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Enough compatibility work to make figlet build and run!

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I ran out of steam writing library routines and imported two
BSD-licensed libc routines: sscanf() and getopt().

I will most likely rewrite them sooner or later. For now
I just wanted to see figlet running.
This commit is contained in:
Andreas Kling 2018-10-31 17:50:43 +01:00
parent 69c7a59e6f
commit 819ce91395
22 changed files with 714 additions and 36 deletions
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41
Kernel/Task.cpp
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@ -182,6 +182,7 @@ int Task::sys$set_mmap_name(void* addr, size_t size, const char* name)
void* Task::sys$mmap(void* addr, size_t size)
{
InterruptDisabler disabler;
// FIXME: Implement mapping at a client-preferred address.
ASSERT(addr == nullptr);
auto* region = allocateRegion(size, "mmap");
@ -193,6 +194,7 @@ void* Task::sys$mmap(void* addr, size_t size)
int Task::sys$munmap(void* addr, size_t size)
{
InterruptDisabler disabler;
auto* region = regionFromRange(LinearAddress((dword)addr), size);
if (!region)
return -1;
@ -213,6 +215,12 @@ int Task::sys$gethostname(char* buffer, size_t size)
int Task::sys$spawn(const char* path, const char** args)
{
if (args) {
for (size_t i = 0; args[i]; ++i) {
VALIDATE_USER_BUFFER(args[i], strlen(args[i]));
}
}
int error = 0;
auto* child = Task::createUserTask(path, m_uid, m_gid, m_pid, error, args, m_tty);
if (child)
@ -261,10 +269,17 @@ Task* Task::createUserTask(const String& path, uid_t uid, gid_t gid, pid_t paren
taskArguments.append(parts.last());
}
Vector<String> taskEnvironment;
taskEnvironment.append("PATH=/bin");
taskEnvironment.append("SHELL=/bin/sh");
taskEnvironment.append("TERM=console");
taskEnvironment.append("HOME=/");
InterruptDisabler disabler; // FIXME: Get rid of this, jesus christ. This "critical" section is HUGE.
Task* t = new Task(parts.takeLast(), uid, gid, parentPID, Ring3, move(cwd), handle->vnode(), tty);
t->m_arguments = move(taskArguments);
t->m_initialEnvironment = move(taskEnvironment);
ExecSpace space;
Region* region = nullptr;
@ -322,11 +337,29 @@ Task* Task::createUserTask(const String& path, uid_t uid, gid_t gid, pid_t paren
#ifdef TASK_DEBUG
kprintf("Task %u (%s) spawned @ %p\n", t->pid(), t->name().characters(), t->m_tss.eip);
#endif
error = 0;
return t;
}
int Task::sys$get_environment(char*** environ)
{
auto* region = allocateRegion(4096, "environ");
if (!region)
return -ENOMEM;
MM.mapRegion(*this, *region);
char* envpage = (char*)region->linearAddress.get();
*environ = (char**)envpage;
char* bufptr = envpage + (sizeof(char*) * (m_initialEnvironment.size() + 1));
for (size_t i = 0; i < m_initialEnvironment.size(); ++i) {
(*environ)[i] = bufptr;
memcpy(bufptr, m_initialEnvironment[i].characters(), m_initialEnvironment[i].length());
bufptr += m_initialEnvironment[i].length();
*(bufptr++) = '\0';
}
(*environ)[m_initialEnvironment.size()] = nullptr;
return 0;
}
int Task::sys$get_arguments(int* argc, char*** argv)
{
auto* region = allocateRegion(4096, "argv");
@ -763,12 +796,12 @@ ssize_t Task::sys$get_dir_entries(int fd, void* buffer, size_t size)
return handle->get_dir_entries((byte*)buffer, size);
}
int Task::sys$seek(int fd, int offset)
int Task::sys$lseek(int fd, off_t offset, int whence)
{
auto* handle = fileHandleIfExists(fd);
if (!handle)
return -1;
return handle->seek(offset, SEEK_SET);
return -EBADF;
return handle->seek(offset, whence);
}
int Task::sys$ttyname_r(int fd, char* buffer, size_t size)