1 files changed, 0 insertions, 206 deletions
diff --git a/vendor/github.com/cilium/ebpf/internal/errors.go b/vendor/github.com/cilium/ebpf/internal/errors.go
deleted file mode 100644
index b5ccdd7d0..000000000
--- a/vendor/github.com/cilium/ebpf/internal/errors.go
+++ /dev/null
@@ -1,206 +0,0 @@
-package internal
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"strings"
-)
-
-// ErrorWithLog returns an error which includes logs from the kernel verifier.
-//
-// The default error output is a summary of the full log. The latter can be
-// accessed via VerifierError.Log or by formatting the error, see Format.
-//
-// A set of heuristics is used to determine whether the log has been truncated.
-func ErrorWithLog(err error, log []byte) *VerifierError {
-	const whitespace = "\t\r\v\n "
-
-	// Convert verifier log C string by truncating it on the first 0 byte
-	// and trimming trailing whitespace before interpreting as a Go string.
-	truncated := false
-	if i := bytes.IndexByte(log, 0); i != -1 {
-		if i == len(log)-1 && !bytes.HasSuffix(log[:i], []byte{'\n'}) {
-			// The null byte is at the end of the buffer and it's not preceded
-			// by a newline character. Most likely the buffer was too short.
-			truncated = true
-		}
-
-		log = log[:i]
-	} else if len(log) > 0 {
-		// No null byte? Dodgy!
-		truncated = true
-	}
-
-	log = bytes.Trim(log, whitespace)
-	logLines := bytes.Split(log, []byte{'\n'})
-	lines := make([]string, 0, len(logLines))
-	for _, line := range logLines {
-		// Don't remove leading white space on individual lines. We rely on it
-		// when outputting logs.
-		lines = append(lines, string(bytes.TrimRight(line, whitespace)))
-	}
-
-	return &VerifierError{err, lines, truncated}
-}
-
-// VerifierError includes information from the eBPF verifier.
-//
-// It summarises the log output, see Format if you want to output the full contents.
-type VerifierError struct {
-	// The error which caused this error.
-	Cause error
-	// The verifier output split into lines.
-	Log []string
-	// Whether the log output is truncated, based on several heuristics.
-	Truncated bool
-}
-
-func (le *VerifierError) Unwrap() error {
-	return le.Cause
-}
-
-func (le *VerifierError) Error() string {
-	log := le.Log
-	if n := len(log); n > 0 && strings.HasPrefix(log[n-1], "processed ") {
-		// Get rid of "processed 39 insns (limit 1000000) ..." from summary.
-		log = log[:n-1]
-	}
-
-	n := len(log)
-	if n == 0 {
-		return le.Cause.Error()
-	}
-
-	lines := log[n-1:]
-	if n >= 2 && (includePreviousLine(log[n-1]) || le.Truncated) {
-		// Add one more line of context if it aids understanding the error.
-		lines = log[n-2:]
-	}
-
-	var b strings.Builder
-	fmt.Fprintf(&b, "%s: ", le.Cause.Error())
-
-	for i, line := range lines {
-		b.WriteString(strings.TrimSpace(line))
-		if i != len(lines)-1 {
-			b.WriteString(": ")
-		}
-	}
-
-	omitted := len(le.Log) - len(lines)
-	if omitted == 0 && !le.Truncated {
-		return b.String()
-	}
-
-	b.WriteString(" (")
-	if le.Truncated {
-		b.WriteString("truncated")
-	}
-
-	if omitted > 0 {
-		if le.Truncated {
-			b.WriteString(", ")
-		}
-		fmt.Fprintf(&b, "%d line(s) omitted", omitted)
-	}
-	b.WriteString(")")
-
-	return b.String()
-}
-
-// includePreviousLine returns true if the given line likely is better
-// understood with additional context from the preceding line.
-func includePreviousLine(line string) bool {
-	// We need to find a good trade off between understandable error messages
-	// and too much complexity here. Checking the string prefix is ok, requiring
-	// regular expressions to do it is probably overkill.
-
-	if strings.HasPrefix(line, "\t") {
-		// [13] STRUCT drm_rect size=16 vlen=4
-		// \tx1 type_id=2
-		return true
-	}
-
-	if len(line) >= 2 && line[0] == 'R' && line[1] >= '0' && line[1] <= '9' {
-		// 0: (95) exit
-		// R0 !read_ok
-		return true
-	}
-
-	if strings.HasPrefix(line, "invalid bpf_context access") {
-		// 0: (79) r6 = *(u64 *)(r1 +0)
-		// func '__x64_sys_recvfrom' arg0 type FWD is not a struct
-		// invalid bpf_context access off=0 size=8
-		return true
-	}
-
-	return false
-}
-
-// Format the error.
-//
-// Understood verbs are %s and %v, which are equivalent to calling Error(). %v
-// allows outputting additional information using the following flags:
-//
-//     +   Output the first <width> lines, or all lines if no width is given.
-//     -   Output the last <width> lines, or all lines if no width is given.
-//
-// Use width to specify how many lines to output. Use the '-' flag to output
-// lines from the end of the log instead of the beginning.
-func (le *VerifierError) Format(f fmt.State, verb rune) {
-	switch verb {
-	case 's':
-		_, _ = io.WriteString(f, le.Error())
-
-	case 'v':
-		n, haveWidth := f.Width()
-		if !haveWidth || n > len(le.Log) {
-			n = len(le.Log)
-		}
-
-		if !f.Flag('+') && !f.Flag('-') {
-			if haveWidth {
-				_, _ = io.WriteString(f, "%!v(BADWIDTH)")
-				return
-			}
-
-			_, _ = io.WriteString(f, le.Error())
-			return
-		}
-
-		if f.Flag('+') && f.Flag('-') {
-			_, _ = io.WriteString(f, "%!v(BADFLAG)")
-			return
-		}
-
-		fmt.Fprintf(f, "%s:", le.Cause.Error())
-
-		omitted := len(le.Log) - n
-		lines := le.Log[:n]
-		if f.Flag('-') {
-			// Print last instead of first lines.
-			lines = le.Log[len(le.Log)-n:]
-			if omitted > 0 {
-				fmt.Fprintf(f, "\n\t(%d line(s) omitted)", omitted)
-			}
-		}
-
-		for _, line := range lines {
-			fmt.Fprintf(f, "\n\t%s", line)
-		}
-
-		if !f.Flag('-') {
-			if omitted > 0 {
-				fmt.Fprintf(f, "\n\t(%d line(s) omitted)", omitted)
-			}
-		}
-
-		if le.Truncated {
-			fmt.Fprintf(f, "\n\t(truncated)")
-		}
-
-	default:
-		fmt.Fprintf(f, "%%!%c(BADVERB)", verb)
-	}
-}