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@ -17,27 +17,43 @@ package fuse
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import (
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"fmt"
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"reflect"
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"strings"
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)
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func describeRequest(op interface{}) (s string) {
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// Handle special cases with custom formatting.
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switch typed := op.(type) {
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case *interruptOp:
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s = fmt.Sprintf("interruptOp(fuseid=0x%08x)", typed.FuseID)
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return
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}
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// Decide on the name of the given op.
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func opName(op interface{}) string {
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// We expect all ops to be pointers.
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t := reflect.TypeOf(op).Elem()
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// Strip the "Op" from "FooOp".
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return strings.TrimSuffix(t.Name(), "Op")
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}
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func describeRequest(op interface{}) (s string) {
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v := reflect.ValueOf(op).Elem()
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t := v.Type()
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// Find the inode number involved, if possible.
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var inodeDesc string
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// We will set up a comma-separated list of components.
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var components []string
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addComponent := func(format string, v ...interface{}) {
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components = append(components, fmt.Sprintf(format, v...))
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}
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// Include an inode number, if available.
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if f := v.FieldByName("Inode"); f.IsValid() {
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inodeDesc = fmt.Sprintf("(inode=%v)", f.Interface())
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addComponent("inode %v", f.Interface())
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}
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// Use the type name.
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s = fmt.Sprintf("%s%s", t.Name(), inodeDesc)
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// Handle special cases.
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switch typed := op.(type) {
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case *interruptOp:
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addComponent("fuseid 0x%08x", typed.FuseID)
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}
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// Use just the name if there is no extra info.
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if len(components) == 0 {
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return opName(op)
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}
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return
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// Otherwise, include the extra info.
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return fmt.Sprintf("%s (%s)", opName(op), strings.Join(components, ", "))
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}
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