From 6073bae64ccf27d6ebf5e49592a715801e14a5ba Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Sat, 18 Jul 2020 08:20:46 -0300 Subject: linux: Disentangle fstatat from fxstatat It implements all the required syscall for the all Linux kABIS on fstatat{64} instead of calling fxstatat{64}. On non-LFS implementation, it handles 3 cases: 1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and nios): it issues __NR_fstat64 plus handle the overflow on st_ino, st_size, or st_blocks. 2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k, microblaze, mips32, s390, sh, powerpc, and sparc32): it issues __NR_fstatat64 and convert the result to struct stat. 3. 64-bit kABI outliers (mips64 and mips64-n32): it issues __NR_newfstatat and convert the result to struct stat. The generic LFS implementation handles multiple cases: 1. XSTAT_IS_XSTAT64 being 1: 1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and x86_64): it issues __NR_newfstatat. 1.2. 64-bit kABI outlier (alpha): it issues __NR_fstatat64. 1.3. 64-bit kABI outlier where struct stat64 does not match kernel one (sparc64): it issues __NR_fstatat64 and convert the result to struct stat64. 1.4. 32-bit kABI with default 64-bit time_t (arc, riscv32): it issues __NR_statx and convert the result to struct stat64. 2. Old ABIs with XSTAT_IS_XSTAT64 being 0: 2.1. All kABIs with non-LFS support (arm, csky, i386, hppa, m68k, microblaze, nios2, sh, powerpc32, and sparc32): it issues __NR_fstatat64. 2.2. 64-bit kABI outliers (mips64 and mips64-n32): it issues __NR_newfstatat and convert the result to struct stat64. It allows to remove all the hidden definitions from the {f,l}xstat{64} (some are still kept because Hurd requires it). Checked with a build for all affected ABIs. I also checked on x86_64, i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x. Reviewed-by: Lukasz Majewski --- sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h | 46 ++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h (limited to 'sysdeps/unix/sysv/linux/sparc') diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h b/sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h new file mode 100644 index 0000000000..0599b6a49e --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h @@ -0,0 +1,46 @@ +/* Struct kernel_stat64 to stat64. Linux/SPARC version. + Copyright (C) 2020 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 + +static inline int +__cp_stat64_kstat64 (struct stat64 *st64, const struct kernel_stat64 *kst64) +{ + st64->st_dev = kst64->st_dev; + st64->__pad1 = 0; + st64->st_ino = kst64->st_ino; + st64->st_mode = kst64->st_mode; + st64->st_nlink = kst64->st_nlink; + st64->st_uid = kst64->st_uid; + st64->st_gid = kst64->st_gid; + st64->st_rdev = kst64->st_rdev; + st64->__pad2 = 0; + st64->st_size = kst64->st_size; + st64->st_blksize = kst64->st_blksize; + st64->st_blocks = kst64->st_blocks; + st64->st_atim.tv_sec = kst64->st_atime_sec; + st64->st_atim.tv_nsec = kst64->st_atime_nsec; + st64->st_mtim.tv_sec = kst64->st_mtime_sec; + st64->st_mtim.tv_nsec = kst64->st_mtime_nsec; + st64->st_ctim.tv_sec = kst64->st_ctime_sec; + st64->st_ctim.tv_nsec = kst64->st_ctime_nsec; + st64->__glibc_reserved4 = 0; + st64->__glibc_reserved5 = 0; + + return 0; +} -- cgit v1.2.3-70-g09d2