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20093de25c
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: John Kennedy <john.kennedy@delphix.com> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #13259
73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2021 iXsystems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Test for correct behavior of DOS mode READONLY flag on a file.
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* We should be able to open a file RW, set READONLY, and still write to the fd.
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*/
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef __linux__
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#include <stdint.h>
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#include <sys/fs/zfs.h>
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#endif
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int
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main(int argc, const char *argv[])
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{
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const char *buf = "We should be allowed to write this to the fd.\n";
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const char *path;
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int fd;
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if (argc != 2) {
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fprintf(stderr, "usage: %s PATH\n", argv[0]);
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return (EXIT_FAILURE);
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}
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path = argv[1];
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fd = open(path, O_CREAT|O_RDWR, 0777);
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if (fd == -1)
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err(EXIT_FAILURE, "%s: open failed", path);
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#ifdef __linux__
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uint64_t dosflags = ZFS_READONLY;
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if (ioctl(fd, ZFS_IOC_SETDOSFLAGS, &dosflags) == -1)
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err(EXIT_FAILURE, "%s: ZFS_IOC_SETDOSFLAGS failed", path);
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#else
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if (chflags(path, UF_READONLY) == -1)
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err(EXIT_FAILURE, "%s: chflags failed", path);
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#endif
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if (write(fd, buf, strlen(buf)) == -1)
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err(EXIT_FAILURE, "%s: write failed", path);
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if (close(fd) == -1)
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err(EXIT_FAILURE, "%s: close failed", path);
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return (EXIT_SUCCESS);
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}
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