mirror of
https://github.com/NixOS/mobile-nixos.git
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59 lines
1.9 KiB
Diff
59 lines
1.9 KiB
Diff
From 6dab6fb118ece6c47e0407d4a7aa80e842b3747d Mon Sep 17 00:00:00 2001
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From: Samuel Dionne-Riel <samuel@dionne-riel.com>
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Date: Mon, 15 Feb 2021 23:18:06 -0500
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Subject: [PATCH] [mobile-nixos] Strip store path hashes when saving debug
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information
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This is required for breaking the dependency on the source files, as
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`nuke-refs` break the irep otherwise.
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This patch could be applied strictly to an `mrbc` used to compile for
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the initrd, rather than always.
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---
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src/debug.c | 15 ++++++++++++++-
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1 file changed, 14 insertions(+), 1 deletion(-)
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diff --git a/src/debug.c b/src/debug.c
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index b44c7d10..022d32bb 100644
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--- a/src/debug.c
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+++ b/src/debug.c
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@@ -3,6 +3,8 @@
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#include <mruby/irep.h>
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#include <mruby/debug.h>
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+#define NIX_STORE "/nix/store/"
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+
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static mrb_irep_debug_info_file*
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get_file(mrb_irep_debug_info *info, uint32_t pc)
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{
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@@ -130,6 +132,7 @@ mrb_debug_info_append_file(mrb_state *mrb, mrb_irep_debug_info *d,
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uint32_t file_pc_count;
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size_t fn_len;
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uint32_t i;
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+ char *obfuscated_filename;
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if (!d) return NULL;
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if (start_pos == end_pos) return NULL;
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@@ -156,7 +159,17 @@ mrb_debug_info_append_file(mrb_state *mrb, mrb_irep_debug_info *d,
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d->pc_count = end_pos;
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fn_len = strlen(filename);
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- f->filename_sym = mrb_intern(mrb, filename, fn_len);
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+ obfuscated_filename = strdup(filename);
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+
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+ // filename starts with the string to obfuscate?
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+ if (strstr(obfuscated_filename, NIX_STORE) == obfuscated_filename) {
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+ // Transforms:
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+ // /nix/store/00000bgcw03vv7m7407w22brc0g638dw-source
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+ // Into:
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+ // /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-source
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+ strncpy(obfuscated_filename, NIX_STORE "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee", 32 + strlen(NIX_STORE));
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+ }
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+ f->filename_sym = mrb_intern(mrb, obfuscated_filename, fn_len);
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f->line_type = select_line_type(lines + start_pos, end_pos - start_pos);
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f->lines.ptr = NULL;
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--
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2.29.2
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