From aa03f722f3b994aaf81e72a8904bf33196780930 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 20 Jul 2020 16:02:04 -0300 Subject: linux: Add {f}stat{at} y2038 support A new struct __stat{64}_t64 type is added with the required __timespec64 time definition. Only LFS is added, 64-bit time with 32-bit offsets is not supposed to be supported (no existing glibc configuration supports such a combination). It is done with an extra __NR_statx call plus a conversion to the new __stat{64}_t64 type. The statx call is done only for 32-bit time_t ABIs. Internally some extra routines to copy from/to struct stat{64} to struct __stat{64} used on multiple implementations (stat, fstat, lstat, and fstatat) are added on a extra implementation (stat_t64_cp.c). Alse some extra routines to copy from statx to __stat{64} is added on statx_cp.c. 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/lstat64.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'sysdeps/unix/sysv/linux/lstat64.c') diff --git a/sysdeps/unix/sysv/linux/lstat64.c b/sysdeps/unix/sysv/linux/lstat64.c index e5f02e9822..971ab8469d 100644 --- a/sysdeps/unix/sysv/linux/lstat64.c +++ b/sysdeps/unix/sysv/linux/lstat64.c @@ -19,19 +19,32 @@ #define __lstat __redirect___lstat #define lstat __redirect_lstat #include -#undef __lstat -#undef lstat #include #include +#include + +int +__lstat64_time64 (const char *file, struct __stat64_t64 *buf) +{ + return __fstatat64_time64 (AT_FDCWD, file, buf, AT_SYMLINK_NOFOLLOW); +} +#if __TIMESIZE != 64 +hidden_def (__lstat64_time64) int __lstat64 (const char *file, struct stat64 *buf) { - return __fstatat64 (AT_FDCWD, file, buf, AT_SYMLINK_NOFOLLOW); + struct __stat64_t64 st_t64; + return __lstat64_time64 (file, &st_t64) + ?: __cp_stat64_t64_stat64 (&st_t64, buf); } +#endif hidden_def (__lstat64) weak_alias (__lstat64, lstat64) +#undef __lstat +#undef lstat + #if XSTAT_IS_XSTAT64 strong_alias (__lstat64, __lstat) weak_alias (__lstat64, lstat) -- cgit 1.4.1