2 * $Id: unix.c,v 1.53 2009-10-02 09:32:40 franklahm Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
18 #else /* STDC_HEADERS */
23 #endif /* HAVE_STRCHR */
24 char *strchr (), *strrchr ();
27 #define memcpy(d,s,n) bcopy ((s), (d), (n))
28 #define memmove(d,s,n) bcopy ((s), (d), (n))
29 #endif /* ! HAVE_MEMCPY */
30 #endif /* STDC_HEADERS */
35 #include <sys/param.h>
37 #include <atalk/logger.h>
38 #include <atalk/adouble.h>
39 #include <atalk/vfs.h>
40 #include <atalk/afp.h>
41 #include <atalk/util.h>
44 #include "directory.h"
49 #ifdef HAVE_NFSv4_ACLS
50 extern void acltoownermode(char *path, struct stat *st,uid_t uid, struct maccess *ma);
55 * Get the free space on a partition.
57 int ustatfs_getvolspace( vol, bfree, btotal, bsize )
58 const struct vol *vol;
59 VolSpace *bfree, *btotal;
62 VolSpace maxVolSpace = (~(VolSpace)0);
71 if ( statfs( vol->v_path, &sfs ) < 0 ) {
72 LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
73 return( AFPERR_PARAM );
77 *bfree = (VolSpace) sfs.fd_req.bfreen;
80 *bfree = (VolSpace) sfs.f_bavail;
81 *bsize = sfs.f_frsize;
84 if ( *bfree > maxVolSpace / *bsize ) {
92 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
95 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
98 /* see similar block above comments */
99 if ( *btotal > maxVolSpace / *bsize ) {
100 *btotal = maxVolSpace;
108 static int utombits( bits )
115 mbits |= ( bits & ( S_IREAD >> 6 )) ? AR_UREAD : 0;
116 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
117 /* Do we really need this? */
118 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0;
123 /* --------------------------------
126 void utommode( stat, ma )
132 mode = stat->st_mode;
133 ma->ma_world = utombits( mode );
136 ma->ma_group = utombits( mode );
139 ma->ma_owner = utombits( mode );
141 /* ma_user is a union of all permissions but we must follow
144 if ( (uuid == stat->st_uid) || (uuid == 0)) {
145 ma->ma_user = ma->ma_owner | AR_UOWN;
147 else if ( gmem( stat->st_gid )) {
148 ma->ma_user = ma->ma_group;
151 ma->ma_user = ma->ma_world;
155 * There are certain things the mac won't try if you don't have
156 * the "owner" bit set, even tho you can do these things on unix wiht
157 * only write permission. What were the things?
160 * ditto seems to care if st_uid is 0 ?
161 * was ma->ma_user & AR_UWRITE
162 * but 0 as owner is a can of worms.
164 if ( !stat->st_uid ) {
165 ma->ma_user |= AR_UOWN;
173 * Calculate the mode for a directory using a stat() call to
174 * estimate permission.
176 * Note: the previous method, using access(), does not work correctly
179 * dir parameter is used by AFS
181 void accessmode( path, ma, dir, st )
190 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
192 if (stat(path, &sb) != 0)
197 #ifdef HAVE_NFSv4_ACLS
198 /* 10.5 Finder looks at OS 9 mode, so we must do some mapping */
199 acltoownermode( path, st, uuid, ma);
208 for ( i = 0; i < ngroups; i++ ) {
209 if ( groups[ i ] == gid ) {
216 static mode_t mtoubits( bits )
223 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
224 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
225 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
226 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
231 /* ----------------------------------
232 from the finder's share windows (menu--> File--> sharing...)
233 and from AFP 3.0 spec page 63
234 the mac mode should be save somewhere
236 mode_t mtoumode( ma )
242 mode |= mtoubits( ma->ma_owner |ma->ma_world);
245 mode |= mtoubits( ma->ma_group |ma->ma_world);
248 mode |= mtoubits( ma->ma_world );
253 #define EXEC_MODE (S_IXGRP | S_IXUSR | S_IXOTH)
255 int setdeskmode( mode )
258 char wd[ MAXPATHLEN + 1];
260 char modbuf[ 12 + 1], *m;
261 struct dirent *deskp, *subp;
264 if (!dir_rx_set(mode)) {
265 /* want to remove read and search access to owner it will screw the volume */
268 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
271 if ( chdir( ".AppleDesktop" ) < 0 ) {
274 if (( desk = opendir( "." )) == NULL ) {
275 if ( chdir( wd ) < 0 ) {
276 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
280 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
281 if ( strcmp( deskp->d_name, "." ) == 0 ||
282 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
285 strcpy( modbuf, deskp->d_name );
286 strcat( modbuf, "/" );
287 m = strchr( modbuf, '\0' );
288 if (( sub = opendir( deskp->d_name )) == NULL ) {
291 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
292 if ( strcmp( subp->d_name, "." ) == 0 ||
293 strcmp( subp->d_name, ".." ) == 0 ) {
297 strcat( modbuf, subp->d_name );
298 /* XXX: need to preserve special modes */
299 if (stat(modbuf, &st) < 0) {
300 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",fullpathname(modbuf), strerror(errno) );
304 if (S_ISDIR(st.st_mode)) {
305 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
306 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
308 } else if ( chmod( modbuf, mode & ~(default_options.umask | EXEC_MODE) ) < 0 && errno != EPERM ) {
309 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
314 /* XXX: need to preserve special modes */
315 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
316 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(deskp->d_name), strerror(errno) );
320 if ( chdir( wd ) < 0 ) {
321 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
324 /* XXX: need to preserve special modes */
325 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
326 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s", fullpathname(".AppleDesktop"),strerror(errno) );
331 /* --------------------- */
332 int setfilunixmode (vol, path, mode)
333 const struct vol *vol;
337 if (!path->st_valid) {
341 if (path->st_errno) {
345 mode |= vol->v_fperm;
347 if (setfilmode( path->u_name, mode, &path->st, vol->v_umask) < 0)
349 /* we need to set write perm if read set for resource fork */
350 return vol->vfs->rf_setfilmode(vol, path->u_name, mode, &path->st);
354 /* --------------------- */
355 int setdirunixmode( vol, name, mode )
356 const struct vol *vol;
361 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
362 mode |= vol->v_dperm;
364 if (dir_rx_set(mode)) {
365 /* extending right? dir first then .AppleDouble in rf_setdirmode */
366 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
369 if (vol->vfs->rf_setdirunixmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
372 if (!dir_rx_set(mode)) {
373 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
379 /* --------------------- */
380 int setdirmode( vol, name, mode )
381 const struct vol *vol;
389 int osx = vol->v_adouble == AD_VERSION2_OSX;
390 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
392 mode |= vol->v_dperm;
393 hf_mode = ad_hf_mode(mode);
395 if (dir_rx_set(mode)) {
396 /* extending right? dir first */
397 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
401 if (( dir = opendir( name )) == NULL ) {
402 LOG(log_error, logtype_afpd, "setdirmode: opendir: %s", fullpathname(name), strerror(errno) );
406 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
408 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
411 if ( stat( dirp->d_name, &st ) < 0 ) {
412 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",dirp->d_name, strerror(errno) );
416 if (!S_ISDIR(st.st_mode)) {
417 int setmode = (osx && *dirp->d_name == '.')?hf_mode:mode;
419 if (setfilmode(dirp->d_name, setmode, &st, vol->v_umask) < 0) {
420 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",dirp->d_name, strerror(errno) );
427 if (vol->vfs->rf_setdirmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
431 if (!dir_rx_set(mode)) {
432 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
438 /* ----------------------------- */
439 int setdeskowner( uid, gid )
443 char wd[ MAXPATHLEN + 1];
444 char modbuf[12 + 1], *m;
445 struct dirent *deskp, *subp;
448 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
451 if ( chdir( ".AppleDesktop" ) < 0 ) {
454 if (( desk = opendir( "." )) == NULL ) {
455 if ( chdir( wd ) < 0 ) {
456 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
460 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
461 if ( strcmp( deskp->d_name, "." ) == 0 ||
462 strcmp( deskp->d_name, ".." ) == 0 ||
463 strlen( deskp->d_name ) > 2 ) {
466 strcpy( modbuf, deskp->d_name );
467 strcat( modbuf, "/" );
468 m = strchr( modbuf, '\0' );
469 if (( sub = opendir( deskp->d_name )) == NULL ) {
472 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
473 if ( strcmp( subp->d_name, "." ) == 0 ||
474 strcmp( subp->d_name, ".." ) == 0 ) {
478 strcat( modbuf, subp->d_name );
479 /* XXX: add special any uid, ignore group bits */
480 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
481 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s", fullpathname(modbuf), strerror(errno) );
485 /* XXX: add special any uid, ignore group bits */
486 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
487 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
488 deskp->d_name, strerror(errno) );
492 if ( chdir( wd ) < 0 ) {
493 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
496 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
497 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s", fullpathname(".AppleDouble"), strerror(errno) );
502 /* ----------------------------- */
503 int setfilowner(vol, uid, gid, path)
504 const struct vol *vol;
510 if (!path->st_valid) {
514 if (path->st_errno) {
518 if ( chown( path->u_name, uid, gid ) < 0 && errno != EPERM ) {
519 LOG(log_debug, logtype_afpd, "setfilowner: chown %d/%d %s: %s",
520 uid, gid, path->u_name, strerror(errno) );
524 if (vol->vfs->rf_chown(vol, path->u_name, uid, gid ) < 0 && errno != EPERM) {
525 LOG(log_debug, logtype_afpd, "setfilowner: rf_chown %d/%d %s: %s",
526 uid, gid, path->u_name, strerror(errno) );
533 /* ---------------------------------
534 * uid/gid == 0 need to be handled as special cases. they really mean
535 * that user/group should inherit from other, but that doesn't fit
536 * into the unix permission scheme. we can get around this by
537 * co-opting some bits. */
538 int setdirowner(vol, name, uid, gid )
539 const struct vol *vol;
547 int osx = vol->v_adouble == AD_VERSION2_OSX;
549 if (( dir = opendir( name )) == NULL ) {
552 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
553 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
556 if ( stat( dirp->d_name, &st ) < 0 ) {
557 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
558 fullpathname(dirp->d_name), strerror(errno) );
561 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
562 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
563 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
564 fullpathname(dirp->d_name), strerror(errno) );
565 /* return ( -1 ); Sometimes this is okay */
571 if (vol->vfs->rf_setdirowner(vol, name, uid, gid) < 0) {
575 if ( stat( ".", &st ) < 0 ) {
578 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 && errno != EPERM ) {
579 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
580 uid, gid, fullpathname("."), strerror(errno) );
587 /* recursive chown()ing of a directory */
588 static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
591 struct dirent *entry;
594 char newpath[PATH_MAX+1];
595 newpath[PATH_MAX] = '\0';
597 if (chown(path, uid, gid) < 0) {
598 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
602 if (stat(path, &sbuf) < 0) {
603 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
607 if (S_ISDIR(sbuf.st_mode)) {
608 odir = opendir(path);
610 LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s", path, uid, strerror(errno));
611 goto recursive_chown_end;
613 while (NULL != (entry=readdir(odir)) ) {
614 name = entry->d_name;
615 if (name[0] == '.' && name[1] == '\0')
617 if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
619 sprintf(newpath, "%s/%s", path, name);
620 if (recursive_chown(newpath, uid, gid) < 0)
633 /* This is equivalent of unix rename(). */
634 int unix_rename(const char *oldpath, const char *newpath)
637 char pd_name[PATH_MAX+1];
643 if (rename(oldpath, newpath) < 0)
646 for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
647 pd_name[i] = newpath[i];
650 while (i > 0 && pd_name[i] != '/') i--;
651 if (pd_name[i] == '/') i++;
653 pd_name[i++] = '.'; pd_name[i++] = '\0';
655 if (stat(pd_name, &pd_stat) < 0) {
656 LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s",
657 pd_name, geteuid(), strerror(errno));
661 /* So we have SGID bit set... */
662 if ((S_ISGID & pd_stat.st_mode) != 0) {
665 LOG(log_error, logtype_afpd, "seteuid() failed: %s", strerror(errno));
666 if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
667 LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s",
668 pd_name, geteuid(), strerror(errno));