From f006524d6d696cc2a10b9e90a9a6ea412f1839eb Mon Sep 17 00:00:00 2001 From: Konstantin Belousov Date: Sat, 20 Jan 2024 00:37:39 +0200 Subject: [PATCH] kcmp(2): implement for procdesc Reviewed by: brooks, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D43518 --- sys/kern/sys_procdesc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sys/kern/sys_procdesc.c b/sys/kern/sys_procdesc.c index 419ff928a8a2..90022186d1ff 100644 --- a/sys/kern/sys_procdesc.c +++ b/sys/kern/sys_procdesc.c @@ -94,6 +94,7 @@ static fo_kqfilter_t procdesc_kqfilter; static fo_stat_t procdesc_stat; static fo_close_t procdesc_close; static fo_fill_kinfo_t procdesc_fill_kinfo; +static fo_cmp_t procdesc_cmp; static struct fileops procdesc_ops = { .fo_read = invfo_rdwr, @@ -108,6 +109,7 @@ static struct fileops procdesc_ops = { .fo_chown = invfo_chown, .fo_sendfile = invfo_sendfile, .fo_fill_kinfo = procdesc_fill_kinfo, + .fo_cmp = procdesc_cmp, .fo_flags = DFLAG_PASSABLE, }; @@ -552,3 +554,15 @@ procdesc_fill_kinfo(struct file *fp, struct kinfo_file *kif, kif->kf_un.kf_proc.kf_pid = pdp->pd_pid; return (0); } + +static int +procdesc_cmp(struct file *fp1, struct file *fp2, struct thread *td) +{ + struct procdesc *pdp1, *pdp2; + + if (fp2->f_type != DTYPE_PROCDESC) + return (3); + pdp1 = fp1->f_data; + pdp2 = fp2->f_data; + return (kcmp_cmp((uintptr_t)pdp1->pd_pid, (uintptr_t)pdp2->pd_pid)); +}