From: "Érico Nogueira" <ericonr@disroot.org>
To: musl@lists.openwall.com
Cc: "Érico Rolim" <erico.erc@gmail.com>
Subject: [musl] [PATCH] extend gethostid beyond a stub
Date: Tue, 20 Apr 2021 16:15:17 -0300 [thread overview]
Message-ID: <20210420191519.23822-3-ericonr@disroot.org> (raw)
In-Reply-To: <20210420191519.23822-1-ericonr@disroot.org>
From: Érico Rolim <erico.erc@gmail.com>
Implement part of the glibc behavior, where the 32-bit identifier stored
in /etc/hostid, if the file exists, is returned. If this file doesn't
contain at least 32 bits or can't be opened for some reason, return 0.
---
src/misc/gethostid.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/src/misc/gethostid.c b/src/misc/gethostid.c
index 25bb35db..d529de9c 100644
--- a/src/misc/gethostid.c
+++ b/src/misc/gethostid.c
@@ -1,6 +1,19 @@
#include <unistd.h>
+#include <stdio.h>
+#include <stdint.h>
long gethostid()
{
- return 0;
+ FILE *f;
+ int32_t rv = 0;
+
+ f = fopen("/etc/hostid", "reb");
+ if (f) {
+ if (fread(&rv, sizeof(rv), 1, f) == 0) {
+ rv = 0;
+ }
+ fclose(f);
+ }
+
+ return rv;
}
--
2.31.1
next prev parent reply other threads:[~2021-04-20 19:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-20 19:15 [musl] [PATCH] add pthread_getname_np function Érico Nogueira
2021-04-20 19:15 ` [musl] [PATCH v2] define __STDC_UTF_{16,32}__ macros Érico Nogueira
2021-04-20 19:15 ` Érico Nogueira [this message]
2021-04-20 19:15 ` [musl] [PATCH] remove unnecessary cast for map_library return Érico Nogueira
2021-04-20 19:15 ` [musl] [PATCH] shorten __aeabi_memset by one instruction Érico Nogueira
2021-04-21 8:24 ` Szabolcs Nagy
2021-04-21 12:32 ` Jesse DeGuire
2021-04-21 17:38 ` Rich Felker
2021-04-21 19:02 ` Érico Nogueira
2021-05-20 13:04 ` [musl] [PATCH] add pthread_getname_np function Stefan Agner
2021-07-09 8:06 ` Michael Forney
-- strict thread matches above, loose matches on Subject: below --
2020-08-03 20:55 [musl] [PATCH] extend gethostid beyond a stub Érico Rolim
2020-08-04 3:02 ` Rich Felker
2020-08-04 7:02 ` Andre McCurdy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210420191519.23822-3-ericonr@disroot.org \
--to=ericonr@disroot.org \
--cc=erico.erc@gmail.com \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).