2 * $Id: unix.c,v 1.38.2.1 2003-02-04 19:10:35 didg 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 <atalk/logger.h>
20 #include <netatalk/endian.h>
23 #include <atalk/adouble.h>
24 #include <atalk/afp.h>
29 #else /* STDC_HEADERS */
33 #endif /* HAVE_STRCHR */
34 char *strchr (), *strrchr ();
36 #define memcpy(d,s,n) bcopy ((s), (d), (n))
37 #define memmove(d,s,n) bcopy ((s), (d), (n))
38 #endif /* ! HAVE_MEMCPY */
39 #endif /* STDC_HEADERS */
43 #endif /* HAVE_FCNTL_H */
45 #include "directory.h"
50 * Get the free space on a partition.
52 int ustatfs_getvolspace( vol, bfree, btotal, bsize )
53 const struct vol *vol;
54 VolSpace *bfree, *btotal;
57 VolSpace maxVolSpace = (~(VolSpace)0);
66 if ( statfs( vol->v_path, &sfs ) < 0 ) {
67 LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
68 return( AFPERR_PARAM );
72 *bfree = (VolSpace) sfs.fd_req.bfreen;
75 *bfree = (VolSpace) sfs.f_bavail;
76 *bsize = sfs.f_frsize;
79 if ( *bfree > maxVolSpace / *bsize ) {
87 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
90 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
93 /* see similar block above comments */
94 if ( *btotal > maxVolSpace / *bsize ) {
95 *btotal = maxVolSpace;
103 static __inline__ int utombits( bits )
110 mbits |= ( bits & ( S_IREAD >> 6 )) ? (AR_UREAD | AR_USEARCH) : 0;
111 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
112 /* Do we really need this?
113 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0; */
118 /* --------------------------------
121 void utommode( stat, ma )
127 mode = stat->st_mode;
128 ma->ma_world = utombits( mode );
131 ma->ma_group = utombits( mode );
134 ma->ma_owner = utombits( mode );
136 /* ma_user is a union of all permissions but we must follow
139 if ( (uuid == stat->st_uid) || (uuid == 0)) {
140 ma->ma_user = ma->ma_owner | AR_UOWN;
142 else if ( gmem( stat->st_gid )) {
143 ma->ma_user = ma->ma_group;
146 ma->ma_user = ma->ma_world;
150 * There are certain things the mac won't try if you don't have
151 * the "owner" bit set, even tho you can do these things on unix wiht
152 * only write permission. What were the things?
154 * FIXME and so what ?
157 if ( ma->ma_user & AR_UWRITE ) {
158 ma->ma_user |= AR_UOWN;
165 * Calculate the mode for a directory using a stat() call to
166 * estimate permission.
168 * Note: the previous method, using access(), does not work correctly
171 void accessmode( path, ma, dir, st )
180 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
182 if (stat(path, &sb) != 0)
195 for ( i = 0; i < ngroups; i++ ) {
196 if ( groups[ i ] == gid ) {
203 static __inline__ mode_t mtoubits( bits )
210 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
211 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
212 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
213 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
218 /* ----------------------------------
219 from the finder's share windows (menu--> File--> sharing...)
220 and from AFP 3.0 spec page 63
221 the mac mode should be save somewhere
223 mode_t mtoumode( ma )
229 mode |= mtoubits( ma->ma_owner |ma->ma_world);
232 mode |= mtoubits( ma->ma_group |ma->ma_world);
235 mode |= mtoubits( ma->ma_world );
241 a dropbox is a folder where w is set but not r eg:
242 rwx-wx-wx or rwx-wx--
243 rwx----wx (is not asked by a Mac with OS >= 8.0 ?)
245 static int stickydirmode(name, mode, dropbox)
253 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
257 if ( ( (mode & S_IWOTH) && !(mode & S_IROTH)) ||
258 ( (mode & S_IWGRP) && !(mode & S_IRGRP)) )
261 if ( seteuid(0) < 0) {
262 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
264 if ( (retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) )) < 0) {
265 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
268 LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
275 #endif /* DROPKLUDGE */
278 * Ignore EPERM errors: We may be dealing with a directory that is
279 * group writable, in which case chmod will fail.
281 if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
282 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",name, strerror(errno) );
289 int setdeskmode( mode )
292 char wd[ MAXPATHLEN + 1];
294 char modbuf[ 12 + 1], *m;
295 struct dirent *deskp, *subp;
298 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
301 if ( chdir( ".AppleDesktop" ) < 0 ) {
304 if (( desk = opendir( "." )) == NULL ) {
305 if ( chdir( wd ) < 0 ) {
306 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
310 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
311 if ( strcmp( deskp->d_name, "." ) == 0 ||
312 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
315 strcpy( modbuf, deskp->d_name );
316 strcat( modbuf, "/" );
317 m = strchr( modbuf, '\0' );
318 if (( sub = opendir( deskp->d_name )) == NULL ) {
321 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
322 if ( strcmp( subp->d_name, "." ) == 0 ||
323 strcmp( subp->d_name, ".." ) == 0 ) {
327 strcat( modbuf, subp->d_name );
328 /* XXX: need to preserve special modes */
329 if (stat(modbuf, &st) < 0) {
330 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
331 modbuf, strerror(errno) );
335 if (S_ISDIR(st.st_mode)) {
336 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
337 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
338 modbuf, strerror(errno) );
340 } else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
341 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
342 modbuf, strerror(errno) );
347 /* XXX: need to preserve special modes */
348 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
349 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
350 deskp->d_name, strerror(errno) );
354 if ( chdir( wd ) < 0 ) {
355 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
358 /* XXX: need to preserve special modes */
359 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
360 LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
365 int setfilmode(name, mode, st)
371 mode_t mask = S_IRUSR |S_IWUSR | S_IRGRP | S_IWGRP |S_IROTH | S_IWOTH;
374 if (stat(name, &sb) != 0)
378 mode &= mask; /* keep only rw-rw-rw in mode */
379 mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
380 if ( chmod( name, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
386 int setdirmode( mode, noadouble, dropbox )
391 char buf[ MAXPATHLEN + 1];
397 if (( dir = opendir( "." )) == NULL ) {
398 LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
402 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
403 if ( *dirp->d_name == '.' ) {
406 if ( stat( dirp->d_name, &st ) < 0 ) {
407 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
408 dirp->d_name, strerror(errno) );
412 if (S_ISREG(st.st_mode)) {
413 if (setfilmode(dirp->d_name, mode, &st) < 0) {
414 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",
415 dirp->d_name, strerror(errno) );
420 /* XXX: need to preserve special modes */
421 else if (S_ISDIR(st.st_mode)) {
422 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
424 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
431 /* change perm of .AppleDouble's files
433 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
435 goto setdirmode_noadouble;
436 LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
439 strcpy( buf, ".AppleDouble" );
441 m = strchr( buf, '\0' );
442 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
443 if ( strcmp( dirp->d_name, "." ) == 0 ||
444 strcmp( dirp->d_name, ".." ) == 0 ) {
448 strcat( buf, dirp->d_name );
450 if ( stat( buf, &st ) < 0 ) {
451 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
454 if (S_ISREG(st.st_mode)) {
455 if (setfilmode(buf, ad_hf_mode(mode), &st) < 0) {
456 /* FIXME what do we do then? */
462 /* XXX: use special bits to tag directory permissions */
464 /* XXX: need to preserve special modes */
465 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
468 setdirmode_noadouble:
469 /* XXX: need to preserve special modes */
470 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
475 int setdeskowner( uid, gid )
479 char wd[ MAXPATHLEN + 1];
480 char modbuf[12 + 1], *m;
481 struct dirent *deskp, *subp;
484 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
487 if ( chdir( ".AppleDesktop" ) < 0 ) {
490 if (( desk = opendir( "." )) == NULL ) {
491 if ( chdir( wd ) < 0 ) {
492 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
496 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
497 if ( strcmp( deskp->d_name, "." ) == 0 ||
498 strcmp( deskp->d_name, ".." ) == 0 ||
499 strlen( deskp->d_name ) > 2 ) {
502 strcpy( modbuf, deskp->d_name );
503 strcat( modbuf, "/" );
504 m = strchr( modbuf, '\0' );
505 if (( sub = opendir( deskp->d_name )) == NULL ) {
508 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
509 if ( strcmp( subp->d_name, "." ) == 0 ||
510 strcmp( subp->d_name, ".." ) == 0 ) {
514 strcat( modbuf, subp->d_name );
515 /* XXX: add special any uid, ignore group bits */
516 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
517 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
518 modbuf, strerror(errno) );
522 /* XXX: add special any uid, ignore group bits */
523 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
524 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
525 deskp->d_name, strerror(errno) );
529 if ( chdir( wd ) < 0 ) {
530 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
533 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
534 LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
541 /* uid/gid == 0 need to be handled as special cases. they really mean
542 * that user/group should inherit from other, but that doesn't fit
543 * into the unix permission scheme. we can get around this by
544 * co-opting some bits. */
545 int setdirowner( uid, gid, noadouble )
550 char buf[ MAXPATHLEN + 1];
556 if (( dir = opendir( "." )) == NULL ) {
559 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
560 if ( *dirp->d_name == '.' ) {
563 if ( stat( dirp->d_name, &st ) < 0 ) {
564 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
565 dirp->d_name, strerror(errno) );
568 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
569 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
570 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
571 dirp->d_name, strerror(errno) );
572 /* return ( -1 ); Sometimes this is okay */
577 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
579 goto setdirowner_noadouble;
582 strcpy( buf, ".AppleDouble" );
584 m = strchr( buf, '\0' );
585 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
586 if ( strcmp( dirp->d_name, "." ) == 0 ||
587 strcmp( dirp->d_name, ".." ) == 0 ) {
591 strcat( buf, dirp->d_name );
592 if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
593 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
594 uid, gid, buf, strerror(errno) );
595 /* return ( -1 ); Sometimes this is okay */
601 * We cheat: we know that chown doesn't do anything.
603 if ( stat( ".AppleDouble", &st ) < 0 ) {
604 LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
607 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
609 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
610 uid, gid, strerror(errno) );
611 /* return ( -1 ); Sometimes this is okay */
614 setdirowner_noadouble:
615 if ( stat( ".", &st ) < 0 ) {
618 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
620 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
621 uid, gid, strerror(errno) );