Mask high mode bits in archive reader

katiewasnothere · katiewasnothere · commit da0d323ecaed · 2026-07-27T11:11:26.000-07:00
Signed-off-by: Kathryn Baldauf &lt;k_baldauf@apple.com&gt;
diff --git a/Sources/ContainerizationArchive/ArchiveReader.swift b/Sources/ContainerizationArchive/ArchiveReader.swift
@@ -398,7 +398,7 @@ extension ArchiveReader {
     }
 
     private func setFileAttributes(fd: Int32, entry: WriteEntry) {
-        fchmod(fd, entry.permissions)
+        fchmod(fd, entry.permissions & 0o777)
         if let owner = entry.owner, let group = entry.group {
             fchown(fd, owner, group)
         }

Original file line number	Diff line number	Diff line change
`@@ -398,7 +398,7 @@ extension ArchiveReader {`
`398`	`398`	`}`
`399`	`399`
`400`	`400`	`private func setFileAttributes(fd: Int32, entry: WriteEntry) {`
`401`		`- fchmod(fd, entry.permissions)`
	`401`	`+ fchmod(fd, entry.permissions & 0o777)`
`402`	`402`	`if let owner = entry.owner, let group = entry.group {`
`403`	`403`	`fchown(fd, owner, group)`
`404`	`404`	`}`