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/stat64.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) (limited to 'sysdeps/unix/sysv/linux/stat64.c') diff --git a/sysdeps/unix/sysv/linux/stat64.c b/sysdeps/unix/sysv/linux/stat64.c index 2f40037c2c..bd8b17ac49 100644 --- a/sysdeps/unix/sysv/linux/stat64.c +++ b/sysdeps/unix/sysv/linux/stat64.c @@ -19,16 +19,30 @@ #define __stat __redirect___stat #define stat __redirect_stat #include -#undef __stat -#undef stat #include #include +#include + +int +__stat64_time64 (const char *file, struct __stat64_t64 *buf) +{ + return __fstatat64_time64 (AT_FDCWD, file, buf, 0); +} +#if __TIMESIZE != 64 +hidden_def (__stat64_time64) int __stat64 (const char *file, struct stat64 *buf) { - return __fstatat64 (AT_FDCWD, file, buf, 0); + struct __stat64_t64 st_t64; + return __stat64_time64 (file, &st_t64) + ?: __cp_stat64_t64_stat64 (&st_t64, buf); } +#endif + +#undef __stat +#undef stat + hidden_def (__stat64) weak_alias (__stat64, stat64) -- cgit 1.4.1