X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffilemode.c;h=08b9b13bb6ebd6ccb47a19e6470e8aa556240591;hb=47b3dd4ed61927c7dfc9ba870d9c0fa763ac57d8;hp=451c7ac65205365857ebf2f9054d920a84566ed6;hpb=d87c39464604e74f580c7fae835be31a4c125c36;p=gnulib.git diff --git a/lib/filemode.c b/lib/filemode.c index 451c7ac65..08b9b13bb 100644 --- a/lib/filemode.c +++ b/lib/filemode.c @@ -1,5 +1,5 @@ /* filemode.c -- make a string describing file modes - Copyright (C) 1985, 1990 Free Software Foundation, Inc. + 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 @@ -12,210 +12,165 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include -#include -#ifndef S_IREAD -#define S_IREAD S_IRUSR -#define S_IWRITE S_IWUSR -#define S_IEXEC S_IXUSR -#endif -#ifndef S_ISREG /* Doesn't have POSIX.1 stat stuff. */ -#define mode_t unsigned short -#endif -#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 - -void mode_string (); -static char ftypelet (); -static void rwx (); -static void setst (); - -/* 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 + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - 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. +#ifdef HAVE_CONFIG_H +# include +#endif - 8 'w' if any user may write, '-' otherwise. +#include +#include - 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. */ +#include "filemode.h" +#include "stat-macros.h" -void -filemodestring (statp, str) - struct stat *statp; - char *str; -{ - mode_string (statp->st_mode, str); -} -/* Like filemodestring, but only the relevant part of the `struct stat' - is given as an argument. */ +/* Set the 's' and 't' flags in file attributes string CHARS, + according to the file mode BITS. */ -void -mode_string (mode, str) - unsigned short mode; - char *str; +static void +setst (mode_t bits, char *chars) { - str[0] = ftypelet (mode); - rwx ((mode & 0700) << 0, &str[1]); - rwx ((mode & 0070) << 3, &str[4]); - rwx ((mode & 0007) << 6, &str[7]); - setst (mode, str); + 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 (bits) - mode_t bits; +ftypelet (mode_t bits) { -#ifdef S_ISBLK 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_ISSOCK (bits)) return 's'; -#endif -#ifdef S_ISMPC if (S_ISMPC (bits)) return 'm'; -#endif -#ifdef S_ISNWK if (S_ISNWK (bits)) return 'n'; -#endif + 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 '?'; } -/* Look at read, write, and execute bits in BITS and set - flags in CHARS accordingly. */ +/* Like filemodestring, but only the relevant part of the `struct stat' + is given as an argument. */ -static void -rwx (bits, chars) - unsigned short bits; - char *chars; +void +mode_string (mode_t mode, char *str) { - chars[0] = (bits & S_IREAD) ? 'r' : '-'; - chars[1] = (bits & S_IWRITE) ? 'w' : '-'; - chars[2] = (bits & S_IEXEC) ? 'x' : '-'; + 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); } -/* Set the 's' and 't' flags in file attributes string CHARS, - according to the file mode BITS. */ +/* 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: -static void -setst (bits, chars) - unsigned short bits; - char *chars; + 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) { -#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 + mode_string (statp->st_mode, str); }