3628c5b631
headers (like most other ioctl-related headers). Didn't fix spelling errors and other warts.
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* Copyright (c) 1995 Ugen J.S.Antsilevich
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*
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* Redistribution and use in source forms, with and without modification,
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* are permitted provided that this entire comment appears intact.
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*
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* Redistribution in binary form may occur without any restrictions.
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* Obviously, it would be nice if you gave credit where credit is due
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* but requiring it would be too onerous.
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*
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* This software is provided ``AS IS'' without any warranties of any kind.
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*
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* Snoop stuff.
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*/
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#ifndef _SYS_SNOOP_H_
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#define _SYS_SNOOP_H_
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#ifndef KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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#ifdef KERNEL
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#define SNOOP_MINLEN (4*1024) /* This should be power of 2.
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* 4K tested to be the minimum
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* for which on normal tty
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* usage there is no need to
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* allocate more.
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*/
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#define SNOOP_MAXLEN (64*1024) /* This one also,64K enough
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* If we grow more,something
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* really bad in this world..
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*/
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/*
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* This is the main snoop per-device
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* structure...
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*/
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struct snoop {
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dev_t snp_target; /* major/minor number of device*/
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struct tty *snp_tty; /* tty device pointer */
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u_long snp_len; /* buffer data length */
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u_long snp_base; /* buffer data base */
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u_long snp_blen; /* Overall buffer len */
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caddr_t snp_buf; /* Data buffer */
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int snp_flags; /* Flags place */
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#define SNOOP_NBIO 0x0001
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#define SNOOP_ASYNC 0x0002
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#define SNOOP_OPEN 0x0004
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#define SNOOP_RWAIT 0x0008
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#define SNOOP_OFLOW 0x0010
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#define SNOOP_DOWN 0x0020
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struct selinfo snp_sel; /* Selection info */
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};
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/* XXX several wrong storage classes and types here. */
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int snpdown __P((struct snoop *snp));
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int snpin __P((struct snoop *snp, char *buf, int n));
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int snpinc __P((struct snoop *snp, char c));
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#endif /* KERNEL */
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/*
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* Theese are snoop io controls
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* SNPSTTY accepts 'struct snptty' as input.
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* If ever type or unit set to -1,snoop device
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* detached from it's current tty.
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*/
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#define SNPSTTY _IOW('T', 90, dev_t)
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#define SNPGTTY _IOR('T', 89, dev_t)
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/*
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* Theese values would be returned by FIONREAD ioctl
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* instead of number of characters in buffer in case
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* of specific errors.
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*/
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#define SNP_OFLOW -1
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#define SNP_TTYCLOSE -2
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#define SNP_DETACH -3
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#endif /* !_SYS_SNOOP_H_ */
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