From: "Paul E. McKenney" <[email protected]>
To: [email protected]
Cc: [email protected], [email protected], [email protected],
"Thomas Weißschuh" <[email protected]>,
"Willy Tarreau" <[email protected]>,
"Paul E . McKenney" <[email protected]>
Subject: [PATCH v2 nolibc 34/53] tools/nolibc: add support for prctl()
Date: Mon, 12 Jun 2023 13:44:55 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <8b757cc0-3719-4e63-a755-9710384137bc@paulmck-laptop>
From: Thomas Weißschuh <[email protected]>
It will be used to disable core dumps from the child spawned to validate
the stack protector functionality.
Signed-off-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Willy Tarreau <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
---
tools/include/nolibc/sys.h | 27 ++++++++++++++++++++
tools/testing/selftests/nolibc/nolibc-test.c | 2 ++
2 files changed, 29 insertions(+)
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index d5792a5de70b..c688b410f9e4 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -22,6 +22,7 @@
#include <linux/fcntl.h> /* for O_* and AT_* */
#include <linux/stat.h> /* for statx() */
#include <linux/reboot.h> /* for LINUX_REBOOT_* */
+#include <linux/prctl.h>
#include "arch.h"
#include "errno.h"
@@ -875,6 +876,32 @@ int open(const char *path, int flags, ...)
}
+/*
+ * int prctl(int option, unsigned long arg2, unsigned long arg3,
+ * unsigned long arg4, unsigned long arg5);
+ */
+
+static __attribute__((unused))
+int sys_prctl(int option, unsigned long arg2, unsigned long arg3,
+ unsigned long arg4, unsigned long arg5)
+{
+ return my_syscall5(__NR_prctl, option, arg2, arg3, arg4, arg5);
+}
+
+static __attribute__((unused))
+int prctl(int option, unsigned long arg2, unsigned long arg3,
+ unsigned long arg4, unsigned long arg5)
+{
+ int ret = sys_prctl(option, arg2, arg3, arg4, arg5);
+
+ if (ret < 0) {
+ SET_ERRNO(-ret);
+ ret = -1;
+ }
+ return ret;
+}
+
+
/*
* int pivot_root(const char *new, const char *old);
*/
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index b50b5a8bcc90..6db788603a34 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -22,6 +22,7 @@
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
+#include <sys/prctl.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/syscall.h>
@@ -580,6 +581,7 @@ int run_syscall(int min, int max)
CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
+ CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
--
2.40.1
next prev parent reply other threads:[~2023-06-12 20:45 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 14:55 [PATCH nolibc 0/15] nolibc updates for v6.5] Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 01/15] tools/nolibc: tests: use volatile to force stack smashing Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 02/15] tools/nolibc: tests: fix build on non-c99 compliant compilers Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 03/15] tools/nolibc: fix build of the test case using glibc Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 04/15] tools/nolibc: add libc-test binary Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 05/15] tools/nolibc: add wrapper for memfd_create Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 06/15] tools/nolibc: implement fd-based FILE streams Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 07/15] tools/nolibc: add testcases for vfprintf Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 08/15] tools/nolibc: Fix build of stdio.h due to header ordering Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 09/15] tools/nolibc: use standard __asm__ statements Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 10/15] tools/nolibc: use __inline__ syntax Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 11/15] tools/nolibc: use C89 comment syntax Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 12/15] tools/nolibc: validate C89 compatibility Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 13/15] tools/nolibc: s390: provide custom implementation for sys_fork Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 14/15] tools/nolibc: add testcase for fork()/waitpid() Paul E. McKenney
2023-05-18 14:55 ` [PATCH v2 nolibc 15/15] tools/nolibc: remove LINUX_REBOOT_ constants Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 0/15] nolibc updates for v6.5] Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 01/53] tools/nolibc: tests: use volatile to force stack smashing Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 02/53] tools/nolibc: tests: fix build on non-c99 compliant compilers Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 03/53] tools/nolibc: fix build of the test case using glibc Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 04/53] tools/nolibc: add libc-test binary Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 05/53] tools/nolibc: add wrapper for memfd_create Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 06/53] tools/nolibc: implement fd-based FILE streams Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 07/53] tools/nolibc: add testcases for vfprintf Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 08/53] tools/nolibc: Fix build of stdio.h due to header ordering Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 09/53] tools/nolibc: use standard __asm__ statements Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 10/53] tools/nolibc: use __inline__ syntax Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 11/53] tools/nolibc: use C89 comment syntax Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 12/53] tools/nolibc: validate C89 compatibility Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 13/53] tools/nolibc: s390: provide custom implementation for sys_fork Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 14/53] tools/nolibc: add testcase for fork()/waitpid() Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 15/53] tools/nolibc: remove LINUX_REBOOT_ constants Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 16/53] tools/nolibc: riscv: Fix up load/store instructions for rv32 Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 17/53] tools/nolibc/unistd: add syscall() Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 18/53] selftests/nolibc: syscall_args: use generic __NR_statx Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 19/53] selftests/nolibc: reduce syscalls during space padding Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 20/53] tools/nolibc: aarch64: add stackprotector support Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 21/53] tools/nolibc: arm: " Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 22/53] tools/nolibc: loongarch: " Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 23/53] tools/nolibc: mips: " Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 24/53] tools/nolibc: riscv: " Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 25/53] tools/nolibc: fix typo pint -> point Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 26/53] tools/nolibc: x86_64: disable stack protector for _start Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 27/53] tools/nolibc: ensure stack protector guard is never zero Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 28/53] tools/nolibc: add test for __stack_chk_guard initialization Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 29/53] tools/nolibc: reformat list of headers to be installed Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 30/53] tools/nolibc: add autodetection for stackprotector support Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 31/53] tools/nolibc: simplify stackprotector compiler flags Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 32/53] tools/nolibc: fix segfaults on compilers without attribute no_stack_protector Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 33/53] tools/nolibc: s390: disable stackprotector in _start Paul E. McKenney
2023-06-12 20:44 ` Paul E. McKenney [this message]
2023-06-12 20:44 ` [PATCH v2 nolibc 35/53] selftests/nolibc: prevent coredumps during test execution Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 36/53] tools/nolibc: support nanoseconds in stat() Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 37/53] selftests/nolibc: print name instead of number for EOVERFLOW Paul E. McKenney
2023-06-12 20:44 ` [PATCH v2 nolibc 38/53] selftests/nolibc: remove the duplicated gettimeofday_bad2 Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 39/53] tools/nolibc: ppoll/ppoll_time64: add a missing argument Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 40/53] selftests/nolibc: test_fork: fix up duplicated print Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 41/53] tools/nolibc: ensure fast64 integer types have 64 bits Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 42/53] selftests/nolibc: remove test gettimeofday_null Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 43/53] selftests/nolibc: allow specify extra arguments for qemu Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 44/53] selftests/nolibc: fix up compile warning with glibc on x86_64 Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 45/53] selftests/nolibc: not include limits.h for nolibc Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 46/53] selftests/nolibc: use INT_MAX instead of __INT_MAX__ Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 47/53] tools/nolibc: arm: add missing my_syscall6 Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 48/53] tools/nolibc: open: fix up compile warning for arm Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 49/53] selftests/nolibc: support two errnos with EXPECT_SYSER2() Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 50/53] selftests/nolibc: remove gettimeofday_bad1/2 completely Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 51/53] selftests/nolibc: add new gettimeofday test cases Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 52/53] selftests/nolibc: also count skipped and failed tests in output Paul E. McKenney
2023-06-12 20:45 ` [PATCH v2 nolibc 53/53] selftests/nolibc: make sure gcc always use little endian on MIPS Paul E. McKenney
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox