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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2017, Joyent, Inc.
*/
/*
* Regression test for OS-6097.
*/
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <libdlpi.h>
#include <sys/debug.h>
int
main(void)
{
int ret;
char path[4096];
uint_t num = 4294967294U;
dlpi_handle_t dh;
/*
* First, we need to determine a path that doesn't exist to trigger this
* bug. We start with the highest possible number and just decrement
* until we find something.
*/
while (num > 0) {
struct stat st;
(void) snprintf(path, sizeof (path), "/dev/net/net%u", num);
ret = stat(path, &st);
if (ret == -1 && errno == ENOENT)
break;
if (ret == -1) {
(void) fprintf(stderr, "test failed: unexpected error "
"running stat(2) on %s: %s\n", path,
strerror(errno));
return (1);
}
num--;
}
/*
* While technically this is a valid entry that we could try, at this
* point we've exhausted so many NICs, there's likely a bug.
*/
if (num == 0) {
(void) fprintf(stderr, "failed to construct a non-existent "
"NIC with a name starting with 'net'\n");
return (1);
}
(void) snprintf(path, sizeof (path), "net%u", num);
ret = dlpi_open(path, &dh, 0);
VERIFY3U(ret, ==, DLPI_ENOLINK);
return (0);
}
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