ubase

suckless linux base utils
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commit d0145aaf1f156606ce1eb1ba32a5e432cd55888a
parent ae8ca1598bd54db8eea053c04d2b11c294fe0afa
Author: sin <sin@2f30.org>
Date:   Tue Jul  1 15:42:31 +0100

login: Write utmp entry

Diffstat:
login.c | 23+++++++++++++++++++++++
1 file changed, 23 insertions(+), 0 deletions(-)
diff --git a/login.c b/login.c @@ -8,7 +8,9 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <time.h> #include <unistd.h> +#include <utmp.h> #include "config.h" #include "passwd.h" @@ -26,7 +28,10 @@ int main(int argc, char *argv[]) { struct passwd *pw; + struct utmp usr; + FILE *fp; char *pass; + char *tty; uid_t uid; gid_t gid; int pflag = 0; @@ -71,6 +76,24 @@ main(int argc, char *argv[]) if (setuid(uid) < 0) eprintf("setuid:"); + /* Write utmp entry */ + memset(&usr, 0, sizeof(usr)); + + tty = ttyname(STDIN_FILENO); + if (!tty) + tty = "?"; + usr.ut_type = USER_PROCESS; + usr.ut_pid = getpid(); + strlcpy(usr.ut_user, argv[0], sizeof(usr.ut_user)); + strlcpy(usr.ut_line, tty, sizeof(usr.ut_line)); + usr.ut_tv.tv_sec = time(NULL); + + fp = fopen("/var/run/utmp", "a"); + if (!fp) + weprintf("fopen %s:", "/var/run/utmp"); + fwrite(&usr, sizeof(usr), 1, fp); + fclose(fp); + return dologin(pw, pflag); }