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From: Kip Macy <kmacy@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 127792 for review
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http://perforce.freebsd.org/chv.cgi?CH=127792

Change 127792 by kmacy@kmacy_home:ethng on 2007/10/19 19:31:20

	simple idr compat shim

Affected files ...

.. //depot/projects/ethng/src/sys/sys/linux_compat.h#4 edit

Differences ...

==== //depot/projects/ethng/src/sys/sys/linux_compat.h#4 (text+ko) ====

@@ -82,4 +82,61 @@
 		} \
 	} while (0)
 
+
+/*
+ * idr emulation
+ */
+
+
+
+struct idr {
+        struct idr *next;
+        unsigned int key;
+        void *value;
+};
+
+
+#define DEFINE_IDR(x) struct idr *x;
+
+static inline void *idr_find(struct idr *x, uint32_t key)
+{
+        struct idr *i;
+        for (i=x;i;i=i->next) if (i->key==key) return(i->value);
+        return(0);
+}
+
+static inline int idr_pre_get(struct idr *idp, unsigned int gfp){return(1);}
+static inline int idr_get_new(struct idr **idp, void *ptr, int *id)
+{
+        struct idr *i=malloc(sizeof(struct idr),M_TEMP,M_WAITOK);
+        i->key=*id;
+        i->value=ptr;
+        i->next=*idp;
+        *idp=i;
+        return(0);
+}
+
+static inline int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
+{
+        struct idr *i=malloc(sizeof(struct idr),M_TEMP,M_WAITOK);
+        i->key=*id;
+        i->value=ptr;
+        i->next=idp;
+        idp=i;
+        return(0);
+}
+
+static inline void idr_remove(struct idr *idp, int id) 
+{
+        /* leak */
+        struct idr *i;
+        for (i=idp;i;i=((i)->next)) 
+                if ((i)->key==id) {
+                        i=(i)->next;
+                        return;
+                }
+}
+static inline void idr_init(struct idr *idp){}
+
+
 #endif