diff options
40 files changed, 388 insertions, 9 deletions
diff --git a/ChangeLog b/ChangeLog index 20ff76ab62..78ea38a086 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,73 @@ +2019-01-31 Florian Weimer <fweimer@redhat.com> + + [BZ #6399] + Linux: Add gettid system call wrapper. + * posix/Makefile (headers): Add bits/unistd_ext.h. + * posix/bits/unistd_ext.h: New file. + * posix/unistd.h: Include it. + * manual/process.texi (Process Identification): Document gettid. + * sysdeps/unix/sysv/linux/Makefile [subdir == misc] (tests): Add + tst-gettid, tst-gettid-kill. + (tst-gettid): Link with $(shared-thread-library). + * sysdeps/unix/sysv/linux/Version (GLIBC_2.30): Export gettid. + * sysdeps/unix/sysv/linux/bits/unistd_ext.h: New file. + * sysdeps/unix/sysv/linux/bits/syscalls.list (gettid): Add. + * sysdeps/unix/sysv/linux/bits/tst-gettid.c: New file. + * sysdeps/unix/sysv/linux/bits/tst-gettid-kill.c: Likewise. + * sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.30): + Add gettid. + * sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/arm/libc.abilist (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/csky/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/hppa/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/i386/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/ia64/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/microblaze/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/nios2/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist + (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/sh/libc.abilist (GLIBC_2.30): Likewise. + * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist (GLIBC_2.30): + Likewise. + * sysdeps/unix/sysv/linux/tst-setgetname.c (gettid): Remove. + 2019-02-07 Florian Weimer <fweimer@redhat.com> * rt/clock-compat.c (COMPAT_REDIRECT): Turn librt forwarders into diff --git a/NEWS b/NEWS index 45792f62a9..0a3b6c7a5a 100644 --- a/NEWS +++ b/NEWS @@ -12,6 +12,8 @@ Major new features: * The dynamic linker accepts the --preload argument to preload shared objects, in addition to the LD_PRELOAD environment variable. +* On Linux, the gettid function has been added. + Deprecated and removed features, and other changes affecting compatibility: * The functions clock_gettime, clock_getres, clock_settime, diff --git a/manual/process.texi b/manual/process.texi index 652b0001b5..5728bde2cb 100644 --- a/manual/process.texi +++ b/manual/process.texi @@ -228,6 +228,17 @@ The @code{getppid} function returns the process ID of the parent of the current process. @end deftypefun +@deftypefun pid_t gettid (void) +@standards{Linux, unistd.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +The @code{gettid} function returns the thread ID of the current +thread. The returned value is obtained from the Linux kernel and is +not subject to caching. See the discussion of thread IDs above, +especially regarding reuse of the IDs of threads which have exited. + +This function is specific to Linux. +@end deftypefun + @node Creating a Process @section Creating a Process diff --git a/posix/Makefile b/posix/Makefile index 873947f72e..93c3a290d7 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -31,7 +31,8 @@ headers := sys/utsname.h sys/times.h sys/wait.h sys/types.h unistd.h \ bits/local_lim.h tar.h bits/utsname.h bits/confname.h \ bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h \ bits/sched.h bits/cpu-set.h re_comp.h wait.h bits/environments.h \ - cpio.h spawn.h bits/unistd.h bits/types/struct_sched_param.h + cpio.h spawn.h bits/unistd.h bits/types/struct_sched_param.h \ + bits/unistd_ext.h routines := \ uname \ diff --git a/posix/bits/unistd_ext.h b/posix/bits/unistd_ext.h new file mode 100644 index 0000000000..d6e88f3bd4 --- /dev/null +++ b/posix/bits/unistd_ext.h @@ -0,0 +1,21 @@ +/* System-specific extensions of <unistd.h>, generic version. + Copyright (C) 2019 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _UNISTD_H +# error "Never include <bits/unistd_ext.h> directly; use <unistd.h> instead." +#endif diff --git a/posix/unistd.h b/posix/unistd.h index f67452122b..55a989f7bb 100644 --- a/posix/unistd.h +++ b/posix/unistd.h @@ -1166,6 +1166,9 @@ int getentropy (void *__buffer, size_t __length) __wur; # include <bits/unistd.h> #endif +/* System-specific extensions. */ +#include <bits/unistd_ext.h> + __END_DECLS #endif /* unistd.h */ diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 5f8c2c7c7d..52ac6ad484 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -53,10 +53,9 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \ test-errno-linux tst-memfd_create tst-mlock2 tst-pkey \ - tst-rlimit-infinity tst-ofdlocks + tst-rlimit-infinity tst-ofdlocks tst-gettid tst-gettid-kill tests-internal += tst-ofdlocks-compat - # Generate the list of SYS_* macros for the system calls (__NR_* # macros). The file syscall-names.list contains all possible system # call names, and the generated header file produces SYS_* macros for @@ -114,6 +113,9 @@ $(objpfx)tst-mman-consts.out: ../sysdeps/unix/sysv/linux/tst-mman-consts.py $(CPPFLAGS))" \ < /dev/null > $@ 2>&1; $(evaluate-test) +$(objpfx)tst-gettid: $(shared-thread-library) +$(objpfx)tst-gettid-kill: $(shared-thread-library) + endif # $(subdir) == misc ifeq ($(subdir),time) diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions index f1e12d9c69..5166ccff25 100644 --- a/sysdeps/unix/sysv/linux/Versions +++ b/sysdeps/unix/sysv/linux/Versions @@ -174,6 +174,9 @@ libc { GLIBC_2.29 { getcpu; } + GLIBC_2.30 { + gettid; + } GLIBC_PRIVATE { # functions used in other libraries __syscall_rt_sigqueueinfo; diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist index 9c330f325e..f3b44d723f 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist @@ -2141,3 +2141,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist index f630fa4c6f..fe0de20b2b 100644 --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist @@ -2204,6 +2204,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist index b96f45590f..f451fefac9 100644 --- a/sysdeps/unix/sysv/linux/arm/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/libc.abilist @@ -126,6 +126,7 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid 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/bits/unistd_ext.h b/sysdeps/unix/sysv/linux/bits/unistd_ext.h new file mode 100644 index 0000000000..0061172f23 --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/unistd_ext.h @@ -0,0 +1,36 @@ +/* System-specific extensions of <unistd.h>, Linux version. + Copyright (C) 2019 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _UNISTD_H +# error "Never include <bits/unistd_ext.h> directly; use <unistd.h> instead." +#endif + +#ifdef __USE_GNU + +/* Return the kernel thread ID (TID) of the current thread. The + returned value is not subject to caching. Most Linux system calls + accept a TID in place of a PID. Using the TID to change properties + of a thread that has been created using pthread_create can lead to + undefined behavior (comparable to manipulating file descriptors + directly that have not been created explicitly). Note that a TID + uniquely identifies a thread only while this thread is running; a + TID can be reused once a thread has exited, even if the thread is + not detached and has not been joined. */ +extern __pid_t gettid (void) __THROW; + +#endif diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist index 019044c3cd..018d02b414 100644 --- a/sysdeps/unix/sysv/linux/csky/libc.abilist +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist @@ -2085,3 +2085,4 @@ GLIBC_2.29 xdrstdio_create F GLIBC_2.29 xencrypt F GLIBC_2.29 xprt_register F GLIBC_2.29 xprt_unregister F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist index 088a8ee369..fc3c5d5c27 100644 --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist @@ -2037,6 +2037,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 f7ff2c57b9..f2b04dbbff 100644 --- a/sysdeps/unix/sysv/linux/i386/libc.abilist +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist @@ -2203,6 +2203,7 @@ GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 vm86 F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 becd8b1033..10ecf2e47c 100644 --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist @@ -2069,6 +2069,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 74e42a5209..814e81b9d2 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist @@ -127,6 +127,7 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid 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 4af5a74e8a..68e80372e7 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist @@ -2146,6 +2146,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist index ccef673fd2..31178e4f54 100644 --- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist @@ -2133,3 +2133,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index 1054bb599e..7074573638 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -2120,6 +2120,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 4f5b5ffebf..154f9c77fc 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -2118,6 +2118,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 943aee58d4..97b8f42d5c 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -2126,6 +2126,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 17a5d17ef9..5b3e85de93 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -2120,6 +2120,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 4d62a540fd..04a130a81c 100644 --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist @@ -2174,3 +2174,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index ecc2d6fa13..d99a835544 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -2164,6 +2164,7 @@ GLIBC_2.3.4 siglongjmp F GLIBC_2.3.4 swapcontext F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 f5830f9c33..826772777a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -2197,6 +2197,7 @@ GLIBC_2.3.4 siglongjmp F GLIBC_2.3.4 swapcontext F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 633d8f4792..5aa038971b 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist @@ -2027,6 +2027,7 @@ GLIBC_2.3.4 siglongjmp F GLIBC_2.3.4 swapcontext F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 2c712636ef..c630d0c37d 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist @@ -2231,3 +2231,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist index 195bc8b2cf..da123d3867 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist @@ -2103,3 +2103,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist index 334def033c..361240400c 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist @@ -2159,6 +2159,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 536f4c4ced..f44f178a08 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist @@ -2063,6 +2063,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist index 30ae3b6ebb..24a8f934cb 100644 --- a/sysdeps/unix/sysv/linux/sh/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/libc.abilist @@ -2041,6 +2041,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 68b107d080..37957959e2 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist @@ -2153,6 +2153,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 e5b6a4da50..0992349b06 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist @@ -2092,6 +2092,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index e24ea29e35..544ab5d54a 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -112,3 +112,4 @@ process_vm_writev EXTRA process_vm_writev i:ipipii process_vm_writev memfd_create EXTRA memfd_create i:si memfd_create pkey_alloc EXTRA pkey_alloc i:ii pkey_alloc pkey_free EXTRA pkey_free i:i pkey_free +gettid EXTRA gettid Ei: __gettid gettid diff --git a/sysdeps/unix/sysv/linux/tst-gettid-kill.c b/sysdeps/unix/sysv/linux/tst-gettid-kill.c new file mode 100644 index 0000000000..98a7c2769e --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-gettid-kill.c @@ -0,0 +1,129 @@ +/* Verify the interaction of kill and thread groups. + Copyright (C) 2019 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 + <http://www.gnu.org/licenses/>. */ + +/* This test demonstrates that a signal which is sent to a specified + thread ID using the kill function is delivered to the entire thread + group (as if it had been sent to the process group). */ + +#include <errno.h> +#include <signal.h> +#include <support/check.h> +#include <support/xsignal.h> +#include <support/xthread.h> +#include <support/xunistd.h> + +/* Signal set containing SIGUSR1. */ +static sigset_t sigusr1_set; + +/* Used to synchronize the threads. */ +static pthread_barrier_t barrier; + +/* TID of the thread to which the signal is sent. */ +static pid_t target_tid; + +/* Thread which is expected to receive the SIGUSR1 signal. */ +static pthread_t signal_thread; + +/* Pipe used to block and terminate the signal thread. */ +static int pipe_signal[2]; + +static volatile sig_atomic_t handler_tid; + +static void +sigusr1_handler (int signo) +{ + TEST_COMPARE (signo, SIGUSR1); + TEST_VERIFY (pthread_self () == signal_thread); + TEST_COMPARE (handler_tid, 0); + handler_tid = gettid (); + TEST_VERIFY (handler_tid > 0); + /* Ensure that the read system call in thread_read exits if the + signal is delivered before the system call is invoked. */ + char ch = 'X'; + xwrite (pipe_signal[1], &ch, 1); +} + +/* Thread which calls pause without expecting it to return. The TID + of this thread is used as the target in the kill function call. */ +static void * +thread_pause_noreturn (void *closure) +{ + target_tid = gettid (); + TEST_VERIFY (target_tid > 0); + xpthread_barrier_wait (&barrier); + pause (); + FAIL_EXIT1 ("The pause function returned"); + return NULL; +} + +/* Thread which is expected to receive the signal. */ +static void * +thread_read_signal (void *closure) +{ + xpthread_sigmask (SIG_UNBLOCK, &sigusr1_set, NULL); + xpthread_barrier_wait (&barrier); + TEST_VERIFY (target_tid > 0); + TEST_VERIFY (gettid () != target_tid); + char ch; + ssize_t ret = read (pipe_signal[0], &ch, 1); + if (ret == 1) + /* The signal was delivered before we entered the read system + call. */ + TEST_COMPARE (ch, 'X'); + else + { + /* The signal was delivered while blocked in the read system + call. */ + TEST_COMPARE (ret, -1); + TEST_COMPARE (errno, EINTR); + } + TEST_COMPARE (handler_tid, gettid ()); + return NULL; +} + +static int +do_test (void) +{ + /* Block the SIGUSR1 signal in all threads. */ + sigemptyset (&sigusr1_set); + sigaddset (&sigusr1_set, SIGUSR1); + xpthread_sigmask (SIG_BLOCK, &sigusr1_set, NULL); + + xsignal (SIGUSR1, sigusr1_handler); + xpipe (pipe_signal); + + xpthread_barrier_init (&barrier, NULL, 3); + + pthread_t target_thread + = xpthread_create (NULL, thread_pause_noreturn, NULL); + signal_thread = xpthread_create (NULL, thread_read_signal, NULL); + xpthread_barrier_wait (&barrier); + + /* Send the SIGUSR1 signal to the thread which has it blocked, and + expect it to be delivered to the other thread. */ + TEST_COMPARE (kill (target_tid, SIGUSR1), 0); + + xpthread_join (signal_thread); + xpthread_cancel (target_thread); + xpthread_join (target_thread); + + xpthread_barrier_destroy (&barrier); + return 0; +} + +#include <support/test-driver.c> diff --git a/sysdeps/unix/sysv/linux/tst-gettid.c b/sysdeps/unix/sysv/linux/tst-gettid.c new file mode 100644 index 0000000000..26b579e1a1 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-gettid.c @@ -0,0 +1,79 @@ +/* Smoke test for the gettid system call. + Copyright (C) 2019 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 + <http://www.gnu.org/licenses/>. */ + +#include <support/check.h> +#include <support/namespace.h> +#include <support/xthread.h> +#include <support/xunistd.h> + +/* TID of the initial (main) thread. */ +static pid_t initial_tid; + +/* Check that PID and TID are the same in a subprocess. */ +static void +subprocess (void *closure) +{ + TEST_COMPARE (getpid (), gettid ()); + TEST_VERIFY (gettid () != initial_tid); +} + +/* Check that the TID changes in a new thread. */ +static void * +threadfunc (void *closure) +{ + TEST_VERIFY (getpid () != gettid ()); + TEST_VERIFY (gettid () != initial_tid); + return NULL; +} + +/* Check for interactions with vfork. */ +static void +test_vfork (void) +{ + pid_t proc = vfork (); + if (proc == 0) + { + if (getpid () != gettid ()) + _exit (1); + if (gettid () == initial_tid) + _exit (2); + _exit (0); + } + int status; + xwaitpid (proc, &status, 0); + TEST_COMPARE (status, 0); +} + +static int +do_test (void) +{ + initial_tid = gettid (); + + /* The main thread has the same TID as the PID. */ + TEST_COMPARE (getpid (), gettid ()); + + test_vfork (); + + support_isolate_in_subprocess (subprocess, NULL); + + xpthread_join (xpthread_create (NULL, threadfunc, NULL)); + + return 0; +} + +#include <support/test-driver.c> diff --git a/sysdeps/unix/sysv/linux/tst-setgetname.c b/sysdeps/unix/sysv/linux/tst-setgetname.c index 23184aae20..c373e61492 100644 --- a/sysdeps/unix/sysv/linux/tst-setgetname.c +++ b/sysdeps/unix/sysv/linux/tst-setgetname.c @@ -43,12 +43,6 @@ terminator. */ #define TASK_COMM_LEN 16 -long -gettid (void) -{ - return syscall(__NR_gettid); -} - /* On Linux we can read this task's name from /proc. */ int get_self_comm (long tid, char *buf, size_t len) diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist index 86dfb0c94d..af004fcff6 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist @@ -2050,6 +2050,7 @@ GLIBC_2.3.4 setipv4sourcefilter F GLIBC_2.3.4 setsourcefilter F GLIBC_2.3.4 xdr_quad_t F GLIBC_2.3.4 xdr_u_quad_t F +GLIBC_2.30 gettid 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 dd688263aa..84015f0a57 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist @@ -2149,3 +2149,4 @@ GLIBC_2.28 thrd_yield F GLIBC_2.29 getcpu F GLIBC_2.29 posix_spawn_file_actions_addchdir_np F GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F +GLIBC_2.30 gettid F |