From 56084556bb8746159fb6b72a6aa3dc05704654bc Mon Sep 17 00:00:00 2001
From: Jonas 'Sortie' Termansen <sortie@maxsi.org>
Date: Sat, 14 Jan 2012 16:37:21 +0100
Subject: [PATCH] Added stubs for truncate(2) and ftruncate(3).

---
 libmaxsi/c/hsrc/unistd.h |  4 ++--
 libmaxsi/io.cpp          | 12 ++++++++++++
 sortix/filesystem.cpp    | 16 ++++++++++++++++
 sortix/syscallnum.h      |  4 +++-
 4 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/libmaxsi/c/hsrc/unistd.h b/libmaxsi/c/hsrc/unistd.h
index 45623a3e..9cc326b3 100644
--- a/libmaxsi/c/hsrc/unistd.h
+++ b/libmaxsi/c/hsrc/unistd.h
@@ -102,7 +102,6 @@ int fdatasync(int);
 int fexecve(int, char* const [], char* const []);
 long fpathconf(int, int);
 int fsync(int);
-int ftruncate(int, off_t);
 gid_t getegid(void);
 uid_t geteuid(void);
 gid_t getgid(void);
@@ -142,7 +141,6 @@ void sync(void);
 long sysconf(int);
 pid_t tcgetpgrp(int);
 int tcsetpgrp(int, pid_t);
-int truncate(const char*, off_t);
 char* ttyname(int);
 int ttyname_r(int, char*, size_t);
 int unlinkat(int, const char*, int);
@@ -160,6 +158,7 @@ int close(int);
 int dup(int);
 void _exit(int);
 pid_t fork(void);
+int ftruncate(int, off_t);
 char* getcwd(char*, size_t);
 pid_t getpid(void);
 pid_t getppid(void);
@@ -169,6 +168,7 @@ int pipe(int [2]);
 ssize_t read(int, void*, size_t);
 int rmdir(const char*);
 unsigned sleep(unsigned);
+int truncate(const char*, off_t);
 #if __POSIX_OBSOLETE <= 200112 || defined(SORTIX_EXTENSIONS)
 int usleep(useconds_t useconds);
 #endif
diff --git a/libmaxsi/io.cpp b/libmaxsi/io.cpp
index 8c640271..63ba675a 100644
--- a/libmaxsi/io.cpp
+++ b/libmaxsi/io.cpp
@@ -53,6 +53,8 @@ namespace Maxsi
 	DEFN_SYSCALL3_VOID(SysSeek, SYSCALL_SEEK, int, off_t*, int);
 	DEFN_SYSCALL2(int, SysMkDir, SYSCALL_MKDIR, const char*, mode_t);
 	DEFN_SYSCALL1(int, SysRmDir, SYSCALL_RMDIR, const char*);
+	DEFN_SYSCALL2(int, SysTruncate, SYSCALL_TRUNCATE, const char*, off_t);
+	DEFN_SYSCALL2(int, SysFTruncate, SYSCALL_FTRUNCATE, int, off_t);
 
 	size_t Print(const char* string)
 	{
@@ -268,6 +270,16 @@ namespace Maxsi
 		return SysRmDir(pathname);
 	}
 
+	extern "C" int truncate(const char* pathname, off_t length)
+	{
+		return SysTruncate(pathname, length);
+	}
+
+	extern "C" int ftruncate(int fd, off_t length)
+	{
+		return SysFTruncate(fd, length);
+	}
+
 	extern "C" int isatty(int fd)
 	{
 		return SysIsATTY(fd);
diff --git a/sortix/filesystem.cpp b/sortix/filesystem.cpp
index dfc1a987..c150cf3d 100644
--- a/sortix/filesystem.cpp
+++ b/sortix/filesystem.cpp
@@ -97,12 +97,28 @@ namespace Sortix
 			return -1;
 		}
 
+		int SysTruncate(const char* pathname, off_t length)
+		{
+			// TODO: Add the proper filesystem support!
+			Error::Set(ENOSYS);
+			return -1;
+		}
+
+		int SysFTruncate(const char* pathname, off_t length)
+		{
+			// TODO: Add the proper filesystem support!
+			Error::Set(ENOSYS);
+			return -1;
+		}
+
 		void Init()
 		{
 			Syscall::Register(SYSCALL_OPEN, (void*) SysOpen);
 			Syscall::Register(SYSCALL_UNLINK, (void*) SysUnlink);
 			Syscall::Register(SYSCALL_MKDIR, (void*) SysMkDir);
 			Syscall::Register(SYSCALL_RMDIR, (void*) SysRmDir);
+			Syscall::Register(SYSCALL_TRUNCATE, (void*) SysTruncate);
+			Syscall::Register(SYSCALL_FTRUNCATE, (void*) SysFTruncate);
 		}
 	}
 
diff --git a/sortix/syscallnum.h b/sortix/syscallnum.h
index 77ba3d0e..4dd36f11 100644
--- a/sortix/syscallnum.h
+++ b/sortix/syscallnum.h
@@ -65,7 +65,9 @@
 #define SYSCALL_GET_PAGE_SIZE 37
 #define SYSCALL_MKDIR 38
 #define SYSCALL_RMDIR 39
-#define SYSCALL_MAX_NUM 40 /* index of highest constant + 1 */
+#define SYSCALL_TRUNCATE 40
+#define SYSCALL_FTRUNCATE 41
+#define SYSCALL_MAX_NUM 42 /* index of highest constant + 1 */
 
 #endif