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make fstatat fill in old time32 stat fields too

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here _REDIR_TIME64 is used as an indication that there's an old ABI,
and thereby the old time32 timespec fields of struct stat.

keeping struct stat compatible and providing both versions of the
timespec fields is done so that ftw/nftw does not need painful compat
shims, and (more importantly) so that similar interfaces between pairs
of libc consumers (applications/libraries) will be less likely to
break when one has been rebuilt for time64 but the other has not.
This commit is contained in:
Rich Felker 2019-08-01 21:33:57 -04:00
parent 50018f92f7
commit 0961bb9416
1 changed files with 16 additions and 0 deletions
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16
src/stat/fstatat.c
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@ -57,6 +57,14 @@ static int fstatat_statx(int fd, const char *restrict path, struct stat *restric
.st_mtim.tv_nsec = stx.stx_mtime.tv_nsec,
.st_ctim.tv_sec = stx.stx_ctime.tv_sec,
.st_ctim.tv_nsec = stx.stx_ctime.tv_nsec,
#if _REDIR_TIME64
.__st_atim32.tv_sec = stx.stx_atime.tv_sec,
.__st_atim32.tv_nsec = stx.stx_atime.tv_nsec,
.__st_mtim32.tv_sec = stx.stx_mtime.tv_sec,
.__st_mtim32.tv_nsec = stx.stx_mtime.tv_nsec,
.__st_ctim32.tv_sec = stx.stx_ctime.tv_sec,
.__st_ctim32.tv_nsec = stx.stx_ctime.tv_nsec,
#endif
};
return 0;
}
@ -110,6 +118,14 @@ static int fstatat_kstat(int fd, const char *restrict path, struct stat *restric
.st_mtim.tv_nsec = kst.st_mtime_nsec,
.st_ctim.tv_sec = kst.st_ctime_sec,
.st_ctim.tv_nsec = kst.st_ctime_nsec,
#if _REDIR_TIME64
.__st_atim32.tv_sec = kst.st_atime_sec,
.__st_atim32.tv_nsec = kst.st_atime_nsec,
.__st_mtim32.tv_sec = kst.st_mtime_sec,
.__st_mtim32.tv_nsec = kst.st_mtime_nsec,
.__st_ctim32.tv_sec = kst.st_ctime_sec,
.__st_ctim32.tv_nsec = kst.st_ctime_nsec,
#endif
};
return 0;