std: use pid_t where appropriate

1 files changed, 7 insertions, 7 deletions

diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 0997f51ef9..d5bab64493 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -464,7 +464,7 @@ pub fn getrandom(buf: [*]u8, count: usize, flags: u32) usize {
     return syscall3(SYS_getrandom, @ptrToInt(buf), count, flags);
 }
 
-pub fn kill(pid: i32, sig: i32) usize {
+pub fn kill(pid: pid_t, sig: i32) usize {
     return syscall2(SYS_kill, @bitCast(usize, @as(isize, pid)), @bitCast(usize, @as(isize, sig)));
 }
 
@@ -488,7 +488,7 @@ pub fn unlinkat(dirfd: i32, path: [*:0]const u8, flags: u32) usize {
     return syscall3(SYS_unlinkat, @bitCast(usize, @as(isize, dirfd)), @ptrToInt(path), flags);
 }
 
-pub fn waitpid(pid: i32, status: *u32, flags: u32) usize {
+pub fn waitpid(pid: pid_t, status: *u32, flags: u32) usize {
     return syscall4(SYS_wait4, @bitCast(usize, @as(isize, pid)), @ptrToInt(status), flags, 0);
 }
 
@@ -665,12 +665,12 @@ pub fn setgroups(size: usize, list: *const u32) usize {
     }
 }
 
-pub fn getpid() i32 {
-    return @bitCast(i32, @truncate(u32, syscall0(SYS_getpid)));
+pub fn getpid() pid_t {
+    return @bitCast(pid_t, @truncate(u32, syscall0(SYS_getpid)));
 }
 
-pub fn gettid() i32 {
-    return @bitCast(i32, @truncate(u32, syscall0(SYS_gettid)));
+pub fn gettid() pid_t {
+    return @bitCast(pid_t, @truncate(u32, syscall0(SYS_gettid)));
 }
 
 pub fn sigprocmask(flags: u32, noalias set: ?*const sigset_t, noalias oldset: ?*sigset_t) usize {
@@ -965,7 +965,7 @@ pub fn sched_yield() usize {
     return syscall0(SYS_sched_yield);
 }
 
-pub fn sched_getaffinity(pid: i32, size: usize, set: *cpu_set_t) usize {
+pub fn sched_getaffinity(pid: pid_t, size: usize, set: *cpu_set_t) usize {
     const rc = syscall3(SYS_sched_getaffinity, @bitCast(usize, @as(isize, pid)), size, @ptrToInt(set));
     if (@bitCast(isize, rc) < 0) return rc;
     if (rc < size) @memset(@ptrCast([*]u8, set) + rc, 0, size - rc);