mirror of
https://github.com/coreutils/coreutils.git
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294 lines
6.8 KiB
C
294 lines
6.8 KiB
C
/* filemode.c -- make a string describing file modes
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Copyright (C) 1985, 1990, 1993, 1998-2000 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "filemode.h"
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#if !S_IRUSR
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# if S_IREAD
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# define S_IRUSR S_IREAD
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# else
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# define S_IRUSR 00400
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# endif
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#endif
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#if !S_IWUSR
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# if S_IWRITE
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# define S_IWUSR S_IWRITE
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# else
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# define S_IWUSR 00200
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# endif
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#endif
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#if !S_IXUSR
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# if S_IEXEC
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# define S_IXUSR S_IEXEC
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# else
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# define S_IXUSR 00100
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# endif
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#endif
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#if !S_IRGRP
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# define S_IRGRP (S_IRUSR >> 3)
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#endif
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#if !S_IWGRP
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# define S_IWGRP (S_IWUSR >> 3)
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#endif
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#if !S_IXGRP
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# define S_IXGRP (S_IXUSR >> 3)
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#endif
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#if !S_IROTH
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# define S_IROTH (S_IRUSR >> 6)
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#endif
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#if !S_IWOTH
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# define S_IWOTH (S_IWUSR >> 6)
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#endif
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#if !S_IXOTH
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# define S_IXOTH (S_IXUSR >> 6)
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#endif
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#ifdef STAT_MACROS_BROKEN
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# undef S_ISBLK
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# undef S_ISCHR
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# undef S_ISDIR
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# undef S_ISFIFO
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# undef S_ISLNK
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# undef S_ISMPB
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# undef S_ISMPC
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# undef S_ISNWK
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# undef S_ISREG
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# undef S_ISSOCK
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#endif /* STAT_MACROS_BROKEN. */
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#if !defined S_ISBLK && defined S_IFBLK
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# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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#endif
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#if !defined S_ISCHR && defined S_IFCHR
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# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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#endif
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#if !defined S_ISDIR && defined S_IFDIR
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# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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#if !defined S_ISREG && defined S_IFREG
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# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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#if !defined S_ISFIFO && defined S_IFIFO
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# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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#endif
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#if !defined S_ISLNK && defined S_IFLNK
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# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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#endif
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#if !defined S_ISSOCK && defined S_IFSOCK
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# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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#endif
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#if !defined S_ISMPB && defined S_IFMPB /* V7 */
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# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
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# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
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#endif
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#if !defined S_ISNWK && defined S_IFNWK /* HP/UX */
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# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
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#endif
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#if !defined S_ISDOOR && defined S_IFDOOR /* Solaris 2.5 and up */
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# define S_ISDOOR(m) (((m) & S_IFMT) == S_IFDOOR)
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#endif
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#if !defined S_ISCTG && defined S_IFCTG /* MassComp */
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# define S_ISCTG(m) (((m) & S_IFMT) == S_IFCTG)
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#endif
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/* Set the 's' and 't' flags in file attributes string CHARS,
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according to the file mode BITS. */
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static void
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setst (mode_t bits, char *chars)
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{
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#ifdef S_ISUID
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if (bits & S_ISUID)
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{
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if (chars[3] != 'x')
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/* Set-uid, but not executable by owner. */
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chars[3] = 'S';
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else
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chars[3] = 's';
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}
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#endif
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#ifdef S_ISGID
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if (bits & S_ISGID)
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{
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if (chars[6] != 'x')
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/* Set-gid, but not executable by group. */
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chars[6] = 'S';
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else
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chars[6] = 's';
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}
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#endif
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#ifdef S_ISVTX
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if (bits & S_ISVTX)
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{
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if (chars[9] != 'x')
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/* Sticky, but not executable by others. */
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chars[9] = 'T';
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else
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chars[9] = 't';
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}
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#endif
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}
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/* Return a character indicating the type of file described by
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file mode BITS:
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'd' for directories
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'D' for doors
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'b' for block special files
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'c' for character special files
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'n' for network special files
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'm' for multiplexor files
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'M' for an off-line (regular) file
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'l' for symbolic links
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's' for sockets
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'p' for fifos
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'C' for contigous data files
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'-' for regular files
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'?' for any other file type. */
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static char
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ftypelet (mode_t bits)
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{
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#ifdef S_ISBLK
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if (S_ISBLK (bits))
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return 'b';
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#endif
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if (S_ISCHR (bits))
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return 'c';
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if (S_ISDIR (bits))
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return 'd';
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if (S_ISREG (bits))
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return '-';
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#ifdef S_ISFIFO
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if (S_ISFIFO (bits))
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return 'p';
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#endif
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#ifdef S_ISLNK
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if (S_ISLNK (bits))
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return 'l';
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#endif
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#ifdef S_ISSOCK
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if (S_ISSOCK (bits))
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return 's';
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#endif
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#ifdef S_ISMPC
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if (S_ISMPC (bits))
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return 'm';
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#endif
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#ifdef S_ISNWK
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if (S_ISNWK (bits))
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return 'n';
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#endif
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#ifdef S_ISDOOR
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if (S_ISDOOR (bits))
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return 'D';
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#endif
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#ifdef S_ISCTG
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if (S_ISCTG (bits))
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return 'C';
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#endif
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/* The following two tests are for Cray DMF (Data Migration
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Facility), which is a HSM file system. A migrated file has a
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`st_dm_mode' that is different from the normal `st_mode', so any
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tests for migrated files should use the former. */
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#ifdef S_ISOFD
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if (S_ISOFD (bits))
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/* off line, with data */
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return 'M';
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#endif
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#ifdef S_ISOFL
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/* off line, with no data */
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if (S_ISOFL (bits))
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return 'M';
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#endif
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return '?';
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}
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/* Like filemodestring, but only the relevant part of the `struct stat'
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is given as an argument. */
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void
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mode_string (mode_t mode, char *str)
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{
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str[0] = ftypelet (mode);
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str[1] = mode & S_IRUSR ? 'r' : '-';
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str[2] = mode & S_IWUSR ? 'w' : '-';
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str[3] = mode & S_IXUSR ? 'x' : '-';
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str[4] = mode & S_IRGRP ? 'r' : '-';
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str[5] = mode & S_IWGRP ? 'w' : '-';
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str[6] = mode & S_IXGRP ? 'x' : '-';
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str[7] = mode & S_IROTH ? 'r' : '-';
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str[8] = mode & S_IWOTH ? 'w' : '-';
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str[9] = mode & S_IXOTH ? 'x' : '-';
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setst (mode, str);
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}
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/* filemodestring - fill in string STR with an ls-style ASCII
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representation of the st_mode field of file stats block STATP.
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10 characters are stored in STR; no terminating null is added.
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The characters stored in STR are:
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0 File type. 'd' for directory, 'c' for character
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special, 'b' for block special, 'm' for multiplex,
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'l' for symbolic link, 's' for socket, 'p' for fifo,
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'-' for regular, '?' for any other file type
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1 'r' if the owner may read, '-' otherwise.
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2 'w' if the owner may write, '-' otherwise.
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3 'x' if the owner may execute, 's' if the file is
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set-user-id, '-' otherwise.
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'S' if the file is set-user-id, but the execute
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bit isn't set.
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4 'r' if group members may read, '-' otherwise.
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5 'w' if group members may write, '-' otherwise.
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6 'x' if group members may execute, 's' if the file is
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set-group-id, '-' otherwise.
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'S' if it is set-group-id but not executable.
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7 'r' if any user may read, '-' otherwise.
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8 'w' if any user may write, '-' otherwise.
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9 'x' if any user may execute, 't' if the file is "sticky"
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(will be retained in swap space after execution), '-'
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otherwise.
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'T' if the file is sticky but not executable. */
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void
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filemodestring (struct stat *statp, char *str)
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{
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mode_string (statp->st_mode, str);
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}
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