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proc

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Leonmmcoset
2026-04-17 17:28:49 +08:00
parent f93af4a2a6
commit 42b5925222
11 changed files with 699 additions and 50 deletions
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410
clks/kernel/syscall.c
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@@ -25,6 +25,7 @@
#define CLKS_SYSCALL_ARG_LINE_MAX 256U
#define CLKS_SYSCALL_ENV_LINE_MAX 512U
#define CLKS_SYSCALL_ITEM_MAX 128U
#define CLKS_SYSCALL_PROCFS_TEXT_MAX 2048U
#define CLKS_SYSCALL_USER_TRACE_BUDGET 128ULL
struct clks_syscall_frame {
@@ -166,6 +167,333 @@ static u64 clks_syscall_kbd_get_char(void) {
return (u64)(u8)ch;
}
static clks_bool clks_syscall_procfs_is_root(const char *path) {
return (path != CLKS_NULL && clks_strcmp(path, "/proc") == 0) ? CLKS_TRUE : CLKS_FALSE;
}
static clks_bool clks_syscall_procfs_is_self(const char *path) {
return (path != CLKS_NULL && clks_strcmp(path, "/proc/self") == 0) ? CLKS_TRUE : CLKS_FALSE;
}
static clks_bool clks_syscall_procfs_is_list(const char *path) {
return (path != CLKS_NULL && clks_strcmp(path, "/proc/list") == 0) ? CLKS_TRUE : CLKS_FALSE;
}
static clks_bool clks_syscall_parse_u64_dec(const char *text, u64 *out_value) {
u64 value = 0ULL;
usize i = 0U;
if (text == CLKS_NULL || out_value == CLKS_NULL || text[0] == '\0') {
return CLKS_FALSE;
}
while (text[i] != '\0') {
u64 digit;
if (text[i] < '0' || text[i] > '9') {
return CLKS_FALSE;
}
digit = (u64)(text[i] - '0');
if (value > ((0xFFFFFFFFFFFFFFFFULL - digit) / 10ULL)) {
return CLKS_FALSE;
}
value = (value * 10ULL) + digit;
i++;
}
*out_value = value;
return CLKS_TRUE;
}
static clks_bool clks_syscall_procfs_parse_pid(const char *path, u64 *out_pid) {
const char *part;
usize i = 0U;
char pid_text[32];
u64 pid;
if (path == CLKS_NULL || out_pid == CLKS_NULL) {
return CLKS_FALSE;
}
if (path[0] != '/' || path[1] != 'p' || path[2] != 'r' || path[3] != 'o' || path[4] != 'c' || path[5] != '/') {
return CLKS_FALSE;
}
part = &path[6];
if (part[0] == '\0' || clks_strcmp(part, "self") == 0 || clks_strcmp(part, "list") == 0) {
return CLKS_FALSE;
}
while (part[i] != '\0') {
if (i + 1U >= sizeof(pid_text)) {
return CLKS_FALSE;
}
if (part[i] < '0' || part[i] > '9') {
return CLKS_FALSE;
}
pid_text[i] = part[i];
i++;
}
pid_text[i] = '\0';
if (clks_syscall_parse_u64_dec(pid_text, &pid) == CLKS_FALSE || pid == 0ULL) {
return CLKS_FALSE;
}
*out_pid = pid;
return CLKS_TRUE;
}
static const char *clks_syscall_proc_state_name(u64 state) {
if (state == CLKS_EXEC_PROC_STATE_PENDING) {
return "PENDING";
}
if (state == CLKS_EXEC_PROC_STATE_RUNNING) {
return "RUNNING";
}
if (state == CLKS_EXEC_PROC_STATE_STOPPED) {
return "STOPPED";
}
if (state == CLKS_EXEC_PROC_STATE_EXITED) {
return "EXITED";
}
return "UNUSED";
}
static usize clks_syscall_procfs_append_char(char *out, usize out_size, usize pos, char ch) {
if (out == CLKS_NULL || out_size == 0U) {
return pos;
}
if (pos + 1U < out_size) {
out[pos] = ch;
out[pos + 1U] = '\0';
return pos + 1U;
}
out[out_size - 1U] = '\0';
return pos;
}
static usize clks_syscall_procfs_append_text(char *out, usize out_size, usize pos, const char *text) {
usize i = 0U;
if (text == CLKS_NULL) {
return pos;
}
while (text[i] != '\0') {
pos = clks_syscall_procfs_append_char(out, out_size, pos, text[i]);
i++;
}
return pos;
}
static usize clks_syscall_procfs_append_u64_dec(char *out, usize out_size, usize pos, u64 value) {
char temp[32];
usize len = 0U;
usize i;
if (value == 0ULL) {
return clks_syscall_procfs_append_char(out, out_size, pos, '0');
}
while (value != 0ULL && len + 1U < sizeof(temp)) {
temp[len++] = (char)('0' + (value % 10ULL));
value /= 10ULL;
}
for (i = 0U; i < len; i++) {
pos = clks_syscall_procfs_append_char(out, out_size, pos, temp[len - 1U - i]);
}
return pos;
}
static usize clks_syscall_procfs_append_u64_hex(char *out, usize out_size, usize pos, u64 value) {
i32 nibble;
pos = clks_syscall_procfs_append_text(out, out_size, pos, "0X");
for (nibble = 15; nibble >= 0; nibble--) {
u64 current = (value >> (u64)(nibble * 4)) & 0x0FULL;
char ch = (current < 10ULL) ? (char)('0' + current) : (char)('A' + (current - 10ULL));
pos = clks_syscall_procfs_append_char(out, out_size, pos, ch);
}
return pos;
}
static clks_bool clks_syscall_procfs_snapshot_for_path(const char *path, struct clks_exec_proc_snapshot *out_snap) {
u64 pid;
if (path == CLKS_NULL || out_snap == CLKS_NULL) {
return CLKS_FALSE;
}
if (clks_syscall_procfs_is_self(path) == CLKS_TRUE) {
pid = clks_exec_current_pid();
if (pid == 0ULL) {
return CLKS_FALSE;
}
return clks_exec_proc_snapshot(pid, out_snap);
}
if (clks_syscall_procfs_parse_pid(path, &pid) == CLKS_TRUE) {
return clks_exec_proc_snapshot(pid, out_snap);
}
return CLKS_FALSE;
}
static usize clks_syscall_procfs_render_snapshot(char *out,
usize out_size,
const struct clks_exec_proc_snapshot *snap) {
usize pos = 0U;
if (out == CLKS_NULL || out_size == 0U || snap == CLKS_NULL) {
return 0U;
}
out[0] = '\0';
pos = clks_syscall_procfs_append_text(out, out_size, pos, "pid=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->pid);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "ppid=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->ppid);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "state=");
pos = clks_syscall_procfs_append_text(out, out_size, pos, clks_syscall_proc_state_name(snap->state));
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "state_id=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->state);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "tty=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->tty_index);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "runtime_ticks=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->runtime_ticks);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "mem_bytes=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->mem_bytes);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "exit_status=");
pos = clks_syscall_procfs_append_u64_hex(out, out_size, pos, snap->exit_status);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "last_signal=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->last_signal);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "last_fault_vector=");
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap->last_fault_vector);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "last_fault_error=");
pos = clks_syscall_procfs_append_u64_hex(out, out_size, pos, snap->last_fault_error);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "last_fault_rip=");
pos = clks_syscall_procfs_append_u64_hex(out, out_size, pos, snap->last_fault_rip);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
pos = clks_syscall_procfs_append_text(out, out_size, pos, "path=");
pos = clks_syscall_procfs_append_text(out, out_size, pos, snap->path);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
return pos;
}
static usize clks_syscall_procfs_render_list(char *out, usize out_size) {
usize pos = 0U;
u64 proc_count = clks_exec_proc_count();
u64 i;
if (out == CLKS_NULL || out_size == 0U) {
return 0U;
}
out[0] = '\0';
pos = clks_syscall_procfs_append_text(out, out_size, pos, "pid state tty runtime mem path\n");
for (i = 0ULL; i < proc_count; i++) {
u64 pid = 0ULL;
struct clks_exec_proc_snapshot snap;
if (clks_exec_proc_pid_at(i, &pid) == CLKS_FALSE || pid == 0ULL) {
continue;
}
if (clks_exec_proc_snapshot(pid, &snap) == CLKS_FALSE) {
continue;
}
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap.pid);
pos = clks_syscall_procfs_append_char(out, out_size, pos, ' ');
pos = clks_syscall_procfs_append_text(out, out_size, pos, clks_syscall_proc_state_name(snap.state));
pos = clks_syscall_procfs_append_char(out, out_size, pos, ' ');
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap.tty_index);
pos = clks_syscall_procfs_append_char(out, out_size, pos, ' ');
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap.runtime_ticks);
pos = clks_syscall_procfs_append_char(out, out_size, pos, ' ');
pos = clks_syscall_procfs_append_u64_dec(out, out_size, pos, snap.mem_bytes);
pos = clks_syscall_procfs_append_char(out, out_size, pos, ' ');
pos = clks_syscall_procfs_append_text(out, out_size, pos, snap.path);
pos = clks_syscall_procfs_append_char(out, out_size, pos, '\n');
}
return pos;
}
static clks_bool clks_syscall_procfs_render_file(const char *path,
char *out,
usize out_size,
usize *out_len) {
struct clks_exec_proc_snapshot snap;
if (out_len != CLKS_NULL) {
*out_len = 0U;
}
if (path == CLKS_NULL || out == CLKS_NULL || out_size == 0U || out_len == CLKS_NULL) {
return CLKS_FALSE;
}
if (clks_syscall_procfs_is_list(path) == CLKS_TRUE) {
*out_len = clks_syscall_procfs_render_list(out, out_size);
return CLKS_TRUE;
}
if (clks_syscall_procfs_snapshot_for_path(path, &snap) == CLKS_TRUE) {
*out_len = clks_syscall_procfs_render_snapshot(out, out_size, &snap);
return CLKS_TRUE;
}
return CLKS_FALSE;
}
static u64 clks_syscall_fs_child_count(u64 arg0) {
char path[CLKS_SYSCALL_PATH_MAX];
@@ -173,6 +501,10 @@ static u64 clks_syscall_fs_child_count(u64 arg0) {
return (u64)-1;
}
if (clks_syscall_procfs_is_root(path) == CLKS_TRUE) {
return 2ULL + clks_exec_proc_count();
}
return clks_fs_count_children(path);
}
@@ -187,6 +519,41 @@ static u64 clks_syscall_fs_get_child_name(u64 arg0, u64 arg1, u64 arg2) {
return 0ULL;
}
if (clks_syscall_procfs_is_root(path) == CLKS_TRUE) {
if (arg1 == 0ULL) {
clks_memset((void *)arg2, 0, CLKS_SYSCALL_NAME_MAX);
clks_memcpy((void *)arg2, "self", 5U);
return 1ULL;
}
if (arg1 == 1ULL) {
clks_memset((void *)arg2, 0, CLKS_SYSCALL_NAME_MAX);
clks_memcpy((void *)arg2, "list", 5U);
return 1ULL;
}
{
u64 pid = 0ULL;
char pid_text[32];
usize len;
if (clks_exec_proc_pid_at(arg1 - 2ULL, &pid) == CLKS_FALSE || pid == 0ULL) {
return 0ULL;
}
clks_memset(pid_text, 0, sizeof(pid_text));
len = clks_syscall_procfs_append_u64_dec(pid_text, sizeof(pid_text), 0U, pid);
if (len + 1U > CLKS_SYSCALL_NAME_MAX) {
return 0ULL;
}
clks_memset((void *)arg2, 0, CLKS_SYSCALL_NAME_MAX);
clks_memcpy((void *)arg2, pid_text, len + 1U);
return 1ULL;
}
}
if (clks_fs_get_child_name(path, arg1, (char *)arg2, (usize)CLKS_SYSCALL_NAME_MAX) == CLKS_FALSE) {
return 0ULL;
}
@@ -208,6 +575,26 @@ static u64 clks_syscall_fs_read(u64 arg0, u64 arg1, u64 arg2) {
return 0ULL;
}
if (clks_syscall_procfs_is_list(path) == CLKS_TRUE ||
clks_syscall_procfs_is_self(path) == CLKS_TRUE ||
clks_syscall_procfs_parse_pid(path, &file_size) == CLKS_TRUE) {
char proc_text[CLKS_SYSCALL_PROCFS_TEXT_MAX];
usize proc_len = 0U;
if (clks_syscall_procfs_render_file(path, proc_text, sizeof(proc_text), &proc_len) == CLKS_FALSE) {
return 0ULL;
}
copy_len = ((u64)proc_len < arg2) ? (u64)proc_len : arg2;
if (copy_len == 0ULL) {
return 0ULL;
}
clks_memcpy((void *)arg1, proc_text, (usize)copy_len);
return copy_len;
}
data = clks_fs_read_all(path, &file_size);
if (data == CLKS_NULL || file_size == 0ULL) {
@@ -452,11 +839,24 @@ static u64 clks_syscall_audio_stop(void) {
static u64 clks_syscall_fs_stat_type(u64 arg0) {
char path[CLKS_SYSCALL_PATH_MAX];
struct clks_fs_node_info info;
struct clks_exec_proc_snapshot snap;
if (clks_syscall_copy_user_string(arg0, path, sizeof(path)) == CLKS_FALSE) {
return (u64)-1;
}
if (clks_syscall_procfs_is_root(path) == CLKS_TRUE) {
return (u64)CLKS_FS_NODE_DIR;
}
if (clks_syscall_procfs_is_list(path) == CLKS_TRUE || clks_syscall_procfs_is_self(path) == CLKS_TRUE) {
return (u64)CLKS_FS_NODE_FILE;
}
if (clks_syscall_procfs_snapshot_for_path(path, &snap) == CLKS_TRUE) {
return (u64)CLKS_FS_NODE_FILE;
}
if (clks_fs_stat(path, &info) == CLKS_FALSE) {
return (u64)-1;
}
@@ -467,11 +867,21 @@ static u64 clks_syscall_fs_stat_type(u64 arg0) {
static u64 clks_syscall_fs_stat_size(u64 arg0) {
char path[CLKS_SYSCALL_PATH_MAX];
struct clks_fs_node_info info;
char proc_text[CLKS_SYSCALL_PROCFS_TEXT_MAX];
usize proc_len = 0U;
if (clks_syscall_copy_user_string(arg0, path, sizeof(path)) == CLKS_FALSE) {
return (u64)-1;
}
if (clks_syscall_procfs_is_root(path) == CLKS_TRUE) {
return 0ULL;
}
if (clks_syscall_procfs_render_file(path, proc_text, sizeof(proc_text), &proc_len) == CLKS_TRUE) {
return (u64)proc_len;
}
if (clks_fs_stat(path, &info) == CLKS_FALSE) {
return (u64)-1;
}