Index: uspace/lib/posix/source/stdio.c
===================================================================
--- uspace/lib/posix/source/stdio.c	(revision 80bee816e04fc95402bcb3439cb9262667a14574)
+++ uspace/lib/posix/source/stdio.c	(revision ff381a79ad697b23cc01e3f8a66966d2d2cbd7dc)
@@ -315,11 +315,5 @@
 int posix_fflush(FILE *stream)
 {
-	int rc = fflush(stream);
-	if (rc < 0) {
-		errno = -rc;
-		return EOF;
-	} else {
-		return 0;
-	}
+	return negerrno(fflush, stream);
 }
 
@@ -351,4 +345,6 @@
 {
 	ssize_t wr = write(*(int *) fd, str, size);
+	if (wr < 0)
+		return errno;
 	return str_nlength(str, wr);
 }
@@ -579,23 +575,5 @@
 int posix_remove(const char *path)
 {
-	struct stat st;
-	int rc = stat(path, &st);
-	
-	if (rc != EOK) {
-		errno = -rc;
-		return -1;
-	}
-	
-	if (st.is_directory) {
-		rc = rmdir(path);
-	} else {
-		rc = unlink(path);
-	}
-	
-	if (rc != EOK) {
-		errno = -rc;
-		return -1;
-	}
-	return 0;
+	return negerrno(remove, path);
 }
 
@@ -609,5 +587,5 @@
 int posix_rename(const char *old, const char *new)
 {
-	return errnify(rename, old, new);
+	return negerrno(rename, old, new);
 }