glibc/support
Siddhesh Poyarekar 700264179c support: Add capability to fork an sgid child
Add a new function support_capture_subprogram_self_sgid that spawns an
sgid child of the running program with its own image and returns the
exit code of the child process.  This functionality is used by at
least three tests in the testsuite at the moment, so it makes sense to
consolidate.

There is also a new function support_subprogram_wait which should
provide simple system() like functionality that does not set up file
actions.  This is useful in cases where only the return code of the
spawned subprocess is interesting.

This patch also ports tst-secure-getenv to this new function.  A
subsequent patch will port other tests.  This also brings an important
change to tst-secure-getenv behaviour.  Now instead of succeeding, the
test fails as UNSUPPORTED if it is unable to spawn a setgid child,
which is how it should have been in the first place.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

(cherry picked from commit 716a3bdc41)
2021-04-14 10:48:13 +05:30
..
blob_repeat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
blob_repeat.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
capture_subprocess.h support: Add capability to fork an sgid child 2021-04-14 10:48:13 +05:30
check_addrinfo.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check_dns_packet.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check_hostent.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check_netent.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check_nss.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
check.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
delayed_exit.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
descriptors.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
echo-container.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
format_nss.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
ignore_stderr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
links-dso-program-c.c nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696] 2019-07-10 14:51:18 -04:00
links-dso-program.cc nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696] 2019-07-10 14:51:18 -04:00
Makefile Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
namespace.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
next_to_fault.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
next_to_fault.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
oom_error.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
README support: Add timespec.h 2019-05-09 14:33:53 -03:00
README-testing.c support: Introduce new subdirectory for test infrastructure 2016-12-09 08:18:27 +01:00
resolv_test.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
resolv_test.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
run_diff.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
set_fortify_handler.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
shell-container.c support/shell-container.c: Add builtin kill 2020-03-25 10:01:28 -03:00
subprocess.h support: Add capability to fork an sgid child 2021-04-14 10:48:13 +05:30
support_become_root.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
support_can_chroot.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
support_capture_subprocess_check.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
support_capture_subprocess.c support: Add capability to fork an sgid child 2021-04-14 10:48:13 +05:30
support_chroot.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
support_copy_file_range.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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support_subprocess.c support: Add capability to fork an sgid child 2021-04-14 10:48:13 +05:30
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tty.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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This subdirectory contains infrastructure which is not put into
installed libraries, but may be linked into programs (installed or
not) and tests.

# Error-checking wrappers

These wrappers test for error return codes an terminate the process on
error.  They are declared in these header files:

* support.h
* xsignal.h
* xthread.h
* xtime.h

In general, new wrappers should be added to support.h if possible.
However, support.h must remain fully compatible with C90 and therefore
cannot include headers which use identifers not reserved in C90.  If
the wrappers need additional types, additional headers such as
signal.h need to be introduced.

# Test framework

The test framework provides a main program for tests, including a
timeout for hanging tests.  See README-testing.c for a minimal
example, and test-driver.c for details how to use it.  The following
header files provide related declarations:

* check.h
* temp_file.h
* test-driver.h

For tests that make use of struct timespec, the following header files
contain additional macros and helper functions:

* timespec.h