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-
- /*
- * LSEEK.C
- *
- * (c)Copyright 1990, Matthew Dillon, All Rights Reserved
- */
-
- #include <stdio.h>
- #include <fcntl.h>
- #include <ioctl.h>
- #include <errno.h>
-
- size_t
- lseek(fd, offset, whence)
- int fd;
- size_t offset;
- int whence;
- {
- _IOFDS *d;
- int n = -1;
-
- if (d = __getfh(fd)) {
- if (d->fd_Exec)
- return((*d->fd_Exec)(d->fd_Fh, IOC_SEEK, offset, whence));
- n = Seek(d->fd_Fh, offset, whence-1);
- if (n >= 0) {
- if (offset || whence != 1)
- n = Seek(d->fd_Fh, 0L, 0);
- return(n);
- }
- }
- return(n);
- }
-
-