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
|
/* See LICENSE file for copyright and license details. */
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-ai] [file ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
int *fds = NULL;
size_t i, nfds;
ssize_t n;
int ret = 0, aflag = O_TRUNC, iflag = 0;
char buf[BUFSIZ];
ARGBEGIN {
case 'a':
aflag = O_APPEND;
break;
case 'i':
iflag = 1;
break;
default:
usage();
} ARGEND
if (iflag && signal(SIGINT, SIG_IGN) == SIG_ERR)
eprintf("signal:");
nfds = argc + 1;
fds = ecalloc(nfds, sizeof(*fds));
for (i = 0; i < argc; i++) {
if ((fds[i] = open(argv[i], O_WRONLY|O_CREAT|aflag, 0666)) < 0) {
weprintf("open %s:", argv[i]);
ret = 1;
}
}
fds[i] = 1;
while ((n = read(0, buf, sizeof(buf))) > 0) {
for (i = 0; i < nfds; i++) {
if (fds[i] >= 0 && writeall(fds[i], buf, n) < 0) {
weprintf("write %s:", (i != argc) ? argv[i] : "<stdout>");
fds[i] = -1;
ret = 1;
}
}
}
if (n < 0)
eprintf("read <stdin>:");
return ret;
}
|
