Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Copyright © 2020 Alexey Gladkov <gladkov.alexey@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Permission to use, copy, modify, and distribute this software for any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * purpose with or without fee is hereby granted, provided that the above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * copyright notice and this permission notice appear in all copies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <assert.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <sys/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int main(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	struct stat proc_st1, proc_st2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	char procbuff[] = "/tmp/proc.XXXXXX/meminfo";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	char procdir1[] = "/tmp/proc.XXXXXX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	char procdir2[] = "/tmp/proc.XXXXXX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	assert(mkdtemp(procdir1) != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	assert(mkdtemp(procdir2) != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	assert(!mount("proc", procdir1, "proc", 0, "hidepid=1"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	assert(!mount("proc", procdir2, "proc", 0, "hidepid=2"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	snprintf(procbuff, sizeof(procbuff), "%s/meminfo", procdir1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	assert(!stat(procbuff, &proc_st1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	snprintf(procbuff, sizeof(procbuff), "%s/meminfo", procdir2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	assert(!stat(procbuff, &proc_st2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	umount(procdir1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	umount(procdir2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	assert(proc_st1.st_dev != proc_st2.st_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }