getpgrp2(2) [hpux man page]

getpid(2)							System Calls Manual							 getpid(2)

NAME

       getpid(), getpgid(), getpgrp(), getpgrp2(), getppid() - get process, process group and parent process ID.

SYNOPSIS

DESCRIPTION

       These functions return process, process group and parent process IDs, as follows:

	      Process group ID of the specified process.
				  If pid is zero, the call applies to the calling process.  Same result as

	      Process group ID of the calling process.

	      Process group ID of the specified process.
				  If pid is zero, the call applies to the calling process.  Same result as

	      Process ID of the calling process.

	      Parent process ID of the calling process.
				  If the parent process is the initialization process (known as the call returns 1.

   Security Restrictions
       The  system  call is subject to compartmental restrictions.  See compartments(5) for more information about compartmentalization on systems
       that support that feature.

       Compartmental restrictions can be overridden if the process possesses the privilege (PRIV_COMMALLOWED).	Processes owned by  the  superuser
       may  not  have  this privilege.	Processes owned by any user may have this privilege, depending on system configuration.  See privileges(5)
       for more information about privileged access on systems that support fine-grained privileges.

RETURN VALUE

       The functions return the following values:

	      Successful completion.
		     n is a nonnegative process ID, as described above.
	      Failure:
		     and only.	is set to indicate the error.

ERRORS

       If or fails, is set to one of the following values:

	      [EPERM]	     The current process and pid are not in the same session (see setsid(2)).

	      [ESRCH]	     No process can be found corresponding to that specified by pid.

AUTHOR

       and were developed by HP, AT&T, and the University of California, Berkeley.

SEE ALSO

       exec(2), fork(2), setpgid(2), setsid(2), signal(5).

STANDARDS CONFORMANCE

																	 getpid(2)

getpid(2)							   System Calls 							 getpid(2)

NAME

       getpid, getpgrp, getppid, getpgid - get process, process group, and parent process IDs

SYNOPSIS

       #include <unistd.h>

       pid_t getpid(void);

       pid_t getpgrp(void);

       pid_t getppid(void);

       pid_t getpgid(pid_t pid);

DESCRIPTION

       The getpid() function returns the process ID of the calling process.

       The getpgrp() function returns the process group ID of the calling process.

       The getppid() function returns the parent process ID of the calling process.

       The getpgid() function returns the process group ID of the process whose process ID is equal to pid, or the process group ID of the calling
       process, if pid is equal to 0.

RETURN VALUES

       Upon successful completion, these functions return the process group ID. Otherwise, getpgid() returns (pid_t)-1 and sets errno to  indicate
       the error.

ERRORS

       The getpgid() function will fail if:

       EPERM	       The  process  whose  process   ID is equal to pid is not in the same session as the calling process, and the implementation
		       does not allow access to the process group ID of that process from the calling process.

       ESRCH	       There is no process with a process ID equal to pid.

       The getpgid() function may fail if:

       EINVAL	       The value of the pid argument is invalid.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       intro(2), exec(2), fork(2), getsid(2), setpgid(2), setpgrp(2), setsid(2), signal(3C), attributes(5), standards(5)

SunOS 5.10							    28 Dec 1996 							 getpid(2)