Differential D23042 Diff 66512 head/sys/kern/sys_generic.c

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head/sys/kern/sys_generic.c

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break;		break;
}		}
if (fp != NULL)		if (fp != NULL)
fdrop(fp, td);		fdrop(fp, td);
return (error);		return (error);
}		}

int		int
		sys_posix_fallocate(struct thread td, struct posix_fallocate_args uap)
		{
		int error;

		error = kern_posix_fallocate(td, uap->fd, uap->offset, uap->len);
		return (kern_posix_error(td, error));
		}

		int
		kern_posix_fallocate(struct thread *td, int fd, off_t offset, off_t len)
		{
		struct file *fp;
		int error;

		AUDIT_ARG_FD(fd);
		if (offset < 0 \|\| len <= 0)
		return (EINVAL);
		/* Check for wrap. */
		if (offset > OFF_MAX - len)
		return (EFBIG);
		AUDIT_ARG_FD(fd);
		error = fget(td, fd, &cap_pwrite_rights, &fp);
		if (error != 0)
		return (error);
		AUDIT_ARG_FILE(td->td_proc, fp);
		if ((fp->f_ops->fo_flags & DFLAG_SEEKABLE) == 0) {
		error = ESPIPE;
		goto out;
		}
		if ((fp->f_flag & FWRITE) == 0) {
		error = EBADF;
		goto out;
		}

		error = fo_fallocate(fp, offset, len, td);
		out:
		fdrop(fp, td);
		return (error);
		}

		int
poll_no_poll(int events)		poll_no_poll(int events)
{		{
/*		/*
* Return true for read/write. If the user asked for something		* Return true for read/write. If the user asked for something
* special, return POLLNVAL, so that clients have a way of		* special, return POLLNVAL, so that clients have a way of
* determining reliably whether or not the extended		* determining reliably whether or not the extended
* functionality is present without hard-coding knowledge		* functionality is present without hard-coding knowledge
* of specific filesystem implementations.		* of specific filesystem implementations.
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