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| 1 | +/*********************************************************** |
| 2 | +Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
| 3 | +Netherlands. |
| 4 | +
|
| 5 | + All Rights Reserved |
| 6 | +
|
| 7 | +Permission to use, copy, modify, and distribute this software and its |
| 8 | +documentation for any purpose and without fee is hereby granted, |
| 9 | +provided that the above copyright notice appear in all copies and that |
| 10 | +both that copyright notice and this permission notice appear in |
| 11 | +supporting documentation, and that the names of Stichting Mathematisch |
| 12 | +Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | +distribution of the software without specific, written prior permission. |
| 14 | +
|
| 15 | +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | +
|
| 23 | +******************************************************************/ |
| 24 | + |
| 25 | +/* fcntl module */ |
| 26 | + |
| 27 | +#include "allobjects.h" |
| 28 | +#include "modsupport.h" |
| 29 | + |
| 30 | + |
| 31 | +/* fcntl(fd, opt, [arg]) */ |
| 32 | + |
| 33 | +static object * |
| 34 | +fcntl_fcntl(self, args) |
| 35 | + object *self; /* Not used */ |
| 36 | + object *args; |
| 37 | +{ |
| 38 | + int fd; |
| 39 | + int code; |
| 40 | + int arg; |
| 41 | + int ret; |
| 42 | + char *str; |
| 43 | + int len; |
| 44 | + char buf[1024]; |
| 45 | + |
| 46 | + if (getargs(args, "(iis#)", &fd, &code, &str, &len)) { |
| 47 | + if (len > sizeof buf) { |
| 48 | + err_setstr(ValueError, "fcntl string arg too long"); |
| 49 | + return NULL; |
| 50 | + } |
| 51 | + memcpy(buf, str, len); |
| 52 | + if (fcntl(fd, code, buf) < 0) { |
| 53 | + err_errno(IOError); |
| 54 | + return NULL; |
| 55 | + } |
| 56 | + return newsizedstringobject(buf, len); |
| 57 | + } |
| 58 | + |
| 59 | + err_clear(); |
| 60 | + if (getargs(args, "(ii)", &fd, &code)) |
| 61 | + arg = 0; |
| 62 | + else { |
| 63 | + err_clear(); |
| 64 | + if (!getargs(args, "(iii)", &fd, &code, &arg)) |
| 65 | + return NULL; |
| 66 | + } |
| 67 | + ret = fcntl(fd, code, arg); |
| 68 | + if (ret < 0) { |
| 69 | + err_errno(IOError); |
| 70 | + return NULL; |
| 71 | + } |
| 72 | + return newintobject((long)ret); |
| 73 | +} |
| 74 | + |
| 75 | + |
| 76 | +/* ioctl(fd, opt, [arg]) */ |
| 77 | + |
| 78 | +static object * |
| 79 | +fcntl_ioctl(self, args) |
| 80 | + object *self; /* Not used */ |
| 81 | + object *args; |
| 82 | +{ |
| 83 | + int fd; |
| 84 | + int code; |
| 85 | + int arg; |
| 86 | + int ret; |
| 87 | + char *str; |
| 88 | + int len; |
| 89 | + char buf[1024]; |
| 90 | + |
| 91 | + if (getargs(args, "(iis#)", &fd, &code, &str, &len)) { |
| 92 | + if (len > sizeof buf) { |
| 93 | + err_setstr(ValueError, "ioctl string arg too long"); |
| 94 | + return NULL; |
| 95 | + } |
| 96 | + memcpy(buf, str, len); |
| 97 | + if (ioctl(fd, code, buf) < 0) { |
| 98 | + err_errno(IOError); |
| 99 | + return NULL; |
| 100 | + } |
| 101 | + return newsizedstringobject(buf, len); |
| 102 | + } |
| 103 | + |
| 104 | + err_clear(); |
| 105 | + if (getargs(args, "(ii)", &fd, &code)) |
| 106 | + arg = 0; |
| 107 | + else { |
| 108 | + err_clear(); |
| 109 | + if (!getargs(args, "(iii)", &fd, &code, &arg)) |
| 110 | + return NULL; |
| 111 | + } |
| 112 | + ret = ioctl(fd, code, arg); |
| 113 | + if (ret < 0) { |
| 114 | + err_errno(IOError); |
| 115 | + return NULL; |
| 116 | + } |
| 117 | + return newintobject((long)ret); |
| 118 | +} |
| 119 | + |
| 120 | + |
| 121 | +/* List of functions */ |
| 122 | + |
| 123 | +static struct methodlist fcntl_methods[] = { |
| 124 | + {"fcntl", fcntl_fcntl}, |
| 125 | + {"ioctl", fcntl_ioctl}, |
| 126 | + {NULL, NULL} /* sentinel */ |
| 127 | +}; |
| 128 | + |
| 129 | + |
| 130 | +/* Module initialisation */ |
| 131 | + |
| 132 | +void |
| 133 | +initfcntl() |
| 134 | +{ |
| 135 | + object *m, *d; |
| 136 | + |
| 137 | + /* Create the module and add the functions */ |
| 138 | + m = initmodule("fcntl", fcntl_methods); |
| 139 | + |
| 140 | + /* Add some symbolic constants to the module */ |
| 141 | + d = getmoduledict(m); |
| 142 | + |
| 143 | + /* Check for errors */ |
| 144 | + if (err_occurred()) |
| 145 | + fatal("can't initialize module fcntl"); |
| 146 | +} |
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