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Message-ID: <20240725132056.9151-1-max.oss.09@gmail.com>
Date: Thu, 25 Jul 2024 15:20:45 +0200
From: max.oss.09@...il.com
To: Max Krummenacher <max.krummenacher@...adex.com>
Cc: stable@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
linux-kernel@...r.kernel.org,
linux-serial@...r.kernel.org
Subject: [PATCH] tty: vt: conmakehash: cope with abs_srctree no longer in env
From: Max Krummenacher <max.krummenacher@...adex.com>
conmakehash uses getenv("abs_srctree") from the environment to strip
the absolute path from the generated sources.
However since commit e2bad142bb3d ("kbuild: unexport abs_srctree and
abs_objtree") this environment variable no longer gets set.
Instead use basename() to indicate the used file in a comment of the
generated source file.
Fixes: 3bd85c6c97b2 ("tty: vt: conmakehash: Don't mention the full path of the input in output")
Signed-off-by: Max Krummenacher <max.krummenacher@...adex.com>
---
drivers/tty/vt/conmakehash.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/drivers/tty/vt/conmakehash.c b/drivers/tty/vt/conmakehash.c
index dc2177fec715..82d9db68b2ce 100644
--- a/drivers/tty/vt/conmakehash.c
+++ b/drivers/tty/vt/conmakehash.c
@@ -11,6 +11,8 @@
* Copyright (C) 1995-1997 H. Peter Anvin
*/
+#include <libgen.h>
+#include <linux/limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
@@ -76,8 +78,8 @@ static void addpair(int fp, int un)
int main(int argc, char *argv[])
{
FILE *ctbl;
- const char *tblname, *rel_tblname;
- const char *abs_srctree;
+ const char *tblname;
+ char base_tblname[PATH_MAX];
char buffer[65536];
int fontlen;
int i, nuni, nent;
@@ -102,16 +104,6 @@ int main(int argc, char *argv[])
}
}
- abs_srctree = getenv("abs_srctree");
- if (abs_srctree && !strncmp(abs_srctree, tblname, strlen(abs_srctree)))
- {
- rel_tblname = tblname + strlen(abs_srctree);
- while (*rel_tblname == '/')
- ++rel_tblname;
- }
- else
- rel_tblname = tblname;
-
/* For now we assume the default font is always 256 characters. */
fontlen = 256;
@@ -253,6 +245,8 @@ int main(int argc, char *argv[])
for ( i = 0 ; i < fontlen ; i++ )
nuni += unicount[i];
+ strncpy(base_tblname, tblname, PATH_MAX);
+ base_tblname[PATH_MAX - 1] = 0;
printf("\
/*\n\
* Do not edit this file; it was automatically generated by\n\
@@ -264,7 +258,7 @@ int main(int argc, char *argv[])
#include <linux/types.h>\n\
\n\
u8 dfont_unicount[%d] = \n\
-{\n\t", rel_tblname, fontlen);
+{\n\t", basename(base_tblname), fontlen);
for ( i = 0 ; i < fontlen ; i++ )
{
--
2.42.0
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