kernel: implement eventfs/eventfd

patches/mlibc/jinx-working-patch.patch

@@ -452,7 +452,7 @@ index a86353f..3e1a18c 100644
  	return error ? -1 : ret;
  }
 diff --git mlibc-clean/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
-index 3b04372..b7a8ab7 100644
+index 3b04372..5324a35 100644
 --- mlibc-clean/sysdeps/astral/generic/generic.cpp
 +++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
 @@ -1,7 +1,9 @@
@@ -497,7 +497,7 @@ index 3b04372..b7a8ab7 100644
  
  namespace mlibc {
  	int Sysdeps<SetGroups>::operator()(size_t size, const gid_t *list) {
-@@ -31,14 +56,313 @@ namespace mlibc {
+@@ -31,15 +56,324 @@ namespace mlibc {
  		return 0;
  	}
  
@@ -627,9 +627,9 @@ index 3b04372..b7a8ab7 100644
 +	int Sysdeps<GetCurrentStackInfo>::operator()(void **stack_base, size_t *stack_size) {
 +		*stack_size = 1024 * 1024 * 4;
 +		*stack_base = (void *)(0x0000800000000000 - *stack_size);
-+		return 0;
-+	}
-+
+ 		return 0;
+ 	}
+ 
 +#ifndef MLIBC_BUILDING_RTLD
 +	int Sysdeps<Getifaddrs>::operator()(struct ifaddrs **out) {
 +		struct ifaddrs *list = nullptr;
@@ -804,19 +804,30 @@ index 3b04372..b7a8ab7 100644
 +		*out = arr;
 +		freeifaddrs(ifaddrs);
 +
- 		return 0;
- 	}
++		return 0;
++	}
 +#endif
 +
++	int Sysdeps<EventfdCreate>::operator()(unsigned int initval, int flags, int *fd) {
++		long ret;
++		int error = syscall(SYSCALL_EVENTFD, &ret, initval, flags);
++		if (error)
++			return error;
++
++		*fd = ret;
++		return 0;
++	}
++
 +	int Sysdeps<GetSockopt>::operator()(int fd, int layer, int number,
 +		void *__restrict buffer, socklen_t *__restrict size) {
 +		long ret;
 +		return syscall(SYSCALL_GETSOCKOPT, &ret, fd, layer, number, (uint64_t)buffer, (uint64_t)size);
 +	}
- 
++
  	int Sysdeps<InetConfigured>::operator()(bool *ipv4, bool *ipv6) {
  		// there is no ipv6 support in the kernel currently and no way of checking for configured interfaces
-@@ -47,6 +371,71 @@ namespace mlibc {
+ 		*ipv4 = true;
+@@ -47,6 +381,71 @@ namespace mlibc {
  		return 0;
  	}
  
@@ -888,7 +899,7 @@ index 3b04372..b7a8ab7 100644
  	int Sysdeps<Readv>::operator()(int fd, const struct iovec *iovs, int iovc, ssize_t *bytes_read) {
  		long r;
  		int error = syscall(SYSCALL_READV, &r, fd, (uint64_t)iovs, iovc);
-@@ -86,6 +475,11 @@ namespace mlibc {
+@@ -86,6 +485,11 @@ namespace mlibc {
  		return e;
  	}
  
@@ -900,7 +911,7 @@ index 3b04372..b7a8ab7 100644
  	int Sysdeps<Shutdown>::operator()(int sockfd, int how) {
  		long ret;
  		return syscall(SYSCALL_SHUTDOWN, &ret, sockfd, how);
-@@ -487,8 +881,15 @@ namespace mlibc {
+@@ -487,8 +891,15 @@ namespace mlibc {
  		return err;
  	}
  
@@ -916,7 +927,7 @@ index 3b04372..b7a8ab7 100644
  		return syscall(SYSCALL_SETSOCKOPT, &ret, fd, layer, number, (uint64_t)buffer, size);
  	}
  
-@@ -511,6 +912,11 @@ namespace mlibc {
+@@ -511,6 +922,11 @@ namespace mlibc {
  		return err;
  	}
  
@@ -928,7 +939,7 @@ index 3b04372..b7a8ab7 100644
  	int Sysdeps<Renameat>::operator()(int olddirfd, const char *old_path, int newdirfd, const char *new_path) {
  		long ret;
  		return syscall(SYSCALL_RENAMEAT, &ret, olddirfd, (uint64_t)old_path, newdirfd, (uint64_t)new_path);
-@@ -562,6 +968,16 @@ namespace mlibc {
+@@ -562,6 +978,16 @@ namespace mlibc {
  		return sysdep<Ioctl>(fd, TCSETS, (void *)attr, &res);
  	}
  
@@ -945,7 +956,7 @@ index 3b04372..b7a8ab7 100644
  	int Sysdeps<Poll>::operator()(struct pollfd *fds, nfds_t count, int timeout, int *num_events) {
  		long ret;
  		long error = syscall(SYSCALL_POLL, &ret, (uint64_t)fds, count, timeout);
-@@ -932,4 +1348,13 @@ namespace mlibc {
+@@ -932,4 +1358,13 @@ namespace mlibc {
  		*nanos = ts.tv_nsec;
  		return err;
  	}
@@ -982,10 +993,10 @@ index 7e4f2a1..ecc2677 100644
  #ifdef __cplusplus
  extern "C" {
 diff --git mlibc-clean/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
-index a6c4067..160a140 100644
+index a6c4067..9040d45 100644
 --- mlibc-clean/sysdeps/astral/include/astral/syscall.h
 +++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
-@@ -103,6 +103,13 @@
+@@ -103,6 +103,14 @@
  #define SYSCALL_SYSINFO 96
  #define SYSCALL_WRITEV 97
  #define SYSCALL_READV 98
@@ -996,6 +1007,7 @@ index a6c4067..160a140 100644
 +#define SYSCALL_CLOCK_GETRES 103
 +#define SYSCALL_SETPRIORITY 104
 +#define SYSCALL_SYSCTL 105
++#define SYSCALL_EVENTFD 106
  
  #ifndef __MLIBC_ABI_ONLY
  
@@ -1062,7 +1074,7 @@ index 0000000..161f634
 +
 +#endif /* _ASTRAL_SYSCTL_H */
 diff --git mlibc-clean/sysdeps/astral/include/mlibc/sysdeps.hpp mlibc-workdir/sysdeps/astral/include/mlibc/sysdeps.hpp
-index ce91084..54ee08e 100644
+index ce91084..503110a 100644
 --- mlibc-clean/sysdeps/astral/include/mlibc/sysdeps.hpp
 +++ mlibc-workdir/sysdeps/astral/include/mlibc/sysdeps.hpp
 @@ -7,8 +7,30 @@ namespace mlibc {
@@ -1121,7 +1133,7 @@ index ce91084..54ee08e 100644
  	Poll,
  	Ppoll,
  	Pselect,
-@@ -135,7 +161,10 @@ struct AstralSysdepTags :
+@@ -135,7 +161,11 @@ struct AstralSysdepTags :
  	VmUnmap,
  	Isatty,
  	ClockGet,
@@ -1129,7 +1141,8 @@ index ce91084..54ee08e 100644
 +	ClockGetres,
 +	PrepareStack,
 +	SetPriority,
-+	GetCurrentStackInfo
++	GetCurrentStackInfo,
++	EventfdCreate
  {};
  
  template<typename Tag>