2 files changed, 46 insertions, 1 deletions
diff --git a/userland/libc/include/signal.h b/userland/libc/include/signal.h
index 2e6566d..621710b 100644
--- a/userland/libc/include/signal.h
+++ b/userland/libc/include/signal.h
@@ -1,9 +1,52 @@
 #ifndef SIGNAL_H
 #define SIGNAL_H
+#include <sys/types.h>
 #define SIGHUP 0
 #define SIGINT 1
 #define SIGWINCH 2
 #define SIGQUIT 3
 #define SIG_IGN 4
-typedef int sig_atomic_t;
+#define SIGSEGV 5
+#define SIGILL 6
+#define SIGABRT 7
+#define SIGBUS 8
+#define SIGKILL 9
+#define SIGFPE 10
+
+typedef int pid_t;
+typedef int sigset_t;
+
+union sigval {
+  int sival_int;   // Integer signal value.
+  void *sival_ptr; // Pointer signal value.
+};
+
+struct siginfo {
+  int si_signo;          // Signal number.
+  int si_code;           // Signal code.
+  int si_errno;          // If non-zero, an errno value associated with
+                         // this signal, as described in <errno.h>.
+  pid_t si_pid;          // Sending process ID.
+  uid_t si_uid;          // Real user ID of sending process.
+  void *si_addr;         // Address of faulting instruction.
+  int si_status;         // Exit value or signal.
+  long si_band;          // Band event for SIGPOL9
+  union sigval si_value; // Signal value.
+};
+
+typedef struct siginfo siginfo_t;
+
+int kill(pid_t pid, int sig);
+
+struct sigaction {
+  void (*sa_handler)(int); // Pointer to a signal-catching function or one of
+                           // the macros SIG_IGN or SIG_DFL.
+  sigset_t sa_mask; // Additional set of signals to be blocked during execution
+                    // of signal-catching function.
+  int sa_flags;     // Special flags to affect behavior of signal.
+  void (*sa_sigaction)(int, siginfo_t *,
+                       void *); // Pointer to a signal-catching function.
+};
+
+int sigaction(int sig, const struct sigaction *act, struct sigaction *oact);
 #endif // SIGNAL_H
diff --git a/userland/libc/include/syscall.h b/userland/libc/include/syscall.h
index 3af425d..3faafbf 100644
--- a/userland/libc/include/syscall.h
+++ b/userland/libc/include/syscall.h
@@ -34,6 +34,8 @@
 #define SYS_MKDIR 26
 #define SYS_RECVFROM 27
 #define SYS_SENDTO 28
+#define SYS_KILL 29
+#define SYS_SIGACTION 30
 
 int syscall(uint32_t eax, uint32_t ebx, uint32_t ecx, uint32_t edx,
             uint32_t esi, uint32_t edi);