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-rw-r--r--source3/lib/substitute.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/source3/lib/substitute.c b/source3/lib/substitute.c
index 5eb557d03c..0212147161 100644
--- a/source3/lib/substitute.c
+++ b/source3/lib/substitute.c
@@ -206,7 +206,7 @@ void standard_sub_advanced(int snum, char *user, char *connectpath, gid_t gid, c
int l = sizeof(pstring) - (int)(p-str);
switch (*(p+1)) {
- case 'U' : string_sub(p,"%U", user,l); break;
+ case 'U' : string_sub(p,"%U",sam_logon_in_ssb?samlogon_user:sesssetup_user,l); break;
case 'G' :
if ((pass = Get_Pwnam(user,False))!=NULL) {
string_sub(p,"%G",gidtoname(pass->pw_gid),l);
@@ -272,7 +272,18 @@ like standard_sub but by snum
****************************************************************************/
void standard_sub_snum(int snum, char *str)
{
- standard_sub_advanced(snum, "", "", -1, str);
+ extern struct current_user current_user;
+ static uid_t cached_uid = -1;
+ static fstring cached_user;
+ /* calling uidtoname() on every substitute would be too expensive, so
+ we cache the result here as nearly every call is for the same uid */
+
+ if (cached_uid != current_user.uid) {
+ fstrcpy(cached_user, uidtoname(current_user.uid));
+ cached_uid = current_user.uid;
+ }
+
+ standard_sub_advanced(snum, cached_user, "", -1, str);
}
/*******************************************************************