The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=c85d3064c454bde9f1c0cfbb6f42c0ac9fa229e9
commit c85d3064c454bde9f1c0cfbb6f42c0ac9fa229e9
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2024-09-22 17:01:56 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2024-09-27 15:02:23 +0000
sysctl: add KERN_PROC_RLIMIT_USAGE
Reviewed by: markj, olce
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D46747
---
sys/kern/kern_resource.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
sys/sys/sysctl.h | 1 +
2 files changed, 51 insertions(+)
diff --git a/sys/kern/kern_resource.c b/sys/kern/kern_resource.c
index db5cce833012..c8b01afeab4f 100644
--- a/sys/kern/kern_resource.c
+++ b/sys/kern/kern_resource.c
@@ -1741,3 +1741,53 @@ chgpipecnt(struct uidinfo *uip, int diff, rlim_t max)
return (chglimit(uip, &uip->ui_pipecnt, diff, max, "pipecnt"));
}
+
+static int
+sysctl_kern_proc_rlimit_usage(SYSCTL_HANDLER_ARGS)
+{
+ rlim_t resval[RLIM_NLIMITS];
+ struct proc *p;
+ size_t len;
+ int error, *name, i;
+
+ name = (int *)arg1;
+ if ((u_int)arg2 != 1 && (u_int)arg2 != 2)
+ return (EINVAL);
+ if (req->newptr != NULL)
+ return (EINVAL);
+
+ error = pget((pid_t)name[0], PGET_WANTREAD, &p);
+ if (error != 0)
+ return (error);
+
+ if ((u_int)arg2 == 1) {
+ len = sizeof(resval);
+ memset(resval, 0, sizeof(resval));
+ for (i = 0; i < RLIM_NLIMITS; i++) {
+ error = getrlimitusage_one(p, (unsigned)i, 0,
+ &resval[i]);
+ if (error == ENXIO) {
+ resval[i] = -1;
+ error = 0;
+ } else if (error != 0) {
+ break;
+ }
+ }
+ } else {
+ len = sizeof(resval[0]);
+ error = getrlimitusage_one(p, (unsigned)name[1], 0,
+ &resval[0]);
+ if (error == ENXIO) {
+ resval[0] = -1;
+ error = 0;
+ }
+ }
+ if (error == 0)
+ error = SYSCTL_OUT(req, resval, len);
+ PRELE(p);
+ return (error);
+}
+static SYSCTL_NODE(_kern_proc, KERN_PROC_RLIMIT_USAGE, rlimit_usage,
+ CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_MPSAFE,
+ sysctl_kern_proc_rlimit_usage,
+ "Process limited resources usage info");
diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index 66c6ff1640b7..f7abc27083aa 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -1040,6 +1040,7 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
#define KERN_PROC_NFDS 43 /* number of open file
descriptors */
#define KERN_PROC_SIGFASTBLK 44 /* address of fastsigblk magic
word */
#define KERN_PROC_VM_LAYOUT 45 /* virtual address space layout
info */
+#define KERN_PROC_RLIMIT_USAGE 46 /* array of rlim_t */
/*
* KERN_IPC identifiers
