hare

commit 25c165ad428a6eb5d2942c782eda8b128a8f5cff
parent 4254f1ce78362b96d08bcbbba77e0647380b62e6
Author: Drew DeVault <sir@cmpwn.com>
Date:   Sat,  6 Mar 2021 12:15:51 -0500

os: add uname functions

Diffstat:
M
os/+linux/environ.ha
 | 
43
+++++++++++++++++++++++++++++++++++++++++++
M
rt/+linux/syscalls.ha
 | 
5
+++++
M
rt/+linux/types.ha
 | 
9
+++++++++

3 files changed, 57 insertions(+), 0 deletions(-)
diff --git a/os/+linux/environ.ha b/os/+linux/environ.ha
@@ -60,3 +60,46 @@ export fn getenvs() []str = {
 	};
 	return envp;
 };
+
+let uts: rt::utsname = rt::utsname { ... };
+let uts_valid: bool = false;
+
+// Returns the host kernel name
+export fn sysname() const str = {
+	if (!uts_valid) {
+		rt::uname(&uts) as void;
+	};
+	return strings::from_c(&uts.sysname: *const char);
+};
+
+// Returns the host system hostname
+export fn hostname() const str = {
+	if (!uts_valid) {
+		rt::uname(&uts) as void;
+	};
+	return strings::from_c(&uts.nodename: *const char);
+};
+
+// Returns the host kernel version
+export fn release() const str = {
+	if (!uts_valid) {
+		rt::uname(&uts) as void;
+	};
+	return strings::from_c(&uts.release: *const char);
+};
+
+// Returns the host operating system version
+export fn version() const str = {
+	if (!uts_valid) {
+		rt::uname(&uts) as void;
+	};
+	return strings::from_c(&uts.version: *const char);
+};
+
+// Returns the host CPU architecture
+export fn machine() const str = {
+	if (!uts_valid) {
+		rt::uname(&uts) as void;
+	};
+	return strings::from_c(&uts.machine: *const char);
+};
diff --git a/rt/+linux/syscalls.ha b/rt/+linux/syscalls.ha
@@ -248,3 +248,8 @@ export fn clock_gettime(clock_id: int, tp: *timespec) (void | errno) = {
 		clock_id: u64, tp: uintptr: u64))?;
 	return;
 };
+
+export fn uname(uts: *utsname) (void | errno) = {
+	wrap_return(syscall1(SYS_uname, uts: uintptr: u64))?;
+	return;
+};
diff --git a/rt/+linux/types.ha b/rt/+linux/types.ha
@@ -295,3 +295,12 @@ export type rusage = struct {
 	ru_nivcsw: u64,
 	__reserved: [16]u64,
 };
+
+export type utsname = struct {
+	sysname:    [65]char,
+	nodename:   [65]char,
+	release:    [65]char,
+	version:    [65]char,
+	machine:    [65]char,
+	domainname: [65]char,
+};