chiark / gitweb /
dasd_id: add s390 disk-label prober
authorHannes Reinecke <hare@suse.de>
Wed, 13 Jul 2005 09:35:51 +0000 (11:35 +0200)
committerKay Sievers <kay.sievers@suse.de>
Wed, 13 Jul 2005 09:35:51 +0000 (11:35 +0200)
Signed-off-by: Hannes Reinecke <hare@suse.de>
extras/dasd_id/Makefile [new file with mode: 0644]
extras/dasd_id/dasd_id.c [new file with mode: 0644]
test/simple-build-check.sh

diff --git a/extras/dasd_id/Makefile b/extras/dasd_id/Makefile
new file mode 100644 (file)
index 0000000..33bb696
--- /dev/null
@@ -0,0 +1,52 @@
+# Makefile for dasd_id
+#
+# Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+#
+# 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.
+#
+
+PROG = dasd_id
+
+all:   $(PROG)
+
+prefix =
+exec_prefix =  ${prefix}
+etcdir =       ${prefix}/etc
+sbindir =      ${exec_prefix}/sbin
+usrbindir =    ${exec_prefix}/usr/bin
+usrsbindir =   ${exec_prefix}/usr/sbin
+mandir =       ${prefix}/usr/share/man
+devddir =      ${etcdir}/dev.d/default
+configdir =    ${etcdir}/udev/
+initdir =      ${etcdir}/init.d/
+srcdir = .
+
+INSTALL = /usr/bin/install -c
+INSTALL_PROGRAM = ${INSTALL}
+INSTALL_DATA  = ${INSTALL} -m 644
+INSTALL_SCRIPT = ${INSTALL_PROGRAM}
+
+CFLAGS+=-D_FILE_OFFSET_BITS=64
+
+OBJS = dasd_id.o ../../udev.a
+
+$(OBJS): $(HEADERS)
+
+.c.o:
+       $(QUIET) $(CC) $(CFLAGS) -c -o $@ $<
+
+$(PROG): $(OBJS) $(HEADERS)
+       $(QUIET) $(LD) $(LDFLAGS) -o $(PROG) $(OBJS) $(LIB_OBJS)
+
+clean:
+       rm -f $(PROG) $(OBJS)
+
+spotless: clean
+
+install: all
+       $(INSTALL_PROGRAM) $(PROG) $(DESTDIR)$(sbindir)/$(PROG)
+
+uninstall:
+       - rm $(DESTDIR)$(sbindir)/$(PROG)
diff --git a/extras/dasd_id/dasd_id.c b/extras/dasd_id/dasd_id.c
new file mode 100644 (file)
index 0000000..5c2143f
--- /dev/null
@@ -0,0 +1,273 @@
+/*
+ * 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.
+ * 
+ *     This program is distributed in the hope that it will be useful, but
+ *     WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *     General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License along
+ *     with this program; if not, write to the Free Software Foundation, Inc.,
+ *     675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#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 <asm/types.h>
+
+#include "../../logging.h"
+#include "../../udev_utils.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, 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;
+       __u8 *data;
+       __u8 *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);
+       } else
+               printf("%s\n", serial);
+
+       close(fd);
+exit:
+       logging_close();
+       return rc;
+}
+
index c5b429d..7e9a940 100755 (executable)
@@ -6,6 +6,7 @@ EXTRAS="\
        extras/ata_id \
        extras/volume_id \
        extras/usb_id \
+       extras/dasd_id \
        extras/run_directory"
 
 [ -z "$KERNEL_DIR" ] && KERNEL_DIR=/lib/modules/`uname -r`/build