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glibc/bits/stropts.h

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/* Copyright (C) 1998-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _STROPTS_H
# error "Never include <bits/stropts.h> directly; use <stropts.h> instead."
#endif
#ifndef _BITS_STROPTS_H
#define _BITS_STROPTS_H 1
#include <bits/types.h>
/* Macros used as `request' argument to `ioctl'. */
#define __SID ('S' << 8)
#define I_NREAD (__SID | 1) /* Counts the number of data bytes in the data
block in the first message. */
#define I_PUSH (__SID | 2) /* Push STREAMS module onto top of the current
STREAM, just below the STREAM head. */
#define I_POP (__SID | 3) /* Remove STREAMS module from just below the
STREAM head. */
#define I_LOOK (__SID | 4) /* Retrieve the name of the module just below
the STREAM head and place it in a character
string. */
#define I_FLUSH (__SID | 5) /* Flush all input and/or output. */
#define I_SRDOPT (__SID | 6) /* Sets the read mode. */
#define I_GRDOPT (__SID | 7) /* Returns the current read mode setting. */
#define I_STR (__SID | 8) /* Construct an internal STREAMS `ioctl'
message and send that message downstream. */
#define I_SETSIG (__SID | 9) /* Inform the STREAM head that the process
wants the SIGPOLL signal issued. */
#define I_GETSIG (__SID |10) /* Return the events for which the calling
process is currently registered to be sent
a SIGPOLL signal. */
#define I_FIND (__SID |11) /* Compares the names of all modules currently
present in the STREAM to the name pointed to
by `arg'. */
#define I_LINK (__SID |12) /* Connect two STREAMs. */
#define I_UNLINK (__SID |13) /* Disconnects the two STREAMs. */
#define I_PEEK (__SID |15) /* Allows a process to retrieve the information
in the first message on the STREAM head read
queue without taking the message off the
queue. */
#define I_FDINSERT (__SID |16) /* Create a message from the specified
buffer(s), adds information about another
STREAM, and send the message downstream. */
#define I_SENDFD (__SID |17) /* Requests the STREAM associated with `fildes'
to send a message, containing a file
pointer, to the STREAM head at the other end
of a STREAMS pipe. */
#define I_RECVFD (__SID |14) /* Non-EFT definition. */
#define I_SWROPT (__SID |19) /* Set the write mode. */
#define I_GWROPT (__SID |20) /* Return the current write mode setting. */
#define I_LIST (__SID |21) /* List all the module names on the STREAM, up
to and including the topmost driver name. */
#define I_PLINK (__SID |22) /* Connect two STREAMs with a persistent
link. */
#define I_PUNLINK (__SID |23) /* Disconnect the two STREAMs that were
connected with a persistent link. */
#define I_FLUSHBAND (__SID |28) /* Flush only band specified. */
#define I_CKBAND (__SID |29) /* Check if the message of a given priority
band exists on the STREAM head read
queue. */
#define I_GETBAND (__SID |30) /* Return the priority band of the first
message on the STREAM head read queue. */
#define I_ATMARK (__SID |31) /* See if the current message on the STREAM
head read queue is "marked" by some module
downstream. */
#define I_SETCLTIME (__SID |32) /* Set the time the STREAM head will delay when
a STREAM is closing and there is data on
the write queues. */
#define I_GETCLTIME (__SID |33) /* Get current value for closing timeout. */
#define I_CANPUT (__SID |34) /* Check if a certain band is writable. */
/* Used in `I_LOOK' request. */
#define FMNAMESZ 8 /* compatibility w/UnixWare/Solaris. */
/* Flush options. */
#define FLUSHR 0x01 /* Flush read queues. */
#define FLUSHW 0x02 /* Flush write queues. */
#define FLUSHRW 0x03 /* Flush read and write queues. */
#ifdef __USE_GNU
# define FLUSHBAND 0x04 /* Flush only specified band. */
#endif
/* Possible arguments for `I_SETSIG'. */
#define S_INPUT 0x0001 /* A message, other than a high-priority
message, has arrived. */
#define S_HIPRI 0x0002 /* A high-priority message is present. */
#define S_OUTPUT 0x0004 /* The write queue for normal data is no longer
full. */
#define S_MSG 0x0008 /* A STREAMS signal message that contains the
SIGPOLL signal reaches the front of the
STREAM head read queue. */
#define S_ERROR 0x0010 /* Notification of an error condition. */
#define S_HANGUP 0x0020 /* Notification of a hangup. */
#define S_RDNORM 0x0040 /* A normal message has arrived. */
#define S_WRNORM S_OUTPUT
#define S_RDBAND 0x0080 /* A message with a non-zero priority has
arrived. */
#define S_WRBAND 0x0100 /* The write queue for a non-zero priority
band is no longer full. */
#define S_BANDURG 0x0200 /* When used in conjunction with S_RDBAND,
SIGURG is generated instead of SIGPOLL when
a priority message reaches the front of the
STREAM head read queue. */
/* Option for `I_PEEK'. */
#define RS_HIPRI 0x01 /* Only look for high-priority messages. */
/* Options for `I_SRDOPT'. */
#define RNORM 0x0000 /* Byte-STREAM mode, the default. */
#define RMSGD 0x0001 /* Message-discard mode. */
#define RMSGN 0x0002 /* Message-nondiscard mode. */
#define RPROTDAT 0x0004 /* Deliver the control part of a message as
data. */
#define RPROTDIS 0x0008 /* Discard the control part of a message,
delivering any data part. */
#define RPROTNORM 0x0010 /* Fail `read' with EBADMSG if a message
containing a control part is at the front
of the STREAM head read queue. */
#ifdef __USE_GNU
# define RPROTMASK 0x001C /* The RPROT bits */
#endif
/* Possible mode for `I_SWROPT'. */
#define SNDZERO 0x001 /* Send a zero-length message downstream when a
`write' of 0 bytes occurs. */
#ifdef __USE_GNU
# define SNDPIPE 0x002 /* Send SIGPIPE on write and putmsg if
sd_werror is set. */
#endif
/* Arguments for `I_ATMARK'. */
#define ANYMARK 0x01 /* Check if the message is marked. */
#define LASTMARK 0x02 /* Check if the message is the last one marked
on the queue. */
/* Argument for `I_UNLINK'. */
#ifdef __USE_GNU
# define MUXID_ALL (-1) /* Unlink all STREAMs linked to the STREAM
associated with `fildes'. */
#endif
/* Macros for `getmsg', `getpmsg', `putmsg' and `putpmsg'. */
#define MSG_HIPRI 0x01 /* Send/receive high priority message. */
#define MSG_ANY 0x02 /* Receive any message. */
#define MSG_BAND 0x04 /* Receive message from specified band. */
/* Values returned by getmsg and getpmsg */
#define MORECTL 1 /* More control information is left in
message. */
#define MOREDATA 2 /* More data is left in message. */
/* Structure used for the I_FLUSHBAND ioctl on streams. */
struct bandinfo
{
unsigned char bi_pri;
int bi_flag;
};
struct strbuf
{
int maxlen; /* Maximum buffer length. */
int len; /* Length of data. */
char *buf; /* Pointer to buffer. */
};
struct strpeek
{
struct strbuf ctlbuf;
struct strbuf databuf;
t_uscalar_t flags; /* UnixWare/Solaris compatibility. */
};
struct strfdinsert
{
struct strbuf ctlbuf;
struct strbuf databuf;
t_uscalar_t flags; /* UnixWare/Solaris compatibility. */
int fildes;
int offset;
};
struct strioctl
{
int ic_cmd;
int ic_timout;
int ic_len;
char *ic_dp;
};
struct strrecvfd
{
int fd;
uid_t uid;
gid_t gid;
char __fill[8]; /* UnixWare/Solaris compatibility */
};
struct str_mlist
{
char l_name[FMNAMESZ + 1];
};
struct str_list
{
int sl_nmods;
struct str_mlist *sl_modlist;
};
#endif /* bits/stropts.h */
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