glibc/login/programs/utmpdump.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

63 lines
1.9 KiB
C

/* utmpdump - dump utmp-like files.
Copyright (C) 1997-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <utmp.h>
static void
print_entry (struct utmp *up)
{
/* Mixed 32-/64-bit systems may have timeval structs of different sixe
but need struct utmp to be the same size. So in 64-bit up->ut_tv may
not be a timeval but a struct of __int32_t's. This would cause a compile
time warning and a formating error when 32-bit int is passed where
a 64-bit long is expected. So copy up->up_tv to a temporary timeval.
This is 32-/64-bit agnostic and expands the timeval fields to the
expected size as needed. */
struct timeval temp_tv;
temp_tv.tv_sec = up->ut_tv.tv_sec;
temp_tv.tv_usec = up->ut_tv.tv_usec;
printf ("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-16.16s] [%-15.15s]"
" [%ld]\n",
up->ut_type, up->ut_pid, up->ut_id, up->ut_user, up->ut_line,
up->ut_host, 4 + ctime (&temp_tv.tv_sec),
(long int) temp_tv.tv_usec);
}
int
main (int argc, char *argv[])
{
struct utmp *up;
if (argc > 1)
utmpname (argv[1]);
setutent ();
while ((up = getutent ()))
print_entry (up);
endutent ();
return EXIT_SUCCESS;
}