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add cstr union field to String8 and remove char* casts from the Linux code

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This commit is contained in:
Nikita Smith
2026-01-22 14:04:40 -08:00
parent e724ee8185
commit be350c4147
3 changed files with 39 additions and 35 deletions
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src/demon/linux/demon_core_linux.c
+10 -10
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@@ -112,7 +112,7 @@ dmn_lnx_exe_path_from_pid(Arena *arena, pid_t pid)
for(S64 r = 0, cap = PATH_MAX; r < 4; cap *= 2, r += 1)
{
U8 *buffer = push_array(arena, U8, cap);
readlink_result = readlink((char *)exe_link_path.str, (char *)buffer, cap);
readlink_result = readlink(exe_link_path.cstr, (char *)buffer, cap);
if(readlink_result < 0)
{
@@ -139,7 +139,7 @@ dmn_lnx_dl_path_from_pid(Arena *arena, pid_t pid, U64 auxv_base)
String8 dl_path = {0};
int maps_fd = open((char *)str8f(scratch.arena, "/proc/%d/maps", pid).str, O_RDONLY);
int maps_fd = open(str8f(scratch.arena, "/proc/%d/maps", pid).cstr, O_RDONLY);
if(maps_fd != -1)
{
// read entire /proc/pid/maps
@@ -212,7 +212,7 @@ dmn_lnx_ehdr_from_pid(pid_t pid)
ELF_Hdr64 exe = {0};
B32 is_read = 0;
char *exe_path = (char *)push_str8f(scratch.arena, "/proc/%d/exe", pid).str;
char *exe_path = push_str8f(scratch.arena, "/proc/%d/exe", pid).cstr;
int exe_fd = OS_LNX_RETRY_ON_EINTR(open(exe_path, O_RDONLY));
if(exe_fd >= 0)
@@ -234,7 +234,7 @@ dmn_lnx_auxv_from_pid(pid_t pid, ELF_Class elf_class)
// rjf: open aux data
String8 auxv_path = push_str8f(scratch.arena, "/proc/%d/auxv", pid);
int auxv_fd = OS_LNX_RETRY_ON_EINTR(open((char*)auxv_path.str, O_RDONLY));
int auxv_fd = OS_LNX_RETRY_ON_EINTR(open(auxv_path.cstr, O_RDONLY));
// rjf: scan aux data
if(auxv_fd >= 0)
@@ -630,7 +630,7 @@ dmn_lnx_process_alloc(pid_t pid, DMN_LNX_ProcessState state, DMN_LNX_Process *pa
DMN_LNX_Process *process = &dmn_lnx_entity_alloc(DMN_LNX_EntityKind_Process)->process;
process->pid = pid;
process->fd = open((char*)str8f(scratch.arena, "/proc/%d/mem", pid).str, O_RDWR);
process->fd = open(str8f(scratch.arena, "/proc/%d/mem", pid).cstr, O_RDWR);
process->state = state;
process->debug_subprocesses = debug_subprocesses;
process->is_cow = is_cow;
@@ -698,7 +698,7 @@ dmn_lnx_process_ctx_alloc(DMN_LNX_Process *process, B32 is_rebased)
Temp scratch = scratch_begin(0, 0);
String8 dl_path = dmn_lnx_dl_path_from_pid(scratch.arena, process->pid, auxv.base);
int dl_fd = open((char *)dl_path.str, O_RDONLY);
int dl_fd = open(dl_path.cstr, O_RDONLY);
DMN_LNX_ProbeList probes = {0};
if(dl_fd >= 0)
@@ -2157,7 +2157,7 @@ dmn_lnx_event_attach(Arena *arena, DMN_EventList *events, pid_t pid)
// extract threads from /proc/pid/task
{
String8 task_path = push_str8f(scratch.arena, "/proc/%d/task", pid);
DIR *task_dirp = opendir((char *)task_path.str);
DIR *task_dirp = opendir(task_path.cstr);
if(task_dirp)
{
for(;;)
@@ -2279,7 +2279,7 @@ dmn_ctrl_launch(DMN_CtrlCtx *ctx, OS_ProcessLaunchParams *params)
U64 idx = 0;
for EachNode(n, String8Node, params->cmd_line.first)
{
argv[idx++] = (char *)push_str8_copy(scratch.arena, n->string).str;
argv[idx++] = push_str8_copy(scratch.arena, n->string).cstr;
}
}
@@ -2294,12 +2294,12 @@ dmn_ctrl_launch(DMN_CtrlCtx *ctx, OS_ProcessLaunchParams *params)
U64 idx = os_lnx_state.default_env_count;
for EachNode(n, String8Node, params->env.first)
{
envp[idx++] = (char *)push_str8_copy(scratch.arena, n->string).str;
envp[idx++] = push_str8_copy(scratch.arena, n->string).cstr;
}
}
// create zero-terminated work directory path
char *work_dir_path = (char *)push_str8_copy(scratch.arena, params->path).str;
char *work_dir_path = push_str8_copy(scratch.arena, params->path).cstr;
// fork process
pid_t pid = fork();