diff options
Diffstat (limited to 'sys/kern/kern_descrip.c')
| -rw-r--r-- | sys/kern/kern_descrip.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 4914804..7e53062 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -2446,6 +2446,47 @@ sysctl_kern_file(SYSCTL_HANDLER_ARGS) SYSCTL_PROC(_kern, KERN_FILE, file, CTLTYPE_OPAQUE|CTLFLAG_RD, 0, 0, sysctl_kern_file, "S,xfile", "Entire file table"); +static int +export_vnode_for_sysctl(struct vnode *vp, int type, + struct kinfo_file *kif, struct filedesc *fdp, struct sysctl_req *req) +{ + int error; + char *fullpath, *freepath; + int vfslocked; + + bzero(kif, sizeof(*kif)); + kif->kf_structsize = sizeof(*kif); + + vref(vp); + kif->kf_fd = type; + kif->kf_type = KF_TYPE_VNODE; + /* This function only handles directories. */ + KASSERT(vp->v_type == VDIR, ("export_vnode_for_sysctl: vnode not directory")); + kif->kf_vnode_type = KF_VTYPE_VDIR; + + /* + * This is not a true file descriptor, so we set a bogus refcount + * and offset to indicate these fields should be ignored. + */ + kif->kf_ref_count = -1; + kif->kf_offset = -1; + + freepath = NULL; + fullpath = "-"; + FILEDESC_SUNLOCK(fdp); + vfslocked = VFS_LOCK_GIANT(vp->v_mount); + vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); + vn_fullpath(curthread, vp, &fullpath, &freepath); + vput(vp); + VFS_UNLOCK_GIANT(vfslocked); + strlcpy(kif->kf_path, fullpath, sizeof(kif->kf_path)); + if (freepath != NULL) + free(freepath, M_TEMP); + error = SYSCTL_OUT(req, kif, sizeof(*kif)); + FILEDESC_SLOCK(fdp); + return (error); +} + /* * Get per-process file descriptors for use by procstat(1), et al. */ @@ -2473,6 +2514,15 @@ sysctl_kern_proc_filedesc(SYSCTL_HANDLER_ARGS) PROC_UNLOCK(p); kif = malloc(sizeof(*kif), M_TEMP, M_WAITOK); FILEDESC_SLOCK(fdp); + if (fdp->fd_cdir != NULL) + export_vnode_for_sysctl(fdp->fd_cdir, KF_FD_TYPE_CWD, kif, + fdp, req); + if (fdp->fd_rdir != NULL) + export_vnode_for_sysctl(fdp->fd_rdir, KF_FD_TYPE_ROOT, kif, + fdp, req); + if (fdp->fd_jdir != NULL) + export_vnode_for_sysctl(fdp->fd_jdir, KF_FD_TYPE_JAIL, kif, + fdp, req); for (i = 0; i < fdp->fd_nfiles; i++) { if ((fp = fdp->fd_ofiles[i]) == NULL) continue; |
