[uclibc-ng-devel] [PATCH 1/4] fstatat64: define it as a wrapper of statx if the kernel does not support fstatat64 syscall

From: Yann Sionneau &lt;ysionneau(a)kalray.eu&gt; Define fstatat64 as a wrapper of statx if the kernel does not support fstatat64 syscall This is the case for non-legacy architectures that don't define __ARCH_WANT_NEW_STAT in their linux arch/xxx/include/asm/unistd.h Signed-off-by: Yann Sionneau &lt;ysionneau(a)kalray.eu&gt; --- libc/sysdeps/linux/common/fstatat64.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/libc/sysdeps/linux/common/fstatat64.c b/libc/sysdeps/linux/common/fstatat64.c index 711521a6a..836ed4114 100644 --- a/libc/sysdeps/linux/common/fstatat64.c +++ b/libc/sysdeps/linux/common/fstatat64.c @@ -43,5 +43,28 @@ int fstatat64(int fd, const char *file, struct stat64 *buf, int flag) } libc_hidden_def(fstatat64) #else + +#if defined(__NR_statx) && defined(__UCLIBC_HAVE_STATX__) +# include <sys/stat.h> +# include <statx_cp.h> +# include <fcntl.h> // for AT_NO_AUTOMOUNT + +int fstatat64(int fd, const char *file, struct stat64 *buf, int flag) +{ + struct statx tmp; + + int r = INLINE_SYSCALL(statx, 5, fd, file, AT_NO_AUTOMOUNT | flag, + STATX_BASIC_STATS, &tmp); + + if (r != 0) + return r; + + __cp_stat_statx ((struct stat *)buf, &tmp); + + return 0; +} +libc_hidden_def(fstatat64) +#endif + /* should add emulation with fstat64() and /proc/self/fd/ ... */ #endif -- 2.42.0