From: Florian Weimer <fweimer@redhat.com>
To: libc-alpha@sourceware.org
Subject: [PATCH v3 1/3] login: Check default sizes of structs utmp, utmpx, lastlog
Date: Wed, 10 Apr 2024 08:45:15 +0200 [thread overview]
Message-ID: <30fd9d14d3006367e02a65027a0b41cdf0ea62ae.1712731247.git.fweimer@redhat.com> (raw)
In-Reply-To: <cover.1712731247.git.fweimer@redhat.com>
The default <utmp-size.h> is for ports with a 64-bit time_t.
Ports with a 32-bit time_t or with __WORDSIZE_TIME64_COMPAT32=1
need to override it.
---
login/Makefile | 2 +-
login/tst-utmp-size.c | 33 +++++++++++++++++++++++++++++++++
sysdeps/arc/utmp-size.h | 3 +++
sysdeps/arm/utmp-size.h | 2 ++
sysdeps/csky/utmp-size.h | 2 ++
sysdeps/generic/utmp-size.h | 23 +++++++++++++++++++++++
sysdeps/hppa/utmp-size.h | 2 ++
sysdeps/m68k/utmp-size.h | 3 +++
sysdeps/microblaze/utmp-size.h | 2 ++
sysdeps/mips/utmp-size.h | 2 ++
sysdeps/nios2/utmp-size.h | 2 ++
sysdeps/or1k/utmp-size.h | 3 +++
sysdeps/powerpc/utmp-size.h | 2 ++
sysdeps/riscv/utmp-size.h | 2 ++
sysdeps/sh/utmp-size.h | 2 ++
sysdeps/sparc/utmp-size.h | 2 ++
sysdeps/x86/utmp-size.h | 2 ++
17 files changed, 88 insertions(+), 1 deletion(-)
create mode 100644 login/tst-utmp-size.c
create mode 100644 sysdeps/arc/utmp-size.h
create mode 100644 sysdeps/arm/utmp-size.h
create mode 100644 sysdeps/csky/utmp-size.h
create mode 100644 sysdeps/generic/utmp-size.h
create mode 100644 sysdeps/hppa/utmp-size.h
create mode 100644 sysdeps/m68k/utmp-size.h
create mode 100644 sysdeps/microblaze/utmp-size.h
create mode 100644 sysdeps/mips/utmp-size.h
create mode 100644 sysdeps/nios2/utmp-size.h
create mode 100644 sysdeps/or1k/utmp-size.h
create mode 100644 sysdeps/powerpc/utmp-size.h
create mode 100644 sysdeps/riscv/utmp-size.h
create mode 100644 sysdeps/sh/utmp-size.h
create mode 100644 sysdeps/sparc/utmp-size.h
create mode 100644 sysdeps/x86/utmp-size.h
diff --git a/login/Makefile b/login/Makefile
index 1e22008a61..b26ac42bfc 100644
--- a/login/Makefile
+++ b/login/Makefile
@@ -44,7 +44,7 @@ subdir-dirs = programs
vpath %.c programs
tests := tst-utmp tst-utmpx tst-grantpt tst-ptsname tst-getlogin tst-updwtmpx \
- tst-pututxline-lockfail tst-pututxline-cache
+ tst-pututxline-lockfail tst-pututxline-cache tst-utmp-size
# Empty compatibility library for old binaries.
extra-libs := libutil
diff --git a/login/tst-utmp-size.c b/login/tst-utmp-size.c
new file mode 100644
index 0000000000..1b7f7ff042
--- /dev/null
+++ b/login/tst-utmp-size.c
@@ -0,0 +1,33 @@
+/* Check expected sizes of struct utmp, struct utmpx, struct lastlog.
+ Copyright (C) 2024 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 <utmp.h>
+#include <utmpx.h>
+#include <utmp-size.h>
+
+static int
+do_test (void)
+{
+ _Static_assert (sizeof (struct utmp) == UTMP_SIZE, "struct utmp size");
+ _Static_assert (sizeof (struct utmpx) == UTMP_SIZE, "struct utmpx size");
+ _Static_assert (sizeof (struct lastlog) == LASTLOG_SIZE,
+ "struct lastlog size");
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/arc/utmp-size.h b/sysdeps/arc/utmp-size.h
new file mode 100644
index 0000000000..a247fcd3da
--- /dev/null
+++ b/sysdeps/arc/utmp-size.h
@@ -0,0 +1,3 @@
+/* arc has less padding than other architectures with 64-bit time_t. */
+#define UTMP_SIZE 392
+#define LASTLOG_SIZE 296
diff --git a/sysdeps/arm/utmp-size.h b/sysdeps/arm/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/arm/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/csky/utmp-size.h b/sysdeps/csky/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/csky/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/generic/utmp-size.h b/sysdeps/generic/utmp-size.h
new file mode 100644
index 0000000000..89dbe878b0
--- /dev/null
+++ b/sysdeps/generic/utmp-size.h
@@ -0,0 +1,23 @@
+/* Expected sizes of utmp-related structures stored in files. 64-bit version.
+ Copyright (C) 2024 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/>. */
+
+/* Expected size, in bytes, of struct utmp and struct utmpx. */
+#define UTMP_SIZE 400
+
+/* Expected size, in bytes, of struct lastlog. */
+#define LASTLOG_SIZE 296
diff --git a/sysdeps/hppa/utmp-size.h b/sysdeps/hppa/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/hppa/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/m68k/utmp-size.h b/sysdeps/m68k/utmp-size.h
new file mode 100644
index 0000000000..5946685819
--- /dev/null
+++ b/sysdeps/m68k/utmp-size.h
@@ -0,0 +1,3 @@
+/* m68k has 2-byte alignment. */
+#define UTMP_SIZE 382
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/microblaze/utmp-size.h b/sysdeps/microblaze/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/microblaze/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/mips/utmp-size.h b/sysdeps/mips/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/mips/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/nios2/utmp-size.h b/sysdeps/nios2/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/nios2/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/or1k/utmp-size.h b/sysdeps/or1k/utmp-size.h
new file mode 100644
index 0000000000..6b3653aa4d
--- /dev/null
+++ b/sysdeps/or1k/utmp-size.h
@@ -0,0 +1,3 @@
+/* or1k has less padding than other architectures with 64-bit time_t. */
+#define UTMP_SIZE 392
+#define LASTLOG_SIZE 296
diff --git a/sysdeps/powerpc/utmp-size.h b/sysdeps/powerpc/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/powerpc/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/riscv/utmp-size.h b/sysdeps/riscv/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/riscv/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/sh/utmp-size.h b/sysdeps/sh/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/sh/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/sparc/utmp-size.h b/sysdeps/sparc/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/sparc/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
diff --git a/sysdeps/x86/utmp-size.h b/sysdeps/x86/utmp-size.h
new file mode 100644
index 0000000000..8f21ebe1b6
--- /dev/null
+++ b/sysdeps/x86/utmp-size.h
@@ -0,0 +1,2 @@
+#define UTMP_SIZE 384
+#define LASTLOG_SIZE 292
--
2.44.0
next prev parent reply other threads:[~2024-04-10 6:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-10 6:45 [PATCH v3 0/3] login: Use unsigned 32-bit types for seconds-since-epoch Florian Weimer
2024-04-10 6:45 ` Florian Weimer [this message]
2024-04-12 16:14 ` [PATCH v3 1/3] login: Check default sizes of structs utmp, utmpx, lastlog Adhemerval Zanella Netto
2024-04-10 6:45 ` [PATCH v3 2/3] login: structs utmp, utmpx, lastlog _TIME_BITS independence (bug 30701) Florian Weimer
2024-04-12 16:15 ` Adhemerval Zanella Netto
2024-04-12 21:23 ` Paul Eggert
2024-04-15 9:28 ` Florian Weimer
2024-04-17 21:14 ` Paul Eggert
2024-04-10 6:45 ` [PATCH v3 3/3] login: Use unsigned 32-bit types for seconds-since-epoch Florian Weimer
2024-04-12 16:19 ` Adhemerval Zanella Netto
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