2 * $Id: unix.c,v 1.37 2002-09-07 19:18:59 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 */
138 if ( (uuid == stat->st_uid) || (uuid == 0)) {
139 ma->ma_user = ma->ma_owner | AR_UOWN;
141 if ( gmem( stat->st_gid )) {
142 ma->ma_user |= ma->ma_group;
144 ma->ma_user |= ma->ma_world;
147 * There are certain things the mac won't try if you don't have
148 * the "owner" bit set, even tho you can do these things on unix wiht
149 * only write permission. What were the things?
151 * FIXME and so what ?
154 if ( ma->ma_user & AR_UWRITE ) {
155 ma->ma_user |= AR_UOWN;
162 * Calculate the mode for a directory using a stat() call to
163 * estimate permission.
165 * Note: the previous method, using access(), does not work correctly
168 void accessmode( path, ma, dir, st )
177 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
179 if (stat(path, &sb) != 0)
192 for ( i = 0; i < ngroups; i++ ) {
193 if ( groups[ i ] == gid ) {
200 static __inline__ mode_t mtoubits( bits )
207 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
208 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
209 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
210 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
215 /* ----------------------------------
216 from the finder's share windows (menu--> File--> sharing...)
217 and from AFP 3.0 spec page 63
218 the mac mode should be save somewhere
220 mode_t mtoumode( ma )
226 mode |= mtoubits( ma->ma_owner |ma->ma_world);
229 mode |= mtoubits( ma->ma_group |ma->ma_world);
232 mode |= mtoubits( ma->ma_world );
238 a dropbox is a folder where w is set but not r eg:
239 rwx-wx-wx or rwx-wx--
240 rwx----wx (is not asked by a Mac with OS >= 8.0 ?)
242 static int stickydirmode(name, mode, dropbox)
250 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
254 if ( ( (mode & S_IWOTH) && !(mode & S_IROTH)) ||
255 ( (mode & S_IWGRP) && !(mode & S_IRGRP)) )
258 if ( seteuid(0) < 0) {
259 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
261 if ( retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) ) < 0) {
262 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
265 LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
272 #endif /* DROPKLUDGE */
275 * Ignore EPERM errors: We may be dealing with a directory that is
276 * group writable, in which case chmod will fail.
278 if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
279 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",name, strerror(errno) );
286 int setdeskmode( mode )
289 char wd[ MAXPATHLEN + 1];
291 char modbuf[ 12 + 1], *m;
292 struct dirent *deskp, *subp;
295 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
298 if ( chdir( ".AppleDesktop" ) < 0 ) {
301 if (( desk = opendir( "." )) == NULL ) {
302 if ( chdir( wd ) < 0 ) {
303 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
307 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
308 if ( strcmp( deskp->d_name, "." ) == 0 ||
309 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
312 strcpy( modbuf, deskp->d_name );
313 strcat( modbuf, "/" );
314 m = strchr( modbuf, '\0' );
315 if (( sub = opendir( deskp->d_name )) == NULL ) {
318 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
319 if ( strcmp( subp->d_name, "." ) == 0 ||
320 strcmp( subp->d_name, ".." ) == 0 ) {
324 strcat( modbuf, subp->d_name );
325 /* XXX: need to preserve special modes */
326 if (stat(modbuf, &st) < 0) {
327 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
328 modbuf, strerror(errno) );
332 if (S_ISDIR(st.st_mode)) {
333 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
334 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
335 modbuf, strerror(errno) );
337 } else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
338 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
339 modbuf, strerror(errno) );
344 /* XXX: need to preserve special modes */
345 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
346 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
347 deskp->d_name, strerror(errno) );
351 if ( chdir( wd ) < 0 ) {
352 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
355 /* XXX: need to preserve special modes */
356 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
357 LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
362 int setfilmode(name, mode, st)
368 mode_t mask = S_IRUSR |S_IWUSR | S_IRGRP | S_IWGRP |S_IROTH | S_IWOTH;
371 if (stat(name, &sb) != 0)
375 mode &= mask; /* keep only rw-rw-rw in mode */
376 mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
377 if ( chmod( name, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
383 int setdirmode( mode, noadouble, dropbox )
388 char buf[ MAXPATHLEN + 1];
394 if (( dir = opendir( "." )) == NULL ) {
395 LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
399 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
400 if ( *dirp->d_name == '.' ) {
403 if ( stat( dirp->d_name, &st ) < 0 ) {
404 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
405 dirp->d_name, strerror(errno) );
409 if (S_ISREG(st.st_mode)) {
410 if (setfilmode(dirp->d_name, mode, &st) < 0) {
411 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",
412 dirp->d_name, strerror(errno) );
417 /* XXX: need to preserve special modes */
418 else if (S_ISDIR(st.st_mode)) {
419 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
421 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
428 /* change perm of .AppleDouble's files
430 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
432 goto setdirmode_noadouble;
433 LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
436 strcpy( buf, ".AppleDouble" );
438 m = strchr( buf, '\0' );
439 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
440 if ( strcmp( dirp->d_name, "." ) == 0 ||
441 strcmp( dirp->d_name, ".." ) == 0 ) {
445 strcat( buf, dirp->d_name );
447 if ( stat( buf, &st ) < 0 ) {
448 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
451 if (S_ISREG(st.st_mode)) {
452 if (setfilmode(buf, ad_hf_mode(mode), &st) < 0) {
453 /* FIXME what do we do then? */
459 /* XXX: use special bits to tag directory permissions */
461 /* XXX: need to preserve special modes */
462 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
465 setdirmode_noadouble:
466 /* XXX: need to preserve special modes */
467 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
472 int setdeskowner( uid, gid )
476 char wd[ MAXPATHLEN + 1];
477 char modbuf[12 + 1], *m;
478 struct dirent *deskp, *subp;
481 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
484 if ( chdir( ".AppleDesktop" ) < 0 ) {
487 if (( desk = opendir( "." )) == NULL ) {
488 if ( chdir( wd ) < 0 ) {
489 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
493 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
494 if ( strcmp( deskp->d_name, "." ) == 0 ||
495 strcmp( deskp->d_name, ".." ) == 0 ||
496 strlen( deskp->d_name ) > 2 ) {
499 strcpy( modbuf, deskp->d_name );
500 strcat( modbuf, "/" );
501 m = strchr( modbuf, '\0' );
502 if (( sub = opendir( deskp->d_name )) == NULL ) {
505 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
506 if ( strcmp( subp->d_name, "." ) == 0 ||
507 strcmp( subp->d_name, ".." ) == 0 ) {
511 strcat( modbuf, subp->d_name );
512 /* XXX: add special any uid, ignore group bits */
513 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
514 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
515 modbuf, strerror(errno) );
519 /* XXX: add special any uid, ignore group bits */
520 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
521 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
522 deskp->d_name, strerror(errno) );
526 if ( chdir( wd ) < 0 ) {
527 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
530 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
531 LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
538 /* uid/gid == 0 need to be handled as special cases. they really mean
539 * that user/group should inherit from other, but that doesn't fit
540 * into the unix permission scheme. we can get around this by
541 * co-opting some bits. */
542 int setdirowner( uid, gid, noadouble )
547 char buf[ MAXPATHLEN + 1];
553 if (( dir = opendir( "." )) == NULL ) {
556 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
557 if ( *dirp->d_name == '.' ) {
560 if ( stat( dirp->d_name, &st ) < 0 ) {
561 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
562 dirp->d_name, strerror(errno) );
565 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
566 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
567 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
568 dirp->d_name, strerror(errno) );
569 /* return ( -1 ); Sometimes this is okay */
574 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
576 goto setdirowner_noadouble;
579 strcpy( buf, ".AppleDouble" );
581 m = strchr( buf, '\0' );
582 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
583 if ( strcmp( dirp->d_name, "." ) == 0 ||
584 strcmp( dirp->d_name, ".." ) == 0 ) {
588 strcat( buf, dirp->d_name );
589 if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
590 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
591 uid, gid, buf, strerror(errno) );
592 /* return ( -1 ); Sometimes this is okay */
598 * We cheat: we know that chown doesn't do anything.
600 if ( stat( ".AppleDouble", &st ) < 0 ) {
601 LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
604 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
606 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
607 uid, gid, strerror(errno) );
608 /* return ( -1 ); Sometimes this is okay */
611 setdirowner_noadouble:
612 if ( stat( ".", &st ) < 0 ) {
615 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
617 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
618 uid, gid, strerror(errno) );