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Userland: Show idle times in "w" output

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The idle time is based on the mtime of the session's TTY :^)
This commit is contained in:
Andreas Kling 2020-09-06 18:58:58 +02:00
parent 4527d9852a
commit abce7e7ca2
Notes: sideshowbarker 2024-07-19 02:52:54 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/abce7e7ca22
1 changed files with 25 additions and 4 deletions
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29
Userland/w.cpp
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@ -3,6 +3,8 @@
#include <LibCore/File.h>
#include <pwd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <time.h>
int main()
{
@ -11,6 +13,11 @@ int main()
return 1;
}
if (unveil("/dev", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil("/etc/passwd", "r") < 0) {
perror("unveil");
return 1;
@ -35,8 +42,10 @@ int main()
return 1;
}
printf("\033[1m%-10s %-12s %-16s %-16s\033[0m\n",
"USER", "TTY", "FROM", "LOGIN@");
auto now = time(nullptr);
printf("\033[1m%-10s %-12s %-16s %-20s %-6s\033[0m\n",
"USER", "TTY", "FROM", "LOGIN@", "IDLE");
json.value().as_object().for_each_member([&](auto& tty, auto& value) {
const JsonObject& entry = value.as_object();
auto uid = entry.get("uid").to_u32();
@ -52,11 +61,23 @@ int main()
else
username = String::number(uid);
printf("%-10s %-12s %-16s %-16s\n",
StringBuilder builder;
String idle_string = "n/a";
struct stat st;
if (stat(tty.characters(), &st) == 0) {
auto idle_time = now - st.st_mtime;
if (idle_time >= 0) {
builder.appendf("%d sec", idle_time);
idle_string = builder.to_string();
}
}
printf("%-10s %-12s %-16s %-20s %-6s\n",
username.characters(),
tty.characters(),
from.characters(),
login_at.characters());
login_at.characters(),
idle_string.characters());
});
return 0;
}