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Tue, 9 Dec 2025 17:31:27 +0000 (UTC) Received: from fweimer-oldenburg.csb.redhat.com (unknown [10.45.226.70]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9108C180045B for ; Tue, 9 Dec 2025 17:31:26 +0000 (UTC) From: Florian Weimer To: libc-alpha@sourceware.org Subject: [PATCH 3/5] Linux: Implement per-thread file system attributes In-Reply-To: Message-ID: References: X-From-Line: c15eb732d9b1ebdfd7070e4c8a77977ace9aa70c Mon Sep 17 00:00:00 2001 Date: Tue, 09 Dec 2025 18:31:23 +0100 User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 9pCnx4Hr6o8R8aTNMJTB09sdsRQKYgySOcFKMcPShls_1765301487 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-10.8 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, RCVD_IN_VALIDITY_RPBL_BLOCKED, RCVD_IN_VALIDITY_SAFE_BLOCKED, SPF_HELO_PASS, SPF_NONE, TXREP, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libc-alpha-bounces~patchwork=sourceware.org@sourceware.org This commit adds the functions pthread_attr_setperthreadfs_np and pthread_attr_getperthreadfs_np. The implementation is based on suppressing the CLONE_FS clone flag when creating the new thread. The new flag is sticky and is applied to all threads created from a thread with the PTHREAD_PER_THREAD_NP attribute. --- NEWS | 5 + manual/threads.texi | 95 ++++++ nptl/Makefile | 4 + nptl/Versions | 2 + nptl/pthread_attr_getperthreadfs_np.c | 32 ++ nptl/pthread_attr_setperthreadfs_np.c | 39 +++ nptl/pthread_create.c | 20 +- nptl/tst-pthread-perthreadfs-chroot.c | 255 ++++++++++++++ nptl/tst-pthread-perthreadfs.c | 322 ++++++++++++++++++ sysdeps/nptl/internaltypes.h | 12 + sysdeps/nptl/pthread.h | 26 +- 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 + .../sysv/linux/loongarch/lp64/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/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 + .../unix/sysv/linux/x86_64/64/libc.abilist | 2 + .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 + 43 files changed, 867 insertions(+), 9 deletions(-) create mode 100644 nptl/pthread_attr_getperthreadfs_np.c create mode 100644 nptl/pthread_attr_setperthreadfs_np.c create mode 100644 nptl/tst-pthread-perthreadfs-chroot.c create mode 100644 nptl/tst-pthread-perthreadfs.c diff --git a/NEWS b/NEWS index 6964ca074e..1bd9f8b795 100644 --- a/NEWS +++ b/NEWS @@ -58,6 +58,11 @@ Major new features: openat and provides a superset of its functionality. It is supported only in LFS mode and it is a cancellable entrypoint. +* On Linux, it is now possible to create threads with per-thread current + directory, umask, and file system root. The functions + pthread_attr_setperthreadfs_np and pthread_attr_getperthreadfs_np have + been added in support of that. + Deprecated and removed features, and other changes affecting compatibility: * Support for dumped heaps has been removed - malloc_set_state() now always diff --git a/manual/threads.texi b/manual/threads.texi index b9d12479ca..8df694cc43 100644 --- a/manual/threads.texi +++ b/manual/threads.texi @@ -1145,6 +1145,7 @@ the standard. * Default Thread Attributes:: Setting default attributes for threads in a process. * Initial Thread Signal Mask:: Setting the initial mask of threads. +* Enabling Per-Thread Properties:: Additional per-thread properties. * Thread CPU Affinity:: Limiting which CPUs can run a thread. * Joining Threads:: Wait for a thread to terminate. * Thread Names:: Changing the name of a thread. @@ -1266,6 +1267,100 @@ signal mask and use @code{pthread_sigmask} to apply it to the thread. If the signal mask was copied to a heap allocation, the copy should be freed. +@node Enabling Per-Thread Properties +@subsubsection Enabling Additional Per-Thread Properties + +POSIX mandates that the current directory, file system root, umask +value, and the current user and group IDs are process-global +properties. For example, if a thread calls the @code{chdir} function +to change to a different directory, all threads are eventually +affected by this change. @Theglibc{} implements an extension which +allows threads to be created which do not share these properties with +the rest of the process. + +The desired behavior is specified at the time the thread is created, +using the thread attribute. The following constants are used to +update the attribute: + +@vtable @code +@item PTHREAD_PER_PROCESS_NP +@standards{GNU, pthread.h} +This property in question is globally shared across the entire process. +This is the default. + +@item PTHREAD_PER_THREAD_NP +@standards{GNU, pthread.h} +This property in question is thread-specific. +@end vtable + +The @code{PTHREAD_PER_THREAD_NP} flag is sticky, in the sense that all +threads created by a thread created with this flag have per-thread +properties, even if they are created with the matching thread +attribute set to the @code{PTHREAD_PER_PROCESS_NP} flag. If an +application wants to create new threads sharing properties with the +main thread, it should create a service thread early (perhaps from an +ELF constructor) and create these threads using this service thread. + +Per-thread properties can be set and examined for an attribute using +the functions below. + +@deftypefun int pthread_attr_setperthreadfs_np (pthread_attr_t *@var{attr}, int @var{scope}) +@standards{GNU, pthread.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Change whether the following properties related to file system access +are made thread-specific when a new thread is created using the +attribute @var{attr}: + +@itemize @bullet +@item +@cindex current directory as a per-thread property +@cindex per-thread current directory +@cindex thread-specific current directory +current directory (as changed by @code{chdir} and related functions) + +@item +@cindex @code{chroot} as a per-thread property +@cindex per-thread @code{chroot} +@cindex thread-specific @code{chroot} +file system root (as changed by @code{chroot}) + +@item +@cindex umask as a per-thread property +@cindex per-thread @code{umask} +@cindex thread-specific @code{umask} +umask value (as changed by the function of the same name) +@end itemize + +This function returns zero on success. @var{scope} must be one of the +constants @code{PTHREAD_PER_PROCESS_NP} or +@code{PTHREAD_PER_THREAD_NP}, otherwise the function returns +@code{EINVAL}. + +If @var{scope} is @code{PTHREAD_PER_THREAD_NP}, the attribute will +cause the properties listed above to be specific to the thread. The +initial values of these properties are copied from the creating +thread, at thread creation time. + +If a thread that has been created with the +@code{PTHREAD_PER_THREAD_NP} flag creates further threads, these +threads are implicitly created with the @code{PTHREAD_PER_THREAD_NP} +flag, ignoring the value of this thread creation attribute. +(If this behavior is not desirable, it is possible to call +@samp{unshare (CLONE_FS)} from the new thread instead of creating it +with the @code{PTHREAD_PER_THREAD_NP} flag.) + +This function is a GNU extension and specific to Linux. +@end deftypefun + +@deftypefun int pthread_attr_getperthreadfs_np (pthread_attr_t *restrict @var{attr}, int *restrict @var{scope}) +@standards{GNU, pthread.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +Obtain the per-thread status of the file system properties in +@var{attr} and store it in the location @var{scope}. + +This function is a GNU extension and specific to Linux. +@end deftypefun + @node Thread CPU Affinity @subsubsection Thread CPU Affinity diff --git a/nptl/Makefile b/nptl/Makefile index 81d6a5482c..05c6c32a76 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -65,6 +65,7 @@ routines = \ pthread_attr_getdetachstate \ pthread_attr_getguardsize \ pthread_attr_getinheritsched \ + pthread_attr_getperthreadfs_np \ pthread_attr_getschedparam \ pthread_attr_getschedpolicy \ pthread_attr_getscope \ @@ -77,6 +78,7 @@ routines = \ pthread_attr_setdetachstate \ pthread_attr_setguardsize \ pthread_attr_setinheritsched \ + pthread_attr_setperthreadfs_np \ pthread_attr_setschedparam \ pthread_attr_setschedpolicy \ pthread_attr_setscope \ @@ -317,6 +319,8 @@ tests = \ tst-pthread-gdb-attach-static \ tst-pthread-getcpuclockid-invalid \ tst-pthread-key1-static \ + tst-pthread-perthreadfs \ + tst-pthread-perthreadfs-chroot \ tst-pthread-timedlock-lockloop \ tst-pthread_exit-nothreads \ tst-pthread_exit-nothreads-static \ diff --git a/nptl/Versions b/nptl/Versions index b813b675b9..c4ff312468 100644 --- a/nptl/Versions +++ b/nptl/Versions @@ -382,6 +382,8 @@ libc { pthread_gettid_np; } GLIBC_2.43 { + pthread_attr_setperthreadfs_np; + pthread_attr_getperthreadfs_np; } GLIBC_PRIVATE { __libc_alloca_cutoff; diff --git a/nptl/pthread_attr_getperthreadfs_np.c b/nptl/pthread_attr_getperthreadfs_np.c new file mode 100644 index 0000000000..f5ff348cac --- /dev/null +++ b/nptl/pthread_attr_getperthreadfs_np.c @@ -0,0 +1,32 @@ +/* Read the private file system flag in thread attributes. + Copyright (C) 2025 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 + . */ + +#include +#include + +int +pthread_attr_getperthreadfs_np (const pthread_attr_t *__restrict attr, + int *__restrict scope) +{ + struct pthread_attr *iattr = (struct pthread_attr *) attr; + if (iattr->flags & ATTR_FLAG_PERTHREADFS) + *scope = PTHREAD_PER_THREAD_NP; + else + *scope = PTHREAD_PER_PROCESS_NP; + return 0; +} diff --git a/nptl/pthread_attr_setperthreadfs_np.c b/nptl/pthread_attr_setperthreadfs_np.c new file mode 100644 index 0000000000..2d274cb144 --- /dev/null +++ b/nptl/pthread_attr_setperthreadfs_np.c @@ -0,0 +1,39 @@ +/* Change the private file system flag in thread attributes. + Copyright (C) 2025 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 + . */ + +#include +#include +#include + +int +pthread_attr_setperthreadfs_np (pthread_attr_t *attr, int scope) +{ + struct pthread_attr *iattr = (struct pthread_attr *) attr; + switch (scope) + { + case PTHREAD_PER_PROCESS_NP: + iattr->flags &= ~ATTR_FLAG_PERTHREADFS; + return 0; + break; + case PTHREAD_PER_THREAD_NP: + iattr->flags |= ATTR_FLAG_PERTHREADFS; + return 0; + default: + return EINVAL; + } +} diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index 19e4ec8064..39a4cf825f 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -253,7 +253,9 @@ static int create_thread (struct pthread *pd, const struct pthread_attr *attr, CLONE_VM, CLONE_FS, CLONE_FILES These flags select semantics with shared address space and - file descriptors according to what POSIX requires. + file descriptors according to what POSIX requires. CLONE_FS + is optional; it can be controlled using the function + pthread_attr_setperthreadfs_np. CLONE_SIGHAND, CLONE_THREAD This flag selects the POSIX signal semantics and various @@ -277,11 +279,13 @@ static int create_thread (struct pthread *pd, const struct pthread_attr *attr, The termination signal is chosen to be zero which means no signal is sent. */ - const int clone_flags = (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SYSVSEM - | CLONE_SIGHAND | CLONE_THREAD - | CLONE_SETTLS | CLONE_PARENT_SETTID - | CLONE_CHILD_CLEARTID - | 0); + int clone_flags = (CLONE_VM | CLONE_FILES | CLONE_SYSVSEM + | CLONE_SIGHAND | CLONE_THREAD + | CLONE_SETTLS | CLONE_PARENT_SETTID + | CLONE_CHILD_CLEARTID + | 0); + if ((attr->flags & ATTR_FLAG_PERTHREADFS) == 0) + clone_flags |= CLONE_FS; TLS_DEFINE_INIT_TP (tp, pd); @@ -695,8 +699,8 @@ __pthread_create_2_1 (pthread_t *newthread, const pthread_attr_t *attr, /* Copy the thread attribute flags. */ struct pthread *self = THREAD_SELF; - pd->flags = ((iattr->flags & ~(ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET)) - | (self->flags & (ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET))); + pd->flags = ((iattr->flags & ~ATTR_FLAGS_IGNORED_ATTR) + | (self->flags & ATTR_FLAGS_INHERITED)); /* Inherit rseq registration state. Without seccomp filters, rseq registration will either always fail or always succeed. */ diff --git a/nptl/tst-pthread-perthreadfs-chroot.c b/nptl/tst-pthread-perthreadfs-chroot.c new file mode 100644 index 0000000000..094c291baa --- /dev/null +++ b/nptl/tst-pthread-perthreadfs-chroot.c @@ -0,0 +1,255 @@ +/* Test per-thread file system attributes, chroot version. + Copyright (C) 2025 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 + . */ + +/* This thread is separate from tst-pthread-perthreadfs because it + requires chroot support. */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Paths for chroot operations. */ +static char *chroot_1; +static char *chroot_2; +static char *chroot_3; + +/* These paths are used for recognizing chroots. */ +static const char *const chroot_1_marker = "/chroot-1-marker"; +static const char *const chroot_2_marker = "/chroot-2-marker"; + +/* Directory available in the chroot for a second chroot call. */ +static const char *const next_chroot = "/next_chroot"; + +/* Return 0 for no chroot, 1 for first chroot, 2 for second chroot, or + -1 for error. */ +static int +which_chroot (void) +{ + /* If the full (out-of-chroot) path is present, we are not in a + chroot. */ + if (access (chroot_1, F_OK) == 0) + return 0; + if (access (chroot_1_marker, F_OK) == 0) + return 1; + if (access (chroot_2_marker, F_OK) == 0) + return 2; + return -1; +} + +/* Thread attribute requesting per-thread file system attributes. */ +pthread_attr_t attr_perthreadfs; + +/* Used to synchronize operations among the threads. This is needed + so that the chroot changes happen in the expected order. */ +static pthread_barrier_t barrier; + +static void * +thread_which_chroot_helper (void *closure) +{ + int *result = closure; + *result = which_chroot (); + return NULL; +} + +static void * +thread_which_chroot_helper_perthread (void *closure) +{ + int *result = closure; + *result = which_chroot (); + if (*result == 0) + /* No /next-chroot available without a first chroot. */ + xchroot (chroot_3); + else + xchroot (next_chroot); + return NULL; +} + +/* Determine the current chroot on another thread. */ +static int +thread_which_chroot (void) +{ + int result1; + pthread_t thr = xpthread_create (NULL, thread_which_chroot_helper, &result1); + xpthread_join (thr); + /* Same using per-thread attributes. They are supposed to be equal. + Also change the chroot to check isolation. */ + int result2; + thr = xpthread_create (&attr_perthreadfs, + thread_which_chroot_helper_perthread, &result2); + xpthread_join (thr); + TEST_COMPARE (result1, result2); + return result1; +} + +/* Verify that the file system attributes for the current thread are + as expected. */ +static void +check_attributes (const char *where, int expected_chroot) +{ + printf ("info: reading file attributes in %s\n", where); + TEST_COMPARE (which_chroot (), expected_chroot); + TEST_COMPARE (thread_which_chroot (), expected_chroot); +} + +/* Thread function launched with per-thread file system + attributes. */ +static void * +thread_perthreadfs (void *closure) +{ + puts ("info: changing file attributes in thread_perthreadfs"); + xchroot (chroot_1); + check_attributes ("thread_perthreadfs", 1); + + pthread_barrier_wait (&barrier); + /* File attributes read in thread_sharedfs here. */ + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + /* File attributes changed in thread_sharedfs here. */ + pthread_barrier_wait (&barrier); + + check_attributes ("thread_perthreadfs", 1); + + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + return NULL; +} + +/* Thread function launched with shared file system attributes. */ +static void * +thread_sharedfs (void *closure) +{ + /* Wait for thread_perthreadfs to update chroot. */ + pthread_barrier_wait (&barrier); + + check_attributes ("thread_sharedfs", 0); + + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + + puts ("info: changing file attributes in thread_sharedfs"); + xchroot (chroot_2); + check_attributes ("thread_sharedfs", 2); + + pthread_barrier_wait (&barrier); + /* File attributes read in thread_perthreadfs here. */ + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + return NULL; +} + +static int +do_test (void) +{ + support_become_root (); + if (!support_can_chroot ()) + FAIL_UNSUPPORTED ("chroot not supported"); + + /* Used to revert the effect of chroot. */ + int original_chroot_fd = xopen ("/", O_DIRECTORY | O_RDONLY, 0); + + TEST_COMPARE (access (chroot_1_marker, F_OK), -1); + TEST_COMPARE (access (chroot_2_marker, F_OK), -1); + TEST_COMPARE (access (next_chroot, F_OK), -1); + + chroot_1 = support_create_temp_directory + ("tst-pthread-perthreadfs-chroot-1-"); + chroot_2 = support_create_temp_directory + ("tst-pthread-perthreadfs-chroot-2-"); + chroot_3 = support_create_temp_directory + ("tst-pthread-perthreadfs-chroot-3-"); + { + char *path = xasprintf ("%s%s", chroot_1, chroot_1_marker); + xmkdir (path, 0777); + add_temp_file (path); + free (path); + + path = xasprintf ("%s%s", chroot_1, next_chroot); + xmkdir (path, 0777); + add_temp_file (path); + free (path); + + path = xasprintf ("%s%s", chroot_2, chroot_2_marker); + xmkdir (path, 0777); + add_temp_file (path); + free (path); + + path = xasprintf ("%s%s", chroot_2, next_chroot); + xmkdir (path, 0777); + add_temp_file (path); + free (path); + } + TEST_COMPARE (which_chroot (), 0); + + xpthread_barrier_init (&barrier, NULL, 3); + xpthread_attr_init (&attr_perthreadfs); + TEST_COMPARE (pthread_attr_setperthreadfs_np (&attr_perthreadfs, + PTHREAD_PER_THREAD_NP), 0); + + pthread_t thr1 = xpthread_create (&attr_perthreadfs, + thread_perthreadfs, NULL); + pthread_t thr2 = xpthread_create (NULL, thread_sharedfs, NULL); + + /* Wait for thread_perthreadfs to update chroot. */ + xpthread_barrier_wait (&barrier); + /* File attributes read thread_sharedfs here. */ + xpthread_barrier_wait (&barrier); + + check_attributes ("main thread", 0); + + xpthread_barrier_wait (&barrier); + /* File attributes changed thread_sharedfs here. */ + xpthread_barrier_wait (&barrier); + /* File attributes read in thread_perthreadfs here. */ + xpthread_barrier_wait (&barrier); + + check_attributes ("main thread", 2); + + xpthread_barrier_wait (&barrier); + + xpthread_join (thr2); + xpthread_join (thr1); + + xpthread_attr_destroy (&attr_perthreadfs); + xpthread_barrier_destroy (&barrier); + + free (chroot_3); + free (chroot_2); + free (chroot_1); + + xfchdir (original_chroot_fd); + xclose (original_chroot_fd); + xchroot ("."); + + return 0; +} + +#include diff --git a/nptl/tst-pthread-perthreadfs.c b/nptl/tst-pthread-perthreadfs.c new file mode 100644 index 0000000000..bb30449808 --- /dev/null +++ b/nptl/tst-pthread-perthreadfs.c @@ -0,0 +1,322 @@ +/* Test per-thread file system attributes. + Copyright (C) 2025 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 + . */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Original values in the parent process. */ +static char *original_cwd; +static mode_t original_umask; + +/* New values for the attributes, distinct from the old. */ +static char *new_cwd_1; +static char *new_cwd_2; +static mode_t new_umask_1; +static mode_t new_umask_2; + +/* Thread attribute requesting per-thread file system attributes. */ +pthread_attr_t attr_perthreadfs; + +/* Used to synchronize operations among the threads. This is needed + so that the attribute changes happen in the expected order, and + that get_umask_unlocked can be used safely. */ +static pthread_barrier_t barrier; + +/* Return true if the thread has per-thread file system attributes. + Note: This function calls pthread_getattr_np on THR, so the caller + has to ensure that the thread is still running (and not merely + joinable). */ +static bool +perthread_flag (pthread_t thr) +{ + pthread_attr_t attr; + int ret = pthread_getattr_np (thr, &attr); + if (ret != 0) + { + errno = ret; + FAIL_EXIT1 ("pthread_getattr_np: %m"); + } + int flag = -1; + pthread_attr_getperthreadfs_np (&attr, &flag); + if (flag != PTHREAD_PER_THREAD_NP) + TEST_COMPARE (flag, PTHREAD_PER_PROCESS_NP); + xpthread_attr_destroy (&attr); + return flag == PTHREAD_PER_THREAD_NP; +} + +/* Linux does not have getumask, so use synchronization and the umask + system call to read the value. */ +static mode_t +get_umask_unlocked (void) +{ + mode_t mask = umask (0); + TEST_COMPARE (umask (mask), 0); + return mask; +} + +static void * +thread_get_pwd_helper (void *closure) +{ + char *result = get_current_dir_name (); + if (closure != NULL) + xchdir (closure); + return result; +} + +/* Obtain the current directory on another thread. */ +static char * +thread_get_pwd (void) +{ + pthread_t thr = xpthread_create (NULL, thread_get_pwd_helper, NULL); + char *path1 = xpthread_join (thr); + /* Same using per-thread attributes. They are supposed to be equal. + Also change the current directory to check isolation. */ + thr = xpthread_create (&attr_perthreadfs, + thread_get_pwd_helper, (char *) "/"); + char *path2 = xpthread_join (thr); + TEST_COMPARE_STRING (path1, path2); + free (path2); + return path1; +} + +static void * +thread_get_umask_helper (void *closure) +{ + mode_t *pmask = closure; + *pmask = get_umask_unlocked (); + return NULL; +} + +static void * +thread_get_umask_helper_perthread (void *closure) +{ + mode_t *pmask = closure; + *pmask = get_umask_unlocked (); + /* Check isolation. This bit pattern is not used anywhere else. */ + TEST_COMPARE (umask (*pmask ^ 0101), *pmask); + return NULL; +} + +/* Obtain the current umask on another thread. */ +static mode_t +thread_get_umask_unlocked (void) +{ + mode_t mask1; + pthread_t thr = xpthread_create (NULL, thread_get_umask_helper, &mask1); + xpthread_join (thr); + mode_t mask2; + thr = xpthread_create (&attr_perthreadfs, + thread_get_umask_helper_perthread, &mask2); + xpthread_join (thr); + TEST_COMPARE (mask1, mask2); + return mask1; +} + +/* Verify that the file system attributes for the current thread are + as expected. */ +static void +check_attributes (const char *where, mode_t expected_umask, + const char *expected_cwd) +{ + printf ("info: reading file attributes in %s\n", where); + TEST_COMPARE (get_umask_unlocked (), expected_umask); + TEST_COMPARE (thread_get_umask_unlocked (), expected_umask); + char *cwd = get_current_dir_name (); + TEST_COMPARE_STRING (cwd, expected_cwd); + free (cwd); + cwd = thread_get_pwd (); + TEST_COMPARE_STRING (cwd, expected_cwd); + free (cwd); +} + +/* Thread function launched with per-thread file system + attributes. */ +static void * +thread_perthreadfs (void *closure) +{ + puts ("info: changing file attributes in thread_perthreadfs"); + TEST_VERIFY (perthread_flag (pthread_self ())); + xchdir (new_cwd_1); + TEST_COMPARE (umask (new_umask_1), original_umask); + check_attributes ("thread_perthreadfs", new_umask_1, new_cwd_1); + + pthread_barrier_wait (&barrier); + /* File attributes read in thread_sharedfs here. */ + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + /* File attributes changed in thread_sharedfs here. */ + pthread_barrier_wait (&barrier); + + check_attributes ("thread_perthreadfs", new_umask_1, new_cwd_1); + + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + return NULL; +} + +/* Launched with PTHREAD_PER_THREAD_NP, but runs the actual test on a + PTHREAD_PER_PROCESS_NP thread (with a default attribute). */ +static void * +thread_perthreadfs_indirect (void *closure) +{ + TEST_VERIFY (perthread_flag (pthread_self ())); + /* Use the default NULL attribute here. Since the per-thread scope + is sticky, it will still result in a per-thread file system + thread. */ + pthread_t thr = xpthread_create (NULL, thread_perthreadfs, closure); + return xpthread_join (thr); +} + +/* Thread function launched with shared file system attributes. */ +static void * +thread_sharedfs (void *closure) +{ + TEST_VERIFY (!perthread_flag (pthread_self ())); + + /* Wait for thread_perthreadfs to update current directory and + umask. */ + pthread_barrier_wait (&barrier); + + check_attributes ("thread_sharedfs", original_umask, original_cwd); + + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + + puts ("info: changing file attributes in thread_sharedfs"); + TEST_COMPARE (umask (new_umask_2), original_umask); + xchdir (new_cwd_2); + check_attributes ("thread_sharedfs", new_umask_2, new_cwd_2); + + pthread_barrier_wait (&barrier); + /* File attributes read in thread_perthreadfs here. */ + pthread_barrier_wait (&barrier); + /* File attributes read in main thread here. */ + pthread_barrier_wait (&barrier); + return NULL; +} + +static int +do_test (void) +{ + original_cwd = get_current_dir_name (); + TEST_VERIFY_EXIT (original_cwd != NULL); + original_umask = get_umask_unlocked (); + + new_cwd_1 = support_create_temp_directory ("tst-pthread-perthreadfs-1-"); + new_cwd_2 = support_create_temp_directory ("tst-pthread-perthreadfs-2-"); + /* Arbitrary bit pattern change to obtain distinct values, so that + it is possible to check for actual changes. */ + new_umask_1 = original_umask ^ 0111; + new_umask_2 = original_umask ^ 0222; + + TEST_VERIFY (!perthread_flag (pthread_self ())); + + xpthread_barrier_init (&barrier, NULL, 3); + xpthread_attr_init (&attr_perthreadfs); + { + /* Test: Default is PTHREAD_PER_PROCESS_NP. */ + int scope = -1; + TEST_COMPARE (pthread_attr_getperthreadfs_np (&attr_perthreadfs, &scope), + 0); + TEST_COMPARE (scope, PTHREAD_PER_PROCESS_NP); + + /* Test: The getter shows the effect of the setter. */ + TEST_COMPARE (pthread_attr_setperthreadfs_np (&attr_perthreadfs, + PTHREAD_PER_THREAD_NP), 0); + scope = -1; + TEST_COMPARE (pthread_attr_getperthreadfs_np (&attr_perthreadfs, &scope), + 0); + TEST_COMPARE (scope, PTHREAD_PER_THREAD_NP); + + /* Test: Invalid scope values result in an error, without a + change. */ + TEST_COMPARE (pthread_attr_setperthreadfs_np (&attr_perthreadfs, 2), + EINVAL); + scope = -1; + TEST_COMPARE (pthread_attr_getperthreadfs_np (&attr_perthreadfs, &scope), + 0); + TEST_COMPARE (scope, PTHREAD_PER_THREAD_NP); + } + + /* Two test runs, once with perthreadsfs set to + PTHREAD_PER_THREAD_NP directly, once indirectly via inheritance + from the current (overriding the PTHREAD_PER_PROCESS_NP + default). */ + for (int do_indirect = 0; do_indirect < 2; ++do_indirect) + { + printf ("info: test iteration with do_indirect == %d\n", do_indirect); + pthread_t thr1; + if (do_indirect) + thr1 = xpthread_create (&attr_perthreadfs, + thread_perthreadfs_indirect, NULL); + else + thr1 = xpthread_create (&attr_perthreadfs, thread_perthreadfs, NULL); + pthread_t thr2 = xpthread_create (NULL, thread_sharedfs, NULL); + /* Both threads wait on the barrier before exiting, so they are + running at his point, and the call to perthread_flag is + safe. */ + TEST_VERIFY (perthread_flag (thr1)); + TEST_VERIFY (!perthread_flag (thr2)); + + /* Wait for thread_perthreadfs to update current directory and + umask. */ + xpthread_barrier_wait (&barrier); + /* File attributes read thread_sharedfs here. */ + xpthread_barrier_wait (&barrier); + + check_attributes ("main thread", original_umask, original_cwd); + + xpthread_barrier_wait (&barrier); + /* File attributes changed thread_sharedfs here. */ + xpthread_barrier_wait (&barrier); + /* File attributes read in thread_perthreadfs here. */ + xpthread_barrier_wait (&barrier); + + check_attributes ("main thread", new_umask_2, new_cwd_2); + + xpthread_barrier_wait (&barrier); + + xpthread_join (thr2); + xpthread_join (thr1); + + xchdir (original_cwd); + umask (original_umask); + } + + xpthread_attr_destroy (&attr_perthreadfs); + xpthread_barrier_destroy (&barrier); + + free (new_cwd_2); + free (new_cwd_1); + free (original_cwd); + return 0; +} + +#include diff --git a/sysdeps/nptl/internaltypes.h b/sysdeps/nptl/internaltypes.h index 9169453cc9..f291421dc2 100644 --- a/sysdeps/nptl/internaltypes.h +++ b/sysdeps/nptl/internaltypes.h @@ -51,6 +51,18 @@ struct pthread_attr #define ATTR_FLAG_SCHED_SET 0x0020 #define ATTR_FLAG_POLICY_SET 0x0040 #define ATTR_FLAG_DO_RSEQ 0x0080 +#define ATTR_FLAG_PERTHREADFS 0x0100 + +/* These flags are not copied from the thread attribute at + pthread_create time. */ +#define ATTR_FLAGS_IGNORED_ATTR \ + (ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET) + +/* These flags are inherited from the current thread during + pthread_create even if they are not specified in the thread + attribute. */ +#define ATTR_FLAGS_INHERITED \ + ATTR_FLAG_PERTHREADFS /* Used to allocate a pthread_attr_t object which is also accessed internally. */ diff --git a/sysdeps/nptl/pthread.h b/sysdeps/nptl/pthread.h index 92957a620d..d2280ddc73 100644 --- a/sysdeps/nptl/pthread.h +++ b/sysdeps/nptl/pthread.h @@ -149,7 +149,16 @@ enum #define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED }; - +#ifdef __USE_GNU +/* Thread-private or process-global flag. */ +enum +{ + PTHREAD_PER_PROCESS_NP, +# define PTHREAD_PER_PROCESS_NP PTHREAD_PER_PROCESS_NP + PTHREAD_PER_THREAD_NP +# define PTHREAD_PER_THREAD_NP PTHREAD_PER_THREAD_NP +}; +#endif /* __USE_GNU */ /* Conditional variable handling. */ #define PTHREAD_COND_INITIALIZER { { {0}, {0}, {0, 0}, 0, 0, {0, 0}, 0, 0 } } @@ -403,6 +412,21 @@ extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr, cpu_set_t *__cpuset) __THROW __nonnull ((1, 3)); + +/* Control the flag in ATTR whether the thread has its own current + directory, file system root, and umask attribute. SCOPE must be + PTHREAD_PER_PROCESS_NP or PTHREAD_PER_THREAD_NP. By default, new + threads share these attributes with their creating thread + (PTHREAD_PER_PROCESS_NP). */ +int pthread_attr_setperthreadfs_np (pthread_attr_t *__attr, int __scope) + __THROW __nonnull ((1)); + +/* Get the per-thread/per-process scope of file system attributes from + *ATTR and store it in *SCOPE. */ +int pthread_attr_getperthreadfs_np (const pthread_attr_t *__restrict __attr, + int *__restrict __scope) + __THROW __nonnull ((1, 2)); + /* Get the default attributes used by pthread_create in this process. */ extern int pthread_getattr_default_np (pthread_attr_t *__attr) __THROW __nonnull ((1)); diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist index 3156688add..abc893d3c2 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist @@ -2774,4 +2774,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist index 8af5b0b581..08ac8d8e1b 100644 --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist @@ -3121,6 +3121,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist index 35fcef2cc4..69f616cead 100644 --- a/sysdeps/unix/sysv/linux/arc/libc.abilist +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist @@ -2535,4 +2535,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist index a6c6b951bf..9d1678320e 100644 --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist @@ -2827,6 +2827,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist index e76015fe66..4f3b5affe9 100644 --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist @@ -2824,6 +2824,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist index 1fb7cdcad5..4775926d0d 100644 --- a/sysdeps/unix/sysv/linux/csky/libc.abilist +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist @@ -2811,4 +2811,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist index 0710ccecf9..d3b8ac7de6 100644 --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist @@ -2848,6 +2848,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist index 3afe3a88eb..7bf6d848df 100644 --- a/sysdeps/unix/sysv/linux/i386/libc.abilist +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist @@ -3031,6 +3031,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist index c2b3a66d3a..4438857731 100644 --- a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist +++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist @@ -2295,4 +2295,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist index d6855131e8..1ec5185e2a 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist @@ -2807,6 +2807,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist index 4e3fe9c42f..d091f52f10 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist @@ -2974,6 +2974,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist index 29f0c5f954..eda99f79cc 100644 --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist @@ -2860,4 +2860,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist index 2ef62838f7..28d85c9a69 100644 --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist @@ -2857,4 +2857,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index 031e8961ac..52c206e514 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -2937,6 +2937,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist index 8dc99d81b4..fa6b7532bd 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -2935,6 +2935,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist index 054c5b6391..c2a0b18359 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -2943,6 +2943,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist index 13f0148bc0..8c0e99fb18 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -2845,6 +2845,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist index e7ffe07dd8..1158bb10d6 100644 --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist @@ -2285,4 +2285,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index dea4b20f05..bf9faed11f 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -3164,6 +3164,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist index b45e127463..7dbe21ba65 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -3209,6 +3209,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist index 942cf6a027..8e8a179363 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist @@ -2918,6 +2918,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist index 65d78e5076..04fa4568bb 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist @@ -2994,4 +2994,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist index dcab30d72e..78d4f1f22f 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist @@ -2538,4 +2538,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist index 796ef35e26..ae0f2ccac9 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist @@ -2738,4 +2738,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist index 9bd9f5eb78..7b7c81a68b 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist @@ -3162,6 +3162,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist index 8f2350ee0b..7c81be27f4 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist @@ -2955,6 +2955,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist index 7aa98c5aed..f04f22b538 100644 --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist @@ -2854,6 +2854,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist index 6bd4f8f63a..ec831f0ad5 100644 --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist @@ -2851,6 +2851,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist index b52cab2a35..4f40e294fe 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist @@ -3185,6 +3185,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist index ff99cd4f21..da128a940a 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist @@ -2821,6 +2821,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist index 306cd627fd..3f32a83378 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist @@ -2770,6 +2770,8 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F GLIBC_2.5 __readlinkat_chk F GLIBC_2.5 inet6_opt_append F diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist index 8b9c448742..8105eaadba 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist @@ -2789,4 +2789,6 @@ GLIBC_2.43 memalignment F GLIBC_2.43 memset_explicit F GLIBC_2.43 mseal F GLIBC_2.43 openat2 F +GLIBC_2.43 pthread_attr_getperthreadfs_np F +GLIBC_2.43 pthread_attr_setperthreadfs_np F GLIBC_2.43 umaxabs F