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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2025-11-13 15:32:15 +0100 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2025-11-19 10:24:13 +0100 |
| commit | bccd5937447f8a2c9db0e4a92e5ecb641b8ce7de (patch) | |
| tree | 7ed133a34ed57374e9412f432fc66dfc350d3f2f /lib/vsprintf.c | |
| parent | 48e3694ae7fae347c1193c84f384f4ea41086075 (diff) | |
| download | tip-bccd5937447f8a2c9db0e4a92e5ecb641b8ce7de.tar.gz | |
lib/vsprintf: Add specifier for printing struct timespec64
A handful drivers want to print a content of the struct timespec64
in a format of %lld:%09ld. In order to make their lives easier, add
the respecting specifier directly to the printf() implementation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20251113150217.3030010-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index eb0cb11d0d126f..cdfb9224e0ad99 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1993,12 +1993,36 @@ char *time64_str(char *buf, char *end, const time64_t time, } static noinline_for_stack +char *timespec64_str(char *buf, char *end, const struct timespec64 *ts, + struct printf_spec spec, const char *fmt) +{ + static const struct printf_spec default_dec09_spec = { + .base = 10, + .field_width = 9, + .precision = -1, + .flags = ZEROPAD, + }; + + if (fmt[2] == 'p') + buf = number(buf, end, ts->tv_sec, default_dec_spec); + else + buf = time64_str(buf, end, ts->tv_sec, spec, fmt); + if (buf < end) + *buf = '.'; + buf++; + + return number(buf, end, ts->tv_nsec, default_dec09_spec); +} + +static noinline_for_stack char *time_and_date(char *buf, char *end, void *ptr, struct printf_spec spec, const char *fmt) { switch (fmt[1]) { case 'R': return rtc_str(buf, end, (const struct rtc_time *)ptr, spec, fmt); + case 'S': + return timespec64_str(buf, end, (const struct timespec64 *)ptr, spec, fmt); case 'T': return time64_str(buf, end, *(const time64_t *)ptr, spec, fmt); default: @@ -2462,9 +2486,11 @@ 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][s]' For time and date as represented by: + * - 't[RST][dt][r][s]' For time and date as represented by: * R struct rtc_time + * S struct timespec64 * T time64_t + * - 'tSp' For time represented by struct timespec64 printed as <seconds>.<nanoseconds> * - 'C' For a clock, it prints the name (Common Clock Framework) or address * (legacy clock framework) of the clock * - 'G' For flags to be printed as a collection of symbolic strings that would |