diff options
Diffstat (limited to 'sysdeps')
33 files changed, 170 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index c6675b3..c484d26 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -44,7 +44,7 @@ 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 + test-errno-linux tst-memfd_create # Generate the list of SYS_* macros for the system calls (__NR_* # macros). The file syscall-names.list contains all possible system diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions index d3dbcde..6f2fe51 100644 --- a/sysdeps/unix/sysv/linux/Versions +++ b/sysdeps/unix/sysv/linux/Versions @@ -166,6 +166,9 @@ libc { GLIBC_2.15 { process_vm_readv; process_vm_writev; } + GLIBC_2.27 { + memfd_create; + } 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 ed598ae..140ca28 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist @@ -2106,6 +2106,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist index 4e57f36..f698e1b 100644 --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist @@ -2017,6 +2017,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist index 5b70e1b..8a8af3e 100644 --- a/sysdeps/unix/sysv/linux/arm/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/libc.abilist @@ -107,6 +107,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 _Exit F GLIBC_2.4 _IO_2_1_stderr_ D 0xa0 diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h index 78c07c8..1ffa549 100644 --- a/sysdeps/unix/sysv/linux/bits/mman-linux.h +++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h @@ -111,3 +111,19 @@ # define MCL_ONFAULT 4 /* Lock all pages that are faulted in. */ #endif + +#ifdef __USE_GNU +/* Flags for memfd_create. */ +# define MFD_CLOEXEC 1U +# define MFD_ALLOW_SEALING 2U +# define MFD_HUGETLB 4U + +__BEGIN_DECLS + +/* Create a new memory file descriptor. NAME is a name for debugging. + FLAGS is a combination of the MFD_* constants. */ +int memfd_create (const char *__name, unsigned int __flags) __THROW; + +__END_DECLS + +#endif /* __USE_GNU */ diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist index 6a2500a..5b81a6c 100644 --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist @@ -1871,6 +1871,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist index 9ab4e36..51ead9e 100644 --- a/sysdeps/unix/sysv/linux/i386/libc.abilist +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist @@ -2036,6 +2036,7 @@ GLIBC_2.26 wcstof128_l F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist index 81bb623..78b4ee8 100644 --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist @@ -1900,6 +1900,7 @@ GLIBC_2.26 wcstof128_l F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist index 5a33b57..d9c9777 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist @@ -108,6 +108,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.4 GLIBC_2.4 A GLIBC_2.4 _Exit F GLIBC_2.4 _IO_2_1_stderr_ D 0x98 diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist index 50a86e7..4acbf7e 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist @@ -1985,6 +1985,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist index 250ef30..93f02f0 100644 --- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist @@ -2106,3 +2106,4 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index 87a1dc4..795e85d 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -1960,6 +1960,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist index f2b35f2..dc71405 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -1958,6 +1958,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist index ade654d..ce7bc9b 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -1956,6 +1956,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist index 56032c3..3fdd85e 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -1951,6 +1951,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist index c599dd9..3e0bcb2 100644 --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist @@ -2147,3 +2147,4 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index 385409a..375c69d 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -1989,6 +1989,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist index e99cb45..a88172a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -1994,6 +1994,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist index 173672a..fa026a3 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist @@ -2201,3 +2201,4 @@ GLIBC_2.26 wcstof128_l F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist index 8a65443..838f395 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist @@ -108,6 +108,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 _Exit F GLIBC_2.3 _IO_2_1_stderr_ D 0xe0 diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist index dbd411c..41b79c4 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist @@ -1989,6 +1989,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist index 5617784..68251a0 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist @@ -1890,6 +1890,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist index 0f840e6..bc1aae2 100644 --- a/sysdeps/unix/sysv/linux/sh/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/libc.abilist @@ -1875,6 +1875,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist index bb7e104..93e6d09 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist @@ -1982,6 +1982,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist index 4053b0a..b11d676 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist @@ -1919,6 +1919,7 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.27 strfromf128 F GLIBC_2.27 strtof128 F GLIBC_2.27 strtof128_l F diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 8bfb080..40c4fbb 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -109,3 +109,4 @@ setns EXTRA setns i:ii setns process_vm_readv EXTRA process_vm_readv i:ipipii process_vm_readv process_vm_writev EXTRA process_vm_writev i:ipipii process_vm_writev +memfd_create EXTRA memfd_create i:si memfd_create diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist index 38a96d3..e9eb4ff 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist @@ -2113,3 +2113,4 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist index 572b917..8f08e90 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist @@ -2113,3 +2113,4 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist index 38a96d3..e9eb4ff 100644 --- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist @@ -2113,3 +2113,4 @@ GLIBC_2.26 reallocarray F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F diff --git a/sysdeps/unix/sysv/linux/tst-memfd_create.c b/sysdeps/unix/sysv/linux/tst-memfd_create.c new file mode 100644 index 0000000..fd173ff --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-memfd_create.c @@ -0,0 +1,121 @@ +/* Test for the memfd_create system call. + Copyright (C) 2017 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 <errno.h> +#include <fcntl.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <support/check.h> +#include <support/support.h> +#include <support/test-driver.h> +#include <support/xunistd.h> +#include <sys/mman.h> + +/* Return true if the descriptor has the FD_CLOEXEC flag set. */ +static bool +is_cloexec (int fd) +{ + int flags = fcntl (fd, F_GETFD); + TEST_VERIFY (flags >= 0); + return flags & FD_CLOEXEC; +} + +/* Return the seals set on FD. */ +static int +get_seals (int fd) +{ + int flags = fcntl (fd, F_GET_SEALS); + TEST_VERIFY (flags >= 0); + return flags; +} + +/* Return true if the F_SEAL_SEAL flag is set on the descriptor. */ +static bool +is_sealed (int fd) +{ + return get_seals (fd) & F_SEAL_SEAL; +} + +static int +do_test (void) +{ + /* Initialized by the first call to memfd_create to 0 (memfd_create + unsupported) or 1 (memfd_create is implemented in the kernel). + Subsequent iterations check that the success/failure state is + consistent. */ + int supported = -1; + + for (int do_cloexec = 0; do_cloexec < 2; ++do_cloexec) + for (int do_sealing = 0; do_sealing < 2; ++do_sealing) + { + int flags = 0; + if (do_cloexec) + flags |= MFD_CLOEXEC; + if (do_sealing) + flags |= MFD_ALLOW_SEALING; + if (test_verbose > 0) + printf ("info: memfd_create with flags=0x%x\n", flags); + int fd = memfd_create ("tst-memfd_create", flags); + if (fd < 0) + { + if (errno == ENOSYS) + { + if (supported < 0) + { + printf ("warning: memfd_create is unsupported\n"); + supported = 0; + continue; + } + TEST_VERIFY (supported == 0); + continue; + } + else + FAIL_EXIT1 ("memfd_create: %m"); + } + if (supported < 0) + supported = 1; + TEST_VERIFY (supported > 0); + + char *fd_path = xasprintf ("/proc/self/fd/%d", fd); + char *link = xreadlink (fd_path); + if (test_verbose > 0) + printf ("info: memfd link: %s\n", link); + TEST_VERIFY (strcmp (link, "memfd:tst-memfd_create (deleted)")); + TEST_VERIFY (is_cloexec (fd) == do_cloexec); + TEST_VERIFY (is_sealed (fd) == !do_sealing); + if (do_sealing) + { + TEST_VERIFY (fcntl (fd, F_ADD_SEALS, F_SEAL_WRITE) == 0); + TEST_VERIFY (!is_sealed (fd)); + TEST_VERIFY (get_seals (fd) & F_SEAL_WRITE); + TEST_VERIFY (fcntl (fd, F_ADD_SEALS, F_SEAL_SEAL) == 0); + TEST_VERIFY (is_sealed (fd)); + } + xclose (fd); + free (fd_path); + free (link); + } + + if (supported == 0) + return EXIT_UNSUPPORTED; + return 0; +} + +#include <support/test-driver.c> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist index b83d25c..0a4f779 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist @@ -1877,6 +1877,7 @@ GLIBC_2.26 wcstof128_l F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist index cba1d59..23f6a91 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist @@ -2120,3 +2120,4 @@ GLIBC_2.26 wcstof128_l F GLIBC_2.27 GLIBC_2.27 A GLIBC_2.27 glob F GLIBC_2.27 glob64 F +GLIBC_2.27 memfd_create F |