1 /* $NetBSD: slave.c,v 1.6 2011/09/15 11:46:19 blymn Exp $ */
4 * Copyright 2009 Brett Lymn <blymn@NetBSD.org>
8 * This code has been donated to The NetBSD Foundation by the Author.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. The name of the author may not be used to endorse or promote products
16 * derived from this software withough specific prior written permission
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/ioctl.h>
46 static const char *returns_enum_names
[] = {
47 "unused", "numeric", "string", "byte", "ERR", "OK", "NULL", "not NULL",
53 * Read the command pipe for the function to execute, gather the args
54 * and then process the command.
57 process_commands(WINDOW
*mainscr
)
59 int len
, maxlen
, argslen
, i
, ret
, type
;
60 char *cmdbuf
, *tmpbuf
, **args
, **tmpargs
;
63 if ((cmdbuf
= malloc(maxlen
)) == NULL
)
64 err(1, "slave cmdbuf malloc failed");
67 if (read(cmdpipe
[READ_PIPE
], &type
, sizeof(int)) < 0)
68 err(1, "slave command type read failed");
70 if (type
!= ret_string
)
71 errx(1, "Unexpected type for command, got %d", type
);
73 if (read(cmdpipe
[READ_PIPE
], &len
, sizeof(int)) < 0)
74 err(1, "slave command len read failed");
76 if ((len
+ 1) > maxlen
) {
78 if ((tmpbuf
= realloc(cmdbuf
, maxlen
)) == NULL
)
79 err(1, "slave cmdbuf realloc to %d "
80 "bytes failed", maxlen
);
84 if (read(cmdpipe
[READ_PIPE
], cmdbuf
, len
) < 0)
85 err(1, "slave command read failed");
91 if (read(cmdpipe
[READ_PIPE
], &type
, sizeof(int)) < 0)
92 err(1, "slave arg type read failed");
94 if (read(cmdpipe
[READ_PIPE
], &len
, sizeof(int)) < 0)
95 err(1, "slave arg len read failed");
98 tmpargs
= realloc(args
,
99 (argslen
+ 1) * sizeof(char *));
101 err(1, "slave realloc of args array "
105 if (type
!= ret_null
) {
106 args
[argslen
] = malloc(len
+ 1);
108 if (args
[argslen
] == NULL
)
109 err(1, "slave alloc of %d bytes"
110 " for args failed", len
);
114 if (type
== ret_null
)
115 args
[argslen
] = NULL
;
117 args
[argslen
][0] = '\0';
119 read(cmdpipe
[READ_PIPE
], args
[argslen
],
121 if (type
!= ret_byte
)
122 args
[argslen
][len
] = '\0';
125 if (strcmp(args
[argslen
],
127 ret
= asprintf(&tmpbuf
,
132 "asprintf of stdscr failed");
134 args
[argslen
] = tmpbuf
;
144 command_execute(cmdbuf
, argslen
, args
);
147 for (i
= 0; i
< argslen
; i
++)
156 main(int argc
, char *argv
[])
161 fprintf(stderr
, "Usage: %s <cmdin> <cmdout> <slvin> slvout>\n",
165 sscanf(argv
[1], "%d", &cmdpipe
[0]);
166 sscanf(argv
[2], "%d", &cmdpipe
[1]);
167 sscanf(argv
[3], "%d", &slvpipe
[0]);
168 sscanf(argv
[4], "%d", &slvpipe
[1]);
172 err(1, "initscr failed");
174 process_commands(mainscr
);