69 lines
1.9 KiB
Diff
69 lines
1.9 KiB
Diff
From 7c74ad9c349e381decc84c218112ea8e7bcc0b9c Mon Sep 17 00:00:00 2001
|
|
From: Simon Rowe <simon.rowe@nutanix.com>
|
|
Date: Thu, 23 Mar 2023 09:57:59 +0000
|
|
Subject: [PATCH] cmdline: use freopen() to reopen standard streams
|
|
|
|
In glibc stdin, stdout & stderr are variables that can be assigned to
|
|
(https://www.gnu.org/software/libc/manual/html_node/Standard-Streams.html)
|
|
however this not necessarily true of other C libraries.
|
|
|
|
The gentoo musl porting notes
|
|
(https://wiki.gentoo.org/wiki/Musl_porting_notes)
|
|
recommend the substitution of
|
|
|
|
stdX = fopen(...)
|
|
|
|
with
|
|
|
|
freopen(..., stdX)
|
|
|
|
Taken from: https://github.com/gentoo/gentoo/blob/master/sys-fs/lvm2/files/lvm2-2.03.14-r1-fopen-to-freopen.patch
|
|
Signed-off-by: Simon Rowe <simon.rowe@nutanix.com>
|
|
---
|
|
tools/lvmcmdline.c | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
|
|
index 1e12bedca..534368575 100644
|
|
--- a/tools/lvmcmdline.c
|
|
+++ b/tools/lvmcmdline.c
|
|
@@ -3384,7 +3384,11 @@ static int _check_standard_fds(void)
|
|
int err = is_valid_fd(STDERR_FILENO);
|
|
|
|
if (!is_valid_fd(STDIN_FILENO) &&
|
|
+#ifdef __GLIBC__
|
|
!(stdin = fopen(_PATH_DEVNULL, "r"))) {
|
|
+#else
|
|
+ !freopen(_PATH_DEVNULL, "r", stdin)) {
|
|
+#endif
|
|
if (err)
|
|
perror("stdin stream open");
|
|
else
|
|
@@ -3394,7 +3398,11 @@ static int _check_standard_fds(void)
|
|
}
|
|
|
|
if (!is_valid_fd(STDOUT_FILENO) &&
|
|
+#ifdef __GLIBC__
|
|
!(stdout = fopen(_PATH_DEVNULL, "w"))) {
|
|
+#else
|
|
+ !freopen(_PATH_DEVNULL, "w", stdout)) {
|
|
+#endif
|
|
if (err)
|
|
perror("stdout stream open");
|
|
/* else no stdout */
|
|
@@ -3402,7 +3410,11 @@ static int _check_standard_fds(void)
|
|
}
|
|
|
|
if (!is_valid_fd(STDERR_FILENO) &&
|
|
+#ifdef __GLIBC__
|
|
!(stderr = fopen(_PATH_DEVNULL, "w"))) {
|
|
+#else
|
|
+ !freopen(_PATH_DEVNULL, "w", stderr)) {
|
|
+#endif
|
|
printf("stderr stream open: %s\n",
|
|
strerror(errno));
|
|
return 0;
|
|
--
|
|
2.22.3
|
|
|