Adding fsync function to libc glue functions

src/libcglue/Makefile.am

@@ -17,7 +17,7 @@ CPPFLAGS = -I$(top_srcdir)/src/base \
 CFLAGS = @PSPSDK_CFLAGS@
 CCASFLAGS = $(CFLAGS)
 
-CWD_OBJS = __cwd.o getcwd.o __path_absolute.o __init_cwd.o
+CWD_OBJS = __cwd.o __get_drive.o getcwd.o __path_absolute.o __init_cwd.o
 
 ERRNO_OBJS = __set_errno.o
 
@@ -28,7 +28,7 @@ GLUE_OBJS = __fill_stat.o __psp_heap_blockid.o __psp_free_heap.o _fork.o _wait.o
 	_stat.o lstat.o access.o _fcntl.o  _lseek.o chdir.o mkdir.o rmdir.o getdents.o _seekdir.o _link.o _unlink.o \
 	_rename.o _getpid.o _kill.o _sbrk.o _gettimeofday.o _times.o ftime.o _internal_malloc_lock.o _internal_malloc_unlock.o \
 	_isatty.o symlink.o truncate.o chmod.o fchmod.o fchmodat.o pathconf.o readlink.o utime.o fchown.o getentropy.o getpwuid.o \
-	getpwnam.o getuid.o geteuid.o
+	fsync.o getpwnam.o getuid.o geteuid.o
 
 
 INIT_OBJS = __libcglue_init.o __libcglue_deinit.o _exit.o abort.o exit.o

src/libcglue/cwd.c

@@ -25,6 +25,24 @@ char __cwd[MAXNAMLEN + 1] = { 0 };
 extern char __cwd[MAXNAMLEN + 1];
 #endif
 
+#ifdef F___get_drive
+/* Return the number of bytes taken up by the "drive:" prefix,
+   or -1 if it's not found */
+int __get_drive(const char *d)
+{
+	int i;
+	for(i=0; d[i]; i++) {
+		if(! ((d[i] >= 'a' && d[i] <= 'z') ||
+		      (d[i] >= '0' && d[i] <= '9') ))
+			break;
+	}
+	if(d[i] == ':') return i+1;
+	return -1;
+}
+#else 
+int __get_drive(const char *d);
+#endif
+
 #ifdef F_getcwd
 char *getcwd(char *buf, size_t size)
 {
@@ -120,20 +138,6 @@ static int __path_normalize(char *out, int len)
 	return 0;
 }
 
-/* Return the number of bytes taken up by the "drive:" prefix,
-   or -1 if it's not found */
-static int __get_drive(const char *d)
-{
-	int i;
-	for(i=0; d[i]; i++) {
-		if(! ((d[i] >= 'a' && d[i] <= 'z') ||
-		      (d[i] >= '0' && d[i] <= '9') ))
-			break;
-	}
-	if(d[i] == ':') return i+1;
-	return -1;
-}
-
 /* Convert relative path to absolute path. */
 int __path_absolute(const char *in, char *out, int len)
 {

src/libcglue/glue.c

@@ -50,6 +50,7 @@ extern unsigned int sce_newlib_heap_threshold_kb_size __attribute__((weak));
 
 /* Functions from cwd.c */
 extern char __cwd[MAXNAMLEN + 1];
+int __get_drive(const char *d);
 int __path_absolute(const char *in, char *out, int len);
 
 /* Functions from mutexman.c */
@@ -929,6 +930,24 @@ int getentropy(void *buffer, size_t length) {
 }
 #endif
 
+#ifdef F_fsync
+int fsync(int fd) {
+	char devname[10]= { 0 };
+	int dr;
+
+	dr = __get_drive(__descriptormap[fd]->filename);
+	if (dr <= 0 || dr >= 10) {
+		errno = ENODEV;
+		return -1;
+	}
+
+	strncpy(devname, __descriptormap[fd]->filename, dr);
+	devname[dr] = '\0';
+
+	return __set_errno(sceIoSync(devname, 0));
+}
+#endif
+
 #ifdef F_getuid
 uid_t getuid(void) {
 	return 1000;