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fix buffer overrun and uninitialized variable

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IoIxD 2026-01-19 22:06:57 -07:00
commit efeeb73ef5
3 changed files with 11 additions and 8 deletions
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3
src/system/linux/alloc.c
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@ -107,6 +107,9 @@ void *msh_allocate(SIZE_TYPE size) {
}; };
void msh_deallocate(void *ptr) { void msh_deallocate(void *ptr) {
if (ptr == 0) {
return;
}
msh_linux_block *block = get_metadata_block(ptr); msh_linux_block *block = get_metadata_block(ptr);
block->free = 1; block->free = 1;
if (block->prev && block->prev->free) { if (block->prev && block->prev->free) {

6
src/system/linux/env.c
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@ -5,9 +5,9 @@ msh_linux_env_item *env_items = 0;
msh_linux_env_item *env_item_tail = 0; msh_linux_env_item *env_item_tail = 0;
void msh_linux_env_map_init() { void msh_linux_env_map_init() {
msh_file *env_file; msh_file *env_file = 0;
SIZE_TYPE cur; SIZE_TYPE cur = 0;
char *file_buf; char *file_buf = 0;
char ch = 1; char ch = 1;
int counter = 0, i = 0; int counter = 0, i = 0;

4
src/system/linux/linux.c
View file

@ -33,7 +33,6 @@ int msh_execute(char *cmd, char **args) {
return 0; return 0;
} }
SIZE_TYPE fork = (SIZE_TYPE)SYSCALL(fork, 0); SIZE_TYPE fork = (SIZE_TYPE)SYSCALL(fork, 0);
// int fork = 0;
if (fork == 0) { if (fork == 0) {
char **env_translated = 0; char **env_translated = 0;
@ -52,7 +51,8 @@ int msh_execute(char *cmd, char **args) {
int n = 0; int n = 0;
char *entry = char *entry =
msh_allocate(item_list->key_len + item_list->value_len + 2); msh_allocate(item_list->key_len + item_list->value_len + 2);
msh_str_copy_strs(entry, item_list->key, "=", item_list->value, "\0"); msh_str_copy_strs(entry, item_list->key, "=", item_list->value, "\0",
0);
env_translated[i++] = entry; env_translated[i++] = entry;
} }
item_list = item_list->next; item_list = item_list->next;