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feat: implement kernel capability model

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This commit is contained in:
daniel
2026-08-29 16:53:04 +02:00
parent 9051b8a16e
commit e7646bbbdb
47 changed files with 1507 additions and 264 deletions
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programs/include/montauk/syscall.h
+29 -7
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@@ -120,6 +120,13 @@ namespace montauk {
inline int spawn(const char* path, const char* args = nullptr) {
return (int)syscall2(montauk::abi::SYS_SPAWN, (uint64_t)path, (uint64_t)args);
}
inline int spawn_with_caps(const char* path, const char* args,
const char* user,
const montauk::abi::SpawnCapabilities& capabilities) {
return (int)syscall4(montauk::abi::SYS_SPAWN_CAPS, (uint64_t)path,
(uint64_t)args, (uint64_t)user,
(uint64_t)&capabilities);
}
inline int chdir(const char* path) {
return (int)syscall1(montauk::abi::SYS_CHDIR, (uint64_t)path);
}
@@ -391,7 +398,10 @@ namespace montauk {
}
// Timezone offset (total minutes from UTC)
inline void settz(int offset_minutes) { syscall1(montauk::abi::SYS_SETTZ, (uint64_t)(int64_t)offset_minutes); }
inline int settz(int offset_minutes) {
return (int)syscall1(montauk::abi::SYS_SETTZ,
(uint64_t)(int64_t)offset_minutes);
}
inline int gettz() { return (int)syscall0(montauk::abi::SYS_GETTZ); }
// Random number generation
@@ -400,14 +410,12 @@ namespace montauk {
}
// Power management
[[noreturn]] inline void reset() {
syscall0(montauk::abi::SYS_RESET);
__builtin_unreachable();
inline int reset() {
return (int)syscall0(montauk::abi::SYS_RESET);
}
[[noreturn]] inline void shutdown() {
syscall0(montauk::abi::SYS_SHUTDOWN);
__builtin_unreachable();
inline int shutdown() {
return (int)syscall0(montauk::abi::SYS_SHUTDOWN);
}
inline int suspend() {
@@ -423,6 +431,13 @@ namespace montauk {
return (int)syscall1(montauk::abi::SYS_POWER_REQUEST, (uint64_t)(int64_t)action);
}
// Non-destructive read of the pending request, for a session leader that
// must stand down when something inside its session (the shell's shutdown
// builtin, say) asked for power-off. Returns POWER_REQ_QUERY when idle.
inline int power_request_pending() {
return power_request(montauk::abi::POWER_REQ_PEEK);
}
// Mouse
inline void mouse_state(montauk::abi::MouseState* out) { syscall1(montauk::abi::SYS_MOUSESTATE, (uint64_t)out); }
inline void set_mouse_bounds(int32_t maxX, int32_t maxY) {
@@ -447,6 +462,13 @@ namespace montauk {
inline int spawn_redir(const char* path, const char* args = nullptr) {
return (int)syscall2(montauk::abi::SYS_SPAWN_REDIR, (uint64_t)path, (uint64_t)args);
}
inline int spawn_redir_with_caps(
const char* path, const char* args,
const montauk::abi::SpawnCapabilities& capabilities) {
return (int)syscall3(montauk::abi::SYS_SPAWN_REDIR_CAPS,
(uint64_t)path, (uint64_t)args,
(uint64_t)&capabilities);
}
inline int childio_read(int childPid, char* buf, int maxLen) {
return (int)syscall3(montauk::abi::SYS_CHILDIO_READ, (uint64_t)childPid, (uint64_t)buf, (uint64_t)maxLen);
}