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Message-ID: <20260529171103.12343-2-luis@igalia.com>
Date: Fri, 29 May 2026 18:10:58 +0100
From: Luis Henriques <luis@...lia.com>
To: musl@...ts.openwall.com
Cc: Luis Henriques <luis@...lia.com>
Subject: [RFC PATCH 1/6] add open_tree() linux syscall wrapper
The open_tree() syscall is part of the "new" mount API which was merged into
the linux kernel 5.2.
Signed-off-by: Luis Henriques <luis@...lia.com>
---
include/sys/mount.h | 5 +++++
src/linux/mount.c | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/include/sys/mount.h b/include/sys/mount.h
index 09bd6e9dfeff..c77a81c1b552 100644
--- a/include/sys/mount.h
+++ b/include/sys/mount.h
@@ -64,10 +64,15 @@ extern "C" {
#define MNT_EXPIRE 4
#define UMOUNT_NOFOLLOW 8
+#define OPEN_TREE_CLONE 1
+#define OPEN_TREE_CLOEXEC O_CLOEXEC
+
int mount(const char *, const char *, const char *, unsigned long, const void *);
int umount(const char *);
int umount2(const char *, int);
+int open_tree(int, const char *, unsigned int);
+
#ifdef __cplusplus
}
#endif
diff --git a/src/linux/mount.c b/src/linux/mount.c
index 34e11af12035..080ec9e1222b 100644
--- a/src/linux/mount.c
+++ b/src/linux/mount.c
@@ -15,3 +15,8 @@ int umount2(const char *special, int flags)
{
return syscall(SYS_umount2, special, flags);
}
+
+int open_tree(int dirfd, const char *path, unsigned int flags)
+{
+ return syscall(SYS_open_tree, dirfd, path, flags);
+}
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