08-15-2019
I think access time includes reads too, if its enabled. But its been so long since I've seen a system that had atimes enabled, I'm not 100% positive.
Unless you know for a fact atimes are enabled on your filesystem, they may not be meaningful. atimes are a lot of disk writes for something so rarely used, and often turned off. I usually see them disabled in Linux by default. (It's an option when mounting the filesystem - 'noatime'.)
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LEARN ABOUT DEBIAN
explain_utime_or_die
explain_utime_or_die(3) Library Functions Manual explain_utime_or_die(3)
NAME
explain_utime_or_die - change file times and report errors
SYNOPSIS
#include <libexplain/utime.h>
void explain_utime_or_die(const char *pathname, const struct utimbuf *times);
DESCRIPTION
The explain_utime_or_die function is used to call the utime(2) system call. On failure an explanation will be printed to stderr, obtained
from explain_utime(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_utime_or_die(pathname, times);
pathname
The pathname, exactly as to be passed to the utime(2) system call.
times The times, exactly as to be passed to the utime(2) system call.
Returns:
This function only returns on success. On failure, prints an explanation and exits.
SEE ALSO
utime(2)
change file last access and modification times
explain_utime(3)
explain utime(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2008 Peter Miller
explain_utime_or_die(3)