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getuid (3)
  • getuid (2) ( Solaris man: Системные вызовы )
  • getuid (2) ( FreeBSD man: Системные вызовы )
  • getuid (2) ( Русские man: Системные вызовы )
  • getuid (2) ( Linux man: Системные вызовы )
  • getuid (3) ( Solaris man: Библиотечные вызовы )
  • >> getuid (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    getuid - get a real user ID
     
    

    SYNOPSIS

    #include <unistd.h>

    uid_t getuid(void);
     

    DESCRIPTION

    The getuid() function shall return the real user ID of the calling process.  

    RETURN VALUE

    The getuid() function shall always be successful and no return value is reserved to indicate the error.  

    ERRORS

    No errors are defined.

    The following sections are informative.  

    EXAMPLES

     

    Setting the Effective User ID to the Real User ID

    The following example sets the effective user ID and the real user ID of the current process to the real user ID of the caller.

    
    #include <unistd.h>
    #include <sys/types.h>
    ...
    setreuid(getuid(), getuid());
    ...
    
    
     

    APPLICATION USAGE

    None.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    getegid() , geteuid() , getgid() , setegid() , seteuid() , setgid() , setregid() , setreuid() , setuid() , the Base Definitions volume of IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    Setting the Effective User ID to the Real User ID
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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