errno Info

[Steve Jardine]

Thank you sir.. That is exactly what I am looking for!

Steve

On Thu, 14 Feb 2008 06:50:10 -0600
vu pham <vu at sivell.com> wrote:

> Steve Jardine wrote:
> > All,
> > 
> >    I am using popen in some C code. It may set errno if it fails.If so, where can I find the value information? 
> > For instance, say the directory does not exist? Or the file does not exist?
> > 
> >     I know there is a header file I am too blind to find...
> > 
> 
> You can start from errno.h, which leads to this one for file operations' 
> error codes. ( there are some other files referred by errno.h but they 
> are not for file operations, I think ).
> ------------------------------------------------------
> /usr/include/asm-generic/errno-base.h ( on FC8)
> 
> #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 */
> #define ESRCH            3      /* No such process */
> #define EINTR            4      /* Interrupted system call */
> #define EIO              5      /* I/O error */
> #define ENXIO            6      /* No such device or address */
> #define E2BIG            7      /* Argument list too long */
> #define ENOEXEC          8      /* Exec format error */
> #define EBADF            9      /* Bad file number */
> #define ECHILD          10      /* No child processes */
> #define EAGAIN          11      /* Try again */
> #define ENOMEM          12      /* Out of memory */
> #define EACCES          13      /* Permission denied */
> #define EFAULT          14      /* Bad address */
> #define ENOTBLK         15      /* Block device required */
> #define EBUSY           16      /* Device or resource busy */
> #define EEXIST          17      /* File exists */
> #define EXDEV           18      /* Cross-device link */
> #define ENODEV          19      /* No such device */
> #define ENOTDIR         20      /* Not a directory */
> #define EISDIR          21      /* Is a directory */
> #define EINVAL          22      /* Invalid argument */
> #define ENFILE          23      /* File table overflow */
> #define EMFILE          24      /* Too many open files */
> #define ENOTTY          25      /* Not a typewriter */
> #define ETXTBSY         26      /* Text file busy */
> #define EFBIG           27      /* File too large */
> #define ENOSPC          28      /* No space left on device */
> #define ESPIPE          29      /* Illegal seek */
> #define EROFS           30      /* Read-only file system */
> #define EMLINK          31      /* Too many links */
> #define EPIPE           32      /* Broken pipe */
> #define EDOM            33      /* Math argument out of domain of func */
> #define ERANGE          34      /* Math result not representable */
> 
> #endif
> ~ 
>  
> 
> ~ 
> 
> ----------------------------------------------------------------------
> 
> 
> Vu
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> 


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