-
Notifications
You must be signed in to change notification settings - Fork 92
/
cckdswap64.c
172 lines (145 loc) · 6.37 KB
/
cckdswap64.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/* CCKDSWAP64.C (C) Copyright Roger Bowler, 1999-2012 */
/* Swap the 'endianness' of a CCKD64 file. */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/*-------------------------------------------------------------------*/
/* This module changes the `endianness' of a compressed CKD file. */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#include "hercules.h"
#include "dasdblks.h"
#include "ccwarn.h"
#define UTILITY_NAME "cckdswap64"
#define UTILITY_DESC "Swap 'endianness' of a CCKD64 file"
/*-------------------------------------------------------------------*/
/* Swap the `endianness' of cckd file */
/*-------------------------------------------------------------------*/
int syntax( const char* pgm );
int main ( int argc, char *argv[])
{
char *pgm; /* less any extension (.ext) */
CKD_DEVHDR devhdr; /* CKD device header */
CCKD64_DEVHDR cdevhdr; /* Compressed CKD device hdr */
int level = 0; /* Chkdsk level */
int force = 0; /* 1=swap if OPENED bit on */
int rc; /* Return code */
int i; /* Index */
int bigend; /* 1=big-endian file */
DEVBLK devblk; /* DEVBLK */
DEVBLK *dev=&devblk; /* -> DEVBLK */
INITIALIZE_UTILITY( UTILITY_NAME, UTILITY_DESC, &pgm );
/* parse the arguments */
for (argc--, argv++ ; argc > 0 ; argc--, argv++)
{
if(**argv != '-') break;
switch(argv[0][1])
{
case '0':
case '1':
case '2':
case '3': if (argv[0][2] != '\0') return syntax( pgm );
level = (argv[0][1] & 0xf);
break;
case 'f': if (argv[0][2] != '\0') return syntax( pgm );
force = 1;
break;
default: return syntax( pgm );
}
}
if (argc < 1) return syntax( pgm );
for (i=0; i < argc; i++)
{
memset( dev, 0, sizeof( DEVBLK ));
dev->batch = 1;
/* open the input file */
hostpath( dev->filename, argv[i], sizeof( dev->filename ));
if ((dev->fd = HOPEN( dev->filename, O_RDWR | O_BINARY )) < 0)
{
// "%1d:%04X CCKD file %s: error in function %s: %s"
FWRMSG( stderr, HHC00354, "E", LCSS_DEVNUM,
dev->filename, "open()", strerror( errno ));
continue;
}
/* read the CKD device header */
if ((rc = read( dev->fd, &devhdr, CKD_DEVHDR_SIZE )) < CKD_DEVHDR_SIZE)
{
// "%1d:%04X CCKD file %s: error in function %s at offset 0x%16.16"PRIX64": %s"
FWRMSG( stderr, HHC00355, "E", LCSS_DEVNUM,
dev->filename, "read()", (U64) 0, rc < 0 ? strerror( errno ) : "incomplete" );
close( dev->fd );
continue;
}
if (!is_dh_devid_typ( devhdr.dh_devid, ANY64_CMP_OR_SF_TYP ))
{
// "%1d:%04X CCKD file %s: not a compressed dasd file"
FWRMSG( stderr, HHC00356, "E", LCSS_DEVNUM, dev->filename );
close( dev->fd );
continue;
}
dev->cckd64 = 1;
/* read the compressed CKD device header */
if ((rc = read (dev->fd, &cdevhdr, CCKD64_DEVHDR_SIZE)) < CCKD64_DEVHDR_SIZE)
{
// "%1d:%04X CCKD file %s: error in function %s at offset 0x%16.16"PRIX64": %s"
FWRMSG( stderr, HHC00355, "E", LCSS_DEVNUM, dev->filename,
"read()", (U64)CCKD64_DEVHDR_POS, rc < 0 ? strerror( errno ) : "incomplete" );
close (dev->fd);
continue;
}
/* Check the OPENED bit */
if (!force && (cdevhdr.cdh_opts & CCKD_OPT_OPENED))
{
// "%1d:%04X CCKD file %s: opened bit is on, use -f"
FWRMSG( stderr, HHC00352, "E", LCSS_DEVNUM, dev->filename );
close (dev->fd);
continue;
}
/* get the byte order of the file */
bigend = (cdevhdr.cdh_opts & CCKD_OPT_BIGEND);
/* call chkdsk */
if (cckd64_chkdsk (dev, level) < 0)
{
// "%1d:%04X CCKD file %s: check disk errors"
FWRMSG( stderr, HHC00353, "E", LCSS_DEVNUM, dev->filename );
close (dev->fd);
continue;
}
/* re-read the compressed CKD device header */
if (lseek (dev->fd, CCKD64_DEVHDR_POS, SEEK_SET) < 0)
{
// "%1d:%04X CCKD file %s: error in function %s at offset 0x%16.16"PRIX64": %s"
FWRMSG( stderr, HHC00355, "E", LCSS_DEVNUM, dev->filename,
"lseek()", (U64)CCKD64_DEVHDR_POS, strerror( errno ));
close (dev->fd);
continue;
}
if ((rc = read (dev->fd, &cdevhdr, CCKD64_DEVHDR_SIZE)) < CCKD64_DEVHDR_SIZE)
{
// "%1d:%04X CCKD file %s: error in function %s at offset 0x%16.16"PRIX64": %s"
FWRMSG( stderr, HHC00355, "E", LCSS_DEVNUM, dev->filename,
"read()", (U64)CCKD64_DEVHDR_POS, rc < 0 ? strerror( errno ) : "incomplete" );
close (dev->fd);
continue;
}
/* swap the byte order of the file if chkdsk didn't do it for us */
if (bigend == (cdevhdr.cdh_opts & CCKD_OPT_BIGEND))
{
// "%1d:%04X CCKD file %s: converting to %s"
WRMSG( HHC00357, "I", LCSS_DEVNUM, dev->filename,
(cdevhdr.cdh_opts & CCKD_OPT_BIGEND) ?
"little-endian" : "big-endian" );
if (cckd64_swapend (dev) < 0)
// "%1d:%04X CCKD file %s: error during swap"
FWRMSG( stderr, HHC00378, "E", LCSS_DEVNUM, dev->filename );
}
close (dev->fd);
} /* for each arg */
return 0;
} /* end main */
int syntax( const char* pgm )
{
WRMSG( HHC02495, "I", pgm );
return -1;
} /* end function syntax */