| From 6d6b953cf7d2b8d06e7b0363b1b06cb2e902aa0f Mon Sep 17 00:00:00 2001 |
| From: Simon Rowe <simon.rowe@nutanix.com> |
| Date: Thu, 23 Mar 2023 10:07:02 +0000 |
| Subject: [PATCH] log: 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-freopen_n2.patch |
| Signed-off-by: Simon Rowe <simon.rowe@nutanix.com> |
| --- |
| lib/log/log.c | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| diff --git a/lib/log/log.c b/lib/log/log.c |
| index 7b4d537b3..5f62c048c 100644 |
| --- a/lib/log/log.c |
| +++ b/lib/log/log.c |
| @@ -208,7 +208,11 @@ int reopen_standard_stream(FILE **stream, const char *mode) |
| |
| _check_and_replace_standard_log_streams(old_stream, new_stream); |
| |
| +#ifdef __GLIBC__ |
| *stream = new_stream; |
| +#else |
| + freopen(NULL, mode, *stream); |
| +#endif |
| return 1; |
| } |
| |
| -- |
| 2.22.3 |
| |
