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LibC: Add mmap_with_name() that names the allocation immediately.

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This allows us to skip the separate call to set_mmap_name() in code that
we control, e.g malloc() and GraphicsBitmap.
This commit is contained in:
Andreas Kling 2019-05-19 15:54:56 +02:00
parent 5f26f83451
commit 189b342e6f
8 changed files with 28 additions and 13 deletions
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7
Kernel/Process.cpp
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@ -151,12 +151,15 @@ void* Process::sys$mmap(const Syscall::SC_mmap_params* params)
{
if (!validate_read(params, sizeof(Syscall::SC_mmap_params)))
return (void*)-EFAULT;
if (params->name && !validate_read_str(params->name))
return (void*)-EFAULT;
void* addr = (void*)params->addr;
size_t size = params->size;
int prot = params->prot;
int flags = params->flags;
int fd = params->fd;
off_t offset = params->offset;
const char* name = params->name;
if (size == 0)
return (void*)-EINVAL;
if ((dword)addr & ~PAGE_MASK)
@ -167,6 +170,8 @@ void* Process::sys$mmap(const Syscall::SC_mmap_params* params)
return (void*)-ENOMEM;
if (flags & MAP_SHARED)
region->set_shared(true);
if (name)
region->set_name(name);
return region->laddr().as_ptr();
}
if (offset & ~PAGE_MASK)
@ -180,6 +185,8 @@ void* Process::sys$mmap(const Syscall::SC_mmap_params* params)
auto region = region_or_error.value();
if (flags & MAP_SHARED)
region->set_shared(true);
if (name)
region->set_name(name);
return region->laddr().as_ptr();
}