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>
43 #include "directory.h"
48 #ifdef HAVE_NFSv4_ACLS
49 extern void acltoownermode(char *path, struct stat *st,uid_t uid, struct maccess *ma);
54 * Get the free space on a partition.
56 int ustatfs_getvolspace(const struct vol *vol, VolSpace *bfree, VolSpace *btotal, u_int32_t *bsize)
58 VolSpace maxVolSpace = (~(VolSpace)0);
67 if ( statfs( vol->v_path, &sfs ) < 0 ) {
68 LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
69 return( AFPERR_PARAM );
73 *bfree = (VolSpace) sfs.fd_req.bfreen;
76 *bfree = (VolSpace) sfs.f_bavail;
77 *bsize = sfs.f_frsize;
80 if ( *bfree > maxVolSpace / *bsize ) {
88 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
91 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
94 /* see similar block above comments */
95 if ( *btotal > maxVolSpace / *bsize ) {
96 *btotal = maxVolSpace;
104 static int utombits(mode_t bits)
110 mbits |= ( bits & ( S_IREAD >> 6 )) ? AR_UREAD : 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(struct stat *stat, struct maccess *ma)
125 mode = stat->st_mode;
126 ma->ma_world = utombits( mode );
129 ma->ma_group = utombits( mode );
132 ma->ma_owner = utombits( mode );
134 /* ma_user is a union of all permissions but we must follow
137 if ( (uuid == stat->st_uid) || (uuid == 0)) {
138 ma->ma_user = ma->ma_owner | AR_UOWN;
140 else if ( gmem( stat->st_gid )) {
141 ma->ma_user = ma->ma_group;
144 ma->ma_user = ma->ma_world;
148 * There are certain things the mac won't try if you don't have
149 * the "owner" bit set, even tho you can do these things on unix wiht
150 * only write permission. What were the things?
153 * ditto seems to care if st_uid is 0 ?
154 * was ma->ma_user & AR_UWRITE
155 * but 0 as owner is a can of worms.
157 if ( !stat->st_uid ) {
158 ma->ma_user |= AR_UOWN;
166 * Calculate the mode for a directory using a stat() call to
167 * estimate permission.
169 * Note: the previous method, using access(), does not work correctly
172 * dir parameter is used by AFS
174 void accessmode(char *path, struct maccess *ma, struct dir *dir _U_, struct stat *st)
179 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
181 if (lstat(path, &sb) != 0)
186 #ifdef HAVE_NFSv4_ACLS
187 /* 10.5 Finder looks at OS 9 mode, so we must do some mapping */
188 acltoownermode( path, st, uuid, ma);
192 int gmem(const gid_t gid)
196 for ( i = 0; i < ngroups; i++ ) {
197 if ( groups[ i ] == gid ) {
204 static mode_t mtoubits(u_char bits)
210 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
211 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
212 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
213 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
218 /* ----------------------------------
219 from the finder's share windows (menu--> File--> sharing...)
220 and from AFP 3.0 spec page 63
221 the mac mode should be save somewhere
223 mode_t mtoumode(struct maccess *ma)
228 mode |= mtoubits( ma->ma_owner |ma->ma_world);
231 mode |= mtoubits( ma->ma_group |ma->ma_world);
234 mode |= mtoubits( ma->ma_world );
239 #define EXEC_MODE (S_IXGRP | S_IXUSR | S_IXOTH)
241 int setdeskmode(const mode_t mode)
243 char wd[ MAXPATHLEN + 1];
245 char modbuf[ 12 + 1], *m;
246 struct dirent *deskp, *subp;
249 if (!dir_rx_set(mode)) {
250 /* want to remove read and search access to owner it will screw the volume */
253 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
256 if ( chdir( ".AppleDesktop" ) < 0 ) {
259 if (( desk = opendir( "." )) == NULL ) {
260 if ( chdir( wd ) < 0 ) {
261 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
265 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
266 if ( strcmp( deskp->d_name, "." ) == 0 ||
267 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
270 strcpy( modbuf, deskp->d_name );
271 strcat( modbuf, "/" );
272 m = strchr( modbuf, '\0' );
273 if (( sub = opendir( deskp->d_name )) == NULL ) {
276 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
277 if ( strcmp( subp->d_name, "." ) == 0 ||
278 strcmp( subp->d_name, ".." ) == 0 ) {
282 strcat( modbuf, subp->d_name );
283 /* XXX: need to preserve special modes */
284 if (lstat(modbuf, &st) < 0) {
285 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",fullpathname(modbuf), strerror(errno) );
289 if (S_ISDIR(st.st_mode)) {
290 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
291 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
293 } else if ( chmod( modbuf, mode & ~(default_options.umask | EXEC_MODE) ) < 0 && errno != EPERM ) {
294 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
299 /* XXX: need to preserve special modes */
300 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
301 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(deskp->d_name), strerror(errno) );
305 if ( chdir( wd ) < 0 ) {
306 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
309 /* XXX: need to preserve special modes */
310 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
311 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s", fullpathname(".AppleDesktop"),strerror(errno) );
316 /* --------------------- */
317 int setfilunixmode (const struct vol *vol, struct path* path, mode_t mode)
319 if (!path->st_valid) {
323 if (path->st_errno) {
327 mode |= vol->v_fperm;
329 if (setfilmode( path->u_name, mode, &path->st, vol->v_umask) < 0)
331 /* we need to set write perm if read set for resource fork */
332 return vol->vfs->vfs_setfilmode(vol, path->u_name, mode, &path->st);
336 /* --------------------- */
337 int setdirunixmode(const struct vol *vol, const char *name, mode_t mode)
340 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
342 LOG(log_debug, logtype_afpd, "setdirunixmode('%s', mode:%04o) {v_dperm:%04o}",
343 fullpathname(name), mode, vol->v_dperm);
345 mode |= vol->v_dperm;
347 if (dir_rx_set(mode)) {
348 /* extending right? dir first then .AppleDouble in rf_setdirmode */
349 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
352 if (vol->vfs->vfs_setdirunixmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
355 if (!dir_rx_set(mode)) {
356 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
362 /* --------------------- */
363 int setdirmode(const struct vol *vol, const char *name, mode_t mode)
369 int osx = vol->v_adouble == AD_VERSION2_OSX;
370 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
372 mode |= vol->v_dperm;
373 hf_mode = ad_hf_mode(mode);
375 if (dir_rx_set(mode)) {
376 /* extending right? dir first */
377 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
381 if (( dir = opendir( name )) == NULL ) {
382 LOG(log_error, logtype_afpd, "setdirmode: opendir: %s", fullpathname(name), strerror(errno) );
386 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
388 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
391 if ( lstat( dirp->d_name, &st ) < 0 ) {
392 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",dirp->d_name, strerror(errno) );
396 if (!S_ISDIR(st.st_mode)) {
397 int setmode = (osx && *dirp->d_name == '.')?hf_mode:mode;
399 if (setfilmode(dirp->d_name, setmode, &st, vol->v_umask) < 0) {
400 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",dirp->d_name, strerror(errno) );
407 if (vol->vfs->vfs_setdirmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
411 if (!dir_rx_set(mode)) {
412 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
418 /* ----------------------------- */
419 int setdeskowner(const uid_t uid, const gid_t gid)
421 char wd[ MAXPATHLEN + 1];
422 char modbuf[12 + 1], *m;
423 struct dirent *deskp, *subp;
426 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
429 if ( chdir( ".AppleDesktop" ) < 0 ) {
432 if (( desk = opendir( "." )) == NULL ) {
433 if ( chdir( wd ) < 0 ) {
434 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
438 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
439 if ( strcmp( deskp->d_name, "." ) == 0 ||
440 strcmp( deskp->d_name, ".." ) == 0 ||
441 strlen( deskp->d_name ) > 2 ) {
444 strcpy( modbuf, deskp->d_name );
445 strcat( modbuf, "/" );
446 m = strchr( modbuf, '\0' );
447 if (( sub = opendir( deskp->d_name )) == NULL ) {
450 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
451 if ( strcmp( subp->d_name, "." ) == 0 ||
452 strcmp( subp->d_name, ".." ) == 0 ) {
456 strcat( modbuf, subp->d_name );
457 /* XXX: add special any uid, ignore group bits */
458 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
459 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s", fullpathname(modbuf), strerror(errno) );
463 /* XXX: add special any uid, ignore group bits */
464 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
465 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
466 deskp->d_name, strerror(errno) );
470 if ( chdir( wd ) < 0 ) {
471 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
474 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
475 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s", fullpathname(".AppleDouble"), strerror(errno) );
480 /* ----------------------------- */
481 int setfilowner(const struct vol *vol, const uid_t uid, const gid_t gid, struct path* path)
484 if (!path->st_valid) {
488 if (path->st_errno) {
492 if ( lchown( path->u_name, uid, gid ) < 0 && errno != EPERM ) {
493 LOG(log_debug, logtype_afpd, "setfilowner: chown %d/%d %s: %s",
494 uid, gid, path->u_name, strerror(errno) );
498 if (vol->vfs->vfs_chown(vol, path->u_name, uid, gid ) < 0 && errno != EPERM) {
499 LOG(log_debug, logtype_afpd, "setfilowner: rf_chown %d/%d %s: %s",
500 uid, gid, path->u_name, strerror(errno) );
507 /* ---------------------------------
508 * uid/gid == 0 need to be handled as special cases. they really mean
509 * that user/group should inherit from other, but that doesn't fit
510 * into the unix permission scheme. we can get around this by
511 * co-opting some bits. */
512 int setdirowner(const struct vol *vol, const char *name, const uid_t uid, const gid_t gid)
517 int osx = vol->v_adouble == AD_VERSION2_OSX;
519 if (( dir = opendir( name )) == NULL ) {
522 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
523 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
526 if ( lstat( dirp->d_name, &st ) < 0 ) {
527 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
528 fullpathname(dirp->d_name), strerror(errno) );
531 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
532 if ( lchown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
533 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
534 fullpathname(dirp->d_name), strerror(errno) );
535 /* return ( -1 ); Sometimes this is okay */
541 if (vol->vfs->vfs_setdirowner(vol, name, uid, gid) < 0) {
545 if ( lstat( ".", &st ) < 0 ) {
548 if ( gid && gid != st.st_gid && lchown( ".", uid, gid ) < 0 && errno != EPERM ) {
549 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
550 uid, gid, fullpathname("."), strerror(errno) );
557 /* recursive chown()ing of a directory */
558 static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
561 struct dirent *entry;
564 char newpath[PATH_MAX+1];
565 newpath[PATH_MAX] = '\0';
567 if (chown(path, uid, gid) < 0) {
568 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
572 if (lstat(path, &sbuf) < 0) {
573 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
577 if (S_ISDIR(sbuf.st_mode)) {
578 odir = opendir(path);
580 LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s", path, uid, strerror(errno));
581 goto recursive_chown_end;
583 while (NULL != (entry=readdir(odir)) ) {
584 name = entry->d_name;
585 if (name[0] == '.' && name[1] == '\0')
587 if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
589 sprintf(newpath, "%s/%s", path, name);
590 if (recursive_chown(newpath, uid, gid) < 0)