Fix struct sigaction defintion.

include/bits/signal.h

@@ -5,4 +5,18 @@
 #define SIG_IGN ((void (*)(int))1)
 #define SIG_ERR ((void (*)(int))-1)
 
+struct siginfo;
+typedef struct siginfo siginfo_t;
+typedef unsigned long long sigset_t;
+
+struct sigaction {
+  union {
+    void (*sa_handler)(int);
+    void (*sa_sigaction)(int, siginfo_t *, void *);
+  };
+  unsigned long sa_flags;
+  void (*sa_restorer)(void);
+  sigset_t sa_mask;
+};
+
 #endif // _BITS_SIGNAL_H

src/header/signal/cbindgen.toml

@@ -1,4 +1,4 @@
-sys_includes = ["stdint.h", "sys/types.h", "time.h", "bits/pthread.h"]
+sys_includes = ["bits/signal.h", "stdint.h", "sys/types.h", "time.h", "bits/pthread.h"]
 include_guard = "_RELIBC_SIGNAL_H"
 trailer = "#include <bits/signal.h>"
 language = "C"
@@ -15,3 +15,4 @@ prefix_with_name = true
 
 [export.rename]
 "timespec" = "struct timespec"
+"sigaction" = "struct sigaction"

src/header/signal/mod.rs

@@ -35,6 +35,7 @@ pub const SIG_SETMASK: c_int = 2;
 
 #[repr(C)]
 #[derive(Clone, Debug)]
+/// cbindgen:ignore
 pub struct sigaction {
     pub sa_handler: Option<extern "C" fn(c_int)>,
     pub sa_flags: c_ulong,
@@ -52,7 +53,7 @@ pub struct sigaltstack {
 
 #[repr(C)]
 #[derive(Clone, Debug)]
-pub struct siginfo_t {
+pub struct siginfo {
     pub si_signo: c_int,
     pub si_errno: c_int,
     pub si_code: c_int,
@@ -60,7 +61,10 @@ pub struct siginfo_t {
     _si_align: [usize; 0],
 }
 
+/// cbindgen:ignore
 pub type sigset_t = c_ulonglong;
+/// cbindgen:ignore
+pub type siginfo_t = siginfo;
 
 pub type stack_t = sigaltstack;