2 * $Id: unix.c,v 1.34 2002-05-10 21:35:41 jmarcus 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/afp.h>
28 #else /* STDC_HEADERS */
32 #endif /* HAVE_STRCHR */
33 char *strchr (), *strrchr ();
35 #define memcpy(d,s,n) bcopy ((s), (d), (n))
36 #define memmove(d,s,n) bcopy ((s), (d), (n))
37 #endif /* ! HAVE_MEMCPY */
38 #endif /* STDC_HEADERS */
42 #endif /* HAVE_FCNTL_H */
44 #include "directory.h"
49 * Get the free space on a partition.
51 int ustatfs_getvolspace( vol, bfree, btotal, bsize )
52 const struct vol *vol;
53 VolSpace *bfree, *btotal;
56 VolSpace maxVolSpace = (~(VolSpace)0);
65 if ( statfs( vol->v_path, &sfs ) < 0 ) {
66 LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
67 return( AFPERR_PARAM );
71 *bfree = (VolSpace) sfs.fd_req.bfreen;
74 *bfree = (VolSpace) sfs.f_bavail;
75 *bsize = sfs.f_frsize;
78 if ( *bfree > maxVolSpace / *bsize ) {
86 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
89 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
92 /* see similar block above comments */
93 if ( *btotal > maxVolSpace / *bsize ) {
94 *btotal = maxVolSpace;
102 static __inline__ int utombits( bits )
109 mbits |= ( bits & ( S_IREAD >> 6 )) ? (AR_UREAD | AR_USEARCH) : 0;
110 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
111 /* Do we really need this?
112 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0; */
117 /* --------------------------------
120 void utommode( stat, ma )
126 mode = stat->st_mode;
128 ma->ma_world = utombits( mode );
131 ma->ma_group = utombits( mode );
134 ma->ma_owner = utombits( mode );
136 if ( (uuid == stat->st_uid) || (uuid == 0)) {
137 ma->ma_user = ma->ma_owner | AR_UOWN;
138 } else if ( gmem( stat->st_gid )) {
139 ma->ma_user = ma->ma_group;
141 ma->ma_user = ma->ma_world;
145 * There are certain things the mac won't try if you don't have
146 * the "owner" bit set, even tho you can do these things on unix wiht
147 * only write permission. What were the things?
149 * FIXME and so what ?
152 if ( ma->ma_user & AR_UWRITE ) {
153 ma->ma_user |= AR_UOWN;
160 * Calculate the mode for a directory using a stat() call to
161 * estimate permission.
163 * Note: the previous method, using access(), does not work correctly
166 void accessmode( path, ma, dir )
172 ma->ma_user = ma->ma_owner = 0;
173 if ( stat( path, &sb ) == 0 )
183 for ( i = 0; i < ngroups; i++ ) {
184 if ( groups[ i ] == gid ) {
191 static __inline__ mode_t mtoubits( bits )
198 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
199 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
200 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
201 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
206 /* ----------------------------------
207 from the finder's share windows (menu--> File--> sharing...)
208 and from AFP 3.0 spec page 63
209 the mac mode should be save somewhere
211 mode_t mtoumode( ma )
217 mode |= mtoubits( ma->ma_owner |ma->ma_world);
220 mode |= mtoubits( ma->ma_group |ma->ma_world);
223 mode |= mtoubits( ma->ma_world );
228 int stickydirmode(name, mode, dropbox)
236 #endif /* DROPKLUDGE */
238 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
242 if (mode & S_IWOTH) {
244 else { /* if S_IWOTH and not S_IROTH */
246 if ( seteuid(0) < 0) {
247 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
249 if ( retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) ) < 0) {
250 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
251 return(AFPERR_ACCESS);
254 LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
257 } /* end getting retval */
258 } /* end if not & S_IROTH */
259 } else { /* end if S_IWOTH and not S_IROTH */
260 #endif /* DROPKLUDGE */
263 * Ignore EPERM errors: We may be dealing with a directory that is
264 * group writable, in which case chmod will fail.
266 if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
267 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",
268 name, strerror(errno) );
272 } /* end if not mode */
273 } /* end checking for "dropbox" */
274 #endif /* DROPKLUDGE */
278 int setdeskmode( mode )
281 char wd[ MAXPATHLEN + 1];
283 char modbuf[ 12 + 1], *m;
284 struct dirent *deskp, *subp;
287 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
290 if ( chdir( ".AppleDesktop" ) < 0 ) {
293 if (( desk = opendir( "." )) == NULL ) {
294 if ( chdir( wd ) < 0 ) {
295 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
299 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
300 if ( strcmp( deskp->d_name, "." ) == 0 ||
301 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
304 strcpy( modbuf, deskp->d_name );
305 strcat( modbuf, "/" );
306 m = strchr( modbuf, '\0' );
307 if (( sub = opendir( deskp->d_name )) == NULL ) {
310 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
311 if ( strcmp( subp->d_name, "." ) == 0 ||
312 strcmp( subp->d_name, ".." ) == 0 ) {
316 strcat( modbuf, subp->d_name );
317 /* XXX: need to preserve special modes */
318 if (stat(modbuf, &st) < 0) {
319 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
320 modbuf, strerror(errno) );
324 if (S_ISDIR(st.st_mode)) {
325 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
326 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
327 modbuf, strerror(errno) );
329 } else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
330 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
331 modbuf, strerror(errno) );
336 /* XXX: need to preserve special modes */
337 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
338 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
339 deskp->d_name, strerror(errno) );
343 if ( chdir( wd ) < 0 ) {
344 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
347 /* XXX: need to preserve special modes */
348 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
349 LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
354 int setdirmode( mode, noadouble, dropbox )
359 char buf[ MAXPATHLEN + 1];
365 if (( dir = opendir( "." )) == NULL ) {
366 LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
370 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
371 if ( *dirp->d_name == '.' ) {
374 if ( stat( dirp->d_name, &st ) < 0 ) {
375 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
376 dirp->d_name, strerror(errno) );
380 if (S_ISREG(st.st_mode)) {
381 /* XXX: need to preserve special modes */
382 if (S_ISDIR(st.st_mode)) {
383 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
385 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
390 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
392 goto setdirmode_noadouble;
393 LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
396 strcpy( buf, ".AppleDouble" );
398 m = strchr( buf, '\0' );
399 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
400 if ( strcmp( dirp->d_name, "." ) == 0 ||
401 strcmp( dirp->d_name, ".." ) == 0 ) {
405 strcat( buf, dirp->d_name );
407 if ( stat( buf, &st ) < 0 ) {
408 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
412 if (S_ISDIR(st.st_mode)) {
413 stickydirmode( buf, DIRBITS | mode, dropbox );
415 stickydirmode( buf, mode, dropbox );
419 /* XXX: use special bits to tag directory permissions */
421 /* XXX: need to preserve special modes */
422 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
425 setdirmode_noadouble:
426 /* XXX: need to preserve special modes */
427 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
432 int setdeskowner( uid, gid )
436 char wd[ MAXPATHLEN + 1];
437 char modbuf[12 + 1], *m;
438 struct dirent *deskp, *subp;
441 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
444 if ( chdir( ".AppleDesktop" ) < 0 ) {
447 if (( desk = opendir( "." )) == NULL ) {
448 if ( chdir( wd ) < 0 ) {
449 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
453 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
454 if ( strcmp( deskp->d_name, "." ) == 0 ||
455 strcmp( deskp->d_name, ".." ) == 0 ||
456 strlen( deskp->d_name ) > 2 ) {
459 strcpy( modbuf, deskp->d_name );
460 strcat( modbuf, "/" );
461 m = strchr( modbuf, '\0' );
462 if (( sub = opendir( deskp->d_name )) == NULL ) {
465 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
466 if ( strcmp( subp->d_name, "." ) == 0 ||
467 strcmp( subp->d_name, ".." ) == 0 ) {
471 strcat( modbuf, subp->d_name );
472 /* XXX: add special any uid, ignore group bits */
473 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
474 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
475 modbuf, strerror(errno) );
479 /* XXX: add special any uid, ignore group bits */
480 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
481 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
482 deskp->d_name, strerror(errno) );
486 if ( chdir( wd ) < 0 ) {
487 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
490 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
491 LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
498 /* uid/gid == 0 need to be handled as special cases. they really mean
499 * that user/group should inherit from other, but that doesn't fit
500 * into the unix permission scheme. we can get around this by
501 * co-opting some bits. */
502 int setdirowner( uid, gid, noadouble )
507 char buf[ MAXPATHLEN + 1];
513 if (( dir = opendir( "." )) == NULL ) {
516 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
517 if ( *dirp->d_name == '.' ) {
520 if ( stat( dirp->d_name, &st ) < 0 ) {
521 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
522 dirp->d_name, strerror(errno) );
525 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
526 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
527 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
528 dirp->d_name, strerror(errno) );
529 /* return ( -1 ); Sometimes this is okay */
534 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
536 goto setdirowner_noadouble;
539 strcpy( buf, ".AppleDouble" );
541 m = strchr( buf, '\0' );
542 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
543 if ( strcmp( dirp->d_name, "." ) == 0 ||
544 strcmp( dirp->d_name, ".." ) == 0 ) {
548 strcat( buf, dirp->d_name );
549 if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
550 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
551 uid, gid, buf, strerror(errno) );
552 /* return ( -1 ); Sometimes this is okay */
558 * We cheat: we know that chown doesn't do anything.
560 if ( stat( ".AppleDouble", &st ) < 0 ) {
561 LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
564 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
566 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
567 uid, gid, strerror(errno) );
568 /* return ( -1 ); Sometimes this is okay */
571 setdirowner_noadouble:
572 if ( stat( ".", &st ) < 0 ) {
575 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
577 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
578 uid, gid, strerror(errno) );