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ea_open(3exacct)

ea...n(3EXACCT)Extended Accounting File Access Library Functionsea...n(3EXACCT)

NAME
       ea_open, ea_close - open or close exacct files

SYNOPSIS
       cc [ flag... ] file... -lexacct [ library... ]
       #include <exacct.h>

       int ea_open(ea_file_t *ef, char *name, char *creator, int aflags,
            int oflags, mode_t mode);


       int ea_close(ea_file_t *ef);

DESCRIPTION
       The  ea_open() function provides structured access to exacct files. The
       aflags argument contains the appropriate exacct flags necessary to  de‐
       scribe  the file. The oflags and mode arguments contain the appropriate
       flags and mode to open the file; see <fcntl.h>. If ea_open() is invoked
       with EO_HEAD specified in aflags, the resulting file is opened with the
       object cursor located at the first object of the file. If ea_open()  is
       invoked  with EO_TAIL specified in aflags, the resulting file is opened
       with the object cursor positioned beyond the last object in  the  file.
       If  EO_NO_VALID_HDR  is  set  in aflags along with EO_HEAD, the initial
       header record will be returned as the first item read  from  the  file.
       When creating a file, the creator argument should be set (system gener‐
       ated  files  use the value "SunOS"); when reading a file, this argument
       should be set to NULL if no validation is required; otherwise it should
       be set to the expected value in the file.


       The ea_close() function closes an open exacct file.

RETURN VALUES
       Upon successful completion, ea_open() and ea_close() return  0.  Other‐
       wise  they  return −1 and call ea_error(3EXACCT) to return the extended
       accounting error value describing the error.

ERRORS
       The ea_open() and ea_close() functions may fail if:

       EXR_SYSCALL_FAIL    A system call invoked by the function  failed.  The
                           errno  variable contains the error value set by the
                           underlying call.



       The ea_open() function may fail if:

       EXR_CORRUPT_FILE    The file referred to by name is not a valid  exacct
                           file.


       EXR_NO_CREATOR      In  the case of file creation, the creator argument
                           was NULL. In the case of opening an existing  file,
                           a  creator argument was not NULL and does not match
                           the creator item of the exacct file.


       EXR_UNKN_VERSION    The file referred to by name uses  an  exacct  file
                           version that cannot be processed by this library.


USAGE
       The exacct file format can be used to represent data other than that in
       the  extended  accounting format. By using a unique creator type in the
       file header, application writers can develop their own format suited to
       the needs of their application.

EXAMPLES
       Example 1 Open and close exacct file.



       The following example opens  the  extended  accounting  data  file  for
       processes. The exacct file is then closed.


         #include <exacct.h>

         ea_file_t ef;
         if (ea_open(&ef, "/var/adm/exacct/proc", NULL, EO_HEAD,
             O_RDONLY, 0) == -1)
                 exit(1);
         (void) ea_close(&ef);


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       tab()  box; lw(2.47i) |lw(3.03i) lw(2.47i) |lw(3.03i) ATTRIBUTE TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe


SEE ALSO
       ea_pack_object(3EXACCT),    ea_error(3EXACCT),    ea_set_item(3EXACCT),
       libexacct(3LIB), attributes(7)

Oracle Solaris 11.4               29 Nov 2001                  ea...n(3EXACCT)
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