/* filemode.c -- make a string describing file modes

   Copyright (C) 1985-2023 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3, or (at your option)

   any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA

   02110-1301, USA.  */

#include "sysdep.h"

#include "bfd.h"

#include "bucomm.h"

static char ftypelet (unsigned long);

static void setst (unsigned long, char *);

/* filemodestring - fill in string STR with an ls-style ASCII

   representation of the st_mode field of file stats block STATP.

   10 characters are stored in STR; no terminating null is added.

   The characters stored in STR are:

   0  File type.  'd' for directory, 'c' for character

  special, 'b' for block special, 'm' for multiplex,

  'l' for symbolic link, 's' for socket, 'p' for fifo,

  '-' for any other file type

   1  'r' if the owner may read, '-' otherwise.

   2  'w' if the owner may write, '-' otherwise.

   3  'x' if the owner may execute, 's' if the file is

  set-user-id, '-' otherwise.

  'S' if the file is set-user-id, but the execute

  bit isn't set.

   4  'r' if group members may read, '-' otherwise.

   5  'w' if group members may write, '-' otherwise.

   6  'x' if group members may execute, 's' if the file is

  set-group-id, '-' otherwise.

  'S' if it is set-group-id but not executable.

   7  'r' if any user may read, '-' otherwise.

   8  'w' if any user may write, '-' otherwise.

   9  'x' if any user may execute, 't' if the file is "sticky"

  (will be retained in swap space after execution), '-'

  otherwise.

  'T' if the file is sticky but not executable.  */

/* Get definitions for the file permission bits.  */

#ifndef S_IRWXU

#define S_IRWXU 0700

#endif

#ifndef S_IRUSR

#define S_IRUSR 0400

#endif

#ifndef S_IWUSR

#define S_IWUSR 0200

#endif

#ifndef S_IXUSR

#define S_IXUSR 0100

#endif

#ifndef S_IRWXG

#define S_IRWXG 0070

#endif

#ifndef S_IRGRP

#define S_IRGRP 0040

#endif

#ifndef S_IWGRP

#define S_IWGRP 0020

#endif

#ifndef S_IXGRP

#define S_IXGRP 0010

#endif

#ifndef S_IRWXO

#define S_IRWXO 0007

#endif

#ifndef S_IROTH

#define S_IROTH 0004

#endif

#ifndef S_IWOTH

#define S_IWOTH 0002

#endif

#ifndef S_IXOTH

#define S_IXOTH 0001

#endif

/* Like filemodestring, but only the relevant part of the `struct stat'

   is given as an argument.  */

void

mode_string (unsigned long mode, char *str)

{

  str[0] = ftypelet ((unsigned long) mode);

  str[1] = (mode & S_IRUSR) != 0 ? 'r' : '-';

  str[2] = (mode & S_IWUSR) != 0 ? 'w' : '-';

  str[3] = (mode & S_IXUSR) != 0 ? 'x' : '-';

  str[4] = (mode & S_IRGRP) != 0 ? 'r' : '-';

  str[5] = (mode & S_IWGRP) != 0 ? 'w' : '-';

  str[6] = (mode & S_IXGRP) != 0 ? 'x' : '-';

  str[7] = (mode & S_IROTH) != 0 ? 'r' : '-';

  str[8] = (mode & S_IWOTH) != 0 ? 'w' : '-';

  str[9] = (mode & S_IXOTH) != 0 ? 'x' : '-';

  setst ((unsigned long) mode, str);

}

/* Return a character indicating the type of file described by

   file mode BITS:

   'd' for directories

   'b' for block special files

   'c' for character special files

   'm' for multiplexer files

   'l' for symbolic links

   's' for sockets

   'p' for fifos

   '-' for any other file type.  */

#ifndef S_ISDIR

#ifdef S_IFDIR

#define S_ISDIR(i) (((i) & S_IFMT) == S_IFDIR)

#else /* ! defined (S_IFDIR) */

#define S_ISDIR(i) (((i) & 0170000) == 040000)

#endif /* ! defined (S_IFDIR) */

#endif /* ! defined (S_ISDIR) */

#ifndef S_ISBLK

#ifdef S_IFBLK

#define S_ISBLK(i) (((i) & S_IFMT) == S_IFBLK)

#else /* ! defined (S_IFBLK) */

#define S_ISBLK(i) 0

#endif /* ! defined (S_IFBLK) */

#endif /* ! defined (S_ISBLK) */

#ifndef S_ISCHR

#ifdef S_IFCHR

#define S_ISCHR(i) (((i) & S_IFMT) == S_IFCHR)

#else /* ! defined (S_IFCHR) */

#define S_ISCHR(i) 0

#endif /* ! defined (S_IFCHR) */

#endif /* ! defined (S_ISCHR) */

#ifndef S_ISFIFO

#ifdef S_IFIFO

#define S_ISFIFO(i) (((i) & S_IFMT) == S_IFIFO)

#else /* ! defined (S_IFIFO) */

#define S_ISFIFO(i) 0

#endif /* ! defined (S_IFIFO) */

#endif /* ! defined (S_ISFIFO) */

#ifndef S_ISSOCK

#ifdef S_IFSOCK

#define S_ISSOCK(i) (((i) & S_IFMT) == S_IFSOCK)

#else /* ! defined (S_IFSOCK) */

#define S_ISSOCK(i) 0

#endif /* ! defined (S_IFSOCK) */

#endif /* ! defined (S_ISSOCK) */

#ifndef S_ISLNK

#ifdef S_IFLNK

#define S_ISLNK(i) (((i) & S_IFMT) == S_IFLNK)

#else /* ! defined (S_IFLNK) */

#define S_ISLNK(i) 0

#endif /* ! defined (S_IFLNK) */

#endif /* ! defined (S_ISLNK) */

static char

ftypelet (unsigned long bits)

{

  if (S_ISDIR (bits))

    return 'd';

  if (S_ISLNK (bits))

    return 'l';

  if (S_ISBLK (bits))

    return 'b';

  if (S_ISCHR (bits))

    return 'c';

  if (S_ISSOCK (bits))

    return 's';

  if (S_ISFIFO (bits))

    return 'p';

#ifdef S_IFMT

#ifdef S_IFMPC

  if ((bits & S_IFMT) == S_IFMPC

      || (bits & S_IFMT) == S_IFMPB)

    return 'm';

#endif

#ifdef S_IFNWK

  if ((bits & S_IFMT) == S_IFNWK)

    return 'n';

#endif

#endif

  return '-';

}

/* Set the 's' and 't' flags in file attributes string CHARS,

   according to the file mode BITS.  */

static void

setst (unsigned long bits ATTRIBUTE_UNUSED, char *chars ATTRIBUTE_UNUSED)

{

#ifdef S_ISUID

  if (bits & S_ISUID)

    {

      if (chars[3] != 'x')

  /* Set-uid, but not executable by owner.  */

  chars[3] = 'S';

      else

  chars[3] = 's';

    }

#endif

#ifdef S_ISGID

  if (bits & S_ISGID)

    {

      if (chars[6] != 'x')

  /* Set-gid, but not executable by group.  */

  chars[6] = 'S';

      else

  chars[6] = 's';

    }

#endif

#ifdef S_ISVTX

  if (bits & S_ISVTX)

    {

      if (chars[9] != 'x')

  /* Sticky, but not executable by others.  */

  chars[9] = 'T';

      else

  chars[9] = 't';

    }

#endif

}