os: move C struct declarations in their own _default.c.v files (#12268)

vlib/os/os.c.v

@@ -7,10 +7,6 @@ pub const (
 	args = []string{}
 )
 
-struct C.dirent {
-	d_name [256]char
-}
-
 fn C.readdir(voidptr) &C.dirent
 
 fn C.readlink(pathname &char, buf &char, bufsiz usize) int
@@ -41,36 +37,6 @@ fn C.ftruncate(voidptr, u64) int
 
 fn C._chsize_s(voidptr, u64) int
 
-// fn C.proc_pidpath(int, byteptr, int) int
-struct C.stat {
-	st_size  u64
-	st_mode  u32
-	st_mtime int
-}
-
-struct C.__stat64 {
-	st_size  u64
-	st_mode  u32
-	st_mtime int
-}
-
-struct C.DIR {
-}
-
-type FN_SA_Handler = fn (sig int)
-
-struct C.sigaction {
-mut:
-	sa_mask      int
-	sa_sigaction int
-	sa_flags     int
-	sa_handler   FN_SA_Handler
-}
-
-struct C.dirent {
-	d_name &byte
-}
-
 // read_bytes returns all bytes read from file in `path`.
 [manualfree]
 pub fn read_bytes(path string) ?[]byte {
@@ -890,12 +856,12 @@ pub fn wait() int {
 }
 
 // file_last_mod_unix returns the "last modified" time stamp of file in `path`.
-pub fn file_last_mod_unix(path string) int {
+pub fn file_last_mod_unix(path string) i64 {
 	attr := C.stat{}
 	// # struct stat attr;
 	unsafe { C.stat(&char(path.str), &attr) }
 	// # stat(path.str, &attr);
-	return attr.st_mtime
+	return i64(attr.st_mtime)
 	// # return attr.st_mtime ;
 }
 

vlib/os/os_nix.c.v

@@ -43,20 +43,6 @@ pub const (
 	s_ixoth = 0o0001 // Execute by others
 )
 
-struct C.utsname {
-mut:
-	sysname  &char
-	nodename &char
-	release  &char
-	version  &char
-	machine  &char
-}
-
-struct C.utimbuf {
-	actime  int
-	modtime int
-}
-
 fn C.utime(&char, voidptr) int
 
 fn C.uname(name voidptr) int

vlib/os/os_structs_dirent_default.c.v

@@ -0,0 +1,5 @@
+module os
+
+struct C.dirent {
+	d_name [256]char
+}

vlib/os/os_structs_sigaction_default.c.v

@@ -0,0 +1,11 @@
+module os
+
+pub type FN_SA_Handler = fn (sig int)
+
+struct C.sigaction {
+mut:
+	sa_mask      int
+	sa_sigaction int
+	sa_flags     int
+	sa_handler   FN_SA_Handler
+}

vlib/os/os_structs_stat_default.c.v

@@ -0,0 +1,13 @@
+module os
+
+struct C.stat {
+	st_size  u64
+	st_mode  u32
+	st_mtime int
+}
+
+struct C.__stat64 {
+	st_size  u64
+	st_mode  u32
+	st_mtime int
+}

vlib/os/os_structs_stat_linux.c.v

@@ -0,0 +1,23 @@
+module os
+
+struct C.stat {
+	st_dev     u64 // 8
+	st_ino     u64 // 8
+	st_nlink   u64 // 8
+	st_mode    u32 // 4
+	st_uid     u32 // 4
+	st_gid     u32 // 4
+	st_rdev    u64 // 8
+	st_size    u64 // 8
+	st_blksize u64 // 8
+	st_blocks  u64 // 8
+	st_atime   i64 // 8
+	st_mtime   i64 // 8
+	st_ctime   i64 // 8
+}
+
+struct C.__stat64 {
+	st_mode  u32
+	st_size  u64
+	st_mtime u64
+}

vlib/os/os_structs_utsname_default.c.v

@@ -0,0 +1,15 @@
+module os
+
+struct C.utsname {
+mut:
+	sysname  &char
+	nodename &char
+	release  &char
+	version  &char
+	machine  &char
+}
+
+struct C.utimbuf {
+	actime  int
+	modtime int
+}