1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
#!/usr/bin/env bash
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# Generate Go code listing errors and other #defined constant
# values (ENAMETOOLONG etc.), by asking the preprocessor
# about the definitions.
unset LANG
export LC_ALL=C
export LC_CTYPE=C
GCC=gcc
uname=$(uname)
includes_Linux='
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _FILE_OFFSET_BITS 64
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/epoll.h>
#include <sys/inotify.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <linux/ptrace.h>
#include <linux/wait.h>
#include <linux/if_tun.h>
#include <net/if.h>
#include <netpacket/packet.h>
'
includes_Darwin='
#define _DARWIN_C_SOURCE
#define KERNEL
#define _DARWIN_USE_64_BIT_INODE
#include <sys/types.h>
#include <sys/event.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_mroute.h>
'
includes_FreeBSD='
#include <sys/types.h>
#include <sys/event.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_mroute.h>
'
includes='
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <errno.h>
#include <sys/signal.h>
#include <signal.h>
'
ccflags=""
next=false
for i
do
if $next; then
ccflags="$ccflags $i"
next=false
elif [ "$i" = "-f" ]; then
next=true
fi
done
# Write godefs input.
(
indirect="includes_$(uname)"
echo "${!indirect} $includes"
echo
echo 'enum {'
# The gcc command line prints all the #defines
# it encounters while processing the input
echo "${!indirect} $includes" | $GCC -x c - -E -dM $ccflags |
awk '
$1 != "#define" || $2 ~ /\(/ {next}
$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
$2 ~ /^(SCM_SRCRT)$/ {next}
$2 ~ /^(MAP_FAILED)$/ {next}
$2 !~ /^ETH_/ &&
$2 !~ /^EPROC_/ &&
$2 !~ /^EQUIV_/ &&
$2 !~ /^EXPR_/ &&
$2 ~ /^E[A-Z0-9_]+$/ ||
$2 ~ /^SIG[^_]/ ||
$2 ~ /^IN_/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|IFF|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
$2 == "SOMAXCONN" ||
$2 == "NAME_MAX" ||
$2 == "IFNAMSIZ" ||
$2 == "CTL_NET" ||
$2 == "CTL_MAXNAME" ||
$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
$2 ~ /^(O|F|FD|NAME|S|PTRACE)_/ ||
$2 ~ /^SIOC/ ||
$2 !~ "WMESGLEN" &&
$2 ~ /^W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", $2, $2)}
$2 ~ /^__WCOREFLAG$/ {next}
$2 ~ /^__W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", substr($2,3), $2)}
{next}
' | sort
echo '};'
) >_const.c
# Pull out just the error names for later.
errors=$(
echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags |
awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
sort
)
echo '// mkerrors.sh' "$@"
echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT'
echo
godefs -c $GCC "$@" -gsyscall "$@" _const.c
# Run C program to print error strings.
(
/bin/echo "
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
int errors[] = {
"
for i in $errors
do
/bin/echo ' '$i,
done
# Use /bin/echo to avoid builtin echo,
# which interprets \n itself
/bin/echo '
};
static int
intcmp(const void *a, const void *b)
{
return *(int*)a - *(int*)b;
}
int
main(void)
{
int i, j, e;
char buf[1024];
printf("\n\n// Error table\n");
printf("var errors = [...]string {\n");
qsort(errors, nelem(errors), sizeof errors[0], intcmp);
for(i=0; i<nelem(errors); i++) {
e = errors[i];
if(i > 0 && errors[i-1] == e)
continue;
strcpy(buf, strerror(e));
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
buf[0] += a - A;
printf("\t%d: \"%s\",\n", e, buf);
}
printf("}\n\n");
return 0;
}
'
) >_errors.c
$GCC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.c
|
