[pseudo][PATCH] test-openat: Consider device as well as inode number

Mike Crowe
2021-08-11T17:14:08Z

It just so happens that my /home/mac and /home directories have the same
inode number but on different filesystems.

This means that test-openat fails with "Recursion failed!" even when run
without pseudo.

Let's consider both the device number and the inode number before
assuming that we've found the same directory again.

Signed-off-by: Mike Crowe <mac@mcrowe.com>
---
test/test-openat.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/test-openat.c b/test/test-openat.c
index b710285..df6655a 100644
--- a/test/test-openat.c
+++ b/test/test-openat.c
@@ -25,11 +25,13 @@ int main () {
int fd, dir_fd;
struct stat st;
ino_t ino;
+ dev_t dev;
char *path;

fd = openat(AT_FDCWD, ".", O_DIRECTORY, 0);
fstat(fd, &st);
ino = st.st_ino;
+ dev = st.st_dev;

while (1) {
path = path_of(fd);
@@ -37,7 +39,7 @@ int main () {

dir_fd = openat(fd, "../", O_DIRECTORY, 0);
fstat(dir_fd, &st);
- if (st.st_ino == ino) {
+ if (st.st_ino == ino && st.st_dev == dev) {
if (strcmp(path, "/") == 0) {
//puts("Reached top of tree");
return 0;
@@ -49,6 +51,7 @@ int main () {

free (path);
ino = st.st_ino;
+ dev = st.st_dev;
fd = dir_fd;
}
return 0;
--
2.30.2