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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests/pidfd: expand common pidfd header
Move more infrastructure to the pidfd header.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-9-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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tools/testing/selftests/pidfd/pidfd.h
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tools/testing/selftests/pidfd/pidfd.h
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#include <stdlib.h>
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#include <string.h>
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#include <syscall.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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···
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#ifndef PIDFD_SELF_PROCESS
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#define PIDFD_SELF_PROCESS PIDFD_SELF_THREAD_GROUP
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#endif
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#ifndef PIDFS_IOCTL_MAGIC
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#define PIDFS_IOCTL_MAGIC 0xFF
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#endif
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#ifndef PIDFD_GET_CGROUP_NAMESPACE
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#define PIDFD_GET_CGROUP_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 1)
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#endif
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#ifndef PIDFD_GET_IPC_NAMESPACE
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#define PIDFD_GET_IPC_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 2)
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#endif
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#ifndef PIDFD_GET_MNT_NAMESPACE
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#define PIDFD_GET_MNT_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 3)
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#endif
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#ifndef PIDFD_GET_NET_NAMESPACE
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#define PIDFD_GET_NET_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 4)
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#endif
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#ifndef PIDFD_GET_PID_NAMESPACE
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#define PIDFD_GET_PID_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 5)
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#endif
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#ifndef PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE
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#define PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 6)
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#endif
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#ifndef PIDFD_GET_TIME_NAMESPACE
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#define PIDFD_GET_TIME_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 7)
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#endif
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#ifndef PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE
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#define PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 8)
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#endif
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#ifndef PIDFD_GET_USER_NAMESPACE
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#define PIDFD_GET_USER_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 9)
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#endif
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#ifndef PIDFD_GET_UTS_NAMESPACE
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#define PIDFD_GET_UTS_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 10)
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#endif
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#ifndef PIDFD_GET_INFO
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#define PIDFD_GET_INFO _IOWR(PIDFS_IOCTL_MAGIC, 11, struct pidfd_info)
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#endif
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#ifndef PIDFD_INFO_PID
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#define PIDFD_INFO_PID (1UL << 0) /* Always returned, even if not requested */
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#endif
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#ifndef PIDFD_INFO_CREDS
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#define PIDFD_INFO_CREDS (1UL << 1) /* Always returned, even if not requested */
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#endif
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#ifndef PIDFD_INFO_CGROUPID
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#define PIDFD_INFO_CGROUPID (1UL << 2) /* Always returned if available, even if not requested */
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#endif
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struct pidfd_info {
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__u64 mask;
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__u64 cgroupid;
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__u32 pid;
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__u32 tgid;
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__u32 ppid;
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__u32 ruid;
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__u32 rgid;
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__u32 euid;
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__u32 egid;
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__u32 suid;
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__u32 sgid;
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__u32 fsuid;
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__u32 fsgid;
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__u32 spare0[1];
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};
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/*
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* The kernel reserves 300 pids via RESERVED_PIDS in kernel/pid.c
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tools/testing/selftests/pidfd/pidfd_open_test.c
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tools/testing/selftests/pidfd/pidfd_open_test.c
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#include "pidfd.h"
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#include "../kselftest.h"
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#ifndef PIDFS_IOCTL_MAGIC
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#define PIDFS_IOCTL_MAGIC 0xFF
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#endif
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#ifndef PIDFD_GET_INFO
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#define PIDFD_GET_INFO _IOWR(PIDFS_IOCTL_MAGIC, 11, struct pidfd_info)
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#define PIDFD_INFO_CGROUPID (1UL << 0)
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struct pidfd_info {
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__u64 mask;
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__u64 cgroupid;
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__u32 pid;
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__u32 tgid;
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__u32 ppid;
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__u32 ruid;
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__u32 rgid;
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__u32 euid;
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__u32 egid;
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__u32 suid;
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__u32 sgid;
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__u32 fsuid;
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__u32 fsgid;
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__u32 spare0[1];
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};
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#endif
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static int safe_int(const char *numstr, int *converted)
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{
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char *err = NULL;
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tools/testing/selftests/pidfd/pidfd_setns_test.c
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tools/testing/selftests/pidfd/pidfd_setns_test.c
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include "pidfd.h"
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#include "../kselftest_harness.h"
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#ifndef PIDFS_IOCTL_MAGIC
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#define PIDFS_IOCTL_MAGIC 0xFF
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#endif
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#ifndef PIDFD_GET_CGROUP_NAMESPACE
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#define PIDFD_GET_CGROUP_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 1)
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#endif
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#ifndef PIDFD_GET_IPC_NAMESPACE
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#define PIDFD_GET_IPC_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 2)
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#endif
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#ifndef PIDFD_GET_MNT_NAMESPACE
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#define PIDFD_GET_MNT_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 3)
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#endif
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#ifndef PIDFD_GET_NET_NAMESPACE
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#define PIDFD_GET_NET_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 4)
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#endif
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#ifndef PIDFD_GET_PID_NAMESPACE
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#define PIDFD_GET_PID_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 5)
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#endif
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#ifndef PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE
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#define PIDFD_GET_PID_FOR_CHILDREN_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 6)
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#endif
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#ifndef PIDFD_GET_TIME_NAMESPACE
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#define PIDFD_GET_TIME_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 7)
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#endif
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#ifndef PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE
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#define PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 8)
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#endif
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#ifndef PIDFD_GET_USER_NAMESPACE
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#define PIDFD_GET_USER_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 9)
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#endif
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#ifndef PIDFD_GET_UTS_NAMESPACE
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#define PIDFD_GET_UTS_NAMESPACE _IO(PIDFS_IOCTL_MAGIC, 10)
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#endif
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enum {
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PIDFD_NS_USER,