tests/zfs-tests/cmd/linux_dos_attributes/read_dos_attributes.c

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright 2022 iXsystems, Inc.
  14  */
  15
  16 /*
  17  * FreeBSD exposes additional file attributes via ls -o and chflags.
  18  * Under Linux, we provide ZFS_IOC_[GS]ETDOSFLAGS ioctl()s.
  19  *
  20  * This application is the equivalent to FreeBSD ls -lo $1 | awk '{print $5}'.
  21  */
  22
  23 #include <err.h>
  24 #include <fcntl.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <stdbool.h>
  28 #include <sys/stat.h>
  29 #include <sys/types.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/fs/zfs.h>
  32 #include "dos_attributes.h"
  33
  34 int
  35 main(int argc, const char *const *argv)
  36 {
  37         if (argc != 2)
  38                 errx(EXIT_FAILURE, "usage: %s file", argv[0]);
  39
  40         int fd = open(argv[1], O_RDONLY | O_CLOEXEC);
  41         if (fd == -1)
  42                 err(EXIT_FAILURE, "%s", argv[1]);
  43
  44         uint64_t flags;
  45         if (ioctl(fd, ZFS_IOC_GETDOSFLAGS, &flags) == -1)
  46                 err(EXIT_FAILURE, "ZFS_IOC_GETDOSFLAGS");
  47
  48         bool any = false;
  49         for (size_t i = 0; i < ARRAY_SIZE(all_dos_attributes); ++i)
  50                 if (flags & all_dos_attributes[i]) {
  51                         if (any)
  52                                 putchar(',');
  53                         (void) fputs(*all_dos_attribute_names[i], stdout);
  54                         any = true;
  55                 }
  56         if (any)
  57                 (void) putchar('\n');
  58         else
  59                 (void) puts("-");
  60 }