debian man page for error_temp

error_temp(3)						     Library Functions Manual						     error_temp(3)

NAME
       error_temp - identify soft syscall error codes

SYNTAX
       #include <error.h>

       int error_temp(e);

       int e;

DESCRIPTION
       error_temp returns 1 if syscall error code e is a soft error, 0 if it is a hard error.  Normally e is errno.

       A hard error is persistent: file not found, read-only file system, symbolic link loop, etc.

       A  soft error is usually transient: out of memory, out of disk space, I/O error, disk quota exceeded, connection refused, host unreachable,
       etc.

SEE ALSO
       error(3)

																     error_temp(3)