80 lines
2.4 KiB
Diff
80 lines
2.4 KiB
Diff
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From cd6bed5d22ea9cb7bae2be134d5d04433fc8e313 Mon Sep 17 00:00:00 2001
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From: Philip McGrath <philip@philipmcgrath.com>
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Date: Mon, 11 Apr 2022 20:43:18 -0400
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Subject: [PATCH] patch zuo_process for "/bin/sh" on Guix
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If:
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1. The nonstandard but ubiquitous macro `_PATH_BSHELL` from
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<paths.h> is defined; and
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2. `zuo_process` is called with the exact path "/bin/sh"; and
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3. The path specified by `_PATH_BSHELL` exists;
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then `zuo_process` will execute the file specified by `_PATH_BSHELL`
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instead of "/bin/sh".
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Checking that the path specified by `_PATH_BSHELL` exists safeguards
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against obscure errors if attempting to use the patched Zuo
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or derived executables in non-Guix envoronments.
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---
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Notes:
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See also chez-scheme-bin-sh.patch, racket-chez-scheme-bin-sh.patch,
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racket-rktio-bin-sh.patch.
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zuo.c | 20 ++++++++++++++++++--
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1 file changed, 18 insertions(+), 2 deletions(-)
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diff --git a/zuo.c b/zuo.c
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index d4163eb..bfc5484 100644
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--- a/zuo.c
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+++ b/zuo.c
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@@ -16,6 +16,7 @@
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#include <string.h>
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#include <ctype.h>
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#ifdef ZUO_UNIX
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+# include <paths.h> /* PATCHED for Guix */
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# include <fcntl.h>
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# include <unistd.h>
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# include <errno.h>
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@@ -5949,7 +5950,10 @@ static void zuo_pipe(zuo_raw_handle_t *_r, zuo_raw_handle_t *_w)
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zuo_t *zuo_process(zuo_t *command_and_args)
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{
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const char *who = "process";
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- zuo_t *command = _zuo_car(command_and_args);
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+ /* BEGIN PATCH for Guix */
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+ zuo_t *_guix_orig_command = _zuo_car(command_and_args);
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+ zuo_t *command;
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+ /* END PATCH for Guix */
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zuo_t *args = _zuo_cdr(command_and_args), *rev_args = z.o_null;
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zuo_t *options = z.o_empty_hash, *opt;
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zuo_t *dir, *l, *p_handle, *result;
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@@ -5960,7 +5964,19 @@ zuo_t *zuo_process(zuo_t *command_and_args)
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void *env;
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int as_child, exact_cmdline;
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- check_path_string(who, command);
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+ /* BEGIN PATCH for Guix */
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+ check_path_string(who, _guix_orig_command);
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+#if defined(_PATH_BSHELL)
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+ command =
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+ ((z.o_false == zuo_string_eql(_guix_orig_command, zuo_string("/bin/sh")))
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+ || (z.o_false == zuo_stat(zuo_string(_PATH_BSHELL), z.o_false, z.o_true)))
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+ ? _guix_orig_command
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+ : zuo_string(_PATH_BSHELL);
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+#else
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+ command = _guix_orig_command;
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+#endif
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+ /* END PATCH for Guix */
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+
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for (l = args; l->tag == zuo_pair_tag; l = _zuo_cdr(l)) {
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zuo_t *a = _zuo_car(l);
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if (a == z.o_null) {
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base-commit: a0faa82c8383d206aa38d21462ca4ae699851a0b
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--
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2.41.0
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