc = tpm2_unseal_cmd(chip, payload, options, blob_handle,
TPM_TRANSMIT_UNLOCKED);
tpm2_flush_context_cmd(chip, blob_handle, TPM_TRANSMIT_UNLOCKED);
out:
mutex_unlock(&chip->tpm_mutex);
return rc;
}
@ -701,12 +730,13 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, u32 *value,
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(property_id);
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), desc);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, desc);
if (!rc)
*value = be32_to_cpu(cmd.params.get_tpm_pt_out.value);
return rc;
}
EXPORT_SYMBOL_GPL(tpm2_get_tpm_pt);
#define TPM2_STARTUP_IN_SIZE \
(sizeof(struct tpm_input_header) + \
@ -735,7 +765,7 @@ static int tpm2_startup(struct tpm_chip *chip, u16 startup_type)
cmd.header.in = tpm2_startup_header;
cmd.params.startup_in.startup_type = cpu_to_be16(startup_type);
return tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
return tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting to start the TPM");
}
@ -763,7 +793,7 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
cmd.header.in = tpm2_shutdown_header;
cmd.params.startup_in.startup_type = cpu_to_be16(shutdown_type);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), "stopping the TPM");
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, "stopping the TPM");
/* In places where shutdown command is sent there's no much we can do
* except print the error code on a system failure.
@ -828,7 +858,7 @@ static int tpm2_start_selftest(struct tpm_chip *chip, bool full)
cmd.header.in = tpm2_selftest_header;
cmd.params.selftest_in.full_test = full;
rc = tpm_transmit_cmd(chip, &cmd, TPM2_SELF_TEST_IN_SIZE,
rc = tpm_transmit_cmd(chip, &cmd, TPM2_SELF_TEST_IN_SIZE, 0,
"continue selftest");
/* At least some prototype chips seem to give RC_TESTING error
@ -880,7 +910,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
cmd.params.pcrread_in.pcr_select[1] = 0x00;
cmd.params.pcrread_in.pcr_select[2] = 0x00;
rc = tpm_transmit_cmd(chip, (u8 *) &cmd, sizeof(cmd), NULL);
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, NULL);
if (rc < 0)
break;
@ -894,23 +924,6 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
return rc;
}
/**
* tpm2_gen_interrupt() - generate an interrupt
* @chip: TPM chip to use
*
* 0 is returned when the operation is successful. If a negative number is
* returned it remarks a POSIX error code. If a positive number is returned
* it remarks a TPM error.
*/
int tpm2_gen_interrupt(struct tpm_chip *chip)
{
u32 dummy;
return tpm2_get_tpm_pt(chip, 0x100, &dummy,
"attempting to generate an interrupt");
}
EXPORT_SYMBOL_GPL(tpm2_gen_interrupt);
/**
* tpm2_probe() - probe TPM 2.0
* @chip: TPM chip to use
@ -928,11 +941,9 @@ int tpm2_probe(struct tpm_chip *chip)
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(0x100);
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
rc = tpm_transmit(chip, (const char *) &cmd, sizeof(cmd));
rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, NULL);
if (rc < 0)
return rc;
else if (rc < TPM_HEADER_SIZE)
return -EFAULT;
if (be16_to_cpu(cmd.header.out.tag) == TPM2_ST_NO_SESSIONS)
chip->flags |= TPM_CHIP_FLAG_TPM2;

50
drivers/char/tpm/tpm_crb.c
View file

@ -19,7 +19,6 @@
#include <linux/highmem.h>
#include <linux/rculist.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "tpm.h"
#define ACPI_SIG_TPM2 "TPM2"
@ -34,14 +33,14 @@ enum crb_defaults {
CRB_ACPI_START_INDEX = 1,
};
enum crb_ca_request {
CRB_CA_REQ_GO_IDLE = BIT(0),
CRB_CA_REQ_CMD_READY = BIT(1),
enum crb_ctrl_req {
CRB_CTRL_REQ_CMD_READY = BIT(0),
CRB_CTRL_REQ_GO_IDLE = BIT(1),
};
enum crb_ca_status {
CRB_CA_STS_ERROR = BIT(0),
CRB_CA_STS_TPM_IDLE = BIT(1),
enum crb_ctrl_sts {
CRB_CTRL_STS_ERROR = BIT(0),
CRB_CTRL_STS_TPM_IDLE = BIT(1),
};
enum crb_start {
@ -67,7 +66,7 @@ struct crb_control_area {
} __packed;
enum crb_status {
CRB_STS_COMPLETE = BIT(0),
CRB_DRV_STS_COMPLETE = BIT(0),
};
enum crb_flags {
@ -81,6 +80,7 @@ struct crb_priv {
struct crb_control_area __iomem *cca;
u8 __iomem *cmd;
u8 __iomem *rsp;
u32 cmd_size;
};
static SIMPLE_DEV_PM_OPS(crb_pm, tpm_pm_suspend, tpm_pm_resume);
@ -92,7 +92,7 @@ static u8 crb_status(struct tpm_chip *chip)
if ((ioread32(&priv->cca->start) & CRB_START_INVOKE) !=
CRB_START_INVOKE)
sts |= CRB_STS_COMPLETE;
sts |= CRB_DRV_STS_COMPLETE;
return sts;
}
@ -106,7 +106,7 @@ static int crb_recv(struct tpm_chip *chip, u8 *buf, size_t count)
if (count < 6)
return -EIO;
if (ioread32(&priv->cca->sts) & CRB_CA_STS_ERROR)
if (ioread32(&priv->cca->sts) & CRB_CTRL_STS_ERROR)
return -EIO;
memcpy_fromio(buf, priv->rsp, 6);
@ -142,11 +142,14 @@ static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
int rc = 0;
if (len > ioread32(&priv->cca->cmd_size)) {
dev_err(&chip->dev,
"invalid command count value %x %zx\n",
(unsigned int) len,
(size_t) ioread32(&priv->cca->cmd_size));
/* Zero the cancel register so that the next command will not get
* canceled.
*/
iowrite32(0, &priv->cca->cancel);
if (len > priv->cmd_size) {
dev_err(&chip->dev, "invalid command count value %zd %d\n",
len, priv->cmd_size);
return -E2BIG;
}
@ -156,7 +159,7 @@ static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
wmb();
if (priv->flags & CRB_FL_CRB_START)
iowrite32(cpu_to_le32(CRB_START_INVOKE), &priv->cca->start);
iowrite32(CRB_START_INVOKE, &priv->cca->start);
if (priv->flags & CRB_FL_ACPI_START)
rc = crb_do_acpi_start(chip);
@ -168,15 +171,10 @@ static void crb_cancel(struct tpm_chip *chip)
{
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
iowrite32(cpu_to_le32(CRB_CANCEL_INVOKE), &priv->cca->cancel);
/* Make sure that cmd is populated before issuing cancel. */
wmb();
iowrite32(CRB_CANCEL_INVOKE, &priv->cca->cancel);
if ((priv->flags & CRB_FL_ACPI_START) && crb_do_acpi_start(chip))
dev_err(&chip->dev, "ACPI Start failed\n");
iowrite32(0, &priv->cca->cancel);
}
static bool crb_req_canceled(struct tpm_chip *chip, u8 status)
@ -194,8 +192,8 @@ static const struct tpm_class_ops tpm_crb = {
.send = crb_send,
.cancel = crb_cancel,
.req_canceled = crb_req_canceled,
.req_complete_mask = CRB_STS_COMPLETE,
.req_complete_val = CRB_STS_COMPLETE,
.req_complete_mask = CRB_DRV_STS_COMPLETE,
.req_complete_val = CRB_DRV_STS_COMPLETE,
};
static int crb_init(struct acpi_device *device, struct crb_priv *priv)
@ -265,8 +263,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
acpi_dev_free_resource_list(&resources);
if (resource_type(&io_res) != IORESOURCE_MEM) {
dev_err(dev,
FW_BUG "TPM2 ACPI table does not define a memory resource\n");
dev_err(dev, FW_BUG "TPM2 ACPI table does not define a memory resource\n");
return -EINVAL;
}
@ -302,6 +299,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
dev_err(dev, FW_BUG "overlapping command and response buffer sizes are not identical");
return -EINVAL;
}
priv->cmd_size = cmd_size;
priv->rsp = priv->cmd;
return 0;

24
drivers/char/tpm/tpm_tis_core.c
View file

@ -440,7 +440,6 @@ static int probe_itpm(struct tpm_chip *chip)
0x00, 0x00, 0x00, 0xf1
};
size_t len = sizeof(cmd_getticks);
bool itpm;
u16 vendor;
rc = tpm_tis_read16(priv, TPM_DID_VID(0), &vendor);
@ -451,8 +450,6 @@ static int probe_itpm(struct tpm_chip *chip)
if (vendor != TPM_VID_INTEL)
return 0;
itpm = false;
rc = tpm_tis_send_data(chip, cmd_getticks, len);
if (rc == 0)
goto out;
@ -460,8 +457,6 @@ static int probe_itpm(struct tpm_chip *chip)
tpm_tis_ready(chip);
release_locality(chip, priv->locality, 0);
itpm = true;
rc = tpm_tis_send_data(chip, cmd_getticks, len);
if (rc == 0) {
dev_info(&chip->dev, "Detected an iTPM.\n");
@ -526,6 +521,18 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id)
return IRQ_HANDLED;
}
static int tpm_tis_gen_interrupt(struct tpm_chip *chip)
{
const char *desc = "attempting to generate an interrupt";
u32 cap2;
cap_t cap;
if (chip->flags & TPM_CHIP_FLAG_TPM2)
return tpm2_get_tpm_pt(chip, 0x100, &cap2, desc);
else
return tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc);
}
/* Register the IRQ and issue a command that will cause an interrupt. If an
* irq is seen then leave the chip setup for IRQ operation, otherwise reverse
* everything and leave in polling mode. Returns 0 on success.
@ -575,10 +582,9 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
/* Generate an interrupt by having the core call through to
* tpm_tis_send
*/
if (chip->flags & TPM_CHIP_FLAG_TPM2)
tpm2_gen_interrupt(chip);
else
tpm_gen_interrupt(chip);
rc = tpm_tis_gen_interrupt(chip);
if (rc < 0)
return rc;
/* tpm_tis_send will either confirm the interrupt is working or it
* will call disable_irq which undoes all of the above.

22
fs/overlayfs/copy_up.c
View file

@ -105,6 +105,13 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
goto retry;
}
error = security_inode_copy_up_xattr(name);
if (error < 0 && error != -EOPNOTSUPP)
break;
if (error == 1) {
error = 0;
continue; /* Discard */
}
error = vfs_setxattr(new, name, value, size, 0);
if (error)
break;
@ -248,6 +255,8 @@ static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir,
struct dentry *upper = NULL;
umode_t mode = stat->mode;
int err;
const struct cred *old_creds = NULL;
struct cred *new_creds = NULL;
newdentry = ovl_lookup_temp(workdir, dentry);
err = PTR_ERR(newdentry);
@ -260,10 +269,23 @@ static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir,
if (IS_ERR(upper))
goto out1;
err = security_inode_copy_up(dentry, &new_creds);
if (err < 0)
goto out2;
if (new_creds)
old_creds = override_creds(new_creds);
/* Can't properly set mode on creation because of the umask */
stat->mode &= S_IFMT;
err = ovl_create_real(wdir, newdentry, stat, link, NULL, true);
stat->mode = mode;
if (new_creds) {
revert_creds(old_creds);
put_cred(new_creds);
}
if (err)
goto out2;

10
fs/overlayfs/dir.c
View file

@ -489,6 +489,15 @@ static int ovl_create_or_link(struct dentry *dentry, struct inode *inode,
if (override_cred) {
override_cred->fsuid = inode->i_uid;
override_cred->fsgid = inode->i_gid;
if (!hardlink) {
err = security_dentry_create_files_as(dentry,
stat->mode, &dentry->d_name, old_cred,
override_cred);
if (err) {
put_cred(override_cred);
goto out_revert_creds;
}
}
put_cred(override_creds(override_cred));
put_cred(override_cred);
@ -499,6 +508,7 @@ static int ovl_create_or_link(struct dentry *dentry, struct inode *inode,
err = ovl_create_over_whiteout(dentry, inode, stat,
link, hardlink);
}
out_revert_creds:
revert_creds(old_cred);
if (!err) {
struct inode *realinode = d_inode(ovl_dentry_upper(dentry));

2
include/linux/lsm_audit.h
View file

@ -59,6 +59,7 @@ struct common_audit_data {
#define LSM_AUDIT_DATA_INODE 9
#define LSM_AUDIT_DATA_DENTRY 10
#define LSM_AUDIT_DATA_IOCTL_OP 11
#define LSM_AUDIT_DATA_FILE 12
union {
struct path path;
struct dentry *dentry;
@ -75,6 +76,7 @@ struct common_audit_data {
#endif
char *kmod_name;
struct lsm_ioctlop_audit *op;
struct file *file;
} u;
/* this union contains LSM specific data */
union {

37
include/linux/lsm_hooks.h
View file

@ -151,6 +151,16 @@
* @name name of the last path component used to create file
* @ctx pointer to place the pointer to the resulting context in.
* @ctxlen point to place the length of the resulting context.
* @dentry_create_files_as:
* Compute a context for a dentry as the inode is not yet available
* and set that context in passed in creds so that new files are
* created using that context. Context is calculated using the
* passed in creds and not the creds of the caller.
* @dentry dentry to use in calculating the context.
* @mode mode used to determine resource type.
* @name name of the last path component used to create file
* @old creds which should be used for context calculation
* @new creds to modify
*
*
* Security hooks for inode operations.
@ -401,6 +411,23 @@
* @inode contains a pointer to the inode.
* @secid contains a pointer to the location where result will be saved.
* In case of failure, @secid will be set to zero.
* @inode_copy_up:
* A file is about to be copied up from lower layer to upper layer of
* overlay filesystem. Security module can prepare a set of new creds
* and modify as need be and return new creds. Caller will switch to
* new creds temporarily to create new file and release newly allocated
* creds.
* @src indicates the union dentry of file that is being copied up.
* @new pointer to pointer to return newly allocated creds.
* Returns 0 on success or a negative error code on error.
* @inode_copy_up_xattr:
* Filter the xattrs being copied up when a unioned file is copied
* up from a lower layer to the union/overlay layer.
* @name indicates the name of the xattr.
* Returns 0 to accept the xattr, 1 to discard the xattr, -EOPNOTSUPP if
* security module does not know about attribute or a negative error code
* to abort the copy up. Note that the caller is responsible for reading
* and writing the xattrs as this hook is merely a filter.
*
* Security hooks for file operations
*
@ -1358,6 +1385,10 @@ union security_list_options {
int (*dentry_init_security)(struct dentry *dentry, int mode,
const struct qstr *name, void **ctx,
u32 *ctxlen);
int (*dentry_create_files_as)(struct dentry *dentry, int mode,
struct qstr *name,
const struct cred *old,
struct cred *new);
#ifdef CONFIG_SECURITY_PATH
@ -1425,6 +1456,8 @@ union security_list_options {
int (*inode_listsecurity)(struct inode *inode, char *buffer,
size_t buffer_size);
void (*inode_getsecid)(struct inode *inode, u32 *secid);
int (*inode_copy_up)(struct dentry *src, struct cred **new);
int (*inode_copy_up_xattr)(const char *name);
int (*file_permission)(struct file *file, int mask);
int (*file_alloc_security)(struct file *file);
@ -1455,7 +1488,6 @@ union security_list_options {
int (*kernel_act_as)(struct cred *new, u32 secid);
int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
int (*kernel_module_request)(char *kmod_name);
int (*kernel_module_from_file)(struct file *file);
int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id);
int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size,
enum kernel_read_file_id id);
@ -1656,6 +1688,7 @@ struct security_hook_heads {
struct list_head sb_clone_mnt_opts;
struct list_head sb_parse_opts_str;
struct list_head dentry_init_security;
struct list_head dentry_create_files_as;
#ifdef CONFIG_SECURITY_PATH
struct list_head path_unlink;
struct list_head path_mkdir;
@ -1696,6 +1729,8 @@ struct security_hook_heads {
struct list_head inode_setsecurity;
struct list_head inode_listsecurity;
struct list_head inode_getsecid;
struct list_head inode_copy_up;
struct list_head inode_copy_up_xattr;
struct list_head file_permission;
struct list_head file_alloc_security;
struct list_head file_free_security;

25
include/linux/security.h
View file

@ -242,6 +242,10 @@ int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
int security_dentry_init_security(struct dentry *dentry, int mode,
const struct qstr *name, void **ctx,
u32 *ctxlen);
int security_dentry_create_files_as(struct dentry *dentry, int mode,
struct qstr *name,
const struct cred *old,
struct cred *new);
int security_inode_alloc(struct inode *inode);
void security_inode_free(struct inode *inode);
@ -282,6 +286,8 @@ int security_inode_getsecurity(struct inode *inode, const char *name, void **buf
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
void security_inode_getsecid(struct inode *inode, u32 *secid);
int security_inode_copy_up(struct dentry *src, struct cred **new);
int security_inode_copy_up_xattr(const char *name);
int security_file_permission(struct file *file, int mask);
int security_file_alloc(struct file *file);
void security_file_free(struct file *file);
@ -307,7 +313,6 @@ void security_transfer_creds(struct cred *new, const struct cred *old);
int security_kernel_act_as(struct cred *new, u32 secid);
int security_kernel_create_files_as(struct cred *new, struct inode *inode);
int security_kernel_module_request(char *kmod_name);
int security_kernel_module_from_file(struct file *file);
int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
enum kernel_read_file_id id);
@ -598,6 +603,14 @@ static inline int security_dentry_init_security(struct dentry *dentry,
return -EOPNOTSUPP;
}
static inline int security_dentry_create_files_as(struct dentry *dentry,
int mode, struct qstr *name,
const struct cred *old,
struct cred *new)
{
return 0;
}
static inline int security_inode_init_security(struct inode *inode,
struct inode *dir,
@ -758,6 +771,16 @@ static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
*secid = 0;
}
static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
{
return 0;
}
static inline int security_inode_copy_up_xattr(const char *name)
{
return -EOPNOTSUPP;
}
static inline int security_file_permission(struct file *file, int mask)
{
return 0;

17
security/lsm_audit.c
View file

@ -99,7 +99,7 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
}
return ret;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
/**
* ipv6_skb_to_auditdata : fill auditdata from skb
* @skb : the skb
@ -245,6 +245,19 @@ static void dump_common_audit_data(struct audit_buffer *ab,
}
break;
}
case LSM_AUDIT_DATA_FILE: {
struct inode *inode;
audit_log_d_path(ab, " path=", &a->u.file->f_path);
inode = file_inode(a->u.file);
if (inode) {
audit_log_format(ab, " dev=");
audit_log_untrustedstring(ab, inode->i_sb->s_id);
audit_log_format(ab, " ino=%lu", inode->i_ino);
}
break;
}
case LSM_AUDIT_DATA_IOCTL_OP: {
struct inode *inode;
@ -257,7 +270,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
audit_log_format(ab, " ino=%lu", inode->i_ino);
}
audit_log_format(ab, " ioctlcmd=%hx", a->u.op->cmd);
audit_log_format(ab, " ioctlcmd=0x%hx", a->u.op->cmd);
break;
}
case LSM_AUDIT_DATA_DENTRY: {

27
security/security.c
View file

@ -364,6 +364,15 @@ int security_dentry_init_security(struct dentry *dentry, int mode,
}
EXPORT_SYMBOL(security_dentry_init_security);
int security_dentry_create_files_as(struct dentry *dentry, int mode,
struct qstr *name,
const struct cred *old, struct cred *new)
{
return call_int_hook(dentry_create_files_as, 0, dentry, mode,
name, old, new);
}
EXPORT_SYMBOL(security_dentry_create_files_as);
int security_inode_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr,
const initxattrs initxattrs, void *fs_data)
@ -748,6 +757,18 @@ void security_inode_getsecid(struct inode *inode, u32 *secid)
call_void_hook(inode_getsecid, inode, secid);
}
int security_inode_copy_up(struct dentry *src, struct cred **new)
{
return call_int_hook(inode_copy_up, 0, src, new);
}
EXPORT_SYMBOL(security_inode_copy_up);
int security_inode_copy_up_xattr(const char *name)
{
return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
}
EXPORT_SYMBOL(security_inode_copy_up_xattr);
int security_file_permission(struct file *file, int mask)
{
int ret;
@ -1623,6 +1644,8 @@ struct security_hook_heads security_hook_heads = {
LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str),
.dentry_init_security =
LIST_HEAD_INIT(security_hook_heads.dentry_init_security),
.dentry_create_files_as =
LIST_HEAD_INIT(security_hook_heads.dentry_create_files_as),
#ifdef CONFIG_SECURITY_PATH
.path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink),
.path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir),
@ -1684,6 +1707,10 @@ struct security_hook_heads security_hook_heads = {
LIST_HEAD_INIT(security_hook_heads.inode_listsecurity),
.inode_getsecid =
LIST_HEAD_INIT(security_hook_heads.inode_getsecid),
.inode_copy_up =
LIST_HEAD_INIT(security_hook_heads.inode_copy_up),
.inode_copy_up_xattr =
LIST_HEAD_INIT(security_hook_heads.inode_copy_up_xattr),
.file_permission =
LIST_HEAD_INIT(security_hook_heads.file_permission),
.file_alloc_security =

38
security/selinux/Kconfig
View file

@ -93,41 +93,3 @@ config SECURITY_SELINUX_CHECKREQPROT_VALUE
via /selinux/checkreqprot if authorized by policy.
If you are unsure how to answer this question, answer 0.
config SECURITY_SELINUX_POLICYDB_VERSION_MAX
bool "NSA SELinux maximum supported policy format version"
depends on SECURITY_SELINUX
default n
help
This option enables the maximum policy format version supported
by SELinux to be set to a particular value. This value is reported
to userspace via /selinux/policyvers and used at policy load time.
It can be adjusted downward to support legacy userland (init) that
does not correctly handle kernels that support newer policy versions.
Examples:
For the Fedora Core 3 or 4 Linux distributions, enable this option
and set the value via the next option. For Fedora Core 5 and later,
do not enable this option.
If you are unsure how to answer this question, answer N.
config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
int "NSA SELinux maximum supported policy format version value"
depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
range 15 23
default 19
help
This option sets the value for the maximum policy format version
supported by SELinux.
Examples:
For Fedora Core 3, use 18.
For Fedora Core 4, use 19.
If you are unsure how to answer this question, look for the
policy format version supported by your policy toolchain, by
running 'checkpolicy -V'. Or look at what policy you have
installed under /etc/selinux/$SELINUXTYPE/policy, where
SELINUXTYPE is defined in your /etc/selinux/config.

106
security/selinux/hooks.c
View file

@ -1761,8 +1761,8 @@ static inline int file_path_has_perm(const struct cred *cred,
{
struct common_audit_data ad;
ad.type = LSM_AUDIT_DATA_PATH;
ad.u.path = file->f_path;
ad.type = LSM_AUDIT_DATA_FILE;
ad.u.file = file;
return inode_has_perm(cred, file_inode(file), av, &ad);
}
@ -1784,8 +1784,8 @@ static int file_has_perm(const struct cred *cred,
u32 sid = cred_sid(cred);
int rc;
ad.type = LSM_AUDIT_DATA_PATH;
ad.u.path = file->f_path;
ad.type = LSM_AUDIT_DATA_FILE;
ad.u.file = file;
if (sid != fsec->sid) {
rc = avc_has_perm(sid, fsec->sid,
@ -1808,13 +1808,13 @@ static int file_has_perm(const struct cred *cred,
/*
* Determine the label for an inode that might be unioned.
*/
static int selinux_determine_inode_label(struct inode *dir,
const struct qstr *name,
u16 tclass,
u32 *_new_isid)
static int
selinux_determine_inode_label(const struct task_security_struct *tsec,
struct inode *dir,
const struct qstr *name, u16 tclass,
u32 *_new_isid)
{
const struct superblock_security_struct *sbsec = dir->i_sb->s_security;
const struct task_security_struct *tsec = current_security();
if ((sbsec->flags & SE_SBINITIALIZED) &&
(sbsec->behavior == SECURITY_FS_USE_MNTPOINT)) {
@ -1857,8 +1857,8 @@ static int may_create(struct inode *dir,
if (rc)
return rc;
rc = selinux_determine_inode_label(dir, &dentry->d_name, tclass,
&newsid);
rc = selinux_determine_inode_label(current_security(), dir,
&dentry->d_name, tclass, &newsid);
if (rc)
return rc;
@ -2365,8 +2365,8 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
new_tsec->sid = old_tsec->sid;
}
ad.type = LSM_AUDIT_DATA_PATH;
ad.u.path = bprm->file->f_path;
ad.type = LSM_AUDIT_DATA_FILE;
ad.u.file = bprm->file;
if (new_tsec->sid == old_tsec->sid) {
rc = avc_has_perm(old_tsec->sid, isec->sid,
@ -2838,7 +2838,8 @@ static int selinux_dentry_init_security(struct dentry *dentry, int mode,
u32 newsid;
int rc;
rc = selinux_determine_inode_label(d_inode(dentry->d_parent), name,
rc = selinux_determine_inode_label(current_security(),
d_inode(dentry->d_parent), name,
inode_mode_to_security_class(mode),
&newsid);
if (rc)
@ -2847,6 +2848,27 @@ static int selinux_dentry_init_security(struct dentry *dentry, int mode,
return security_sid_to_context(newsid, (char **)ctx, ctxlen);
}
static int selinux_dentry_create_files_as(struct dentry *dentry, int mode,
struct qstr *name,
const struct cred *old,
struct cred *new)
{
u32 newsid;
int rc;
struct task_security_struct *tsec;
rc = selinux_determine_inode_label(old->security,
d_inode(dentry->d_parent), name,
inode_mode_to_security_class(mode),
&newsid);
if (rc)
return rc;
tsec = new->security;
tsec->create_sid = newsid;
return 0;
}
static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr,
const char **name,
@ -2863,7 +2885,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
sid = tsec->sid;
newsid = tsec->create_sid;
rc = selinux_determine_inode_label(
rc = selinux_determine_inode_label(current_security(),
dir, qstr,
inode_mode_to_security_class(inode->i_mode),
&newsid);
@ -3293,6 +3315,41 @@ static void selinux_inode_getsecid(struct inode *inode, u32 *secid)
*secid = isec->sid;
}
static int selinux_inode_copy_up(struct dentry *src, struct cred **new)
{
u32 sid;
struct task_security_struct *tsec;
struct cred *new_creds = *new;
if (new_creds == NULL) {
new_creds = prepare_creds();
if (!new_creds)
return -ENOMEM;
}
tsec = new_creds->security;
/* Get label from overlay inode and set it in create_sid */
selinux_inode_getsecid(d_inode(src), &sid);
tsec->create_sid = sid;
*new = new_creds;
return 0;
}
static int selinux_inode_copy_up_xattr(const char *name)
{
/* The copy_up hook above sets the initial context on an inode, but we
* don't then want to overwrite it by blindly copying all the lower
* xattrs up. Instead, we have to filter out SELinux-related xattrs.
*/
if (strcmp(name, XATTR_NAME_SELINUX) == 0)
return 1; /* Discard */
/*
* Any other attribute apart from SELINUX is not claimed, supported
* by selinux.
*/
return -EOPNOTSUPP;
}
/* file security operations */
static int selinux_revalidate_file_permission(struct file *file, int mask)
@ -3776,8 +3833,8 @@ static int selinux_kernel_module_from_file(struct file *file)
/* finit_module */
ad.type = LSM_AUDIT_DATA_PATH;
ad.u.path = file->f_path;
ad.type = LSM_AUDIT_DATA_FILE;
ad.u.file = file;
fsec = file->f_security;
if (sid != fsec->sid) {
@ -3984,7 +4041,7 @@ static int selinux_parse_skb_ipv4(struct sk_buff *skb,
return ret;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
/* Returns error only if unable to parse addresses */
static int selinux_parse_skb_ipv6(struct sk_buff *skb,
@ -4075,7 +4132,7 @@ static int selinux_parse_skb(struct sk_buff *skb, struct common_audit_data *ad,
&ad->u.net->v4info.daddr);
goto okay;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
case PF_INET6:
ret = selinux_parse_skb_ipv6(skb, ad, proto);
if (ret)
@ -5029,7 +5086,7 @@ static unsigned int selinux_ipv4_forward(void *priv,
return selinux_ip_forward(skb, state->in, PF_INET);
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
static unsigned int selinux_ipv6_forward(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
@ -5087,7 +5144,7 @@ static unsigned int selinux_ipv4_output(void *priv,
return selinux_ip_output(skb, PF_INET);
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
static unsigned int selinux_ipv6_output(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
@ -5273,7 +5330,7 @@ static unsigned int selinux_ipv4_postroute(void *priv,
return selinux_ip_postroute(skb, state->out, PF_INET);
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
static unsigned int selinux_ipv6_postroute(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
@ -6062,6 +6119,7 @@ static struct security_hook_list selinux_hooks[] = {
LSM_HOOK_INIT(sb_parse_opts_str, selinux_parse_opts_str),
LSM_HOOK_INIT(dentry_init_security, selinux_dentry_init_security),
LSM_HOOK_INIT(dentry_create_files_as, selinux_dentry_create_files_as),
LSM_HOOK_INIT(inode_alloc_security, selinux_inode_alloc_security),
LSM_HOOK_INIT(inode_free_security, selinux_inode_free_security),
@ -6088,6 +6146,8 @@ static struct security_hook_list selinux_hooks[] = {
LSM_HOOK_INIT(inode_setsecurity, selinux_inode_setsecurity),
LSM_HOOK_INIT(inode_listsecurity, selinux_inode_listsecurity),
LSM_HOOK_INIT(inode_getsecid, selinux_inode_getsecid),
LSM_HOOK_INIT(inode_copy_up, selinux_inode_copy_up),
LSM_HOOK_INIT(inode_copy_up_xattr, selinux_inode_copy_up_xattr),
LSM_HOOK_INIT(file_permission, selinux_file_permission),
LSM_HOOK_INIT(file_alloc_security, selinux_file_alloc_security),
@ -6317,7 +6377,7 @@ static struct nf_hook_ops selinux_nf_ops[] = {
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP_PRI_SELINUX_FIRST,
},
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
{
.hook = selinux_ipv6_postroute,
.pf = NFPROTO_IPV6,

4
security/selinux/include/security.h
View file

@ -39,11 +39,7 @@
/* Range of policy versions we understand*/
#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
#else
#define POLICYDB_VERSION_MAX POLICYDB_VERSION_XPERMS_IOCTL
#endif
/* Mask for just the mount related flags */
#define SE_MNTMASK 0x0f

2
security/selinux/ss/conditional.c
View file

@ -242,6 +242,8 @@ int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp)
goto err;
len = le32_to_cpu(buf[2]);
if (((len == 0) || (len == (u32)-1)))
goto err;
rc = -ENOMEM;
key = kmalloc(len + 1, GFP_KERNEL);

3
security/selinux/ss/ebitmap.c
View file

@ -374,6 +374,9 @@ int ebitmap_read(struct ebitmap *e, void *fp)
goto ok;
}
if (e->highbit && !count)
goto bad;
for (i = 0; i < count; i++) {
rc = next_entry(&startbit, fp, sizeof(u32));
if (rc < 0) {

12
security/selinux/ss/policydb.c
View file

@ -541,21 +541,21 @@ static int policydb_index(struct policydb *p)
rc = -ENOMEM;
p->class_val_to_struct =
kmalloc(p->p_classes.nprim * sizeof(*(p->class_val_to_struct)),
kzalloc(p->p_classes.nprim * sizeof(*(p->class_val_to_struct)),
GFP_KERNEL);
if (!p->class_val_to_struct)
goto out;
rc = -ENOMEM;
p->role_val_to_struct =
kmalloc(p->p_roles.nprim * sizeof(*(p->role_val_to_struct)),
kzalloc(p->p_roles.nprim * sizeof(*(p->role_val_to_struct)),
GFP_KERNEL);
if (!p->role_val_to_struct)
goto out;
rc = -ENOMEM;
p->user_val_to_struct =
kmalloc(p->p_users.nprim * sizeof(*(p->user_val_to_struct)),
kzalloc(p->p_users.nprim * sizeof(*(p->user_val_to_struct)),
GFP_KERNEL);
if (!p->user_val_to_struct)
goto out;
@ -964,7 +964,7 @@ int policydb_context_isvalid(struct policydb *p, struct context *c)
* Role must be authorized for the type.
*/
role = p->role_val_to_struct[c->role - 1];
if (!ebitmap_get_bit(&role->types, c->type - 1))
if (!role || !ebitmap_get_bit(&role->types, c->type - 1))
/* role may not be associated with type */
return 0;
@ -1094,6 +1094,9 @@ static int str_read(char **strp, gfp_t flags, void *fp, u32 len)
int rc;
char *str;
if ((len == 0) || (len == (u32)-1))
return -EINVAL;
str = kmalloc(len + 1, flags);
if (!str)
return -ENOMEM;
@ -2414,6 +2417,7 @@ int policydb_read(struct policydb *p, void *fp)
} else
tr->tclass = p->process_class;
rc = -EINVAL;
if (!policydb_role_isvalid(p, tr->role) ||
!policydb_type_isvalid(p, tr->type) ||
!policydb_class_isvalid(p, tr->tclass) ||

12
security/smack/Kconfig
View file

@ -40,3 +40,15 @@ config SECURITY_SMACK_NETFILTER
This enables security marking of network packets using
Smack labels.
If you are unsure how to answer this question, answer N.
config SECURITY_SMACK_APPEND_SIGNALS
bool "Treat delivering signals as an append operation"
depends on SECURITY_SMACK
default n
help
Sending a signal has been treated as a write operation to the
receiving process. If this option is selected, the delivery
will be an append operation instead. This makes it possible
to differentiate between delivering a network packet and
delivering a signal in the Smack rules.
If you are unsure how to answer this question, answer N.

10
security/smack/smack.h
View file

@ -256,6 +256,16 @@ enum {
#define MAY_LOCK 0x00002000 /* Locks should be writes, but ... */
#define MAY_BRINGUP 0x00004000 /* Report use of this rule */
/*
* The policy for delivering signals is configurable.
* It is usually "write", but can be "append".
*/
#ifdef CONFIG_SECURITY_SMACK_APPEND_SIGNALS
#define MAY_DELIVER MAY_APPEND /* Signal delivery requires append */
#else
#define MAY_DELIVER MAY_WRITE /* Signal delivery requires write */
#endif
#define SMACK_BRINGUP_ALLOW 1 /* Allow bringup mode */
#define SMACK_UNCONFINED_SUBJECT 2 /* Allow unconfined label */
#define SMACK_UNCONFINED_OBJECT 3 /* Allow unconfined label */

14
security/smack/smack_lsm.c
View file

@ -1857,14 +1857,14 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
/* we don't log here as rc can be overriden */
skp = file->f_security;
rc = smk_access(skp, tkp, MAY_WRITE, NULL);
rc = smk_bu_note("sigiotask", skp, tkp, MAY_WRITE, rc);
rc = smk_access(skp, tkp, MAY_DELIVER, NULL);
rc = smk_bu_note("sigiotask", skp, tkp, MAY_DELIVER, rc);
if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
rc = 0;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, tsk);
smack_log(skp->smk_known, tkp->smk_known, MAY_WRITE, rc, &ad);
smack_log(skp->smk_known, tkp->smk_known, MAY_DELIVER, rc, &ad);
return rc;
}
@ -2265,8 +2265,8 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info,
* can write the receiver.
*/
if (secid == 0) {
rc = smk_curacc(tkp, MAY_WRITE, &ad);
rc = smk_bu_task(p, MAY_WRITE, rc);
rc = smk_curacc(tkp, MAY_DELIVER, &ad);
rc = smk_bu_task(p, MAY_DELIVER, rc);
return rc;
}
/*
@ -2275,8 +2275,8 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info,
* we can't take privilege into account.
*/
skp = smack_from_secid(secid);
rc = smk_access(skp, tkp, MAY_WRITE, &ad);
rc = smk_bu_note("USB signal", skp, tkp, MAY_WRITE, rc);
rc = smk_access(skp, tkp, MAY_DELIVER, &ad);
rc = smk_bu_note("USB signal", skp, tkp, MAY_DELIVER, rc);
return rc;
}

4
security/smack/smack_netfilter.c
View file

@ -20,7 +20,7 @@
#include <net/inet_sock.h>
#include "smack.h"
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
static unsigned int smack_ipv6_output(void *priv,
struct sk_buff *skb,
@ -64,7 +64,7 @@ static struct nf_hook_ops smack_nf_ops[] = {
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP_PRI_SELINUX_FIRST,
},
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#if IS_ENABLED(CONFIG_IPV6)
{
.hook = smack_ipv6_output,
.pf = NFPROTO_IPV6,

11
security/smack/smackfs.c
View file

@ -2523,14 +2523,9 @@ static ssize_t smk_write_revoke_subj(struct file *file, const char __user *buf,
if (count == 0 || count > SMK_LONGLABEL)
return -EINVAL;
data = kzalloc(count, GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
if (copy_from_user(data, buf, count) != 0) {
rc = -EFAULT;
goto out_data;
}
data = memdup_user(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
cp = smk_parse_smack(data, count);
if (IS_ERR(cp)) {