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kinfo_vmentry: report cdev name for device mappings

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(cherry picked from commit ac9b565b1aa1adc359a5b0a0d83d0aea63643d62)
This commit is contained in:
Konstantin Belousov 2024-10-10 12:31:37 +03:00
parent 1e2317b3bf
commit cdc72c4960
1 changed files with 17 additions and 1 deletions
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18
sys/kern/kern_proc.c
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@ -40,6 +40,7 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bitstring.h>
#include <sys/conf.h>
#include <sys/elf.h>
#include <sys/eventhandler.h>
#include <sys/exec.h>
@ -2615,9 +2616,11 @@ kern_proc_vmmap_out(struct proc *p, struct sbuf *sb, ssize_t maxlen, int flags)
struct ucred *cred;
struct vnode *vp;
struct vmspace *vm;
struct cdev *cdev;
struct cdevsw *csw;
vm_offset_t addr;
unsigned int last_timestamp;
int error;
int error, ref;
key_t key;
unsigned short seq;
bool guard, super;
@ -2715,6 +2718,19 @@ kern_proc_vmmap_out(struct proc *p, struct sbuf *sb, ssize_t maxlen, int flags)
kve->kve_ref_count = obj->ref_count;
kve->kve_shadow_count = obj->shadow_count;
if (obj->type == OBJT_DEVICE ||
obj->type == OBJT_MGTDEVICE) {
cdev = obj->un_pager.devp.dev;
if (cdev != NULL) {
csw = dev_refthread(cdev, &ref);
if (csw != NULL) {
strlcpy(kve->kve_path,
cdev->si_name, sizeof(
kve->kve_path));
dev_relthread(cdev, ref);
}
}
}
VM_OBJECT_RUNLOCK(obj);
if ((lobj->flags & OBJ_SYSVSHM) != 0) {
kve->kve_flags |= KVME_FLAG_SYSVSHM;