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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2004 Silicon Graphics, Inc.
* All Rights Reserved.
*/
/*
* tests out if access checking is done on write path
* 1. opens with write perms
* 2. fchmod to turn off write perms
* 3. writes to file
*/
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
int
main(int argc, char* argv[])
{
char *path;
int fd;
char *buf = "hi there\n";
ssize_t x;
int sts;
if (argc != 2) {
fprintf(stderr, "%s: requires path argument\n", argv[0]);
return 1;
}
path = argv[1];
printf("open for write \"%s\" with 777\n", path);
fd = open(path, O_RDWR, 0777);
if (fd == -1) {
perror("open");
return 1;
}
printf("remove perms on file\n");
sts = fchmod(fd, 0);
if (sts == -1) {
perror("fchmod");
return 1;
}
printf("write to the file\n");
x = write(fd, buf, strlen(buf));
if (x == -1) {
perror("write");
return 1;
}
return 0;
}
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