linux-kernel - [PATCH 01/14] d_path: "\0" is {0,0}, not {0}

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Date:   Wed, 19 May 2021 00:48:48 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Jia He <justin.he@....com>, Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Jonathan Corbet <corbet@....net>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Eric Biggers <ebiggers@...gle.com>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: [PATCH 01/14] d_path: "\0" is {0,0}, not {0}

Single-element array consisting of one NUL is spelled ""...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/d_path.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/d_path.c b/fs/d_path.c
index 270d62133996..01df5dfa1f88 100644
--- a/fs/d_path.c
+++ b/fs/d_path.c
@@ -184,7 +184,7 @@ char *__d_path(const struct path *path,
 	char *res = buf + buflen;
 	int error;
 
-	prepend(&res, &buflen, "\0", 1);
+	prepend(&res, &buflen, "", 1);
 	error = prepend_path(path, root, &res, &buflen);
 
 	if (error < 0)
@@ -201,7 +201,7 @@ char *d_absolute_path(const struct path *path,
 	char *res = buf + buflen;
 	int error;
 
-	prepend(&res, &buflen, "\0", 1);
+	prepend(&res, &buflen, "", 1);
 	error = prepend_path(path, &root, &res, &buflen);
 
 	if (error > 1)
@@ -218,7 +218,7 @@ static int path_with_deleted(const struct path *path,
 			     const struct path *root,
 			     char **buf, int *buflen)
 {
-	prepend(buf, buflen, "\0", 1);
+	prepend(buf, buflen, "", 1);
 	if (d_unlinked(path->dentry)) {
 		int error = prepend(buf, buflen, " (deleted)", 10);
 		if (error)
@@ -341,7 +341,7 @@ static char *__dentry_path(const struct dentry *d, char *buf, int buflen)
 	dentry = d;
 	end = buf + buflen;
 	len = buflen;
-	prepend(&end, &len, "\0", 1);
+	prepend(&end, &len, "", 1);
 	/* Get '/' right */
 	retval = end-1;
 	*retval = '/';
@@ -444,7 +444,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
 		char *cwd = page + PATH_MAX;
 		int buflen = PATH_MAX;
 
-		prepend(&cwd, &buflen, "\0", 1);
+		prepend(&cwd, &buflen, "", 1);
 		error = prepend_path(&pwd, &root, &cwd, &buflen);
 		rcu_read_unlock();
 
-- 
2.11.0