2 * $Id: unix.c,v 1.20 2001-08-15 01:37:34 srittau Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
16 #include <sys/types.h>
17 #include <sys/param.h>
19 #include <sys/syslog.h>
20 #include <netatalk/endian.h>
23 #include <atalk/afp.h>
27 #include "directory.h"
32 * Get the free space on a partition.
34 int ustatfs_getvolspace( vol, bfree, btotal, bsize )
35 const struct vol *vol;
36 VolSpace *bfree, *btotal;
39 VolSpace maxVolSpace = (~(VolSpace)0);
48 if ( statfs( vol->v_path, &sfs ) < 0 ) {
49 syslog(LOG_ERR, "ustatfs_getvolspace unable to stat %s", vol->v_path);
50 return( AFPERR_PARAM );
54 *bfree = (VolSpace) sfs.fd_req.bfreen;
57 *bfree = (VolSpace) sfs.f_bavail;
58 *bsize = sfs.f_frsize;
61 if ( *bfree > maxVolSpace / *bsize ) {
69 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
72 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
75 // see similar block above comments
76 if ( *btotal > maxVolSpace / *bsize ) {
77 *btotal = maxVolSpace;
85 static __inline__ int utombits( bits )
92 mbits |= ( bits & ( S_IREAD >> 6 )) ? (AR_UREAD | AR_USEARCH) : 0;
93 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
94 /* Do we really need this?
95 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0; */
100 void utommode( stat, ma )
106 mode = stat->st_mode;
108 ma->ma_world = utombits( mode );
111 ma->ma_group = utombits( mode );
114 ma->ma_owner = utombits( mode );
116 if ( (uuid == stat->st_uid) || (uuid == 0)) {
117 ma->ma_user = ma->ma_owner | AR_UOWN;
118 } else if ( gmem( stat->st_gid )) {
119 ma->ma_user = ma->ma_group;
121 ma->ma_user = ma->ma_world;
125 * There are certain things the mac won't try if you don't have
126 * the "owner" bit set, even tho you can do these things on unix wiht
127 * only write permission. What were the things?
129 if ( ma->ma_user & AR_UWRITE ) {
130 ma->ma_user |= AR_UOWN;
136 * Calculate the mode for a directory using Posix access() calls to
137 * estimate permission, a la mdw.
139 void accessmode( path, ma, dir )
144 if ( access( path, R_OK|W_OK|X_OK ) == 0 ) {
145 ma->ma_user = AR_UREAD|AR_UWRITE|AR_USEARCH|AR_UOWN;
146 ma->ma_owner = AR_UREAD|AR_UWRITE|AR_USEARCH;
147 } else if ( access( path, R_OK|X_OK ) == 0 ) {
148 ma->ma_user = AR_UREAD|AR_USEARCH;
149 ma->ma_owner = AR_UREAD|AR_USEARCH;
151 ma->ma_user = ma->ma_owner = 0;
152 if ( access( path, R_OK ) == 0 ) {
153 ma->ma_user |= AR_UREAD;
154 ma->ma_owner |= AR_UREAD;
156 if ( access( path, X_OK ) == 0 ) {
157 ma->ma_user |= AR_USEARCH;
158 ma->ma_owner |= AR_USEARCH;
160 if ( access( path, W_OK ) == 0 ) {
161 ma->ma_user |= AR_UWRITE|AR_UOWN;
162 ma->ma_owner |= AR_UWRITE;
172 for ( i = 0; i < ngroups; i++ ) {
173 if ( groups[ i ] == gid ) {
180 static __inline__ mode_t mtoubits( bits )
187 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
188 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
189 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
190 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
195 mode_t mtoumode( ma )
201 mode |= mtoubits( ma->ma_owner );
204 mode |= mtoubits( ma->ma_group );
207 mode |= mtoubits( ma->ma_world );
212 inline int stickydirmode(name, mode, dropbox)
220 #endif /* DROPKLUDGE */
222 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
226 if (mode & S_IWOTH) {
228 else { /* if S_IWOTH and not S_IROTH */
230 if ( seteuid(0) < 0) {
231 syslog( LOG_ERR, "stickydirmode: unable to seteuid root: %m");
233 if ( retval=chmod( name, ( DIRBITS | mode | S_ISVTX) ) < 0) {
234 syslog( LOG_ERR, "stickydirmode: chmod \"%s\": %m", name );
235 return(AFPERR_ACCESS);
238 syslog( LOG_INFO, "stickydirmode: (debug) chmod \"%s\": %m", name );
241 } /* end getting retval */
242 } /* end if not & S_IROTH */
243 } else { /* end if S_IWOTH and not S_IROTH */
244 #endif /* DROPKLUDGE */
245 if ( (retval=chmod( name, DIRBITS | mode )) < 0 ) {
246 syslog( LOG_ERR, "stickydirmode: chmod \"%s\": %s",
247 name, strerror(errno) );
250 } /* end if not mode */
251 } /* end checking for "dropbox" */
252 #endif /* DROPKLUDGE */
256 int setdeskmode( mode )
259 char wd[ MAXPATHLEN + 1];
261 char modbuf[ 12 + 1], *m;
262 struct dirent *deskp, *subp;
265 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
268 if ( chdir( ".AppleDesktop" ) < 0 ) {
271 if (( desk = opendir( "." )) == NULL ) {
272 if ( chdir( wd ) < 0 ) {
273 syslog( LOG_ERR, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
277 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
278 if ( strcmp( deskp->d_name, "." ) == 0 ||
279 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
282 strcpy( modbuf, deskp->d_name );
283 strcat( modbuf, "/" );
284 m = strchr( modbuf, '\0' );
285 if (( sub = opendir( deskp->d_name )) == NULL ) {
288 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
289 if ( strcmp( subp->d_name, "." ) == 0 ||
290 strcmp( subp->d_name, ".." ) == 0 ) {
294 strcat( modbuf, subp->d_name );
295 /* XXX: need to preserve special modes */
296 if (stat(modbuf, &st) < 0) {
297 syslog( LOG_ERR, "setdeskmode: stat %s: %s",
298 modbuf, strerror(errno) );
302 if (S_ISDIR(st.st_mode)) {
303 if ( chmod( modbuf, DIRBITS | mode ) < 0 ) {
304 syslog( LOG_ERR, "setdeskmode: chmod %s: %s",
305 modbuf, strerror(errno) );
307 } else if ( chmod( modbuf, mode ) < 0 ) {
308 syslog( LOG_ERR, "setdeskmode: chmod %s: %s",
309 modbuf, strerror(errno) );
314 /* XXX: need to preserve special modes */
315 if ( chmod( deskp->d_name, DIRBITS | mode ) < 0 ) {
316 syslog( LOG_ERR, "setdeskmode: chmod %s: %s",
317 deskp->d_name, strerror(errno) );
321 if ( chdir( wd ) < 0 ) {
322 syslog( LOG_ERR, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
325 /* XXX: need to preserve special modes */
326 if ( chmod( ".AppleDesktop", DIRBITS | mode ) < 0 ) {
327 syslog( LOG_ERR, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
332 int setdirmode( mode, noadouble, dropbox )
337 char buf[ MAXPATHLEN + 1];
343 if (( dir = opendir( "." )) == NULL ) {
344 syslog( LOG_ERR, "setdirmode: opendir .: %s", strerror(errno) );
348 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
349 if ( *dirp->d_name == '.' ) {
352 if ( stat( dirp->d_name, &st ) < 0 ) {
353 syslog( LOG_ERR, "setdirmode: stat %s: %s",
354 dirp->d_name, strerror(errno) );
358 if (S_ISREG(st.st_mode)) {
359 /* XXX: need to preserve special modes */
360 if (S_ISDIR(st.st_mode)) {
361 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
363 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
368 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
370 goto setdirmode_noadouble;
371 syslog( LOG_ERR, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
374 strcpy( buf, ".AppleDouble" );
376 m = strchr( buf, '\0' );
377 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
378 if ( strcmp( dirp->d_name, "." ) == 0 ||
379 strcmp( dirp->d_name, ".." ) == 0 ) {
383 strcat( buf, dirp->d_name );
385 if ( stat( buf, &st ) < 0 ) {
386 syslog( LOG_ERR, "setdirmode: stat %s: %s", buf, strerror(errno) );
390 if (S_ISDIR(st.st_mode)) {
391 stickydirmode( buf, DIRBITS | mode, dropbox );
393 stickydirmode( buf, mode, dropbox );
397 /* XXX: use special bits to tag directory permissions */
399 /* XXX: need to preserve special modes */
400 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
403 setdirmode_noadouble:
404 /* XXX: need to preserve special modes */
405 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
410 int setdeskowner( uid, gid )
414 char wd[ MAXPATHLEN + 1];
415 char modbuf[12 + 1], *m;
416 struct dirent *deskp, *subp;
419 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
422 if ( chdir( ".AppleDesktop" ) < 0 ) {
425 if (( desk = opendir( "." )) == NULL ) {
426 if ( chdir( wd ) < 0 ) {
427 syslog( LOG_ERR, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
431 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
432 if ( strcmp( deskp->d_name, "." ) == 0 ||
433 strcmp( deskp->d_name, ".." ) == 0 ||
434 strlen( deskp->d_name ) > 2 ) {
437 strcpy( modbuf, deskp->d_name );
438 strcat( modbuf, "/" );
439 m = strchr( modbuf, '\0' );
440 if (( sub = opendir( deskp->d_name )) == NULL ) {
443 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
444 if ( strcmp( subp->d_name, "." ) == 0 ||
445 strcmp( subp->d_name, ".." ) == 0 ) {
449 strcat( modbuf, subp->d_name );
450 /* XXX: add special any uid, ignore group bits */
451 if ( chown( modbuf, uid, gid ) < 0 ) {
452 syslog( LOG_ERR, "setdeskown: chown %s: %s",
453 modbuf, strerror(errno) );
457 /* XXX: add special any uid, ignore group bits */
458 if ( chown( deskp->d_name, uid, gid ) < 0 ) {
459 syslog( LOG_ERR, "setdeskowner: chown %s: %s",
460 deskp->d_name, strerror(errno) );
464 if ( chdir( wd ) < 0 ) {
465 syslog( LOG_ERR, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
468 if ( chown( ".AppleDesktop", uid, gid ) < 0 ) {
469 syslog( LOG_ERR, "setdeskowner: chown .AppleDesktop: %s",
476 /* uid/gid == 0 need to be handled as special cases. they really mean
477 * that user/group should inherit from other, but that doesn't fit
478 * into the unix permission scheme. we can get around this by
479 * co-opting some bits. */
480 int setdirowner( uid, gid, noadouble )
485 char buf[ MAXPATHLEN + 1];
491 if (( dir = opendir( "." )) == NULL ) {
494 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
495 if ( *dirp->d_name == '.' ) {
498 if ( stat( dirp->d_name, &st ) < 0 ) {
499 syslog( LOG_ERR, "setdirowner: stat %s: %s",
500 dirp->d_name, strerror(errno) );
503 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
504 if ( chown( dirp->d_name, uid, gid ) < 0 ) {
505 syslog( LOG_DEBUG, "setdirowner: chown %s: %s",
506 dirp->d_name, strerror(errno) );
507 /* return ( -1 ); Sometimes this is okay */
512 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
514 goto setdirowner_noadouble;
517 strcpy( buf, ".AppleDouble" );
519 m = strchr( buf, '\0' );
520 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
521 if ( strcmp( dirp->d_name, "." ) == 0 ||
522 strcmp( dirp->d_name, ".." ) == 0 ) {
526 strcat( buf, dirp->d_name );
527 if ( chown( buf, uid, gid ) < 0 ) {
528 syslog( LOG_DEBUG, "setdirowner: chown %d/%d %s: %s",
529 uid, gid, buf, strerror(errno) );
530 /* return ( -1 ); Sometimes this is okay */
536 * We cheat: we know that chown doesn't do anything.
538 if ( stat( ".AppleDouble", &st ) < 0 ) {
539 syslog( LOG_ERR, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
542 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 ) {
543 syslog( LOG_DEBUG, "setdirowner: chown %d/%d .AppleDouble: %s",
544 uid, gid, strerror(errno) );
545 /* return ( -1 ); Sometimes this is okay */
548 setdirowner_noadouble:
549 if ( stat( ".", &st ) < 0 ) {
552 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 ) {
553 syslog( LOG_DEBUG, "setdirowner: chown %d/%d .: %s",
554 uid, gid, strerror(errno) );