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demon/linux: kill, detach, process iteration

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This commit is contained in:
Ryan Fleury
2025-07-17 14:45:08 -07:00
parent 2db6b826a1
commit 3466779d41
1 changed files with 74 additions and 4 deletions
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src/demon/linux/demon_core_linux.c
+74 -4
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@@ -726,13 +726,27 @@ dmn_ctrl_attach(DMN_CtrlCtx *ctx, U32 pid)
internal B32
dmn_ctrl_kill(DMN_CtrlCtx *ctx, DMN_Handle process, U32 exit_code)
{
return 0;
B32 result = 0;
DMN_LNX_Entity *process_entity = dmn_lnx_entity_from_handle(process);
if(process_entity != &dmn_lnx_nil_entity &&
kill(process_entity->id, SIGKILL) != -1)
{
result = 1;
}
return result;
}
internal B32
dmn_ctrl_detach(DMN_CtrlCtx *ctx, DMN_Handle process)
{
return 0;
B32 result = 0;
DMN_LNX_Entity *process_entity = dmn_lnx_entity_from_handle(process);
if(process_entity != &dmn_lnx_nil_entity &&
ptrace(PTRACE_DETACH, process_entity->id, 0, 0) != -1)
{
result = 1;
}
return result;
}
internal DMN_EventList
@@ -825,7 +839,8 @@ dmn_process_write(DMN_Handle process, Rng1U64 range, void *src)
internal Arch
dmn_arch_from_thread(DMN_Handle handle)
{
return Arch_Null;
DMN_LNX_Entity *thread = dmn_lnx_entity_from_handle(handle);
return thread->arch;
}
internal U64
@@ -857,15 +872,70 @@ dmn_thread_write_reg_block(DMN_Handle handle, void *reg_block)
internal void
dmn_process_iter_begin(DMN_ProcessIter *iter)
{
DIR *dir = opendir("/proc");
MemoryZeroStruct(iter);
iter->v[0] = IntFromPtr(dir);
}
internal B32
dmn_process_iter_next(Arena *arena, DMN_ProcessIter *iter, DMN_ProcessInfo *info_out)
{
return 0;
// rjf: scan for the next process ID in the directory
B32 got_pid = 0;
String8 pid_string = {0};
{
DIR *dir = (DIR*)PtrFromInt(iter->v[0]);
if(dir != 0 && iter->v[1] == 0)
{
for(;;)
{
// rjf: get next entry
struct dirent *d = readdir(dir);
if(d == 0)
{
break;
}
// rjf: check file name is integer
String8 file_name = str8_cstring((char*)d->d_name);
B32 is_integer = str8_is_integer(file_name, 10);
// rjf: break on integers (which represent processes)
if(is_integer)
{
got_pid = 1;
pid_string = file_name;
break;
}
}
}
}
// rjf: if we found a process id, map id => info
B32 result = 0;
if(got_pid)
{
pid_t pid = u64_from_str8(pid_string, 10);
String8 name = dmn_lnx_exe_path_from_pid(arena, pid);
if(name.size == 0)
{
name = str8_lit("(unknown process)");
}
info_out->name = name;
info_out->pid = pid;
result = 1;
}
return result;
}
internal void
dmn_process_iter_end(DMN_ProcessIter *iter)
{
DIR *dir = (DIR*)PtrFromInt(iter->v[0]);
if(dir != 0)
{
closedir(dir);
}
MemoryZeroStruct(iter);
}