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lib/vsprintf: Allow to override ISO 8601 date and time separator

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ISO 8601 defines 'T' as a separator between date and time. Though,
some ABIs use time and date with ' ' (space) separator instead.

Add a flavour to the %pt specifier to override default separator.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210511153958.34527-1-andriy.shevchenko@linux.intel.com
This commit is contained in:
Andy Shevchenko
2021-05-11 18:39:55 +03:00
committed by Petr Mladek
parent 7f3d08b255
commit 20bc8c1e97
3 changed files with 28 additions and 6 deletions
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22
lib/vsprintf.c
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@@ -1798,7 +1798,8 @@ char *rtc_str(char *buf, char *end, const struct rtc_time *tm,
struct printf_spec spec, const char *fmt)
{
bool have_t = true, have_d = true;
bool raw = false;
bool raw = false, iso8601_separator = true;
bool found = true;
int count = 2;
if (check_pointer(&buf, end, tm, spec))
@@ -1815,14 +1816,25 @@ char *rtc_str(char *buf, char *end, const struct rtc_time *tm,
break;
}
raw = fmt[count] == 'r';
do {
switch (fmt[count++]) {
case 'r':
raw = true;
break;
case 's':
iso8601_separator = false;
break;
default:
found = false;
break;
}
} while (found);
if (have_d)
buf = date_str(buf, end, tm, raw);
if (have_d && have_t) {
/* Respect ISO 8601 */
if (buf < end)
*buf = 'T';
*buf = iso8601_separator ? 'T' : ' ';
buf++;
}
if (have_t)
@@ -2261,7 +2273,7 @@ early_param("no_hash_pointers", no_hash_pointers_enable);
* - 'd[234]' For a dentry name (optionally 2-4 last components)
* - 'D[234]' Same as 'd' but for a struct file
* - 'g' For block_device name (gendisk + partition number)
* - 't[RT][dt][r]' For time and date as represented by:
* - 't[RT][dt][r][s]' For time and date as represented by:
* R struct rtc_time
* T time64_t
* - 'C' For a clock, it prints the name (Common Clock Framework) or address