3 files changed, 44 insertions, 8 deletions
diff --git a/std/c/darwin.zig b/std/c/darwin.zig
index 1bd1d6c4c9..2e238e40eb 100644
--- a/std/c/darwin.zig
+++ b/std/c/darwin.zig
@@ -1,5 +1,8 @@
+const macho = @import("../macho.zig");
+
 extern "c" fn __error() *c_int;
 pub extern "c" fn _NSGetExecutablePath(buf: [*]u8, bufsize: *u32) c_int;
+pub extern "c" fn _dyld_get_image_header(image_index: u32) ?*mach_header;
 
 pub extern "c" fn __getdirentries64(fd: c_int, buf_ptr: [*]u8, buf_len: usize, basep: *i64) usize;
 
@@ -30,10 +33,45 @@ pub extern "c" fn sysctl(name: [*]c_int, namelen: c_uint, oldp: ?*c_void, oldlen
 pub extern "c" fn sysctlbyname(name: [*]const u8, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
 pub extern "c" fn sysctlnametomib(name: [*]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
 
+pub extern "c" fn bind(socket: c_int, address: ?*const sockaddr, address_len: socklen_t) c_int;
+pub extern "c" fn socket(domain: c_int, type: c_int, protocol: c_int) c_int;
+
+/// The value of the link editor defined symbol _MH_EXECUTE_SYM is the address
+/// of the mach header in a Mach-O executable file type.  It does not appear in
+/// any file type other than a MH_EXECUTE file type.  The type of the symbol is
+/// absolute as the header is not part of any section.
+pub extern "c" var _mh_execute_header: if (@sizeOf(usize) == 8) mach_header_64 else mach_header;
+
+pub const mach_header_64 = macho.mach_header_64;
+pub const mach_header = macho.mach_header;
+
 pub use @import("../os/darwin/errno.zig");
 
 pub const _errno = __error;
 
+pub const in_port_t = u16;
+pub const sa_family_t = u8;
+pub const socklen_t = u32;
+pub const sockaddr = extern union {
+    in: sockaddr_in,
+    in6: sockaddr_in6,
+};
+pub const sockaddr_in = extern struct {
+    len: u8,
+    family: sa_family_t,
+    port: in_port_t,
+    addr: u32,
+    zero: [8]u8,
+};
+pub const sockaddr_in6 = extern struct {
+    len: u8,
+    family: sa_family_t,
+    port: in_port_t,
+    flowinfo: u32,
+    addr: [16]u8,
+    scope_id: u32,
+};
+
 pub const timeval = extern struct {
     tv_sec: isize,
     tv_usec: isize,
@@ -98,14 +136,6 @@ pub const dirent = extern struct {
     d_name: u8, // field address is address of first byte of name
 };
 
-pub const sockaddr = extern struct {
-    sa_len: u8,
-    sa_family: sa_family_t,
-    sa_data: [14]u8,
-};
-
-pub const sa_family_t = u8;
-
 pub const pthread_attr_t = extern struct {
     __sig: c_long,
     __opaque: [56]u8,
diff --git a/std/c/index.zig b/std/c/index.zig
index 7de8634d07..6b20d718ef 100644
--- a/std/c/index.zig
+++ b/std/c/index.zig
@@ -21,8 +21,10 @@ pub extern "c" fn lseek(fd: c_int, offset: isize, whence: c_int) isize;
 pub extern "c" fn open(path: [*]const u8, oflag: c_int, ...) c_int;
 pub extern "c" fn raise(sig: c_int) c_int;
 pub extern "c" fn read(fd: c_int, buf: *c_void, nbyte: usize) isize;
+pub extern "c" fn pread(fd: c_int, buf: *c_void, nbyte: usize, offset: u64) isize;
 pub extern "c" fn stat(noalias path: [*]const u8, noalias buf: *Stat) c_int;
 pub extern "c" fn write(fd: c_int, buf: *const c_void, nbyte: usize) isize;
+pub extern "c" fn pwrite(fd: c_int, buf: *const c_void, nbyte: usize, offset: u64) isize;
 pub extern "c" fn mmap(addr: ?*c_void, len: usize, prot: c_int, flags: c_int, fd: c_int, offset: isize) ?*c_void;
 pub extern "c" fn munmap(addr: *c_void, len: usize) c_int;
 pub extern "c" fn unlink(path: [*]const u8) c_int;
@@ -58,6 +60,7 @@ pub extern "pthread" fn pthread_create(noalias newthread: *pthread_t, noalias at
 pub extern "pthread" fn pthread_attr_init(attr: *pthread_attr_t) c_int;
 pub extern "pthread" fn pthread_attr_setstack(attr: *pthread_attr_t, stackaddr: *c_void, stacksize: usize) c_int;
 pub extern "pthread" fn pthread_attr_destroy(attr: *pthread_attr_t) c_int;
+pub extern "pthread" fn pthread_self() pthread_t;
 pub extern "pthread" fn pthread_join(thread: pthread_t, arg_return: ?*?*c_void) c_int;
 
 pub const pthread_t = *@OpaqueType();
diff --git a/std/c/linux.zig b/std/c/linux.zig
index 2699e9bd09..b0dadf071d 100644
--- a/std/c/linux.zig
+++ b/std/c/linux.zig
@@ -8,3 +8,6 @@ pub const pthread_attr_t = extern struct {
     __size: [56]u8,
     __align: c_long,
 };
+
+/// See std.elf for constants for this
+pub extern fn getauxval(__type: c_ulong) c_ulong;