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Added missing putenv() implementation. Chosed to limit env names to an arbitrary length of 64 bytes.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9768 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-11-03 15:00:08 +00:00
parent c1a8ebfa2d
commit 8c390406d7
1 changed files with 42 additions and 3 deletions
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45
src/kernel/libroot/posix/stdlib/env.c
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@ -1,21 +1,41 @@
/*
** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the Haiku License.
**
** Copyright 2001, Travis Geiselbrecht. All rights reserved.
** Distributed under the terms of the NewOS License.
*/
#include <syscalls.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#define RETURN_AND_SET_ERRNO(err) \
if (err < 0) { \
errno = err; \
return -1; \
} \
return err;
char **environ = NULL;
int setenv(const char *name, const char *value, int overwrite)
int
setenv(const char *name, const char *value, int overwrite)
{
return sys_setenv(name, value, overwrite);
status_t status = sys_setenv(name, value, overwrite);
RETURN_AND_SET_ERRNO(status);
}
char *getenv(const char *name)
char *
getenv(const char *name)
{
char *value;
int rc;
@ -25,3 +45,22 @@ char *getenv(const char *name)
return NULL;
return value;
}
int
putenv(const char *string)
{
char name[64];
char *value = strchr(string, '=');
if (value == NULL || value - string >= (int)sizeof(name)) {
errno = EINVAL;
return -1;
}
strlcpy(name, string, value - string);
value++;
return setenv(name, value, true);
}