2 * $Id: unix.c,v 1.54 2009-10-13 22:55:37 didg 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(const struct vol *vol, VolSpace *bfree, VolSpace *btotal, u_int32_t *bsize)
59 VolSpace maxVolSpace = (~(VolSpace)0);
68 if ( statfs( vol->v_path, &sfs ) < 0 ) {
69 LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
70 return( AFPERR_PARAM );
74 *bfree = (VolSpace) sfs.fd_req.bfreen;
77 *bfree = (VolSpace) sfs.f_bavail;
78 *bsize = sfs.f_frsize;
81 if ( *bfree > maxVolSpace / *bsize ) {
89 ( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
92 ( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
95 /* see similar block above comments */
96 if ( *btotal > maxVolSpace / *bsize ) {
97 *btotal = maxVolSpace;
105 static int utombits(mode_t bits)
111 mbits |= ( bits & ( S_IREAD >> 6 )) ? AR_UREAD : 0;
112 mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
113 /* Do we really need this? */
114 mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0;
119 /* --------------------------------
122 void utommode(struct stat *stat, struct maccess *ma)
126 mode = stat->st_mode;
127 ma->ma_world = utombits( mode );
130 ma->ma_group = utombits( mode );
133 ma->ma_owner = utombits( mode );
135 /* ma_user is a union of all permissions but we must follow
138 if ( (uuid == stat->st_uid) || (uuid == 0)) {
139 ma->ma_user = ma->ma_owner | AR_UOWN;
141 else if ( gmem( stat->st_gid )) {
142 ma->ma_user = ma->ma_group;
145 ma->ma_user = ma->ma_world;
149 * There are certain things the mac won't try if you don't have
150 * the "owner" bit set, even tho you can do these things on unix wiht
151 * only write permission. What were the things?
154 * ditto seems to care if st_uid is 0 ?
155 * was ma->ma_user & AR_UWRITE
156 * but 0 as owner is a can of worms.
158 if ( !stat->st_uid ) {
159 ma->ma_user |= AR_UOWN;
167 * Calculate the mode for a directory using a stat() call to
168 * estimate permission.
170 * Note: the previous method, using access(), does not work correctly
173 * dir parameter is used by AFS
175 void accessmode(char *path, struct maccess *ma, struct dir *dir _U_, struct stat *st)
180 ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
182 if (stat(path, &sb) != 0)
187 #ifdef HAVE_NFSv4_ACLS
188 /* 10.5 Finder looks at OS 9 mode, so we must do some mapping */
189 acltoownermode( path, st, uuid, ma);
193 int gmem(const gid_t gid)
197 for ( i = 0; i < ngroups; i++ ) {
198 if ( groups[ i ] == gid ) {
205 static mode_t mtoubits(u_char bits)
211 mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
212 mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
213 /* I don't think there's a way to set the SEARCH bit by itself on a Mac
214 mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
219 /* ----------------------------------
220 from the finder's share windows (menu--> File--> sharing...)
221 and from AFP 3.0 spec page 63
222 the mac mode should be save somewhere
224 mode_t mtoumode(struct maccess *ma)
229 mode |= mtoubits( ma->ma_owner |ma->ma_world);
232 mode |= mtoubits( ma->ma_group |ma->ma_world);
235 mode |= mtoubits( ma->ma_world );
240 #define EXEC_MODE (S_IXGRP | S_IXUSR | S_IXOTH)
242 int setdeskmode(const mode_t mode)
244 char wd[ MAXPATHLEN + 1];
246 char modbuf[ 12 + 1], *m;
247 struct dirent *deskp, *subp;
250 if (!dir_rx_set(mode)) {
251 /* want to remove read and search access to owner it will screw the volume */
254 if ( getcwd( wd , MAXPATHLEN) == NULL ) {
257 if ( chdir( ".AppleDesktop" ) < 0 ) {
260 if (( desk = opendir( "." )) == NULL ) {
261 if ( chdir( wd ) < 0 ) {
262 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
266 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
267 if ( strcmp( deskp->d_name, "." ) == 0 ||
268 strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
271 strcpy( modbuf, deskp->d_name );
272 strcat( modbuf, "/" );
273 m = strchr( modbuf, '\0' );
274 if (( sub = opendir( deskp->d_name )) == NULL ) {
277 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
278 if ( strcmp( subp->d_name, "." ) == 0 ||
279 strcmp( subp->d_name, ".." ) == 0 ) {
283 strcat( modbuf, subp->d_name );
284 /* XXX: need to preserve special modes */
285 if (stat(modbuf, &st) < 0) {
286 LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",fullpathname(modbuf), strerror(errno) );
290 if (S_ISDIR(st.st_mode)) {
291 if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
292 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
294 } else if ( chmod( modbuf, mode & ~(default_options.umask | EXEC_MODE) ) < 0 && errno != EPERM ) {
295 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(modbuf), strerror(errno) );
300 /* XXX: need to preserve special modes */
301 if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
302 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",fullpathname(deskp->d_name), strerror(errno) );
306 if ( chdir( wd ) < 0 ) {
307 LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
310 /* XXX: need to preserve special modes */
311 if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
312 LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s", fullpathname(".AppleDesktop"),strerror(errno) );
317 /* --------------------- */
318 int setfilunixmode (const struct vol *vol, struct path* path, mode_t mode)
320 if (!path->st_valid) {
324 if (path->st_errno) {
328 mode |= vol->v_fperm;
330 if (setfilmode( path->u_name, mode, &path->st, vol->v_umask) < 0)
332 /* we need to set write perm if read set for resource fork */
333 return vol->vfs->rf_setfilmode(vol, path->u_name, mode, &path->st);
337 /* --------------------- */
338 int setdirunixmode(const struct vol *vol, const char *name, mode_t mode)
341 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
342 mode |= vol->v_dperm;
344 if (dir_rx_set(mode)) {
345 /* extending right? dir first then .AppleDouble in rf_setdirmode */
346 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
349 if (vol->vfs->rf_setdirunixmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
352 if (!dir_rx_set(mode)) {
353 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
359 /* --------------------- */
360 int setdirmode(const struct vol *vol, const char *name, mode_t mode)
366 int osx = vol->v_adouble == AD_VERSION2_OSX;
367 int dropbox = (vol->v_flags & AFPVOL_DROPBOX);
369 mode |= vol->v_dperm;
370 hf_mode = ad_hf_mode(mode);
372 if (dir_rx_set(mode)) {
373 /* extending right? dir first */
374 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
378 if (( dir = opendir( name )) == NULL ) {
379 LOG(log_error, logtype_afpd, "setdirmode: opendir: %s", fullpathname(name), strerror(errno) );
383 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
385 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
388 if ( stat( dirp->d_name, &st ) < 0 ) {
389 LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",dirp->d_name, strerror(errno) );
393 if (!S_ISDIR(st.st_mode)) {
394 int setmode = (osx && *dirp->d_name == '.')?hf_mode:mode;
396 if (setfilmode(dirp->d_name, setmode, &st, vol->v_umask) < 0) {
397 LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",dirp->d_name, strerror(errno) );
404 if (vol->vfs->rf_setdirmode(vol, name, mode, NULL) < 0 && !vol_noadouble(vol)) {
408 if (!dir_rx_set(mode)) {
409 if ( stickydirmode(name, DIRBITS | mode, dropbox, vol->v_umask) < 0 )
415 /* ----------------------------- */
416 int setdeskowner(const uid_t uid, const gid_t gid)
418 char wd[ MAXPATHLEN + 1];
419 char modbuf[12 + 1], *m;
420 struct dirent *deskp, *subp;
423 if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
426 if ( chdir( ".AppleDesktop" ) < 0 ) {
429 if (( desk = opendir( "." )) == NULL ) {
430 if ( chdir( wd ) < 0 ) {
431 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
435 for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
436 if ( strcmp( deskp->d_name, "." ) == 0 ||
437 strcmp( deskp->d_name, ".." ) == 0 ||
438 strlen( deskp->d_name ) > 2 ) {
441 strcpy( modbuf, deskp->d_name );
442 strcat( modbuf, "/" );
443 m = strchr( modbuf, '\0' );
444 if (( sub = opendir( deskp->d_name )) == NULL ) {
447 for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
448 if ( strcmp( subp->d_name, "." ) == 0 ||
449 strcmp( subp->d_name, ".." ) == 0 ) {
453 strcat( modbuf, subp->d_name );
454 /* XXX: add special any uid, ignore group bits */
455 if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
456 LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s", fullpathname(modbuf), strerror(errno) );
460 /* XXX: add special any uid, ignore group bits */
461 if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
462 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
463 deskp->d_name, strerror(errno) );
467 if ( chdir( wd ) < 0 ) {
468 LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
471 if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
472 LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s", fullpathname(".AppleDouble"), strerror(errno) );
477 /* ----------------------------- */
478 int setfilowner(const struct vol *vol, const uid_t uid, const gid_t gid, struct path* path)
481 if (!path->st_valid) {
485 if (path->st_errno) {
489 if ( chown( path->u_name, uid, gid ) < 0 && errno != EPERM ) {
490 LOG(log_debug, logtype_afpd, "setfilowner: chown %d/%d %s: %s",
491 uid, gid, path->u_name, strerror(errno) );
495 if (vol->vfs->rf_chown(vol, path->u_name, uid, gid ) < 0 && errno != EPERM) {
496 LOG(log_debug, logtype_afpd, "setfilowner: rf_chown %d/%d %s: %s",
497 uid, gid, path->u_name, strerror(errno) );
504 /* ---------------------------------
505 * uid/gid == 0 need to be handled as special cases. they really mean
506 * that user/group should inherit from other, but that doesn't fit
507 * into the unix permission scheme. we can get around this by
508 * co-opting some bits. */
509 int setdirowner(const struct vol *vol, const char *name, const uid_t uid, const gid_t gid)
514 int osx = vol->v_adouble == AD_VERSION2_OSX;
516 if (( dir = opendir( name )) == NULL ) {
519 for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
520 if ( *dirp->d_name == '.' && (!osx || dirp->d_name[1] != '_')) {
523 if ( stat( dirp->d_name, &st ) < 0 ) {
524 LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
525 fullpathname(dirp->d_name), strerror(errno) );
528 if (( st.st_mode & S_IFMT ) == S_IFREG ) {
529 if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
530 LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
531 fullpathname(dirp->d_name), strerror(errno) );
532 /* return ( -1 ); Sometimes this is okay */
538 if (vol->vfs->rf_setdirowner(vol, name, uid, gid) < 0) {
542 if ( stat( ".", &st ) < 0 ) {
545 if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 && errno != EPERM ) {
546 LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
547 uid, gid, fullpathname("."), strerror(errno) );
554 /* recursive chown()ing of a directory */
555 static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
558 struct dirent *entry;
561 char newpath[PATH_MAX+1];
562 newpath[PATH_MAX] = '\0';
564 if (chown(path, uid, gid) < 0) {
565 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
569 if (stat(path, &sbuf) < 0) {
570 LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s", path, uid, strerror(errno));
574 if (S_ISDIR(sbuf.st_mode)) {
575 odir = opendir(path);
577 LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s", path, uid, strerror(errno));
578 goto recursive_chown_end;
580 while (NULL != (entry=readdir(odir)) ) {
581 name = entry->d_name;
582 if (name[0] == '.' && name[1] == '\0')
584 if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
586 sprintf(newpath, "%s/%s", path, name);
587 if (recursive_chown(newpath, uid, gid) < 0)
600 /* This is equivalent of unix rename(). */
601 int unix_rename(const char *oldpath, const char *newpath)
604 char pd_name[PATH_MAX+1];
610 if (rename(oldpath, newpath) < 0)
613 for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
614 pd_name[i] = newpath[i];
617 while (i > 0 && pd_name[i] != '/') i--;
618 if (pd_name[i] == '/') i++;
620 pd_name[i++] = '.'; pd_name[i++] = '\0';
622 if (stat(pd_name, &pd_stat) < 0) {
623 LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s",
624 pd_name, geteuid(), strerror(errno));
628 /* So we have SGID bit set... */
629 if ((S_ISGID & pd_stat.st_mode) != 0) {
632 LOG(log_error, logtype_afpd, "seteuid() failed: %s", strerror(errno));
633 if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
634 LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s",
635 pd_name, geteuid(), strerror(errno));