[ILUG] [TOTD] find error corresponding to number

[Stephen Shirley]

Stephen Reilly wrote:
> The \< and \> will make sure the number is surrounded by whitespace.
> I choose 12 in the first place to show retrieval of a subset and
> omision of its superset i.e. 112 didn't appear in the list. So 1
> gives:
> 
> grep "\<1\>" errno.h #define EPERM            1      /* Operation not
> permitted */
> 
> It would be the relevant one which contains all the #defines, not the
> header file with code in it. E.g.
> /services/kernel/kernels/linux-2.4.25/include/asm-i386/errno.h
> 
> Later, Steve

Ah, but certainly on this debian box there _is_ no one such header file...

diamond at fand:/usr/include/asm-generic(0)$ head -10 errno.h
#ifndef _ASM_GENERIC_ERRNO_H
#define _ASM_GENERIC_ERRNO_H

#include <asm-generic/errno-base.h>

#define EDEADLK         35      /* Resource deadlock would occur */
#define ENAMETOOLONG    36      /* File name too long */
#define ENOLCK          37      /* No record locks available */
#define ENOSYS          38      /* Function not implemented */
#define ENOTEMPTY       39      /* Directory not empty */


diamond at fand:/usr/include/asm-generic(0)$ head -5 errno-base.h
#ifndef _ASM_GENERIC_ERRNO_BASE_H
#define _ASM_GENERIC_ERRNO_BASE_H

#define EPERM            1      /* Operation not permitted */
#define ENOENT           2      /* No such file or directory */


Also, as a nit pick, you should not be using the kernel headers, but 
rather the headers of the kernel your glibc was compiled against, which 
should be under /usr/include/{bits,asm,asm-generic,linux}

Steve