[v6] posix: Add terminal control setting support for posix_spawn
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Patch applied to master at the time it was sent
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| dj/TryBot-32bit |
success
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Build for i686
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Commit Message
Currently there is no proper way to set the controlling terminal through
posix_spawn in race free manner [1]. This forces shell implementations
to keep using fork+exec when launching background process groups,
even when using posix_spawn yields better performance.
This patch adds a new GNU extension so the creating process can
configure the created process terminal group. This is done with a new
flag, POSIX_SPAWN_TCSETPGROUP, along with two new attribute functions:
posix_spawnattr_tcsetpgrp_np, and posix_spawnattr_tcgetpgrp_np.
The function sets a new attribute, spawn-tcgroupfd, that references to
the controlling terminal.
The controlling terminal is set after the spawn-pgroup attribute, and
uses the spawn-tcgroupfd along with current creating process group
(so it is composable with POSIX_SPAWN_SETPGROUP).
To create a process and set the controlling terminal, one can use the
following sequence:
posix_spawnattr_t attr;
posix_spawnattr_init (&attr);
posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP);
posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
If the idea is also to create a new process groups:
posix_spawnattr_t attr;
posix_spawnattr_init (&attr);
posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
| POSIX_SPAWN_SETPGROUP);
posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
posix_spawnattr_setpgroup (&attr, 0);
The controlling terminal file descriptor is ignored if the new flag is
not set.
This interface is slight different than the one provided by QNX [2],
which only provides the POSIX_SPAWN_TCSETPGROUP flag. The QNX
documentation does not specify how the controlling terminal is obtained
nor how it iteracts with POSIX_SPAWN_SETPGROUP. Since a glibc
implementation is library based, it is more straightforward and avoid
requires additional file descriptor operations to request the caller
to setup the controlling terminal file descriptor (and it also allows
a bit less error handling by posix_spawn).
Checked on x86_64-linux-gnu and i686-linux-gnu.
[1] https://github.com/ksh93/ksh/issues/79
[2] https://www.qnx.com/developers/docs/7.0.0/index.html#com.qnx.doc.neutrino.lib_ref/topic/p/posix_spawn.html
---
v6: Rebased against master and added or1k abilist.
v5: Rebased against master.
v3: Properly added posix/tst-spawn6 on tests.
v4: Rebased against master.
---
NEWS | 5 +
include/unistd.h | 4 +
posix/Makefile | 6 +-
posix/Versions | 4 +
posix/spawn.h | 16 +-
posix/spawnattr_setflags.c | 3 +-
posix/spawnattr_tcgetpgrp.c | 26 +++
posix/spawnattr_tcsetpgrp.c | 26 +++
posix/tst-spawn6.c | 173 ++++++++++++++++++
sysdeps/mach/hurd/libhurduser.abilist | 0
sysdeps/mach/hurd/spawni.c | 13 ++
sysdeps/mach/libmachuser.abilist | 0
sysdeps/unix/bsd/tcsetpgrp.c | 4 +-
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arc/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/le/libc.abilist | 2 +
sysdeps/unix/sysv/linux/csky/libc.abilist | 2 +
sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
.../sysv/linux/m68k/coldfire/libc.abilist | 2 +
.../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
.../sysv/linux/microblaze/be/libc.abilist | 2 +
.../sysv/linux/microblaze/le/libc.abilist | 2 +
.../sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
.../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
.../sysv/linux/mips/mips64/n32/libc.abilist | 2 +
.../sysv/linux/mips/mips64/n64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
sysdeps/unix/sysv/linux/or1k/libc.abilist | 2 +
.../linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
.../powerpc/powerpc32/nofpu/libc.abilist | 2 +
.../linux/powerpc/powerpc64/be/libc.abilist | 2 +
.../linux/powerpc/powerpc64/le/libc.abilist | 2 +
.../unix/sysv/linux/riscv/rv32/libc.abilist | 2 +
.../unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
.../unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
.../unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/be/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/le/libc.abilist | 2 +
.../sysv/linux/sparc/sparc32/libc.abilist | 2 +
.../sysv/linux/sparc/sparc64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/spawni.c | 11 ++
sysdeps/unix/sysv/linux/syscalls.list | 2 +-
.../unix/sysv/linux/x86_64/64/libc.abilist | 2 +
.../unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
termios/tcsetpgrp.c | 5 +-
49 files changed, 356 insertions(+), 8 deletions(-)
create mode 100644 posix/spawnattr_tcgetpgrp.c
create mode 100644 posix/spawnattr_tcsetpgrp.c
create mode 100644 posix/tst-spawn6.c
delete mode 100644 sysdeps/mach/hurd/libhurduser.abilist
delete mode 100644 sysdeps/mach/libmachuser.abilist
Comments
* Adhemerval Zanella via Libc-alpha:
> diff --git a/include/unistd.h b/include/unistd.h
> index 2bcdd494e1..6e71d80015 100644
> --- a/include/unistd.h
> +++ b/include/unistd.h
> @@ -183,6 +183,10 @@ extern int __truncate (const char *path, __off_t __length);
> extern void *__sbrk (intptr_t __delta);
> libc_hidden_proto (__sbrk)
>
> +extern int __tcsetpgrp (int fd, __pid_t pgrp);
> +libc_hidden_proto (__tcsetpgrp)
> +extern pid_t __getpgrp (void);
> +libc_hidden_proto (__getpgrp);
Is __getpgrp used anywhere?
The patch seems to use __getpgid instead.
> + /* Trying to set the controlling terminal after a setsid() incurs in a ENOTTY
No () after function name?
Thanks,
Florian
On 13/01/2022 12:03, Florian Weimer wrote:
> * Adhemerval Zanella via Libc-alpha:
>
>> diff --git a/include/unistd.h b/include/unistd.h
>> index 2bcdd494e1..6e71d80015 100644
>> --- a/include/unistd.h
>> +++ b/include/unistd.h
>> @@ -183,6 +183,10 @@ extern int __truncate (const char *path, __off_t __length);
>> extern void *__sbrk (intptr_t __delta);
>> libc_hidden_proto (__sbrk)
>>
>> +extern int __tcsetpgrp (int fd, __pid_t pgrp);
>> +libc_hidden_proto (__tcsetpgrp)
>> +extern pid_t __getpgrp (void);
>> +libc_hidden_proto (__getpgrp);
>
> Is __getpgrp used anywhere?
>
> The patch seems to use __getpgid instead.
This is a leftover from previous iterations, I will remove it.
>
>> + /* Trying to set the controlling terminal after a setsid() incurs in a ENOTTY
>
> No () after function name?
Ack.
>
> Thanks,
> Florian
>
On 1/13/22 09:39, Adhemerval Zanella via Libc-alpha wrote:
> Currently there is no proper way to set the controlling terminal through
> posix_spawn in race free manner [1]. This forces shell implementations
> to keep using fork+exec when launching background process groups,
> even when using posix_spawn yields better performance.
Please post v7 with changes (and Florian's suggestions).
- NEWS text changes.
- Update dates to 2022.
Agreed, this is a real problem with an identified solution (rather than an abstract API
that we're adding for a future use case).
The fix looks very good to me, and I'm ready to give Reviewed-by and Tested-by once you
post v7 with the fixes for inclusion in glibc 2.35.
> This patch adds a new GNU extension so the creating process can
> configure the created process terminal group. This is done with a new
> flag, POSIX_SPAWN_TCSETPGROUP, along with two new attribute functions:
> posix_spawnattr_tcsetpgrp_np, and posix_spawnattr_tcgetpgrp_np.
> The function sets a new attribute, spawn-tcgroupfd, that references to
> the controlling terminal.
OK.
> The controlling terminal is set after the spawn-pgroup attribute, and
> uses the spawn-tcgroupfd along with current creating process group
> (so it is composable with POSIX_SPAWN_SETPGROUP).
OK. In general you need an fd (int) and pgrp (pid_t).
> To create a process and set the controlling terminal, one can use the
> following sequence:
>
> posix_spawnattr_t attr;
> posix_spawnattr_init (&attr);
> posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP);
> posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
OK.
>
> If the idea is also to create a new process groups:
>
> posix_spawnattr_t attr;
> posix_spawnattr_init (&attr);
> posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
> | POSIX_SPAWN_SETPGROUP);
> posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
> posix_spawnattr_setpgroup (&attr, 0);
>
> The controlling terminal file descriptor is ignored if the new flag is
> not set.
>
> This interface is slight different than the one provided by QNX [2],
> which only provides the POSIX_SPAWN_TCSETPGROUP flag. The QNX
> documentation does not specify how the controlling terminal is obtained
> nor how it iteracts with POSIX_SPAWN_SETPGROUP. Since a glibc
> implementation is library based, it is more straightforward and avoid
> requires additional file descriptor operations to request the caller
> to setup the controlling terminal file descriptor (and it also allows
> a bit less error handling by posix_spawn).
>
> Checked on x86_64-linux-gnu and i686-linux-gnu.
>
> [1] https://github.com/ksh93/ksh/issues/79
> [2] https://www.qnx.com/developers/docs/7.0.0/index.html#com.qnx.doc.neutrino.lib_ref/topic/p/posix_spawn.html
> ---
> v6: Rebased against master and added or1k abilist.
> v5: Rebased against master.
> v3: Properly added posix/tst-spawn6 on tests.
> v4: Rebased against master.
> ---
> NEWS | 5 +
> include/unistd.h | 4 +
> posix/Makefile | 6 +-
> posix/Versions | 4 +
> posix/spawn.h | 16 +-
> posix/spawnattr_setflags.c | 3 +-
> posix/spawnattr_tcgetpgrp.c | 26 +++
> posix/spawnattr_tcsetpgrp.c | 26 +++
> posix/tst-spawn6.c | 173 ++++++++++++++++++
> sysdeps/mach/hurd/libhurduser.abilist | 0
> sysdeps/mach/hurd/spawni.c | 13 ++
> sysdeps/mach/libmachuser.abilist | 0
> sysdeps/unix/bsd/tcsetpgrp.c | 4 +-
> sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/arc/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/arm/be/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/arm/le/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/csky/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
> .../sysv/linux/m68k/coldfire/libc.abilist | 2 +
> .../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
> .../sysv/linux/microblaze/be/libc.abilist | 2 +
> .../sysv/linux/microblaze/le/libc.abilist | 2 +
> .../sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
> .../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
> .../sysv/linux/mips/mips64/n32/libc.abilist | 2 +
> .../sysv/linux/mips/mips64/n64/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/or1k/libc.abilist | 2 +
> .../linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
> .../powerpc/powerpc32/nofpu/libc.abilist | 2 +
> .../linux/powerpc/powerpc64/be/libc.abilist | 2 +
> .../linux/powerpc/powerpc64/le/libc.abilist | 2 +
> .../unix/sysv/linux/riscv/rv32/libc.abilist | 2 +
> .../unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
> .../unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
> .../unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/sh/be/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/sh/le/libc.abilist | 2 +
> .../sysv/linux/sparc/sparc32/libc.abilist | 2 +
> .../sysv/linux/sparc/sparc64/libc.abilist | 2 +
> sysdeps/unix/sysv/linux/spawni.c | 11 ++
> sysdeps/unix/sysv/linux/syscalls.list | 2 +-
> .../unix/sysv/linux/x86_64/64/libc.abilist | 2 +
> .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
> termios/tcsetpgrp.c | 5 +-
> 49 files changed, 356 insertions(+), 8 deletions(-)
> create mode 100644 posix/spawnattr_tcgetpgrp.c
> create mode 100644 posix/spawnattr_tcsetpgrp.c
> create mode 100644 posix/tst-spawn6.c
> delete mode 100644 sysdeps/mach/hurd/libhurduser.abilist
> delete mode 100644 sysdeps/mach/libmachuser.abilist
>
> diff --git a/NEWS b/NEWS
> index a957b19fdc..0ee67c5f29 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -120,6 +120,11 @@ Major new features:
> The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
> 64-bit file offsets (LFS default).
>
> +* The functions posix_spawnattr_tcsetpgrp_np and posix_spawnattr_tcgetpgrp_np
> + have been added, enabling posix_spawn and posix_spawnp to set the
> + controlling terminal in the new process in a non race manner. These
Change:
s/non race manner/race free manner/g.
> + functions are GNU extensions.
> +
> Deprecated and removed features, and other changes affecting compatibility:
>
> * On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support
> diff --git a/include/unistd.h b/include/unistd.h
> index 2bcdd494e1..6e71d80015 100644
> --- a/include/unistd.h
> +++ b/include/unistd.h
> @@ -183,6 +183,10 @@ extern int __truncate (const char *path, __off_t __length);
> extern void *__sbrk (intptr_t __delta);
> libc_hidden_proto (__sbrk)
>
> +extern int __tcsetpgrp (int fd, __pid_t pgrp);
> +libc_hidden_proto (__tcsetpgrp)
> +extern pid_t __getpgrp (void);
> +libc_hidden_proto (__getpgrp);
Florian noted __getpgrp not used.
>
> /* This variable is set nonzero at startup if the process's effective
> IDs differ from its real IDs, or it is otherwise indicated that
> diff --git a/posix/Makefile b/posix/Makefile
> index 24d8bfd303..6291b1158a 100644
> --- a/posix/Makefile
> +++ b/posix/Makefile
> @@ -64,6 +64,7 @@ routines := \
> spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni \
> spawnattr_getsigmask spawnattr_getschedpolicy spawnattr_getschedparam \
> spawnattr_setsigmask spawnattr_setschedpolicy spawnattr_setschedparam \
> + spawnattr_tcgetpgrp spawnattr_tcsetpgrp \
OK. Two additions.
> posix_madvise \
> get_child_max sched_cpucount sched_cpualloc sched_cpufree \
> streams-compat \
> @@ -108,7 +109,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \
> tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
> bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
> tst-wordexp-nocmd tst-execveat tst-spawn5 \
> - tst-sched_getaffinity
> + tst-sched_getaffinity tst-spawn6
OK. tst-spawn6 test.
>
> # Test for the glob symbol version that was replaced in glibc 2.27.
> ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)
> @@ -287,8 +288,9 @@ tst-exec-ARGS = -- $(host-test-program-cmd)
> tst-exec-static-ARGS = $(tst-exec-ARGS)
> tst-execvpe5-ARGS = -- $(host-test-program-cmd)
> tst-spawn-ARGS = -- $(host-test-program-cmd)
> -tst-spawn-static-ARGS = $(tst-spawn-ARGS)
> tst-spawn5-ARGS = -- $(host-test-program-cmd)
> +tst-spawn-static-ARGS = $(tst-spawn-ARGS)
> +tst-spawn6-ARGS = -- $(host-test-program-cmd)
OK. Though the other line didn't have to move?
> tst-dir-ARGS = `pwd` `cd $(common-objdir)/$(subdir); pwd` `cd $(common-objdir); pwd` $(objpfx)tst-dir
> tst-chmod-ARGS = $(objdir)
> tst-vfork3-ARGS = --test-dir=$(objpfx)
> diff --git a/posix/Versions b/posix/Versions
> index a78792135f..e4f4f649b0 100644
> --- a/posix/Versions
> +++ b/posix/Versions
> @@ -156,6 +156,10 @@ libc {
> execveat;
> posix_spawn_file_actions_addclosefrom_np;
> }
> + GLIBC_2.35 {
> + posix_spawnattr_tcgetpgrp_np;
> + posix_spawnattr_tcsetpgrp_np;
> + }
OK. Two new functions.
> GLIBC_PRIVATE {
> __libc_fork; __libc_pread; __libc_pwrite;
> __nanosleep_nocancel; __pause_nocancel;
> diff --git a/posix/spawn.h b/posix/spawn.h
> index 58f17d1277..7779020250 100644
> --- a/posix/spawn.h
> +++ b/posix/spawn.h
> @@ -34,7 +34,8 @@ typedef struct
> sigset_t __ss;
> struct sched_param __sp;
> int __policy;
> - int __pad[16];
> + int __ctty_fd;
> + int __pad[15];
OK. Add the fd.
> } posix_spawnattr_t;
>
>
> @@ -59,6 +60,7 @@ typedef struct
> #ifdef __USE_GNU
> # define POSIX_SPAWN_USEVFORK 0x40
> # define POSIX_SPAWN_SETSID 0x80
> +# define POSIX_SPAWN_TCSETPGROUP 0x100
OK. Consume another flag.
> #endif
>
>
> @@ -166,6 +168,18 @@ extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
> __restrict __schedparam)
> __THROW __nonnull ((1, 2));
>
> +#ifdef __USE_GNU
> +/* Make the spawned process the foreground process group on the terminal
> + associated with FD (which must be a controlling terminal, and still be
> + associated with its session). */
> +extern int posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *__attr, int fd)
> + __THROW __nonnull ((1));
OK. First arg non-null.
> +
> +/* Return the associated terminal FD in the attribute structure. */
> +extern int posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *
> + __restrict __attr, int *fd)
> + __THROW __nonnull ((1, 2));
OK. First and second args non-null.
> +#endif
>
> /* Initialize data structure for file attribute for `spawn' call. */
> extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
> diff --git a/posix/spawnattr_setflags.c b/posix/spawnattr_setflags.c
> index 3e6fe4ef03..603bfcf911 100644
> --- a/posix/spawnattr_setflags.c
> +++ b/posix/spawnattr_setflags.c
> @@ -26,7 +26,8 @@
> | POSIX_SPAWN_SETSCHEDPARAM \
> | POSIX_SPAWN_SETSCHEDULER \
> | POSIX_SPAWN_SETSID \
> - | POSIX_SPAWN_USEVFORK)
> + | POSIX_SPAWN_USEVFORK \
> + | POSIX_SPAWN_TCSETPGROUP)
OK.
>
> /* Store flags in the attribute structure. */
> int
> diff --git a/posix/spawnattr_tcgetpgrp.c b/posix/spawnattr_tcgetpgrp.c
> new file mode 100644
> index 0000000000..2c037b21b5
> --- /dev/null
> +++ b/posix/spawnattr_tcgetpgrp.c
> @@ -0,0 +1,26 @@
> +/* Get the controlling terminal option.
> + Copyright (C) 2021 Free Software Foundation, Inc.
Wrong date.
> + 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 <spawn.h>
> +
> +int
> +posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *attr, int *fd)
> +{
> + *fd = attr->__ctty_fd;
> + return 0;
OK.
> +}
> diff --git a/posix/spawnattr_tcsetpgrp.c b/posix/spawnattr_tcsetpgrp.c
> new file mode 100644
> index 0000000000..b1b5d5dba0
> --- /dev/null
> +++ b/posix/spawnattr_tcsetpgrp.c
> @@ -0,0 +1,26 @@
> +/* Set the controlling terminal option.
> + Copyright (C) 2021 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 <spawn.h>
> +
> +int
> +posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *attr, int fd)
> +{
> + attr->__ctty_fd = fd;
> + return 0;
> +}
OK.
> diff --git a/posix/tst-spawn6.c b/posix/tst-spawn6.c
> new file mode 100644
> index 0000000000..e3abb0f945
> --- /dev/null
> +++ b/posix/tst-spawn6.c
> @@ -0,0 +1,173 @@
> +/* Check posix_spawn set controlling terminal extension.
> + Copyright (C) 2021 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 <errno.h>
> +#include <fcntl.h>
> +#include <getopt.h>
> +#include <intprops.h>
> +#include <paths.h>
> +#include <spawn.h>
> +#include <stdbool.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <support/check.h>
> +#include <support/xunistd.h>
> +#include <sys/wait.h>
> +
> +static int
> +handle_restart (const char *argv1)
> +{
> + int fd = xopen (_PATH_TTY, O_RDONLY, 0600);
> +
> + /* If process group is not changed (POSIX_SPAWN_SETPGROUP), then check
> + the creating process one, otherwise check against the process group
> + itself. */
> + pid_t pgrp;
> + if (strcmp (argv1, "setgrpr") != 0)
> + TEST_COMPARE (sscanf (argv1, "%d", &pgrp), 1);
> + else
> + {
> + pgrp = getpgrp ();
> + /* Check if a new process group was actually created. */
> + pid_t ppid = getppid ();
> + pid_t pgid = getpgid (ppid);
> + TEST_VERIFY (pgid != pgrp);
> + }
> +
> + TEST_COMPARE (tcgetpgrp (fd), pgrp);
> +
> + xclose (fd);
> + return 0;
> +}
> +
> +static int restart;
> +#define CMDLINE_OPTIONS \
> + { "restart", no_argument, &restart, 1 },
> +
> +static void
> +run_subprogram (int argc, char *argv[], const posix_spawnattr_t *attr,
> + int exp_err)
> +{
> + short int flags;
> + TEST_COMPARE (posix_spawnattr_getflags (attr, &flags), 0);
> + bool setpgrp = flags & POSIX_SPAWN_SETPGROUP;
OK.
> +
> + char *spargv[9];
> + char pgrp[INT_STRLEN_BOUND (pid_t)];
> +
> + int i = 0;
> + for (; i < argc - 1; i++)
> + spargv[i] = argv[i + 1];
> + spargv[i++] = (char *) "--direct";
> + spargv[i++] = (char *) "--restart";
> + if (setpgrp)
> + spargv[i++] = (char *) "setgrpr";
> + else
> + {
> + snprintf (pgrp, sizeof pgrp, "%d", getpgrp ());
> + spargv[i++] = pgrp;
> + }
> + spargv[i] = NULL;
> +
> + pid_t pid;
> + TEST_COMPARE (posix_spawn (&pid, argv[1], NULL, attr, spargv, environ),
> + exp_err);
> + if (exp_err != 0)
> + return;
> +
> + int status;
> + TEST_COMPARE (xwaitpid (pid, &status, WUNTRACED), pid);
> + TEST_VERIFY (WIFEXITED (status));
> + TEST_VERIFY (!WIFSTOPPED (status));
> + TEST_VERIFY (!WIFSIGNALED (status));
> + TEST_COMPARE (WEXITSTATUS (status), 0);
> +}
> +
> +static int
> +do_test (int argc, char *argv[])
> +{
> + /* We must have either:
> + - One our fource parameters left if called initially:
Suggest:
- Four parameters left if called initially:
> + + path to ld.so optional
> + + "--library-path" optional
> + + the library path optional
> + + the application name
> + - six parameters left if called through re-execution:
> + + --setgrpr optional
> + */
> +
> + if (restart)
> + return handle_restart (argv[1]);
> +
> + int tcfd = xopen (_PATH_TTY, O_RDONLY, 0600);
> +
> + /* Check getters and setters. */
> + {
> + posix_spawnattr_t attr;
> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
OK. Set.
> +
> + int fd;
> + TEST_COMPARE (posix_spawnattr_tcgetpgrp_np (&attr, &fd), 0);
> + TEST_COMPARE (tcfd, fd);
OK. Get and compare.
> + }
> +
> + /* Check setting the controlling terminal without changing the group. */
> + {
> + posix_spawnattr_t attr;
> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP),
> + 0);
> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
> +
> + run_subprogram (argc, argv, &attr, 0);
OK. exp_err is 0, so it should run, and not change the pgrp.
> + }
> +
> + /* Check setting both the controlling terminal and the create a new process
> + group. */
> + {
> + posix_spawnattr_t attr;
> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
> + | POSIX_SPAWN_SETPGROUP),
> + 0);
> + TEST_COMPARE (posix_spawnattr_setpgroup (&attr, 0), 0);
> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
OK. Doing both.
> +
> + run_subprogram (argc, argv, &attr, 0);
OK.
> + }
> +
> + /* Trying to set the controlling terminal after a setsid() incurs in a ENOTTY
> + from tcsetpgrp. */
> + {
> + posix_spawnattr_t attr;
> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
> + | POSIX_SPAWN_SETSID), 0);
> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
> +
> + run_subprogram (argc, argv, &attr, ENOTTY);
OK. exp_err is ENOTTY. Good check.
> + }
> +
> + xclose (tcfd);
> +
> + return 0;
> +}
> +
> +#define TEST_FUNCTION_ARGV do_test
> +#include <support/test-driver.c>
> diff --git a/sysdeps/mach/hurd/libhurduser.abilist b/sysdeps/mach/hurd/libhurduser.abilist
> deleted file mode 100644
> index e69de29bb2..0000000000
> diff --git a/sysdeps/mach/hurd/spawni.c b/sysdeps/mach/hurd/spawni.c
> index ebf2b5e27f..bccdd013bf 100644
> --- a/sysdeps/mach/hurd/spawni.c
> +++ b/sysdeps/mach/hurd/spawni.c
> @@ -390,6 +390,19 @@ retry:
> if (!err && (flags & POSIX_SPAWN_SETPGROUP) != 0)
> err = __proc_setpgrp (proc, new_pid, attrp->__pgrp);
>
> + /* Set the controlling terminal. */
> + if (!err && (flags & POSIX_SPAWN_TCSETPGROUP) != 0)
OK. Good, check for previous error otherwise try to do this.
> + {
> + pid_t pgrp;
> + /* Check if it is possible to avoid an extra syscall. */
> + if ((attrp->__flags & POSIX_SPAWN_SETPGROUP) != 0 && attrp->__pgrp != 0)
> + pgrp = attrp->__pgrp;
> + else
> + err = __proc_getpgrp (proc, new_pid, &pgrp);
OK. Set the pgrp... then...
> + if (!err)
> + err = __tcsetpgrp (attrp->__ctty_fd, pgrp);
OK. Call tcsetpgrp with fd and pgrp.
OK. Err is set and exposed with earlier errors not being overriden.
> + }
> +
> /* Set the effective user and group IDs. */
> if (!err && (flags & POSIX_SPAWN_RESETIDS) != 0)
> {
> diff --git a/sysdeps/mach/libmachuser.abilist b/sysdeps/mach/libmachuser.abilist
> deleted file mode 100644
> index e69de29bb2..0000000000
> diff --git a/sysdeps/unix/bsd/tcsetpgrp.c b/sysdeps/unix/bsd/tcsetpgrp.c
> index a7c34ae8d5..272f207c3d 100644
> --- a/sysdeps/unix/bsd/tcsetpgrp.c
> +++ b/sysdeps/unix/bsd/tcsetpgrp.c
> @@ -22,7 +22,9 @@
>
> /* Set the foreground process group ID of FD set PGRP_ID. */
> int
> -tcsetpgrp (int fd, pid_t pgrp_id)
> +__tcsetpgrp (int fd, pid_t pgrp_id)
OK.
> {
> return __ioctl (fd, TIOCSPGRP, &pgrp_id);
> }
> +weak_alias (__tcsetpgrp, tcsetpgrp)
> +libc_hidden_def (__tcsetpgrp)
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index fed942ed4b..67300eb86a 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2614,3 +2614,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index 2867932704..3aee0b5cc0 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2711,6 +2711,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 239db7bab0..633ac44852 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2375,3 +2375,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index bc79dcfe8a..40bd490a47 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -493,6 +493,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _Exit F
> GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
> GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index 614607fd6b..eaecc3a2c4 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -490,6 +490,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _Exit F
> GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
> GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index 2b61543f0d..1ca0677a9d 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2649,3 +2649,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index 6b3cb1adb4..8a7fb90c6b 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2598,6 +2598,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index 7f608c1b64..c2bfceb01e 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2782,6 +2782,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index 865deec43f..16a8b3f141 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2549,6 +2549,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index a172d74632..ed03495796 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -494,6 +494,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _Exit F
> GLIBC_2.4 _IO_2_1_stderr_ D 0x98
> GLIBC_2.4 _IO_2_1_stdin_ D 0x98
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 174e9c7739..d69aac0863 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2725,6 +2725,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index d042be1369..14e96a0d09 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2698,3 +2698,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index 332da62de2..32176ecc85 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2695,3 +2695,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 2d6ec0d0e8..6382e8fd4f 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2690,6 +2690,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 6c5befa72b..6f1ea0edd0 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2688,6 +2688,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index 5fb24c97e1..a07f0b558c 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2696,6 +2696,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index f4f29fc15e..33be3c6545 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2600,6 +2600,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index 2e7300cd05..cd150f8e86 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2737,3 +2737,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index eea4e3dc3f..04a888a296 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -1394,6 +1394,8 @@ GLIBC_2.35 posix_spawnattr_setschedparam F
> GLIBC_2.35 posix_spawnattr_setschedpolicy F
> GLIBC_2.35 posix_spawnattr_setsigdefault F
> GLIBC_2.35 posix_spawnattr_setsigmask F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.35 posix_spawnp F
> GLIBC_2.35 ppoll F
> GLIBC_2.35 prctl F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 129a2f16a7..ca95ab708f 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2752,6 +2752,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index 7e23226779..e2a5b871ba 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2785,6 +2785,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index 6f97392b70..ae343bfc69 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2508,6 +2508,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index 29058a041a..e2a94dca60 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2810,3 +2810,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index d2924766d2..fed2375d8e 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2377,3 +2377,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index b770e05da3..cfa0be4ea2 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2577,3 +2577,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index bed3433a2b..74af810cb1 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2750,6 +2750,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index 4f1a143da5..066ad16f19 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2545,6 +2545,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index 92c8dec8ec..a096cf3e2b 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2605,6 +2605,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 263da58cb7..89ad4c54e9 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2602,6 +2602,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index 0171efe7db..bcd2bd2b76 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2745,6 +2745,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 _IO_fprintf F
> GLIBC_2.4 _IO_printf F
> GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 7f8d45f362..b9db516d26 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2572,6 +2572,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c
> index 4c2d4195cd..93359c708b 100644
> --- a/sysdeps/unix/sysv/linux/spawni.c
> +++ b/sysdeps/unix/sysv/linux/spawni.c
> @@ -164,6 +164,17 @@ __spawni_child (void *arguments)
> && __setpgid (0, attr->__pgrp) != 0)
> goto fail;
>
> + /* Set the controlling terminal. */
> + if ((attr->__flags & POSIX_SPAWN_TCSETPGROUP) != 0)
> + {
> + /* Check if it is possible to avoid an extra syscall. */
> + pid_t pgrp = (attr->__flags & POSIX_SPAWN_SETPGROUP) != 0
> + && attr->__pgrp != 0
> + ? attr->__pgrp : __getpgid (0);
> + if (__tcsetpgrp (attr->__ctty_fd, pgrp) != 0)
OK. Both operations in one.
> + goto fail;
> + }
> +
> /* Set the effective user and group IDs. */
> if ((attr->__flags & POSIX_SPAWN_RESETIDS) != 0
> && (local_seteuid (__getuid ()) != 0
> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
> index c93c0d8193..3a21af8a4d 100644
> --- a/sysdeps/unix/sysv/linux/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/syscalls.list
> @@ -17,7 +17,7 @@ getpid - getpid Ei: __getpid getpid
> getegid - getegid Ei: __getegid getegid
> geteuid - geteuid Ei: __geteuid geteuid
> getpgid - getpgid i:i __getpgid getpgid
> -getpgrp - getpgrp Ei: getpgrp
> +getpgrp - getpgrp Ei: __getpgrp getpgrp
OK. Adding alias.
> getppid - getppid Ei: __getppid getppid
> getresuid - getresuid i:ppp getresuid
> getresgid - getresgid i:ppp getresgid
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index c2f1a8ecc6..6876db985b 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2523,6 +2523,8 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> GLIBC_2.4 __confstr_chk F
> GLIBC_2.4 __fgets_chk F
> GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 8b43acf100..5cb17d8c82 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2629,3 +2629,5 @@ GLIBC_2.34 tss_get F
> GLIBC_2.34 tss_set F
> GLIBC_2.35 __memcmpeq F
> GLIBC_2.35 _dl_find_object F
> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
> diff --git a/termios/tcsetpgrp.c b/termios/tcsetpgrp.c
> index 581328b12a..1e4ff0987d 100644
> --- a/termios/tcsetpgrp.c
> +++ b/termios/tcsetpgrp.c
> @@ -21,7 +21,7 @@
>
> /* Set the foreground process group ID of FD set PGRP_ID. */
> int
> -tcsetpgrp (int fd, pid_t pgrp_id)
> +__tcsetpgrp (int fd, pid_t pgrp_id)
OK.
> {
> if (fd < 0)
> {
> @@ -32,6 +32,7 @@ tcsetpgrp (int fd, pid_t pgrp_id)
> __set_errno (ENOSYS);
> return -1;
> }
> -
> +weak_alias (__tcsetpgrp, tcsetpgrp);
> +libc_hidden_def (__tcsetpgrp)
OK.
>
> stub_warning (tcsetpgrp)
On 24/01/2022 14:25, Carlos O'Donell wrote:
> On 1/13/22 09:39, Adhemerval Zanella via Libc-alpha wrote:
>> Currently there is no proper way to set the controlling terminal through
>> posix_spawn in race free manner [1]. This forces shell implementations
>> to keep using fork+exec when launching background process groups,
>> even when using posix_spawn yields better performance.
>
> Please post v7 with changes (and Florian's suggestions).
> - NEWS text changes.
> - Update dates to 2022.
>
> Agreed, this is a real problem with an identified solution (rather than an abstract API
> that we're adding for a future use case).
>
> The fix looks very good to me, and I'm ready to give Reviewed-by and Tested-by once you
> post v7 with the fixes for inclusion in glibc 2.35.
>
>> This patch adds a new GNU extension so the creating process can
>> configure the created process terminal group. This is done with a new
>> flag, POSIX_SPAWN_TCSETPGROUP, along with two new attribute functions:
>> posix_spawnattr_tcsetpgrp_np, and posix_spawnattr_tcgetpgrp_np.
>> The function sets a new attribute, spawn-tcgroupfd, that references to
>> the controlling terminal.
>
> OK.
>
>> The controlling terminal is set after the spawn-pgroup attribute, and
>> uses the spawn-tcgroupfd along with current creating process group
>> (so it is composable with POSIX_SPAWN_SETPGROUP).
>
> OK. In general you need an fd (int) and pgrp (pid_t).
>
>> To create a process and set the controlling terminal, one can use the
>> following sequence:
>>
>> posix_spawnattr_t attr;
>> posix_spawnattr_init (&attr);
>> posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP);
>> posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
>
> OK.
>
>>
>> If the idea is also to create a new process groups:
>>
>> posix_spawnattr_t attr;
>> posix_spawnattr_init (&attr);
>> posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
>> | POSIX_SPAWN_SETPGROUP);
>> posix_spawnattr_tcsetpgrp_np (&attr, tcfd);
>> posix_spawnattr_setpgroup (&attr, 0);
>>
>> The controlling terminal file descriptor is ignored if the new flag is
>> not set.
>>
>> This interface is slight different than the one provided by QNX [2],
>> which only provides the POSIX_SPAWN_TCSETPGROUP flag. The QNX
>> documentation does not specify how the controlling terminal is obtained
>> nor how it iteracts with POSIX_SPAWN_SETPGROUP. Since a glibc
>> implementation is library based, it is more straightforward and avoid
>> requires additional file descriptor operations to request the caller
>> to setup the controlling terminal file descriptor (and it also allows
>> a bit less error handling by posix_spawn).
>>
>> Checked on x86_64-linux-gnu and i686-linux-gnu.
>>
>> [1] https://github.com/ksh93/ksh/issues/79
>> [2] https://www.qnx.com/developers/docs/7.0.0/index.html#com.qnx.doc.neutrino.lib_ref/topic/p/posix_spawn.html
>> ---
>> v6: Rebased against master and added or1k abilist.
>> v5: Rebased against master.
>> v3: Properly added posix/tst-spawn6 on tests.
>> v4: Rebased against master.
>> ---
>> NEWS | 5 +
>> include/unistd.h | 4 +
>> posix/Makefile | 6 +-
>> posix/Versions | 4 +
>> posix/spawn.h | 16 +-
>> posix/spawnattr_setflags.c | 3 +-
>> posix/spawnattr_tcgetpgrp.c | 26 +++
>> posix/spawnattr_tcsetpgrp.c | 26 +++
>> posix/tst-spawn6.c | 173 ++++++++++++++++++
>> sysdeps/mach/hurd/libhurduser.abilist | 0
>> sysdeps/mach/hurd/spawni.c | 13 ++
>> sysdeps/mach/libmachuser.abilist | 0
>> sysdeps/unix/bsd/tcsetpgrp.c | 4 +-
>> sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/arc/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/arm/be/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/arm/le/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/csky/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
>> .../sysv/linux/m68k/coldfire/libc.abilist | 2 +
>> .../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
>> .../sysv/linux/microblaze/be/libc.abilist | 2 +
>> .../sysv/linux/microblaze/le/libc.abilist | 2 +
>> .../sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
>> .../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
>> .../sysv/linux/mips/mips64/n32/libc.abilist | 2 +
>> .../sysv/linux/mips/mips64/n64/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/or1k/libc.abilist | 2 +
>> .../linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
>> .../powerpc/powerpc32/nofpu/libc.abilist | 2 +
>> .../linux/powerpc/powerpc64/be/libc.abilist | 2 +
>> .../linux/powerpc/powerpc64/le/libc.abilist | 2 +
>> .../unix/sysv/linux/riscv/rv32/libc.abilist | 2 +
>> .../unix/sysv/linux/riscv/rv64/libc.abilist | 2 +
>> .../unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
>> .../unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/sh/be/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/sh/le/libc.abilist | 2 +
>> .../sysv/linux/sparc/sparc32/libc.abilist | 2 +
>> .../sysv/linux/sparc/sparc64/libc.abilist | 2 +
>> sysdeps/unix/sysv/linux/spawni.c | 11 ++
>> sysdeps/unix/sysv/linux/syscalls.list | 2 +-
>> .../unix/sysv/linux/x86_64/64/libc.abilist | 2 +
>> .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
>> termios/tcsetpgrp.c | 5 +-
>> 49 files changed, 356 insertions(+), 8 deletions(-)
>> create mode 100644 posix/spawnattr_tcgetpgrp.c
>> create mode 100644 posix/spawnattr_tcsetpgrp.c
>> create mode 100644 posix/tst-spawn6.c
>> delete mode 100644 sysdeps/mach/hurd/libhurduser.abilist
>> delete mode 100644 sysdeps/mach/libmachuser.abilist
>>
>> diff --git a/NEWS b/NEWS
>> index a957b19fdc..0ee67c5f29 100644
>> --- a/NEWS
>> +++ b/NEWS
>> @@ -120,6 +120,11 @@ Major new features:
>> The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
>> 64-bit file offsets (LFS default).
>>
>> +* The functions posix_spawnattr_tcsetpgrp_np and posix_spawnattr_tcgetpgrp_np
>> + have been added, enabling posix_spawn and posix_spawnp to set the
>> + controlling terminal in the new process in a non race manner. These
>
> Change:
> s/non race manner/race free manner/g.
Ack.
>
>> + functions are GNU extensions.
>
>
>
>> +
>> Deprecated and removed features, and other changes affecting compatibility:
>>
>> * On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support
>> diff --git a/include/unistd.h b/include/unistd.h
>> index 2bcdd494e1..6e71d80015 100644
>> --- a/include/unistd.h
>> +++ b/include/unistd.h
>> @@ -183,6 +183,10 @@ extern int __truncate (const char *path, __off_t __length);
>> extern void *__sbrk (intptr_t __delta);
>> libc_hidden_proto (__sbrk)
>>
>> +extern int __tcsetpgrp (int fd, __pid_t pgrp);
>> +libc_hidden_proto (__tcsetpgrp)
>> +extern pid_t __getpgrp (void);
>> +libc_hidden_proto (__getpgrp);
>
> Florian noted __getpgrp not used.
>
Ack.
>>
>> /* This variable is set nonzero at startup if the process's effective
>> IDs differ from its real IDs, or it is otherwise indicated that
>> diff --git a/posix/Makefile b/posix/Makefile
>> index 24d8bfd303..6291b1158a 100644
>> --- a/posix/Makefile
>> +++ b/posix/Makefile
>> @@ -64,6 +64,7 @@ routines := \
>> spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni \
>> spawnattr_getsigmask spawnattr_getschedpolicy spawnattr_getschedparam \
>> spawnattr_setsigmask spawnattr_setschedpolicy spawnattr_setschedparam \
>> + spawnattr_tcgetpgrp spawnattr_tcsetpgrp \
>
> OK. Two additions.
>
>> posix_madvise \
>> get_child_max sched_cpucount sched_cpualloc sched_cpufree \
>> streams-compat \
>> @@ -108,7 +109,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \
>> tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
>> bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
>> tst-wordexp-nocmd tst-execveat tst-spawn5 \
>> - tst-sched_getaffinity
>> + tst-sched_getaffinity tst-spawn6
>
> OK. tst-spawn6 test.
>
>>
>> # Test for the glob symbol version that was replaced in glibc 2.27.
>> ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)
>> @@ -287,8 +288,9 @@ tst-exec-ARGS = -- $(host-test-program-cmd)
>> tst-exec-static-ARGS = $(tst-exec-ARGS)
>> tst-execvpe5-ARGS = -- $(host-test-program-cmd)
>> tst-spawn-ARGS = -- $(host-test-program-cmd)
>> -tst-spawn-static-ARGS = $(tst-spawn-ARGS)
>> tst-spawn5-ARGS = -- $(host-test-program-cmd)
>> +tst-spawn-static-ARGS = $(tst-spawn-ARGS)
>> +tst-spawn6-ARGS = -- $(host-test-program-cmd)
>
> OK. Though the other line didn't have to move?
I have moved tst-spawn-static-ARGS back to its original place.
>
>> tst-dir-ARGS = `pwd` `cd $(common-objdir)/$(subdir); pwd` `cd $(common-objdir); pwd` $(objpfx)tst-dir
>> tst-chmod-ARGS = $(objdir)
>> tst-vfork3-ARGS = --test-dir=$(objpfx)
>> diff --git a/posix/Versions b/posix/Versions
>> index a78792135f..e4f4f649b0 100644
>> --- a/posix/Versions
>> +++ b/posix/Versions
>> @@ -156,6 +156,10 @@ libc {
>> execveat;
>> posix_spawn_file_actions_addclosefrom_np;
>> }
>> + GLIBC_2.35 {
>> + posix_spawnattr_tcgetpgrp_np;
>> + posix_spawnattr_tcsetpgrp_np;
>> + }
>
> OK. Two new functions.
>
>> GLIBC_PRIVATE {
>> __libc_fork; __libc_pread; __libc_pwrite;
>> __nanosleep_nocancel; __pause_nocancel;
>> diff --git a/posix/spawn.h b/posix/spawn.h
>> index 58f17d1277..7779020250 100644
>> --- a/posix/spawn.h
>> +++ b/posix/spawn.h
>> @@ -34,7 +34,8 @@ typedef struct
>> sigset_t __ss;
>> struct sched_param __sp;
>> int __policy;
>> - int __pad[16];
>> + int __ctty_fd;
>> + int __pad[15];
>
> OK. Add the fd.
>
>> } posix_spawnattr_t;
>>
>>
>> @@ -59,6 +60,7 @@ typedef struct
>> #ifdef __USE_GNU
>> # define POSIX_SPAWN_USEVFORK 0x40
>> # define POSIX_SPAWN_SETSID 0x80
>> +# define POSIX_SPAWN_TCSETPGROUP 0x100
>
> OK. Consume another flag.
>
>> #endif
>>
>>
>> @@ -166,6 +168,18 @@ extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
>> __restrict __schedparam)
>> __THROW __nonnull ((1, 2));
>>
>> +#ifdef __USE_GNU
>> +/* Make the spawned process the foreground process group on the terminal
>> + associated with FD (which must be a controlling terminal, and still be
>> + associated with its session). */
>> +extern int posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *__attr, int fd)
>> + __THROW __nonnull ((1));
>
> OK. First arg non-null.
>
>> +
>> +/* Return the associated terminal FD in the attribute structure. */
>> +extern int posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *
>> + __restrict __attr, int *fd)
>> + __THROW __nonnull ((1, 2));
>
> OK. First and second args non-null.
>
>> +#endif
>>
>> /* Initialize data structure for file attribute for `spawn' call. */
>> extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
>> diff --git a/posix/spawnattr_setflags.c b/posix/spawnattr_setflags.c
>> index 3e6fe4ef03..603bfcf911 100644
>> --- a/posix/spawnattr_setflags.c
>> +++ b/posix/spawnattr_setflags.c
>> @@ -26,7 +26,8 @@
>> | POSIX_SPAWN_SETSCHEDPARAM \
>> | POSIX_SPAWN_SETSCHEDULER \
>> | POSIX_SPAWN_SETSID \
>> - | POSIX_SPAWN_USEVFORK)
>> + | POSIX_SPAWN_USEVFORK \
>> + | POSIX_SPAWN_TCSETPGROUP)
>
> OK.
>
>>
>> /* Store flags in the attribute structure. */
>> int
>> diff --git a/posix/spawnattr_tcgetpgrp.c b/posix/spawnattr_tcgetpgrp.c
>> new file mode 100644
>> index 0000000000..2c037b21b5
>> --- /dev/null
>> +++ b/posix/spawnattr_tcgetpgrp.c
>> @@ -0,0 +1,26 @@
>> +/* Get the controlling terminal option.
>> + Copyright (C) 2021 Free Software Foundation, Inc.
>
> Wrong date.
Ack, I have fixed on two other files as well.
>
>> + 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 <spawn.h>
>> +
>> +int
>> +posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *attr, int *fd)
>> +{
>> + *fd = attr->__ctty_fd;
>> + return 0;
>
> OK.
>
>> +}
>> diff --git a/posix/spawnattr_tcsetpgrp.c b/posix/spawnattr_tcsetpgrp.c
>> new file mode 100644
>> index 0000000000..b1b5d5dba0
>> --- /dev/null
>> +++ b/posix/spawnattr_tcsetpgrp.c
>> @@ -0,0 +1,26 @@
>> +/* Set the controlling terminal option.
>> + Copyright (C) 2021 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 <spawn.h>
>> +
>> +int
>> +posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *attr, int fd)
>> +{
>> + attr->__ctty_fd = fd;
>> + return 0;
>> +}
>
> OK.
>
>> diff --git a/posix/tst-spawn6.c b/posix/tst-spawn6.c
>> new file mode 100644
>> index 0000000000..e3abb0f945
>> --- /dev/null
>> +++ b/posix/tst-spawn6.c
>> @@ -0,0 +1,173 @@
>> +/* Check posix_spawn set controlling terminal extension.
>> + Copyright (C) 2021 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 <errno.h>
>> +#include <fcntl.h>
>> +#include <getopt.h>
>> +#include <intprops.h>
>> +#include <paths.h>
>> +#include <spawn.h>
>> +#include <stdbool.h>
>> +#include <stdio.h>
>> +#include <string.h>
>> +#include <support/check.h>
>> +#include <support/xunistd.h>
>> +#include <sys/wait.h>
>> +
>> +static int
>> +handle_restart (const char *argv1)
>> +{
>> + int fd = xopen (_PATH_TTY, O_RDONLY, 0600);
>> +
>> + /* If process group is not changed (POSIX_SPAWN_SETPGROUP), then check
>> + the creating process one, otherwise check against the process group
>> + itself. */
>> + pid_t pgrp;
>> + if (strcmp (argv1, "setgrpr") != 0)
>> + TEST_COMPARE (sscanf (argv1, "%d", &pgrp), 1);
>> + else
>> + {
>> + pgrp = getpgrp ();
>> + /* Check if a new process group was actually created. */
>> + pid_t ppid = getppid ();
>> + pid_t pgid = getpgid (ppid);
>> + TEST_VERIFY (pgid != pgrp);
>> + }
>> +
>> + TEST_COMPARE (tcgetpgrp (fd), pgrp);
>> +
>> + xclose (fd);
>> + return 0;
>> +}
>> +
>> +static int restart;
>> +#define CMDLINE_OPTIONS \
>> + { "restart", no_argument, &restart, 1 },
>> +
>> +static void
>> +run_subprogram (int argc, char *argv[], const posix_spawnattr_t *attr,
>> + int exp_err)
>> +{
>> + short int flags;
>> + TEST_COMPARE (posix_spawnattr_getflags (attr, &flags), 0);
>> + bool setpgrp = flags & POSIX_SPAWN_SETPGROUP;
>
> OK.
>
>> +
>> + char *spargv[9];
>> + char pgrp[INT_STRLEN_BOUND (pid_t)];
>> +
>> + int i = 0;
>> + for (; i < argc - 1; i++)
>> + spargv[i] = argv[i + 1];
>> + spargv[i++] = (char *) "--direct";
>> + spargv[i++] = (char *) "--restart";
>> + if (setpgrp)
>> + spargv[i++] = (char *) "setgrpr";
>> + else
>> + {
>> + snprintf (pgrp, sizeof pgrp, "%d", getpgrp ());
>> + spargv[i++] = pgrp;
>> + }
>> + spargv[i] = NULL;
I also added a test to check if 'i' does not overflow the 'spargv' size.
>> +
>> + pid_t pid;
>> + TEST_COMPARE (posix_spawn (&pid, argv[1], NULL, attr, spargv, environ),
>> + exp_err);
>> + if (exp_err != 0)
>> + return;
>> +
>> + int status;
>> + TEST_COMPARE (xwaitpid (pid, &status, WUNTRACED), pid);
>> + TEST_VERIFY (WIFEXITED (status));
>> + TEST_VERIFY (!WIFSTOPPED (status));
>> + TEST_VERIFY (!WIFSIGNALED (status));
>> + TEST_COMPARE (WEXITSTATUS (status), 0);
>> +}
>> +
>> +static int
>> +do_test (int argc, char *argv[])
>> +{
>> + /* We must have either:
>> + - One our fource parameters left if called initially:
>
> Suggest:
> - Four parameters left if called initially:
Ack.
>
>> + + path to ld.so optional
>> + + "--library-path" optional
>> + + the library path optional
>> + + the application name
>> + - six parameters left if called through re-execution:
>> + + --setgrpr optional
>> + */
>> +
>> + if (restart)
>> + return handle_restart (argv[1]);
>> +
>> + int tcfd = xopen (_PATH_TTY, O_RDONLY, 0600);
>> +
>> + /* Check getters and setters. */
>> + {
>> + posix_spawnattr_t attr;
>> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
>> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
>
> OK. Set.
>
>> +
>> + int fd;
>> + TEST_COMPARE (posix_spawnattr_tcgetpgrp_np (&attr, &fd), 0);
>> + TEST_COMPARE (tcfd, fd);
>
> OK. Get and compare.
>
>> + }
>> +
>> + /* Check setting the controlling terminal without changing the group. */
>> + {
>> + posix_spawnattr_t attr;
>> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
>> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP),
>> + 0);
>> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
>> +
>> + run_subprogram (argc, argv, &attr, 0);
>
> OK. exp_err is 0, so it should run, and not change the pgrp.
>
>> + }
>> +
>> + /* Check setting both the controlling terminal and the create a new process
>> + group. */
>> + {
>> + posix_spawnattr_t attr;
>> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
>> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
>> + | POSIX_SPAWN_SETPGROUP),
>> + 0);
>> + TEST_COMPARE (posix_spawnattr_setpgroup (&attr, 0), 0);
>> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
>
> OK. Doing both.
>
>> +
>> + run_subprogram (argc, argv, &attr, 0);
>
> OK.
>
>> + }
>> +
>> + /* Trying to set the controlling terminal after a setsid() incurs in a ENOTTY
>> + from tcsetpgrp. */
>> + {
>> + posix_spawnattr_t attr;
>> + TEST_COMPARE (posix_spawnattr_init (&attr), 0);
>> + TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
>> + | POSIX_SPAWN_SETSID), 0);
>> + TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
>> +
>> + run_subprogram (argc, argv, &attr, ENOTTY);
>
> OK. exp_err is ENOTTY. Good check.
>
>> + }
>> +
>> + xclose (tcfd);
>> +
>> + return 0;
>> +}
>> +
>> +#define TEST_FUNCTION_ARGV do_test
>> +#include <support/test-driver.c>
>> diff --git a/sysdeps/mach/hurd/libhurduser.abilist b/sysdeps/mach/hurd/libhurduser.abilist
>> deleted file mode 100644
>> index e69de29bb2..0000000000
>> diff --git a/sysdeps/mach/hurd/spawni.c b/sysdeps/mach/hurd/spawni.c
>> index ebf2b5e27f..bccdd013bf 100644
>> --- a/sysdeps/mach/hurd/spawni.c
>> +++ b/sysdeps/mach/hurd/spawni.c
>> @@ -390,6 +390,19 @@ retry:
>> if (!err && (flags & POSIX_SPAWN_SETPGROUP) != 0)
>> err = __proc_setpgrp (proc, new_pid, attrp->__pgrp);
>>
>> + /* Set the controlling terminal. */
>> + if (!err && (flags & POSIX_SPAWN_TCSETPGROUP) != 0)
>
> OK. Good, check for previous error otherwise try to do this.
>
>> + {
>> + pid_t pgrp;
>> + /* Check if it is possible to avoid an extra syscall. */
>> + if ((attrp->__flags & POSIX_SPAWN_SETPGROUP) != 0 && attrp->__pgrp != 0)
>> + pgrp = attrp->__pgrp;
>> + else
>> + err = __proc_getpgrp (proc, new_pid, &pgrp);
>
> OK. Set the pgrp... then...
>
>> + if (!err)
>> + err = __tcsetpgrp (attrp->__ctty_fd, pgrp);
>
> OK. Call tcsetpgrp with fd and pgrp.
>
> OK. Err is set and exposed with earlier errors not being overriden.
>
>> + }
>> +
>> /* Set the effective user and group IDs. */
>> if (!err && (flags & POSIX_SPAWN_RESETIDS) != 0)
>> {
>> diff --git a/sysdeps/mach/libmachuser.abilist b/sysdeps/mach/libmachuser.abilist
>> deleted file mode 100644
>> index e69de29bb2..0000000000
>> diff --git a/sysdeps/unix/bsd/tcsetpgrp.c b/sysdeps/unix/bsd/tcsetpgrp.c
>> index a7c34ae8d5..272f207c3d 100644
>> --- a/sysdeps/unix/bsd/tcsetpgrp.c
>> +++ b/sysdeps/unix/bsd/tcsetpgrp.c
>> @@ -22,7 +22,9 @@
>>
>> /* Set the foreground process group ID of FD set PGRP_ID. */
>> int
>> -tcsetpgrp (int fd, pid_t pgrp_id)
>> +__tcsetpgrp (int fd, pid_t pgrp_id)
>
> OK.
>
>> {
>> return __ioctl (fd, TIOCSPGRP, &pgrp_id);
>> }
>> +weak_alias (__tcsetpgrp, tcsetpgrp)
>> +libc_hidden_def (__tcsetpgrp)
>> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
>> index fed942ed4b..67300eb86a 100644
>> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
>> @@ -2614,3 +2614,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
>> index 2867932704..3aee0b5cc0 100644
>> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
>> @@ -2711,6 +2711,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
>> index 239db7bab0..633ac44852 100644
>> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
>> @@ -2375,3 +2375,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
>> index bc79dcfe8a..40bd490a47 100644
>> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
>> @@ -493,6 +493,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _Exit F
>> GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
>> GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
>> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
>> index 614607fd6b..eaecc3a2c4 100644
>> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
>> @@ -490,6 +490,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _Exit F
>> GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
>> GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
>> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
>> index 2b61543f0d..1ca0677a9d 100644
>> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
>> @@ -2649,3 +2649,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
>> index 6b3cb1adb4..8a7fb90c6b 100644
>> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
>> @@ -2598,6 +2598,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
>> index 7f608c1b64..c2bfceb01e 100644
>> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
>> @@ -2782,6 +2782,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
>> index 865deec43f..16a8b3f141 100644
>> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
>> @@ -2549,6 +2549,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
>> index a172d74632..ed03495796 100644
>> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
>> @@ -494,6 +494,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _Exit F
>> GLIBC_2.4 _IO_2_1_stderr_ D 0x98
>> GLIBC_2.4 _IO_2_1_stdin_ D 0x98
>> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
>> index 174e9c7739..d69aac0863 100644
>> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
>> @@ -2725,6 +2725,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
>> index d042be1369..14e96a0d09 100644
>> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
>> @@ -2698,3 +2698,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
>> index 332da62de2..32176ecc85 100644
>> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
>> @@ -2695,3 +2695,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
>> index 2d6ec0d0e8..6382e8fd4f 100644
>> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
>> @@ -2690,6 +2690,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
>> index 6c5befa72b..6f1ea0edd0 100644
>> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
>> @@ -2688,6 +2688,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
>> index 5fb24c97e1..a07f0b558c 100644
>> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
>> @@ -2696,6 +2696,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
>> index f4f29fc15e..33be3c6545 100644
>> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
>> @@ -2600,6 +2600,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
>> index 2e7300cd05..cd150f8e86 100644
>> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
>> @@ -2737,3 +2737,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
>> index eea4e3dc3f..04a888a296 100644
>> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
>> @@ -1394,6 +1394,8 @@ GLIBC_2.35 posix_spawnattr_setschedparam F
>> GLIBC_2.35 posix_spawnattr_setschedpolicy F
>> GLIBC_2.35 posix_spawnattr_setsigdefault F
>> GLIBC_2.35 posix_spawnattr_setsigmask F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.35 posix_spawnp F
>> GLIBC_2.35 ppoll F
>> GLIBC_2.35 prctl F
>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
>> index 129a2f16a7..ca95ab708f 100644
>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
>> @@ -2752,6 +2752,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
>> index 7e23226779..e2a5b871ba 100644
>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
>> @@ -2785,6 +2785,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
>> index 6f97392b70..ae343bfc69 100644
>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
>> @@ -2508,6 +2508,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
>> index 29058a041a..e2a94dca60 100644
>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
>> @@ -2810,3 +2810,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
>> index d2924766d2..fed2375d8e 100644
>> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
>> @@ -2377,3 +2377,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
>> index b770e05da3..cfa0be4ea2 100644
>> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
>> @@ -2577,3 +2577,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
>> index bed3433a2b..74af810cb1 100644
>> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
>> @@ -2750,6 +2750,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
>> index 4f1a143da5..066ad16f19 100644
>> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
>> @@ -2545,6 +2545,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
>> index 92c8dec8ec..a096cf3e2b 100644
>> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
>> @@ -2605,6 +2605,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
>> index 263da58cb7..89ad4c54e9 100644
>> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
>> @@ -2602,6 +2602,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
>> index 0171efe7db..bcd2bd2b76 100644
>> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
>> @@ -2745,6 +2745,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 _IO_fprintf F
>> GLIBC_2.4 _IO_printf F
>> GLIBC_2.4 _IO_sprintf F
>> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
>> index 7f8d45f362..b9db516d26 100644
>> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
>> @@ -2572,6 +2572,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c
>> index 4c2d4195cd..93359c708b 100644
>> --- a/sysdeps/unix/sysv/linux/spawni.c
>> +++ b/sysdeps/unix/sysv/linux/spawni.c
>> @@ -164,6 +164,17 @@ __spawni_child (void *arguments)
>> && __setpgid (0, attr->__pgrp) != 0)
>> goto fail;
>>
>> + /* Set the controlling terminal. */
>> + if ((attr->__flags & POSIX_SPAWN_TCSETPGROUP) != 0)
>> + {
>> + /* Check if it is possible to avoid an extra syscall. */
>> + pid_t pgrp = (attr->__flags & POSIX_SPAWN_SETPGROUP) != 0
>> + && attr->__pgrp != 0
>> + ? attr->__pgrp : __getpgid (0);
>> + if (__tcsetpgrp (attr->__ctty_fd, pgrp) != 0)
>
> OK. Both operations in one.
>
>> + goto fail;
>> + }
>> +
>> /* Set the effective user and group IDs. */
>> if ((attr->__flags & POSIX_SPAWN_RESETIDS) != 0
>> && (local_seteuid (__getuid ()) != 0
>> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
>> index c93c0d8193..3a21af8a4d 100644
>> --- a/sysdeps/unix/sysv/linux/syscalls.list
>> +++ b/sysdeps/unix/sysv/linux/syscalls.list
>> @@ -17,7 +17,7 @@ getpid - getpid Ei: __getpid getpid
>> getegid - getegid Ei: __getegid getegid
>> geteuid - geteuid Ei: __geteuid geteuid
>> getpgid - getpgid i:i __getpgid getpgid
>> -getpgrp - getpgrp Ei: getpgrp
>> +getpgrp - getpgrp Ei: __getpgrp getpgrp
>
> OK. Adding alias.
>
>> getppid - getppid Ei: __getppid getppid
>> getresuid - getresuid i:ppp getresuid
>> getresgid - getresgid i:ppp getresgid
>> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
>> index c2f1a8ecc6..6876db985b 100644
>> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
>> @@ -2523,6 +2523,8 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> GLIBC_2.4 __confstr_chk F
>> GLIBC_2.4 __fgets_chk F
>> GLIBC_2.4 __fgets_unlocked_chk F
>> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
>> index 8b43acf100..5cb17d8c82 100644
>> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
>> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
>> @@ -2629,3 +2629,5 @@ GLIBC_2.34 tss_get F
>> GLIBC_2.34 tss_set F
>> GLIBC_2.35 __memcmpeq F
>> GLIBC_2.35 _dl_find_object F
>> +GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
>> +GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
>> diff --git a/termios/tcsetpgrp.c b/termios/tcsetpgrp.c
>> index 581328b12a..1e4ff0987d 100644
>> --- a/termios/tcsetpgrp.c
>> +++ b/termios/tcsetpgrp.c
>> @@ -21,7 +21,7 @@
>>
>> /* Set the foreground process group ID of FD set PGRP_ID. */
>> int
>> -tcsetpgrp (int fd, pid_t pgrp_id)
>> +__tcsetpgrp (int fd, pid_t pgrp_id)
>
> OK.
>
>> {
>> if (fd < 0)
>> {
>> @@ -32,6 +32,7 @@ tcsetpgrp (int fd, pid_t pgrp_id)
>> __set_errno (ENOSYS);
>> return -1;
>> }
>> -
>> +weak_alias (__tcsetpgrp, tcsetpgrp);
>> +libc_hidden_def (__tcsetpgrp)
>
> OK.
>
>>
>> stub_warning (tcsetpgrp)
>
>
@@ -120,6 +120,11 @@ Major new features:
The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
64-bit file offsets (LFS default).
+* The functions posix_spawnattr_tcsetpgrp_np and posix_spawnattr_tcgetpgrp_np
+ have been added, enabling posix_spawn and posix_spawnp to set the
+ controlling terminal in the new process in a non race manner. These
+ functions are GNU extensions.
+
Deprecated and removed features, and other changes affecting compatibility:
* On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support
@@ -183,6 +183,10 @@ extern int __truncate (const char *path, __off_t __length);
extern void *__sbrk (intptr_t __delta);
libc_hidden_proto (__sbrk)
+extern int __tcsetpgrp (int fd, __pid_t pgrp);
+libc_hidden_proto (__tcsetpgrp)
+extern pid_t __getpgrp (void);
+libc_hidden_proto (__getpgrp);
/* This variable is set nonzero at startup if the process's effective
IDs differ from its real IDs, or it is otherwise indicated that
@@ -64,6 +64,7 @@ routines := \
spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni \
spawnattr_getsigmask spawnattr_getschedpolicy spawnattr_getschedparam \
spawnattr_setsigmask spawnattr_setschedpolicy spawnattr_setschedparam \
+ spawnattr_tcgetpgrp spawnattr_tcsetpgrp \
posix_madvise \
get_child_max sched_cpucount sched_cpualloc sched_cpufree \
streams-compat \
@@ -108,7 +109,7 @@ tests := test-errno tstgetopt testfnm runtests runptests \
tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
bug-regex38 tst-regcomp-truncated tst-spawn-chdir \
tst-wordexp-nocmd tst-execveat tst-spawn5 \
- tst-sched_getaffinity
+ tst-sched_getaffinity tst-spawn6
# Test for the glob symbol version that was replaced in glibc 2.27.
ifeq ($(have-GLIBC_2.26)$(build-shared),yesyes)
@@ -287,8 +288,9 @@ tst-exec-ARGS = -- $(host-test-program-cmd)
tst-exec-static-ARGS = $(tst-exec-ARGS)
tst-execvpe5-ARGS = -- $(host-test-program-cmd)
tst-spawn-ARGS = -- $(host-test-program-cmd)
-tst-spawn-static-ARGS = $(tst-spawn-ARGS)
tst-spawn5-ARGS = -- $(host-test-program-cmd)
+tst-spawn-static-ARGS = $(tst-spawn-ARGS)
+tst-spawn6-ARGS = -- $(host-test-program-cmd)
tst-dir-ARGS = `pwd` `cd $(common-objdir)/$(subdir); pwd` `cd $(common-objdir); pwd` $(objpfx)tst-dir
tst-chmod-ARGS = $(objdir)
tst-vfork3-ARGS = --test-dir=$(objpfx)
@@ -156,6 +156,10 @@ libc {
execveat;
posix_spawn_file_actions_addclosefrom_np;
}
+ GLIBC_2.35 {
+ posix_spawnattr_tcgetpgrp_np;
+ posix_spawnattr_tcsetpgrp_np;
+ }
GLIBC_PRIVATE {
__libc_fork; __libc_pread; __libc_pwrite;
__nanosleep_nocancel; __pause_nocancel;
@@ -34,7 +34,8 @@ typedef struct
sigset_t __ss;
struct sched_param __sp;
int __policy;
- int __pad[16];
+ int __ctty_fd;
+ int __pad[15];
} posix_spawnattr_t;
@@ -59,6 +60,7 @@ typedef struct
#ifdef __USE_GNU
# define POSIX_SPAWN_USEVFORK 0x40
# define POSIX_SPAWN_SETSID 0x80
+# define POSIX_SPAWN_TCSETPGROUP 0x100
#endif
@@ -166,6 +168,18 @@ extern int posix_spawnattr_setschedparam (posix_spawnattr_t *__restrict __attr,
__restrict __schedparam)
__THROW __nonnull ((1, 2));
+#ifdef __USE_GNU
+/* Make the spawned process the foreground process group on the terminal
+ associated with FD (which must be a controlling terminal, and still be
+ associated with its session). */
+extern int posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *__attr, int fd)
+ __THROW __nonnull ((1));
+
+/* Return the associated terminal FD in the attribute structure. */
+extern int posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *
+ __restrict __attr, int *fd)
+ __THROW __nonnull ((1, 2));
+#endif
/* Initialize data structure for file attribute for `spawn' call. */
extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
@@ -26,7 +26,8 @@
| POSIX_SPAWN_SETSCHEDPARAM \
| POSIX_SPAWN_SETSCHEDULER \
| POSIX_SPAWN_SETSID \
- | POSIX_SPAWN_USEVFORK)
+ | POSIX_SPAWN_USEVFORK \
+ | POSIX_SPAWN_TCSETPGROUP)
/* Store flags in the attribute structure. */
int
new file mode 100644
@@ -0,0 +1,26 @@
+/* Get the controlling terminal option.
+ Copyright (C) 2021 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 <spawn.h>
+
+int
+posix_spawnattr_tcgetpgrp_np (const posix_spawnattr_t *attr, int *fd)
+{
+ *fd = attr->__ctty_fd;
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,26 @@
+/* Set the controlling terminal option.
+ Copyright (C) 2021 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 <spawn.h>
+
+int
+posix_spawnattr_tcsetpgrp_np (posix_spawnattr_t *attr, int fd)
+{
+ attr->__ctty_fd = fd;
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,173 @@
+/* Check posix_spawn set controlling terminal extension.
+ Copyright (C) 2021 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 <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <intprops.h>
+#include <paths.h>
+#include <spawn.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/wait.h>
+
+static int
+handle_restart (const char *argv1)
+{
+ int fd = xopen (_PATH_TTY, O_RDONLY, 0600);
+
+ /* If process group is not changed (POSIX_SPAWN_SETPGROUP), then check
+ the creating process one, otherwise check against the process group
+ itself. */
+ pid_t pgrp;
+ if (strcmp (argv1, "setgrpr") != 0)
+ TEST_COMPARE (sscanf (argv1, "%d", &pgrp), 1);
+ else
+ {
+ pgrp = getpgrp ();
+ /* Check if a new process group was actually created. */
+ pid_t ppid = getppid ();
+ pid_t pgid = getpgid (ppid);
+ TEST_VERIFY (pgid != pgrp);
+ }
+
+ TEST_COMPARE (tcgetpgrp (fd), pgrp);
+
+ xclose (fd);
+ return 0;
+}
+
+static int restart;
+#define CMDLINE_OPTIONS \
+ { "restart", no_argument, &restart, 1 },
+
+static void
+run_subprogram (int argc, char *argv[], const posix_spawnattr_t *attr,
+ int exp_err)
+{
+ short int flags;
+ TEST_COMPARE (posix_spawnattr_getflags (attr, &flags), 0);
+ bool setpgrp = flags & POSIX_SPAWN_SETPGROUP;
+
+ char *spargv[9];
+ char pgrp[INT_STRLEN_BOUND (pid_t)];
+
+ int i = 0;
+ for (; i < argc - 1; i++)
+ spargv[i] = argv[i + 1];
+ spargv[i++] = (char *) "--direct";
+ spargv[i++] = (char *) "--restart";
+ if (setpgrp)
+ spargv[i++] = (char *) "setgrpr";
+ else
+ {
+ snprintf (pgrp, sizeof pgrp, "%d", getpgrp ());
+ spargv[i++] = pgrp;
+ }
+ spargv[i] = NULL;
+
+ pid_t pid;
+ TEST_COMPARE (posix_spawn (&pid, argv[1], NULL, attr, spargv, environ),
+ exp_err);
+ if (exp_err != 0)
+ return;
+
+ int status;
+ TEST_COMPARE (xwaitpid (pid, &status, WUNTRACED), pid);
+ TEST_VERIFY (WIFEXITED (status));
+ TEST_VERIFY (!WIFSTOPPED (status));
+ TEST_VERIFY (!WIFSIGNALED (status));
+ TEST_COMPARE (WEXITSTATUS (status), 0);
+}
+
+static int
+do_test (int argc, char *argv[])
+{
+ /* We must have either:
+ - One our fource parameters left if called initially:
+ + path to ld.so optional
+ + "--library-path" optional
+ + the library path optional
+ + the application name
+ - six parameters left if called through re-execution:
+ + --setgrpr optional
+ */
+
+ if (restart)
+ return handle_restart (argv[1]);
+
+ int tcfd = xopen (_PATH_TTY, O_RDONLY, 0600);
+
+ /* Check getters and setters. */
+ {
+ posix_spawnattr_t attr;
+ TEST_COMPARE (posix_spawnattr_init (&attr), 0);
+ TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
+
+ int fd;
+ TEST_COMPARE (posix_spawnattr_tcgetpgrp_np (&attr, &fd), 0);
+ TEST_COMPARE (tcfd, fd);
+ }
+
+ /* Check setting the controlling terminal without changing the group. */
+ {
+ posix_spawnattr_t attr;
+ TEST_COMPARE (posix_spawnattr_init (&attr), 0);
+ TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP),
+ 0);
+ TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
+
+ run_subprogram (argc, argv, &attr, 0);
+ }
+
+ /* Check setting both the controlling terminal and the create a new process
+ group. */
+ {
+ posix_spawnattr_t attr;
+ TEST_COMPARE (posix_spawnattr_init (&attr), 0);
+ TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
+ | POSIX_SPAWN_SETPGROUP),
+ 0);
+ TEST_COMPARE (posix_spawnattr_setpgroup (&attr, 0), 0);
+ TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
+
+ run_subprogram (argc, argv, &attr, 0);
+ }
+
+ /* Trying to set the controlling terminal after a setsid() incurs in a ENOTTY
+ from tcsetpgrp. */
+ {
+ posix_spawnattr_t attr;
+ TEST_COMPARE (posix_spawnattr_init (&attr), 0);
+ TEST_COMPARE (posix_spawnattr_setflags (&attr, POSIX_SPAWN_TCSETPGROUP
+ | POSIX_SPAWN_SETSID), 0);
+ TEST_COMPARE (posix_spawnattr_tcsetpgrp_np (&attr, tcfd), 0);
+
+ run_subprogram (argc, argv, &attr, ENOTTY);
+ }
+
+ xclose (tcfd);
+
+ return 0;
+}
+
+#define TEST_FUNCTION_ARGV do_test
+#include <support/test-driver.c>
deleted file mode 100644
@@ -390,6 +390,19 @@ retry:
if (!err && (flags & POSIX_SPAWN_SETPGROUP) != 0)
err = __proc_setpgrp (proc, new_pid, attrp->__pgrp);
+ /* Set the controlling terminal. */
+ if (!err && (flags & POSIX_SPAWN_TCSETPGROUP) != 0)
+ {
+ pid_t pgrp;
+ /* Check if it is possible to avoid an extra syscall. */
+ if ((attrp->__flags & POSIX_SPAWN_SETPGROUP) != 0 && attrp->__pgrp != 0)
+ pgrp = attrp->__pgrp;
+ else
+ err = __proc_getpgrp (proc, new_pid, &pgrp);
+ if (!err)
+ err = __tcsetpgrp (attrp->__ctty_fd, pgrp);
+ }
+
/* Set the effective user and group IDs. */
if (!err && (flags & POSIX_SPAWN_RESETIDS) != 0)
{
deleted file mode 100644
@@ -22,7 +22,9 @@
/* Set the foreground process group ID of FD set PGRP_ID. */
int
-tcsetpgrp (int fd, pid_t pgrp_id)
+__tcsetpgrp (int fd, pid_t pgrp_id)
{
return __ioctl (fd, TIOCSPGRP, &pgrp_id);
}
+weak_alias (__tcsetpgrp, tcsetpgrp)
+libc_hidden_def (__tcsetpgrp)
@@ -2614,3 +2614,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2711,6 +2711,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2375,3 +2375,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -493,6 +493,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
@@ -490,6 +490,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
@@ -2649,3 +2649,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2598,6 +2598,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2782,6 +2782,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2549,6 +2549,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -494,6 +494,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0x98
GLIBC_2.4 _IO_2_1_stdin_ D 0x98
@@ -2725,6 +2725,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2698,3 +2698,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2695,3 +2695,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2690,6 +2690,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2688,6 +2688,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2696,6 +2696,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2600,6 +2600,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2737,3 +2737,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -1394,6 +1394,8 @@ GLIBC_2.35 posix_spawnattr_setschedparam F
GLIBC_2.35 posix_spawnattr_setschedpolicy F
GLIBC_2.35 posix_spawnattr_setsigdefault F
GLIBC_2.35 posix_spawnattr_setsigmask F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.35 posix_spawnp F
GLIBC_2.35 ppoll F
GLIBC_2.35 prctl F
@@ -2752,6 +2752,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2785,6 +2785,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2508,6 +2508,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2810,3 +2810,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2377,3 +2377,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2577,3 +2577,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -2750,6 +2750,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2545,6 +2545,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2605,6 +2605,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2602,6 +2602,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2745,6 +2745,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F
@@ -2572,6 +2572,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -164,6 +164,17 @@ __spawni_child (void *arguments)
&& __setpgid (0, attr->__pgrp) != 0)
goto fail;
+ /* Set the controlling terminal. */
+ if ((attr->__flags & POSIX_SPAWN_TCSETPGROUP) != 0)
+ {
+ /* Check if it is possible to avoid an extra syscall. */
+ pid_t pgrp = (attr->__flags & POSIX_SPAWN_SETPGROUP) != 0
+ && attr->__pgrp != 0
+ ? attr->__pgrp : __getpgid (0);
+ if (__tcsetpgrp (attr->__ctty_fd, pgrp) != 0)
+ goto fail;
+ }
+
/* Set the effective user and group IDs. */
if ((attr->__flags & POSIX_SPAWN_RESETIDS) != 0
&& (local_seteuid (__getuid ()) != 0
@@ -17,7 +17,7 @@ getpid - getpid Ei: __getpid getpid
getegid - getegid Ei: __getegid getegid
geteuid - geteuid Ei: __geteuid geteuid
getpgid - getpgid i:i __getpgid getpgid
-getpgrp - getpgrp Ei: getpgrp
+getpgrp - getpgrp Ei: __getpgrp getpgrp
getppid - getppid Ei: __getppid getppid
getresuid - getresuid i:ppp getresuid
getresgid - getresgid i:ppp getresgid
@@ -2523,6 +2523,8 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F
@@ -2629,3 +2629,5 @@ GLIBC_2.34 tss_get F
GLIBC_2.34 tss_set F
GLIBC_2.35 __memcmpeq F
GLIBC_2.35 _dl_find_object F
+GLIBC_2.35 posix_spawnattr_tcgetpgrp_np F
+GLIBC_2.35 posix_spawnattr_tcsetpgrp_np F
@@ -21,7 +21,7 @@
/* Set the foreground process group ID of FD set PGRP_ID. */
int
-tcsetpgrp (int fd, pid_t pgrp_id)
+__tcsetpgrp (int fd, pid_t pgrp_id)
{
if (fd < 0)
{
@@ -32,6 +32,7 @@ tcsetpgrp (int fd, pid_t pgrp_id)
__set_errno (ENOSYS);
return -1;
}
-
+weak_alias (__tcsetpgrp, tcsetpgrp);
+libc_hidden_def (__tcsetpgrp)
stub_warning (tcsetpgrp)