1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <syserr.h>
include "iki.h"
# IKI_RENAME -- Rename an entire image or group of images.
procedure iki_rename (old, new)
char old[ARB] #I old name of image
char new[ARB] #I new name of image
int k, n, status
pointer new_root, new_extn
pointer sp, old_root, old_extn
bool streq()
int iki_access()
errchk syserrs
include "iki.com"
begin
call smark (sp)
call salloc (old_root, SZ_PATHNAME, TY_CHAR)
call salloc (old_extn, MAX_LENEXTN, TY_CHAR)
call salloc (new_root, SZ_PATHNAME, TY_CHAR)
call salloc (new_extn, MAX_LENEXTN, TY_CHAR)
# Verify that the old image exists and determine its type.
k = iki_access (old, Memc[old_root], Memc[old_extn], 0)
if (k < 0)
call syserrs (SYS_IKIAMBIG, old)
else if (k == 0)
call syserrs (SYS_IKIIMNF, old)
# Determine if the old image exists. New name is new root plus
# legal extn for old image.
n = iki_access (new, Memc[new_root], Memc[new_extn], 0)
if (n <= 0)
call iki_parse (new, Memc[new_root], Memc[new_extn])
# If an extension was given for the new image, verify that it is a
# valid extension for an image of the same type as the old image.
# We cannot change the image type in a rename operation.
if (Memc[new_extn] != EOS) {
call zcall5 (IKI_ACCESS(k), k, Memc[new_root], Memc[new_extn],
NEW_FILE, status)
if (status == NO)
call strcpy (Memc[old_extn], Memc[new_extn], MAX_LENEXTN)
} else
call strcpy (Memc[old_extn], Memc[new_extn], MAX_LENEXTN)
# Make sure we will not be clobbering an existing image. Renaming
# an image onto itself is ok; what it means to do this is up to
# the specific image kernel.
if (n > 0) {
if (streq (Memc[old_root], Memc[new_root]) &&
streq (Memc[old_extn], Memc[new_extn]))
; # rename x -> x; let kernel decide what to do
else
call syserrs (SYS_IKICLOB, new)
}
# Rename the image.
call zcall6 (IKI_RENAME(k), k, Memc[old_root], Memc[old_extn],
Memc[new_root], Memc[new_extn], status)
if (status == ERR)
call syserrs (SYS_IKIRENAME, old)
call sfree (sp)
end
|
