+++ /dev/null
-/*
- * dasdlabel - read label from s390 block device
- *
- * Copyright (C) 2004 Arnd Bergmann <arnd@arndb.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation version 2 of the License.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-
-#include "../../udev.h"
-
-#ifdef USE_LOG
-void log_message(int priority, const char *format, ...)
-{
- va_list args;
- static int udev_log = -1;
-
- if (udev_log == -1) {
- const char *value;
-
- value = getenv("UDEV_LOG");
- if (value)
- udev_log = log_priority(value);
- else
- udev_log = LOG_ERR;
- }
-
- if (priority > udev_log)
- return;
-
- va_start(args, format);
- vsyslog(priority, format, args);
- va_end(args);
-}
-#endif
-
-/*
- * Only compile this on S/390. Doesn't make any sense
- * for other architectures.
- */
-
-static unsigned char EBCtoASC[256] =
-{
-/* 0x00 NUL SOH STX ETX *SEL HT *RNL DEL */
- 0x00, 0x01, 0x02, 0x03, 0x07, 0x09, 0x07, 0x7F,
-/* 0x08 -GE -SPS -RPT VT FF CR SO SI */
- 0x07, 0x07, 0x07, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
-/* 0x10 DLE DC1 DC2 DC3 -RES -NL BS -POC
- -ENP ->LF */
- 0x10, 0x11, 0x12, 0x13, 0x07, 0x0A, 0x08, 0x07,
-/* 0x18 CAN EM -UBS -CU1 -IFS -IGS -IRS -ITB
- -IUS */
- 0x18, 0x19, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
-/* 0x20 -DS -SOS FS -WUS -BYP LF ETB ESC
- -INP */
- 0x07, 0x07, 0x1C, 0x07, 0x07, 0x0A, 0x17, 0x1B,
-/* 0x28 -SA -SFE -SM -CSP -MFA ENQ ACK BEL
- -SW */
- 0x07, 0x07, 0x07, 0x07, 0x07, 0x05, 0x06, 0x07,
-/* 0x30 ---- ---- SYN -IR -PP -TRN -NBS EOT */
- 0x07, 0x07, 0x16, 0x07, 0x07, 0x07, 0x07, 0x04,
-/* 0x38 -SBS -IT -RFF -CU3 DC4 NAK ---- SUB */
- 0x07, 0x07, 0x07, 0x07, 0x14, 0x15, 0x07, 0x1A,
-/* 0x40 SP RSP ä ---- */
- 0x20, 0xFF, 0x83, 0x84, 0x85, 0xA0, 0x07, 0x86,
-/* 0x48 . < ( + | */
- 0x87, 0xA4, 0x9B, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
-/* 0x50 & ---- */
- 0x26, 0x82, 0x88, 0x89, 0x8A, 0xA1, 0x8C, 0x07,
-/* 0x58 ß ! $ * ) ; */
- 0x8D, 0xE1, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAA,
-/* 0x60 - / ---- Ä ---- ---- ---- */
- 0x2D, 0x2F, 0x07, 0x8E, 0x07, 0x07, 0x07, 0x8F,
-/* 0x68 ---- , % _ > ? */
- 0x80, 0xA5, 0x07, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
-/* 0x70 --- ---- ---- ---- ---- ---- ---- */
- 0x07, 0x90, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
-/* 0x78 * ` : # @ ' = " */
- 0x70, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
-/* 0x80 * a b c d e f g */
- 0x07, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
-/* 0x88 h i ---- ---- ---- */
- 0x68, 0x69, 0xAE, 0xAF, 0x07, 0x07, 0x07, 0xF1,
-/* 0x90 ° j k l m n o p */
- 0xF8, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
-/* 0x98 q r ---- ---- */
- 0x71, 0x72, 0xA6, 0xA7, 0x91, 0x07, 0x92, 0x07,
-/* 0xA0 ~ s t u v w x */
- 0xE6, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
-/* 0xA8 y z ---- ---- ---- ---- */
- 0x79, 0x7A, 0xAD, 0xAB, 0x07, 0x07, 0x07, 0x07,
-/* 0xB0 ^ ---- § ---- */
- 0x5E, 0x9C, 0x9D, 0xFA, 0x07, 0x07, 0x07, 0xAC,
-/* 0xB8 ---- [ ] ---- ---- ---- ---- */
- 0xAB, 0x07, 0x5B, 0x5D, 0x07, 0x07, 0x07, 0x07,
-/* 0xC0 { A B C D E F G */
- 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
-/* 0xC8 H I ---- ö ---- */
- 0x48, 0x49, 0x07, 0x93, 0x94, 0x95, 0xA2, 0x07,
-/* 0xD0 } J K L M N O P */
- 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
-/* 0xD8 Q R ---- ü */
- 0x51, 0x52, 0x07, 0x96, 0x81, 0x97, 0xA3, 0x98,
-/* 0xE0 \ S T U V W X */
- 0x5C, 0xF6, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
-/* 0xE8 Y Z ---- Ö ---- ---- ---- */
- 0x59, 0x5A, 0xFD, 0x07, 0x99, 0x07, 0x07, 0x07,
-/* 0xF0 0 1 2 3 4 5 6 7 */
- 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
-/* 0xF8 8 9 ---- ---- Ü ---- ---- ---- */
- 0x38, 0x39, 0x07, 0x07, 0x9A, 0x07, 0x07, 0x07
-};
-
-static void vtoc_ebcdic_dec (const unsigned char *source, unsigned char *target, int l)
-{
- int i;
-
- for (i = 0; i < l; i++)
- target[i]=(char)EBCtoASC[(unsigned char)(source[i])];
-}
-
-/*
- * struct dasd_information_t
- * represents any data about the data, which is visible to userspace
- */
-typedef struct dasd_information_t {
- unsigned int devno; /* S/390 devno */
- unsigned int real_devno; /* for aliases */
- unsigned int schid; /* S/390 subchannel identifier */
- unsigned int cu_type : 16; /* from SenseID */
- unsigned int cu_model : 8; /* from SenseID */
- unsigned int dev_type : 16; /* from SenseID */
- unsigned int dev_model : 8; /* from SenseID */
- unsigned int open_count;
- unsigned int req_queue_len;
- unsigned int chanq_len; /* length of chanq */
- char type[4]; /* from discipline.name, 'none' for unknown */
- unsigned int status; /* current device level */
- unsigned int label_block; /* where to find the VOLSER */
- unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
- unsigned int characteristics_size;
- unsigned int confdata_size;
- char characteristics[64]; /* from read_device_characteristics */
- char configuration_data[256]; /* from read_configuration_data */
-} dasd_information_t;
-
-#define DASD_IOCTL_LETTER 'D'
-#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
-#define BLKSSZGET _IO(0x12,104)
-
-unsigned char serial[8];
-
-static int dasd_id(int fd)
-{
- int blocksize;
- dasd_information_t info;
- unsigned char *data;
- unsigned char *label_raw;
-
- if (ioctl(fd, BIODASDINFO, &info) != 0) {
- dbg("not a dasd");
- return -1;
- }
-
- if (ioctl(fd, BLKSSZGET, &blocksize) != 0) {
- err("failed to get blocksize");
- return -1;
- }
-
- if (lseek(fd,info.label_block * blocksize, SEEK_SET) == -1) {
- err("seek failed on dasd");
- return -1;
- }
-
- data = malloc(blocksize);
- if (data == NULL)
- return -1;
-
- if (read(fd, data, blocksize) == -1) {
- err("read disklabel failed");
- free(data);
- return -1;
- }
-
- if ((!info.FBA_layout) && (!strcmp(info.type, "ECKD")))
- label_raw = &data[8];
- else
- label_raw = &data[4];
- serial[6] = '\0';
-
- vtoc_ebcdic_dec(label_raw, serial, 6);
- free(data);
-
- return 0;
- }
-
-int main(int argc, char *argv[])
-{
- const char *node = NULL;
- int i;
- int export = 0;
- int fd;
- int rc = 0;
-
- logging_init("dasd_id");
-
- for (i = 1; i < argc; i++) {
- char *arg = argv[i];
-
- if (strcmp(arg, "--export") == 0) {
- export = 1;
- } else
- node = arg;
- }
- if (!node) {
- err("no node specified");
- rc = 1;
- goto exit;
- }
-
- fd = open(node, O_RDONLY);
- if (fd < 0) {
- err("unable to open '%s'", node);
- rc = 1;
- goto exit;
- }
-
- if (dasd_id(fd) < 0) {
- err("dasd_id failed: %s", strerror(errno));
- rc = 1;
- }
-
- if (export) {
- printf("ID_TYPE=disk\n");
- printf("ID_SERIAL=%s\n",serial);
- printf("ID_BUS=ccw\n");
- } else
- printf("%s\n", serial);
-
- close(fd);
-exit:
- logging_close();
- return rc;
-}
-
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