77 lines
2.3 KiB
Diff
77 lines
2.3 KiB
Diff
From f86370295c5bb14d4bb93d0ccfa37a2b79f19f25 Mon Sep 17 00:00:00 2001
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From: Philip McGrath <philip@philipmcgrath.com>
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Date: Wed, 24 Aug 2022 19:55:14 -0400
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Subject: [PATCH] Chez Scheme: patch s_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. The path specified by `_PATH_BSHELL` exists;
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then `s_process` will call `execl` with the file specified by
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`_PATH_BSHELL` 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 stand-alone executables
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built by the patched Racket in non-Guix envoronments.
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This patch does not change the behavior of `s_system`, which relies
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on `system` from the C library.
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---
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racket/src/ChezScheme/c/prim5.c | 21 ++++++++++++++++++++-
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1 file changed, 20 insertions(+), 1 deletion(-)
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diff --git a/racket/src/ChezScheme/c/prim5.c b/racket/src/ChezScheme/c/prim5.c
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index 82bbf8d687..be8f603447 100644
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--- a/racket/src/ChezScheme/c/prim5.c
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+++ b/racket/src/ChezScheme/c/prim5.c
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@@ -27,6 +27,12 @@
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#include <sys/resource.h>
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#endif
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+/* BEGIN PATCH for Guix */
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+#ifndef WIN32
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+# include <paths.h>
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+#endif
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+/* END PATCH for Guix */
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+
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/* locally defined functions */
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static INT s_errno(void);
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static IBOOL s_addr_in_heap(uptr x);
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@@ -861,6 +867,17 @@ static ptr s_process(char *s, IBOOL stderrp) {
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INT tofds[2], fromfds[2], errfds[2];
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struct sigaction act, oint_act;
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+ /* BEGIN PATCH for Guix */
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+#if defined(_PATH_BSHELL)
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+ struct stat guix_stat_buf;
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+ char *guix_sh =
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+ (0 == stat(_PATH_BSHELL, &guix_stat_buf))
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+ ? _PATH_BSHELL
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+ : "/bin/sh";
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+#else /* _PATH_BSHELL */
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+ char *guix_sh = "/bin/sh";
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+#endif
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+ /* END PATCH for Guix */
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if (pipe(tofds)) S_error("process","cannot open pipes");
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if (pipe(fromfds)) {
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@@ -897,7 +914,9 @@ static ptr s_process(char *s, IBOOL stderrp) {
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}
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}
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#endif /* __GNU__ Hurd */
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- execl("/bin/sh", "/bin/sh", "-c", s, NULL);
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+ /* BEGIN PATCH for Guix */
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+ execl(guix_sh, guix_sh, "-c", s, NULL);
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+ /* END PATCH for Guix */
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_exit(1) /* only if execl fails */;
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/*NOTREACHED*/
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} else {
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base-commit: 87eee6e2adb8c6bc11e60619c706fa6295096085
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--
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2.32.0
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