patch-2.4.8 linux/arch/s390/tools/silo/silo.c

• Lines: 587
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.7/linux/arch/s390/tools/silo/silo.c
• Orig date: Wed Apr 11 19:02:27 2001

diff -u --recursive --new-file v2.4.7/linux/arch/s390/tools/silo/silo.c linux/arch/s390/tools/silo/silo.c
@@ -1,586 +0,0 @@
-/*
- *  arch/s390/boot/silo.c
- *
- *  S390 version
- *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *
- *    Report bugs to: <linux390@de.ibm.com>
- *
- *    Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *               Fritz Elfert <felfert@to.com> contributed support for
- *                	/etc/silo.conf based on Intel's lilo
- *    Changes  :
- *               01/15/01 Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *                 adapted to deal with devices and bootsects of various sizes
- */
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <limits.h>
-#include <dirent.h>
-#include <linux/fs.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <asm/ioctl.h>
-
-#include "cfg.h"
-
-CONFIG cf_options[] = {
-  { cft_strg, "append",		NULL,		NULL,NULL },
-  { cft_strg, "image",		NULL,		NULL,NULL },
-  { cft_strg, "ipldevice",	NULL,		NULL,NULL },
-  { cft_strg, "bootsect",	NULL,		NULL,NULL },
-  { cft_strg, "map",		NULL,		NULL,NULL },
-  { cft_strg, "parmfile",	NULL,		NULL,NULL },
-  { cft_strg, "ramdisk",	NULL,		NULL,NULL },
-  { cft_strg, "root",		NULL,		NULL,NULL },
-  { cft_flag, "readonly",	NULL,		NULL,NULL },
-  { cft_strg, "verbose",	NULL,		NULL,NULL },
-  { cft_strg, "testlevel",	NULL,		NULL,NULL },
-  { cft_end,  NULL,		NULL,		NULL,NULL }
-};
-  
-/* from dasd.h */
-#define DASD_PARTN_BITS 2
-#define BIODASDRWTB _IOWR('D',0,int)
-/* end */
-
-#define SILO_CFG "/etc/silo.conf"
-#define SILO_IMAGE "./image"
-#define SILO_BOOTMAP "./boot.map"
-#define SILO_PARMFILE "./parmfile"
-#define SILO_BOOTSECT "/boot/ipleckd.boot"
-
-#define PRINT_LEVEL(x,y...) if ( silo_options.verbosity >= x ) printf(y)
-#define ERROR_LEVEL(x,y...) if ( silo_options.verbosity >= x ) fprintf(stderr,y)
-#define TOGGLE(x) ((x)=((x)?(0):(1)))
-#define GETARG(x) {int len=strlen(optarg);x=malloc(len);strncpy(x,optarg,len);PRINT_LEVEL(1,"%s set to %s\n",#x,optarg);}
-
-#define ITRY(x) if ( (x) == -1 ) { ERROR_LEVEL(0,"%s (line:%d) '%s' returned %d='%s'\n", __FILE__,__LINE__,#x,errno,strerror(errno)); usage(); exit(1); }
-#define NTRY(x) if ( (x) == 0 ) { ERROR_LEVEL(0,"%s (line:%d) '%s' returned %d='%s'\n", __FILE__,__LINE__,#x,errno,strerror(errno)); usage(); exit(1); }
-
-#define MAX_CLUSTERS 256
-#define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
-
-#define SILO_VERSION "1.1"
-
-struct silo_options
-  {
-    short int verbosity;
-    short int testlevel;
-    char *image;
-    char *ipldevice;
-    char *parmfile;
-    char *ramdisk;
-    char *bootsect;
-    char *conffile;
-    char *bootmap;
-  }
-silo_options =
-{
-  1,				/* verbosity */
-  2,				/* testlevel */
-    SILO_IMAGE,			/* image */
-    NULL,			/* ipldevice */
-    SILO_PARMFILE,		/* parmfile */
-    NULL,			/* initrd */
-    SILO_BOOTSECT,		/* bootsector */
-    SILO_CFG,                   /* silo.conf file */
-    SILO_BOOTMAP,               /* boot.map */
-};
-
-struct blockdesc
-  {
-    unsigned long off;
-    unsigned short ct;
-    unsigned long addr;
-  };
-
-struct blocklist
-  {
-    struct blockdesc blk[MAX_CLUSTERS];
-    unsigned short ix;
-  };
-
-void
-usage (void)
-{
-  printf ("Usage:\n");
-  printf ("silo -d ipldevice [additional options]\n");
-  printf ("-d /dev/node : set ipldevice to /dev/node\n");
-  printf ("-f image : set image to image\n");
-  printf ("-F conffile : specify configuration file (/etc/silo.conf)\n");
-  printf ("-p parmfile : set parameter file to parmfile\n");
-  printf ("-b bootsect : set bootsector to bootsect\n");
-  printf ("Additional options\n");
-  printf ("-B bootmap:\n");
-  printf ("-v: increase verbosity level\n");
-  printf ("-v#: set verbosity level to #\n");
-  printf ("-t: decrease testing level\n");
-  printf ("-h: print this message\n");
-  printf ("-?: print this message\n");
-  printf ("-V: print version\n");
-}
-
-int
-read_cfg(struct silo_options *o)
-{
-	char *tmp;
-	if (access(o->conffile, R_OK) && (errno == ENOENT))
-		return 0;
-	/* If errno != ENOENT, let cfg_open report an error */
-	cfg_open(o->conffile);
-	cfg_parse(cf_options);
-	tmp = cfg_get_strg(cf_options, "ipldevice");
-	if ( ! o->ipldevice  && tmp ) 
-		o->ipldevice = tmp;
-	tmp = cfg_get_strg(cf_options, "image");
-	if ( ! strncmp(o-> image,SILO_IMAGE,strlen(SILO_IMAGE)) && tmp ) 
-		o->image = tmp;
-	tmp = cfg_get_strg(cf_options, "parmfile");
-	if ( !strncmp(o->parmfile,SILO_PARMFILE,strlen(SILO_PARMFILE)) && tmp) 
-		o->parmfile = tmp;
-	if ( ! o -> ramdisk ) 
-		o->ramdisk = cfg_get_strg(cf_options, "ramdisk");
-	tmp = cfg_get_strg(cf_options, "bootsect");
-	if ( !strncmp(o -> bootsect,SILO_BOOTSECT,strlen(SILO_BOOTSECT))&&tmp)
-		o->bootsect = tmp;
-	tmp = cfg_get_strg(cf_options, "map") ;
-	if ( !strncmp(o -> bootmap,SILO_BOOTMAP,strlen(SILO_BOOTMAP)) && tmp) 
-		o->bootmap = tmp; 
-	tmp = cfg_get_strg(cf_options, "verbose");
-	if ( tmp ) {
-		unsigned short v;
-		sscanf (tmp, "%hu", &v);
-		o->verbosity = v;
-	}
-	tmp = cfg_get_strg(cf_options, "testlevel");
-	if ( tmp ) {
-		unsigned short t;
-		sscanf (tmp, "%hu", &t);
-		o->testlevel += t;
-	}
-	return 1;
-}
-
-char *
-gen_tmpparm( char *pfile )
-{
-	char *append = cfg_get_strg(cf_options, "append");
-	char *root = cfg_get_strg(cf_options, "root");
-	int ro = cfg_get_flag(cf_options, "readonly");
-	FILE *f,*of;
-	char *fn;
-	char c;
-	char *tmpdir=NULL,*save=NULL;
-
-	if (!append && !root && !ro)
-		return pfile;
-	of = fopen(pfile, "r");
-	if ( of ) {
-		NTRY( fn = tempnam(NULL,"parm."));
-	} else {
-		fn = pfile;
-	}
-	NTRY( f = fopen(fn, "a+"));
-	if ( of ) {
-		while ( ! feof (of) ) {
-		  c=fgetc(of);
-	  	fputc(c,f);
-		}
-	}
-	if (root)
-		fprintf(f, " root=%s", root);
-	if (ro)
-		fprintf(f, " ro");
-	if (append)
-		fprintf(f, " %s", append);
-	fprintf(f, "\n");
-	fclose(f);
-	fclose(of);
-	printf ("tempfile is %s\n",fn);
-	return strdup(fn);
-}
-
-int
-parse_options (struct silo_options *o, int argc, char *argv[])
-{
-  int rc = 0;
-  int oc;
-
-  while ((oc = getopt (argc, argv, "Vf:F:d:p:r:b:B:h?v::t::")) != -1)
-    {
-      switch (oc)
-	{
-	case 'V':
-	  printf("silo version: %s\n",SILO_VERSION);
-	  exit(0);
-	case 'v':
-	  {
-	    unsigned short v;
-	    if (optarg && sscanf (optarg, "%hu", &v))
-	      o->verbosity = v;
-	    else
-	      o->verbosity++;
-	    PRINT_LEVEL (1, "Verbosity value is now %hu\n", o->verbosity);
-	    break;
-	  }
-	case 't':
-	  {
-	    unsigned short t;
-	    if (optarg && sscanf (optarg, "%hu", &t))
-	      o->testlevel -= t;
-	    else
-	      o->testlevel--;
-            PRINT_LEVEL (1, "Testonly flag is now %d\n", o->testlevel);
-	    break;
-	  }
-	case 'h':
-	case '?':
-	  usage ();
-	  exit(0);
-	case 'd':
-	  GETARG (o->ipldevice);
-	  break;
-	case 'f':
-	  GETARG (o->image);
-	  break;
-        case 'F':                         
- 	   GETARG (o->conffile);              
- 	   break;                          
-	case 'p':
-	  GETARG (o->parmfile);
-	  break;
-	case 'r':
-	  GETARG (o->ramdisk);
-	  break;
-	case 'b':
-	  GETARG (o->bootsect);
-	  break;
-	case 'B':
-	  GETARG (o->bootmap);
-	default:
-	  rc = EINVAL;
-	  break;
-	}
-    }
-  read_cfg(o);
-  return rc;
-}
-
-int
-verify_device (char *name)
-{
-  int rc = 0;
-  struct stat dst;
-  struct stat st;
-  ITRY (stat (name, &dst));
-  if (S_ISBLK (dst.st_mode))
-    {
-      if (!(MINOR (dst.st_rdev) & PARTN_MASK))
-	{
-	  rc = dst.st_rdev;
-	}
-      else
-	/* invalid MINOR & PARTN_MASK */
-	{
-	  ERROR_LEVEL (1, "Cannot boot from partition %d %d %d",
-		       (int) PARTN_MASK, (int) MINOR (dst.st_rdev), (int) (PARTN_MASK & MINOR (dst.st_rdev)));
-	  rc = -1;
-	  errno = EINVAL;
-	}
-    }
-  else
-    /* error S_ISBLK */
-    {
-      ERROR_LEVEL (1, "%s is no block device\n", name);
-      rc = -1;
-      errno = EINVAL;
-    }
-  return rc;
-}
-
-int
-verify_file (char *name, int dev)
-{
-  int rc = 0;
-  struct stat dst;
-  struct stat st;
-  int bs = 1024;
-  int l;
-
-  ITRY(stat ( name, &dst ));
-  if (S_ISREG (dst.st_mode))
-    {
-      if ((unsigned) MAJOR (dev) == (unsigned) MAJOR (dst.st_dev) && (unsigned) MINOR (dev) == (unsigned) (MINOR (dst.st_dev) & ~PARTN_MASK))
-	{
-	  /* whatever to do if all is ok... */
-	}
-      else
-	/* devicenumber doesn't match */
-	{
-	  ERROR_LEVEL (1, "%s is not on device (%d/%d) but on (%d/%d)\n", name, (unsigned) MAJOR (dev), (unsigned) MINOR (dev), (unsigned) MAJOR (dst.st_dev), (unsigned) (MINOR (dst.st_dev) & ~PARTN_MASK));
-	  rc = -1;
-	  errno = EINVAL;
-	}
-    }
-  else
-    /* error S_ISREG */
-    {
-      ERROR_LEVEL (1, "%s is neither regular file nor linkto one\n", name);
-      rc = -1;
-      errno = EINVAL;
-    }
-  return rc;
-}
-
-int
-verify_options (struct silo_options *o)
-{
-  int rc = 0;
-  int dev = 0;
-  int crc = 0;
-  if (!o->ipldevice || !o->image || !o->bootsect)
-    {
-     if (!o->ipldevice)
-       fprintf(stderr,"ipldevice\n");
-     if (!o->image)
-       fprintf(stderr,"image\n");
-     if (!o->bootsect)
-       fprintf(stderr,"bootsect\n");
-
-      usage ();
-      exit (1);
-    }
-  PRINT_LEVEL (1, "Testlevel is set to %d\n",o->testlevel);
-
-  PRINT_LEVEL (1, "IPL device is: '%s'", o->ipldevice);
-  ITRY (dev = verify_device (o->ipldevice));
-  PRINT_LEVEL (2, "...ok...(%d/%d)", (unsigned short) MAJOR (dev), (unsigned short) MINOR (dev));
-  PRINT_LEVEL (1, "\n");
-
-  PRINT_LEVEL (0, "bootsector is: '%s'", o->bootsect);
-  ITRY (verify_file (o->bootsect, dev));
-  PRINT_LEVEL (1, "...ok...");
-  PRINT_LEVEL (0, "\n");
-
-  if ( o -> testlevel > 0  && 
-       ! strncmp( o->bootmap, SILO_BOOTMAP,strlen(SILO_BOOTMAP) )) {
-     NTRY( o -> bootmap = tempnam(NULL,"boot."));
-  }
-  PRINT_LEVEL (0, "bootmap is set to: '%s'", o->bootmap);
-  if ( access ( o->bootmap, O_RDWR ) == -1 ) {
-    if ( errno == ENOENT ) {
-      ITRY (creat ( o-> bootmap, O_RDWR ));
-    } else {
-      PRINT_LEVEL(1,"Cannot access bootmap file '%s': %s\n",o->bootmap,
-		  strerror(errno));
-    }
-  }
-  ITRY (verify_file (o->bootmap, dev));
-  PRINT_LEVEL (1, "...ok...");
-  PRINT_LEVEL (0, "\n");
-
-  PRINT_LEVEL (0, "Kernel image is: '%s'", o->image);
-  ITRY (verify_file (o->image, dev));
-  PRINT_LEVEL (1, "...ok...");
-  PRINT_LEVEL (0, "\n");
-
-  PRINT_LEVEL (0, "original parameterfile is: '%s'", o->parmfile);
-  ITRY (verify_file (o->parmfile, dev));
-  PRINT_LEVEL (1, "...ok...");
-  o->parmfile = gen_tmpparm(o->parmfile);
-  PRINT_LEVEL (0, "final parameterfile is: '%s'", o->parmfile);
-  ITRY (verify_file (o->parmfile, dev));
-  PRINT_LEVEL (1, "...ok...");
-  PRINT_LEVEL (0, "\n");
-
-  if (o->ramdisk)
-    {
-      PRINT_LEVEL (0, "initialramdisk is: '%s'", o->ramdisk);
-      ITRY (verify_file (o->ramdisk, dev));
-      PRINT_LEVEL (1, "...ok...");
-      PRINT_LEVEL (0, "\n");
-    }
-
-  return crc;
-}
-
-
-int
-add_file_to_blocklist (char *name, struct blocklist *lst, long addr)
-{
-  int fd;
-  int devfd;
-  struct stat fst;
-  int i;
-  int blk;
-  int bs;
-  int blocks;
-
-  int rc = 0;
-
-  ITRY (fd = open (name, O_RDONLY));
-  ITRY (fstat (fd, &fst));
-  ITRY (mknod ("/tmp/silodev", S_IFBLK | S_IRUSR | S_IWUSR, fst.st_dev));
-  ITRY (devfd = open ("/tmp/silodev", O_RDONLY));
-  ITRY (ioctl (fd, FIGETBSZ, &bs));
-  blocks = (fst.st_size + bs - 1) / bs;
-  for (i = 0; i < blocks; i++)
-    {
-      blk = i;
-      ITRY (ioctl (fd, FIBMAP, &blk));
-      if (blk)
-	{
-	  int oldblk = blk;
-	  ITRY (ioctl (devfd, BIODASDRWTB, &blk));
-	  if (blk <= 0)
-	    {
-	      ERROR_LEVEL (0, "BIODASDRWTB on blk %d returned %d\n", oldblk, blk);
-	      break;
-	    }
-	}
-      else
-	{
-	  PRINT_LEVEL (1, "Filled hole on blk %d\n", i);
-	}
-      if (lst->ix == 0 || i == 0  || 
-	  lst->blk[lst->ix - 1].ct >= 128 ||
-	  (lst->blk[lst->ix - 1].off + lst->blk[lst->ix - 1].ct != blk &&
-	   !(lst->blk[lst->ix - 1].off == 0 && blk == 0)))
-	{
-	  if (lst->ix >= MAX_CLUSTERS)
-	    {
-	      rc = 1;
-	      errno = ENOMEM;
-	      break;
-	    }
-	  lst->blk[lst->ix].off = blk;
-	  lst->blk[lst->ix].ct = 1;
-	  lst->blk[lst->ix].addr = addr + i * bs;
-	  lst->ix++;
-	}
-      else
-	{
-	  lst->blk[lst->ix - 1].ct++;
-	}
-    }
-  ITRY(unlink("/tmp/silodev"));
-  return rc;
-}
-
-int
-write_bootsect (struct silo_options *o, struct blocklist *blklst)
-{
-  int i;
-  int s_fd, d_fd, b_fd, bd_fd;
-  struct stat s_st, d_st, b_st;
-  int rc=0;
-  int bs, boots;
-  char *tmpdev;
-  char buffer[4096]={0,};
-  int blocksize, sectsize;
-  ITRY (d_fd = open (o->ipldevice, O_RDWR | O_SYNC));
-  ITRY (fstat (d_fd, &d_st));
-  ITRY (s_fd = open (o->bootmap, O_RDWR | O_TRUNC | O_CREAT | O_SYNC));
-  ITRY (verify_file (o->bootsect, d_st.st_rdev));
-  for (i = 0; i < blklst->ix; i++)
-    {
-      int offset = blklst->blk[i].off;
-      int addrct = blklst->blk[i].addr | (blklst->blk[i].ct & 0xff);
-      PRINT_LEVEL (1, "ix %i: offset: %06x count: %02x address: 0x%08x\n", i, offset, blklst->blk[i].ct & 0xff, blklst->blk[i].addr);
-	if ( o->testlevel <= 1 ) {
-	      NTRY (write (s_fd, &offset, sizeof (int)));
-	      NTRY (write (s_fd, &addrct, sizeof (int)));
-	}
-    }
-  ITRY (ioctl (s_fd,FIGETBSZ, &bs));
-  ITRY (stat (o->bootmap, &s_st));
-  if (s_st.st_size > bs )
-    {
-      ERROR_LEVEL (0,"%s is larger than one block\n", o->bootmap);
-      rc = -1;
-      errno = EINVAL;
-    }
-  boots=0;
-  NTRY ( tmpdev = tmpnam(NULL) );
-  ITRY (mknod (tmpdev, S_IFBLK | S_IRUSR | S_IWUSR, s_st.st_dev));
-  ITRY (bd_fd = open (tmpdev, O_RDONLY));
-  ITRY (ioctl(bd_fd,BLKSSZGET,&blocksize));
-  ITRY (ioctl(s_fd,FIBMAP,&boots));
-  ITRY (ioctl (bd_fd, BIODASDRWTB, &boots));
-  PRINT_LEVEL (1, "Bootmap is in block no: 0x%08x\n", boots);
-  close (bd_fd);
-  close(s_fd);
-  ITRY (unlink(tmpdev));
-  /* Now patch the bootsector */
-  ITRY (stat (o->bootsect, &b_st));
-  if ((sectsize = b_st.st_size) > blocksize )
-    {
-      ERROR_LEVEL (0,"Bootsector is larger than sectorsize of volume %d vs %d\n", sectsize, blocksize);
-      rc = -1;
-      errno = EINVAL;
-    }
-  ITRY (b_fd = open (o->bootsect, O_RDONLY));
-  ITRY (read (b_fd, buffer, sectsize));
-  memset (buffer + 0xe0, 0, 8);
-  *(int *) (buffer + 0xe0) = boots;
-  if ( o -> testlevel <= 0 ) {
-    ITRY (write (d_fd, buffer, sectsize));
-    ITRY (lseek (d_fd, blocksize, SEEK_SET));
-    ITRY (write (d_fd, buffer, sectsize));
-  }
-  close (b_fd);
-  close (d_fd);
-  return rc;
-}
-
-int
-do_silo (struct silo_options *o)
-{
-  int rc = 0;
-
-  int device_fd;
-  int image_fd;
-  struct blocklist blklist;
-  memset (&blklist, 0, sizeof (struct blocklist));
-  ITRY (add_file_to_blocklist (o->image, &blklist, 0x00000000));
-  if (o->parmfile)
-    {
-      ITRY (add_file_to_blocklist (o->parmfile, &blklist, 0x00008000));
-    }
-  if (o->ramdisk)
-    {
-      ITRY (add_file_to_blocklist (o->ramdisk, &blklist, 0x00800000));
-    }
-  ITRY (write_bootsect (o, &blklist));
-  return rc;
-}
-
-int
-main (int argct, char *argv[])
-{
-  int rc = 0;
-  char *save=NULL;
-  char *tmpdir=getenv("TMPDIR");
-  if (tmpdir) {
-    NTRY( save=(char*)malloc(strlen(tmpdir)));
-    NTRY( strncpy(save,tmpdir,strlen(tmpdir)));
-  }
-  ITRY( setenv("TMPDIR",".",1));
-  ITRY (parse_options (&silo_options, argct, argv));
-  ITRY (verify_options (&silo_options));
-  if ( silo_options.testlevel > 0 ) {
-    printf ("WARNING: silo does not modify your volume. Use -t2 to change IPL records\n");
-  }
-  ITRY (do_silo (&silo_options));
-  if ( save )
-    ITRY( setenv("TMPDIR",save,1)); 
-  return rc;
-}