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[os2/process]: Allow for partial success scenarios

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This commit is contained in:
flysand7
2024-08-25 13:21:02 +11:00
parent 0d7e6430eb
commit fa84e86766
1 changed files with 47 additions and 51 deletions
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core/os/os2/process_windows.odin
+47 -51
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@@ -94,7 +94,7 @@ read_memory_as_slice :: proc(h: win32.HANDLE, addr: rawptr, dest: []$T) -> (byte
_process_info_by_pid :: proc(pid: int, selection: Process_Info_Fields, allocator: runtime.Allocator) -> (info: Process_Info, err: Error) {
info.pid = pid
// Data obtained from process snapshots
if selection >= {.PPid, .Priority} {
snapshot_process: if selection >= {.PPid, .Priority} {
entry, entry_err := _process_entry_by_pid(info.pid)
if entry_err != nil {
err = General_Error.Not_Exist
@@ -109,13 +109,12 @@ _process_info_by_pid :: proc(pid: int, selection: Process_Info_Fields, allocator
info.priority = int(entry.pcPriClassBase)
}
}
if .Executable_Path in selection { // snap module
info.executable_path = _process_exe_by_pid(pid, allocator) or_return
snapshot_modules: if .Executable_Path in selection {
info.executable_path = _process_exe_by_pid(pid, allocator) or_break snapshot_modules
info.fields += {.Executable_Path}
}
ph := win32.INVALID_HANDLE_VALUE
if selection >= {.Command_Line, .Environment, .Working_Dir, .Username} { // need process handle
if selection >= {.Command_Line, .Environment, .Working_Dir, .Username} {
ph = win32.OpenProcess(
win32.PROCESS_QUERY_LIMITED_INFORMATION | win32.PROCESS_VM_READ,
false,
@@ -129,7 +128,7 @@ _process_info_by_pid :: proc(pid: int, selection: Process_Info_Fields, allocator
defer if ph != win32.INVALID_HANDLE_VALUE {
win32.CloseHandle(ph)
}
if selection >= {.Command_Line, .Environment, .Working_Dir} { // need peb
read_peb: if selection >= {.Command_Line, .Environment, .Working_Dir} {
process_info_size: u32
process_info: win32.PROCESS_BASIC_INFORMATION
status := win32.NtQueryInformationProcess(ph, .ProcessBasicInformation, &process_info, size_of(process_info), &process_info_size)
@@ -141,41 +140,40 @@ _process_info_by_pid :: proc(pid: int, selection: Process_Info_Fields, allocator
}
assert(process_info.PebBaseAddress != nil)
process_peb: win32.PEB
_ = read_memory_as_struct(ph, process_info.PebBaseAddress, &process_peb) or_return
_ = read_memory_as_struct(ph, process_info.PebBaseAddress, &process_peb) or_break read_peb
process_params: win32.RTL_USER_PROCESS_PARAMETERS
_ = read_memory_as_struct(ph, process_peb.ProcessParameters, &process_params) or_return
_ = read_memory_as_struct(ph, process_peb.ProcessParameters, &process_params) or_break read_peb
if selection >= {.Command_Line, .Command_Args} {
TEMP_ALLOCATOR_GUARD()
cmdline_w := make([]u16, process_params.CommandLine.Length, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.CommandLine.Buffer, cmdline_w) or_return
cmdline_w := make([]u16, process_params.CommandLine.Length, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.CommandLine.Buffer, cmdline_w) or_break read_peb
if .Command_Line in selection {
info.command_line = win32_utf16_to_utf8(cmdline_w, allocator) or_return
info.command_line = win32_utf16_to_utf8(cmdline_w, allocator) or_break read_peb
info.fields += {.Command_Line}
}
if .Command_Args in selection {
info.command_args = _parse_command_line(raw_data(cmdline_w), allocator) or_return
info.command_args = _parse_command_line(raw_data(cmdline_w), allocator) or_break read_peb
info.fields += {.Command_Args}
}
}
if .Environment in selection {
TEMP_ALLOCATOR_GUARD()
env_len := process_params.EnvironmentSize / 2
envs_w := make([]u16, env_len, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.Environment, envs_w) or_return
info.environment = _parse_environment_block(raw_data(envs_w), allocator) or_return
envs_w := make([]u16, env_len, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.Environment, envs_w) or_break read_peb
info.environment = _parse_environment_block(raw_data(envs_w), allocator) or_break read_peb
info.fields += {.Environment}
}
if .Working_Dir in selection {
TEMP_ALLOCATOR_GUARD()
cwd_w := make([]u16, process_params.CurrentDirectoryPath.Length, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.CurrentDirectoryPath.Buffer, cwd_w) or_return
info.working_dir = win32_utf16_to_utf8(cwd_w, allocator) or_return
cwd_w := make([]u16, process_params.CurrentDirectoryPath.Length, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.CurrentDirectoryPath.Buffer, cwd_w) or_break read_peb
info.working_dir = win32_utf16_to_utf8(cwd_w, allocator) or_break read_peb
info.fields += {.Working_Dir}
}
}
if .Username in selection {
info.username = _get_process_user(ph, allocator) or_return
read_username: if .Username in selection {
info.username = _get_process_user(ph, allocator) or_break read_username
info.fields += {.Username}
}
err = nil
@@ -187,7 +185,7 @@ _process_info_by_handle :: proc(process: Process, selection: Process_Info_Fields
pid := process.pid
info.pid = pid
// Data obtained from process snapshots
if selection >= {.PPid, .Priority} { // snap process
snapshot_process: if selection >= {.PPid, .Priority} {
entry, entry_err := _process_entry_by_pid(info.pid)
if entry_err != nil {
err = General_Error.Not_Exist
@@ -202,12 +200,12 @@ _process_info_by_handle :: proc(process: Process, selection: Process_Info_Fields
info.priority = int(entry.pcPriClassBase)
}
}
if .Executable_Path in selection { // snap module
info.executable_path = _process_exe_by_pid(pid, allocator) or_return
snapshot_module: if .Executable_Path in selection {
info.executable_path = _process_exe_by_pid(pid, allocator) or_break snapshot_module
info.fields += {.Executable_Path}
}
ph := win32.HANDLE(process.handle)
if selection >= {.Command_Line, .Environment, .Working_Dir} { // need peb
read_peb: if selection >= {.Command_Line, .Environment, .Working_Dir} {
process_info_size: u32
process_info: win32.PROCESS_BASIC_INFORMATION
status := win32.NtQueryInformationProcess(ph, .ProcessBasicInformation, &process_info, size_of(process_info), &process_info_size)
@@ -219,42 +217,40 @@ _process_info_by_handle :: proc(process: Process, selection: Process_Info_Fields
}
assert(process_info.PebBaseAddress != nil)
process_peb: win32.PEB
_ = read_memory_as_struct(ph, process_info.PebBaseAddress, &process_peb) or_return
_ = read_memory_as_struct(ph, process_info.PebBaseAddress, &process_peb) or_break read_peb
process_params: win32.RTL_USER_PROCESS_PARAMETERS
_ = read_memory_as_struct(ph, process_peb.ProcessParameters, &process_params) or_return
_ = read_memory_as_struct(ph, process_peb.ProcessParameters, &process_params) or_break read_peb
if selection >= {.Command_Line, .Command_Args} {
TEMP_ALLOCATOR_GUARD()
cmdline_w := make([]u16, process_params.CommandLine.Length, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.CommandLine.Buffer, cmdline_w) or_return
cmdline_w := make([]u16, process_params.CommandLine.Length, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.CommandLine.Buffer, cmdline_w) or_break read_peb
if .Command_Line in selection {
info.command_line = win32_utf16_to_utf8(cmdline_w, allocator) or_return
info.command_line = win32_utf16_to_utf8(cmdline_w, allocator) or_break read_peb
info.fields += {.Command_Line}
}
if .Command_Args in selection {
info.command_args = _parse_command_line(raw_data(cmdline_w), allocator) or_return
info.command_args = _parse_command_line(raw_data(cmdline_w), allocator) or_break read_peb
info.fields += {.Command_Args}
}
}
if .Environment in selection {
TEMP_ALLOCATOR_GUARD()
env_len := process_params.EnvironmentSize / 2
envs_w := make([]u16, env_len, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.Environment, envs_w) or_return
info.environment = _parse_environment_block(raw_data(envs_w), allocator) or_return
envs_w := make([]u16, env_len, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.Environment, envs_w) or_break read_peb
info.environment = _parse_environment_block(raw_data(envs_w), allocator) or_break read_peb
info.fields += {.Environment}
}
if .Working_Dir in selection {
TEMP_ALLOCATOR_GUARD()
cwd_w := make([]u16, process_params.CurrentDirectoryPath.Length, temp_allocator()) or_return
_ = read_memory_as_slice(ph, process_params.CurrentDirectoryPath.Buffer, cwd_w) or_return
info.working_dir = win32_utf16_to_utf8(cwd_w, allocator) or_return
cwd_w := make([]u16, process_params.CurrentDirectoryPath.Length, temp_allocator()) or_break read_peb
_ = read_memory_as_slice(ph, process_params.CurrentDirectoryPath.Buffer, cwd_w) or_break read_peb
info.working_dir = win32_utf16_to_utf8(cwd_w, allocator) or_break read_peb
info.fields += {.Working_Dir}
}
}
if .Username in selection {
info.username = _get_process_user(ph, allocator) or_return
read_username: if .Username in selection {
info.username = _get_process_user(ph, allocator) or_break read_username
info.fields += {.Username}
}
err = nil
@@ -264,7 +260,7 @@ _process_info_by_handle :: proc(process: Process, selection: Process_Info_Fields
@(private="package")
_current_process_info :: proc(selection: Process_Info_Fields, allocator: runtime.Allocator) -> (info: Process_Info, err: Error) {
info.pid = get_pid()
if selection >= {.PPid, .Priority} { // snap process
snapshot_process: if selection >= {.PPid, .Priority} {
entry, entry_err := _process_entry_by_pid(info.pid)
if entry_err != nil {
err = General_Error.Not_Exist
@@ -279,31 +275,31 @@ _current_process_info :: proc(selection: Process_Info_Fields, allocator: runtime
info.priority = int(entry.pcPriClassBase)
}
}
if .Executable_Path in selection {
module_filename: if .Executable_Path in selection {
exe_filename_w: [256]u16
path_len := win32.GetModuleFileNameW(nil, raw_data(exe_filename_w[:]), len(exe_filename_w))
info.executable_path = win32_utf16_to_utf8(exe_filename_w[:path_len], allocator) or_return
info.executable_path = win32_utf16_to_utf8(exe_filename_w[:path_len], allocator) or_break module_filename
info.fields += {.Executable_Path}
}
if selection >= {.Command_Line, .Command_Args} {
command_line: if selection >= {.Command_Line, .Command_Args} {
command_line_w := win32.GetCommandLineW()
if .Command_Line in selection {
info.command_line = win32_wstring_to_utf8(command_line_w, allocator) or_return
info.command_line = win32_wstring_to_utf8(command_line_w, allocator) or_break command_line
info.fields += {.Command_Line}
}
if .Command_Args in selection {
info.command_args = _parse_command_line(command_line_w, allocator) or_return
info.command_args = _parse_command_line(command_line_w, allocator) or_break command_line
info.fields += {.Command_Args}
}
}
if .Environment in selection {
environment: if .Environment in selection {
env_block := win32.GetEnvironmentStringsW()
info.environment = _parse_environment_block(env_block, allocator) or_return
info.environment = _parse_environment_block(env_block, allocator) or_break environment
info.fields += {.Environment}
}
if .Username in selection {
username: if .Username in selection {
process_handle := win32.GetCurrentProcess()
info.username = _get_process_user(process_handle, allocator) or_return
info.username = _get_process_user(process_handle, allocator) or_break username
info.fields += {.Username}
}
if .Working_Dir in selection {