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@xxxxxxxxxxxxxx>
---
lib/vsprintf.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 1d82adc73368..237aab0c02a1 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 = '%';
--
2.29.2
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