2 * $Id: unix.c,v 1.35 2002-06-06 10:14:26 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/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 /* 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 )
174 ma->ma_user = ma->ma_owner = 0;
175 if ( stat( path, &sb ) == 0 )
185 for ( i = 0; i < ngroups; i++ ) {
186 if ( groups[ i ] == gid ) {
193 static __inline__ mode_t mtoubits( bits )
200 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
201 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
202 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
203 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
208 /* ----------------------------------
209 from the finder's share windows (menu--> File--> sharing...)
210 and from AFP 3.0 spec page 63
211 the mac mode should be save somewhere
213 mode_t mtoumode( ma )
219 mode |= mtoubits( ma->ma_owner |ma->ma_world);
222 mode |= mtoubits( ma->ma_group |ma->ma_world);
225 mode |= mtoubits( ma->ma_world );
230 int stickydirmode(name, mode, dropbox)
238 #endif /* DROPKLUDGE */
240 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
244 if (mode & S_IWOTH) {
246 else { /* if S_IWOTH and not S_IROTH */
248 if ( seteuid(0) < 0) {
249 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
251 if ( retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) ) < 0) {
252 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
253 return(AFPERR_ACCESS);
256 LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
259 } /* end getting retval */
260 } /* end if not & S_IROTH */
261 } else { /* end if S_IWOTH and not S_IROTH */
262 #endif /* DROPKLUDGE */
265 * Ignore EPERM errors: We may be dealing with a directory that is
266 * group writable, in which case chmod will fail.
268 if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
269 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",
270 name, strerror(errno) );
274 } /* end if not mode */
275 } /* end checking for "dropbox" */
276 #endif /* DROPKLUDGE */
280 int setdeskmode( mode )
283 char wd[ MAXPATHLEN + 1];
285 char modbuf[ 12 + 1], *m;
286 struct dirent *deskp, *subp;
289 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
292 if ( chdir( ".AppleDesktop" ) < 0 ) {
295 if (( desk = opendir( "." )) == NULL ) {
296 if ( chdir( wd ) < 0 ) {
297 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
301 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
302 if ( strcmp( deskp->d_name, "." ) == 0 ||
303 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
306 strcpy( modbuf, deskp->d_name );
307 strcat( modbuf, "/" );
308 m = strchr( modbuf, '\0' );
309 if (( sub = opendir( deskp->d_name )) == NULL ) {
312 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
313 if ( strcmp( subp->d_name, "." ) == 0 ||
314 strcmp( subp->d_name, ".." ) == 0 ) {
318 strcat( modbuf, subp->d_name );
319 /* XXX: need to preserve special modes */
320 if (stat(modbuf, &st) < 0) {
321 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
322 modbuf, strerror(errno) );
326 if (S_ISDIR(st.st_mode)) {
327 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
328 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
329 modbuf, strerror(errno) );
331 } else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
332 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
333 modbuf, strerror(errno) );
338 /* XXX: need to preserve special modes */
339 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
340 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
341 deskp->d_name, strerror(errno) );
345 if ( chdir( wd ) < 0 ) {
346 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
349 /* XXX: need to preserve special modes */
350 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
351 LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
356 int setdirmode( mode, noadouble, dropbox )
361 char buf[ MAXPATHLEN + 1];
367 if (( dir = opendir( "." )) == NULL ) {
368 LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
372 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
373 if ( *dirp->d_name == '.' ) {
376 if ( stat( dirp->d_name, &st ) < 0 ) {
377 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
378 dirp->d_name, strerror(errno) );
382 if (S_ISREG(st.st_mode)) {
383 /* XXX: need to preserve special modes */
384 if (S_ISDIR(st.st_mode)) {
385 if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
387 } else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
392 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
394 goto setdirmode_noadouble;
395 LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
398 strcpy( buf, ".AppleDouble" );
400 m = strchr( buf, '\0' );
401 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
402 if ( strcmp( dirp->d_name, "." ) == 0 ||
403 strcmp( dirp->d_name, ".." ) == 0 ) {
407 strcat( buf, dirp->d_name );
409 if ( stat( buf, &st ) < 0 ) {
410 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
414 if (S_ISDIR(st.st_mode)) {
415 stickydirmode( buf, DIRBITS | mode, dropbox );
417 stickydirmode( buf, mode, dropbox );
421 /* XXX: use special bits to tag directory permissions */
423 /* XXX: need to preserve special modes */
424 if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
427 setdirmode_noadouble:
428 /* XXX: need to preserve special modes */
429 if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
434 int setdeskowner( uid, gid )
438 char wd[ MAXPATHLEN + 1];
439 char modbuf[12 + 1], *m;
440 struct dirent *deskp, *subp;
443 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
446 if ( chdir( ".AppleDesktop" ) < 0 ) {
449 if (( desk = opendir( "." )) == NULL ) {
450 if ( chdir( wd ) < 0 ) {
451 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
455 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
456 if ( strcmp( deskp->d_name, "." ) == 0 ||
457 strcmp( deskp->d_name, ".." ) == 0 ||
458 strlen( deskp->d_name ) > 2 ) {
461 strcpy( modbuf, deskp->d_name );
462 strcat( modbuf, "/" );
463 m = strchr( modbuf, '\0' );
464 if (( sub = opendir( deskp->d_name )) == NULL ) {
467 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
468 if ( strcmp( subp->d_name, "." ) == 0 ||
469 strcmp( subp->d_name, ".." ) == 0 ) {
473 strcat( modbuf, subp->d_name );
474 /* XXX: add special any uid, ignore group bits */
475 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
476 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
477 modbuf, strerror(errno) );
481 /* XXX: add special any uid, ignore group bits */
482 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
483 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
484 deskp->d_name, strerror(errno) );
488 if ( chdir( wd ) < 0 ) {
489 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
492 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
493 LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
500 /* uid/gid == 0 need to be handled as special cases. they really mean
501 * that user/group should inherit from other, but that doesn't fit
502 * into the unix permission scheme. we can get around this by
503 * co-opting some bits. */
504 int setdirowner( uid, gid, noadouble )
509 char buf[ MAXPATHLEN + 1];
515 if (( dir = opendir( "." )) == NULL ) {
518 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
519 if ( *dirp->d_name == '.' ) {
522 if ( stat( dirp->d_name, &st ) < 0 ) {
523 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
524 dirp->d_name, strerror(errno) );
527 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
528 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
529 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
530 dirp->d_name, strerror(errno) );
531 /* return ( -1 ); Sometimes this is okay */
536 if (( dir = opendir( ".AppleDouble" )) == NULL ) {
538 goto setdirowner_noadouble;
541 strcpy( buf, ".AppleDouble" );
543 m = strchr( buf, '\0' );
544 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
545 if ( strcmp( dirp->d_name, "." ) == 0 ||
546 strcmp( dirp->d_name, ".." ) == 0 ) {
550 strcat( buf, dirp->d_name );
551 if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
552 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
553 uid, gid, buf, strerror(errno) );
554 /* return ( -1 ); Sometimes this is okay */
560 * We cheat: we know that chown doesn't do anything.
562 if ( stat( ".AppleDouble", &st ) < 0 ) {
563 LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
566 if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
568 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
569 uid, gid, strerror(errno) );
570 /* return ( -1 ); Sometimes this is okay */
573 setdirowner_noadouble:
574 if ( stat( ".", &st ) < 0 ) {
577 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
579 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
580 uid, gid, strerror(errno) );