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/* filemode.c -- make a string describing file modes
Copyright (C) 1985, 1990, 1993, 1998-2000, 2004 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. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include "filemode.h"
#include "stat-macros.h"
/* Set the 's' and 't' flags in file attributes string CHARS,
according to the file mode BITS. */
static void
setst (mode_t bits, char *chars)
{
if (bits & S_ISUID)
{
if (chars[3] != 'x')
/* Set-uid, but not executable by owner. */
chars[3] = 'S';
else
chars[3] = 's';
}
if (bits & S_ISGID)
{
if (chars[6] != 'x')
/* Set-gid, but not executable by group. */
chars[6] = 'S';
else
chars[6] = 's';
}
if (bits & S_ISVTX)
{
if (chars[9] != 'x')
/* Sticky, but not executable by others. */
chars[9] = 'T';
else
chars[9] = 't';
}
}
/* Return a character indicating the type of file described by
file mode BITS:
'd' for directories
'D' for doors
'b' for block special files
'c' for character special files
'n' for network special files
'm' for multiplexor files
'M' for an off-line (regular) file
'l' for symbolic links
's' for sockets
'p' for fifos
'C' for contigous data files
'-' for regular files
'?' for any other file type. */
static char
ftypelet (mode_t bits)
{
if (S_ISBLK (bits))
return 'b';
if (S_ISCHR (bits))
return 'c';
if (S_ISDIR (bits))
return 'd';
if (S_ISREG (bits))
return '-';
if (S_ISFIFO (bits))
return 'p';
if (S_ISLNK (bits))
return 'l';
if (S_ISSOCK (bits))
return 's';
if (S_ISMPC (bits))
return 'm';
if (S_ISNWK (bits))
return 'n';
if (S_ISDOOR (bits))
return 'D';
if (S_ISCTG (bits))
return 'C';
/* The following two tests are for Cray DMF (Data Migration
Facility), which is a HSM file system. A migrated file has a
`st_dm_mode' that is different from the normal `st_mode', so any
tests for migrated files should use the former. */
if (S_ISOFD (bits))
/* off line, with data */
return 'M';
/* off line, with no data */
if (S_ISOFL (bits))
return 'M';
return '?';
}
/* Like filemodestring, but only the relevant part of the `struct stat'
is given as an argument. */
void
mode_string (mode_t mode, char *str)
{
str[0] = ftypelet (mode);
str[1] = mode & S_IRUSR ? 'r' : '-';
str[2] = mode & S_IWUSR ? 'w' : '-';
str[3] = mode & S_IXUSR ? 'x' : '-';
str[4] = mode & S_IRGRP ? 'r' : '-';
str[5] = mode & S_IWGRP ? 'w' : '-';
str[6] = mode & S_IXGRP ? 'x' : '-';
str[7] = mode & S_IROTH ? 'r' : '-';
str[8] = mode & S_IWOTH ? 'w' : '-';
str[9] = mode & S_IXOTH ? 'x' : '-';
setst (mode, str);
}
/* 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 regular, '?' 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. */
void
filemodestring (struct stat *statp, char *str)
{
mode_string (statp->st_mode, str);
}
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