249 lines
6.0 KiB
C
249 lines
6.0 KiB
C
/* filemode.c -- make a string describing file modes
|
||
Copyright 1985, 1990, 1991, 1994, 1995, 1997, 1999, 2002, 2003, 2005
|
||
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 2, 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 "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
|
||
}
|