Linux: add getitimer()/setitimer()

libc-test/build.rs

@@ -3558,6 +3558,9 @@ fn test_linux(target: &str) {
  // https://github.com/rust-lang/libc/issues/1359
  "sighandler_t" => true,
 
+ // musl doesn't define these; instead, it uses a raw int for getitimer/setitimer
+ "__itimer_which_t" if musl => true,
+
  // These cannot be tested when "resolv.h" is included and are tested
  // in the `linux_elf.rs` file.
  "Elf64_Phdr" | "Elf32_Phdr" => true,

libc-test/semver/linux.txt

@@ -3475,6 +3475,7 @@ __c_anonymous_sockaddr_can_j1939
 __c_anonymous_sockaddr_can_tp
 __errno_location
 __exit_status
+__itimer_which_t
 __s16
 __s32
 __u16
@@ -3591,6 +3592,7 @@ getgrnam_r
 getgrouplist
 gethostid
 getifaddrs
+getitimer
 getline
 getmntent
 getnameinfo
@@ -3892,6 +3894,7 @@ setfsuid
 setgrent
 setgroups
 sethostname
+setitimer
 setmntent
 setns
 setpriority

src/unix/linux_like/linux/mod.rs

@@ -73,6 +73,8 @@ missing! {
  pub enum fpos64_t {} // FIXME: fill this out with a struct
 }
 
+pub type __itimer_which_t = ::c_int;
+
 e! {
  pub enum tpacket_versions {
  TPACKET_V1,
@@ -6129,6 +6131,28 @@ extern "C" {
  pub fn ioctl(fd: ::c_int, request: ::Ioctl, ...) -> ::c_int;
 }
 
+cfg_if! {
+ if #[cfg(target_env = "musl")] {
+ extern "C" {
+ pub fn getitimer(which: ::c_int, value: *mut ::itimerval) -> ::c_int;
+ pub fn setitimer(
+ which: ::c_int,
+ new: *const ::itimerval,
+ old: *mut ::itimerval,
+ ) -> ::c_int;
+ }
+ } else {
+ extern "C" {
+ pub fn getitimer(which: ::__itimer_which_t, value: *mut ::itimerval) -> ::c_int;
+ pub fn setitimer(
+ which: ::__itimer_which_t,
+ new: *const ::itimerval,
+ old: *mut ::itimerval,
+ ) -> ::c_int;
+ }
+ }
+}
+
 // LFS64 extensions
 //
 // * musl has 64-bit versions only so aliases the LFS64 symbols to the standard ones