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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2021-05-03 13:48:49 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-05-03 13:55:29 +0200 |
| commit | d0f115bb774b4c013be2852296836dadd2d73aa4 (patch) | |
| tree | 7df280596b69c1c37cb89d29389ee71f8bf68003 /lib | |
| parent | 015d5be8d66386fb9386f565b9d0e04ca78f8061 (diff) | |
| download | barebox-d0f115bb774b4c013be2852296836dadd2d73aa4.tar.gz barebox-d0f115bb774b4c013be2852296836dadd2d73aa4.tar.xz | |
vsprintf: introduce %m shorthand for "%s", strerror(errno)
We have many places across the code base that use either do
printf("%s..", errno_str()) or printf("%s..", strerror(errno).
We already have %pe support for printing arbitrary errors and it's not
much work to add %m to print errno as well. Do so.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210503114901.13095-5-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vsprintf.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 1d82adc733..237aab0c02 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -373,12 +373,21 @@ static char *pointer(const char *fmt, char *buf, const char *end, const void *pt return raw_pointer(buf, end, ptr, field_width, precision, flags); } +static char *errno_string(char *buf, const char *end, int field_width, int precision, int flags) +{ + return string(buf, end, strerror(errno), field_width, precision, flags); +} #else static char *pointer(const char *fmt, char *buf, const char *end, const void *ptr, int field_width, int precision, int flags) { return raw_pointer(buf, end, ptr, field_width, precision, flags); } + +static char *errno_string(char *buf, const char *end, int field_width, int precision, int flags) +{ + return buf; +} #endif /** @@ -569,6 +578,10 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) case 'u': break; + case 'm': + str = errno_string(str, end, field_width, precision, flags); + continue; + default: if (str < end) *str = '%'; |