#include "procc/process.h"
#include "hal/cpu/paging.h"
#include "init/init.h"
#include "libk/executable/elf.h"
#include "libk/math.h"
#include "libk/serial.h"
#include "memory/kalloc.h"
#include "memory/memory_utils.h"
#include "memory/phys_base_allocator.h"
#include "memory/slab.h"
#include "memory/vm_manager.h"
#include "procc/scheduler.h"
#include "procc/thread.h"
#include "string.h"
#include "sys/fd.h"
#include "tty/tty.h"
#include "type.h"
#include "vfs/dentry.h"
#include "vfs/enum.h"
#include "vfs/vnode.h"
#include <str.h>
#include <sys/syscall.h>

Macros
#define	AT_NULL 0

#define	AT_IGNORE 1

#define	AT_EXECFD 2 /* File descriptor from program */

#define	AT_PHDR 3 /* Program Headers Address from main executable */

#define	AT_PHENT 4 /* program heder entry size */

#define	AT_PHNUM 5 /* Program Headers num*/

#define	AT_PAGESZ 6 /* page size (4096) */

#define	AT_BASE 7 /* Base address dari interpreter (ld.so) jika ada */

#define	AT_FLAGS 8 /* Flags */

#define	AT_ENTRY 9 /* Entry point dari executable utama */

#define	AT_NOTELF 10 /* Program not ELF */

#define	AT_UID 11 /* Real User ID */

#define	AT_EUID 12 /* Effective User ID */

#define	AT_GID 13 /* Real Group ID */

#define	AT_EGID 14 /* Effective Group ID */

#define	AT_PLATFORM 15 /* String CPU format (ex: "x86_64") */

#define	AT_HWCAP 16 /* Bitmask CPU capability */

#define	AT_CLKTCK 17 /* clock freq, for times() */

#define	AT_SECURE

#define	AT_RANDOM 25 /* Pointer into 16 byte random for stack canary/ASLR */

#define	AT_EXECFN 31 /* String path name executbale file */

#define	AT_SYSINFO_EHDR 33

#define	USER_STACK_PAGES 256

#define	USER_STACK_SIZE (USER_STACK_PAGES * 4096)

Functions
	__attribute__ ((unused))

	INIT (Process)

static uintptr_t	elf_prepare_stack (uintptr_t stack_top_kernel, uintptr_t stack_top_user, int argc, char const argv, char const envp, Elf64_Ehdr *ehdr, uintptr_t entry_addr, uintptr_t phdr_vaddr, uintptr_t interp_base_addr)

int	execve (const char path, char const argv, char const *envp)

pid_t	alloc_pid (void)

void	free_pid (pid_t pid)

process_t *	create_process (char name, thread_t main_thread)

Variables
static struct slab_cache *	process_cache = 0

static uint8_t *	pid_bitmap = 0

static dentry_ptr	process_dentry = 0

static process_t *	_process_list = 0

Macro Definition Documentation

◆ AT_BASE

#define AT_BASE 7 /* Base address dari interpreter (ld.so) jika ada */

Definition at line 45 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_CLKTCK

#define AT_CLKTCK 17 /* clock freq, for times() */

Definition at line 58 of file process.c.

◆ AT_EGID

#define AT_EGID 14 /* Effective Group ID */

Definition at line 53 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_ENTRY

#define AT_ENTRY 9 /* Entry point dari executable utama */

Definition at line 47 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_EUID

#define AT_EUID 12 /* Effective User ID */

Definition at line 51 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_EXECFD

#define AT_EXECFD 2 /* File descriptor from program */

Definition at line 40 of file process.c.

◆ AT_EXECFN

#define AT_EXECFN 31 /* String path name executbale file */

Definition at line 63 of file process.c.

◆ AT_FLAGS

#define AT_FLAGS 8 /* Flags */

Definition at line 46 of file process.c.

◆ AT_GID

#define AT_GID 13 /* Real Group ID */

Definition at line 52 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_HWCAP

#define AT_HWCAP 16 /* Bitmask CPU capability */

Definition at line 57 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_IGNORE

#define AT_IGNORE 1

Definition at line 39 of file process.c.

◆ AT_NOTELF

#define AT_NOTELF 10 /* Program not ELF */

Definition at line 48 of file process.c.

◆ AT_NULL

#define AT_NULL 0

Definition at line 38 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_PAGESZ

#define AT_PAGESZ 6 /* page size (4096) */

Definition at line 44 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_PHDR

#define AT_PHDR 3 /* Program Headers Address from main executable */

Definition at line 41 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_PHENT

#define AT_PHENT 4 /* program heder entry size */

Definition at line 42 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_PHNUM

#define AT_PHNUM 5 /* Program Headers num*/

Definition at line 43 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_PLATFORM

#define AT_PLATFORM 15 /* String CPU format (ex: "x86_64") */

Definition at line 56 of file process.c.

◆ AT_RANDOM

#define AT_RANDOM 25 /* Pointer into 16 byte random for stack canary/ASLR */

Definition at line 62 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_SECURE

#define AT_SECURE

Value:

23 /* secure mode (boolean 1/0), used for setuid/setgid \

*/

Definition at line 60 of file process.c.

Referenced by elf_prepare_stack().

◆ AT_SYSINFO_EHDR

#define AT_SYSINFO_EHDR 33

Definition at line 64 of file process.c.

◆ AT_UID

#define AT_UID 11 /* Real User ID */

Definition at line 50 of file process.c.

Referenced by elf_prepare_stack().

◆ USER_STACK_PAGES

#define USER_STACK_PAGES 256

Definition at line 66 of file process.c.

Referenced by execve().

◆ USER_STACK_SIZE

#define USER_STACK_SIZE (USER_STACK_PAGES * 4096)

Definition at line 67 of file process.c.

Referenced by execve().

Function Documentation

◆ attribute()

__attribute__ ( (unused) )

Definition at line 27 of file process.c.

◆ alloc_pid()

pid_t alloc_pid ( void )

Definition at line 529 of file process.c.

References INVALID_PID, MAX_PID_ALLOWED, and pid_bitmap.

Referenced by create_process().

◆ create_process()

process_t * create_process	(	char *	name,
		thread_t *	main_thread )

Definition at line 552 of file process.c.

References _process_list, alloc_fd(), alloc_fdtable(), alloc_pid(), CREATE_MISSING_ENTRY, process_head::first, get_tty_dentry(), h, itoa(), main_thread, name, name_len, process_node::next, NULL, process_node::prev, process_cache, process_dentry, resolve_dentry(), strlen(), strncpy(), tail, dentry::vnode, and vxSlabAlloc().

Referenced by execve().

◆ elf_prepare_stack()

static uintptr_t elf_prepare_stack	(	uintptr_t	stack_top_kernel,
		uintptr_t	stack_top_user,
		int	argc,
		char const	argv,
		char const	envp,
		Elf64_Ehdr *	ehdr,
		uintptr_t	entry_addr,
		uintptr_t	phdr_vaddr,
		uintptr_t	interp_base_addr )

static

Definition at line 69 of file process.c.

References AT_BASE, AT_EGID, AT_ENTRY, AT_EUID, AT_GID, AT_HWCAP, AT_NULL, AT_PAGESZ, AT_PHDR, AT_PHENT, AT_PHNUM, AT_RANDOM, AT_SECURE, AT_UID, Elf64_Ehdr::e_phentsize, Elf64_Ehdr::e_phnum, entry_addr, kalloc(), kfree2(), len, memcopy(), serial2_printf(), and strlen().

Referenced by execve().

◆ execve()

int execve	(	const char *	path,
		char const	argv,
		char const	envp )

Definition at line 173 of file process.c.

References ALIGN_UP, attach_to_scheduler(), base_addr, BLOCK_SIZE, kstring::c_str, create_process(), create_thread(), create_vmm_page(), dentry_put(), Elf64_Ehdr::e_entry, Elf64_Ehdr::e_ident, Elf64_Ehdr::e_phentsize, Elf64_Ehdr::e_phnum, Elf64_Ehdr::e_phoff, Elf64_Ehdr::e_type, Elf64_Ehdr::e_version, elf_count_load_size(), elf_dyn_map_all(), elf_get_phdr_dynamic(), elf_gnu_hash_parse(), elf_load(), elf_prepare_stack(), ELF_PTR, elf_relocate_dyn(), elf_section_map_all(), ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3, entry_addr, ET_DYN, ET_EXEC, get_kernel_vmm_page(), get_root_dentry(), elf_section_map::gnuhash, heap_start, kalloc(), kfree2(), LOG2_ERROR, LOG2_INFO, LOG_ERROR, LOG_INFO, elf_load_mmap_table::mapped, memcopy(), min(), dentry::name, elf_dynamic_map::needed, NULL, ops, vnode::ops, Elf64_Phdr::p_memsz, Elf64_Phdr::p_offset, Elf64_Phdr::p_type, Elf64_Phdr::p_vaddr, page, paging_create_page_directory(), paging_get_highest_page_map(), paging_setup(), paging_unmap_page(), dentry::parent, path, phys_base_alloc(), print_dentry_tree(), PT_INTERP, PT_LOAD, resolve_dentry(), serial2_printf(), serial_printf(), serial_trace, size, vector_uint64_t::size, vnode::size, str(), str_release(), elf_dynamic_map::strtab, THREAD_USER, vnode::type, USER_STACK_PAGES, USER_STACK_SIZE, USER_STACK_VADDR, elf_load_mmap_table::vaddr, VFS_OK, vma_lookup_free_vaddr(), VMA_REGION_A, VMA_REGION_PROCESS, vma_register(), vma_unregister(), dentry::vnode, VNODE_TYPE_FILE, VNODE_TYPE_LNK, and vxMultipleMmap().

Referenced by __attribute__(), and execve().

◆ free_pid()

void free_pid ( pid_t pid )

Definition at line 546 of file process.c.

References pid, and pid_bitmap.

◆ INIT()

INIT ( Process )

Definition at line 30 of file process.c.

References kalloc(), MAX_PID_ALLOWED, memset(), pid_bitmap, process_cache, process_dentry, vxCreateSlabCache(), and vxnamei().

Variable Documentation

◆ _process_list

process_t* _process_list = 0

static

Definition at line 28 of file process.c.

Referenced by create_process().

◆ pid_bitmap

uint8_t* pid_bitmap = 0

static

Definition at line 25 of file process.c.

Referenced by alloc_pid(), free_pid(), and INIT().

◆ process_cache

struct slab_cache* process_cache = 0

static

Definition at line 24 of file process.c.

Referenced by create_process(), and INIT().

◆ process_dentry

dentry_ptr process_dentry = 0

static

Definition at line 26 of file process.c.

Referenced by create_process(), and INIT().

Macros

Functions

Variables

Macro Definition Documentation

◆ AT_BASE

◆ AT_CLKTCK

◆ AT_EGID

◆ AT_ENTRY

◆ AT_EUID

◆ AT_EXECFD

◆ AT_EXECFN

◆ AT_FLAGS

◆ AT_GID

◆ AT_HWCAP

◆ AT_IGNORE

◆ AT_NOTELF

◆ AT_NULL

◆ AT_PAGESZ

◆ AT_PHDR

◆ AT_PHENT

◆ AT_PHNUM

◆ AT_PLATFORM

◆ AT_RANDOM

◆ AT_SECURE

◆ AT_SYSINFO_EHDR

◆ AT_UID

◆ USER_STACK_PAGES

◆ USER_STACK_SIZE

Function Documentation

◆ __attribute__()

◆ alloc_pid()

◆ create_process()

◆ elf_prepare_stack()

◆ execve()

◆ free_pid()

◆ INIT()

Variable Documentation

◆ _process_list

◆ pid_bitmap

◆ process_cache

◆ process_dentry

◆ attribute()