Merge with Linux 2.1.72, part 2.

The new signal code with exception of the code for the rt signals.
The definitions in <asm/siginfo.h> and <asm/ucontext.h> are currently
just stolen from the Alpha and will need to be overhauled.

1 files changed, 143 insertions, 0 deletions

diff --git a/include/linux/coda_psdev.h b/include/linux/coda_psdev.h
new file mode 100644
index 000000000..ecd213f8b
--- /dev/null
+++ b/include/linux/coda_psdev.h
@@ -0,0 +1,143 @@
+#ifndef __CODA_PSDEV_H
+#define __CODA_PSDEV_H
+
+#define CODA_PSDEV_MAJOR 67
+#define MAX_CODADEVS  5	   /* how many do we allow */
+
+extern struct vcomm psdev_vcomm[];
+
+#define CODA_SUPER_MAGIC	0x73757245
+
+struct coda_sb_info
+{
+  struct inode *      sbi_psdev;     /* /dev/cfs? Venus/kernel device */
+  struct inode *      sbi_ctlcp;     /* control magic file */
+  int                 sbi_refct;
+  struct vcomm *      sbi_vcomm;
+  struct inode *      sbi_root;
+};
+
+
+static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
+{
+    return ((struct coda_sb_info *)((sb)->u.generic_sbp));
+}
+
+
+
+extern void coda_psdev_detach(int unit);
+extern int  init_coda_psdev(void);
+
+/* to aid procedures make upcalls. They must have a 
+   declaration at the top containing:
+       struct inputArgs *inp;
+	struct outputArgs *outp;
+	int error=0;
+	int size;
+*/
+
+#define UPARG(bsize, op)\
+do {\
+  	CODA_ALLOC(inp, struct inputArgs *, (bsize));\
+	outp = (struct outputArgs *) (inp);\
+	INIT_IN(inp, (op))\
+	coda_load_creds(&(inp->cred));\
+        size = (bsize);\
+} while (0)
+
+/* upcalls */
+int venus_rootfid(struct super_block *sb, ViceFid *fidp);
+int venus_getattr(struct super_block *sb, struct ViceFid *fid, 
+		     struct coda_vattr *attr);
+int venus_setattr(struct super_block *, struct ViceFid *, 
+		     struct coda_vattr *);
+int venus_lookup(struct super_block *sb, struct ViceFid *fid, 
+		    const char *name, int length, int *type, 
+		    struct ViceFid *resfid);
+int venus_release(struct super_block *sb, struct ViceFid *fid, int flags);
+int venus_open(struct super_block *sb, struct ViceFid *fid,
+		  int flags, ino_t *ino, dev_t *dev);
+int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid, 
+			  const char *name, int length, 
+			  struct ViceFid *newfid, struct coda_vattr *attrs);
+int venus_create(struct super_block *sb, struct ViceFid *dirfid, 
+		    const char *name, int length, int excl, int mode, 
+		    struct ViceFid *newfid, struct coda_vattr *attrs) ;
+int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid, 
+		    const char *name, int length);
+int venus_remove(struct super_block *sb, struct ViceFid *dirfid, 
+		 const char *name, int length);
+int venus_readlink(struct super_block *sb, struct ViceFid *fid, 
+		   char *buffer, int *length);
+int venus_rename(struct super_block *, struct ViceFid *new_fid, 
+		 struct ViceFid *old_fid, size_t old_length, 
+		 size_t new_length, const char *old_name, 
+		 const char *new_name);
+int venus_link(struct super_block *sb, struct ViceFid *fid, 
+		  struct ViceFid *dirfid, const char *name, int len );
+int venus_symlink(struct super_block *sb, struct ViceFid *fid,
+		  const char *name, int len, const char *symname, int symlen);
+int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);
+int venus_pioctl(struct super_block *sb, struct ViceFid *fid,
+		 unsigned int cmd, struct PioctlData *data);
+int coda_downcall(int opcode, struct outputArgs *out);
+int coda_upcall(struct coda_sb_info *mntinfo, int inSize, 
+		int *outSize, struct inputArgs *buffer);
+
+
+/* messages between coda filesystem in kernel and Venus */
+struct vmsg {
+    struct queue        vm_chain;
+    caddr_t	        vm_data;
+    u_short	        vm_flags;
+    u_short             vm_inSize;  /* Size is at most 5000 bytes */
+    u_short	        vm_outSize;
+    u_short	        vm_opcode;  /* copied from data to save lookup */
+    int		        vm_unique;
+    struct wait_queue  *vm_sleep;   /* process' wait queue */
+};
+
+/* communication pending/processing queues queues */
+struct vcomm {
+	u_long		    vc_seq;
+	struct wait_queue  *vc_waitq; /* Venus wait queue */
+	struct queue	    vc_pending;
+	struct queue	    vc_processing;
+};
+
+static inline int vcomm_open(struct vcomm *vcp)
+{
+        return ((vcp)->vc_pending.forw != NULL);
+}
+
+static inline void mark_vcomm_closed(struct vcomm *vcp)
+{
+        (vcp)->vc_pending.forw = NULL;
+}
+
+/*
+ * Statistics
+ */
+struct coda_upcallstats {
+	int	ncalls;			/* client requests */
+	int	nbadcalls;		/* upcall failures */
+	int	reqs[CFS_NCALLS];	/* count of each request */
+} ;
+
+extern struct coda_upcallstats coda_callstats;
+
+static inline void clstats(int opcode)
+{
+    coda_callstats.ncalls++;
+    if ( (0 <= opcode) && (opcode <= CFS_NCALLS) )
+	coda_callstats.reqs[opcode]++;
+    else
+	printk("clstats called with bad opcode %d\n", opcode); 
+}
+
+static inline void badclstats(void)
+{
+    coda_callstats.nbadcalls++;
+}
+
+#endif