Unix |
Unix v6 |
|
 |
seek(2) |
 |
seek move read/write pointer (seek = 19.)
(file descriptor in r0)
sys seek; offset; ptrname seek(fildes, offset, ptrname)
The file descriptor refers to a file open for reading or
writing. The read (resp. write) pointer for the file is set
as follows: if is 0, the pointer is set to if is 1, the
pointer is set to its current location plus if is 2, the
pointer is set to the size of the file plus if is 3, 4 or 5,
the meaning is as above for 0, 1 and 2 except that the
offset is multiplied by 512. If is 0 or 3, is unsigned,
otherwise it is signed. open (II), creat (II) The error bit
(c-bit) is set for an undefined file descriptor. From C, a 1
return indicates an error.
|
seek(2) |
|
