Auto merge of #2796 - devnexen:dfbsd_kvm_update, r=Amanieu

dragonflybsd adding subset of kvm api

Author: bors

libc-test/build.rs

@@ -1208,6 +1208,7 @@ fn test_dragonflybsd(target: &str) {
         "glob.h",
         "grp.h",
         "ifaddrs.h",
+        "kvm.h",
         "langinfo.h",
         "limits.h",
         "link.h",
@@ -1275,6 +1276,7 @@ fn test_dragonflybsd(target: &str) {
         "utime.h",
         "utmpx.h",
         "vfs/ufs/quota.h",
+        "vm/vm_map.h",
         "wchar.h",
         "iconv.h",
     }
@@ -1328,6 +1330,9 @@ fn test_dragonflybsd(target: &str) {
     });
 
     cfg.skip_struct(move |ty| {
+        if ty.starts_with("__c_anonymous_") {
+            return true;
+        }
         match ty {
             // FIXME: These are tested as part of the linux_fcntl tests since
             // there are header conflicts when including them with all the other

libc-test/semver/dragonfly.txt

@@ -1317,6 +1317,16 @@ kinfo_cputime
 kinfo_file
 kinfo_lwp
 kinfo_proc
+kvm_close
+kvm_getloadavg
+kvm_getprocs
+kvm_open
+kvm_openfiles
+kvm_read
+kvm_t
+kvm_vm_map_entry_first
+kvm_vm_map_entry_next
+kvm_write
 kqueue
 labs
 lastlog
@@ -1512,6 +1522,7 @@ utmpxname
 utrace
 uuid
 uuid_t
+vm_map_entry_t
 vm_size_t
 wait4
 waitid

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

@@ -34,6 +34,15 @@ pub type pthread_spinlock_t = ::uintptr_t;
 
 pub type segsz_t = usize;
 
+pub type vm_prot_t = u8;
+pub type vm_maptype_t = u8;
+pub type vm_inherit_t = i8;
+pub type vm_subsys_t = ::c_int;
+pub type vm_eflags_t = ::c_uint;
+
+pub type vm_map_t = *mut __c_anonymous_vm_map;
+pub type vm_map_entry_t = *mut vm_map_entry;
+
 #[cfg_attr(feature = "extra_traits", derive(Debug))]
 pub enum sem {}
 impl ::Copy for sem {}
@@ -336,6 +345,21 @@ s! {
         kp_spare: [::c_int; 2],
     }
 
+    pub struct __c_anonymous_vm_map {
+        _priv: [::uintptr_t; 36],
+    }
+
+    pub struct vm_map_entry {
+        _priv: [::uintptr_t; 15],
+        pub eflags: ::vm_eflags_t,
+        pub maptype: ::vm_maptype_t,
+        pub protection: ::vm_prot_t,
+        pub max_protection: ::vm_prot_t,
+        pub inheritance: ::vm_inherit_t,
+        pub wired_count: ::c_int,
+        pub id: ::vm_subsys_t,
+    }
+
     pub struct cpuctl_msr_args_t {
         pub msr: ::c_int,
         pub data: u64,
@@ -1613,6 +1637,20 @@ extern "C" {
     pub fn freezero(ptr: *mut ::c_void, size: ::size_t);
 }
 
+#[link(name = "kvm")]
+extern "C" {
+    pub fn kvm_vm_map_entry_first(
+        kvm: *mut ::kvm_t,
+        map: vm_map_t,
+        entry: vm_map_entry_t,
+    ) -> vm_map_entry_t;
+    pub fn kvm_vm_map_entry_next(
+        kvm: *mut ::kvm_t,
+        map: vm_map_entry_t,
+        entry: vm_map_entry_t,
+    ) -> vm_map_entry_t;
+}
+
 cfg_if! {
     if #[cfg(libc_thread_local)] {
         mod errno;

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

@@ -44,10 +44,6 @@ pub type fhandle_t = fhandle;
 pub type au_id_t = ::uid_t;
 pub type au_asid_t = ::pid_t;
 
-// It's an alias over "struct __kvm_t". However, its fields aren't supposed to be used directly,
-// making the type definition system dependent. Better not bind it exactly.
-pub type kvm_t = ::c_void;
-
 #[cfg_attr(feature = "extra_traits", derive(Debug, Hash, PartialEq, Eq))]
 #[repr(u32)]
 pub enum devstat_support_flags {
@@ -4272,71 +4268,39 @@ extern "C" {
 
 #[link(name = "kvm")]
 extern "C" {
-    pub fn kvm_open(
-        execfile: *const ::c_char,
-        corefile: *const ::c_char,
-        swapfile: *const ::c_char,
-        flags: ::c_int,
-        errstr: *const ::c_char,
-    ) -> *mut kvm_t;
-    pub fn kvm_close(kd: *mut kvm_t) -> ::c_int;
-    pub fn kvm_dpcpu_setcpu(kd: *mut kvm_t, cpu: ::c_uint) -> ::c_int;
-    pub fn kvm_getargv(kd: *mut kvm_t, p: *const kinfo_proc, nchr: ::c_int) -> *mut *mut ::c_char;
-    pub fn kvm_getcptime(kd: *mut kvm_t, cp_time: *mut ::c_long) -> ::c_int;
-    pub fn kvm_getenvv(kd: *mut kvm_t, p: *const kinfo_proc, nchr: ::c_int) -> *mut *mut ::c_char;
-    pub fn kvm_geterr(kd: *mut kvm_t) -> *mut ::c_char;
-    pub fn kvm_getloadavg(kd: *mut kvm_t, loadavg: *mut ::c_double, nelem: ::c_int) -> ::c_int;
-    pub fn kvm_getmaxcpu(kd: *mut kvm_t) -> ::c_int;
-    pub fn kvm_getncpus(kd: *mut kvm_t) -> ::c_int;
-    pub fn kvm_getpcpu(kd: *mut kvm_t, cpu: ::c_int) -> *mut ::c_void;
-    pub fn kvm_counter_u64_fetch(kd: *mut kvm_t, base: ::c_ulong) -> u64;
-    pub fn kvm_getprocs(
-        kd: *mut kvm_t,
-        op: ::c_int,
-        arg: ::c_int,
-        cnt: *mut ::c_int,
-    ) -> *mut kinfo_proc;
+    pub fn kvm_dpcpu_setcpu(kd: *mut ::kvm_t, cpu: ::c_uint) -> ::c_int;
+    pub fn kvm_getargv(kd: *mut ::kvm_t, p: *const kinfo_proc, nchr: ::c_int)
+        -> *mut *mut ::c_char;
+    pub fn kvm_getcptime(kd: *mut ::kvm_t, cp_time: *mut ::c_long) -> ::c_int;
+    pub fn kvm_getenvv(kd: *mut ::kvm_t, p: *const kinfo_proc, nchr: ::c_int)
+        -> *mut *mut ::c_char;
+    pub fn kvm_geterr(kd: *mut ::kvm_t) -> *mut ::c_char;
+    pub fn kvm_getmaxcpu(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn kvm_getncpus(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn kvm_getpcpu(kd: *mut ::kvm_t, cpu: ::c_int) -> *mut ::c_void;
+    pub fn kvm_counter_u64_fetch(kd: *mut ::kvm_t, base: ::c_ulong) -> u64;
     pub fn kvm_getswapinfo(
-        kd: *mut kvm_t,
+        kd: *mut ::kvm_t,
         info: *mut kvm_swap,
         maxswap: ::c_int,
         flags: ::c_int,
     ) -> ::c_int;
-    pub fn kvm_native(kd: *mut kvm_t) -> ::c_int;
-    pub fn kvm_nlist(kd: *mut kvm_t, nl: *mut nlist) -> ::c_int;
-    pub fn kvm_nlist2(kd: *mut kvm_t, nl: *mut kvm_nlist) -> ::c_int;
-    pub fn kvm_openfiles(
-        execfile: *const ::c_char,
-        corefile: *const ::c_char,
-        swapfile: *const ::c_char,
-        flags: ::c_int,
-        errbuf: *mut ::c_char,
-    ) -> *mut kvm_t;
-    pub fn kvm_read(
-        kd: *mut kvm_t,
-        addr: ::c_ulong,
-        buf: *mut ::c_void,
-        nbytes: ::size_t,
-    ) -> ::ssize_t;
+    pub fn kvm_native(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn kvm_nlist(kd: *mut ::kvm_t, nl: *mut nlist) -> ::c_int;
+    pub fn kvm_nlist2(kd: *mut ::kvm_t, nl: *mut kvm_nlist) -> ::c_int;
     pub fn kvm_read_zpcpu(
-        kd: *mut kvm_t,
+        kd: *mut ::kvm_t,
         base: ::c_ulong,
         buf: *mut ::c_void,
         size: ::size_t,
         cpu: ::c_int,
     ) -> ::ssize_t;
     pub fn kvm_read2(
-        kd: *mut kvm_t,
+        kd: *mut ::kvm_t,
         addr: kvaddr_t,
         buf: *mut ::c_void,
         nbytes: ::size_t,
     ) -> ::ssize_t;
-    pub fn kvm_write(
-        kd: *mut kvm_t,
-        addr: ::c_ulong,
-        buf: *const ::c_void,
-        nbytes: ::size_t,
-    ) -> ::ssize_t;
 }
 
 #[link(name = "util")]
@@ -4486,10 +4450,10 @@ extern "C" {
 
 #[link(name = "devstat")]
 extern "C" {
-    pub fn devstat_getnumdevs(kd: *mut kvm_t) -> ::c_int;
-    pub fn devstat_getgeneration(kd: *mut kvm_t) -> ::c_long;
-    pub fn devstat_getversion(kd: *mut kvm_t) -> ::c_int;
-    pub fn devstat_checkversion(kd: *mut kvm_t) -> ::c_int;
+    pub fn devstat_getnumdevs(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn devstat_getgeneration(kd: *mut ::kvm_t) -> ::c_long;
+    pub fn devstat_getversion(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn devstat_checkversion(kd: *mut ::kvm_t) -> ::c_int;
     pub fn devstat_selectdevs(
         dev_select: *mut *mut device_selection,
         num_selected: *mut ::c_int,

src/unix/bsd/freebsdlike/mod.rs

@@ -35,6 +35,10 @@ pub type Elf64_Xword = u64;
 
 pub type iconv_t = *mut ::c_void;
 
+// It's an alias over "struct __kvm_t". However, its fields aren't supposed to be used directly,
+// making the type definition system dependent. Better not bind it exactly.
+pub type kvm_t = ::c_void;
+
 cfg_if! {
     if #[cfg(target_pointer_width = "64")] {
         type Elf_Addr = Elf64_Addr;
@@ -1790,6 +1794,44 @@ extern "C" {
     ) -> ::c_int;
 }
 
+#[link(name = "kvm")]
+extern "C" {
+    pub fn kvm_open(
+        execfile: *const ::c_char,
+        corefile: *const ::c_char,
+        swapfile: *const ::c_char,
+        flags: ::c_int,
+        errstr: *const ::c_char,
+    ) -> *mut ::kvm_t;
+    pub fn kvm_close(kd: *mut ::kvm_t) -> ::c_int;
+    pub fn kvm_getprocs(
+        kd: *mut ::kvm_t,
+        op: ::c_int,
+        arg: ::c_int,
+        cnt: *mut ::c_int,
+    ) -> *mut ::kinfo_proc;
+    pub fn kvm_getloadavg(kd: *mut kvm_t, loadavg: *mut ::c_double, nelem: ::c_int) -> ::c_int;
+    pub fn kvm_openfiles(
+        execfile: *const ::c_char,
+        corefile: *const ::c_char,
+        swapfile: *const ::c_char,
+        flags: ::c_int,
+        errbuf: *mut ::c_char,
+    ) -> *mut ::kvm_t;
+    pub fn kvm_read(
+        kd: *mut ::kvm_t,
+        addr: ::c_ulong,
+        buf: *mut ::c_void,
+        nbytes: ::size_t,
+    ) -> ::ssize_t;
+    pub fn kvm_write(
+        kd: *mut ::kvm_t,
+        addr: ::c_ulong,
+        buf: *const ::c_void,
+        nbytes: ::size_t,
+    ) -> ::ssize_t;
+}
+
 cfg_if! {
     if #[cfg(target_os = "freebsd")] {
         mod freebsd;