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Commit 2dee702f authored by Eric Rossman's avatar Eric Rossman Committed by Linus Torvalds
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[PATCH] s390: crypto driver update 

crypto device driver update:

 - Suppress syslog messages for some return codes.

 - Fix incorrect bounds checking in /proc interface.

 - Remove hotplug calls.

 - Remove linux version checks.

 - Remove device workqueue on module unload.
Signed-off-by: default avatarEric Rossman <edrossma@us.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b6d09449
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Showing with 106 additions and 270 deletions
drivers/s390/crypto/z90common.h
View file @ 2dee702f
......@@ -27,7 +27,7 @@
#ifndef _Z90COMMON_H_
#define _Z90COMMON_H_
#define VERSION_Z90COMMON_H "$Revision: 1.16 $"
#define VERSION_Z90COMMON_H "$Revision: 1.17 $"
#define RESPBUFFSIZE 256
......@@ -164,5 +164,4 @@ struct CPRBX {
#define UMIN(a,b) ((a) < (b) ? (a) : (b))
#define IS_EVEN(x) ((x) == (2 * ((x) / 2)))
#endif
drivers/s390/crypto/z90hardware.c
View file @ 2dee702f
......@@ -32,7 +32,7 @@
#include "z90crypt.h"
#include "z90common.h"
#define VERSION_Z90HARDWARE_C "$Revision: 1.33 $"
#define VERSION_Z90HARDWARE_C "$Revision: 1.34 $"
char z90hardware_version[] __initdata =
"z90hardware.o (" VERSION_Z90HARDWARE_C "/"
......@@ -283,48 +283,6 @@ struct type6_msg {
struct CPRB CPRB;
};
union request_msg {
union type4_msg t4msg;
struct type6_msg t6msg;
};
struct request_msg_ext {
int q_nr;
unsigned char *psmid;
union request_msg reqMsg;
};
struct type82_hdr {
unsigned char reserved1;
unsigned char type;
unsigned char reserved2[2];
unsigned char reply_code;
unsigned char reserved3[3];
};
#define TYPE82_RSP_CODE 0x82
#define REPLY_ERROR_MACHINE_FAILURE 0x10
#define REPLY_ERROR_PREEMPT_FAILURE 0x12
#define REPLY_ERROR_CHECKPT_FAILURE 0x14
#define REPLY_ERROR_MESSAGE_TYPE 0x20
#define REPLY_ERROR_INVALID_COMM_CD 0x21
#define REPLY_ERROR_INVALID_MSG_LEN 0x23
#define REPLY_ERROR_RESERVD_FIELD 0x24
#define REPLY_ERROR_FORMAT_FIELD 0x29
#define REPLY_ERROR_INVALID_COMMAND 0x30
#define REPLY_ERROR_MALFORMED_MSG 0x40
#define REPLY_ERROR_RESERVED_FIELDO 0x50
#define REPLY_ERROR_WORD_ALIGNMENT 0x60
#define REPLY_ERROR_MESSAGE_LENGTH 0x80
#define REPLY_ERROR_OPERAND_INVALID 0x82
#define REPLY_ERROR_OPERAND_SIZE 0x84
#define REPLY_ERROR_EVEN_MOD_IN_OPND 0x85
#define REPLY_ERROR_RESERVED_FIELD 0x88
#define REPLY_ERROR_TRANSPORT_FAIL 0x90
#define REPLY_ERROR_PACKET_TRUNCATED 0xA0
#define REPLY_ERROR_ZERO_BUFFER_LEN 0xB0
struct type86_hdr {
unsigned char reserved1;
unsigned char type;
......@@ -338,7 +296,7 @@ struct type86_hdr {
#define TYPE86_FMT2 0x02
struct type86_fmt2_msg {
struct type86_hdr hdr;
struct type86_hdr header;
unsigned char reserved[4];
unsigned char apfs[4];
unsigned int count1;
......@@ -538,6 +496,8 @@ static struct function_and_rules_block static_pke_function_and_rulesX = {
{'M','R','P',' ',' ',' ',' ',' '}
};
static unsigned char static_PKE_function_code[2] = {0x50, 0x4B};
struct T6_keyBlock_hdrX {
unsigned short blen;
unsigned short ulen;
......@@ -688,9 +648,38 @@ static struct cca_public_sec static_cca_pub_sec = {
#define RESPONSE_CPRB_SIZE 0x000006B8
#define RESPONSE_CPRBX_SIZE 0x00000724
#define CALLER_HEADER 12
struct error_hdr {
unsigned char reserved1;
unsigned char type;
unsigned char reserved2[2];
unsigned char reply_code;
unsigned char reserved3[3];
};
static unsigned char static_PKE_function_code[2] = {0x50, 0x4B};
#define TYPE82_RSP_CODE 0x82
#define REP82_ERROR_MACHINE_FAILURE 0x10
#define REP82_ERROR_PREEMPT_FAILURE 0x12
#define REP82_ERROR_CHECKPT_FAILURE 0x14
#define REP82_ERROR_MESSAGE_TYPE 0x20
#define REP82_ERROR_INVALID_COMM_CD 0x21
#define REP82_ERROR_INVALID_MSG_LEN 0x23
#define REP82_ERROR_RESERVD_FIELD 0x24
#define REP82_ERROR_FORMAT_FIELD 0x29
#define REP82_ERROR_INVALID_COMMAND 0x30
#define REP82_ERROR_MALFORMED_MSG 0x40
#define REP82_ERROR_RESERVED_FIELDO 0x50
#define REP82_ERROR_WORD_ALIGNMENT 0x60
#define REP82_ERROR_MESSAGE_LENGTH 0x80
#define REP82_ERROR_OPERAND_INVALID 0x82
#define REP82_ERROR_OPERAND_SIZE 0x84
#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
#define REP82_ERROR_RESERVED_FIELD 0x88
#define REP82_ERROR_TRANSPORT_FAIL 0x90
#define REP82_ERROR_PACKET_TRUNCATED 0xA0
#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
#define CALLER_HEADER 12
static inline int
testq(int q_nr, int *q_depth, int *dev_type, struct ap_status_word *stat)
......@@ -1212,9 +1201,9 @@ send_to_AP(int dev_nr, int cdx, int msg_len, unsigned char *msg_ext)
struct ap_status_word stat_word;
enum devstat stat;
int ccode;
u32 *q_nr_p = (u32 *)msg_ext;
((struct request_msg_ext *) msg_ext)->q_nr =
(dev_nr << SKIP_BITL) + cdx;
*q_nr_p = (dev_nr << SKIP_BITL) + cdx;
PDEBUG("msg_len passed to sen: %d\n", msg_len);
PDEBUG("q number passed to sen: %02x%02x%02x%02x\n",
msg_ext[0], msg_ext[1], msg_ext[2], msg_ext[3]);
......@@ -2104,7 +2093,7 @@ convert_response(unsigned char *response, unsigned char *buffer,
int *respbufflen_p, unsigned char *resp_buff)
{
struct ica_rsa_modexpo *icaMsg_p = (struct ica_rsa_modexpo *) buffer;
struct type82_hdr *t82h_p = (struct type82_hdr *) response;
struct error_hdr *errh_p = (struct error_hdr *) response;
struct type84_hdr *t84h_p = (struct type84_hdr *) response;
struct type86_fmt2_msg *t86m_p = (struct type86_fmt2_msg *) response;
int reply_code, service_rc, service_rs, src_l;
......@@ -2117,12 +2106,13 @@ convert_response(unsigned char *response, unsigned char *buffer,
service_rc = 0;
service_rs = 0;
src_l = 0;
switch (t82h_p->type) {
switch (errh_p->type) {
case TYPE82_RSP_CODE:
reply_code = t82h_p->reply_code;
src_p = (unsigned char *)t82h_p;
PRINTK("Hardware error: Type 82 Message Header: "
reply_code = errh_p->reply_code;
src_p = (unsigned char *)errh_p;
PRINTK("Hardware error: Type %02X Message Header: "
"%02x%02x%02x%02x%02x%02x%02x%02x\n",
errh_p->type,
src_p[0], src_p[1], src_p[2], src_p[3],
src_p[4], src_p[5], src_p[6], src_p[7]);
break;
......@@ -2131,7 +2121,7 @@ convert_response(unsigned char *response, unsigned char *buffer,
src_p = response + (int)t84h_p->len - src_l;
break;
case TYPE86_RSP_CODE:
reply_code = t86m_p->hdr.reply_code;
reply_code = t86m_p->header.reply_code;
if (reply_code != 0)
break;
cprb_p = (struct CPRB *)
......@@ -2143,6 +2133,9 @@ convert_response(unsigned char *response, unsigned char *buffer,
le2toI(cprb_p->ccp_rscode, &service_rs);
if ((service_rc == 8) && (service_rs == 66))
PDEBUG("Bad block format on PCICC\n");
else if ((service_rc == 8) && (service_rs == 65))
PDEBUG("Probably an even modulus on "
"PCICC\n");
else if ((service_rc == 8) && (service_rs == 770)) {
PDEBUG("Invalid key length on PCICC\n");
unset_ext_bitlens();
......@@ -2155,7 +2148,7 @@ convert_response(unsigned char *response, unsigned char *buffer,
return REC_USE_PCICA;
}
else
PRINTK("service rc/rs: %d/%d\n",
PRINTK("service rc/rs (PCICC): %d/%d\n",
service_rc, service_rs);
return REC_OPERAND_INV;
}
......@@ -2169,7 +2162,10 @@ convert_response(unsigned char *response, unsigned char *buffer,
if (service_rc != 0) {
service_rs = (int) cprbx_p->ccp_rscode;
if ((service_rc == 8) && (service_rs == 66))
PDEBUG("Bad block format on PCXICC\n");
PDEBUG("Bad block format on PCIXCC\n");
else if ((service_rc == 8) && (service_rs == 65))
PDEBUG("Probably an even modulus on "
"PCIXCC\n");
else if ((service_rc == 8) && (service_rs == 770)) {
PDEBUG("Invalid key length on PCIXCC\n");
unset_ext_bitlens();
......@@ -2182,7 +2178,7 @@ convert_response(unsigned char *response, unsigned char *buffer,
return REC_USE_PCICA;
}
else
PRINTK("service rc/rs: %d/%d\n",
PRINTK("service rc/rs (PCIXCC): %d/%d\n",
service_rc, service_rs);
return REC_OPERAND_INV;
}
......@@ -2195,20 +2191,25 @@ convert_response(unsigned char *response, unsigned char *buffer,
}
break;
default:
src_p = (unsigned char *)errh_p;
PRINTK("Unrecognized Message Header: "
"%02x%02x%02x%02x%02x%02x%02x%02x\n",
src_p[0], src_p[1], src_p[2], src_p[3],
src_p[4], src_p[5], src_p[6], src_p[7]);
return REC_BAD_MESSAGE;
}
if (reply_code)
switch (reply_code) {
case REPLY_ERROR_OPERAND_INVALID:
case REP82_ERROR_OPERAND_INVALID:
return REC_OPERAND_INV;
case REPLY_ERROR_OPERAND_SIZE:
case REP82_ERROR_OPERAND_SIZE:
return REC_OPERAND_SIZE;
case REPLY_ERROR_EVEN_MOD_IN_OPND:
case REP82_ERROR_EVEN_MOD_IN_OPND:
return REC_EVEN_MOD;
case REPLY_ERROR_MESSAGE_TYPE:
case REP82_ERROR_MESSAGE_TYPE:
return WRONG_DEVICE_TYPE;
case REPLY_ERROR_TRANSPORT_FAIL:
case REP82_ERROR_TRANSPORT_FAIL:
PRINTKW("Transport failed (APFS = %02X%02X%02X%02X)\n",
t86m_p->apfs[0], t86m_p->apfs[1],
t86m_p->apfs[2], t86m_p->apfs[3]);
......@@ -2229,7 +2230,7 @@ convert_response(unsigned char *response, unsigned char *buffer,
PDEBUG("Length returned = %d\n", src_l);
tgt_p = resp_buff + icaMsg_p->outputdatalength - src_l;
memcpy(tgt_p, src_p, src_l);
if ((t82h_p->type == TYPE86_RSP_CODE) && (resp_buff < tgt_p)) {
if ((errh_p->type == TYPE86_RSP_CODE) && (resp_buff < tgt_p)) {
memset(resp_buff, 0, icaMsg_p->outputdatalength - src_l);
if (pad_msg(resp_buff, icaMsg_p->outputdatalength, src_l))
return REC_INVALID_PAD;
......
drivers/s390/crypto/z90main.c
View file @ 2dee702f
......@@ -31,6 +31,7 @@
#include <linux/init.h>
#include <linux/interrupt.h> // for tasklets
#include <linux/ioctl32.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kobject_uevent.h>
......@@ -39,19 +40,8 @@
#include <linux/version.h>
#include "z90crypt.h"
#include "z90common.h"
#ifndef Z90CRYPT_USE_HOTPLUG
#include <linux/miscdevice.h>
#endif
#define VERSION_CODE(vers, rel, seq) (((vers)<<16) | ((rel)<<8) | (seq))
#if LINUX_VERSION_CODE < VERSION_CODE(2,4,0) /* version < 2.4 */
# error "This kernel is too old: not supported"
#endif
#if LINUX_VERSION_CODE > VERSION_CODE(2,7,0) /* version > 2.6 */
# error "This kernel is too recent: not supported by this file"
#endif
#define VERSION_Z90MAIN_C "$Revision: 1.57 $"
#define VERSION_Z90MAIN_C "$Revision: 1.62 $"
static char z90main_version[] __initdata =
"z90main.o (" VERSION_Z90MAIN_C "/"
......@@ -63,21 +53,12 @@ extern char z90hardware_version[];
* Defaults that may be modified.
*/
#ifndef Z90CRYPT_USE_HOTPLUG
/**
* You can specify a different minor at compile time.
*/
#ifndef Z90CRYPT_MINOR
#define Z90CRYPT_MINOR MISC_DYNAMIC_MINOR
#endif
#else
/**
* You can specify a different major at compile time.
*/
#ifndef Z90CRYPT_MAJOR
#define Z90CRYPT_MAJOR 0
#endif
#endif
/**
* You can specify a different domain at compile time or on the insmod
......@@ -97,7 +78,7 @@ extern char z90hardware_version[];
* older than CLEANUPTIME seconds in the past.
*/
#ifndef CLEANUPTIME
#define CLEANUPTIME 20
#define CLEANUPTIME 15
#endif
/**
......@@ -298,6 +279,10 @@ struct z90crypt {
* it contains the request; at READ, the response. The function
* send_to_crypto_device converts the request to device-dependent
* form and use the caller's OPEN-allocated buffer for the response.
*
* For the contents of caller_dev_dep_req and caller_dev_dep_req_p
* because that points to it, see the discussion in z90hardware.c.
* Search for "extended request message block".
*/
struct caller {
int caller_buf_l; // length of original request
......@@ -397,25 +382,10 @@ static int z90crypt_status(char *, char **, off_t, int, int *, void *);
static int z90crypt_status_write(struct file *, const char __user *,
unsigned long, void *);
/**
* Hotplug support
*/
#ifdef Z90CRYPT_USE_HOTPLUG
#define Z90CRYPT_HOTPLUG_ADD 1
#define Z90CRYPT_HOTPLUG_REMOVE 2
static void z90crypt_hotplug_event(int, int, int);
#endif
/**
* Storage allocated at initialization and used throughout the life of
* this insmod
*/
#ifdef Z90CRYPT_USE_HOTPLUG
static int z90crypt_major = Z90CRYPT_MAJOR;
#endif
static int domain = DOMAIN_INDEX;
static struct z90crypt z90crypt;
static int quiesce_z90crypt;
......@@ -444,14 +414,12 @@ static struct file_operations z90crypt_fops = {
.release = z90crypt_release
};
#ifndef Z90CRYPT_USE_HOTPLUG
static struct miscdevice z90crypt_misc_device = {
.minor = Z90CRYPT_MINOR,
.name = DEV_NAME,
.fops = &z90crypt_fops,
.devfs_name = DEV_NAME
};
#endif
/**
* Documentation values.
......@@ -603,7 +571,6 @@ z90crypt_init_module(void)
return -EINVAL;
}
#ifndef Z90CRYPT_USE_HOTPLUG
/* Register as misc device with given minor (or get a dynamic one). */
result = misc_register(&z90crypt_misc_device);
if (result < 0) {
......@@ -611,18 +578,6 @@ z90crypt_init_module(void)
z90crypt_misc_device.minor, result);
return result;
}
#else
/* Register the major (or get a dynamic one). */
result = register_chrdev(z90crypt_major, REG_NAME, &z90crypt_fops);
if (result < 0) {
PRINTKW("register_chrdev (major %d) failed with %d.\n",
z90crypt_major, result);
return result;
}
if (z90crypt_major == 0)
z90crypt_major = result;
#endif
PDEBUG("Registered " DEV_NAME " with result %d\n", result);
......@@ -645,11 +600,6 @@ z90crypt_init_module(void)
} else
PRINTK("No devices at startup\n");
#ifdef Z90CRYPT_USE_HOTPLUG
/* generate hotplug event for device node generation */
z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_ADD);
#endif
/* Initialize globals. */
spin_lock_init(&queuespinlock);
......@@ -701,17 +651,10 @@ z90crypt_init_module(void)
return 0; // success
init_module_cleanup:
#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
#else
if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
PRINTK("unregister_chrdev failed with %d.\n", nresult);
else
PDEBUG("unregister_chrdev successful.\n");
#endif
return result; // failure
}
......@@ -728,19 +671,10 @@ z90crypt_cleanup_module(void)
remove_proc_entry("driver/z90crypt", 0);
#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
#else
z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_REMOVE);
if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
PRINTK("unregister_chrdev failed with %d.\n", nresult);
else
PDEBUG("unregister_chrdev successful.\n");
#endif
/* Remove the tasks */
tasklet_kill(&reader_tasklet);
......@@ -748,6 +682,9 @@ z90crypt_cleanup_module(void)
del_timer(&config_timer);
del_timer(&cleanup_timer);
if (z90_device_work)
destroy_workqueue(z90_device_work);
destroy_z90crypt();
PRINTKN("Unloaded.\n");
......@@ -766,8 +703,6 @@ z90crypt_cleanup_module(void)
* z90crypt_status_write
* disable_card
* enable_card
* scan_char
* scan_string
*
* Helper functions:
* z90crypt_rsa
......@@ -1057,9 +992,10 @@ remove_device(struct device *device_p)
* The MCL must be applied and the newer bitlengths enabled for these to work.
*
* Card Type Old limit New limit
* PCICA ??-2048 same (the lower limit is less than 128 bit...)
* PCICC 512-1024 512-2048
* PCIXCC_MCL2 512-2048 no change (applying this MCL == card is MCL3+)
* PCIXCC_MCL3 512-2048 128-2048
* PCIXCC_MCL2 512-2048 ----- (applying any GA LIC will make an MCL3 card)
* PCIXCC_MCL3 ----- 128-2048
* CEX2C 512-2048 128-2048
*
* ext_bitlens (extended bitlengths) is a global, since you should not apply an
......@@ -1104,7 +1040,7 @@ select_device_type(int *dev_type_p, int bytelength)
if (PCICA_avail || PCIXCC_MCL3_avail || CEX2C_avail) {
/**
* bitlength is a factor, PCICA is the most capable, even with
* the new MCL.
* the new MCL for PCIXCC.
*/
if ((bytelength < PCIXCC_MIN_MOD_SIZE) ||
(!ext_bitlens && (bytelength < OLD_PCIXCC_MIN_MOD_SIZE))) {
......@@ -2144,73 +2080,15 @@ enable_card(int card_index)
z90crypt.hdware_info->type_mask[devp->dev_type].user_disabled_count--;
}
static inline int
scan_char(unsigned char *bf, unsigned int len,
unsigned int *offs, unsigned int *p_eof, unsigned char c)
{
unsigned int i, found;
found = 0;
for (i = 0; i < len; i++) {
if (bf[i] == c) {
found = 1;
break;
}
if (bf[i] == '\0') {
*p_eof = 1;
break;
}
if (bf[i] == '\n') {
break;
}
}
*offs = i+1;
return found;
}
static inline int
scan_string(unsigned char *bf, unsigned int len,
unsigned int *offs, unsigned int *p_eof, unsigned char *s)
{
unsigned int temp_len, temp_offs, found, eof;
temp_len = temp_offs = found = eof = 0;
while (!eof && !found) {
found = scan_char(bf+temp_len, len-temp_len,
&temp_offs, &eof, *s);
temp_len += temp_offs;
if (eof) {
found = 0;
break;
}
if (found) {
if (len >= temp_offs+strlen(s)) {
found = !strncmp(bf+temp_len-1, s, strlen(s));
if (found) {
*offs = temp_len+strlen(s)-1;
break;
}
} else {
found = 0;
*p_eof = 1;
break;
}
}
}
return found;
}
static int
z90crypt_status_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
int i, j, len, offs, found, eof;
unsigned char *lbuf;
int j, eol;
unsigned char *lbuf, *ptr;
unsigned int local_count;
#define LBUFSIZE 600
#define LBUFSIZE 1200
lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
if (!lbuf) {
PRINTK("kmalloc failed!\n");
......@@ -2227,49 +2105,46 @@ z90crypt_status_write(struct file *file, const char __user *buffer,
return -EFAULT;
}
lbuf[local_count-1] = '\0';
lbuf[local_count] = '\0';
len = 0;
eof = 0;
found = 0;
while (!eof) {
found = scan_string(lbuf+len, local_count-len, &offs, &eof,
"Online devices");
len += offs;
if (found == 1)
break;
ptr = strstr(lbuf, "Online devices");
if (ptr == 0) {
PRINTK("Unable to parse data (missing \"Online devices\")\n");
kfree(lbuf);
return count;
}
if (eof) {
ptr = strstr(ptr, "\n");
if (ptr == 0) {
PRINTK("Unable to parse data (missing newline after \"Online devices\")\n");
kfree(lbuf);
return count;
}
ptr++;
if (found)
found = scan_char(lbuf+len, local_count-len, &offs, &eof, '\n');
if (!found || eof) {
if (strstr(ptr, "Waiting work element counts") == NULL) {
PRINTK("Unable to parse data (missing \"Waiting work element counts\")\n");
kfree(lbuf);
return count;
}
len += offs;
j = 0;
for (i = 0; i < 80; i++) {
switch (*(lbuf+len+i)) {
eol = 0;
while ((j < 64) && (*ptr != '\0')) {
switch (*ptr) {
case '\t':
case ' ':
break;
case '\n':
default:
eof = 1;
eol = 1;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '0': // no device
case '1': // PCICA
case '2': // PCICC
case '3': // PCIXCC_MCL2
case '4': // PCIXCC_MCL3
case '5': // CEX2C
j++;
break;
case 'd':
......@@ -2283,8 +2158,9 @@ z90crypt_status_write(struct file *file, const char __user *buffer,
j++;
break;
}
if (eof)
if (eol)
break;
ptr++;
}
kfree(lbuf);
......@@ -3479,45 +3355,5 @@ probe_PCIXCC_type(struct device *devPtr)
return rv;
}
#ifdef Z90CRYPT_USE_HOTPLUG
static void
z90crypt_hotplug_event(int dev_major, int dev_minor, int action)
{
#ifdef CONFIG_HOTPLUG
char *argv[3];
char *envp[6];
char major[20];
char minor[20];
sprintf(major, "MAJOR=%d", dev_major);
sprintf(minor, "MINOR=%d", dev_minor);
argv[0] = hotplug_path;
argv[1] = "z90crypt";
argv[2] = 0;
envp[0] = "HOME=/";
envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
switch (action) {
case Z90CRYPT_HOTPLUG_ADD:
envp[2] = "ACTION=add";
break;
case Z90CRYPT_HOTPLUG_REMOVE:
envp[2] = "ACTION=remove";
break;
default:
BUG();
break;
}
envp[3] = major;
envp[4] = minor;
envp[5] = 0;
call_usermodehelper(argv[0], argv, envp, 0);
#endif
}
#endif
module_init(z90crypt_init_module);
module_exit(z90crypt_cleanup_module);
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