forked from mtalexander/hercules-390
-
Notifications
You must be signed in to change notification settings - Fork 0
/
cckdswap.c
193 lines (168 loc) · 6.93 KB
/
cckdswap.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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
/* CCKDSWAP.C (c) Copyright Roger Bowler, 1999-2012 */
/* Swap the `endianess' of a compressed CKD file. */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/*-------------------------------------------------------------------*/
/* This module changes the `endianess' of a compressed CKD file. */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#include "hercules.h"
#define UTILITY_NAME "cckdswap"
/*-------------------------------------------------------------------*/
/* Swap the `endianess' of cckd file */
/*-------------------------------------------------------------------*/
int syntax (char *pgm);
int main ( int argc, char *argv[])
{
char *pgmname; /* prog name in host format */
char *pgm; /* less any extension (.ext) */
char msgbuf[512]; /* message build work area */
CKDDASD_DEVHDR devhdr; /* CKD device header */
CCKDDASD_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 */
char *strtok_str = NULL;
/* Set program name */
if ( argc > 0 )
{
if ( strlen(argv[0]) == 0 )
{
pgmname = strdup( UTILITY_NAME );
}
else
{
char path[MAX_PATH];
#if defined( _MSVC_ )
GetModuleFileName( NULL, path, MAX_PATH );
#else
strncpy( path, argv[0], sizeof( path ) );
#endif
pgmname = strdup(basename(path));
#if !defined( _MSVC_ )
strncpy( path, argv[0], sizeof(path) );
#endif
}
}
else
{
pgmname = strdup( UTILITY_NAME );
}
pgm = strtok_r( strdup(pgmname), ".", &strtok_str);
INITIALIZE_UTILITY( pgmname );
/* Display the program identification message */
MSGBUF( msgbuf, MSG_C( HHC02499, "I", pgm, "Swap 'endianess' of a cckd file" ) );
display_version (stderr, msgbuf+10, FALSE);
/* 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;
case 'v': if (argv[0][2] != '\0') return syntax (pgm);
return 0;
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));
dev->fd = HOPEN (dev->filename, O_RDWR|O_BINARY);
if (dev->fd < 0)
{
fprintf(stdout, MSG(HHC00354, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
"open()", strerror(errno)));
continue;
}
/* read the CKD device header */
if ((rc = read (dev->fd, &devhdr, CKDDASD_DEVHDR_SIZE)) < CKDDASD_DEVHDR_SIZE)
{
fprintf(stdout, MSG(HHC00355, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
"read()", (U64)0, rc < 0 ? strerror(errno) : "incomplete"));
close (dev->fd);
continue;
}
if (memcmp(devhdr.devid, "CKD_C370", 8) != 0
&& memcmp(devhdr.devid, "CKD_S370", 8) != 0
&& memcmp(devhdr.devid, "FBA_C370", 8) != 0
&& memcmp(devhdr.devid, "FBA_S370", 8) != 0)
{
fprintf(stdout, MSG(HHC00356, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename));
close (dev->fd);
continue;
}
/* read the compressed CKD device header */
if ((rc = read (dev->fd, &cdevhdr, CCKD_DEVHDR_SIZE)) < CCKD_DEVHDR_SIZE)
{
fprintf(stdout, MSG(HHC00355, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
"read()", (U64)CCKD_DEVHDR_POS, rc < 0 ? strerror(errno) : "incomplete"));
close (dev->fd);
continue;
}
/* Check the OPENED bit */
if (!force && (cdevhdr.options & CCKD_OPENED))
{
fprintf(stdout, MSG(HHC00352, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename));
close (dev->fd);
continue;
}
/* get the byte order of the file */
bigend = (cdevhdr.options & CCKD_BIGENDIAN);
/* call chkdsk */
if (cckd_chkdsk (dev, level) < 0)
{
fprintf(stdout, MSG(HHC00353, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename));
close (dev->fd);
continue;
}
/* re-read the compressed CKD device header */
if (lseek (dev->fd, CCKD_DEVHDR_POS, SEEK_SET) < 0)
{
fprintf(stdout, MSG(HHC00355, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
"lseek()", (U64)CCKD_DEVHDR_POS, strerror(errno)));
close (dev->fd);
continue;
}
if ((rc = read (dev->fd, &cdevhdr, CCKD_DEVHDR_SIZE)) < CCKD_DEVHDR_SIZE)
{
fprintf(stdout, MSG(HHC00355, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
"read()", (U64)CCKD_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.options & CCKD_BIGENDIAN))
{
fprintf(stdout, MSG(HHC00357, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename,
cckd_endian() ? "big-endian" : "little-endian"));
if (cckd_swapend (dev) < 0)
fprintf(stdout, MSG(HHC00378, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename));
}
close (dev->fd);
} /* for each arg */
return 0;
} /* end main */
int syntax (char *pgm)
{
fprintf (stderr, MSG( HHC02495, "I", pgm ) );
return -1;
} /* end function syntax */