diff options
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 23b7d5489e53..a74d27f62040 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -3157,6 +3157,30 @@ filedesc_to_leader_alloc(struct filedesc_to_leader *old, struct filedesc *fdp, s return (fdtol); } +static int +sysctl_kern_proc_nfds(SYSCTL_HANDLER_ARGS) +{ + struct filedesc *fdp; + int i, count, slots; + + if (*(int *)arg1 != 0) + return (EINVAL); + + fdp = curproc->p_fd; + count = 0; + FILEDESC_SLOCK(fdp); + slots = NDSLOTS(fdp->fd_lastfile + 1); + for (i = 0; i < slots; i++) + count += bitcountl(fdp->fd_map[i]); + FILEDESC_SUNLOCK(fdp); + + return (SYSCTL_OUT(req, &count, sizeof(count))); +} + +static SYSCTL_NODE(_kern_proc, KERN_PROC_NFDS, nfds, + CTLFLAG_RD|CTLFLAG_MPSAFE, sysctl_kern_proc_nfds, + "Number of open file descriptors"); + /* * Get file structures globally. */ |