[uclibc-ng-devel] [PATCH 4/4] fstatat: add wrapper that uses statx for non-legacy arch

From: Yann Sionneau &lt;ysionneau(a)kalray.eu&gt; Add fstatat wrapper that uses statx for non-legacy arch. This allows non-legacy arch to opt-out from defining the old stat* syscalls by not defining __ARCH_WANT_NEW_STAT in their arch/xxx/include/asm/unistd.h Signed-off-by: Yann Sionneau &lt;ysionneau(a)kalray.eu&gt; --- libc/sysdeps/linux/common/fstatat.c | 39 +++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/libc/sysdeps/linux/common/fstatat.c b/libc/sysdeps/linux/common/fstatat.c index 13673d76c..db4a8327f 100644 --- a/libc/sysdeps/linux/common/fstatat.c +++ b/libc/sysdeps/linux/common/fstatat.c @@ -31,5 +31,44 @@ int fstatat(int fd, const char *file, struct stat *buf, int flag) } libc_hidden_def(fstatat) #else + +#if defined(__NR_statx) +#include <sys/sysmacros.h> // for makedev + +int fstatat(int fd, const char *file, struct stat *buf, int flag) +{ + int ret; + struct statx tmp; + + ret = INLINE_SYSCALL(statx, 5, fd, file, flag, + STATX_BASIC_STATS, &tmp); + if (ret != 0) + return ret; + + *buf = (struct stat) { + .st_dev = makedev(tmp.stx_dev_major, tmp.stx_dev_minor), + .st_ino = tmp.stx_ino, + .st_mode = tmp.stx_mode, + .st_nlink = tmp.stx_nlink, + .st_uid = tmp.stx_uid, + .st_gid = tmp.stx_gid, + .st_rdev = makedev(tmp.stx_rdev_major, tmp.stx_rdev_minor), + .st_size = tmp.stx_size, + .st_blksize = tmp.stx_blksize, + .st_blocks = tmp.stx_blocks, + .st_atim.tv_sec = tmp.stx_atime.tv_sec, + .st_atim.tv_nsec = tmp.stx_atime.tv_nsec, + .st_mtim.tv_sec = tmp.stx_mtime.tv_sec, + .st_mtim.tv_nsec = tmp.stx_mtime.tv_nsec, + .st_ctim.tv_sec = tmp.stx_ctime.tv_sec, + .st_ctim.tv_nsec = tmp.stx_ctime.tv_nsec, + }; + + return ret; +} +libc_hidden_def(fstatat) + +#endif + /* should add emulation with fstat() and /proc/self/fd/ ... */ #endif -- 2.42.0