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
|
Rev | Line | |
---|
[444] | 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.