diff options
Diffstat (limited to 'lib/libc/string/strerror.3')
| -rw-r--r-- | lib/libc/string/strerror.3 | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/libc/string/strerror.3 b/lib/libc/string/strerror.3 index 037b138..2ed92d6 100644 --- a/lib/libc/string/strerror.3 +++ b/lib/libc/string/strerror.3 @@ -110,8 +110,15 @@ returns an error message string containing .Dq Li "Unknown error:\ " followed by the error number in decimal, while .Fn strerror_r -returns +leaves +.Fa strerrbuf +unchanged and returns .Er EINVAL . +Error numbers recognized by this implementation fall in +the range 0 <= +.Fa errnum +< +.Fa sys_nerr . .Pp If insufficient storage is provided in .Fa strerrbuf @@ -121,9 +128,11 @@ to contain the error string, .Fn strerror_r returns .Er ERANGE -and the contents of +and .Fa strerrbuf -are indeterminate. +will contain an error message that has been truncated and nul +terminated to fit the length specified by +.Fa buflen . .Pp The message strings can be accessed directly using the external array |
