1 /* 2 * Copyright 2008 Red Hat, Inc. All rights reserved. 3 * Copyright 2008 Ian Kent <[email protected]> 4 * 5 * This file is part of the Linux kernel and is made available under 6 * the terms of the GNU General Public License, version 2, or at your 7 * option, any later version, incorporated herein by reference. 8 */ 9 10 #ifndef _LINUX_AUTO_DEV_IOCTL_H 11 #define _LINUX_AUTO_DEV_IOCTL_H 12 13 #include <linux/types.h> 14 15 #define AUTOFS_DEVICE_NAME "autofs" 16 17 #define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 18 #define AUTOFS_DEV_IOCTL_VERSION_MINOR 0 19 20 #define AUTOFS_DEVID_LEN 16 21 22 #define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) 23 24 /* 25 * An ioctl interface for autofs mount point control. 26 */ 27 28 /* 29 * All the ioctls use this structure. 30 * When sending a path size must account for the total length 31 * of the chunk of memory otherwise is is the size of the 32 * structure. 33 */ 34 35 struct autofs_dev_ioctl { 36 __u32 ver_major; 37 __u32 ver_minor; 38 __u32 size; /* total size of data passed in 39 * including this struct */ 40 __s32 ioctlfd; /* automount command fd */ 41 42 __u32 arg1; /* Command parameters */ 43 __u32 arg2; 44 45 char path[0]; 46 }; 47 48 static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) 49 { 50 in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; 51 in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; 52 in->size = sizeof(struct autofs_dev_ioctl); 53 in->ioctlfd = -1; 54 in->arg1 = 0; 55 in->arg2 = 0; 56 return; 57 } 58 59 /* 60 * If you change this make sure you make the corresponding change 61 * to autofs-dev-ioctl.c:lookup_ioctl() 62 */ 63 enum { 64 /* Get various version info */ 65 AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, 66 AUTOFS_DEV_IOCTL_PROTOVER_CMD, 67 AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, 68 69 /* Open mount ioctl fd */ 70 AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, 71 72 /* Close mount ioctl fd */ 73 AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, 74 75 /* Mount/expire status returns */ 76 AUTOFS_DEV_IOCTL_READY_CMD, 77 AUTOFS_DEV_IOCTL_FAIL_CMD, 78 79 /* Activate/deactivate autofs mount */ 80 AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, 81 AUTOFS_DEV_IOCTL_CATATONIC_CMD, 82 83 /* Expiry timeout */ 84 AUTOFS_DEV_IOCTL_TIMEOUT_CMD, 85 86 /* Get mount last requesting uid and gid */ 87 AUTOFS_DEV_IOCTL_REQUESTER_CMD, 88 89 /* Check for eligible expire candidates */ 90 AUTOFS_DEV_IOCTL_EXPIRE_CMD, 91 92 /* Request busy status */ 93 AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, 94 95 /* Check if path is a mountpoint */ 96 AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, 97 }; 98 99 #define AUTOFS_IOCTL 0x93 100 101 #define AUTOFS_DEV_IOCTL_VERSION \ 102 _IOWR(AUTOFS_IOCTL, \ 103 AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) 104 105 #define AUTOFS_DEV_IOCTL_PROTOVER \ 106 _IOWR(AUTOFS_IOCTL, \ 107 AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) 108 109 #define AUTOFS_DEV_IOCTL_PROTOSUBVER \ 110 _IOWR(AUTOFS_IOCTL, \ 111 AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) 112 113 #define AUTOFS_DEV_IOCTL_OPENMOUNT \ 114 _IOWR(AUTOFS_IOCTL, \ 115 AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) 116 117 #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ 118 _IOWR(AUTOFS_IOCTL, \ 119 AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) 120 121 #define AUTOFS_DEV_IOCTL_READY \ 122 _IOWR(AUTOFS_IOCTL, \ 123 AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) 124 125 #define AUTOFS_DEV_IOCTL_FAIL \ 126 _IOWR(AUTOFS_IOCTL, \ 127 AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) 128 129 #define AUTOFS_DEV_IOCTL_SETPIPEFD \ 130 _IOWR(AUTOFS_IOCTL, \ 131 AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) 132 133 #define AUTOFS_DEV_IOCTL_CATATONIC \ 134 _IOWR(AUTOFS_IOCTL, \ 135 AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) 136 137 #define AUTOFS_DEV_IOCTL_TIMEOUT \ 138 _IOWR(AUTOFS_IOCTL, \ 139 AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) 140 141 #define AUTOFS_DEV_IOCTL_REQUESTER \ 142 _IOWR(AUTOFS_IOCTL, \ 143 AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) 144 145 #define AUTOFS_DEV_IOCTL_EXPIRE \ 146 _IOWR(AUTOFS_IOCTL, \ 147 AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) 148 149 #define AUTOFS_DEV_IOCTL_ASKUMOUNT \ 150 _IOWR(AUTOFS_IOCTL, \ 151 AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) 152 153 #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ 154 _IOWR(AUTOFS_IOCTL, \ 155 AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) 156 157 #endif /* _LINUX_AUTO_DEV_IOCTL_H */ 158