tcsetpgrp(3) [osf1 man page]
tcsetpgrp(3) Library Functions Manual tcsetpgrp(3) NAME
tcsetpgrp - Sets foreground process group ID LIBRARY
Standard C Library (libc.so, libc.a) SYNOPSIS
#include <unistd.h> int tcsetpgrp( int filedes, pid_t pgrp_id ); Application developers may want to specify an #include statement for <sys/types.h> before the one for <unistd.h> if programs are being developed for multiple platforms. The additional #include statement is not required on Tru64 UNIX systems or by ISO or X/Open standards, but may be required on other vendors' systems that conform to these standards. PARAMETERS
Specifies an open file descriptor. Specifies the process group identifier. DESCRIPTION
If the process has a controlling terminal, the tcsetpgrp() function sets the foreground process group ID associated with the terminal to the value of the pgrp_id parameter. The file associated with the filedes parameter must be the controlling terminal of the calling process, and the controlling terminal must be currently associated with the session of the calling process. The value of the pgrp_id parameter must match a process group ID of a process in the same session as the calling process. RETURN VALUES
Upon successful completion, a value of 0 (zero) is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error. ERRORS
The tcsetpgrp() function sets errno to the specified values for the following conditions: The filedes parameter is not a valid file descriptor. The pgrp_id parameter is invalid. The calling process does not have a controlling terminal, the file is not the controlling terminal, or the controlling terminal is no longer associated with the session of the calling process. The value of the pgrp_id parameter does not match the process group ID of a process in the same session as the calling process. RELATED INFORMATION
Functions: tcgetpgrp (3) Standards: standards(5) delim off tcsetpgrp(3)
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tcsetpgrp(3C) Standard C Library Functions tcsetpgrp(3C) NAME
tcsetpgrp - set foreground process group ID SYNOPSIS
#include <sys/types.h> #include <unistd.h> int tcsetpgrp(int fildes, pid_t pgid_id); DESCRIPTION
If the process has a controlling terminal, tcsetpgrp() will set the foreground process group ID associated with the terminal to pgid_id. The file associated with fildes must be the controlling terminal of the calling process and the controlling terminal must be currently associated with the session of the calling process. The value of pgid_id must match a process group ID of a process in the same session as the calling process. RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The tcsetpgrp() function will fail if: EBADF The fildes argument is not a valid file descriptor. EINVAL This implementation does not support the value in the pgid_id argument. ENOTTY The 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. EIO The process is not ignoring or holding SIGTTOU and is a member of an orphaned process group. EPERM The value of pgid_id does not match the process group ID of a process in the same session as the calling process. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-------------------------------+ |Interface Stability |Standard | +-----------------------------+-------------------------------+ |MT-Level |MT-Safe, and Async-Signal-Safe | +-----------------------------+-------------------------------+ SEE ALSO
tcgetpgrp(3C), attributes(5), standards(5), termio(7I) SunOS 5.10 14 Aug 2002 tcsetpgrp(3C)