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Man Sections:Commands (1)System Calls (2)Library Functions (3)Device Drivers (4)File Formats (5)Miscellaneous (7)System Utilities (8)
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Index:
  __syscall(2)
  _exit(2)
  accept(2)
  access(2)
  acct(2)
  adjtime(2)
  aio_cancel(2)
  aio_error(2)
  aio_read(2)
  aio_return(2)
  aio_suspend(2)
  aio_waitcomplete(2)
  aio_write(2)
  bind(2)
  brk(2)
  chdir(2)
  chflags(2)
  chmod(2)
  chown(2)
  chroot(2)
  clock_getres(2)
  clock_gettime(2)
  clock_settime(2)
  close(2)
  connect(2)
  creat(2)
  dup(2)
  dup2(2)
  eaccess(2)
  errno(2)
  execve(2)
  extattr(2)
  extattr_delete_fd(2)
  extattr_delete_file(2)
  extattr_get_fd(2)
  extattr_get_file(2)
  extattr_set_fd(2)
  extattr_set_file(2)
  fchdir(2)
  fchflags(2)
  fchmod(2)
  fchown(2)
  fcntl(2)
  fhopen(2)
  fhstat(2)
  fhstatfs(2)
  flock(2)
  fork(2)
  fpathconf(2)
  fstat(2)
  fstatfs(2)
  fsync(2)
  ftruncate(2)
  futimes(2)
  getdents(2)
  getdirentries(2)
  getdtablesize(2)
  getegid(2)
  geteuid(2)
  getfh(2)
  getfsstat(2)
  getgid(2)
  getgroups(2)
  getitimer(2)
  getlogin(2)
  getpeername(2)
  getpgid(2)
  getpgrp(2)
  getpid(2)
  getppid(2)
  getpriority(2)
  getresgid(2)
  getresuid(2)
  getrlimit(2)
  getrusage(2)
  getsid(2)
  getsockname(2)
  getsockopt(2)
  gettimeofday(2)
  getuid(2)
  i386_get_ioperm(2)
  i386_get_ldt(2)
  i386_set_ioperm(2)
  i386_set_ldt(2)
  i386_vm86(2)
  intro(2)
  ioctl(2)
  issetugid(2)
  jail(2)
  jail_attach(2)
  kenv(2)
  kevent(2)
  kill(2)
  killpg(2)
  kldfind(2)
  kldfirstmod(2)
  kldload(2)
  kldnext(2)
  kldstat(2)
  kldsym(2)
  kldunload(2)
  kqueue(2)
  kse(2)
  kse_create(2)
  kse_exit(2)
  kse_release(2)
  kse_switchin(2)
  kse_thr_interrupt(2)
  kse_wakeup(2)
  ktrace(2)
  lchflags(2)
  lchmod(2)
  lchown(2)
  lgetfh(2)
  link(2)
  lio_listio(2)
  listen(2)
  lseek(2)
  lstat(2)
  lutimes(2)
  madvise(2)
  mincore(2)
  minherit(2)
  mkdir(2)
  mkfifo(2)
  mknod(2)
  mlock(2)
  mlockall(2)
  mmap(2)
  modfind(2)
  modfnext(2)
  modnext(2)
  modstat(2)
  mount(2)
  mprotect(2)
  msync(2)
  munlock(2)
  munlockall(2)
  munmap(2)
  nanosleep(2)
  nfssvc(2)
  nmount(2)
  ntp_adjtime(2)
  ntp_gettime(2)
  open(2)
  pathconf(2)
  pipe(2)
  poll(2)
  posix_madvise(2)
  pread(2)
  profil(2)
  ptrace(2)
  pwrite(2)
  quotactl(2)
  read(2)
  readlink(2)
  readv(2)
  reboot(2)
  recv(2)
  recvfrom(2)
  recvmsg(2)
  rename(2)
  revoke(2)
  rfork(2)
  rmdir(2)
  rtprio(2)
  sbrk(2)
  sched_get_priority_max(2)
  sched_get_priority_min(2)
  sched_getparam(2)
  sched_getscheduler(2)
  sched_rr_get_interval(2)
  sched_setparam(2)
  sched_setscheduler(2)
  sched_yield(2)
  select(2)
  semctl(2)
  semget(2)
  semop(2)
  send(2)
  sendfile(2)
  sendmsg(2)
  sendto(2)
  setegid(2)
  seteuid(2)
  setgid(2)
  setgroups(2)
  setitimer(2)
  setlogin(2)
  setpgid(2)
  setpgrp(2)
  setpriority(2)
  setregid(2)
  setresgid(2)
  setresuid(2)
  setreuid(2)
  setrlimit(2)
  setsid(2)
  setsockopt(2)
  settimeofday(2)
  setuid(2)
  shmat(2)
  shmctl(2)
  shmdt(2)
  shmget(2)
  shutdown(2)
  sigaction(2)
  sigaltstack(2)
  sigblock(2)
  sigmask(2)
  sigpause(2)
  sigpending(2)
  sigprocmask(2)
  sigreturn(2)
  sigsetmask(2)
  sigstack(2)
  sigsuspend(2)
  sigvec(2)
  sigwait(2)
  socket(2)
  socketpair(2)
  stat(2)
  statfs(2)
  swapoff(2)
  swapon(2)
  symlink(2)
  sync(2)
  sysarch(2)
  syscall(2)
  truncate(2)
  umask(2)
  undelete(2)
  unlink(2)
  unmount(2)
  utimes(2)
  utrace(2)
  uuidgen(2)
  vfork(2)
  wait(2)
  wait3(2)
  wait4(2)
  waitpid(2)
  write(2)
  writev(2)

getsid(2)

NAME

     getsid -- get process session


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <unistd.h>

     pid_t
     getsid(pid_t pid);


DESCRIPTION

     The session ID of the process identified by pid is returned by getsid().
     If pid is zero, getsid() returns the session ID of the current process.


RETURN VALUES

     Upon successful completion, the getsid() system call returns the session
     ID of the specified process; otherwise, it returns a value of -1 and sets
     errno to indicate an error.


ERRORS

     The getsid() system call will succeed unless:

     [ESRCH]		if there is no process with a process ID equal to pid.

     Note that an implementation may restrict this system call to processes
     within the same session ID as the calling process.


SEE ALSO

     getpgid(2), getpgrp(2), setpgid(2), setsid(2), termios(4)


HISTORY

     The getsid() system call appeared in FreeBSD 3.0.	The getsid() system
     call is derived from its usage in AT&T System V UNIX.

FreeBSD 5.4			August 19, 1997 		   FreeBSD 5.4

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