Add dl_iterate_phdr for freebsd

Author: tesuji

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -1502,7 +1502,7 @@ extern "C" {
     pub fn nmount(
         iov: *mut ::iovec,
         niov: ::c_uint,
-        flags: ::c_int
+        flags: ::c_int,
     ) -> ::c_int;
 }
 

src/unix/bsd/freebsdlike/mod.rs

@@ -14,6 +14,38 @@ pub type nl_item = ::c_int;
 pub type id_t = i64;
 pub type vm_size_t = ::uintptr_t;
 
+// elf.h
+
+pub type Elf32_Addr = u32;
+pub type Elf32_Half = u16;
+pub type Elf32_Lword = u64;
+pub type Elf32_Off = u32;
+pub type Elf32_Sword = i32;
+pub type Elf32_Word = u32;
+
+pub type Elf64_Addr = u64;
+pub type Elf64_Half = u16;
+pub type Elf64_Lword = u64;
+pub type Elf64_Off = u64;
+pub type Elf64_Sword = i32;
+pub type Elf64_Sxword = i64;
+pub type Elf64_Word = u32;
+pub type Elf64_Xword = u64;
+
+cfg_if! {
+    if #[cfg(target_pointer_width = "64")] {
+        type Elf_Addr = Elf64_Addr;
+        type Elf_Half = Elf64_Half;
+        type Elf_Phdr = Elf64_Phdr;
+    } else if #[cfg(target_pointer_width = "32")] {
+        type Elf_Addr = Elf32_Addr;
+        type Elf_Half = Elf32_Half;
+        type Elf_Phdr = Elf32_Phdr;
+    }
+}
+
+// link.h
+
 #[cfg_attr(feature = "extra_traits", derive(Debug))]
 pub enum timezone {}
 impl ::Copy for timezone {}
@@ -233,6 +265,43 @@ s! {
         pub piod_addr: *mut ::c_void,
         pub piod_len: ::size_t,
     }
+
+    // elf.h
+
+    pub struct Elf32_Phdr {
+        pub p_type: Elf32_Word,
+        pub p_offset: Elf32_Off,
+        pub p_vaddr: Elf32_Addr,
+        pub p_paddr: Elf32_Addr,
+        pub p_filesz: Elf32_Word,
+        pub p_memsz: Elf32_Word,
+        pub p_flags: Elf32_Word,
+        pub p_align: Elf32_Word,
+    }
+
+    pub struct Elf64_Phdr {
+        pub p_type: Elf64_Word,
+        pub p_flags: Elf64_Word,
+        pub p_offset: Elf64_Off,
+        pub p_vaddr: Elf64_Addr,
+        pub p_paddr: Elf64_Addr,
+        pub p_filesz: Elf64_Xword,
+        pub p_memsz: Elf64_Xword,
+        pub p_align: Elf64_Xword,
+    }
+
+    // link.h
+
+    pub struct dl_phdr_info {
+        pub dlpi_addr: Elf_Addr,
+        pub dlpi_name: *const ::c_char,
+        pub dlpi_phdr: *const Elf_Phdr,
+        pub dlpi_phnum: Elf_Half,
+        pub dlpi_adds: ::c_ulonglong,
+        pub dlpi_subs: ::c_ulonglong,
+        pub dlpi_tls_modid: usize,
+        pub dlpi_tls_data: *mut ::c_void,
+    }
 }
 
 s_no_extra_traits! {
@@ -1514,6 +1583,18 @@ extern "C" {
 
     pub fn ntp_adjtime(buf: *mut timex) -> ::c_int;
     pub fn ntp_gettime(buf: *mut ntptimeval) -> ::c_int;
+
+    // #include <link.h>
+    pub fn dl_iterate_phdr(
+        callback: ::Option<
+            unsafe extern "C" fn(
+                info: *mut dl_phdr_info,
+                size: usize,
+                data: *mut ::c_void,
+            ) -> ::c_int,
+        >,
+        data: *mut ::c_void,
+    ) -> ::c_int;
 }
 
 #[link(name = "rt")]