tailix
/
libkernaux
mirror of https://github.com/tailix/libkernaux.git
1
0
Fork 0
Code Releases Activity

Main: include/kernaux/memmap.h: Added func "KernAux_MemMap_finish"

This commit is contained in:
Alex Kotov 2022-06-15 12:16:29 +03:00
parent d030b9435e
commit 44b31501b7
Signed by: kotovalexarian
GPG Key ID: 553C0EBBEB5D5F08
3 changed files with 45 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
examples/memmap.c
View File

@ -18,5 +18,7 @@ int main()
assert(KernAux_MemMap_add_entry(memmap, false, "foo", SIZE_256MiB, SIZE_256MiB));
assert(KernAux_MemMap_add_entry(memmap, true, "bar", SIZE_512MiB, SIZE_512MiB));
assert(KernAux_MemMap_finish(memmap));
return 0;
}

2
include/kernaux/memmap.h
View File

@ -36,6 +36,8 @@ bool KernAux_MemMap_add_entry(
size_t size
);
bool KernAux_MemMap_finish(KernAux_MemMap memmap);
#ifdef __cplusplus
}
#endif

41
src/memmap.c
View File

@ -57,3 +57,44 @@ bool KernAux_MemMap_add_entry(
return true;
}
bool KernAux_MemMap_finish(KernAux_MemMap memmap)
{
if (MEMMAP.is_finished) {
KERNAUX_PANIC("memmap is finished");
return false;
}
if ((MEMMAP.entries_count == 0 && MEMMAP.memory_size != 0) ||
MEMMAP.entries_count > KERNAUX_MEMMAP_ENTRIES_MAX ||
MEMMAP.entries[0]->start != 0 ||
MEMMAP.entries[MEMMAP.entries_count - 1]->limit != MEMMAP.memory_size)
{
KERNAUX_PANIC("memmap is invalid");
return false;
}
for (size_t index = 0; index < MEMMAP.entries_count; ++index) {
if (SIZE_MAX - MEMMAP.entries[index]->start <
MEMMAP.entries[index]->size
||
MEMMAP.entries[index]->end !=
MEMMAP.entries[index]->start + MEMMAP.entries[index]->size - 1
||
MEMMAP.entries[index]->limit !=
MEMMAP.entries[index]->start + MEMMAP.entries[index]->size)
{
KERNAUX_PANIC("memmap is invalid");
return false;
}
}
for (size_t index = 1; index < MEMMAP.entries_count; ++index) {
if (MEMMAP.entries[index - 1]->limit != MEMMAP.entries[index]->start) {
KERNAUX_PANIC("memmap is invalid");
return false;
}
}
return MEMMAP.is_finished = true;
}