int zuluCrypRemoveEntryFromMtab( const char * m_point )
{
#if USE_NEW_LIBMOUNT_API
struct libmnt_lock * lock ;
#else
mnt_lock * lock ;
#endif
struct mntent * mt ;
FILE * f ;
FILE * g ;
size_t dir_len = strlen( m_point ) ;
int h ;
lock = mnt_new_lock( "/etc/mtab~",getpid() ) ;
f = setmntent( "/etc/mtab","r" ) ;
if( mnt_lock_file( lock ) != 0 ){
h = 4 ;
}else{
g = setmntent( "/etc/mtab-zuluCrypt","w" ) ;
while( ( mt = getmntent( f ) ) != NULL ){
if( StringPrefixMatch( mt->mnt_dir,m_point,dir_len ) ){
/*
* an entry we want to delete,skip it
*/
;
}else{
addmntent( g,mt ) ;
}
}
endmntent( g ) ;
rename( "/etc/mtab-zuluCrypt","/etc/mtab" ) ;
chown( "/etc/mtab",0,0 ) ;
chmod( "/etc/mtab",S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH ) ;
mnt_unlock_file( lock ) ;
h = 0 ;
}
endmntent( f ) ;
mnt_free_lock( lock ) ;
return h ;
}
/**
* mnt_update_table:
* @upd: update
* @lc: lock or NULL
*
* High-level API to update /etc/mtab (or private /run/mount/utab file).
*
* The @lc lock is optional and will be created if necessary. Note that
* the automatically created lock blocks all signals.
*
* See also mnt_lock_block_signals() and mnt_context_get_lock().
*
* Returns: 0 on success, negative number on error.
*/
int mnt_update_table(struct libmnt_update *upd, struct libmnt_lock *lc)
{
struct libmnt_lock *lc0 = lc;
int rc = -EINVAL;
assert(upd);
if (!upd->filename || !upd)
return -EINVAL;
if (!upd->ready)
return 0;
DBG(UPDATE, mnt_debug_h(upd, "%s: update tab", upd->filename));
if (upd->fs) {
DBG(UPDATE, mnt_fs_print_debug(upd->fs, stderr));
}
if (!lc) {
lc = mnt_new_lock(upd->filename, 0);
if (lc)
mnt_lock_block_signals(lc, TRUE);
}
if (lc && upd->userspace_only)
mnt_lock_use_simplelock(lc, TRUE); /* use flock */
if (!upd->fs && upd->target)
rc = update_remove_entry(upd, lc); /* umount */
else if (upd->mountflags & MS_MOVE)
rc = update_modify_target(upd, lc); /* move */
else if (upd->mountflags & MS_REMOUNT)
rc = update_modify_options(upd, lc); /* remount */
else if (upd->fs)
rc = update_add_entry(upd, lc); /* mount */
upd->ready = FALSE;
DBG(UPDATE, mnt_debug_h(upd, "%s: update tab: done [rc=%d]",
upd->filename, rc));
if (lc != lc0)
mnt_free_lock(lc);
return rc;
}
