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setresgid (2)
  • >> setresgid (2) ( FreeBSD man: Системные вызовы )
  • setresgid (2) ( Русские man: Системные вызовы )
  • setresgid (2) ( Linux man: Системные вызовы )

  • BSD mandoc
     

    NAME

    
    
    getresgid
    
     
    getresuid
    
     
    setresgid
    
     
    setresuid
    
     - get or set real, effective and saved user or group ID
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <unistd.h>
    int getresgid (gid_t *rgid gid_t *egid gid_t *sgid);
    int getresuid (uid_t *ruid uid_t *euid uid_t *suid);
    int setresgid (gid_t rgid gid_t egid gid_t sgid);
    int setresuid (uid_t ruid uid_t euid uid_t suid);
     

    DESCRIPTION

    The setresuid ();
    system call sets the real, effective and saved user IDs of the current process. The analogous setresgid ();
    sets the real, effective and saved group IDs.

    Privileged processes may set these IDs to arbitrary values. Unprivileged processes are restricted in that each of the new IDs must match one of the current IDs.

    Passing -1 as an argument causes the corresponding value to remain unchanged.

    The getresgid ();
    and getresuid ();
    calls retrieve the real, effective, and saved group and user IDs of the current process, respectively.  

    RETURN VALUES

    Rv -std  

    ERRORS

    Bq Er EPERM
    The calling process was not privileged and tried to change one or more IDs to a value which was not the current real ID, the current effective ID nor the current saved ID.
    Bq Er EFAULT
    An address passed to getresgid ();
    or getresuid ();
    was invalid.

     

    SEE ALSO

    getegid(2), geteuid(2), getgid(2), getuid(2), issetugid(2), setgid(2), setregid(2), setreuid(2), setuid(2)  

    STANDARDS

    These system calls are not available on many platforms. They exist in Fx to support Linux binaries linked against GNU libc2.  

    HISTORY

    These functions first appeared in HP-UX.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    STANDARDS
    HISTORY


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