From 0fd0b765fa84a40446663928db1d3f9a63b7a98d Mon Sep 17 00:00:00 2001 From: Jakub Konka Date: Wed, 24 Jan 2024 12:48:22 +0100 Subject: [PATCH] macho: set __DATA_CONST* segments flags to SG_READ_ONLY --- src/link/MachO.zig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/link/MachO.zig b/src/link/MachO.zig index d4d684cde6..c9f655fd19 100644 --- a/src/link/MachO.zig +++ b/src/link/MachO.zig @@ -2243,7 +2243,8 @@ fn initSegments(self: *MachO) !void { for (slice.items(.header)) |header| { const segname = header.segName(); if (self.getSegmentByName(segname) == null) { - _ = try self.addSegment(segname, .{ .prot = getSegmentProt(segname) }); + const flags: u32 = if (mem.startsWith(u8, segname, "__DATA_CONST")) macho.SG_READ_ONLY else 0; + _ = try self.addSegment(segname, .{ .prot = getSegmentProt(segname), .flags = flags }); } } @@ -3543,6 +3544,7 @@ pub fn addSegment(self: *MachO, name: []const u8, opts: struct { fileoff: u64 = 0, filesize: u64 = 0, prot: macho.vm_prot_t = macho.PROT.NONE, + flags: u32 = 0, }) error{OutOfMemory}!u8 { const gpa = self.base.comp.gpa; const index = @as(u8, @intCast(self.segments.items.len));