Adhemerval Zanella 882d6e17bc posix: Add posix_spawn_file_actions_addclosefrom_np ... This patch adds a way to close a range of file descriptors on posix_spawn as a new file action. The API is similar to the one provided by Solaris 11 [1], where the file action causes the all open file descriptors greater than or equal to input on to be closed when the new process is spawned. The function posix_spawn_file_actions_addclosefrom_np is safe to be implemented by iterating over /proc/self/fd, since the Linux spawni.c helper process does not use CLONE_FILES, so its has own file descriptor table and any failure (in /proc operation) aborts the process creation and returns an error to the caller. I am aware that this file action might be redundant to the current approach of POSIX in promoting O_CLOEXEC in more interfaces. However O_CLOEXEC is still not the default and for some specific usages, the caller needs to close all possible file descriptors to avoid them leaking. Some examples are CPython (discussed in BZ#10353) and OpenJDK jspawnhelper [2] (where OpenJDK spawns a helper process to exactly closes all file descriptors). Most likely any environment which calls functions that might open file descriptor under the hood and aim to use posix_spawn might face the same requirement. Checked on x86_64-linux-gnu and i686-linux-gnu on kernel 5.11 and 4.15. [1] https://docs.oracle.com/cd/E36784_01/html/E36874/posix-spawn-file-actions-addclosefrom-np-3c.html [2] https://github.com/openjdk/jdk/blob/master/src/java.base/unix/native/libjava/childproc.c#L82		2021-07-08 14:08:15 -03:00
..
arpa	inet: Add hidden prototype for __inet_network	2021-07-07 18:33:52 +02:00
bits	linux: Add close_range	2021-07-08 14:08:13 -03:00
gnu	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
net
netinet	nss_files: Consolidate line parse declarations in <nss_files.h>	2020-07-21 07:33:20 +02:00
programs	Enable support for GCC 11 -Wmismatched-dealloc.	2021-05-16 15:21:18 -06:00
protocols
rpc	Handle out-of-memory case in svc_tcp.c/svc_unix.c:rendezvous_request.	2020-12-10 11:11:20 +01:00
rpcsvc	Remove --enable-obsolete-nsl configure flag	2020-07-08 17:25:57 +02:00
sys	linux: Only use 64-bit syscall if required for select	2021-06-22 12:09:52 -03:00
aio.h	Linux: Move aio_suspend, aio_suspend64, __aio_suspend_time64 to libc	2021-06-25 11:55:27 +02:00
aliases.h	Remove --enable-obsolete-nsl configure flag	2020-07-08 17:25:57 +02:00
alloc_buffer.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
alloca.h	Remove macros extend_alloca, extend_alloca_account [BZ #18023]	2018-06-27 19:20:37 +02:00
allocate_once.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ar.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
argp-fmtstream.h
argp.h	ldbl-opt: Add argp_error and argp_failure (bug 23983)	2019-03-01 15:21:32 -03:00
argz.h	Use libc_hidden_* for argz_next, __argz_next (bug 15105).	2018-02-15 21:00:02 +00:00
array_length.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
assert.h
atomic.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
byteswap.h
complex.h
cpio.h
crypt.h
ctype.h	Use libc_hidden_* for tolower, toupper (bug 15105).	2018-02-23 13:54:53 +00:00
des.h
dirent.h	Use 64 bit time_t stat internally	2021-06-22 12:09:52 -03:00
dlfcn.h	elf: Clean up GLIBC_PRIVATE exports of internal libdl symbols	2021-07-07 08:41:24 +02:00
dso_handle.h
elf.h	elf: Refuse to dlopen PIE objects [BZ #24323]	2019-06-18 16:42:10 +02:00
endian.h
envz.h
err.h	ldbl-128ibm-compat: PLT redirects for using ldbl redirects internally	2020-03-25 14:34:23 -05:00
errno.h	Remove tls.h inclusion from internal errno.h	2020-11-13 12:59:19 -03:00
error.h	ldbl-opt: Add error and error_at_line (bug 23984)	2019-03-01 15:26:36 -03:00
execinfo.h
fcntl.h	Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251)	2018-06-26 13:22:53 -03:00
features-time64.h	y2038: Add support for 64-bit time on legacy ABIs	2021-06-15 10:42:11 -03:00
features.h	y2038: Add support for 64-bit time on legacy ABIs	2021-06-15 10:42:11 -03:00
fenv.h	Move fenv.h soft-float inlines from fenv_private.h to include/fenv.h.	2018-09-04 19:52:06 +00:00
file_change_detection.h	Use 64 bit time_t stat internally	2021-06-22 12:09:52 -03:00
filename.h	Import filename.h from gnulib	2021-01-05 11:33:16 -03:00
float.h	Make totalorder and totalordermag functions take pointer arguments.	2019-08-15 15:18:34 +00:00
fmtmsg.h
fnmatch.h
fpu_control.h
fstab.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
fts.h	io: Add fts64 with 64-bit time_t support	2021-06-15 10:42:11 -03:00
ftw.h	io: Add ftw64 with 64-bit time_t support	2021-06-15 10:42:11 -03:00
gconv.h
getopt_int.h
getopt.h
glob.h	Fix extra PLT reference in libc.so due to __glob64_time64 if build with gcc 7.5 on 32bit.	2021-07-01 16:46:59 +02:00
gmp.h
gnu-versions.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
grp-merge.h
grp.h	nss_files: Consolidate line parse declarations in <nss_files.h>	2020-07-21 07:33:20 +02:00
gshadow.h	nss_files: Consolidate line parse declarations in <nss_files.h>	2020-07-21 07:33:20 +02:00
iconv.h
idx.h	Import idx.h from gnulib	2021-01-05 11:33:16 -03:00
ifaddrs.h
ifreq.h
ifunc-impl-list.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
inline-hashtab.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
intprops.h	Sync intprops.h with gnulib	2021-01-04 08:42:04 -03:00
inttypes.h	Make strtoimax, strtoumax, wcstoimax, wcstoumax into aliases	2020-12-08 18:15:27 +00:00
langinfo.h
lastlog.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
libc-diag.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-internal.h	nptl: Move pthread_create, thrd_create into libc	2021-05-21 22:35:00 +02:00
libc-pointer-arith.h	Add cast_to_pointer to cast an integer to void * pointer	2021-05-22 05:09:15 -07:00
libc-symbols.h	nss_files: Move into libc	2021-07-07 18:33:52 +02:00
libgen.h
libintl.h	Document the internal _ and N_ macros	2020-05-06 17:35:40 +02:00
limits.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
link.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
list_t.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
list.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
locale.h
loop_unroll.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
malloc.h	malloc: Move MTAG_MMAP_FLAGS definition	2021-03-26 11:03:06 +00:00
math-narrow-eval.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math.h	math: redirect roundeven function	2021-06-27 07:56:57 -07:00
mcheck.h
memory.h
mntent.h
monetary.h	Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI	2020-04-30 08:52:08 -05:00
mqueue.h	Linux: Move mq_send, mq_timedsend, __mq_timedsend_time64 to libc	2021-06-25 12:21:12 +02:00
netdb.h	nss_files: Move into libc	2021-07-07 18:33:52 +02:00
netgroup.h
nl_types.h
nss_files.h	nss: Access nss_files through direct references	2021-07-07 18:33:52 +02:00
nss.h	nss: Export nscd hash function as __nss_hash [BZ #22459]	2017-11-23 14:08:11 +01:00
nsswitch.h
obstack.h
plural-exp.h
poll.h
printf.h	Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI	2020-04-30 08:52:08 -05:00
pthread.h	Linux: Move mq_notify from librt to libc	2021-06-25 12:20:47 +02:00
pty.h	login: Move libutil into libc	2021-06-30 08:43:37 +02:00
pwd.h	nss_files: Consolidate line parse declarations in <nss_files.h>	2020-07-21 07:33:20 +02:00
random-bits.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
re_comp.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
regex.h
regexp.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
register-atfork.h	posix: Consolidate register-atfork	2021-03-12 10:19:22 -03:00
resolv.h	Obsolete p_secstodate.	2017-11-22 22:21:10 +00:00
rounding-mode.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rtld-malloc.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sched.h	Add hidden prototypes for __sched_getparam, __sched_getscheduler	2020-02-20 08:57:01 +01:00
scratch_buffer.h	malloc: Add scratch_buffer_dupfree	2021-01-05 11:33:16 -03:00
search.h	misc: Add twalk_r function	2019-05-02 11:42:51 +02:00
set-hooks.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setjmp.h	nptl: Move __pthread_unwind_next into libc	2021-04-21 19:49:50 +02:00
sgtty.h
shadow.h	nss_files: Consolidate line parse declarations in <nss_files.h>	2020-07-21 07:33:20 +02:00
shlib-compat.h	Add OTHER_SHLIB_COMPAT	2021-03-26 13:36:16 -03:00
shm-directory.h	nptl: Move sem_close, sem_open into libc	2021-05-05 17:19:38 +02:00
signal.h	hurd: keep only required PLTs in ld.so	2020-11-11 02:36:22 +01:00
spawn.h	posix: Use posix_spawn for wordexp	2019-10-09 17:48:41 -03:00
stab.h
stackinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stap-probe.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stdc-predef.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stdint.h	Move inttypes.h and stdint.h to stdlib.	2019-03-13 09:42:09 -04:00
stdio_ext.h
stdio.h	libio: Replace internal _IO_getdelim symbol with __getdelim	2021-07-07 18:33:52 +02:00
stdlib.h	login: Hidden prototypes for _getpt, __ptsname_r, grantpt, unlockpt	2021-06-30 07:28:12 +02:00
string.h	string: Enable __FORTIFY_LEVEL=3	2020-12-31 16:55:21 +05:30
strings.h
struct___timeb64.h	time: Add 64-bit time_t support for ftime	2020-10-27 09:54:50 -03:00
struct___timespec64.h	y2038: include: Move struct __timespec64 definition to a separate file	2020-04-06 23:05:11 +02:00
struct___timeval64.h	y2038: include: Move struct __timeval64 definition to a separate file	2020-05-05 19:36:25 +02:00
stubs-prologue.h
syscall.h
sysexits.h
syslog.h
tar.h
termios.h
tgmath.h
time.h	Linux: Move timer_settime, __timer_settime64 from librt to libc	2021-06-28 09:51:01 +02:00
ttyent.h
uchar.h
ucontext.h
ulimit.h
unistd.h	posix: Add posix_spawn_file_actions_addclosefrom_np	2021-07-08 14:08:15 -03:00
utime.h
utmp.h	login: Move libutil into libc	2021-06-30 08:43:37 +02:00
values.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
verify.h	posix: Sync regex with gnulib	2019-11-06 09:20:52 -03:00
wait.h	Add missing header wrappers under include/	2019-02-16 08:25:16 +01:00
wchar.h	Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI	2020-04-30 08:52:08 -05:00
wctype.h
wordexp.h