2 * $Id: unix.c,v 1.36 2002-08-29 18:57:26 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 );
237 int stickydirmode(name, mode, dropbox)
245 #endif /* DROPKLUDGE */
247 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
251 if (mode & S_IWOTH) {
253 else { /* if S_IWOTH and not S_IROTH */
255 if ( seteuid(0) < 0) {
256 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
258 if ( retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) ) < 0) {
259 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
260 return(AFPERR_ACCESS);
263 LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
266 } /* end getting retval */
267 } /* end if not & S_IROTH */
268 } else { /* end if S_IWOTH and not S_IROTH */
269 #endif /* DROPKLUDGE */
272 * Ignore EPERM errors: We may be dealing with a directory that is
273 * group writable, in which case chmod will fail.
275 if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
276 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",
277 name, strerror(errno) );
281 } /* end if not mode */
282 } /* end checking for "dropbox" */
283 #endif /* DROPKLUDGE */
287 int setdeskmode( mode )
290 char wd[ MAXPATHLEN + 1];
292 char modbuf[ 12 + 1], *m;
293 struct dirent *deskp, *subp;
296 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
299 if ( chdir( ".AppleDesktop" ) < 0 ) {
302 if (( desk = opendir( "." )) == NULL ) {
303 if ( chdir( wd ) < 0 ) {
304 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
308 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
309 if ( strcmp( deskp->d_name, "." ) == 0 ||
310 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
313 strcpy( modbuf, deskp->d_name );
314 strcat( modbuf, "/" );
315 m = strchr( modbuf, '\0' );
316 if (( sub = opendir( deskp->d_name )) == NULL ) {
319 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
320 if ( strcmp( subp->d_name, "." ) == 0 ||
321 strcmp( subp->d_name, ".." ) == 0 ) {
325 strcat( modbuf, subp->d_name );
326 /* XXX: need to preserve special modes */
327 if (stat(modbuf, &st) < 0) {
328 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
329 modbuf, strerror(errno) );
333 if (S_ISDIR(st.st_mode)) {
334 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
335 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
336 modbuf, strerror(errno) );
338 } else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
339 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
340 modbuf, strerror(errno) );
345 /* XXX: need to preserve special modes */
346 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
347 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
348 deskp->d_name, strerror(errno) );
352 if ( chdir( wd ) < 0 ) {
353 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
356 /* XXX: need to preserve special modes */
357 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
358 LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
363 int setfilmode(name, mode, st)
369 mode_t mask = S_IRUSR |S_IWUSR | S_IRGRP | S_IWGRP |S_IROTH | S_IWOTH;
372 if (stat(name, &sb) != 0)
376 mode &= mask; /* keep only rw-rw-rw in mode */
377 mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
378 if ( chmod( name, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
384 int setdirmode( mode, noadouble, dropbox )
389 char buf[ MAXPATHLEN + 1];
395 if (( dir = opendir( "." )) == NULL ) {
396 LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
400 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
401 if ( *dirp->d_name == '.' ) {
404 if ( stat( dirp->d_name, &st ) < 0 ) {
405 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
406 dirp->d_name, strerror(errno) );
410 if (S_ISREG(st.st_mode)) {
411 if (setfilmode(dirp->d_name, mode, &st) < 0) {
412 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",
413 dirp->d_name, strerror(errno) );
418 /* XXX: need to preserve special modes */
419 else if (S_ISDIR(st.st_mode)) {
420 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
422 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
429 /* change perm of .AppleDouble's files
431 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
433 goto setdirmode_noadouble;
434 LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
437 strcpy( buf, ".AppleDouble" );
439 m = strchr( buf, '\0' );
440 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
441 if ( strcmp( dirp->d_name, "." ) == 0 ||
442 strcmp( dirp->d_name, ".." ) == 0 ) {
446 strcat( buf, dirp->d_name );
448 if ( stat( buf, &st ) < 0 ) {
449 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
452 if (S_ISREG(st.st_mode)) {
453 if (setfilmode(dirp->d_name, ad_hf_mode(mode), &st) < 0) {
454 /* FIXME what do we do then? */
460 /* XXX: use special bits to tag directory permissions */
462 /* XXX: need to preserve special modes */
463 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
466 setdirmode_noadouble:
467 /* XXX: need to preserve special modes */
468 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
473 int setdeskowner( uid, gid )
477 char wd[ MAXPATHLEN + 1];
478 char modbuf[12 + 1], *m;
479 struct dirent *deskp, *subp;
482 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
485 if ( chdir( ".AppleDesktop" ) < 0 ) {
488 if (( desk = opendir( "." )) == NULL ) {
489 if ( chdir( wd ) < 0 ) {
490 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
494 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
495 if ( strcmp( deskp->d_name, "." ) == 0 ||
496 strcmp( deskp->d_name, ".." ) == 0 ||
497 strlen( deskp->d_name ) > 2 ) {
500 strcpy( modbuf, deskp->d_name );
501 strcat( modbuf, "/" );
502 m = strchr( modbuf, '\0' );
503 if (( sub = opendir( deskp->d_name )) == NULL ) {
506 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
507 if ( strcmp( subp->d_name, "." ) == 0 ||
508 strcmp( subp->d_name, ".." ) == 0 ) {
512 strcat( modbuf, subp->d_name );
513 /* XXX: add special any uid, ignore group bits */
514 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
515 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
516 modbuf, strerror(errno) );
520 /* XXX: add special any uid, ignore group bits */
521 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
522 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
523 deskp->d_name, strerror(errno) );
527 if ( chdir( wd ) < 0 ) {
528 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
531 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
532 LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
539 /* uid/gid == 0 need to be handled as special cases. they really mean
540 * that user/group should inherit from other, but that doesn't fit
541 * into the unix permission scheme. we can get around this by
542 * co-opting some bits. */
543 int setdirowner( uid, gid, noadouble )
548 char buf[ MAXPATHLEN + 1];
554 if (( dir = opendir( "." )) == NULL ) {
557 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
558 if ( *dirp->d_name == '.' ) {
561 if ( stat( dirp->d_name, &st ) < 0 ) {
562 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
563 dirp->d_name, strerror(errno) );
566 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
567 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
568 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
569 dirp->d_name, strerror(errno) );
570 /* return ( -1 ); Sometimes this is okay */
575 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
577 goto setdirowner_noadouble;
580 strcpy( buf, ".AppleDouble" );
582 m = strchr( buf, '\0' );
583 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
584 if ( strcmp( dirp->d_name, "." ) == 0 ||
585 strcmp( dirp->d_name, ".." ) == 0 ) {
589 strcat( buf, dirp->d_name );
590 if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
591 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
592 uid, gid, buf, strerror(errno) );
593 /* return ( -1 ); Sometimes this is okay */
599 * We cheat: we know that chown doesn't do anything.
601 if ( stat( ".AppleDouble", &st ) < 0 ) {
602 LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
605 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
607 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
608 uid, gid, strerror(errno) );
609 /* return ( -1 ); Sometimes this is okay */
612 setdirowner_noadouble:
613 if ( stat( ".", &st ) < 0 ) {
616 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
618 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
619 uid, gid, strerror(errno) );