annotate src/file.c @ 32:96af12a50fdb

fix cbc_read
author mir3636
date Tue, 22 Jan 2019 15:48:35 +0900
parents 96a5833d0d82
children 7a63dacab7f8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1 //
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
2 // File descriptors
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
3 //
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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4
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
5 #include "types.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
6 #include "defs.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
7 #include "param.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
8 #include "fs.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
9 #include "file.h"
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
10 #include "spinlock.h"
32
96af12a50fdb fix cbc_read
mir3636
parents: 31
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11 #include "proc.h"
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
12
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
13 struct devsw devsw[NDEV];
27
mir3636
parents: 24
diff changeset
14 struct cbc_devsw cbc_devsw[NDEV];
mir3636
parents: 24
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15
0
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
16 struct {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
17 struct spinlock lock;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
18 struct file file[NFILE];
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
19 } ftable;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
20
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
21 void fileinit (void)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
22 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
23 initlock(&ftable.lock, "ftable");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
24 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
25
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
26 // Allocate a file structure.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
27 struct file* filealloc (void)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
28 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
29 struct file *f;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
30
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
31 acquire(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
32
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
33 for (f = ftable.file; f < ftable.file + NFILE; f++) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
34 if (f->ref == 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
35 f->ref = 1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
36 release(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
37 return f;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
38 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
39 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
40
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
41 release(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
42 return 0;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
43 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
44
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
45 // Increment ref count for file f.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
46 struct file* filedup (struct file *f)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
47 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
48 acquire(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
49
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
50 if (f->ref < 1) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
51 panic("filedup");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
52 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
53
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
54 f->ref++;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
55 release(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
56 return f;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
57 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
58
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
59 // Close file f. (Decrement ref count, close when reaches 0.)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
60 void fileclose (struct file *f)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
61 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
62 struct file ff;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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63
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
64 acquire(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
65
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
66 if (f->ref < 1) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
67 panic("fileclose");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
68 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
69
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
70 if (--f->ref > 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
71 release(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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72 return;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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73 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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74
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
75 ff = *f;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
76 f->ref = 0;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
77 f->type = FD_NONE;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
78 release(&ftable.lock);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
79
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
80 if (ff.type == FD_PIPE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
81 pipeclose(ff.pipe, ff.writable);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
82
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
83 } else if (ff.type == FD_INODE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
84 begin_trans();
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
85 iput(ff.ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
86 commit_trans();
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
87 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
88 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
89
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
90 // Get metadata about file f.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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91 int filestat (struct file *f, struct stat *st)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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92 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
93 if (f->type == FD_INODE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
94 ilock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
95 stati(f->ip, st);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
96 iunlock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
97
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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98 return 0;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
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99 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
100
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
101 return -1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
102 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
103
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96af12a50fdb fix cbc_read
mir3636
parents: 31
diff changeset
104 __code cbc_fileread1 (int r, struct file *f, __code (*next)(int ret))
24
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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105 {
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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106 if (r > 0)
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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107 f->off += r;
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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108 iunlock(f->ip);
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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109 goto next(r);
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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110 }
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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111
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
diff changeset
112 __code cbc_fileread (struct file *f, char *addr, int n, __code (*next)(int ret))
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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113 {
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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114 if (f->readable == 0) {
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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115 goto next(-1);
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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116 }
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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117
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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118 if (f->type == FD_PIPE) {
30
mir3636
parents: 27
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119 //goto cbc_piperead(f->pipe, addr, n, next);
mir3636
parents: 27
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120 goto next(-1);
24
36bd61f5c847 rewrite sys_read cbc
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parents: 0
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121 }
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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122
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
diff changeset
123 if (f->type == FD_INODE) {
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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124 ilock(f->ip);
31
mir3636
parents: 30
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125 goto cbc_readi(f->ip, addr, f->off, n, f, next);
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36bd61f5c847 rewrite sys_read cbc
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parents: 0
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126 }
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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127
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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128 goto cbc_panic("fileread");
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
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129 }
36bd61f5c847 rewrite sys_read cbc
mir3636
parents: 0
diff changeset
130
0
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 // Read from file f.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132 int fileread (struct file *f, char *addr, int n)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 int r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 if (f->readable == 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 return -1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 if (f->type == FD_PIPE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 return piperead(f->pipe, addr, n);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 if (f->type == FD_INODE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 ilock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 if ((r = readi(f->ip, addr, f->off, n)) > 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 f->off += r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 iunlock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 return r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 panic("fileread");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 //PAGEBREAK!
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 // Write to file f.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 int filewrite (struct file *f, char *addr, int n)
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 int r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 int i;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 int max;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 int n1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 if (f->writable == 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 return -1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 if (f->type == FD_PIPE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 return pipewrite(f->pipe, addr, n);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 if (f->type == FD_INODE) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 // write a few blocks at a time to avoid exceeding
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 // the maximum log transaction size, including
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 // i-node, indirect block, allocation blocks,
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 // and 2 blocks of slop for non-aligned writes.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 // this really belongs lower down, since writei()
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 // might be writing a device like the console.
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 max = ((LOGSIZE - 1 - 1 - 2) / 2) * 512;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 i = 0;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 while (i < n) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 n1 = n - i;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 if (n1 > max) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 n1 = max;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 begin_trans();
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 ilock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 if ((r = writei(f->ip, addr + i, f->off, n1)) > 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 f->off += r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 iunlock(f->ip);
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 commit_trans();
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 if (r < 0) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 break;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 if (r != n1) {
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 panic("short filewrite");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 i += r;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 return i == n ? n : -1;
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 panic("filewrite");
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 }
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219