| Message ID | 20200723194641.1949404-5-adhemerval.zanella@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Add y2038 support for stat functions | expand |
On Thu, 23 Jul 2020 16:46:29 -0300 Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote: > The LFS support is implemented on lxstat64.c, instead of lxstat.c for > 64-bit architectures. The xstat.c implements the non-LFS and it is > a no-op for !XSTAT_IS_XSTAT64. > > The generic non-LFS implementation handles two cases: > > 1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and > nios): it issues __NR_fstat64 with AT_SYMLINK_NOFOLLOW plus > handles the possible overflow off st_ino, st_size, or st_blocks. It > only handles _STAT_VER_KERNEL. > > 2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k, > microblaze, s390, sh, powerpc, and sparc32). For > _STAT_VER_KERNEL it issues __NR_lstat, otherwise it isseus > __NR_lstat64 and convert to non-LFS stat struct and handle possible > overflows on st_ino, st_size, or st_blocks. > > Also non-LFS mips is an outlier and it has its own implementation > since _STAT_VER_LINUX requires a different conversion function (it > uses the kernel_stat as the syscall argument since its exported ABI > is different than the kernel one for both non-LFS and LFS > implementation). > > The generic LFS implementation handles multiple cases: > > 1. XSTAT_IS_XSTAT64 being 1: > > 1.1. Old 64-bit kABI (ia64, powerpc64*, s390x, sparc64, x86_64): > it issues __NR_lstat for _STAT_VER_KERNEL or _STAT_VER_LINUX. > > 1.2. New kABIs which uses generic 64-bit Linux ABI (aarch64 and > riscv64): it issues __NR_newfstatat with AT_SYMLINK_NOFOLLOW > and only for _STAT_VER_KERNEL. > > 1.3. New 32-bit kABIs with only 64-bit time_t support (arc and > riscv32): it issues __NR_statx and covert to struct stat64. > > 2. Old ABIs with XSTAT_IS_XSTAT64 being 0: > > 2.1. New kABIs which uses generic pre 64-bit time Linux ABI (csky > and nios2): it issues __NR_fstatat64 for _STAT_VER_KERNEL. > > 2.2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k, > microblaze, s390, sh, mips32, powerpc32, and sparc32): it > issues __NR_lstat64. > > Also, two special cases requires specific LFS implementations: > > 1. alpha: it requires to handle _STAT_VER_KERNEL64 to issue > __NR_lstat64 and use the kernel_stat with __NR_lstat otherwise. > > 2. mips64: as for non-LFS implementation its ABIs differ from > glibc exported one, which requires a specific conversion > function to handle the kernel_stat. > > 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 <lukma@denx.de> > --- > sysdeps/unix/sysv/linux/alpha/lxstat.c | 57 ---------------- > .../{generic/lxstat.c => alpha/lxstat64.c} | 47 ++++++------- > sysdeps/unix/sysv/linux/arm/lxstat.c | 1 - > .../sysv/linux/generic/wordsize-32/lxstat.c | 55 ---------------- > .../sysv/linux/generic/wordsize-32/lxstat64.c | 66 > ------------------- sysdeps/unix/sysv/linux/hppa/lxstat.c | > 1 - sysdeps/unix/sysv/linux/i386/lxstat.c | 60 > ----------------- sysdeps/unix/sysv/linux/lxstat.c | 64 > +++++++++--------- sysdeps/unix/sysv/linux/lxstat64.c | 58 > +++++++++++++--- sysdeps/unix/sysv/linux/m68k/lxstat.c | 1 - > sysdeps/unix/sysv/linux/microblaze/lxstat.c | 1 - > .../sysv/linux/{wordsize-64 => mips}/lxstat.c | 37 +++++------ > .../unix/sysv/linux/mips/mips64/lxstat64.c | 14 +--- > .../sysv/linux/powerpc/powerpc32/lxstat.c | 2 - > sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c | 1 - > sysdeps/unix/sysv/linux/sh/lxstat.c | 2 - > .../unix/sysv/linux/sparc/sparc32/lxstat.c | 2 - > .../unix/sysv/linux/sparc/sparc64/lxstat.c | 1 - > .../unix/sysv/linux/wordsize-64/lxstat64.c | 1 - > 19 files changed, 126 insertions(+), 345 deletions(-) > delete mode 100644 sysdeps/unix/sysv/linux/alpha/lxstat.c > rename sysdeps/unix/sysv/linux/{generic/lxstat.c => > alpha/lxstat64.c} (55%) delete mode 100644 > sysdeps/unix/sysv/linux/arm/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c delete mode > 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c delete > mode 100644 sysdeps/unix/sysv/linux/hppa/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/i386/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/m68k/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/microblaze/lxstat.c rename > sysdeps/unix/sysv/linux/{wordsize-64 => mips}/lxstat.c (60%) delete > mode 100644 sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c delete > mode 100644 sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c delete mode > 100644 sysdeps/unix/sysv/linux/sh/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c delete mode 100644 > sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c > > diff --git a/sysdeps/unix/sysv/linux/alpha/lxstat.c > b/sysdeps/unix/sysv/linux/alpha/lxstat.c deleted file mode 100644 > index eb03a5fbfe..0000000000 > --- a/sysdeps/unix/sysv/linux/alpha/lxstat.c > +++ /dev/null > @@ -1,57 +0,0 @@ > -/* lxstat using old-style Unix stat system call. > - Copyright (C) 2004-2020 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 > - <https://www.gnu.org/licenses/>. */ > - > -#define __lxstat64 __lxstat64_disable > - > -#include <errno.h> > -#include <stddef.h> > -#include <sys/stat.h> > -#include <kernel_stat.h> > -#include <sysdep.h> > -#include <sys/syscall.h> > -#include <xstatconv.h> > - > -#undef __lxstat64 > - > - > -/* Get information about the file NAME in BUF. */ > -int > -__lxstat (int vers, const char *name, struct stat *buf) > -{ > - int result; > - struct kernel_stat kbuf; > - > - if (vers == _STAT_VER_KERNEL64) > - { > - result = INTERNAL_SYSCALL_CALL (lstat64, name, buf); > - if (__glibc_likely (!INTERNAL_SYSCALL_ERROR_P (result))) > - return result; > - __set_errno (INTERNAL_SYSCALL_ERRNO (result)); > - return -1; > - } > - > - result = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); > - if (__glibc_likely (!INTERNAL_SYSCALL_ERROR_P (result))) > - return __xstat_conv (vers, &kbuf, buf); > - __set_errno (INTERNAL_SYSCALL_ERRNO (result)); > - return -1; > -} > -hidden_def (__lxstat) > -weak_alias (__lxstat, _lxstat); > -strong_alias (__lxstat, __lxstat64); > -hidden_ver (__lxstat, __lxstat64) > diff --git a/sysdeps/unix/sysv/linux/generic/lxstat.c > b/sysdeps/unix/sysv/linux/alpha/lxstat64.c similarity index 55% > rename from sysdeps/unix/sysv/linux/generic/lxstat.c > rename to sysdeps/unix/sysv/linux/alpha/lxstat64.c > index 1cf082961a..90dc0c7ce7 100644 > --- a/sysdeps/unix/sysv/linux/generic/lxstat.c > +++ b/sysdeps/unix/sysv/linux/alpha/lxstat64.c > @@ -1,6 +1,6 @@ > -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. > +/* lxstat using old-style Unix stat system call. > + Copyright (C) 2004-2020 Free Software Foundation, Inc. > This file is part of the GNU C Library. > - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. > > The GNU C Library is free software; you can redistribute it and/or > modify it under the terms of the GNU Lesser General Public > @@ -16,33 +16,34 @@ > License along with the GNU C Library. If not, see > <https://www.gnu.org/licenses/>. */ > > -/* Ignore prototype to avoid error if we alias __lxstat and > __lxstat64. */ -#define __lxstat64 __lxstat64_disable > - > -#include <errno.h> > -#include <stddef.h> > -#include <fcntl.h> > +#define __lxstat __redirect___lxstat > #include <sys/stat.h> > +#undef __lxstat > +#include <fcntl.h> > #include <kernel_stat.h> > - > #include <sysdep.h> > -#include <sys/syscall.h> > +#include <xstatconv.h> > > /* Get information about the file NAME in BUF. */ > int > -__lxstat (int vers, const char *name, struct stat *buf) > +__lxstat64 (int vers, const char *name, struct stat64 *buf) > { > - if (vers == _STAT_VER_KERNEL) > - return INLINE_SYSCALL (newfstatat, 4, AT_FDCWD, name, buf, > - AT_SYMLINK_NOFOLLOW); > - errno = EINVAL; > - return -1; > + switch (vers) > + { > + case _STAT_VER_KERNEL64: > + return INLINE_SYSCALL_CALL (lstat64, name, buf); > + > + default: > + { > + struct kernel_stat kbuf; > + int r = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); > + if (r == 0) > + return __xstat_conv (vers, &kbuf, buf); > + return INLINE_SYSCALL_ERROR_RETURN_VALUE (-r); > + } > + } > } > +weak_alias (__lxstat64, __lxstat); > +weak_alias (__lxstat64, __GI___lxstat); > > -hidden_def (__lxstat) > -weak_alias (__lxstat, _lxstat); > -#if XSTAT_IS_XSTAT64 > -#undef __lxstat64 > -strong_alias (__lxstat, __lxstat64); > -hidden_ver (__lxstat, __lxstat64) > -#endif > +hidden_def (__lxstat64) > diff --git a/sysdeps/unix/sysv/linux/arm/lxstat.c > b/sysdeps/unix/sysv/linux/arm/lxstat.c deleted file mode 100644 > index 0efa0aea49..0000000000 > --- a/sysdeps/unix/sysv/linux/arm/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c > b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c deleted file > mode 100644 index bd02631d68..0000000000 > --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c > +++ /dev/null > @@ -1,55 +0,0 @@ > -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public > - License as published by the Free Software Foundation; either > - version 2.1 of the License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be > useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library. If not, see > - <https://www.gnu.org/licenses/>. */ > - > -#include <errno.h> > -#include <stddef.h> > -#include <fcntl.h> > -#include <sys/stat.h> > -#include <kernel_stat.h> > - > -#include <sysdep.h> > -#include <sys/syscall.h> > - > -#if !XSTAT_IS_XSTAT64 > -#include "overflow.h" > -#include <statx_cp.h> > - > -/* Get information about the file NAME in BUF. */ > -int > -__lxstat (int vers, const char *name, struct stat *buf) > -{ > - if (vers == _STAT_VER_KERNEL) > - { > -#ifdef __NR_fstatat64 > - int rc = INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, > - AT_SYMLINK_NOFOLLOW); > -#else > - struct statx tmp; > - int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, > - AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, > - STATX_BASIC_STATS, &tmp); > - if (rc == 0) > - __cp_stat64_statx ((struct stat64 *)buf, &tmp); > -#endif > - return rc ?: stat_overflow (buf); > - } > - errno = EINVAL; > - return -1; > -} > -hidden_def (__lxstat) > -#endif > diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c > b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c deleted file > mode 100644 index 3eab0a1847..0000000000 > --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c > +++ /dev/null > @@ -1,66 +0,0 @@ > -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public > - License as published by the Free Software Foundation; either > - version 2.1 of the License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be > useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library. If not, see > - <https://www.gnu.org/licenses/>. */ > - > -/* Hide the prototype for __lxstat so that GCC will not complain > about > - the different function signature if it is aliased to __lxstat64. > - If XSTAT_IS_XSTAT64 is set to non-zero then the stat and stat64 > - structures have an identical layout but different type names. */ > - > -#define __lxstat __lxstat_disable > - > -#include <errno.h> > -#include <stddef.h> > -#include <fcntl.h> > -#include <sys/stat.h> > -#include <kernel_stat.h> > - > -#include <sysdep.h> > -#include <sys/syscall.h> > - > -#include <statx_cp.h> > - > -/* Get information about the file NAME in BUF. */ > -int > -__lxstat64 (int vers, const char *name, struct stat64 *buf) > -{ > - if (vers == _STAT_VER_KERNEL) > - { > -#ifdef __NR_fstatat64 > - return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, > - AT_SYMLINK_NOFOLLOW); > -#else > - struct statx tmp; > - int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, > - AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, > - STATX_BASIC_STATS, &tmp); > - if (rc == 0) > - __cp_stat64_statx (buf, &tmp); > - return rc; > -#endif > - } > - > - errno = EINVAL; > - return -1; > -} > -hidden_def (__lxstat64) > - > -#undef __lxstat > -#if XSTAT_IS_XSTAT64 > -strong_alias (__lxstat64, __lxstat) > -hidden_ver (__lxstat64, __lxstat) > -#endif > diff --git a/sysdeps/unix/sysv/linux/hppa/lxstat.c > b/sysdeps/unix/sysv/linux/hppa/lxstat.c deleted file mode 100644 > index 0efa0aea49..0000000000 > --- a/sysdeps/unix/sysv/linux/hppa/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > diff --git a/sysdeps/unix/sysv/linux/i386/lxstat.c > b/sysdeps/unix/sysv/linux/i386/lxstat.c deleted file mode 100644 > index e960077893..0000000000 > --- a/sysdeps/unix/sysv/linux/i386/lxstat.c > +++ /dev/null > @@ -1,60 +0,0 @@ > -/* lxstat using old-style Unix lstat system call. > - Copyright (C) 1991-2020 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 > - <https://www.gnu.org/licenses/>. */ > - > -/* Ho hum, if xstat == xstat64 we must get rid of the prototype or > gcc > - will complain since they don't strictly match. */ > -#define __lxstat64 __lxstat64_disable > - > -#include <errno.h> > -#include <stddef.h> > -#include <sys/stat.h> > -#include <kernel_stat.h> > - > -#include <sysdep.h> > -#include <sys/syscall.h> > - > -#include <xstatconv.h> > - > - > -/* Get information about the file NAME in BUF. */ > -int > -__lxstat (int vers, const char *name, struct stat *buf) > -{ > - int result; > - > - if (vers == _STAT_VER_KERNEL) > - return INLINE_SYSCALL (lstat, 2, name, buf); > - > - { > - struct stat64 buf64; > - > - result = INTERNAL_SYSCALL_CALL (lstat64, name, &buf64); > - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result))) > - return INLINE_SYSCALL_ERROR_RETURN_VALUE > (INTERNAL_SYSCALL_ERRNO (result)); > - else > - return __xstat32_conv (vers, &buf64, buf); > - } > -} > - > -hidden_def (__lxstat) > -weak_alias (__lxstat, _lxstat); > -#if XSTAT_IS_XSTAT64 > -#undef __lxstat64 > -strong_alias (__lxstat, __lxstat64); > -hidden_ver (__lxstat, __lxstat64) > -#endif > diff --git a/sysdeps/unix/sysv/linux/lxstat.c > b/sysdeps/unix/sysv/linux/lxstat.c index dcd685873d..dc63d20061 100644 > --- a/sysdeps/unix/sysv/linux/lxstat.c > +++ b/sysdeps/unix/sysv/linux/lxstat.c > @@ -1,4 +1,4 @@ > -/* lxstat using old-style Unix lstat system call. > +/* lxstat using old-style Unix stat system call. > Copyright (C) 1991-2020 Free Software Foundation, Inc. > This file is part of the GNU C Library. > > @@ -16,45 +16,47 @@ > License along with the GNU C Library; if not, see > <https://www.gnu.org/licenses/>. */ > > -/* Ho hum, if xstat == xstat64 we must get rid of the prototype or > gcc > - will complain since they don't strictly match. */ > -#define __lxstat64 __lxstat64_disable > - > -#include <errno.h> > -#include <stddef.h> > #include <sys/stat.h> > +#include <fcntl.h> > #include <kernel_stat.h> > - > #include <sysdep.h> > -#include <sys/syscall.h> > > -#include <xstatconv.h> > +#if !XSTAT_IS_XSTAT64 > +# include <xstatconv.h> > +# include <xstatover.h> > > /* Get information about the file NAME in BUF. */ > int > __lxstat (int vers, const char *name, struct stat *buf) > { > - if (vers == _STAT_VER_KERNEL) > - return INLINE_SYSCALL (lstat, 2, name, buf); > - > -#if STAT_IS_KERNEL_STAT > - return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); > -#else > - struct kernel_stat kbuf; > - int result; > - > - result = INLINE_SYSCALL (lstat, 2, name, &kbuf); > - if (result == 0) > - result = __xstat_conv (vers, &kbuf, buf); > - > - return result; > + switch (vers) > + { > + case _STAT_VER_KERNEL: > + { > +# if STAT_IS_KERNEL_STAT > + /* New kABIs which uses generic pre 64-bit time Linux ABI, > + e.g. csky, nios2 */ > + int r = INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf, > + AT_SYMLINK_NOFOLLOW); > + return r ?: stat_overflow (buf); > +# else > + /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, > m68k, > + microblaze, s390, sh, powerpc, and sparc. */ > + return INLINE_SYSCALL_CALL (lstat, name, buf); > +# endif > + } > + > + default: > + { > +# if STAT_IS_KERNEL_STAT > + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); > +# else > + struct stat64 buf64; > + int r = INTERNAL_SYSCALL_CALL (lstat64, name, &buf64); > + return r ?: __xstat32_conv (vers, &buf64, buf); > #endif > + } > + } > } > - > hidden_def (__lxstat) > -weak_alias (__lxstat, _lxstat); > -#if XSTAT_IS_XSTAT64 > -#undef __lxstat64 > -strong_alias (__lxstat, __lxstat64); > -hidden_ver (__lxstat, __lxstat64) > -#endif > +#endif /* XSTAT_IS_XSTAT64 */ > diff --git a/sysdeps/unix/sysv/linux/lxstat64.c > b/sysdeps/unix/sysv/linux/lxstat64.c index 0ea8399d68..375013e9b1 > 100644 --- a/sysdeps/unix/sysv/linux/lxstat64.c > +++ b/sysdeps/unix/sysv/linux/lxstat64.c > @@ -1,5 +1,5 @@ > /* lxstat64 using Linux lstat64 system call. > - Copyright (C) 1997-2020 Free Software Foundation, Inc. > + Copyright (C) 1991-2020 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 > @@ -16,23 +16,65 @@ > License along with the GNU C Library; if not, see > <https://www.gnu.org/licenses/>. */ > > -#include <errno.h> > -#include <stddef.h> > +#define __lxstat __redirect___lxstat > #include <sys/stat.h> > +#undef __lxstat > +#include <fcntl.h> > #include <kernel_stat.h> > - > #include <sysdep.h> > -#include <sys/syscall.h> > +#include <xstatconv.h> > +#include <statx_cp.h> > > /* Get information about the file NAME in BUF. */ > + > int > ___lxstat64 (int vers, const char *name, struct stat64 *buf) > { > - int result; > - result = INLINE_SYSCALL (lstat64, 2, name, buf); > - return result; > +#if XSTAT_IS_XSTAT64 > +# if defined __NR_lstat > + /* Old 64-bit kABI, e.g. ia64, powerpc64*, s390x, sparc64, x86_64. > */ > + if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX) > + return INLINE_SYSCALL_CALL (lstat, name, buf); > +# elif defined __NR_newfstatat > + /* New kABIs which uses generic 64-bit Linux ABI, e.g. aarch64, > riscv64. */ > + if (vers == _STAT_VER_KERNEL) > + return INLINE_SYSCALL_CALL (newfstatat, AT_FDCWD, name, buf, > + AT_SYMLINK_NOFOLLOW); > +# else > + /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, > riscv32. */ > + if (vers == _STAT_VER_KERNEL) > + { > + struct statx tmp; > + int r = INLINE_SYSCALL_CALL (statx, AT_FDCWD, name, > + AT_NO_AUTOMOUNT | > AT_SYMLINK_NOFOLLOW, > + STATX_BASIC_STATS, &tmp); > + if (r == 0) > + __cp_stat64_statx (buf, &tmp); > + return r; > + } > +# endif > +#else > +# if STAT_IS_KERNEL_STAT > + /* New kABIs which uses generic pre 64-bit time Linux ABI, > + e.g. csky, nios2 */ > + if (vers == _STAT_VER_KERNEL) > + return INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf, > + AT_SYMLINK_NOFOLLOW); > +# else > + /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k, > + microblaze, s390, sh, mips32, powerpc32, and sparc32. */ > + return INLINE_SYSCALL_CALL (lstat64, name, buf); > +# endif /* STAT_IS_KERNEL_STAT */ > +#endif /* XSTAT_IS_XSTAT64 */ > + > + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); > } > > +#if XSTAT_IS_XSTAT64 > +weak_alias (___lxstat64, __lxstat); > +weak_alias (___lxstat64, __GI___lxstat); > +#endif > + > #include <shlib-compat.h> > > #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) > diff --git a/sysdeps/unix/sysv/linux/m68k/lxstat.c > b/sysdeps/unix/sysv/linux/m68k/lxstat.c deleted file mode 100644 > index 0efa0aea49..0000000000 > --- a/sysdeps/unix/sysv/linux/m68k/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > diff --git a/sysdeps/unix/sysv/linux/microblaze/lxstat.c > b/sysdeps/unix/sysv/linux/microblaze/lxstat.c deleted file mode 100644 > index 0efa0aea49..0000000000 > --- a/sysdeps/unix/sysv/linux/microblaze/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > diff --git a/sysdeps/unix/sysv/linux/wordsize-64/lxstat.c > b/sysdeps/unix/sysv/linux/mips/lxstat.c similarity index 60% > rename from sysdeps/unix/sysv/linux/wordsize-64/lxstat.c > rename to sysdeps/unix/sysv/linux/mips/lxstat.c > index 156fbe7c64..eb07549adf 100644 > --- a/sysdeps/unix/sysv/linux/wordsize-64/lxstat.c > +++ b/sysdeps/unix/sysv/linux/mips/lxstat.c > @@ -1,4 +1,4 @@ > -/* lxstat using old-style Unix lstat system call. > +/* lxstat using old-style Unix stat system call. > Copyright (C) 1991-2020 Free Software Foundation, Inc. > This file is part of the GNU C Library. > > @@ -16,30 +16,27 @@ > License along with the GNU C Library; if not, see > <https://www.gnu.org/licenses/>. */ > > -/* Ho hum, since xstat == xstat64 we must get rid of the prototype > or gcc > - will complain since they don't strictly match. */ > -#define __lxstat64 __lxstat64_disable > - > -#include <errno.h> > -#include <stddef.h> > #include <sys/stat.h> > - > +#include <fcntl.h> > +#include <kernel_stat.h> > #include <sysdep.h> > -#include <sys/syscall.h> > +#include <xstatconv.h> > > -/* Get information about the file FD in BUF. */ > +/* Get information about the file NAME in BUF. */ > int > __lxstat (int vers, const char *name, struct stat *buf) > { > - if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX) > - return INLINE_SYSCALL (lstat, 2, name, buf); > - > - __set_errno (EINVAL); > - return -1; > + switch (vers) > + { > + case _STAT_VER_KERNEL: > + return INLINE_SYSCALL_CALL (lstat, name, buf); > + > + default: > + { > + struct kernel_stat kbuf; > + int r = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); > + return r ?: __xstat_conv (vers, &kbuf, buf); > + } > + } > } > - > hidden_def (__lxstat) > -weak_alias (__lxstat, _lxstat); > -#undef __lxstat64 > -strong_alias (__lxstat, __lxstat64); > -hidden_ver (__lxstat, __lxstat64) > diff --git a/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c > b/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c index > 62d4fe70eb..28bac57e58 100644 --- > a/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c +++ > b/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c @@ -16,28 +16,18 @@ > License along with the GNU C Library; if not, see > <https://www.gnu.org/licenses/>. */ > > -#include <errno.h> > -#include <stddef.h> > #include <sys/stat.h> > #include <kernel_stat.h> > - > #include <sysdep.h> > -#include <sys/syscall.h> > - > #include <xstatconv.h> > > /* Get information about the file NAME in BUF. */ > int > __lxstat64 (int vers, const char *name, struct stat64 *buf) > { > - int result; > struct kernel_stat kbuf; > - > - result = INLINE_SYSCALL (lstat, 2, name, &kbuf); > - if (result == 0) > - result = __xstat64_conv (vers, &kbuf, buf); > - > - return result; > + int r = INLINE_SYSCALL_CALL (lstat, name, &kbuf); > + return r ?: __xstat64_conv (vers, &kbuf, buf); > } > > hidden_def (__lxstat64) > diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c > b/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c deleted file > mode 100644 index 2371cd9719..0000000000 > --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c > +++ /dev/null > @@ -1,2 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > - > diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c > b/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c deleted file mode > 100644 index 0efa0aea49..0000000000 > --- a/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > diff --git a/sysdeps/unix/sysv/linux/sh/lxstat.c > b/sysdeps/unix/sysv/linux/sh/lxstat.c deleted file mode 100644 > index 2371cd9719..0000000000 > --- a/sysdeps/unix/sysv/linux/sh/lxstat.c > +++ /dev/null > @@ -1,2 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > - > diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c > b/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c deleted file mode > 100644 index 2371cd9719..0000000000 > --- a/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c > +++ /dev/null > @@ -1,2 +0,0 @@ > -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> > - > diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c > b/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c deleted file mode > 100644 index 7f1e98e433..0000000000 > --- a/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c > +++ /dev/null > @@ -1 +0,0 @@ > -#include "../../i386/lxstat.c" > diff --git a/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c > b/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c deleted file mode > 100644 index bb5dbd0fff..0000000000 > --- a/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c > +++ /dev/null > @@ -1 +0,0 @@ > -/* lxstat64 is in lxstat.c */ Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de
diff --git a/sysdeps/unix/sysv/linux/alpha/lxstat.c b/sysdeps/unix/sysv/linux/alpha/lxstat.c deleted file mode 100644 index eb03a5fbfe..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/lxstat.c +++ /dev/null @@ -1,57 +0,0 @@ -/* lxstat using old-style Unix stat system call. - Copyright (C) 2004-2020 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 - <https://www.gnu.org/licenses/>. */ - -#define __lxstat64 __lxstat64_disable - -#include <errno.h> -#include <stddef.h> -#include <sys/stat.h> -#include <kernel_stat.h> -#include <sysdep.h> -#include <sys/syscall.h> -#include <xstatconv.h> - -#undef __lxstat64 - - -/* Get information about the file NAME in BUF. */ -int -__lxstat (int vers, const char *name, struct stat *buf) -{ - int result; - struct kernel_stat kbuf; - - if (vers == _STAT_VER_KERNEL64) - { - result = INTERNAL_SYSCALL_CALL (lstat64, name, buf); - if (__glibc_likely (!INTERNAL_SYSCALL_ERROR_P (result))) - return result; - __set_errno (INTERNAL_SYSCALL_ERRNO (result)); - return -1; - } - - result = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); - if (__glibc_likely (!INTERNAL_SYSCALL_ERROR_P (result))) - return __xstat_conv (vers, &kbuf, buf); - __set_errno (INTERNAL_SYSCALL_ERRNO (result)); - return -1; -} -hidden_def (__lxstat) -weak_alias (__lxstat, _lxstat); -strong_alias (__lxstat, __lxstat64); -hidden_ver (__lxstat, __lxstat64) diff --git a/sysdeps/unix/sysv/linux/generic/lxstat.c b/sysdeps/unix/sysv/linux/alpha/lxstat64.c similarity index 55% rename from sysdeps/unix/sysv/linux/generic/lxstat.c rename to sysdeps/unix/sysv/linux/alpha/lxstat64.c index 1cf082961a..90dc0c7ce7 100644 --- a/sysdeps/unix/sysv/linux/generic/lxstat.c +++ b/sysdeps/unix/sysv/linux/alpha/lxstat64.c @@ -1,6 +1,6 @@ -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. +/* lxstat using old-style Unix stat system call. + Copyright (C) 2004-2020 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -16,33 +16,34 @@ License along with the GNU C Library. If not, see <https://www.gnu.org/licenses/>. */ -/* Ignore prototype to avoid error if we alias __lxstat and __lxstat64. */ -#define __lxstat64 __lxstat64_disable - -#include <errno.h> -#include <stddef.h> -#include <fcntl.h> +#define __lxstat __redirect___lxstat #include <sys/stat.h> +#undef __lxstat +#include <fcntl.h> #include <kernel_stat.h> - #include <sysdep.h> -#include <sys/syscall.h> +#include <xstatconv.h> /* Get information about the file NAME in BUF. */ int -__lxstat (int vers, const char *name, struct stat *buf) +__lxstat64 (int vers, const char *name, struct stat64 *buf) { - if (vers == _STAT_VER_KERNEL) - return INLINE_SYSCALL (newfstatat, 4, AT_FDCWD, name, buf, - AT_SYMLINK_NOFOLLOW); - errno = EINVAL; - return -1; + switch (vers) + { + case _STAT_VER_KERNEL64: + return INLINE_SYSCALL_CALL (lstat64, name, buf); + + default: + { + struct kernel_stat kbuf; + int r = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); + if (r == 0) + return __xstat_conv (vers, &kbuf, buf); + return INLINE_SYSCALL_ERROR_RETURN_VALUE (-r); + } + } } +weak_alias (__lxstat64, __lxstat); +weak_alias (__lxstat64, __GI___lxstat); -hidden_def (__lxstat) -weak_alias (__lxstat, _lxstat); -#if XSTAT_IS_XSTAT64 -#undef __lxstat64 -strong_alias (__lxstat, __lxstat64); -hidden_ver (__lxstat, __lxstat64) -#endif +hidden_def (__lxstat64) diff --git a/sysdeps/unix/sysv/linux/arm/lxstat.c b/sysdeps/unix/sysv/linux/arm/lxstat.c deleted file mode 100644 index 0efa0aea49..0000000000 --- a/sysdeps/unix/sysv/linux/arm/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c deleted file mode 100644 index bd02631d68..0000000000 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c +++ /dev/null @@ -1,55 +0,0 @@ -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - <https://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <stddef.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <kernel_stat.h> - -#include <sysdep.h> -#include <sys/syscall.h> - -#if !XSTAT_IS_XSTAT64 -#include "overflow.h" -#include <statx_cp.h> - -/* Get information about the file NAME in BUF. */ -int -__lxstat (int vers, const char *name, struct stat *buf) -{ - if (vers == _STAT_VER_KERNEL) - { -#ifdef __NR_fstatat64 - int rc = INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, - AT_SYMLINK_NOFOLLOW); -#else - struct statx tmp; - int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, - AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, - STATX_BASIC_STATS, &tmp); - if (rc == 0) - __cp_stat64_statx ((struct stat64 *)buf, &tmp); -#endif - return rc ?: stat_overflow (buf); - } - errno = EINVAL; - return -1; -} -hidden_def (__lxstat) -#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c deleted file mode 100644 index 3eab0a1847..0000000000 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c +++ /dev/null @@ -1,66 +0,0 @@ -/* Copyright (C) 2011-2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - <https://www.gnu.org/licenses/>. */ - -/* Hide the prototype for __lxstat so that GCC will not complain about - the different function signature if it is aliased to __lxstat64. - If XSTAT_IS_XSTAT64 is set to non-zero then the stat and stat64 - structures have an identical layout but different type names. */ - -#define __lxstat __lxstat_disable - -#include <errno.h> -#include <stddef.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <kernel_stat.h> - -#include <sysdep.h> -#include <sys/syscall.h> - -#include <statx_cp.h> - -/* Get information about the file NAME in BUF. */ -int -__lxstat64 (int vers, const char *name, struct stat64 *buf) -{ - if (vers == _STAT_VER_KERNEL) - { -#ifdef __NR_fstatat64 - return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, - AT_SYMLINK_NOFOLLOW); -#else - struct statx tmp; - int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, - AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, - STATX_BASIC_STATS, &tmp); - if (rc == 0) - __cp_stat64_statx (buf, &tmp); - return rc; -#endif - } - - errno = EINVAL; - return -1; -} -hidden_def (__lxstat64) - -#undef __lxstat -#if XSTAT_IS_XSTAT64 -strong_alias (__lxstat64, __lxstat) -hidden_ver (__lxstat64, __lxstat) -#endif diff --git a/sysdeps/unix/sysv/linux/hppa/lxstat.c b/sysdeps/unix/sysv/linux/hppa/lxstat.c deleted file mode 100644 index 0efa0aea49..0000000000 --- a/sysdeps/unix/sysv/linux/hppa/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> diff --git a/sysdeps/unix/sysv/linux/i386/lxstat.c b/sysdeps/unix/sysv/linux/i386/lxstat.c deleted file mode 100644 index e960077893..0000000000 --- a/sysdeps/unix/sysv/linux/i386/lxstat.c +++ /dev/null @@ -1,60 +0,0 @@ -/* lxstat using old-style Unix lstat system call. - Copyright (C) 1991-2020 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 - <https://www.gnu.org/licenses/>. */ - -/* Ho hum, if xstat == xstat64 we must get rid of the prototype or gcc - will complain since they don't strictly match. */ -#define __lxstat64 __lxstat64_disable - -#include <errno.h> -#include <stddef.h> -#include <sys/stat.h> -#include <kernel_stat.h> - -#include <sysdep.h> -#include <sys/syscall.h> - -#include <xstatconv.h> - - -/* Get information about the file NAME in BUF. */ -int -__lxstat (int vers, const char *name, struct stat *buf) -{ - int result; - - if (vers == _STAT_VER_KERNEL) - return INLINE_SYSCALL (lstat, 2, name, buf); - - { - struct stat64 buf64; - - result = INTERNAL_SYSCALL_CALL (lstat64, name, &buf64); - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result))) - return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result)); - else - return __xstat32_conv (vers, &buf64, buf); - } -} - -hidden_def (__lxstat) -weak_alias (__lxstat, _lxstat); -#if XSTAT_IS_XSTAT64 -#undef __lxstat64 -strong_alias (__lxstat, __lxstat64); -hidden_ver (__lxstat, __lxstat64) -#endif diff --git a/sysdeps/unix/sysv/linux/lxstat.c b/sysdeps/unix/sysv/linux/lxstat.c index dcd685873d..dc63d20061 100644 --- a/sysdeps/unix/sysv/linux/lxstat.c +++ b/sysdeps/unix/sysv/linux/lxstat.c @@ -1,4 +1,4 @@ -/* lxstat using old-style Unix lstat system call. +/* lxstat using old-style Unix stat system call. Copyright (C) 1991-2020 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -16,45 +16,47 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* Ho hum, if xstat == xstat64 we must get rid of the prototype or gcc - will complain since they don't strictly match. */ -#define __lxstat64 __lxstat64_disable - -#include <errno.h> -#include <stddef.h> #include <sys/stat.h> +#include <fcntl.h> #include <kernel_stat.h> - #include <sysdep.h> -#include <sys/syscall.h> -#include <xstatconv.h> +#if !XSTAT_IS_XSTAT64 +# include <xstatconv.h> +# include <xstatover.h> /* Get information about the file NAME in BUF. */ int __lxstat (int vers, const char *name, struct stat *buf) { - if (vers == _STAT_VER_KERNEL) - return INLINE_SYSCALL (lstat, 2, name, buf); - -#if STAT_IS_KERNEL_STAT - return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); -#else - struct kernel_stat kbuf; - int result; - - result = INLINE_SYSCALL (lstat, 2, name, &kbuf); - if (result == 0) - result = __xstat_conv (vers, &kbuf, buf); - - return result; + switch (vers) + { + case _STAT_VER_KERNEL: + { +# if STAT_IS_KERNEL_STAT + /* New kABIs which uses generic pre 64-bit time Linux ABI, + e.g. csky, nios2 */ + int r = INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf, + AT_SYMLINK_NOFOLLOW); + return r ?: stat_overflow (buf); +# else + /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k, + microblaze, s390, sh, powerpc, and sparc. */ + return INLINE_SYSCALL_CALL (lstat, name, buf); +# endif + } + + default: + { +# if STAT_IS_KERNEL_STAT + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); +# else + struct stat64 buf64; + int r = INTERNAL_SYSCALL_CALL (lstat64, name, &buf64); + return r ?: __xstat32_conv (vers, &buf64, buf); #endif + } + } } - hidden_def (__lxstat) -weak_alias (__lxstat, _lxstat); -#if XSTAT_IS_XSTAT64 -#undef __lxstat64 -strong_alias (__lxstat, __lxstat64); -hidden_ver (__lxstat, __lxstat64) -#endif +#endif /* XSTAT_IS_XSTAT64 */ diff --git a/sysdeps/unix/sysv/linux/lxstat64.c b/sysdeps/unix/sysv/linux/lxstat64.c index 0ea8399d68..375013e9b1 100644 --- a/sysdeps/unix/sysv/linux/lxstat64.c +++ b/sysdeps/unix/sysv/linux/lxstat64.c @@ -1,5 +1,5 @@ /* lxstat64 using Linux lstat64 system call. - Copyright (C) 1997-2020 Free Software Foundation, Inc. + Copyright (C) 1991-2020 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 @@ -16,23 +16,65 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <errno.h> -#include <stddef.h> +#define __lxstat __redirect___lxstat #include <sys/stat.h> +#undef __lxstat +#include <fcntl.h> #include <kernel_stat.h> - #include <sysdep.h> -#include <sys/syscall.h> +#include <xstatconv.h> +#include <statx_cp.h> /* Get information about the file NAME in BUF. */ + int ___lxstat64 (int vers, const char *name, struct stat64 *buf) { - int result; - result = INLINE_SYSCALL (lstat64, 2, name, buf); - return result; +#if XSTAT_IS_XSTAT64 +# if defined __NR_lstat + /* Old 64-bit kABI, e.g. ia64, powerpc64*, s390x, sparc64, x86_64. */ + if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX) + return INLINE_SYSCALL_CALL (lstat, name, buf); +# elif defined __NR_newfstatat + /* New kABIs which uses generic 64-bit Linux ABI, e.g. aarch64, riscv64. */ + if (vers == _STAT_VER_KERNEL) + return INLINE_SYSCALL_CALL (newfstatat, AT_FDCWD, name, buf, + AT_SYMLINK_NOFOLLOW); +# else + /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */ + if (vers == _STAT_VER_KERNEL) + { + struct statx tmp; + int r = INLINE_SYSCALL_CALL (statx, AT_FDCWD, name, + AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, + STATX_BASIC_STATS, &tmp); + if (r == 0) + __cp_stat64_statx (buf, &tmp); + return r; + } +# endif +#else +# if STAT_IS_KERNEL_STAT + /* New kABIs which uses generic pre 64-bit time Linux ABI, + e.g. csky, nios2 */ + if (vers == _STAT_VER_KERNEL) + return INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf, + AT_SYMLINK_NOFOLLOW); +# else + /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k, + microblaze, s390, sh, mips32, powerpc32, and sparc32. */ + return INLINE_SYSCALL_CALL (lstat64, name, buf); +# endif /* STAT_IS_KERNEL_STAT */ +#endif /* XSTAT_IS_XSTAT64 */ + + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); } +#if XSTAT_IS_XSTAT64 +weak_alias (___lxstat64, __lxstat); +weak_alias (___lxstat64, __GI___lxstat); +#endif + #include <shlib-compat.h> #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) diff --git a/sysdeps/unix/sysv/linux/m68k/lxstat.c b/sysdeps/unix/sysv/linux/m68k/lxstat.c deleted file mode 100644 index 0efa0aea49..0000000000 --- a/sysdeps/unix/sysv/linux/m68k/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> diff --git a/sysdeps/unix/sysv/linux/microblaze/lxstat.c b/sysdeps/unix/sysv/linux/microblaze/lxstat.c deleted file mode 100644 index 0efa0aea49..0000000000 --- a/sysdeps/unix/sysv/linux/microblaze/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/lxstat.c b/sysdeps/unix/sysv/linux/mips/lxstat.c similarity index 60% rename from sysdeps/unix/sysv/linux/wordsize-64/lxstat.c rename to sysdeps/unix/sysv/linux/mips/lxstat.c index 156fbe7c64..eb07549adf 100644 --- a/sysdeps/unix/sysv/linux/wordsize-64/lxstat.c +++ b/sysdeps/unix/sysv/linux/mips/lxstat.c @@ -1,4 +1,4 @@ -/* lxstat using old-style Unix lstat system call. +/* lxstat using old-style Unix stat system call. Copyright (C) 1991-2020 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -16,30 +16,27 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* Ho hum, since xstat == xstat64 we must get rid of the prototype or gcc - will complain since they don't strictly match. */ -#define __lxstat64 __lxstat64_disable - -#include <errno.h> -#include <stddef.h> #include <sys/stat.h> - +#include <fcntl.h> +#include <kernel_stat.h> #include <sysdep.h> -#include <sys/syscall.h> +#include <xstatconv.h> -/* Get information about the file FD in BUF. */ +/* Get information about the file NAME in BUF. */ int __lxstat (int vers, const char *name, struct stat *buf) { - if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX) - return INLINE_SYSCALL (lstat, 2, name, buf); - - __set_errno (EINVAL); - return -1; + switch (vers) + { + case _STAT_VER_KERNEL: + return INLINE_SYSCALL_CALL (lstat, name, buf); + + default: + { + struct kernel_stat kbuf; + int r = INTERNAL_SYSCALL_CALL (lstat, name, &kbuf); + return r ?: __xstat_conv (vers, &kbuf, buf); + } + } } - hidden_def (__lxstat) -weak_alias (__lxstat, _lxstat); -#undef __lxstat64 -strong_alias (__lxstat, __lxstat64); -hidden_ver (__lxstat, __lxstat64) diff --git a/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c b/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c index 62d4fe70eb..28bac57e58 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c +++ b/sysdeps/unix/sysv/linux/mips/mips64/lxstat64.c @@ -16,28 +16,18 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <errno.h> -#include <stddef.h> #include <sys/stat.h> #include <kernel_stat.h> - #include <sysdep.h> -#include <sys/syscall.h> - #include <xstatconv.h> /* Get information about the file NAME in BUF. */ int __lxstat64 (int vers, const char *name, struct stat64 *buf) { - int result; struct kernel_stat kbuf; - - result = INLINE_SYSCALL (lstat, 2, name, &kbuf); - if (result == 0) - result = __xstat64_conv (vers, &kbuf, buf); - - return result; + int r = INLINE_SYSCALL_CALL (lstat, name, &kbuf); + return r ?: __xstat64_conv (vers, &kbuf, buf); } hidden_def (__lxstat64) diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c deleted file mode 100644 index 2371cd9719..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c +++ /dev/null @@ -1,2 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> - diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c b/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c deleted file mode 100644 index 0efa0aea49..0000000000 --- a/sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> diff --git a/sysdeps/unix/sysv/linux/sh/lxstat.c b/sysdeps/unix/sysv/linux/sh/lxstat.c deleted file mode 100644 index 2371cd9719..0000000000 --- a/sysdeps/unix/sysv/linux/sh/lxstat.c +++ /dev/null @@ -1,2 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> - diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c b/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c deleted file mode 100644 index 2371cd9719..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c +++ /dev/null @@ -1,2 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/lxstat.c> - diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c b/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c deleted file mode 100644 index 7f1e98e433..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../i386/lxstat.c" diff --git a/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c b/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c deleted file mode 100644 index bb5dbd0fff..0000000000 --- a/sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c +++ /dev/null @@ -1 +0,0 @@ -/* lxstat64 is in lxstat.c */
The LFS support is implemented on lxstat64.c, instead of lxstat.c for 64-bit architectures. The xstat.c implements the non-LFS and it is a no-op for !XSTAT_IS_XSTAT64. The generic non-LFS implementation handles two cases: 1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and nios): it issues __NR_fstat64 with AT_SYMLINK_NOFOLLOW plus handles the possible overflow off st_ino, st_size, or st_blocks. It only handles _STAT_VER_KERNEL. 2. Old KABIs with old non-LFS support (arm, i386, hppa, m68k, microblaze, s390, sh, powerpc, and sparc32). For _STAT_VER_KERNEL it issues __NR_lstat, otherwise it isseus __NR_lstat64 and convert to non-LFS stat struct and handle possible overflows on st_ino, st_size, or st_blocks. Also non-LFS mips is an outlier and it has its own implementation since _STAT_VER_LINUX requires a different conversion function (it uses the kernel_stat as the syscall argument since its exported ABI is different than the kernel one for both non-LFS and LFS implementation). The generic LFS implementation handles multiple cases: 1. XSTAT_IS_XSTAT64 being 1: 1.1. Old 64-bit kABI (ia64, powerpc64*, s390x, sparc64, x86_64): it issues __NR_lstat for _STAT_VER_KERNEL or _STAT_VER_LINUX. 1.2. New kABIs which uses generic 64-bit Linux ABI (aarch64 and riscv64): it issues __NR_newfstatat with AT_SYMLINK_NOFOLLOW and only for _STAT_VER_KERNEL. 1.3. New 32-bit kABIs with only 64-bit time_t support (arc and riscv32): it issues __NR_statx and covert to struct stat64. 2. Old ABIs with XSTAT_IS_XSTAT64 being 0: 2.1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and nios2): it issues __NR_fstatat64 for _STAT_VER_KERNEL. 2.2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k, microblaze, s390, sh, mips32, powerpc32, and sparc32): it issues __NR_lstat64. Also, two special cases requires specific LFS implementations: 1. alpha: it requires to handle _STAT_VER_KERNEL64 to issue __NR_lstat64 and use the kernel_stat with __NR_lstat otherwise. 2. mips64: as for non-LFS implementation its ABIs differ from glibc exported one, which requires a specific conversion function to handle the kernel_stat. Checked with a build for all affected ABIs. I also checked on x86_64, i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x. --- sysdeps/unix/sysv/linux/alpha/lxstat.c | 57 ---------------- .../{generic/lxstat.c => alpha/lxstat64.c} | 47 ++++++------- sysdeps/unix/sysv/linux/arm/lxstat.c | 1 - .../sysv/linux/generic/wordsize-32/lxstat.c | 55 ---------------- .../sysv/linux/generic/wordsize-32/lxstat64.c | 66 ------------------- sysdeps/unix/sysv/linux/hppa/lxstat.c | 1 - sysdeps/unix/sysv/linux/i386/lxstat.c | 60 ----------------- sysdeps/unix/sysv/linux/lxstat.c | 64 +++++++++--------- sysdeps/unix/sysv/linux/lxstat64.c | 58 +++++++++++++--- sysdeps/unix/sysv/linux/m68k/lxstat.c | 1 - sysdeps/unix/sysv/linux/microblaze/lxstat.c | 1 - .../sysv/linux/{wordsize-64 => mips}/lxstat.c | 37 +++++------ .../unix/sysv/linux/mips/mips64/lxstat64.c | 14 +--- .../sysv/linux/powerpc/powerpc32/lxstat.c | 2 - sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c | 1 - sysdeps/unix/sysv/linux/sh/lxstat.c | 2 - .../unix/sysv/linux/sparc/sparc32/lxstat.c | 2 - .../unix/sysv/linux/sparc/sparc64/lxstat.c | 1 - .../unix/sysv/linux/wordsize-64/lxstat64.c | 1 - 19 files changed, 126 insertions(+), 345 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/alpha/lxstat.c rename sysdeps/unix/sysv/linux/{generic/lxstat.c => alpha/lxstat64.c} (55%) delete mode 100644 sysdeps/unix/sysv/linux/arm/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c delete mode 100644 sysdeps/unix/sysv/linux/hppa/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/i386/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/m68k/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/microblaze/lxstat.c rename sysdeps/unix/sysv/linux/{wordsize-64 => mips}/lxstat.c (60%) delete mode 100644 sysdeps/unix/sysv/linux/powerpc/powerpc32/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/s390/s390-32/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/sh/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/sparc/sparc32/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/sparc/sparc64/lxstat.c delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/lxstat64.c