d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tests: {read,write}_dos_attributes: despaghettify

Browse Source 
Also: actually accept all the flags in write_d_a

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
This commit is contained in:
наб 2022-03-12 04:30:22 +01:00 committed by Brian Behlendorf
parent d30577c9dd
commit caeab993ec
11 changed files with 243 additions and 379 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
configure.ac
View File

@ -226,14 +226,13 @@ AC_CONFIG_FILES([
tests/zfs-tests/cmd/randfree_file/Makefile
tests/zfs-tests/cmd/randwritecomp/Makefile
tests/zfs-tests/cmd/readmmap/Makefile
tests/zfs-tests/cmd/read_dos_attributes/Makefile
tests/zfs-tests/cmd/linux_dos_attributes/Makefile
tests/zfs-tests/cmd/rename_dir/Makefile
tests/zfs-tests/cmd/rm_lnkcnt_zero_file/Makefile
tests/zfs-tests/cmd/send_doall/Makefile
tests/zfs-tests/cmd/stride_dd/Makefile
tests/zfs-tests/cmd/threadsappend/Makefile
tests/zfs-tests/cmd/user_ns_exec/Makefile
tests/zfs-tests/cmd/write_dos_attributes/Makefile
tests/zfs-tests/cmd/xattrtest/Makefile
tests/zfs-tests/include/Makefile
tests/zfs-tests/tests/Makefile

3
tests/zfs-tests/cmd/Makefile.am
View File

@ -34,8 +34,7 @@ if BUILD_LINUX
SUBDIRS += \
getversion \
randfree_file \
read_dos_attributes \
linux_dos_attributes \
user_ns_exec \
write_dos_attributes \
xattrtest
endif

1
tests/zfs-tests/cmd/write_dos_attributes/.gitignore → tests/zfs-tests/cmd/linux_dos_attributes/.gitignore vendored
View File

@ -1 +1,2 @@
/read_dos_attributes
/write_dos_attributes

4
tests/zfs-tests/cmd/write_dos_attributes/Makefile.am → tests/zfs-tests/cmd/linux_dos_attributes/Makefile.am
View File

@ -2,5 +2,7 @@ include $(top_srcdir)/config/Rules.am
pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/bin
pkgexec_PROGRAMS = write_dos_attributes
EXTRA_DIST = dos_attributes.h
pkgexec_PROGRAMS = read_dos_attributes write_dos_attributes
read_dos_attributes_SOURCES = read_dos_attributes.c
write_dos_attributes_SOURCES = write_dos_attributes.c

82
tests/zfs-tests/cmd/linux_dos_attributes/dos_attributes.h Normal file
View File

@ -0,0 +1,82 @@
// SPDX-License-Identifier: 0BSD
#include <inttypes.h>
#define U_APPEND_SHORT "uappnd"
#define U_APPEND_FULL "uappend"
#define SU_APPEND_SHORT "sappnd"
#define SU_APPEND_FULL "sappend"
#define U_ARCH_SHORT "uarch"
#define U_ARCH_FULL "uarchive"
#define SU_ARCH_SHORT "arch"
#define SU_ARCH_FULL "archived"
#define U_HIDDEN_SHORT "hidden"
#define U_HIDDEN_FULL "uhidden"
#define SU_IMMUTABLE_FULL "simmutable"
#define SU_IMMUTABLE_SHORT "schange"
#define SU_IMMUTABLE "schg"
#define U_IMMUTABLE_FULL "uimmutable"
#define U_IMMUTABLE_SHORT "uchange"
#define U_IMMUTABLE "uchg"
#define SU_NODUMP "nodump"
#define UNSET_NODUMP "dump"
#define U_UNLINK_SHORT "uunlnk"
#define U_UNLINK_FULL "uunlink"
#define SU_UNLINK_SHORT "sunlnk"
#define SU_UNLINK_FULL "sunlink"
#define U_OFFLINE_SHORT "offline"
#define U_OFFLINE_FULL "uoffline"
#define U_RDONLY "rdonly"
#define U_RDONLY_SHORT "urdonly"
#define U_RDONLY_FULL "readonly"
#define U_REPARSE_SHORT "reparse"
#define U_REPARSE_FULL "ureparse"
#define U_SPARSE_SHORT "sparse"
#define U_SPARSE_FULL "usparse"
#define U_SYSTEM_SHORT "system"
#define U_SYSTEM_FULL "usystem"
static const uint64_t all_dos_attributes[] = {
ZFS_ARCHIVE,
ZFS_APPENDONLY,
ZFS_IMMUTABLE,
ZFS_NOUNLINK,
ZFS_NODUMP,
ZFS_HIDDEN,
ZFS_OFFLINE,
ZFS_READONLY,
ZFS_SPARSE,
ZFS_SYSTEM,
ZFS_REPARSE,
};
static const char *const all_dos_attribute_names[][7] = {
{U_ARCH_SHORT, U_ARCH_FULL, SU_ARCH_SHORT, SU_ARCH_FULL},
{U_APPEND_SHORT, U_APPEND_FULL, SU_APPEND_SHORT, SU_APPEND_FULL},
{SU_IMMUTABLE_FULL, SU_IMMUTABLE_SHORT, SU_IMMUTABLE,
U_IMMUTABLE_FULL, U_IMMUTABLE_SHORT, U_IMMUTABLE},
{U_UNLINK_SHORT, U_UNLINK_FULL, SU_UNLINK_FULL, SU_UNLINK_SHORT},
{SU_NODUMP, /* UNSET_NODUMP */},
{U_HIDDEN_SHORT, U_HIDDEN_FULL},
{U_OFFLINE_SHORT, U_OFFLINE_FULL},
{U_RDONLY, U_RDONLY_SHORT, U_RDONLY_FULL},
{U_SPARSE_SHORT, U_SPARSE_FULL},
{U_SYSTEM_SHORT, U_SYSTEM_FULL},
{U_REPARSE_SHORT, U_REPARSE_FULL},
};
_Static_assert(
ARRAY_SIZE(all_dos_attributes) == ARRAY_SIZE(all_dos_attribute_names),
"attribute list length mismatch");

60
tests/zfs-tests/cmd/linux_dos_attributes/read_dos_attributes.c Normal file
View File

@ -0,0 +1,60 @@
/*
* 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 2022 iXsystems, Inc.
*/
/*
* FreeBSD exposes additional file attributes via ls -o and chflags.
* Under Linux, we provide ZFS_IOC_[GS]ETDOSFLAGS ioctl()s.
*
* This application is the equivalent to FreeBSD ls -lo $1 | awk '{print $5}'.
*/
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/fs/zfs.h>
#include "dos_attributes.h"
int
main(int argc, const char *const *argv)
{
if (argc != 2)
errx(EXIT_FAILURE, "usage: %s file", argv[0]);
int fd = open(argv[1], O_RDONLY | O_CLOEXEC);
if (fd == -1)
err(EXIT_FAILURE, "%s", argv[1]);
uint64_t flags;
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &flags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS");
bool any = false;
for (size_t i = 0; i < ARRAY_SIZE(all_dos_attributes); ++i)
if (flags & all_dos_attributes[i]) {
if (any)
putchar(',');
(void) fputs(*all_dos_attribute_names[i], stdout);
any = true;
}
if (any)
(void) putchar('\n');
else
(void) puts("-");
}

95
tests/zfs-tests/cmd/linux_dos_attributes/write_dos_attributes.c Normal file
View File

@ -0,0 +1,95 @@
/*
* 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 2022 iXsystems, Inc.
*/
/*
* FreeBSD exposes additional file attributes via ls -o and chflags.
* Under Linux, we provide ZFS_IOC_[GS]ETDOSFLAGS ioctl()s.
*
* This application is equivalent to FreeBSD chflags.
*/
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/fs/zfs.h>
#include "dos_attributes.h"
int
main(int argc, const char *const *argv)
{
if (argc != 3)
errx(EXIT_FAILURE, "usage: %s flag file", argv[0]);
bool unset = false;
uint64_t attr = 0;
const char *flag = argv[1];
if (strcmp(flag, "0") == 0)
;
else if (strcmp(flag, SU_NODUMP) == 0)
attr = ZFS_NODUMP;
else if (strcmp(flag, UNSET_NODUMP) == 0) {
attr = ZFS_NODUMP;
unset = true;
} else {
if (strncmp(flag, "no", 2) == 0) {
unset = true;
flag += 2;
}
for (size_t i = 0; i < ARRAY_SIZE(all_dos_attribute_names); ++i)
for (const char *const *nm = all_dos_attribute_names[i];
*nm; ++nm)
if (strcmp(flag, *nm) == 0) {
attr = all_dos_attributes[i];
goto found;
}
errx(EXIT_FAILURE, "%s: unknown flag", argv[1]);
found:;
}
int fd = open(argv[2], O_RDWR | O_APPEND | O_CLOEXEC);
if (fd == -1)
err(EXIT_FAILURE, "%s", argv[2]);
uint64_t flags;
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &flags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS");
if (attr == 0)
flags = 0;
else if (unset)
flags &= ~attr;
else
flags |= attr;
if (ioctl(fd, ZFS_IOC_SETDOSFLAGS, &flags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_SETDOSFLAGS");
uint64_t newflags;
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &newflags) == -1)
err(EXIT_FAILURE, "second ZFS_IOC_GETDOSFLAGS");
if (newflags != flags)
errx(EXIT_FAILURE, "expecting %#" PRIx64 ", got %#" PRIx64
"; %ssetting %#" PRIx64 "",
flags, newflags, unset ? "un" : "", attr);
(void) printf("%#" PRIx64 "\n", flags);
}

1
tests/zfs-tests/cmd/read_dos_attributes/.gitignore vendored
View File

@ -1 +0,0 @@
/read_dos_attributes

6
tests/zfs-tests/cmd/read_dos_attributes/Makefile.am
View File

@ -1,6 +0,0 @@
include $(top_srcdir)/config/Rules.am
pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/bin
pkgexec_PROGRAMS = read_dos_attributes
read_dos_attributes_SOURCES = read_dos_attributes.c

166
tests/zfs-tests/cmd/read_dos_attributes/read_dos_attributes.c
View File

@ -1,166 +0,0 @@
/*
* 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 2022 iXsystems, Inc.
*/
/*
* FreeBSD allows to update and retreive additional file level attributes.
* For Linux, two IOCTLs have been added to update and retrieve additional
* level attributes.
*
* This application reads additional file level attributes on a given
* file and prints FreeBSD keywords that map to respective attributes.
*
* Usage: 'read_dos_attributes filepath'
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <err.h>
#include <sys/fs/zfs.h>
#include <string.h>
#define SU_ARCH_SHORT "arch"
#define SU_ARCH_FULL "archived"
#define SU_NODUMP "nodump"
#define SU_APPEND_SHORT "sappnd"
#define SU_APPEND_FULL "sappend"
#define SU_IMMUTABLE "schg"
#define SU_IMMUTABLE_SHORT "schange"
#define SU_IMMUTABLE_FULL "simmutable"
#define SU_UNLINK_SHORT "sunlnk"
#define SU_UNLINK_FULL "sunlink"
#define U_APPEND_SHORT "uappnd"
#define U_APPEND_FULL "uappend"
#define U_ARCH_SHORT "uarch"
#define U_ARCH_FULL "uarchive"
#define U_IMMUTABLE "uchg"
#define U_IMMUTABLE_SHORT "uchange"
#define U_IMMUTABLE_FULL "uimmutable"
#define U_HIDDEN_SHORT "hidden"
#define U_HIDDEN_FULL "uhidden"
#define U_OFFLINE_SHORT "offline"
#define U_OFFLINE_FULL "uoffline"
#define U_RDONLY "rdonly"
#define U_RDONLY_SHORT "urdonly"
#define U_RDONLY_FULL "readonly"
#define U_SPARSE_SHORT "sparse"
#define U_SPARSE_FULL "usparse"
#define U_SYSTEM_SHORT "system"
#define U_SYSTEM_FULL "usystem"
#define U_REPARSE_SHORT "reparse"
#define U_REPARSE_FULL "ureparse"
#define U_UNLINK_SHORT "uunlnk"
#define U_UNLINK_FULL "uunlink"
#define UNSET_NODUMP "dump"
#define NO_ATTRIBUTE "-"
#define SEPARATOR ","
#define BUFFER_SIZE 0x200
void attribute_to_str(uint64_t attributes, char *buff);
void
attribute_to_str(uint64_t attributes, char *buff)
{
if (attributes & ZFS_ARCHIVE) {
strcat(buff, U_ARCH_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_APPENDONLY) {
strcat(buff, U_APPEND_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_IMMUTABLE) {
strcat(buff, U_IMMUTABLE_FULL);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_NOUNLINK) {
strcat(buff, U_UNLINK_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_NODUMP) {
strcat(buff, SU_NODUMP);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_HIDDEN) {
strcat(buff, U_HIDDEN_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_OFFLINE) {
strcat(buff, U_OFFLINE_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_READONLY) {
strcat(buff, U_RDONLY);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_SPARSE) {
strcat(buff, U_SPARSE_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_SYSTEM) {
strcat(buff, U_SYSTEM_SHORT);
strcat(buff, SEPARATOR);
}
if (attributes & ZFS_REPARSE) {
strcat(buff, U_REPARSE_SHORT);
strcat(buff, SEPARATOR);
}
if (buff[0] == '\0')
strcat(buff, NO_ATTRIBUTE);
else
buff[strlen(buff) - 1] = '\0';
}
int
main(int argc, const char * const argv[])
{
if (argc != 2)
errx(EXIT_FAILURE, "Usage: %s filepath", argv[0]);
int fd = open(argv[1], O_RDWR | O_APPEND);
if (fd < 0)
err(EXIT_FAILURE, "Failed to open %s", argv[1]);
uint64_t dosflags = 0;
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &dosflags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS failed");
(void) close(fd);
char buffer[BUFFER_SIZE] = "";
(void) attribute_to_str(dosflags, buffer);
(void) puts(buffer);
return (EXIT_SUCCESS);
}

201
tests/zfs-tests/cmd/write_dos_attributes/write_dos_attributes.c
View File

@ -1,201 +0,0 @@
/*
* 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 2022 iXsystems, Inc.
*/
/*
* FreeBSD allows to update and retreive additional file level attributes.
* For Linux, two IOCTLs have been added to update and retrieve additional
* level attributes.
*
* This application updates additional file level attributes on a given
* file. FreeBSD keywords can be used to specify the flag.
*
* Usage: 'write_dos_attributes flag filepath'
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <err.h>
#include <sys/fs/zfs.h>
#include <string.h>
#include <ctype.h>
#define SU_ARCH_SHORT "arch"
#define SU_ARCH_FULL "archived"
#define SU_NODUMP "nodump"
#define SU_APPEND_SHORT "sappnd"
#define SU_APPEND_FULL "sappend"
#define SU_IMMUTABLE "schg"
#define SU_IMMUTABLE_SHORT "schange"
#define SU_IMMUTABLE_FULL "simmutable"
#define SU_UNLINK_SHORT "sunlnk"
#define SU_UNLINK_FULL "sunlink"
#define U_APPEND_SHORT "uappnd"
#define U_APPEND_FULL "uappend"
#define U_ARCH_SHORT "uarch"
#define U_ARCH_FULL "uarchive"
#define U_IMMUTABLE "uchg"
#define U_IMMUTABLE_SHORT "uchange"
#define U_IMMUTABLE_FULL "uimmutable"
#define U_HIDDEN_SHORT "hidden"
#define U_HIDDEN_FULL "uhidden"
#define U_OFFLINE_SHORT "offline"
#define U_OFFLINE_FULL "uoffline"
#define U_RDONLY "rdonly"
#define U_RDONLY_SHORT "urdonly"
#define U_RDONLY_FULL "readonly"
#define U_SPARSE_SHORT "sparse"
#define U_SPARSE_FULL "usparse"
#define U_SYSTEM_SHORT "system"
#define U_SYSTEM_FULL "usystem"
#define U_REPARSE_SHORT "reparse"
#define U_REPARSE_FULL "ureparse"
#define U_UNLINK_SHORT "uunlnk"
#define U_UNLINK_FULL "uunlink"
#define UNSET_NODUMP "dump"
#define IS_NO(s) (s[0] == 'n' && s[1] == 'o')
uint64_t str_to_attribute(char *str);
uint64_t
str_to_attribute(char *str)
{
if ((strcmp(str, SU_ARCH_SHORT) == 0) ||
(strcmp(str, SU_ARCH_FULL) == 0) ||
(strcmp(str, U_ARCH_SHORT) == 0) ||
(strcmp(str, U_ARCH_FULL) == 0))
return (ZFS_ARCHIVE);
else if ((strcmp(str, SU_APPEND_SHORT) == 0) ||
(strcmp(str, SU_APPEND_FULL) == 0) ||
(strcmp(str, U_APPEND_SHORT) == 0) ||
(strcmp(str, U_APPEND_FULL) == 0))
return (ZFS_APPENDONLY);
else if ((strcmp(str, SU_IMMUTABLE) == 0) ||
(strcmp(str, SU_IMMUTABLE_SHORT) == 0) ||
(strcmp(str, SU_IMMUTABLE_FULL) == 0))
return (ZFS_IMMUTABLE);
else if ((strcmp(str, SU_UNLINK_SHORT) == 0) ||
(strcmp(str, SU_UNLINK_FULL) == 0) ||
(strcmp(str, U_UNLINK_SHORT) == 0) ||
(strcmp(str, SU_UNLINK_FULL) == 0))
return (ZFS_NOUNLINK);
else if ((strcmp(str, U_HIDDEN_SHORT) == 0) ||
(strcmp(str, U_HIDDEN_FULL) == 0))
return (ZFS_HIDDEN);
else if ((strcmp(str, U_OFFLINE_SHORT) == 0) ||
(strcmp(str, U_OFFLINE_FULL) == 0))
return (ZFS_OFFLINE);
else if ((strcmp(str, U_RDONLY) == 0) ||
(strcmp(str, U_RDONLY_SHORT) == 0) ||
(strcmp(str, U_RDONLY_FULL) == 0))
return (ZFS_READONLY);
else if ((strcmp(str, U_SPARSE_SHORT) == 0) ||
(strcmp(str, U_SPARSE_FULL) == 0))
return (ZFS_SPARSE);
else if ((strcmp(str, U_SYSTEM_SHORT) == 0) ||
(strcmp(str, U_SYSTEM_FULL) == 0))
return (ZFS_SYSTEM);
else if ((strcmp(str, U_REPARSE_SHORT) == 0) ||
(strcmp(str, U_REPARSE_FULL) == 0))
return (ZFS_REPARSE);
return (-1);
}
int
main(int argc, const char * const argv[])
{
if (argc != 3)
errx(EXIT_FAILURE, "Usage: %s flag filepath", argv[0]);
uint8_t unset, unset_all;
uint64_t attribute, dosflags;
char *flag = strdup(argv[1]);
unset = unset_all = 0;
attribute = dosflags = 0;
// convert the flag to lower case
for (int i = 0; i < strlen(argv[1]); ++i)
flag[i] = tolower((unsigned char) flag[i]);
// check if flag starts with 'no'
if (IS_NO(flag)) {
if (strcmp(flag, SU_NODUMP) == 0) {
attribute = ZFS_NODUMP;
} else {
attribute = str_to_attribute(flag + 2);
unset = 1;
}
}
// check if '0' was passed
else if (strcmp(flag, "0") == 0) {
unset_all = 1;
}
// check if the flag is 'dump'
else if (strcmp(flag, UNSET_NODUMP) == 0) {
attribute = ZFS_NODUMP;
unset = 1;
} else {
attribute = str_to_attribute(flag);
}
if (attribute == -1)
errx(EXIT_FAILURE, "Invalid Flag %s", argv[1]);
int fd = open(argv[2], O_RDWR | O_APPEND);
if (fd < 0)
err(EXIT_FAILURE, "Failed to open %s", argv[2]);
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &dosflags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS failed");
if (unset == 0 && attribute != 0)
attribute |= dosflags;
else if (unset == 1 && attribute != 0)
attribute = dosflags & (~attribute);
else if (unset_all == 1)
attribute = 0;
// set the attribute/s
if (ioctl(fd, ZFS_IOC_SETDOSFLAGS, &attribute) == -1)
err(EXIT_FAILURE, "ZFS_IOC_SETDOSFLAGS failed");
// get the attributes to confirm
dosflags = -1;
if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &dosflags) == -1)
err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS failed");
(void) close(fd);
if (dosflags != attribute)
errx(EXIT_FAILURE, "Could not set %s attribute", argv[1]);
(void) printf("New Dos Flags: 0x%llx\n", (u_longlong_t)dosflags);
return (EXIT_SUCCESS);
}