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From 86c9a5610e3333ad6aaadb1ac1e8b5a2c948d119 Mon Sep 17 00:00:00 2001
From: Robert Yang <liezhi.yang@windriver.com>
Date: Mon, 25 Nov 2019 18:46:45 +0800
Subject: [PATCH] realpath.c: Remove trailing slashes
Linux system's realpath() remove trailing slashes, but pseudo's doesn't, need
make them identical.
E.g., the following code (rel.c) prints '/tmp' with system's realpath, but
pseudo's realpath prints '/tmp/':
#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
int main() {
char out[PATH_MAX];
printf("%s\n", realpath("/tmp/", out));
return 0;
}
$ bitbake base-passwd -cdevshell # For pseudo env
$ gcc rel.c
$ ./a.out
/tmp/ (but should be /tmp)
This patch fixes the problem.
Upstream-Status: Submitted [https://lists.yoctoproject.org/g/poky/message/11879]
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---
ports/unix/guts/realpath.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/ports/unix/guts/realpath.c b/ports/unix/guts/realpath.c
--- a/ports/unix/guts/realpath.c
+++ b/ports/unix/guts/realpath.c
@@ -14,7 +14,14 @@
errno = ENAMETOOLONG;
return NULL;
}
- if ((len = strlen(rname)) >= pseudo_sys_path_max()) {
+ len = strlen(rname);
+ char *ep = rname + len - 1;
+ while (ep > rname && *ep == '/') {
+ --len;
+ *(ep--) = '\0';
+ }
+
+ if (len >= pseudo_sys_path_max()) {
errno = ENAMETOOLONG;
return NULL;
}
--
2.7.4
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