From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 15 Sep 2023 07:18:18 +0000 (-0700)
Subject: lscpu: Use 4K buffer size instead of BUFSIZ
X-Git-Tag: v2.39.3~59
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=a711af02d32c0a0a31f1bbb943ffff2e94203e86;p=thirdparty%2Futil-linux.git

lscpu: Use 4K buffer size instead of BUFSIZ

Some lines in /proc/cpuinfo can be large e.g. flags and can then
truncate them in displaying them

BUFSIZ can vary quite a bit  e.g. glibc/linux systems its 8192
but on musl/linux and OSX its 1024, on mingW it is 256, some tests e.g.
x86_64-64cpu-linux6.2.tar.gz has added really long line for cpu flags
line which is greater than 1024 characters and hence this test fails
on musl because lscpu -s reports truncated string

Fixes x86_64-64cpu-linux6.2 tests

Signed-off-by: Khem Raj <raj.khem@gmail.com>

s
---

diff --git a/sys-utils/lscpu-cputype.c b/sys-utils/lscpu-cputype.c
index 3fd5f7a3c6..c8f72ab8a1 100644
--- a/sys-utils/lscpu-cputype.c
+++ b/sys-utils/lscpu-cputype.c
@@ -462,7 +462,9 @@ static int cpuinfo_parse_cache(struct lscpu_cxt *cxt, int keynum, char *data)
 int lscpu_read_cpuinfo(struct lscpu_cxt *cxt)
 {
 	FILE *fp;
-	char buf[BUFSIZ];
+	/* Used to be BUFSIZ which is small on some platforms e.g, musl,
+	 * therefore hardcode to 4K */
+	char buf[4096];
 	size_t i;
 	struct lscpu_cputype *ct;
 	struct cpuinfo_parser _pr = { .cxt = cxt }, *pr = &_pr;