nfs_mount4.h

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/*
 * We want to be able to compile mount on old kernels in such a way
 * that the binary will work well on more recent kernels.
 * Thus, if necessary we teach nfsmount.c the structure of new fields
 * that will come later.
 *
 * Moreover, the new kernel includes conflict with glibc includes
 * so it is easiest to ignore the kernel altogether (at compile time).
 */

#define NFS_MOUNT_VERSION	4

struct nfs2_fh {
        char                    data[32];
};
struct nfs3_fh {
        unsigned short          size;
        unsigned char           data[64];
};

struct nfs_mount_data {
	int		version;		/* 1 */
	int		fd;			/* 1 */
	struct nfs2_fh	old_root;		/* 1 */
	int		flags;			/* 1 */
	int		rsize;			/* 1 */
	int		wsize;			/* 1 */
	int		timeo;			/* 1 */
	int		retrans;		/* 1 */
	int		acregmin;		/* 1 */
	int		acregmax;		/* 1 */
	int		acdirmin;		/* 1 */
	int		acdirmax;		/* 1 */
	struct sockaddr_in addr;		/* 1 */
	char		hostname[256];		/* 1 */
	int		namlen;			/* 2 */
	unsigned int	bsize;			/* 3 */
	struct nfs3_fh	root;			/* 4 */
};

/* bits in the flags field */

#define NFS_MOUNT_SOFT		0x0001	/* 1 */
#define NFS_MOUNT_INTR		0x0002	/* 1 */
#define NFS_MOUNT_SECURE	0x0004	/* 1 */
#define NFS_MOUNT_POSIX		0x0008	/* 1 */
#define NFS_MOUNT_NOCTO		0x0010	/* 1 */
#define NFS_MOUNT_NOAC		0x0020	/* 1 */
#define NFS_MOUNT_TCP		0x0040	/* 2 */
#define NFS_MOUNT_VER3		0x0080	/* 3 */
#define NFS_MOUNT_KERBEROS	0x0100	/* 3 */
#define NFS_MOUNT_NONLM		0x0200	/* 3 */
#define NFS_MOUNT_BROKEN_SUID	0x0400	/* 4 */