lib/e2p/getflags.c

   1 /*
   2  * getflags.c           - Get a file flags on an ext2 file system
   3  *
   4  * Copyright (C) 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                           Laboratoire MASI, Institut Blaise Pascal
   6  *                           Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * This file can be redistributed under the terms of the GNU Library General
   9  * Public License
  10  */
  11
  12 /*
  13  * History:
  14  * 93/10/30     - Creation
  15  */
  16
  17 #if HAVE_ERRNO_H
  18 #include <errno.h>
  19 #endif
  20 #if HAVE_STAT_FLAGS
  21 #include <sys/stat.h>
  22 #else
  23 #include <sys/ioctl.h>
  24 #endif
  25
  26 #include "e2p.h"
  27
  28 int getflags (int fd, unsigned long * flags)
  29 {
  30 #if HAVE_STAT_FLAGS
  31         struct stat buf;
  32
  33         if (fstat (fd, &buf) == -1)
  34                 return -1;
  35
  36         *flags = 0;
  37 #ifdef UF_IMMUTABLE
  38         if (buf.st_flags & UF_IMMUTABLE)
  39                 *flags |= EXT2_IMMUTABLE_FL;
  40 #endif
  41 #ifdef UF_APPEND
  42         if (buf.st_flags & UF_APPEND)
  43                 *flags |= EXT2_APPEND_FL;
  44 #endif
  45 #ifdef UF_NODUMP
  46         if (buf.st_flags & UF_NODUMP)
  47                 *flags |= EXT2_NODUMP_FL;
  48 #endif
  49
  50         return 0;
  51 #else
  52 #if HAVE_EXT2_IOCTLS
  53         int r, f;
  54
  55         r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
  56         *flags = f;
  57         return r;
  58 #else /* ! HAVE_EXT2_IOCTLS */
  59         extern int errno;
  60         errno = EOPNOTSUPP;
  61         return -1;
  62 #endif /* ! HAVE_EXT2_IOCTLS */
  63 #endif
  64 }