PATCH: tail-dropping in files module mkdir

[Clint Adams <schizo@xxxxxxxxxx>]

This should let mkdir work a little better.

In addition to the -p problem, I think that zpathmax needs to
be modified to do one of the following:

a) return the number from pathconf() so that it can be compared
with strlen of the full pathname with tail

b) take aforementioned strlen as an argument

BTW, I think pathconf does the "errno unchanged" bit because of
some prohibition of the library settings errno to 0 or setting
errno on success.

Index: Src/Modules/files.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/Modules/files.c,v
retrieving revision 1.4
diff -u -r1.4 files.c
--- Src/Modules/files.c	2000/08/04 07:09:46	1.4
+++ Src/Modules/files.c	2000/08/04 14:43:36
@@ -71,6 +71,7 @@
     mode_t oumask = umask(0);
     mode_t mode = 0777 & ~oumask;
     int err = 0;
+    char *head;
 
     umask(oumask);
     if(ops['m']) {
@@ -91,8 +92,19 @@
 
 	while(ptr > *args + (**args == '/') && *--ptr == '/')
 	    *ptr = 0;
-	if(zpathmax(unmeta(*args)) < 0) {
-	    zwarnnam(nam, "%s: %e", *args, errno);
+
+/* Drop the tail so that pathconf receives a potentially valid pathname */
+	head = (char *) ztrdup(*args);
+	if ((ptr = strrchr(head, '/')))
+	    *ptr = 0;
+	else {
+/* Relative to current directory */
+	    *head = '.';
+	    *(head + 1) = '\0';
+	}
+
+	if(zpathmax(unmeta(head)) < 0) {
+	    zwarnnam(nam, "%s: %e", head, errno);
 	    err = 1;
 	    continue;
 	}
@@ -121,6 +133,8 @@
 	    }
 	} else
 	    err |= domkdir(nam, *args, mode, 0);
+
+	free(head);
     }
     return err;
 }