2 * $Id: unix.c,v 1.18 2001-06-06 19:04:25 rufustfirefly Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
15 #include <sys/types.h>
16 #include <sys/param.h>
18 #include <sys/syslog.h>
19 #include <netatalk/endian.h>
22 #include <atalk/afp.h>
26 #include "directory.h"
31 * Get the free space on a partition.
33 int ustatfs_getvolspace( vol, bfree, btotal, bsize )
34 const struct vol *vol;
35 VolSpace *bfree, *btotal;
38 VolSpace maxVolSpace = (~(VolSpace)0);
47 if ( statfs( vol->v_path, &sfs ) < 0 ) {
48 syslog(LOG_ERR, "ustatfs_getvolspace unable to stat %s", vol->v_path);
49 return( AFPERR_PARAM );
53 *bfree = (VolSpace) sfs.fd_req.bfreen;
56 *bfree = (VolSpace) sfs.f_bavail;
57 *bsize = sfs.f_frsize;
60 if ( *bfree > maxVolSpace / *bsize ) {
68 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
71 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
74 // see similar block above comments
75 if ( *btotal > maxVolSpace / *bsize ) {
76 *btotal = maxVolSpace;
84 static __inline__ int utombits( bits )
91 mbits |= ( bits & ( S_IREAD >> 6 )) ? (AR_UREAD | AR_USEARCH) : 0;
92 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
93 /* Do we really need this?
94 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0; */
99 void utommode( stat, ma )
105 mode = stat->st_mode;
107 ma->ma_world = utombits( mode );
110 ma->ma_group = utombits( mode );
113 ma->ma_owner = utombits( mode );
115 if ( (uuid == stat->st_uid) || (uuid == 0)) {
116 ma->ma_user = ma->ma_owner | AR_UOWN;
117 } else if ( gmem( stat->st_gid )) {
118 ma->ma_user = ma->ma_group;
120 ma->ma_user = ma->ma_world;
124 * There are certain things the mac won't try if you don't have
125 * the "owner" bit set, even tho you can do these things on unix wiht
126 * only write permission. What were the things?
128 if ( ma->ma_user & AR_UWRITE ) {
129 ma->ma_user |= AR_UOWN;
135 * Calculate the mode for a directory using Posix access() calls to
136 * estimate permission, a la mdw.
138 void accessmode( path, ma, dir )
143 if ( access( path, R_OK|W_OK|X_OK ) == 0 ) {
144 ma->ma_user = AR_UREAD|AR_UWRITE|AR_USEARCH|AR_UOWN;
145 ma->ma_owner = AR_UREAD|AR_UWRITE|AR_USEARCH;
146 } else if ( access( path, R_OK|X_OK ) == 0 ) {
147 ma->ma_user = AR_UREAD|AR_USEARCH;
148 ma->ma_owner = AR_UREAD|AR_USEARCH;
150 ma->ma_user = ma->ma_owner = 0;
151 if ( access( path, R_OK ) == 0 ) {
152 ma->ma_user |= AR_UREAD;
153 ma->ma_owner |= AR_UREAD;
155 if ( access( path, X_OK ) == 0 ) {
156 ma->ma_user |= AR_USEARCH;
157 ma->ma_owner |= AR_USEARCH;
159 if ( access( path, W_OK ) == 0 ) {
160 ma->ma_user |= AR_UWRITE|AR_UOWN;
161 ma->ma_owner |= AR_UWRITE;
171 for ( i = 0; i < ngroups; i++ ) {
172 if ( groups[ i ] == gid ) {
179 static __inline__ mode_t mtoubits( bits )
186 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
187 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
188 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
189 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
194 mode_t mtoumode( ma )
200 mode |= mtoubits( ma->ma_owner );
203 mode |= mtoubits( ma->ma_group );
206 mode |= mtoubits( ma->ma_world );
211 inline int stickydirmode(name, mode, dropbox)
219 #endif /* DROPKLUDGE */
221 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
225 if (mode & S_IWOTH) {
227 else { /* if S_IWOTH and not S_IROTH */
229 if ( seteuid(0) < 0) {
230 syslog( LOG_ERR, "stickydirmode: unable to seteuid root: %m");
232 if ( retval=chmod( name, ( DIRBITS | mode | S_ISVTX) ) < 0) {
233 syslog( LOG_ERR, "stickydirmode: chmod \"%s\": %m", name );
234 return(AFPERR_ACCESS);
237 syslog( LOG_INFO, "stickydirmode: (debug) chmod \"%s\": %m", name );
240 } /* end getting retval */
241 } /* end if not & S_IROTH */
242 } else { /* end if S_IWOTH and not S_IROTH */
243 #endif /* DROPKLUDGE */
244 if ( (retval=chmod( name, DIRBITS | mode )) < 0 ) {
245 syslog( LOG_ERR, "stickydirmode: chmod \"%s\": %m", name );
248 } /* end if not mode */
249 } /* end checking for "dropbox" */
250 #endif /* DROPKLUDGE */
254 int setdeskmode( mode )
257 char wd[ MAXPATHLEN + 1];
259 char modbuf[ 12 + 1], *m;
260 struct dirent *deskp, *subp;
263 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
266 if ( chdir( ".AppleDesktop" ) < 0 ) {
269 if (( desk = opendir( "." )) == NULL ) {
270 if ( chdir( wd ) < 0 ) {
271 syslog( LOG_ERR, "setdeskmode: chdir %s: %m", wd );
275 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
276 if ( strcmp( deskp->d_name, "." ) == 0 ||
277 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
280 strcpy( modbuf, deskp->d_name );
281 strcat( modbuf, "/" );
282 m = strchr( modbuf, '\0' );
283 if (( sub = opendir( deskp->d_name )) == NULL ) {
286 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
287 if ( strcmp( subp->d_name, "." ) == 0 ||
288 strcmp( subp->d_name, ".." ) == 0 ) {
292 strcat( modbuf, subp->d_name );
293 /* XXX: need to preserve special modes */
294 if (stat(modbuf, &st) < 0) {
295 syslog( LOG_ERR, "setdeskmode: stat %s: %m", modbuf );
299 if (S_ISDIR(st.st_mode)) {
300 if ( chmod( modbuf, DIRBITS | mode ) < 0 ) {
301 syslog( LOG_ERR, "setdeskmode: chmod %s: %m", modbuf );
303 } else if ( chmod( modbuf, mode ) < 0 ) {
304 syslog( LOG_ERR, "setdeskmode: chmod %s: %m", modbuf );
309 /* XXX: need to preserve special modes */
310 if ( chmod( deskp->d_name, DIRBITS | mode ) < 0 ) {
311 syslog( LOG_ERR, "setdeskmode: chmod %s: %m", deskp->d_name );
315 if ( chdir( wd ) < 0 ) {
316 syslog( LOG_ERR, "setdeskmode: chdir %s: %m", wd );
319 /* XXX: need to preserve special modes */
320 if ( chmod( ".AppleDesktop", DIRBITS | mode ) < 0 ) {
321 syslog( LOG_ERR, "setdeskmode: chmod .AppleDesktop: %m" );
326 int setdirmode( mode, noadouble, dropbox )
331 char buf[ MAXPATHLEN + 1];
337 if (( dir = opendir( "." )) == NULL ) {
338 syslog( LOG_ERR, "setdirmode: opendir .: %m" );
342 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
343 if ( *dirp->d_name == '.' ) {
346 if ( stat( dirp->d_name, &st ) < 0 ) {
347 syslog( LOG_ERR, "setdirmode: stat %s: %m", dirp->d_name );
351 if (S_ISREG(st.st_mode)) {
352 /* XXX: need to preserve special modes */
353 if (S_ISDIR(st.st_mode)) {
354 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
356 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
361 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
363 goto setdirmode_noadouble;
364 syslog( LOG_ERR, "setdirmode: opendir .AppleDouble: %m" );
367 strcpy( buf, ".AppleDouble" );
369 m = strchr( buf, '\0' );
370 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
371 if ( strcmp( dirp->d_name, "." ) == 0 ||
372 strcmp( dirp->d_name, ".." ) == 0 ) {
376 strcat( buf, dirp->d_name );
378 if ( stat( buf, &st ) < 0 ) {
379 syslog( LOG_ERR, "setdirmode: stat %s: %m", buf );
383 if (S_ISDIR(st.st_mode)) {
384 stickydirmode( buf, DIRBITS | mode, dropbox );
386 stickydirmode( buf, mode, dropbox );
390 /* XXX: use special bits to tag directory permissions */
392 /* XXX: need to preserve special modes */
393 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
396 setdirmode_noadouble:
397 /* XXX: need to preserve special modes */
398 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
403 int setdeskowner( uid, gid )
407 char wd[ MAXPATHLEN + 1];
408 char modbuf[12 + 1], *m;
409 struct dirent *deskp, *subp;
412 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
415 if ( chdir( ".AppleDesktop" ) < 0 ) {
418 if (( desk = opendir( "." )) == NULL ) {
419 if ( chdir( wd ) < 0 ) {
420 syslog( LOG_ERR, "setdeskowner: chdir %s: %m", wd );
424 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
425 if ( strcmp( deskp->d_name, "." ) == 0 ||
426 strcmp( deskp->d_name, ".." ) == 0 ||
427 strlen( deskp->d_name ) > 2 ) {
430 strcpy( modbuf, deskp->d_name );
431 strcat( modbuf, "/" );
432 m = strchr( modbuf, '\0' );
433 if (( sub = opendir( deskp->d_name )) == NULL ) {
436 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
437 if ( strcmp( subp->d_name, "." ) == 0 ||
438 strcmp( subp->d_name, ".." ) == 0 ) {
442 strcat( modbuf, subp->d_name );
443 /* XXX: add special any uid, ignore group bits */
444 if ( chown( modbuf, uid, gid ) < 0 ) {
445 syslog( LOG_ERR, "setdeskown: chown %s: %m", modbuf );
449 /* XXX: add special any uid, ignore group bits */
450 if ( chown( deskp->d_name, uid, gid ) < 0 ) {
451 syslog( LOG_ERR, "setdeskowner: chown %s: %m", deskp->d_name );
455 if ( chdir( wd ) < 0 ) {
456 syslog( LOG_ERR, "setdeskowner: chdir %s: %m", wd );
459 if ( chown( ".AppleDesktop", uid, gid ) < 0 ) {
460 syslog( LOG_ERR, "setdeskowner: chown .AppleDesktop: %m" );
466 /* uid/gid == 0 need to be handled as special cases. they really mean
467 * that user/group should inherit from other, but that doesn't fit
468 * into the unix permission scheme. we can get around this by
469 * co-opting some bits. */
470 int setdirowner( uid, gid, noadouble )
475 char buf[ MAXPATHLEN + 1];
481 if (( dir = opendir( "." )) == NULL ) {
484 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
485 if ( *dirp->d_name == '.' ) {
488 if ( stat( dirp->d_name, &st ) < 0 ) {
489 syslog( LOG_ERR, "setdirowner: stat %s: %m", dirp->d_name );
492 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
493 if ( chown( dirp->d_name, uid, gid ) < 0 ) {
494 syslog( LOG_DEBUG, "setdirowner: chown %s: %m", dirp->d_name );
495 /* return ( -1 ); Sometimes this is okay */
500 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
502 goto setdirowner_noadouble;
505 strcpy( buf, ".AppleDouble" );
507 m = strchr( buf, '\0' );
508 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
509 if ( strcmp( dirp->d_name, "." ) == 0 ||
510 strcmp( dirp->d_name, ".." ) == 0 ) {
514 strcat( buf, dirp->d_name );
515 if ( chown( buf, uid, gid ) < 0 ) {
516 syslog( LOG_DEBUG, "setdirowner: chown %d/%d %s: %m",
518 /* return ( -1 ); Sometimes this is okay */
524 * We cheat: we know that chown doesn't do anything.
526 if ( stat( ".AppleDouble", &st ) < 0 ) {
527 syslog( LOG_ERR, "setdirowner: stat .AppleDouble: %m" );
530 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 ) {
531 syslog( LOG_DEBUG, "setdirowner: chown %d/%d .AppleDouble: %m",
533 /* return ( -1 ); Sometimes this is okay */
536 setdirowner_noadouble:
537 if ( stat( ".", &st ) < 0 ) {
540 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 ) {
541 syslog( LOG_DEBUG, "setdirowner: chown %d/%d .: %m",