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Bug 764436 - Unix back-end;r=taras

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This commit is contained in:
David Rajchenbach-Teller 2012-07-05 10:20:19 +02:00
parent fbba8e7c30
commit 235cb980e2
1 changed files with 84 additions and 1 deletions
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85
toolkit/components/osfile/osfile_unix_back.jsm
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@ -46,7 +46,7 @@
// Open libc
let libc;
let libc_candidates = [ "libSystem.dylib",
let libc_candidates = [ "libsystem.B.dylib",
"libc.so.6",
"libc.so" ];
for (let i = 0; i < libc_candidates.length; ++i) {
@ -150,6 +150,47 @@
Types.intn_t(OS.Constants.libc.OSFILE_SIZEOF_MODE_T),
{name: {value: "mode_t"}});
Types.DIR =
new Type("DIR",
ctypes.StructType("DIR"));
Types.null_or_DIR_ptr =
new Type("null_or_DIR*",
Types.DIR.out_ptr.implementation,
function(dir, operation) {
if (dir == null || dir.isNull()) {
return null;
}
return ctypes.CDataFinalizer(dir, _close_dir);
});
// Structure |dirent|
// Building this type is rather complicated, as its layout varies between
// variants of Unix. For this reason, we rely on a number of constants
// (computed in C from the C data structures) that give us the layout.
// The structure we compute looks like
// { int8_t[...] before_d_type; // ignored content
// int8_t d_type ;
// int8_t[...] before_d_name; // ignored content
// char[...] d_name;
// };
{
let dirent = new OS.Shared.HollowStructure("dirent",
OS.Constants.libc.OSFILE_SIZEOF_DIRENT);
dirent.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_DIRENT_D_TYPE,
"d_type", ctypes.uint8_t);
dirent.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_DIRENT_D_NAME,
"d_name", ctypes.ArrayType(ctypes.char, OS.Constants.libc.OSFILE_SIZEOF_DIRENT_D_NAME));
// We now have built |dirent|.
Types.dirent = dirent.getType();
LOG("dirent is: " + Types.dirent.implementation.toSource());
}
Types.null_or_dirent_ptr =
new Type("null_of_dirent",
Types.dirent.out_ptr.implementation);
// Declare libc functions as functions of |OS.Unix.File|
// Finalizer-related functions
@ -163,6 +204,16 @@
return fd.dispose();
};
let _close_dir =
libc.declare("closedir", ctypes.default_abi,
/*return */ctypes.int,
/*dirp*/ Types.DIR.in_ptr.implementation);
UnixFile.closedir = function closedir(fd) {
// Detach the finalizer and call |_close_dir|.
return fd.dispose();
};
UnixFile.free =
libc.declare("free", ctypes.default_abi,
/*return*/ ctypes.void_t,
@ -284,6 +335,12 @@
/*offset*/ Types.off_t,
/*whence*/ Types.int);
UnixFile.mkdir =
declareFFI("mkdir", ctypes.default_abi,
/*return*/ Types.int,
/*path*/ Types.string,
/*mode*/ Types.int);
UnixFile.mkstemp =
declareFFI("mkstemp", ctypes.default_abi,
/*return*/ Types.null_or_string,
@ -296,6 +353,11 @@
/*oflags*/Types.int,
/*mode*/ Types.int);
UnixFile.opendir =
declareFFI("opendir", ctypes.default_abi,
/*return*/ Types.null_or_DIR_ptr,
/*path*/ Types.string);
UnixFile.pread =
declareFFI("pread", ctypes.default_abi,
/*return*/ Types.negativeone_or_ssize_t,
@ -319,12 +381,33 @@
/*buf*/ Types.char.out_ptr,
/*nbytes*/Types.size_t);
if (OS.Constants.libc._DARWIN_FEATURE_64_BIT_INODE) {
// Special case for MacOS X 10.5+
// Symbol name "readdir" still exists but is used for a
// deprecated function that does not match the
// constants of |OS.Constants.libc|.
UnixFile.readdir =
declareFFI("readdir$INODE64", ctypes.default_abi,
/*return*/Types.null_or_dirent_ptr,
/*dir*/ Types.DIR.in_ptr); // For MacOS X
} else {
UnixFile.readdir =
declareFFI("readdir", ctypes.default_abi,
/*return*/Types.null_or_dirent_ptr,
/*dir*/ Types.DIR.in_ptr); // Other Unices
}
UnixFile.rename =
declareFFI("rename", ctypes.default_abi,
/*return*/ Types.negativeone_or_nothing,
/*old*/ Types.string,
/*new*/ Types.string);
UnixFile.rmdir =
declareFFI("rmdir", ctypes.default_abi,
/*return*/ Types.int,
/*path*/ Types.string);
UnixFile.splice =
declareFFI("splice", ctypes.default_abi,
/*return*/ Types.long,