source: buchla-68k/libcio/fsinit.c@ 7ecfb7b

Last change on this file since 7ecfb7b was 7ecfb7b, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Unused variables and parameters.
  • Property mode set to 100644
File size: 4.7 KB
Line 
1/*
2 ============================================================================
3 fsinit.c -- Initialize file system
4 Version 9 -- 1988-01-31 -- D.N. Lynx Crowe
5 ============================================================================
6*/
7
8#include "ram.h"
9
10int8_t *Stdbufs; /* buffer chain pointer */
11
12int8_t Wrkbuf[BPSEC]; /* sector work buffer */
13
14int32_t Stdbuf[MAXDFILE][BUFSIZL]; /* standard buffers */
15
16FILE Cbuffs[NSTREAMS]; /* stream file control table */
17
18struct fcb _fcbtab[MAXDFILE]; /* fcb table */
19
20struct channel chantab[MAXCHAN]; /* channel table: relates fd's to devices */
21
22#if TBUFFER
23
24/* WARNING: this ONLY works for 512 byte sectors, 9 sectors per track */
25
26int16_t _b_tbuf[9][256]; /* the track buffer */
27
28int16_t _b_trak; /* current track */
29int16_t _b_side; /* current side */
30int16_t _b_sect; /* current sector */
31int16_t _b_tsec; /* current base sector of current track */
32
33#endif
34
35/*
36 ============================================================================
37 _badfio() -- set "bad fd" error on I/O
38 ============================================================================
39*/
40
41int16_t _badfio(io_arg arg, int8_t *buff, int16_t len)
42{
43 (void)arg;
44 (void)buff;
45 (void)len;
46
47 errno = EBADF; /* set bad fd code */
48 return(FAILURE); /* return with an error indication */
49}
50
51/*
52 ============================================================================
53 _badfc() -- set "bad fd" error on close
54 ============================================================================
55*/
56
57int16_t _badfc(io_arg arg)
58{
59 (void)arg;
60
61 errno = EBADF; /* set bad fd code */
62 return(FAILURE); /* return with an error indication */
63}
64
65/*
66 ============================================================================
67 _nopo() -- null open with no error condition
68 ============================================================================
69*/
70
71int16_t _nopo(int8_t *name, int16_t flag, int16_t mode, struct channel *chp, struct devtabl *dp)
72{
73 (void)name;
74 (void)flag;
75 (void)mode;
76 (void)chp;
77 (void)dp;
78
79 return(SUCCESS); /* return with a non-error indication */
80}
81
82/*
83 ============================================================================
84 _nopc() -- null close with no error condition
85 ============================================================================
86*/
87
88int16_t _nopc(io_arg arg)
89{
90 (void)arg;
91
92 return(SUCCESS); /* return with a non-error indication */
93}
94
95/*
96 ============================================================================
97 InitCH() -- Initialize chantab structure entry
98 ============================================================================
99*/
100
101void InitCH(struct channel *cp, int8_t rdi, int8_t wri, int8_t ioi, int8_t ski, chclo cfp, io_arg charg)
102{
103 cp->c_read = rdi;
104 cp->c_write = wri;
105 cp->c_ioctl = ioi;
106 cp->c_seek = ski;
107 cp->c_close = cfp;
108 cp->c_arg = charg;
109}
110
111/*
112 ============================================================================
113 Init_CB() -- Initialize Cbuff structure entry
114 ============================================================================
115*/
116
117void Init_CB(FILE *fp, int8_t flags, int8_t unit, int32_t *bufad, int16_t bufsize)
118{
119 fp->_bp = (int8_t *)0L;
120 fp->_bend = (int8_t *)0L;
121 fp->_buff = (int8_t *)bufad;
122 fp->_flags = flags;
123 fp->_unit = unit;
124 fp->_bytbuf = 0;
125 fp->_buflen = bufsize;
126};
127
128/*
129 ============================================================================
130 InitFS() -- Initialize file system
131 ============================================================================
132*/
133
134void InitFS(void)
135{
136 register int16_t i;
137
138 memset(_fcbtab, 0, sizeof _fcbtab); /* clear fcb table */
139 memsetw(Stdbuf, 0, sizeof Stdbuf / 2); /* clear buffers */
140
141 Init_CB(stdin, _BUSY, 0, (int8_t *)0L, BUFSIZ); /* stdin */
142 Init_CB(stdout, _BUSY, 1, (int8_t *)0L, 1); /* stdout */
143 Init_CB(stderr, _BUSY, 2, (int8_t *)0L, 1); /* stderr */
144
145 for (i = 3; i < NSTREAMS; i++)
146 Init_CB(&Cbuffs[i], 0, 0, (int8_t *)0L, 0);
147
148 Stdbuf[0][0] = 0L; /* initialize the buffer list */
149
150 for (i = 1; i < MAXDFILE; i++)
151 Stdbuf[i][0] = (int32_t)Stdbuf[i-1];
152
153 Stdbufs = Stdbuf[MAXDFILE-1];
154
155 InitCH(&chantab[0], 2, 0, 1, 0, _nopc, (io_arg)CON_DEV ); /* 0 - stdin */
156 InitCH(&chantab[1], 0, 2, 1, 0, _nopc, (io_arg)CON_DEV ); /* 1 - stdout */
157 InitCH(&chantab[2], 0, 2, 1, 0, _nopc, (io_arg)CON_DEV ); /* 2 - stderr */
158
159 for (i = 3; i < MAXCHAN; i++) /* 3..MAXCHAN-1 - not preassigned */
160 InitCH(&chantab[i], 0, 0, 0, 0, _badfc, (io_arg)0L );
161
162 _bpbin = FALSE; /* BPB isn't in memory */
163 _dirin = FALSE; /* directory isn't in memory */
164 _fatin = FALSE; /* FAT isn't in memory */
165 _fatmod = FALSE; /* FAT hasn't been changed */
166 _dirmod = FALSE; /* directory hasn't been changed */
167
168#if TBUFFER
169 _b_trak = -1; /* no track in the buffer */
170 _b_side = -1; /* ... */
171#endif
172}
173
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