Provided by: libexplain-dev_1.4.D001-12_amd64 bug

NAME

       explain_closedir - explain closedir(3) errors

SYNOPSIS

       #include <libexplain/closedir.h>
       const char *explain_closedir(DIR *dir);
       const char *explain_errno_closedir(int errnum, DIR *dir);
       void explain_message_closedir(char *message, int message_size, DIR *dir);
       void  explain_message_errno_closedir(char  *message,  int  message_size,  int  errnum, DIR
       *dir);

DESCRIPTION

       These functions may be used to obtain explanations for errors returned by the  closedir(3)
       system call.

   explain_closedir
       const char *explain_closedir(DIR *dir);

       The explain_closedir function is used to obtain an explanation of an error returned by the
       closedir(3)  system  call.   The  least  the  message  will  contain  is  the   value   of
       strerror(errno),  but usually it will do much better, and indicate the underlying cause in
       more detail.

       The errno global variable will be used to obtain the error value to be decoded.

       This function is intended to be used in a fashion similar to the following example:
              if (closedir(dir) < 0)
              {
                  fprintf(stderr, "%s\n", explain_closedir(dir));
                  exit(EXIT_FAILURE);
              }

       dir     The original dir, exactly as passed to the closedir(3) system call.

       Returns:
               The message explaining the error.  This message buffer is shared by all libexplain
               functions  which  do  not  supply  a  buffer in their argument list.  This will be
               overwritten by the next call to any libexplain function which shares this  buffer,
               including other threads.

       Note:  This  function  is  not  thread  safe, because it shares a return buffer across all
       threads, and many other functions in this library.

   explain_errno_closedir
       const char *explain_errno_closedir(int errnum, DIR *dir);

       The explain_errno_closedir function is used to obtain an explanation of an error  returned
       by  the  closedir(3)  system  call.   The  least  the message will contain is the value of
       strerror(errnum), but usually it will do much better, and indicate the underlying cause in
       more detail.

       This function is intended to be used in a fashion similar to the following example:
              if (closedir(dir) < 0)
              {
                  int err = errno;
                  fprintf(stderr, "%s\n", explain_errno_closedir(err, dir));
                  exit(EXIT_FAILURE);
              }

       errnum  The  error  value  to  be decoded, usually obtained from the errno global variable
               just before this function is called.  This is necessary if you need  to  call  any
               code  between the system call to be explained and this function, because many libc
               functions will alter the value of errno.

       dir     The original dir, exactly as passed to the closedir(3) system call.

       Returns:
               The message explaining the error.  This message buffer is shared by all libexplain
               functions  which  do  not  supply  a  buffer in their argument list.  This will be
               overwritten by the next call to any libexplain function which shares this  buffer,
               including other threads.

       Note:  This  function  is  not  thread  safe, because it shares a return buffer across all
       threads, and many other functions in this library.

   explain_message_closedir
       void explain_message_closedir(char *message, int message_size, DIR *dir);

       The explain_message_closedir function may be used to  obtain an explanation  of  an  error
       returned  by the closedir(3) system call.  The least the message will contain is the value
       of strerror(errno), but usually it will do much better, and indicate the underlying  cause
       in more detail.

       The errno global variable will be used to obtain the error value to be decoded.

       This function is intended to be used in a fashion similar to the following example:
              if (closedir(dir) < 0)
              {
                  char message[3000];
                  explain_message_closedir(message, sizeof(message), dir);
                  fprintf(stderr, "%s\n", message);
                  exit(EXIT_FAILURE);
              }

       message The location in which to store the returned message.  If a suitable message return
               buffer is supplied, this function is thread safe.

       message_size
               The size in bytes of the location in which to store the returned message.

       dir     The original dir, exactly as passed to the closedir(3) system call.

   explain_message_errno_closedir
       void explain_message_errno_closedir(char  *message,  int  message_size,  int  errnum,  DIR
       *dir);

       The  explain_message_errno_closedir  function  may  be used to obtain an explanation of an
       error returned by the closedir(3) system call.  The least the message will contain is  the
       value of strerror(errnum), but usually it will do much better, and indicate the underlying
       cause in more detail.

       This function is intended to be used in a fashion similar to the following example:
              if (closedir(dir) < 0)
              {
                  int err = errno;
                  char message[3000];
                  explain_message_errno_closedir(message, sizeof(message), err, dir);
                  fprintf(stderr, "%s\n", message);
                  exit(EXIT_FAILURE);
              }

       message The location in which to store the returned message.  If a suitable message return
               buffer is supplied, this function is thread safe.

       message_size
               The size in bytes of the location in which to store the returned message.

       errnum  The  error  value  to  be decoded, usually obtained from the errno global variable
               just before this function is called.  This is necessary if you need  to  call  any
               code  between the system call to be explained and this function, because many libc
               functions will alter the value of errno.

       dir     The original dir, exactly as passed to the closedir(3) system call.

SEE ALSO

       closedir(3)
               close a directory

       explain_closedir_or_die(3)
               close a directory and report errors

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2008 Peter Miller

                                                                              explain_closedir(3)