2 * $Id: unix.c,v 1.61 2010-02-10 14:05:37 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 */
34 #include <sys/param.h>
35 #include <atalk/logger.h>
36 #include <atalk/adouble.h>
37 #include <atalk/vfs.h>
38 #include <atalk/afp.h>
39 #include <atalk/util.h>
40 #include <atalk/unix.h>
41 #include <atalk/acl.h>
44 #include "directory.h"
53 * Get the free space on a partition.
55 int ustatfs_getvolspace(const struct vol *vol, VolSpace *bfree, VolSpace *btotal, u_int32_t *bsize)
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 int utombits(mode_t bits)
109 mbits |= ( bits & ( S_IREAD >> 6 )) ? AR_UREAD : 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(struct stat *stat, struct maccess *ma)
124 mode = stat->st_mode;
125 ma->ma_world = utombits( mode );
128 ma->ma_group = utombits( mode );
131 ma->ma_owner = utombits( mode );
133 /* ma_user is a union of all permissions but we must follow
136 if ( (uuid == stat->st_uid) || (uuid == 0)) {
137 ma->ma_user = ma->ma_owner | AR_UOWN;
139 else if ( gmem( stat->st_gid )) {
140 ma->ma_user = ma->ma_group;
143 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?
152 * ditto seems to care if st_uid is 0 ?
153 * was ma->ma_user & AR_UWRITE
154 * but 0 as owner is a can of worms.
156 if ( !stat->st_uid ) {
157 ma->ma_user |= AR_UOWN;
165 * Calculate the mode for a directory using a stat() call to
166 * estimate permission.
168 * Note: the previous method, using access(), does not work correctly
171 * dir parameter is used by AFS
173 void accessmode(char *path, struct maccess *ma, struct dir *dir _U_, struct stat *st)
177 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
179 if (lstat(path, &sb) != 0)
185 /* 10.5 Finder looks at OS 9 mode, so we must do some mapping */
186 acltoownermode( path, st, uuid, ma);
190 int gmem(const gid_t gid)
194 for ( i = 0; i < ngroups; i++ ) {
195 if ( groups[ i ] == gid ) {
202 static mode_t mtoubits(u_char bits)
208 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
209 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
210 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
211 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
216 /* ----------------------------------
217 from the finder's share windows (menu--> File--> sharing...)
218 and from AFP 3.0 spec page 63
219 the mac mode should be save somewhere
221 mode_t mtoumode(struct maccess *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 #define EXEC_MODE (S_IXGRP | S_IXUSR | S_IXOTH)
239 int setdeskmode(const mode_t mode)
241 char wd[ MAXPATHLEN + 1];
243 char modbuf[ 12 + 1], *m;
244 struct dirent *deskp, *subp;
247 if (!dir_rx_set(mode)) {
248 /* want to remove read and search access to owner it will screw the volume */
251 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
254 if ( chdir( ".AppleDesktop" ) < 0 ) {
257 if (( desk = opendir( "." )) == NULL ) {
258 if ( chdir( wd ) < 0 ) {
259 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
263 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
264 if ( strcmp( deskp->d_name, "." ) == 0 ||
265 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
268 strcpy( modbuf, deskp->d_name );
269 strcat( modbuf, "/" );
270 m = strchr( modbuf, '\0' );
271 if (( sub = opendir( deskp->d_name )) == NULL ) {
274 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
275 if ( strcmp( subp->d_name, "." ) == 0 ||
276 strcmp( subp->d_name, ".." ) == 0 ) {
280 strcat( modbuf, subp->d_name );
281 /* XXX: need to preserve special modes */
282 if (lstat(modbuf, &st) < 0) {
283 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",fullpathname(modbuf), strerror(errno) );
287 if (S_ISDIR(st.st_mode)) {
288 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
289 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
291 } else if ( chmod( modbuf, mode & ~(default_options.umask | EXEC_MODE) ) < 0 && errno != EPERM ) {
292 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
297 /* XXX: need to preserve special modes */
298 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
299 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(deskp->d_name), strerror(errno) );
303 if ( chdir( wd ) < 0 ) {
304 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
307 /* XXX: need to preserve special modes */
308 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
309 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s", fullpathname(".AppleDesktop"),strerror(errno) );
314 /* --------------------- */
315 int setfilunixmode (const struct vol *vol, struct path* path, mode_t mode)
317 if (!path->st_valid) {
321 if (path->st_errno) {
325 mode |= vol->v_fperm;
327 if (setfilmode( path->u_name, mode, &path->st, vol->v_umask) < 0)
329 /* we need to set write perm if read set for resource fork */
330 return vol->vfs->vfs_setfilmode(vol, path->u_name, mode, &path->st);
334 /* --------------------- */
335 int setdirunixmode(const struct vol *vol, const char *name, mode_t mode)
338 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
340 LOG(log_debug, logtype_afpd, "setdirunixmode('%s', mode:%04o) {v_dperm:%04o}",
341 fullpathname(name), mode, vol->v_dperm);
343 mode |= vol->v_dperm;
345 if (dir_rx_set(mode)) {
346 /* extending right? dir first then .AppleDouble in rf_setdirmode */
347 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
350 if (vol->vfs->vfs_setdirunixmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
353 if (!dir_rx_set(mode)) {
354 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
360 /* --------------------- */
361 int setdirmode(const struct vol *vol, const char *name, mode_t mode)
367 int osx = vol->v_adouble == AD_VERSION2_OSX;
368 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
370 mode |= vol->v_dperm;
371 hf_mode = ad_hf_mode(mode);
373 if (dir_rx_set(mode)) {
374 /* extending right? dir first */
375 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
379 if (( dir = opendir( name )) == NULL ) {
380 LOG(log_error, logtype_afpd, "setdirmode: opendir: %s", fullpathname(name), strerror(errno) );
384 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
386 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
389 if ( lstat( dirp->d_name, &st ) < 0 ) {
390 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",dirp->d_name, strerror(errno) );
394 if (!S_ISDIR(st.st_mode)) {
395 int setmode = (osx && *dirp->d_name == '.')?hf_mode:mode;
397 if (setfilmode(dirp->d_name, setmode, &st, vol->v_umask) < 0) {
398 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",dirp->d_name, strerror(errno) );
405 if (vol->vfs->vfs_setdirmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
409 if (!dir_rx_set(mode)) {
410 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
416 /* ----------------------------- */
417 int setdeskowner(const uid_t uid, const gid_t gid)
419 char wd[ MAXPATHLEN + 1];
420 char modbuf[12 + 1], *m;
421 struct dirent *deskp, *subp;
424 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
427 if ( chdir( ".AppleDesktop" ) < 0 ) {
430 if (( desk = opendir( "." )) == NULL ) {
431 if ( chdir( wd ) < 0 ) {
432 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
436 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
437 if ( strcmp( deskp->d_name, "." ) == 0 ||
438 strcmp( deskp->d_name, ".." ) == 0 ||
439 strlen( deskp->d_name ) > 2 ) {
442 strcpy( modbuf, deskp->d_name );
443 strcat( modbuf, "/" );
444 m = strchr( modbuf, '\0' );
445 if (( sub = opendir( deskp->d_name )) == NULL ) {
448 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
449 if ( strcmp( subp->d_name, "." ) == 0 ||
450 strcmp( subp->d_name, ".." ) == 0 ) {
454 strcat( modbuf, subp->d_name );
455 /* XXX: add special any uid, ignore group bits */
456 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
457 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s", fullpathname(modbuf), strerror(errno) );
461 /* XXX: add special any uid, ignore group bits */
462 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
463 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
464 deskp->d_name, strerror(errno) );
468 if ( chdir( wd ) < 0 ) {
469 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
472 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
473 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s", fullpathname(".AppleDouble"), strerror(errno) );
478 /* ----------------------------- */
479 int setfilowner(const struct vol *vol, const uid_t uid, const gid_t gid, struct path* path)
482 if (!path->st_valid) {
486 if (path->st_errno) {
490 if ( lchown( path->u_name, uid, gid ) < 0 && errno != EPERM ) {
491 LOG(log_debug, logtype_afpd, "setfilowner: chown %d/%d %s: %s",
492 uid, gid, path->u_name, strerror(errno) );
496 if (vol->vfs->vfs_chown(vol, path->u_name, uid, gid ) < 0 && errno != EPERM) {
497 LOG(log_debug, logtype_afpd, "setfilowner: rf_chown %d/%d %s: %s",
498 uid, gid, path->u_name, strerror(errno) );
505 /* ---------------------------------
506 * uid/gid == 0 need to be handled as special cases. they really mean
507 * that user/group should inherit from other, but that doesn't fit
508 * into the unix permission scheme. we can get around this by
509 * co-opting some bits. */
510 int setdirowner(const struct vol *vol, const char *name, const uid_t uid, const gid_t gid)
515 int osx = vol->v_adouble == AD_VERSION2_OSX;
517 if (( dir = opendir( name )) == NULL ) {
520 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
521 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
524 if ( lstat( dirp->d_name, &st ) < 0 ) {
525 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
526 fullpathname(dirp->d_name), strerror(errno) );
529 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
530 if ( lchown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
531 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
532 fullpathname(dirp->d_name), strerror(errno) );
533 /* return ( -1 ); Sometimes this is okay */
539 if (vol->vfs->vfs_setdirowner(vol, name, uid, gid) < 0) {
543 if ( lstat( ".", &st ) < 0 ) {
546 if ( gid && gid != st.st_gid && lchown( ".", uid, gid ) < 0 && errno != EPERM ) {
547 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
548 uid, gid, fullpathname("."), strerror(errno) );
555 /* recursive chown()ing of a directory */
556 static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
559 struct dirent *entry;
562 char newpath[PATH_MAX+1];
563 newpath[PATH_MAX] = '\0';
565 if (chown(path, uid, gid) < 0) {
566 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
570 if (lstat(path, &sbuf) < 0) {
571 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
575 if (S_ISDIR(sbuf.st_mode)) {
576 odir = opendir(path);
578 LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s", path, uid, strerror(errno));
579 goto recursive_chown_end;
581 while (NULL != (entry=readdir(odir)) ) {
582 name = entry->d_name;
583 if (name[0] == '.' && name[1] == '\0')
585 if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
587 sprintf(newpath, "%s/%s", path, name);
588 if (recursive_chown(newpath, uid, gid) < 0)