Symbol: fifo_fastioctl
usr/src/uts/common/fs/fifofs/fifovnops.c
1127
fifo_fastioctl(vp, cmd, arg, mode, cr, rvalp) :
usr/src/uts/common/fs/fifofs/fifovnops.c
94
static int fifo_fastioctl(vnode_t *, int, intptr_t, int, cred_t *, int *);