+2005-09-16 Paul Eggert <eggert@cs.ucla.edu>
+
+ Don't filter time stamps through the resolution supported
+ by struct stat; keep them to full nanosecond resolution.
+ This affects behavior only on older hosts or file systems
+ that have lower-resolution time stamps.
+ * src/common.h (OLDER_STAT_TIME): Parenthesize arg.
+ (OLDER_TAR_STAT_TIME): New macro.
+ (code_timespec): New function.
+ (BILLION, LOG10_BILLION, TIMESPEC_STRSIZE_BOUND): New constants.
+ * src/compare.c (diff_file): Use full time stamp resolution.
+ * src/create.c (start_header, dump_file0): Likewise.
+ (start_header, dump_file0): Adjust to new structure layout.
+ (dump_regular_finish): Simplify by using timespec_cmp.
+ * src/extract.c (struct delayed_set_stat): Don't store stat info
+ that we don't need, to save space. All uses changed.
+ (struct delayed_set_stat, struct delayed_link, file_newer_p):
+ (create_placeholder_file, extract_link, apply_delayed_links):
+ Use full time stamp resolution.
+ (check_time): Use code_timespec rather than rolling our own code.
+ (set_stat, delay_set_stat): Arg now points to tar_stat_info to
+ avoid losing time information. All callers changed.
+ * src/list.c (read_and, decode_header, print_heaeder):
+ Use full time stamp resolution.
+ * src/misc.c (code_timespec): New function.
+ * src/tar.h (struct tar_stat_info): Record atime, mtime, ctime
+ separately, for benefit of hosts with lower resolution.
+ * src/update.c (update_archive): Use full time stamp resolution.
+ * src/xheader.c (code_time): Use new code_timespec function
+ to simplify code.
+ (atime_coder, atime_decoder, ctime_coder, ctime_decoder):
+ (mtime_coder, mtime_decoder): Use full time stamp resolution.
+
+ Report time stamps to full resolution in environment.
+ Report memory allocation failures rather than ignoring them.
+ * src/system.c (time_to_env): New function.
+ (oct_to_env, str_to_env, chr_to_env): Report memory allocation failures.
+ (stat_to_env): Report full resolution in time stamps.
+