55 lines
2.2 KiB
Diff
55 lines
2.2 KiB
Diff
From 420c77320b59faa88150743ac127fe14c32e2c89 Mon Sep 17 00:00:00 2001
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From: Jeremy Drake <github@jdrake.com>
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Date: Thu, 22 Jul 2021 11:59:16 -0700
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Subject: [PATCH 27/N] Cygwin: make option for native inner link handling.
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This code has been causing issues with SUBST and mapped network drives,
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so add an option (defaulted to on) which can be used to disable it where
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needed. MSYS=nonativeinnerlinks
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---
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winsup/cygwin/environ.cc | 1 +
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winsup/cygwin/globals.cc | 1 +
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winsup/cygwin/path.cc | 5 +++--
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3 files changed, 5 insertions(+), 2 deletions(-)
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diff --git a/winsup/cygwin/environ.cc b/winsup/cygwin/environ.cc
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index b9600ef..06b1111 100644
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--- a/winsup/cygwin/environ.cc
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+++ b/winsup/cygwin/environ.cc
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@@ -123,6 +123,7 @@ static struct parse_thing
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{"error_start", {func: error_start_init}, isfunc, NULL, {{0}, {0}}},
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{"export", {&export_settings}, setbool, NULL, {{false}, {true}}},
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{"glob", {func: glob_init}, isfunc, NULL, {{0}, {s: "normal"}}},
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+ {"nativeinnerlinks", {&nativeinnerlinks}, setbool, NULL, {{false}, {true}}},
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{"pipe_byte", {&pipe_byte}, setbool, NULL, {{false}, {true}}},
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{"proc_retry", {func: set_proc_retry}, isfunc, NULL, {{0}, {5}}},
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{"reset_com", {&reset_com}, setbool, NULL, {{false}, {true}}},
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diff --git a/winsup/cygwin/globals.cc b/winsup/cygwin/globals.cc
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index 79f9476..30a2da1 100644
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--- a/winsup/cygwin/globals.cc
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+++ b/winsup/cygwin/globals.cc
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@@ -74,6 +74,7 @@ bool wincmdln = true;
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winsym_t allow_winsymlinks = WSYM_deepcopy;
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bool disable_pcon;
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bool winjitdebug = false;
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+bool nativeinnerlinks = true;
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/* Taken from BSD libc:
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This variable is zero until a process has created a pthread. It is used
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diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
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index 4f37146..56ac7d7 100644
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--- a/winsup/cygwin/path.cc
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+++ b/winsup/cygwin/path.cc
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@@ -3850,8 +3850,9 @@ restart:
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differ, return the final path as symlink content and set symlen
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to a negative value. This forces path_conv::check to restart
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symlink evaluation with the new path. */
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- if ((pc_flags () & (PC_SYM_FOLLOW | PC_SYM_NOFOLLOW_REP))
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- == PC_SYM_FOLLOW)
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+ if (nativeinnerlinks
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+ && (pc_flags () & (PC_SYM_FOLLOW | PC_SYM_NOFOLLOW_REP))
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+ == PC_SYM_FOLLOW)
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{
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PWCHAR fpbuf = tp.w_get ();
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DWORD ret;
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