C++ (Cpp) fuse_filehandle_xlate_from_fflags Examples

Example #1

File: fuse_vnops.c Project: 2asoft/freebsd

/*
    struct vnop_open_args {
	struct vnode *a_vp;
	int  a_mode;
	struct ucred *a_cred;
	struct thread *a_td;
	int a_fdidx; / struct file *a_fp;
    };
*/
static int
fuse_vnop_open(struct vop_open_args *ap)
{
	struct vnode *vp = ap->a_vp;
	int mode = ap->a_mode;
	struct thread *td = ap->a_td;
	struct ucred *cred = ap->a_cred;

	fufh_type_t fufh_type;
	struct fuse_vnode_data *fvdat;

	int error, isdir = 0;
	int32_t fuse_open_flags;

	FS_DEBUG2G("inode=%ju mode=0x%x\n", (uintmax_t)VTOI(vp), mode);

	if (fuse_isdeadfs(vp)) {
		return ENXIO;
	}
	fvdat = VTOFUD(vp);

	if (vnode_isdir(vp)) {
		isdir = 1;
	}
	fuse_open_flags = 0;
	if (isdir) {
		fufh_type = FUFH_RDONLY;
	} else {
		fufh_type = fuse_filehandle_xlate_from_fflags(mode);
		/*
		 * For WRONLY opens, force DIRECT_IO.  This is necessary
		 * since writing a partial block through the buffer cache
		 * will result in a read of the block and that read won't
		 * be allowed by the WRONLY open.
		 */
		if (fufh_type == FUFH_WRONLY ||
		    (fvdat->flag & FN_DIRECTIO) != 0)
			fuse_open_flags = FOPEN_DIRECT_IO;
	}

	if (fuse_filehandle_validrw(vp, fufh_type) != FUFH_INVALID) {
		fuse_vnode_open(vp, fuse_open_flags, td);
		return 0;
	}
	error = fuse_filehandle_open(vp, fufh_type, NULL, td, cred);

	return error;
}

Example #2

File: fuse_vnops.c Project: ele7enxxh/dtrace-pf

/*
    struct vnop_close_args {
	struct vnode *a_vp;
	int  a_fflag;
	struct ucred *a_cred;
	struct thread *a_td;
    };
*/
static int
fuse_vnop_close(struct vop_close_args *ap)
{
	struct vnode *vp = ap->a_vp;
	struct ucred *cred = ap->a_cred;
	int fflag = ap->a_fflag;
	fufh_type_t fufh_type;

	fuse_trace_printf_vnop();

	if (fuse_isdeadfs(vp)) {
		return 0;
	}
	if (vnode_isdir(vp)) {
		if (fuse_filehandle_valid(vp, FUFH_RDONLY)) {
			fuse_filehandle_close(vp, FUFH_RDONLY, NULL, cred);
		}
		return 0;
	}
	if (fflag & IO_NDELAY) {
		return 0;
	}
	fufh_type = fuse_filehandle_xlate_from_fflags(fflag);

	if (!fuse_filehandle_valid(vp, fufh_type)) {
		int i;

		for (i = 0; i < FUFH_MAXTYPE; i++)
			if (fuse_filehandle_valid(vp, i))
				break;
		if (i == FUFH_MAXTYPE)
			panic("FUSE: fufh type %d found to be invalid in close"
			      " (fflag=0x%x)\n",
			      fufh_type, fflag);
	}
	if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
		fuse_vnode_savesize(vp, cred);
	}
	return 0;
}

Example #3

File: fuse_vnops.c Project: ele7enxxh/dtrace-pf

/*
    struct vnop_open_args {
	struct vnode *a_vp;
	int  a_mode;
	struct ucred *a_cred;
	struct thread *a_td;
	int a_fdidx; / struct file *a_fp;
    };
*/
static int
fuse_vnop_open(struct vop_open_args *ap)
{
	struct vnode *vp = ap->a_vp;
	int mode = ap->a_mode;
	struct thread *td = ap->a_td;
	struct ucred *cred = ap->a_cred;

	fufh_type_t fufh_type;
	struct fuse_vnode_data *fvdat;

	int error, isdir = 0;

	FS_DEBUG2G("inode=%ju mode=0x%x\n", (uintmax_t)VTOI(vp), mode);

	if (fuse_isdeadfs(vp)) {
		return ENXIO;
	}
	fvdat = VTOFUD(vp);

	if (vnode_isdir(vp)) {
		isdir = 1;
	}
	if (isdir) {
		fufh_type = FUFH_RDONLY;
	} else {
		fufh_type = fuse_filehandle_xlate_from_fflags(mode);
	}

	if (fuse_filehandle_valid(vp, fufh_type)) {
		fuse_vnode_open(vp, 0, td);
		return 0;
	}
	error = fuse_filehandle_open(vp, fufh_type, NULL, td, cred);

	return error;
}