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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef _UAPI_LINUX_AUTO_FS_H#define _UAPI_LINUX_AUTO_FS_H
#include <linux/types.h>#include <linux/limits.h>#ifndef __KERNEL__#include <sys/ioctl.h>#endif /* __KERNEL__ */
#define AUTOFS_PROTO_VERSION 5#define AUTOFS_MIN_PROTO_VERSION 3#define AUTOFS_MAX_PROTO_VERSION 5
#define AUTOFS_PROTO_SUBVERSION 6
/* * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed * back to the kernel via ioctl from userspace. On architectures where 32- and * 64-bit userspace binaries can be executed it's important that the size of * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we * do not break the binary ABI interface by changing the structure size. */#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */typedef unsigned long autofs_wqt_t;#elsetypedef unsigned int autofs_wqt_t;#endif
/* Packet types */#define autofs_ptype_missing 0 /* Missing entry (mount request) */#define autofs_ptype_expire 1 /* Expire entry (umount request) */
struct autofs_packet_hdr { int proto_version; /* Protocol version */ int type; /* Type of packet */};
struct autofs_packet_missing { struct autofs_packet_hdr hdr; autofs_wqt_t wait_queue_token; int len; char name[NAME_MAX+1];};
/* v3 expire (via ioctl) */struct autofs_packet_expire { struct autofs_packet_hdr hdr; int len; char name[NAME_MAX+1];};
#define AUTOFS_IOCTL 0x93
enum { AUTOFS_IOC_READY_CMD = 0x60, AUTOFS_IOC_FAIL_CMD, AUTOFS_IOC_CATATONIC_CMD, AUTOFS_IOC_PROTOVER_CMD, AUTOFS_IOC_SETTIMEOUT_CMD, AUTOFS_IOC_EXPIRE_CMD,};
#define AUTOFS_IOC_READY _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD)#define AUTOFS_IOC_FAIL _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD)#define AUTOFS_IOC_CATATONIC _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD)#define AUTOFS_IOC_PROTOVER _IOR(AUTOFS_IOCTL, \ AUTOFS_IOC_PROTOVER_CMD, int)#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, \ AUTOFS_IOC_SETTIMEOUT_CMD, \ compat_ulong_t)#define AUTOFS_IOC_SETTIMEOUT _IOWR(AUTOFS_IOCTL, \ AUTOFS_IOC_SETTIMEOUT_CMD, \ unsigned long)#define AUTOFS_IOC_EXPIRE _IOR(AUTOFS_IOCTL, \ AUTOFS_IOC_EXPIRE_CMD, \ struct autofs_packet_expire)
/* autofs version 4 and later definitions */
/* Mask for expire behaviour */#define AUTOFS_EXP_NORMAL 0x00#define AUTOFS_EXP_IMMEDIATE 0x01#define AUTOFS_EXP_LEAVES 0x02#define AUTOFS_EXP_FORCED 0x04
#define AUTOFS_TYPE_ANY 0U#define AUTOFS_TYPE_INDIRECT 1U#define AUTOFS_TYPE_DIRECT 2U#define AUTOFS_TYPE_OFFSET 4U
static inline void set_autofs_type_indirect(unsigned int *type){ *type = AUTOFS_TYPE_INDIRECT;}
static inline unsigned int autofs_type_indirect(unsigned int type){ return (type == AUTOFS_TYPE_INDIRECT);}
static inline void set_autofs_type_direct(unsigned int *type){ *type = AUTOFS_TYPE_DIRECT;}
static inline unsigned int autofs_type_direct(unsigned int type){ return (type == AUTOFS_TYPE_DIRECT);}
static inline void set_autofs_type_offset(unsigned int *type){ *type = AUTOFS_TYPE_OFFSET;}
static inline unsigned int autofs_type_offset(unsigned int type){ return (type == AUTOFS_TYPE_OFFSET);}
static inline unsigned int autofs_type_trigger(unsigned int type){ return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);}
/* * This isn't really a type as we use it to say "no type set" to * indicate we want to search for "any" mount in the * autofs_dev_ioctl_ismountpoint() device ioctl function. */static inline void set_autofs_type_any(unsigned int *type){ *type = AUTOFS_TYPE_ANY;}
static inline unsigned int autofs_type_any(unsigned int type){ return (type == AUTOFS_TYPE_ANY);}
/* Daemon notification packet types */enum autofs_notify { NFY_NONE, NFY_MOUNT, NFY_EXPIRE};
/* Kernel protocol version 4 packet types */
/* Expire entry (umount request) */#define autofs_ptype_expire_multi 2
/* Kernel protocol version 5 packet types */
/* Indirect mount missing and expire requests. */#define autofs_ptype_missing_indirect 3#define autofs_ptype_expire_indirect 4
/* Direct mount missing and expire requests */#define autofs_ptype_missing_direct 5#define autofs_ptype_expire_direct 6
/* v4 multi expire (via pipe) */struct autofs_packet_expire_multi { struct autofs_packet_hdr hdr; autofs_wqt_t wait_queue_token; int len; char name[NAME_MAX+1];};
union autofs_packet_union { struct autofs_packet_hdr hdr; struct autofs_packet_missing missing; struct autofs_packet_expire expire; struct autofs_packet_expire_multi expire_multi;};
/* autofs v5 common packet struct */struct autofs_v5_packet { struct autofs_packet_hdr hdr; autofs_wqt_t wait_queue_token; __u32 dev; __u64 ino; __u32 uid; __u32 gid; __u32 pid; __u32 tgid; __u32 len; char name[NAME_MAX+1];};
typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;typedef struct autofs_v5_packet autofs_packet_missing_direct_t;typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
union autofs_v5_packet_union { struct autofs_packet_hdr hdr; struct autofs_v5_packet v5_packet; autofs_packet_missing_indirect_t missing_indirect; autofs_packet_expire_indirect_t expire_indirect; autofs_packet_missing_direct_t missing_direct; autofs_packet_expire_direct_t expire_direct;};
enum { AUTOFS_IOC_EXPIRE_MULTI_CMD = 0x66, /* AUTOFS_IOC_EXPIRE_CMD + 1 */ AUTOFS_IOC_PROTOSUBVER_CMD, AUTOFS_IOC_ASKUMOUNT_CMD = 0x70, /* AUTOFS_DEV_IOCTL_VERSION_CMD - 1 */};
#define AUTOFS_IOC_EXPIRE_MULTI _IOW(AUTOFS_IOCTL, \ AUTOFS_IOC_EXPIRE_MULTI_CMD, int)#define AUTOFS_IOC_PROTOSUBVER _IOR(AUTOFS_IOCTL, \ AUTOFS_IOC_PROTOSUBVER_CMD, int)#define AUTOFS_IOC_ASKUMOUNT _IOR(AUTOFS_IOCTL, \ AUTOFS_IOC_ASKUMOUNT_CMD, int)
#endif /* _UAPI_LINUX_AUTO_FS_H */