/usr/share/doc/libfuse-dev/examples/fselclient.c is in libfuse-dev 2.9.4-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
FUSE fselclient: FUSE select example client
Copyright (C) 2008 SUSE Linux Products GmbH
Copyright (C) 2008 Tejun Heo <teheo@suse.de>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
gcc -Wall fselclient.c -o fselclient
*/
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#define FSEL_FILES 16
int main(void)
{
static const char hex_map[FSEL_FILES] = "0123456789ABCDEF";
int fds[FSEL_FILES];
int i, nfds;
for (i = 0; i < FSEL_FILES; i++) {
char name[] = { hex_map[i], '\0' };
fds[i] = open(name, O_RDONLY);
if (fds[i] < 0) {
perror("open");
return 1;
}
}
nfds = fds[FSEL_FILES - 1] + 1;
while (1) {
static char buf[4096];
fd_set rfds;
int rc;
FD_ZERO(&rfds);
for (i = 0; i < FSEL_FILES; i++)
FD_SET(fds[i], &rfds);
rc = select(nfds, &rfds, NULL, NULL, NULL);
if (rc < 0) {
perror("select");
return 1;
}
for (i = 0; i < FSEL_FILES; i++) {
if (!FD_ISSET(fds[i], &rfds)) {
printf("_: ");
continue;
}
printf("%X:", i);
rc = read(fds[i], buf, sizeof(buf));
if (rc < 0) {
perror("read");
return 1;
}
printf("%02d ", rc);
}
printf("\n");
}
}
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