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pipe (2)
  • >> pipe (2) ( Solaris man: Системные вызовы )
  • pipe (2) ( FreeBSD man: Системные вызовы )
  • pipe (2) ( Русские man: Системные вызовы )
  • pipe (2) ( Linux man: Системные вызовы )
  • pipe (3) ( POSIX man: Библиотечные вызовы )
  • pipe (7) ( Linux man: Макропакеты и соглашения )
  • pipe (8) ( Linux man: Команды системного администрирования )
  • Ключ pipe обнаружен в базе ключевых слов.
  •  

    NAME

    pipe - create
    an interprocess channel
     
    

    SYNOPSIS

    #include <unistd.h>
    
    int pipe(int fildes[2]);
    

     

    DESCRIPTION

    The pipe() function creates an I/O mechanism called a pipe and returns two file descriptors, fildes[0] and fildes[1]. The files associated with fildes[0] and fildes[1] are streams and are both opened for reading and writing. The O_NDELAY, O_NONBLOCK, and FD_CLOEXEC flags are cleared on both file descriptors. The fcntl(2) function can be used to set these flags.

    A read from fildes[0] accesses the data written to fildes[1] on a first-in-first-out (FIFO) basis and a read from fildes[1] accesses the data written to fildes[0] also on a FIFO basis.

    Upon successful completion pipe() marks for update the st_atime, st_ctime, and st_mtime fields of the pipe.  

    RETURN VALUES

    Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.  

    ERRORS

    The pipe() function will fail if:

    EMFILE

    More than {OPEN_MAX} file descriptors are already in use by this process.

    ENFILE

    The number of simultaneously open files in the system would exceed a system-imposed limit.

     

    ATTRIBUTES

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

    ATTRIBUTE TYPEATTRIBUTE VALUE

    Interface StabilityStandard

    MT-Level

     

    SEE ALSO

    sh(1), fcntl(2), fstat(2), getmsg(2), poll(2), putmsg(2), read(2), write(2), attributes(5), standards(5), streamio(7I)  

    NOTES

    Since a pipe is bi-directional, there are two separate flows of data. Therefore, the size (st_size) returned by a call to fstat(2) with argument fildes[0] or fildes[1] is the number of bytes available for reading from fildes[0] or fildes[1] respectively. Previously, the size (st_size) returned by a call to fstat() with argument fildes[1] (the write-end) was the number of bytes available for reading from fildes[0] (the read-end).


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    ATTRIBUTES
    SEE ALSO
    NOTES


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