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path: root/vendor/golang.org/x/sys/unix/dirent.go
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Diffstat (limited to 'vendor/golang.org/x/sys/unix/dirent.go')
-rw-r--r--vendor/golang.org/x/sys/unix/dirent.go89
1 files changed, 2 insertions, 87 deletions
diff --git a/vendor/golang.org/x/sys/unix/dirent.go b/vendor/golang.org/x/sys/unix/dirent.go
index bd47581..95fd353 100644
--- a/vendor/golang.org/x/sys/unix/dirent.go
+++ b/vendor/golang.org/x/sys/unix/dirent.go
@@ -6,97 +6,12 @@
package unix
-import "unsafe"
-
-// readInt returns the size-bytes unsigned integer in native byte order at offset off.
-func readInt(b []byte, off, size uintptr) (u uint64, ok bool) {
- if len(b) < int(off+size) {
- return 0, false
- }
- if isBigEndian {
- return readIntBE(b[off:], size), true
- }
- return readIntLE(b[off:], size), true
-}
-
-func readIntBE(b []byte, size uintptr) uint64 {
- switch size {
- case 1:
- return uint64(b[0])
- case 2:
- _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[1]) | uint64(b[0])<<8
- case 4:
- _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[3]) | uint64(b[2])<<8 | uint64(b[1])<<16 | uint64(b[0])<<24
- case 8:
- _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
- uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
- default:
- panic("syscall: readInt with unsupported size")
- }
-}
-
-func readIntLE(b []byte, size uintptr) uint64 {
- switch size {
- case 1:
- return uint64(b[0])
- case 2:
- _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[0]) | uint64(b[1])<<8
- case 4:
- _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24
- case 8:
- _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
- uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
- default:
- panic("syscall: readInt with unsupported size")
- }
-}
+import "syscall"
// ParseDirent parses up to max directory entries in buf,
// appending the names to names. It returns the number of
// bytes consumed from buf, the number of entries added
// to names, and the new names slice.
func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
- origlen := len(buf)
- count = 0
- for max != 0 && len(buf) > 0 {
- reclen, ok := direntReclen(buf)
- if !ok || reclen > uint64(len(buf)) {
- return origlen, count, names
- }
- rec := buf[:reclen]
- buf = buf[reclen:]
- ino, ok := direntIno(rec)
- if !ok {
- break
- }
- if ino == 0 { // File absent in directory.
- continue
- }
- const namoff = uint64(unsafe.Offsetof(Dirent{}.Name))
- namlen, ok := direntNamlen(rec)
- if !ok || namoff+namlen > uint64(len(rec)) {
- break
- }
- name := rec[namoff : namoff+namlen]
- for i, c := range name {
- if c == 0 {
- name = name[:i]
- break
- }
- }
- // Check for useless names before allocating a string.
- if string(name) == "." || string(name) == ".." {
- continue
- }
- max--
- count++
- names = append(names, string(name))
- }
- return origlen - len(buf), count, names
+ return syscall.ParseDirent(buf, max, names)
}