diff options
Diffstat (limited to 'libc/sysdeps/linux/common/xstatconv.c')
| -rw-r--r-- | libc/sysdeps/linux/common/xstatconv.c | 82 |
1 files changed, 9 insertions, 73 deletions
diff --git a/libc/sysdeps/linux/common/xstatconv.c b/libc/sysdeps/linux/common/xstatconv.c index 325b70550..ab0dcef14 100644 --- a/libc/sysdeps/linux/common/xstatconv.c +++ b/libc/sysdeps/linux/common/xstatconv.c @@ -49,102 +49,38 @@ void __xstat_conv(struct kernel_stat *kbuf, struct stat *buf) buf->st_mtime = kbuf->st_mtime; buf->st_ctime = kbuf->st_ctime; #ifdef STAT_HAVE_NSEC - buf->st_atime_nsec = kbuf->st_atime_nsec; - buf->st_mtime_nsec = kbuf->st_mtime_nsec; - buf->st_ctime_nsec = kbuf->st_ctime_nsec; + buf->st_atime_nsec = kbuf->st_atimensec; + buf->st_mtime_nsec = kbuf->st_mtimensec; + buf->st_ctime_nsec = kbuf->st_ctimensec; #endif } #if defined(__UCLIBC_HAS_LFS__) -/* OK, this is ugly, but not much we can do about it. - * - * The issue at hand is that the kernel introduced an ABI change between - * 2.4 and 2.6 for big endian machines on some architectures in stat64 with - * st_dev and st_rdev fields. Older kernels used 'short' but newer kernels - * use a 'long'. As if that wasn't fun enough, the location of st_blocks and - * its padding have swapped. So, when applicable, we need to detect and shift - * bits around and hope for the best. The kernel at least helps us out a bit - * because it will be sure to zero out all padding fields. - * - * Unimportant Note About Mis-detections: - * - if user is running a 2.4 system with the old ABI and they stat a file on - * a system which major 0 / minor 0. We can ignore this though because the - * kernel has major 0 reserved for non mountable devices (wh00t!) - * - if user is running a 2.6 system with the new ABI and they stat a file on - * a device whose st_dev fills up the lower 6 bytes into the upper 2 bytes - * which overlap. Again we should be able to safely ignore this because - * that means it'd be a pretty big ass (read: uncommon) major/minor combo :). - - Old [2.4]: -struct stat64 { - unsigned short st_dev; - unsigned char __pad0[10]; - ... - unsigned long st_blocks; - unsigned long __pad4; - ... - New [2.6]: -struct stat64 { - unsigned long long st_dev; - unsigned char __pad0[4]; - ... - unsigned long __pad4; - unsigned long st_blocks; - ... - - * sizeof(unsigned short) = 2 - * sizeof(unsigned long long) = 8 - */ -#include <endian.h> -#include <sys/utsname.h> -#if BYTE_ORDER == BIG_ENDIAN && \ - (defined(__ARMEB__)) /* || defined(__sh__) || defined(__sparc__))*/ -# define NEED_ABI_CHECK 1 -#else -# define NEED_ABI_CHECK 0 -#endif - void __xstat64_conv(struct kernel_stat64 *kbuf, struct stat64 *buf) { /* Convert to current kernel version of `struct stat64'. */ - -#if NEED_ABI_CHECK - if (!kbuf->st_dev.old_abi) { - /* new 2.6 ABI */ - buf->st_dev = kbuf->st_dev.new_abi; - buf->st_rdev = kbuf->st_rdev.new_abi; - buf->st_blocks = kbuf->st_blocks; - } else { - /* old 2.4 ABI */ - buf->st_dev = kbuf->st_dev.old_abi; - buf->st_rdev = kbuf->st_dev.old_abi; - buf->st_blocks = kbuf->__pad_st_blocks; - } -#else buf->st_dev = kbuf->st_dev; buf->st_ino = kbuf->st_ino; - buf->st_rdev = kbuf->st_rdev; -#endif - #ifdef _HAVE_STAT64___ST_INO buf->__st_ino = kbuf->__st_ino; #endif - buf->st_mode = kbuf->st_mode; buf->st_nlink = kbuf->st_nlink; buf->st_uid = kbuf->st_uid; buf->st_gid = kbuf->st_gid; + buf->st_rdev = kbuf->st_rdev; buf->st_size = kbuf->st_size; buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; buf->st_atime = kbuf->st_atime; buf->st_mtime = kbuf->st_mtime; buf->st_ctime = kbuf->st_ctime; - #ifdef STAT_HAVE_NSEC - buf->st_atime_nsec = kbuf->st_atime_nsec; - buf->st_mtime_nsec = kbuf->st_mtime_nsec; - buf->st_ctime_nsec = kbuf->st_ctime_nsec; + buf->st_atime_nsec = kbuf->st_atimensec; + buf->st_mtime_nsec = kbuf->st_mtimensec; + buf->st_ctime_nsec = kbuf->st_ctimensec; #endif } + #endif |