From 8a9208612eec8ddae4c418485d848ecfa0613699 Mon Sep 17 00:00:00 2001 From: Anton Kling Date: Mon, 30 Oct 2023 22:12:14 +0100 Subject: Meta: Move kernel and userland to their own folders. This is to allow both the kernel and the userland to share certain header files and to make the folder structure a bit more clear. --- kernel/libc/string/copy.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 kernel/libc/string/copy.c (limited to 'kernel/libc/string/copy.c') diff --git a/kernel/libc/string/copy.c b/kernel/libc/string/copy.c new file mode 100644 index 0000000..277c808 --- /dev/null +++ b/kernel/libc/string/copy.c @@ -0,0 +1,26 @@ +#include +#include +#include +#include + +char *copy_and_allocate_string(const char *s) { + size_t l = strlen(s); + char *r = kmalloc(l + 1); + if (!r) + return NULL; + return strncpy(r, s, l); +} + +char *copy_and_allocate_user_string(const char *s) { + size_t len; + if (!is_valid_user_c_string(s, &len)) + return NULL; + size_t real_len = strlen(s); + assert(real_len == len); + len = real_len; + char *r = kmalloc(len + 1); + if (!r) + return NULL; + strlcpy(r, s, len); + return r; +} -- cgit v1.2.3