mirror of
https://github.com/torvalds/linux.git
synced 2025-12-07 20:06:24 +00:00
edd3cb05c0
With the introduction of clone3 in commit 7f192e3cd3 ("fork: add
clone3") the effective bit width of clone_flags on all architectures was
increased from 32-bit to 64-bit, with a new type of u64 for the flags.
However, for most consumers of clone_flags the interface was not
changed from the previous type of unsigned long.
While this works fine as long as none of the new 64-bit flag bits
(CLONE_CLEAR_SIGHAND and CLONE_INTO_CGROUP) are evaluated, this is still
undesirable in terms of the principle of least surprise.
Thus, this commit fixes all relevant interfaces of callees to
sys_clone3/copy_process (excluding the architecture-specific
copy_thread) to consistently pass clone_flags as u64, so that
no truncation to 32-bit integers occurs on 32-bit architectures.
Signed-off-by: Simon Schuster <schuster.simon@siemens-energy.com>
Link: https://lore.kernel.org/20250901-nios2-implement-clone3-v2-2-53fcf5577d57@siemens-energy.com
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
26 lines
757 B
C
26 lines
757 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _NAMESPACE_H_
|
|
#define _NAMESPACE_H_
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/cleanup.h>
|
|
#include <linux/err.h>
|
|
|
|
struct mnt_namespace;
|
|
struct fs_struct;
|
|
struct user_namespace;
|
|
struct ns_common;
|
|
|
|
extern struct mnt_namespace *copy_mnt_ns(u64, struct mnt_namespace *,
|
|
struct user_namespace *, struct fs_struct *);
|
|
extern void put_mnt_ns(struct mnt_namespace *ns);
|
|
DEFINE_FREE(put_mnt_ns, struct mnt_namespace *, if (!IS_ERR_OR_NULL(_T)) put_mnt_ns(_T))
|
|
extern struct ns_common *from_mnt_ns(struct mnt_namespace *);
|
|
|
|
extern const struct file_operations proc_mounts_operations;
|
|
extern const struct file_operations proc_mountinfo_operations;
|
|
extern const struct file_operations proc_mountstats_operations;
|
|
|
|
#endif
|
|
#endif
|