name : auto_dev-ioctl.h /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * Copyright 2008 Red Hat, Inc. All rights reserved. * Copyright 2008 Ian Kent <raven@themaw.net> * * This file is part of the Linux kernel and is made available under * the terms of the GNU General Public License, version 2, or at your * option, any later version, incorporated herein by reference. */ #ifndef _LINUX_AUTO_DEV_IOCTL_H #define _LINUX_AUTO_DEV_IOCTL_H #include <linux/auto_fs.h> #include <linux/string.h> #define AUTOFS_DEVICE_NAME "autofs" #define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 #define AUTOFS_DEV_IOCTL_VERSION_MINOR 1 #define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) /* * An ioctl interface for autofs mount point control. */ struct args_protover { __u32 version; }; struct args_protosubver { __u32 sub_version; }; struct args_openmount { __u32 devid; }; struct args_ready { __u32 token; }; struct args_fail { __u32 token; __s32 status; }; struct args_setpipefd { __s32 pipefd; }; struct args_timeout { __u64 timeout; }; struct args_requester { __u32 uid; __u32 gid; }; struct args_expire { __u32 how; }; struct args_askumount { __u32 may_umount; }; struct args_ismountpoint { union { struct args_in { __u32 type; } in; struct args_out { __u32 devid; __u32 magic; } out; }; }; /* * All the ioctls use this structure. * When sending a path size must account for the total length * of the chunk of memory otherwise is is the size of the * structure. */ struct autofs_dev_ioctl { __u32 ver_major; __u32 ver_minor; __u32 size; /* total size of data passed in * including this struct */ __s32 ioctlfd; /* automount command fd */ /* Command parameters */ union { struct args_protover protover; struct args_protosubver protosubver; struct args_openmount openmount; struct args_ready ready; struct args_fail fail; struct args_setpipefd setpipefd; struct args_timeout timeout; struct args_requester requester; struct args_expire expire; struct args_askumount askumount; struct args_ismountpoint ismountpoint; }; char path[0]; }; static __inline__ void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) { memset(in, 0, AUTOFS_DEV_IOCTL_SIZE); in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; in->size = AUTOFS_DEV_IOCTL_SIZE; in->ioctlfd = -1; } enum { /* Get various version info */ AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, AUTOFS_DEV_IOCTL_PROTOVER_CMD, AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, /* Open mount ioctl fd */ AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, /* Close mount ioctl fd */ AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, /* Mount/expire status returns */ AUTOFS_DEV_IOCTL_READY_CMD, AUTOFS_DEV_IOCTL_FAIL_CMD, /* Activate/deactivate autofs mount */ AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, AUTOFS_DEV_IOCTL_CATATONIC_CMD, /* Expiry timeout */ AUTOFS_DEV_IOCTL_TIMEOUT_CMD, /* Get mount last requesting uid and gid */ AUTOFS_DEV_IOCTL_REQUESTER_CMD, /* Check for eligible expire candidates */ AUTOFS_DEV_IOCTL_EXPIRE_CMD, /* Request busy status */ AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, /* Check if path is a mountpoint */ AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, }; #define AUTOFS_DEV_IOCTL_VERSION \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_PROTOVER \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_PROTOSUBVER \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_OPENMOUNT \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_READY \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_FAIL \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_SETPIPEFD \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_CATATONIC \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_TIMEOUT \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_REQUESTER \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_EXPIRE \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_ASKUMOUNT \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ _IOWR(AUTOFS_IOCTL, \ AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) #endif /* _LINUX_AUTO_DEV_IOCTL_H */