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tcsetpgrp(3p) — Linux manual page

TCSETPGRP(3P)           POSIX Programmer's ManualTCSETPGRP(3P)

PROLOG        top

       This manual page is part of the POSIX Programmer's Manual.  The       Linux implementation of this interface may differ (consult the       corresponding Linux manual page for details of Linux behavior), or       the interface may not be implemented on Linux.

NAME        top

       tcsetpgrp — set the foreground process group ID

SYNOPSIS        top

       #include <unistd.h>       int tcsetpgrp(intfildes, pid_tpgid_id);

DESCRIPTION        top

       If the process has a controlling terminal,tcsetpgrp() shall set       the foreground process group ID associated with the terminal topgid_id.  The application shall ensure that the file associated       withfildes is the controlling terminal of the calling process and       the controlling terminal is currently associated with the session       of the calling process. The application shall ensure that the       value ofpgid_id matches a process group ID of a process in the       same session as the calling process.       Attempts to usetcsetpgrp() from a process which is a member of a       background process group on afildes associated with its       controlling terminal shall cause the process group to be sent a       SIGTTOU signal. If the calling thread is blocking SIGTTOU signals       or the process is ignoring SIGTTOU signals, the process shall be       allowed to perform the operation, and no signal is sent.

RETURN VALUE        top

       Upon successful completion, 0 shall be returned. Otherwise, -1       shall be returned anderrno set to indicate the error.

ERRORS        top

       Thetcsetpgrp() function shall fail if:EBADFThefildes argument is not a valid file descriptor.EINVALThis implementation does not support the value in thepgid_id argument.EIOThe process group of the writing process is orphaned, the              calling thread is not blocking SIGTTOU, and the process is              not ignoring SIGTTOU.ENOTTYThe calling process does not have a controlling terminal,              or the file is not the controlling terminal, or the              controlling terminal is no longer associated with the              session of the calling process.EPERMThe value ofpgid_id is a value supported by the              implementation, but does not match the process group ID of              a process in the same session as the calling process.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

tcgetpgrp(3p)       The Base Definitions volume of POSIX.1‐2017,sys_types.h(0p),unistd.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 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 athttp://www.opengroup.org/unix/online.html .       Any typographical or formatting errors that appear in this page       are most likely to have been introduced during the conversion of       the source files to man page format. To report such errors, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017TCSETPGRP(3P)

Pages that refer to this page:unistd.h(0p), setpgid(3p), tcgetpgrp(3p)

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