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tcgetpgrp (3)
  • >> tcgetpgrp (3) ( Solaris man: Библиотечные вызовы )
  • tcgetpgrp (3) ( FreeBSD man: Библиотечные вызовы )
  • tcgetpgrp (3) ( Русские man: Библиотечные вызовы )
  • tcgetpgrp (3) ( Linux man: Библиотечные вызовы )
  • tcgetpgrp (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    tcgetpgrp - get foreground process group ID
     
    

    SYNOPSIS

    #include <sys/types.h>
    #include <unistd.h>
    
    pid_t tcgetpgrp(int fildes);
    

     

    DESCRIPTION

    The tcgetpgrp() function will return the value of the process group ID of the foreground process group associated with the terminal.

    If there is no foreground process group, tcgetpgrp() returns a value greater than 1 that does not match the process group ID of any existing process group.

    The tcgetpgrp() function is allowed from a process that is a member of a background process group; however, the information may be subsequently changed by a process that is a member of a foreground process group.  

    RETURN VALUES

    Upon successful completion, tcgetpgrp() returns the value of the process group ID of the foreground process associated with the terminal. Otherwise, -1 is returned and errno is set to indicate the error.  

    ERRORS

    The tcgetpgrp() function will fail if:

    EBADF

    The fildes argument is not a valid file descriptor.

    ENOTTY

    The calling process does not have a controlling terminal, or the file is not the controlling terminal.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    Interface StabilityStandard

    MT-Level

     

    SEE ALSO

    setpgid(2), setsid(2), tcsetpgrp(3C), attributes(5), standards(5), termio(7I)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    ATTRIBUTES
    SEE ALSO


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