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1.1 root 1: #ifndef __STROPTS_H__
2: #define __STROPTS_H__
3:
4: /*
5: * User-level information about STREAMS ioctl ()'s and system calls, derived
6: * from the System V manual pages for getmsg (2), putmsg (2) and streamio (7)
7: *
8: * The actual numeric values for pre-R4 constants have been taken from the
9: * iBCS2 specification, pp6-56 through 5-58.
10: *
11: * Values added in the System V Release 4 edition of STREAMS have numeric
12: * values taken from the System V ABI, Intel386 Supplement pp6-70 through
13: * 6-75
14: */
15:
16: #include <common/ccompat.h>
17: #include <sys/types.h>
18: #include <sys/conf.h>
19: #include <sys/stropts.h>
20: #include <sys/poll.h>
21:
22:
23: /*
24: * Structure used to indicate size and length of data and control buffers
25: * in the getmsg (2) and putmsg (2) system calls.
26: */
27:
28: struct strbuf {
29: int maxlen; /* Maximum buffer length */
30: int len; /* Actual data length */
31: _VOID * buf; /* Points to data buffer */
32: };
33:
34:
35: /*
36: * Flags for getmsg (2)/putmsg (2), defines whether data received/put is
37: * in a high-priority or normal-priority STREAMS message.
38: */
39:
40: #define RS_HIPRI 0x01
41:
42:
43: /*
44: * Flags for getpmsg (2)/putpmsg (2) that control whether a message received
45: * or sent is high priority, normal priority, or a member of a priority band.
46: */
47:
48: #define MSG_HIPRI 0x01
49: #define MSG_ANY 0x02
50: #define MSG_BAND 0x04
51:
52:
53: /*
54: * Return value mask for getmsg (2) and getpmsg (2) that defines whether
55: * there is more control or data information in the current message than
56: * could be retrieved into the supplied buffers.
57: */
58:
59: #define MORECTL 1
60: #define MOREDATA 2
61:
62:
63: /*
64: * Function prototypes for system calls.
65: */
66:
67: __EXTERN_C_BEGIN__
68:
69: int getmsg __PROTO ((int fd, struct strbuf * ctlptr,
70: struct strbuf * dataptr, int * flagsp));
71: int getpmsg __PROTO ((int fd, struct strbuf * ctlptr,
72: struct strbuf * dataptr, int * bandp,
73: int * flagsp));
74: int putmsg __PROTO ((int fd, __CONST__ struct strbuf * ctlptr,
75: __CONST__ struct strbuf * dataptr, int flags));
76: int putpmsg __PROTO ((int fd, const struct strbuf * ctlptr,
77: __CONST__ struct strbuf * dataptr, int band,
78: int flags));
79:
80: __EXTERN_C_END__
81:
82:
83: /*
84: * Structure used in I_FLUSHBAND to control how priority bands are flushed.
85: */
86:
87: struct bandinfo {
88: unsigned char bi_pri; /* Priority band number */
89: int bi_flag;
90: };
91:
92:
93: /*
94: * structure used in I_PEEK ioctl () to retrieve data waiting at the stream
95: * head without consuming it.
96: */
97:
98: struct strpeek {
99: struct strbuf ctlbuf;
100: struct strbuf databuf;
101: long flags;
102: };
103:
104:
105: /*
106: * structure used in I_STR ioctl () to send an arbitrary other ioctl ()
107: * command downstream to a STREAMS module or driver.
108: */
109:
110: struct strioctl {
111: int ic_cmd; /* ioctl () command to send */
112: int ic_timeout; /* seconds to wait for reply */
113: int ic_len; /* length of data to send */
114: char * ic_dp; /* data buffer for send/receive */
115: };
116:
117:
118: /*
119: * structure used in the I_RECVFD ioctl () to retrieve supplementary data
120: * about the sent file descriptor.
121: */
122:
123: struct strrecvfd {
124: int fd; /* arriving file descriptor */
125: o_uid_t uid; /* uid of sending stream */
126: o_gid_t gid; /* gid of sending stream */
127: char fill [8]; /* reserved */
128: };
129:
130:
131: /*
132: * Structure used in the I_FDINSERT ioctl () to do whatever the I_FDINSERT
133: * ioctl does.
134: */
135:
136: struct strfdinsert {
137: struct strbuf ctlbuf;
138: struct strbuf databuf;
139: long flags;
140: int fildes;
141: int offset;
142: };
143:
144:
145: /*
146: * information structure used in the I_LIST ioctl () to retrieve the names
147: * of all the modules and drivers on a stream.
148: */
149:
150: struct str_list {
151: int sl_nmods; /* number of entries in sl_modlist */
152: struct str_mlist * sl_modlist; /* information array */
153: };
154:
155: struct str_mlist {
156: char l_name [FMNAMESZ + 1];
157: };
158:
159:
160: /*
161: * ioctl (2) command values for controlling STREAMS drivers and modules
162: * directly under STREAMS, as opposed to other ioctl ()'s which are passed
163: * to drivers and modules for emulation of old-style device access.
164: */
165:
166: #define STREAM_I ('S' << 8)
167: #define I_NREAD (STREAM_I | 1) /* get message length, count */
168: #define I_PUSH (STREAM_I | 2) /* push named module */
169: #define I_POP (STREAM_I | 3) /* pop topmost module */
170: #define I_LOOK (STREAM_I | 4) /* get topmost module name */
171: #define I_FLUSH (STREAM_I | 5) /* flush read/write side */
172: #define I_SRDOPT (STREAM_I | 6) /* set the stream head read mode */
173: #define I_GRDOPT (STREAM_I | 7) /* get the stream head read mode */
174: #define I_STR (STREAM_I | 8) /* send an ioctl () message downstream */
175: #define I_SETSIG (STREAM_I | 9) /* register for SIGPOLL signal */
176: #define I_GETSIG (STREAM_I | 10) /* return registered event mask */
177: #define I_FIND (STREAM_I | 11) /* locate named module on stream */
178: #define I_LINK (STREAM_I | 12) /* link two streams */
179: #define I_UNLINK (STREAM_I | 13) /* unlink two streams */
180: #define I_RECVFD (STREAM_I | 14) /* receive file descriptor from pipe */
181: #define I_PEEK (STREAM_I | 15) /* examine stream head data */
182: #define I_FDINSERT (STREAM_I | 16) /* NOT SUPPORTED */
183: #define I_SENDFD (STREAM_I | 17) /* send file descriptor to pipe */
184:
185: /* Subsequent values are not covered by iBCS2 (defined for R4 STREAMS only) */
186:
187: #define I_SWROPT (STREAM_I | 19) /* set stream write mode */
188: #define I_GWROPT (STREAM_I | 20) /* get stream write mode */
189: #define I_LIST (STREAM_I | 21) /* get name of all modules/drivers */
190: #define I_PLINK (STREAM_I | 22) /* create persistent link */
191: #define I_PUNLINK (STREAM_I | 23) /* undo persistent link */
192: #define I_SETEV (STREAM_I | 24) /* ??? */
193: #define I_GETEV (STREAM_I | 25) /* ??? */
194: #define I_STREV (STREAM_I | 26) /* ??? */
195: #define I_UNSTREV (STREAM_I | 27) /* ??? */
196: #define I_FLUSHBAND (STREAM_I | 28) /* flush priority band */
197: #define I_CKBAND (STREAM_I | 29) /* check for existence of priority band */
198: #define I_GETBAND (STREAM_I | 30) /* get band of first message */
199: #define I_ATMARK (STREAM_I | 31) /* is current message marked */
200: #define I_SETCLTIME (STREAM_I | 32) /* set drain timeout for stream */
201: #define I_GETCLTIME (STREAM_I | 33) /* get the curret close timeout */
202: #define I_CANPUT (STREAM_I | 34) /* check if band is writeable */
203:
204:
205: /*
206: * Events that may be requested for in I_SETSIG that can cause a SIGPOLL
207: * to be sent to a process.
208: */
209:
210: #define S_INPUT __POLL_INPUT /* any message other than M_PCPROTO */
211: #define S_HIPRI __POLL_HIPRI /* a high priority message has arrived */
212: #define S_OUTPUT __POLL_OUTPUT /* the write queue is no longer full */
213: #define S_MSG __POLL_008 /* a SIGPOLL signal message has arrived */
214:
215: #define S_ERROR __POLL_010 /* an M_ERROR message has arrived */
216: #define S_HANGUP __POLL_020 /* an M_HANGUP message has arrived */
217: #define S_RDNORM __POLL_RDNORM /* a non-priority message has arrived */
218: #define S_WRNORM __POLL_OUTPUT /* alias for S_OUTPUT */
219: #define S_RDBAND __POLL_RDBAND /* a priority band message has arrived */
220: #define S_WRBAND __POLL_WRBAND /* a priority band is writeable */
221: #define S_BANDURG __POLL_BANDURG /* request SIGURG rather than SIGPOLL */
222:
223:
224: /*
225: * Write mode flags that may be specified by I_SWROPT ioctl ().
226: */
227:
228: #define SNDZERO 1 /*
229: * Send a zero-length message when a
230: * write of 0 bytes occurs.
231: */
232: #define SNDPIPE 2 /*
233: * Send a zero-length message down a
234: * a STREAMS pipe or FIFO.
235: */
236:
237: /*
238: * Flag values used by the I_ATMARK ioctl ()
239: */
240:
241: #define ANYMARK 0x01 /* check for a marked message */
242: #define LASTMARK 0x02 /* check for only marked message */
243:
244:
245: #endif /* ! defined (__STROPTS_H__) */
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