Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
|
add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
1.0 KB
|
Line | |
---|
1 | /* Copyright (C) 2002, 2005 by Red Hat, Incorporated. All rights reserved. |
---|
2 | * |
---|
3 | * Permission to use, copy, modify, and distribute this software |
---|
4 | * is freely granted, provided that this notice is preserved. |
---|
5 | */ |
---|
6 | |
---|
7 | #include <errno.h> |
---|
8 | #include <sys/types.h> |
---|
9 | #include <string.h> |
---|
10 | #include <stdlib.h> |
---|
11 | #include <argz.h> |
---|
12 | #define __need_ptrdiff_t |
---|
13 | #include <stddef.h> |
---|
14 | |
---|
15 | error_t |
---|
16 | argz_insert (char **argz, |
---|
17 | size_t *argz_len, |
---|
18 | char *before, |
---|
19 | const char *entry) |
---|
20 | { |
---|
21 | int len = 0; |
---|
22 | ptrdiff_t delta; |
---|
23 | |
---|
24 | if (before == NULL) |
---|
25 | return argz_add(argz, argz_len, entry); |
---|
26 | |
---|
27 | if (before < *argz || before >= *argz + *argz_len) |
---|
28 | return EINVAL; |
---|
29 | |
---|
30 | while (before != *argz && before[-1]) |
---|
31 | before--; |
---|
32 | |
---|
33 | /* delta will always be non-negative, and < *argz_len */ |
---|
34 | delta = before - *argz; |
---|
35 | |
---|
36 | len = strlen(entry) + 1; |
---|
37 | |
---|
38 | if(!(*argz = (char *)realloc(*argz, *argz_len + len))) |
---|
39 | return ENOMEM; |
---|
40 | |
---|
41 | memmove(*argz + delta + len, *argz + delta, *argz_len - delta); |
---|
42 | memcpy(*argz + delta, entry, len); |
---|
43 | |
---|
44 | *argz_len += len; |
---|
45 | |
---|
46 | return 0; |
---|
47 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.