/* filemode.c -- make a string describing file modes
- Copyright (C) 1985, 1990, 1993, 1998 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2014 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.
+ the Free Software Foundation; either version 3 of the License, 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
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-\f
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#include <sys/types.h>
-#include <sys/stat.h>
+#include <config.h>
#include "filemode.h"
-#if !S_IRUSR
-# if S_IREAD
-# define S_IRUSR S_IREAD
-# else
-# define S_IRUSR 00400
-# endif
+/* The following is 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 HAVE_ST_DM_MODE
+# define IS_MIGRATED_FILE(statp) \
+ (S_ISOFD (statp->st_dm_mode) || S_ISOFL (statp->st_dm_mode))
+#else
+# define IS_MIGRATED_FILE(statp) 0
#endif
-#if !S_IWUSR
-# if S_IWRITE
-# define S_IWUSR S_IWRITE
-# else
-# define S_IWUSR 00200
-# endif
-#endif
-
-#if !S_IXUSR
-# if S_IEXEC
-# define S_IXUSR S_IEXEC
-# else
-# define S_IXUSR 00100
-# endif
-#endif
-
-#ifdef STAT_MACROS_BROKEN
-# undef S_ISBLK
-# undef S_ISCHR
-# undef S_ISDIR
-# undef S_ISFIFO
-# undef S_ISLNK
-# undef S_ISMPB
-# undef S_ISMPC
-# undef S_ISNWK
-# undef S_ISREG
-# undef S_ISSOCK
-#endif /* STAT_MACROS_BROKEN. */
-
-#if !defined(S_ISBLK) && defined(S_IFBLK)
-# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
-#endif
-#if !defined(S_ISCHR) && defined(S_IFCHR)
-# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
-#endif
-#if !defined(S_ISDIR) && defined(S_IFDIR)
-# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-#if !defined(S_ISREG) && defined(S_IFREG)
-# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
-#endif
-#if !defined(S_ISFIFO) && defined(S_IFIFO)
-# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
-#endif
-#if !defined(S_ISLNK) && defined(S_IFLNK)
-# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
-#endif
-#if !defined(S_ISSOCK) && defined(S_IFSOCK)
-# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
-#endif
-#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
-# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
-# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
-#endif
-#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
-# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
-#endif
-
-/* Look at read, write, and execute bits in BITS and set
- flags in CHARS accordingly. */
-
-static void
-rwx (short unsigned int bits, char *chars)
-{
- chars[0] = (bits & S_IRUSR) ? 'r' : '-';
- chars[1] = (bits & S_IWUSR) ? 'w' : '-';
- chars[2] = (bits & S_IXUSR) ? 'x' : '-';
-}
-
-/* Set the 's' and 't' flags in file attributes string CHARS,
- according to the file mode BITS. */
-
-static void
-setst (short unsigned int bits, char *chars)
-{
-#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
-}
+#if ! HAVE_DECL_STRMODE
/* 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 multiplexor files
- 'M' for an off-line (regular) file
- 'l' for symbolic links
- 's' for sockets
- 'p' for fifos
- '-' for regular files
- '?' for any other file type. */
+ '-' regular file
+ 'b' block special file
+ 'c' character special file
+ 'C' high performance ("contiguous data") file
+ 'd' directory
+ 'D' door
+ 'l' symbolic link
+ 'm' multiplexed file (7th edition Unix; obsolete)
+ 'n' network special file (HP-UX)
+ 'p' fifo (named pipe)
+ 'P' port
+ 's' socket
+ 'w' whiteout (4.4BSD)
+ '?' some other file type */
static char
-ftypelet (long int bits)
+ftypelet (mode_t bits)
{
-#ifdef S_ISBLK
+ /* These are the most common, so test for them first. */
+ if (S_ISREG (bits))
+ return '-';
+ if (S_ISDIR (bits))
+ return 'd';
+
+ /* Other letters standardized by POSIX 1003.1-2004. */
if (S_ISBLK (bits))
return 'b';
-#endif
if (S_ISCHR (bits))
return 'c';
- if (S_ISDIR (bits))
- return 'd';
- if (S_ISREG (bits))
- return '-';
-#ifdef S_ISFIFO
- if (S_ISFIFO (bits))
- return 'p';
-#endif
-#ifdef S_ISLNK
if (S_ISLNK (bits))
return 'l';
-#endif
-#ifdef S_ISSOCK
+ if (S_ISFIFO (bits))
+ return 'p';
+
+ /* Other file types (though not letters) standardized by POSIX. */
if (S_ISSOCK (bits))
return 's';
-#endif
-#ifdef S_ISMPC
- if (S_ISMPC (bits))
+
+ /* Nonstandard file types. */
+ if (S_ISCTG (bits))
+ return 'C';
+ if (S_ISDOOR (bits))
+ return 'D';
+ if (S_ISMPB (bits) || S_ISMPC (bits) || S_ISMPX (bits))
return 'm';
-#endif
-#ifdef S_ISNWK
if (S_ISNWK (bits))
return 'n';
-#endif
-
- /* 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_ISPORT (bits))
+ return 'P';
+ if (S_ISWHT (bits))
+ return 'w';
-#ifdef S_ISOFD
- if (S_ISOFD (bits))
- /* off line, with data */
- return 'M';
-#endif
-#ifdef S_ISOFL
- /* off line, with no data */
- if (S_ISOFL (bits))
- return 'M';
-#endif
return '?';
}
-/* Like filemodestring, but only the relevant part of the `struct stat'
- is given as an argument. */
+/* Like filemodestring, but rely only on MODE. */
void
-mode_string (short unsigned int mode, char *str)
+strmode (mode_t mode, char *str)
{
- str[0] = ftypelet ((long) mode);
- rwx ((mode & 0700) << 0, &str[1]);
- rwx ((mode & 0070) << 3, &str[4]);
- rwx ((mode & 0007) << 6, &str[7]);
- setst (mode, str);
+ str[0] = ftypelet (mode);
+ str[1] = mode & S_IRUSR ? 'r' : '-';
+ str[2] = mode & S_IWUSR ? 'w' : '-';
+ str[3] = (mode & S_ISUID
+ ? (mode & S_IXUSR ? 's' : 'S')
+ : (mode & S_IXUSR ? 'x' : '-'));
+ str[4] = mode & S_IRGRP ? 'r' : '-';
+ str[5] = mode & S_IWGRP ? 'w' : '-';
+ str[6] = (mode & S_ISGID
+ ? (mode & S_IXGRP ? 's' : 'S')
+ : (mode & S_IXGRP ? 'x' : '-'));
+ str[7] = mode & S_IROTH ? 'r' : '-';
+ str[8] = mode & S_IWOTH ? 'w' : '-';
+ str[9] = (mode & S_ISVTX
+ ? (mode & S_IXOTH ? 't' : 'T')
+ : (mode & S_IXOTH ? 'x' : '-'));
+ str[10] = ' ';
+ str[11] = '\0';
}
+#endif /* ! HAVE_DECL_STRMODE */
+
/* 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.
+ 12 characters are stored in STR.
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
+ 0 File type, as in ftypelet above, except that other letters are used
+ for files whose type cannot be determined solely from st_mode:
+
+ 'F' semaphore
+ 'M' migrated file (Cray DMF)
+ 'Q' message queue
+ 'S' shared memory object
+ 'T' typed memory object
+
+ 1 'r' if the owner may read, '-' otherwise.
+
+ 2 'w' if the owner may write, '-' otherwise.
- 1 'r' if the owner may read, '-' 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.
- 2 'w' if the owner may write, '-' otherwise.
+ 4 'r' if group members may read, '-' 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.
+ 5 'w' if group members may write, '-' otherwise.
- 4 'r' if group members may read, '-' 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.
- 5 'w' if group members may write, '-' otherwise.
+ 7 'r' if any user may read, '-' 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.
+ 8 'w' if any user may write, '-' otherwise.
- 7 'r' if any user may read, '-' 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.
- 8 'w' if any user may write, '-' otherwise.
+ 10 ' ' for compatibility with 4.4BSD strmode,
+ since this interface does not support ACLs.
- 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. */
+ 11 '\0'. */
void
-filemodestring (struct stat *statp, char *str)
+filemodestring (struct stat const *statp, char *str)
{
- mode_string (statp->st_mode, str);
+ strmode (statp->st_mode, str);
+
+ if (S_TYPEISSEM (statp))
+ str[0] = 'F';
+ else if (IS_MIGRATED_FILE (statp))
+ str[0] = 'M';
+ else if (S_TYPEISMQ (statp))
+ str[0] = 'Q';
+ else if (S_TYPEISSHM (statp))
+ str[0] = 'S';
+ else if (S_TYPEISTMO (statp))
+ str[0] = 'T';
}
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