2
* $Id: unix.c,v 1.38.2.1 2003/02/04 19:10:35 didg Exp $
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* Copyright (c) 1990,1993 Regents of The University of Michigan.
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* All Rights Reserved. See COPYRIGHT.
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#endif /* HAVE_CONFIG_H */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <atalk/logger.h>
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#include <netatalk/endian.h>
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#include <atalk/adouble.h>
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#include <atalk/afp.h>
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#else /* STDC_HEADERS */
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#endif /* HAVE_STRCHR */
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char *strchr (), *strrchr ();
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#define memcpy(d,s,n) bcopy ((s), (d), (n))
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#define memmove(d,s,n) bcopy ((s), (d), (n))
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#endif /* ! HAVE_MEMCPY */
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#endif /* STDC_HEADERS */
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#endif /* HAVE_FCNTL_H */
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#include "directory.h"
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* Get the free space on a partition.
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int ustatfs_getvolspace( vol, bfree, btotal, bsize )
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const struct vol *vol;
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VolSpace *bfree, *btotal;
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VolSpace maxVolSpace = (~(VolSpace)0);
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if ( statfs( vol->v_path, &sfs ) < 0 ) {
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LOG(log_error, logtype_afpd, "ustatfs_getvolspace unable to stat %s", vol->v_path);
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return( AFPERR_PARAM );
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*bfree = (VolSpace) sfs.fd_req.bfreen;
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*bfree = (VolSpace) sfs.f_bavail;
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*bsize = sfs.f_frsize;
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if ( *bfree > maxVolSpace / *bsize ) {
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( sfs.fd_req.btot - ( sfs.fd_req.bfree - sfs.fd_req.bfreen ));
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( sfs.f_blocks - ( sfs.f_bfree - sfs.f_bavail ));
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/* see similar block above comments */
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if ( *btotal > maxVolSpace / *bsize ) {
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*btotal = maxVolSpace;
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static __inline__ int utombits( bits )
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mbits |= ( bits & ( S_IREAD >> 6 )) ? (AR_UREAD | AR_USEARCH) : 0;
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mbits |= ( bits & ( S_IWRITE >> 6 )) ? AR_UWRITE : 0;
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/* Do we really need this?
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mbits |= ( bits & ( S_IEXEC >> 6) ) ? AR_USEARCH : 0; */
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/* --------------------------------
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void utommode( stat, ma )
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mode = stat->st_mode;
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ma->ma_world = utombits( mode );
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ma->ma_group = utombits( mode );
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ma->ma_owner = utombits( mode );
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/* ma_user is a union of all permissions but we must follow
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if ( (uuid == stat->st_uid) || (uuid == 0)) {
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ma->ma_user = ma->ma_owner | AR_UOWN;
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else if ( gmem( stat->st_gid )) {
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ma->ma_user = ma->ma_group;
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ma->ma_user = ma->ma_world;
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* There are certain things the mac won't try if you don't have
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* the "owner" bit set, even tho you can do these things on unix wiht
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* only write permission. What were the things?
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* FIXME and so what ?
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if ( ma->ma_user & AR_UWRITE ) {
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ma->ma_user |= AR_UOWN;
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* Calculate the mode for a directory using a stat() call to
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* estimate permission.
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* Note: the previous method, using access(), does not work correctly
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void accessmode( path, ma, dir, st )
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ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
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if (stat(path, &sb) != 0)
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for ( i = 0; i < ngroups; i++ ) {
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if ( groups[ i ] == gid ) {
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static __inline__ mode_t mtoubits( bits )
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mode |= ( bits & AR_UREAD ) ? ( (S_IREAD | S_IEXEC) >> 6 ) : 0;
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mode |= ( bits & AR_UWRITE ) ? ( (S_IWRITE | S_IEXEC) >> 6 ) : 0;
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/* I don't think there's a way to set the SEARCH bit by itself on a Mac
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mode |= ( bits & AR_USEARCH ) ? ( S_IEXEC >> 6 ) : 0; */
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/* ----------------------------------
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from the finder's share windows (menu--> File--> sharing...)
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and from AFP 3.0 spec page 63
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the mac mode should be save somewhere
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mode_t mtoumode( ma )
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mode |= mtoubits( ma->ma_owner |ma->ma_world);
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mode |= mtoubits( ma->ma_group |ma->ma_world);
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mode |= mtoubits( ma->ma_world );
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a dropbox is a folder where w is set but not r eg:
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rwx-wx-wx or rwx-wx--
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rwx----wx (is not asked by a Mac with OS >= 8.0 ?)
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static int stickydirmode(name, mode, dropbox)
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/* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
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if ( ( (mode & S_IWOTH) && !(mode & S_IROTH)) ||
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( (mode & S_IWGRP) && !(mode & S_IRGRP)) )
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if ( seteuid(0) < 0) {
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LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
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if ( (retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) )) < 0) {
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LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
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LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
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#endif /* DROPKLUDGE */
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* Ignore EPERM errors: We may be dealing with a directory that is
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* group writable, in which case chmod will fail.
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if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
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LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",name, strerror(errno) );
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int setdeskmode( mode )
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char wd[ MAXPATHLEN + 1];
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char modbuf[ 12 + 1], *m;
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struct dirent *deskp, *subp;
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if ( getcwd( wd , MAXPATHLEN) == NULL ) {
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if ( chdir( ".AppleDesktop" ) < 0 ) {
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if (( desk = opendir( "." )) == NULL ) {
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if ( chdir( wd ) < 0 ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
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for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
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if ( strcmp( deskp->d_name, "." ) == 0 ||
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strcmp( deskp->d_name, ".." ) == 0 || strlen( deskp->d_name ) > 2 ) {
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strcpy( modbuf, deskp->d_name );
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strcat( modbuf, "/" );
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m = strchr( modbuf, '\0' );
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if (( sub = opendir( deskp->d_name )) == NULL ) {
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for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
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if ( strcmp( subp->d_name, "." ) == 0 ||
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strcmp( subp->d_name, ".." ) == 0 ) {
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strcat( modbuf, subp->d_name );
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/* XXX: need to preserve special modes */
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if (stat(modbuf, &st) < 0) {
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LOG(log_error, logtype_afpd, "setdeskmode: stat %s: %s",
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modbuf, strerror(errno) );
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if (S_ISDIR(st.st_mode)) {
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if ( chmod( modbuf, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
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modbuf, strerror(errno) );
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} else if ( chmod( modbuf, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
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modbuf, strerror(errno) );
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/* XXX: need to preserve special modes */
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if ( chmod( deskp->d_name, (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chmod %s: %s",
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deskp->d_name, strerror(errno) );
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if ( chdir( wd ) < 0 ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chdir %s: %s", wd, strerror(errno) );
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/* XXX: need to preserve special modes */
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if ( chmod( ".AppleDesktop", (DIRBITS | mode) & ~default_options.umask ) < 0 && errno != EPERM ) {
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LOG(log_error, logtype_afpd, "setdeskmode: chmod .AppleDesktop: %s", strerror(errno) );
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int setfilmode(name, mode, st)
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mode_t mask = S_IRUSR |S_IWUSR | S_IRGRP | S_IWGRP |S_IROTH | S_IWOTH;
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if (stat(name, &sb) != 0)
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mode &= mask; /* keep only rw-rw-rw in mode */
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mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
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if ( chmod( name, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
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int setdirmode( mode, noadouble, dropbox )
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char buf[ MAXPATHLEN + 1];
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if (( dir = opendir( "." )) == NULL ) {
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LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
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for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
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if ( *dirp->d_name == '.' ) {
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if ( stat( dirp->d_name, &st ) < 0 ) {
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LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s",
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dirp->d_name, strerror(errno) );
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if (S_ISREG(st.st_mode)) {
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if (setfilmode(dirp->d_name, mode, &st) < 0) {
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LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",
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dirp->d_name, strerror(errno) );
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/* XXX: need to preserve special modes */
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else if (S_ISDIR(st.st_mode)) {
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if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
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} else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
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/* change perm of .AppleDouble's files
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if (( dir = opendir( ".AppleDouble" )) == NULL ) {
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goto setdirmode_noadouble;
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LOG(log_error, logtype_afpd, "setdirmode: opendir .AppleDouble: %s", strerror(errno) );
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strcpy( buf, ".AppleDouble" );
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m = strchr( buf, '\0' );
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for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
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if ( strcmp( dirp->d_name, "." ) == 0 ||
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strcmp( dirp->d_name, ".." ) == 0 ) {
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strcat( buf, dirp->d_name );
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if ( stat( buf, &st ) < 0 ) {
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LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
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if (S_ISREG(st.st_mode)) {
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if (setfilmode(buf, ad_hf_mode(mode), &st) < 0) {
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/* FIXME what do we do then? */
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/* XXX: use special bits to tag directory permissions */
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/* XXX: need to preserve special modes */
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if ( stickydirmode(".AppleDouble", DIRBITS | mode, dropbox) < 0 )
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setdirmode_noadouble:
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/* XXX: need to preserve special modes */
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if ( stickydirmode(".", DIRBITS | mode, dropbox) < 0 )
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int setdeskowner( uid, gid )
479
char wd[ MAXPATHLEN + 1];
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char modbuf[12 + 1], *m;
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struct dirent *deskp, *subp;
484
if ( getcwd( wd, MAXPATHLEN ) == NULL ) {
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if ( chdir( ".AppleDesktop" ) < 0 ) {
490
if (( desk = opendir( "." )) == NULL ) {
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if ( chdir( wd ) < 0 ) {
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LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
496
for ( deskp = readdir( desk ); deskp != NULL; deskp = readdir( desk )) {
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if ( strcmp( deskp->d_name, "." ) == 0 ||
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strcmp( deskp->d_name, ".." ) == 0 ||
499
strlen( deskp->d_name ) > 2 ) {
502
strcpy( modbuf, deskp->d_name );
503
strcat( modbuf, "/" );
504
m = strchr( modbuf, '\0' );
505
if (( sub = opendir( deskp->d_name )) == NULL ) {
508
for ( subp = readdir( sub ); subp != NULL; subp = readdir( sub )) {
509
if ( strcmp( subp->d_name, "." ) == 0 ||
510
strcmp( subp->d_name, ".." ) == 0 ) {
514
strcat( modbuf, subp->d_name );
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/* XXX: add special any uid, ignore group bits */
516
if ( chown( modbuf, uid, gid ) < 0 && errno != EPERM ) {
517
LOG(log_error, logtype_afpd, "setdeskown: chown %s: %s",
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modbuf, strerror(errno) );
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/* XXX: add special any uid, ignore group bits */
523
if ( chown( deskp->d_name, uid, gid ) < 0 && errno != EPERM ) {
524
LOG(log_error, logtype_afpd, "setdeskowner: chown %s: %s",
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deskp->d_name, strerror(errno) );
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if ( chdir( wd ) < 0 ) {
530
LOG(log_error, logtype_afpd, "setdeskowner: chdir %s: %s", wd, strerror(errno) );
533
if ( chown( ".AppleDesktop", uid, gid ) < 0 && errno != EPERM ) {
534
LOG(log_error, logtype_afpd, "setdeskowner: chown .AppleDesktop: %s",
541
/* uid/gid == 0 need to be handled as special cases. they really mean
542
* that user/group should inherit from other, but that doesn't fit
543
* into the unix permission scheme. we can get around this by
544
* co-opting some bits. */
545
int setdirowner( uid, gid, noadouble )
550
char buf[ MAXPATHLEN + 1];
556
if (( dir = opendir( "." )) == NULL ) {
559
for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
560
if ( *dirp->d_name == '.' ) {
563
if ( stat( dirp->d_name, &st ) < 0 ) {
564
LOG(log_error, logtype_afpd, "setdirowner: stat %s: %s",
565
dirp->d_name, strerror(errno) );
568
if (( st.st_mode & S_IFMT ) == S_IFREG ) {
569
if ( chown( dirp->d_name, uid, gid ) < 0 && errno != EPERM ) {
570
LOG(log_debug, logtype_afpd, "setdirowner: chown %s: %s",
571
dirp->d_name, strerror(errno) );
572
/* return ( -1 ); Sometimes this is okay */
577
if (( dir = opendir( ".AppleDouble" )) == NULL ) {
579
goto setdirowner_noadouble;
582
strcpy( buf, ".AppleDouble" );
584
m = strchr( buf, '\0' );
585
for ( dirp = readdir( dir ); dirp != NULL; dirp = readdir( dir )) {
586
if ( strcmp( dirp->d_name, "." ) == 0 ||
587
strcmp( dirp->d_name, ".." ) == 0 ) {
591
strcat( buf, dirp->d_name );
592
if ( chown( buf, uid, gid ) < 0 && errno != EPERM ) {
593
LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d %s: %s",
594
uid, gid, buf, strerror(errno) );
595
/* return ( -1 ); Sometimes this is okay */
601
* We cheat: we know that chown doesn't do anything.
603
if ( stat( ".AppleDouble", &st ) < 0 ) {
604
LOG(log_error, logtype_afpd, "setdirowner: stat .AppleDouble: %s", strerror(errno) );
607
if ( gid && gid != st.st_gid && chown( ".AppleDouble", uid, gid ) < 0 &&
609
LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .AppleDouble: %s",
610
uid, gid, strerror(errno) );
611
/* return ( -1 ); Sometimes this is okay */
614
setdirowner_noadouble:
615
if ( stat( ".", &st ) < 0 ) {
618
if ( gid && gid != st.st_gid && chown( ".", uid, gid ) < 0 &&
620
LOG(log_debug, logtype_afpd, "setdirowner: chown %d/%d .: %s",
621
uid, gid, strerror(errno) );