1/* filemode.c -- make a string describing file modes 2 Copyright (C) 1985, 1990, 1993, 2001, 2002, 2003, 2004, 3 2005, 2006, 2007 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18 USA. */ 19 20#ifdef HAVE_CONFIG_H 21#include <config.h> 22#endif 23 24#include <sys/types.h> 25#include <sys/stat.h> 26 27#if !S_IRUSR 28# if S_IREAD 29# define S_IRUSR S_IREAD 30# else 31# define S_IRUSR 00400 32# endif 33#endif 34 35#if !S_IWUSR 36# if S_IWRITE 37# define S_IWUSR S_IWRITE 38# else 39# define S_IWUSR 00200 40# endif 41#endif 42 43#if !S_IXUSR 44# if S_IEXEC 45# define S_IXUSR S_IEXEC 46# else 47# define S_IXUSR 00100 48# endif 49#endif 50 51#ifdef STAT_MACROS_BROKEN 52#undef S_ISBLK 53#undef S_ISCHR 54#undef S_ISDIR 55#undef S_ISFIFO 56#undef S_ISLNK 57#undef S_ISMPB 58#undef S_ISMPC 59#undef S_ISNWK 60#undef S_ISREG 61#undef S_ISSOCK 62#endif /* STAT_MACROS_BROKEN. */ 63 64#if !defined(S_ISBLK) && defined(S_IFBLK) 65#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 66#endif 67#if !defined(S_ISCHR) && defined(S_IFCHR) 68#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 69#endif 70#if !defined(S_ISDIR) && defined(S_IFDIR) 71#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 72#endif 73#if !defined(S_ISREG) && defined(S_IFREG) 74#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 75#endif 76#if !defined(S_ISFIFO) && defined(S_IFIFO) 77#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 78#endif 79#if !defined(S_ISLNK) && defined(S_IFLNK) 80#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) 81#endif 82#if !defined(S_ISSOCK) && defined(S_IFSOCK) 83#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 84#endif 85#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */ 86#define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB) 87#define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC) 88#endif 89#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */ 90#define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK) 91#endif 92 93void mode_string (); 94static char ftypelet (); 95static void rwx (); 96static void setst (); 97 98/* filemodestring - fill in string STR with an ls-style ASCII 99 representation of the st_mode field of file stats block STATP. 100 10 characters are stored in STR; no terminating null is added. 101 The characters stored in STR are: 102 103 0 File type. 'd' for directory, 'c' for character 104 special, 'b' for block special, 'm' for multiplex, 105 'l' for symbolic link, 's' for socket, 'p' for fifo, 106 '-' for regular, '?' for any other file type 107 108 1 'r' if the owner may read, '-' otherwise. 109 110 2 'w' if the owner may write, '-' otherwise. 111 112 3 'x' if the owner may execute, 's' if the file is 113 set-user-id, '-' otherwise. 114 'S' if the file is set-user-id, but the execute 115 bit isn't set. 116 117 4 'r' if group members may read, '-' otherwise. 118 119 5 'w' if group members may write, '-' otherwise. 120 121 6 'x' if group members may execute, 's' if the file is 122 set-group-id, '-' otherwise. 123 'S' if it is set-group-id but not executable. 124 125 7 'r' if any user may read, '-' otherwise. 126 127 8 'w' if any user may write, '-' otherwise. 128 129 9 'x' if any user may execute, 't' if the file is "sticky" 130 (will be retained in swap space after execution), '-' 131 otherwise. 132 'T' if the file is sticky but not executable. */ 133 134void 135filemodestring (statp, str) 136 struct stat *statp; 137 char *str; 138{ 139 mode_string (statp->st_mode, str); 140} 141 142/* Like filemodestring, but only the relevant part of the `struct stat' 143 is given as an argument. */ 144 145void 146mode_string (mode, str) 147 unsigned short mode; 148 char *str; 149{ 150 str[0] = ftypelet ((long) mode); 151 rwx ((mode & 0700) << 0, &str[1]); 152 rwx ((mode & 0070) << 3, &str[4]); 153 rwx ((mode & 0007) << 6, &str[7]); 154 setst (mode, str); 155} 156 157/* Return a character indicating the type of file described by 158 file mode BITS: 159 'd' for directories 160 'b' for block special files 161 'c' for character special files 162 'm' for multiplexor files 163 'l' for symbolic links 164 's' for sockets 165 'p' for fifos 166 '-' for regular files 167 '?' for any other file type. */ 168 169static char 170ftypelet (bits) 171 long bits; 172{ 173#ifdef S_ISBLK 174 if (S_ISBLK (bits)) 175 return 'b'; 176#endif 177 if (S_ISCHR (bits)) 178 return 'c'; 179 if (S_ISDIR (bits)) 180 return 'd'; 181 if (S_ISREG (bits)) 182 return '-'; 183#ifdef S_ISFIFO 184 if (S_ISFIFO (bits)) 185 return 'p'; 186#endif 187#ifdef S_ISLNK 188 if (S_ISLNK (bits)) 189 return 'l'; 190#endif 191#ifdef S_ISSOCK 192 if (S_ISSOCK (bits)) 193 return 's'; 194#endif 195#ifdef S_ISMPC 196 if (S_ISMPC (bits)) 197 return 'm'; 198#endif 199#ifdef S_ISNWK 200 if (S_ISNWK (bits)) 201 return 'n'; 202#endif 203 return '?'; 204} 205 206/* Look at read, write, and execute bits in BITS and set 207 flags in CHARS accordingly. */ 208 209static void 210rwx (bits, chars) 211 unsigned short bits; 212 char *chars; 213{ 214 chars[0] = (bits & S_IRUSR) ? 'r' : '-'; 215 chars[1] = (bits & S_IWUSR) ? 'w' : '-'; 216 chars[2] = (bits & S_IXUSR) ? 'x' : '-'; 217} 218 219/* Set the 's' and 't' flags in file attributes string CHARS, 220 according to the file mode BITS. */ 221 222static void 223setst (bits, chars) 224 unsigned short bits; 225 char *chars; 226{ 227#ifdef S_ISUID 228 if (bits & S_ISUID) 229 { 230 if (chars[3] != 'x') 231 /* Set-uid, but not executable by owner. */ 232 chars[3] = 'S'; 233 else 234 chars[3] = 's'; 235 } 236#endif 237#ifdef S_ISGID 238 if (bits & S_ISGID) 239 { 240 if (chars[6] != 'x') 241 /* Set-gid, but not executable by group. */ 242 chars[6] = 'S'; 243 else 244 chars[6] = 's'; 245 } 246#endif 247#ifdef S_ISVTX 248 if (bits & S_ISVTX) 249 { 250 if (chars[9] != 'x') 251 /* Sticky, but not executable by others. */ 252 chars[9] = 'T'; 253 else 254 chars[9] = 't'; 255 } 256#endif 257} 258 259/* arch-tag: 4340830c-15a5-47d2-b45f-1d43c45a91bb 260 (do not change this comment) */ 261