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TCGETPGRP(3) BSD Library Functions Manual TCGETPGRP(3) NAME tcgetpgrp -- get foreground process group ID LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <unistd.h> pid_t tcgetpgrp(int fildes); DESCRIPTION The tcgetpgrp() function returns the value of the process group ID of the foreground process group associated with the terminal device. If there is no foreground process group, tcgetpgrp() returns an invalid process ID. ERRORS If an error occurs, tcgetpgrp() returns -1 and the global variable errno is set to indicate the error, as follows: [EBADF] The fildes argument is not a valid file descriptor. [ENOTTY] The calling process does not have a controlling termi-nal terminal nal or the underlying terminal device represented by fildes is not the controlling terminal. LEGACY SYNOPSIS #include <sys/types.h> #include <unistd.h> The include file <sys/types.h> is necessary. SEE ALSO setpgid(2), setsid(2), tcsetpgrp(3), compat(5) STANDARDS The tcgetpgrp() function is expected to be compliant with the IEEE Std 1003.1-1988 (``POSIX.1'') specification. BSD June 4, 1993 BSD |