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Fix sethostname(2) nul termination.

This commit is contained in:
Jonas 'Sortie' Termansen 2022-10-23 14:36:50 +02:00
parent b1b9fdc2d8
commit 0f348c192b
1 changed files with 2 additions and 2 deletions
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4
kernel/hostname.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2014 Jonas 'Sortie' Termansen.
* Copyright (c) 2014, 2022 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -60,7 +60,7 @@ int sys_sethostname(const char* src_name, size_t src_name_size)
return errno = EINVAL, -1;
if ( !CopyFromUser(new_hostname, src_name, src_name_size) )
return -1;
size_t new_hostname_length = strnlen(new_hostname, sizeof(new_hostname));
size_t new_hostname_length = strnlen(new_hostname, src_name_size);
if ( HOST_NAME_MAX < new_hostname_length )
return errno = EINVAL, -1;
new_hostname[new_hostname_length] = '\0';