TCSETPGRP(3) BSD Library Functions Manual TCSETPGRP(3)NAMEtcsetpgrp — set foreground process group ID
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
tcsetpgrp(int fildes, pid_t pgid_id);
DESCRIPTION
If the process has a controlling terminal, the tcsetpgrp() function sets
the foreground process group ID associated with the terminal device to
pgid_id. The terminal device associated with fildes must be the control‐
ling 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 be the same as the process group ID of a process in the
same session as the calling process.
RETURN VALUES
The tcsetpgrp() function returns the value 0 if successful; otherwise the
value -1 is returned and the global variable 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] An invalid value of pgid_id was specified.
[ENOTTY] The calling process does not have a controlling termi‐
nal, or the file represented by fildes is not the con‐
trolling terminal, or the controlling terminal is no
longer associated with the session of the calling
process.
[EPERM] The pgid_id argument does not match the process group
ID of a process in the same session as the calling
process.
LEGACY SYNOPSIS
#include <sys/types.h>
#include <unistd.h>
The include file <sys/types.h> is necessary.
SEE ALSOsetpgid(2), setsid(2), tcgetpgrp(3), compat(5)STANDARDS
The tcsetpgrp() function is expected to be compliant with the IEEE Std
1003.1-1988 (“POSIX.1”) specification.
BSD June 4, 1993 BSD
