char buffer[BUF_LEN];# M! w9 C/ q6 I8 R; j
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EXPORT_NO_SYMBOLS; /* don't export anything */' ~3 f; Z. ~% g7 \, J+ U- g- F
/ Z- Q& D4 m/ t- r E! Q; p static ssize_t buf_read( struct file *filp,char *buf,size_t count,
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2 ^' i5 J ^1 P ^7 Z loff_t *ppos )
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" R, A4 _& z1 ]5 [ return count;
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' m" A; L, J8 U4 s q static ssize_t buf_write( struct file *filp,const char *buf,size_t count,
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loff_t *ppos )
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{
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return count;
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/ W5 ~- Z- T! ` static int buf_open( struct inode *inode,struct file *filp )1 v8 k7 `4 c0 Y
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MOD_INC_USE_COUNT;4 e, O. C( j# E3 d' u. Y
1 A: T+ U' j" f: y return 0;! o% v' h" E9 C8 g6 K) Z
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static int buf_release( struct inode *inode,struct file *filp )& e3 G% B. y6 D9 p9 i3 i
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MOD_DEC_USE_COUNT;
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return 0;1 |9 s) D8 X; T$ H" e1 Y
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static struct file_operations buf_fops = {
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- p7 S. a& J! w2 s NULL, /* lseek */
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}' x/ [/ O% m# m! M buf_read,
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8 X% i! W9 Z3 s+ G* [ buf_write,0 P: }8 {# h" [7 O2 C
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NULL, /* readdir */
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2 f0 C+ E: r. H# o3 |5 {" `! L$ q* O NULL, /* poll */2 w& J/ K. ]: E; H0 _1 g$ \& w A
- q; ^% x8 P' }% W NULL, /* ioctl */8 J; r9 N0 X+ F) O' I3 @: C# Z$ T
Q( _& l) C- ^) f7 ~( K NULL, /* mmap */
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buf_open, /* open */( O. a7 d1 {9 t4 W
- g R% B! a6 D' H) ~4 A NULL, /* flush */4 E2 R" R3 o! X4 O4 a! }- Z& {: ?
3 Z6 K! `7 Q6 t+ \# J buf_release, /* release */
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8 m4 v2 r0 d, q2 q& r9 h& F NULL, /* fsync */
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4 t# ?) r; ^- Q" L. d5 p7 D! p NULL, /* fasync */! C, g+ B0 `; a3 w1 x1 _
; ?2 S1 J6 w, L2 B# {6 g+ a: E0 G NULL, /* check_media_change */
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/ Q$ V1 z$ `5 h) g$ L NULL, /* revalidate */
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NULL /* lock */
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/ h7 v8 s3 H) L' l1 k };
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static int buf_init(): u) Y$ k7 h! r1 e
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{
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9 w; H* D/ O4 B& t5 Y# l4 Z& \7 ^ int result;6 y, U: ]+ x2 W
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flag = 0; |