[incubator-nuttx] branch master updated: libc/chdir:"PWD" should save absolute path

[jerpelea]

This is an automated email from the ASF dual-hosted git repository.

jerpelea pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new ce3c604  libc/chdir:"PWD" should save absolute path
ce3c604 is described below

commit ce3c604f48c8217fefdccf649da314bbc5901ee6
Author: anjiahao <anjia...@xiaomi.com>
AuthorDate: Fri Feb 11 16:15:01 2022 +0800

    libc/chdir:"PWD" should save absolute path
    
    Signed-off-by: anjiahao <anjia...@xiaomi.com>
---
 libs/libc/unistd/lib_chdir.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/libs/libc/unistd/lib_chdir.c b/libs/libc/unistd/lib_chdir.c
index 20111b6..020027e 100644
--- a/libs/libc/unistd/lib_chdir.c
+++ b/libs/libc/unistd/lib_chdir.c
@@ -100,6 +100,7 @@ int chdir(FAR const char *path)
   struct stat buf;
   char *oldpwd;
   char *alloc;
+  char *abspath;
   int errcode;
   int ret;
 
@@ -151,7 +152,15 @@ int chdir(FAR const char *path)
 
   /* Set the cwd to the input 'path' */
 
-  setenv("PWD", path, TRUE);
+  abspath = realpath(path, NULL);
+  if (abspath == NULL)
+    {
+      errcode = ENOENT;
+      goto errout;
+    }
+
+  setenv("PWD", abspath, TRUE);
+  lib_free(abspath);
   sched_unlock();
   return OK;