git: c85d3064c454 - main - sysctl: add KERN_PROC_RLIMIT_USAGE
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Fri, 27 Sep 2024 15:03:30 UTC
The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=c85d3064c454bde9f1c0cfbb6f42c0ac9fa229e9 commit c85d3064c454bde9f1c0cfbb6f42c0ac9fa229e9 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2024-09-22 17:01:56 +0000 Commit: Konstantin Belousov <kib@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