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Message-ID: <20240222-mango-batterie-505564cecb69@brauner>
Date: Thu, 22 Feb 2024 14:23:06 +0100
From: Christian Brauner <brauner@...nel.org>
To: Luis Henriques <lhenriques@...e.de>,
Zorro Lang <zlang@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
linux-ext4@...r.kernel.org,
fstests@...r.kernel.org
Subject: [PATCH] vfs: fix check for tmpfile support
When ext4 is used with quota support the test fails with EINVAL because
it is run after we idmapped the mount. If the caller's fs{g,u}ids aren't
mapped then we fail and log a misleading error. Move the checks for
tmpfile support right at the beginning of the test in all tests.
Reported-by: Luis Henriques <lhenriques@...e.de>
Link: https://lore.kernel.org/r/20240222-knast-reifen-953312ce17a9@brauner
Signed-off-by: Christian Brauner <brauner@...nel.org>
---
src/vfs/idmapped-mounts.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/src/vfs/idmapped-mounts.c b/src/vfs/idmapped-mounts.c
index 547182fe..e490f3d7 100644
--- a/src/vfs/idmapped-mounts.c
+++ b/src/vfs/idmapped-mounts.c
@@ -3815,6 +3815,8 @@ int tcore_setgid_create_idmapped(const struct vfstest_info *info)
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -3838,8 +3840,6 @@ int tcore_setgid_create_idmapped(const struct vfstest_info *info)
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
pid = fork();
if (pid < 0) {
log_stderr("failure: fork");
@@ -3991,6 +3991,8 @@ int tcore_setgid_create_idmapped_in_userns(const struct vfstest_info *info)
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -4014,8 +4016,6 @@ int tcore_setgid_create_idmapped_in_userns(const struct vfstest_info *info)
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
pid = fork();
if (pid < 0) {
log_stderr("failure: fork");
@@ -7715,6 +7715,8 @@ static int setgid_create_umask_idmapped(const struct vfstest_info *info)
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -7738,8 +7740,6 @@ static int setgid_create_umask_idmapped(const struct vfstest_info *info)
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
pid = fork();
if (pid < 0) {
log_stderr("failure: fork");
@@ -7929,6 +7929,8 @@ static int setgid_create_umask_idmapped_in_userns(const struct vfstest_info *inf
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -7952,8 +7954,6 @@ static int setgid_create_umask_idmapped_in_userns(const struct vfstest_info *inf
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
/*
* Below we verify that setgid inheritance for a newly created file or
* directory works correctly. As part of this we need to verify that
@@ -8163,6 +8163,8 @@ static int setgid_create_acl_idmapped(const struct vfstest_info *info)
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -8186,8 +8188,6 @@ static int setgid_create_acl_idmapped(const struct vfstest_info *info)
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
pid = fork();
if (pid < 0) {
log_stderr("failure: fork");
@@ -8518,6 +8518,8 @@ static int setgid_create_acl_idmapped_in_userns(const struct vfstest_info *info)
goto out;
}
+ supported = openat_tmpfile_supported(info->t_dir1_fd);
+
/* Changing mount properties on a detached mount. */
attr.userns_fd = get_userns_fd(0, 10000, 10000);
if (attr.userns_fd < 0) {
@@ -8541,8 +8543,6 @@ static int setgid_create_acl_idmapped_in_userns(const struct vfstest_info *info)
goto out;
}
- supported = openat_tmpfile_supported(open_tree_fd);
-
/*
* Below we verify that setgid inheritance for a newly created file or
* directory works correctly. As part of this we need to verify that
--
2.43.0
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