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Revert the changes to struct kinfo_proc in r194498. Instead, fill

Browse source 
in up to 16 (KI_NGROUPS) values and steal a bit from ki_cr_flags
(all bits currently unused) to indicate overflow with the new flag
KI_CRF_GRP_OVERFLOW.

This fixes procstat -s.

Approved by: re (kib)
This commit is contained in:
Brooks Davis 2009-07-24 15:03:10 +00:00
parent 013818111a
commit 1b5768be71
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=195843
3 changed files with 26 additions and 8 deletions
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10
lib/libkvm/kvm_proc.c
View file

@ -145,8 +145,14 @@ kvm_proclist(kd, what, arg, p, bp, maxcnt)
kp->ki_svuid = ucred.cr_svuid;
kp->ki_rgid = ucred.cr_rgid;
kp->ki_svgid = ucred.cr_svgid;
kp->ki_ngroups = ucred.cr_ngroups;
kp->ki_groups = ucred.cr_groups;
kp->ki_cr_flags = ucred.cr_flags;
if (ucred.cr_ngroups > KI_NGROUPS) {
kp->ki_ngroups = KI_NGROUPS;
kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
}
kp->ki_ngroups = ucred.cr_ngroups;
bcopy(ucred.cr_groups, kp->ki_groups,
kp->ki_ngroups * sizeof(gid_t));
kp->ki_uid = ucred.cr_uid;
if (ucred.cr_prison != NULL) {
if (KREAD(kd, (u_long)ucred.cr_prison, &pr)) {

12
sys/kern/kern_proc.c
View file

@ -730,11 +730,17 @@ fill_kinfo_proc_only(struct proc *p, struct kinfo_proc *kp)
kp->ki_uid = cred->cr_uid;
kp->ki_ruid = cred->cr_ruid;
kp->ki_svuid = cred->cr_svuid;
kp->ki_ngroups = cred->cr_ngroups;
kp->ki_groups = cred->cr_groups;
kp->ki_cr_flags = cred->cr_flags;
/* XXX bde doesn't like KI_NGROUPS */
if (cred->cr_ngroups > KI_NGROUPS) {
kp->ki_ngroups = KI_NGROUPS;
kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW;
} else
kp->ki_ngroups = cred->cr_ngroups;
bcopy(cred->cr_groups, kp->ki_groups,
kp->ki_ngroups * sizeof(gid_t));
kp->ki_rgid = cred->cr_rgid;
kp->ki_svgid = cred->cr_svgid;
kp->ki_cr_flags = cred->cr_flags;
/* If jailed(cred), emulate the old P_JAILED flag. */
if (jailed(cred)) {
kp->ki_flag |= P_JAILED;

12
sys/sys/user.h
View file

@ -85,7 +85,7 @@
*/
#define KI_NSPARE_INT 9
#define KI_NSPARE_LONG 12
#define KI_NSPARE_PTR 6
#define KI_NSPARE_PTR 7
#ifdef __amd64__
#define KINFO_PROC_SIZE 1088
@ -117,8 +117,15 @@
#define OCOMMLEN 16 /* size of returned thread name */
#define COMMLEN 19 /* size of returned ki_comm name */
#define KI_EMULNAMELEN 16 /* size of returned ki_emul */
#define KI_NGROUPS 16 /* number of groups in ki_groups */
#define LOGNAMELEN 17 /* size of returned ki_login */
/*
* Steal a bit from ki_cr_flags (cr_flags is never used) to indicate
* that the cred had more than KI_NGROUPS groups.
*/
#define KI_CRF_GRP_OVERFLOW 0x80000000
struct kinfo_proc {
int ki_structsize; /* size of this structure */
int ki_layout; /* reserved: layout identifier */
@ -150,7 +157,7 @@ struct kinfo_proc {
gid_t ki_svgid; /* Saved effective group id */
short ki_ngroups; /* number of groups */
short ki_spare_short2; /* unused (just here for alignment) */
uint32_t __was_ki_groups[16]; /* unused; left for bin compat */
gid_t ki_groups[KI_NGROUPS]; /* groups */
vm_size_t ki_size; /* virtual size */
segsz_t ki_rssize; /* current resident set size in pages */
segsz_t ki_swrss; /* resident set size before last swap */
@ -200,7 +207,6 @@ struct kinfo_proc {
struct pcb *ki_pcb; /* kernel virtual addr of pcb */
void *ki_kstack; /* kernel virtual addr of stack */
void *ki_udata; /* User convenience pointer */
gid_t *ki_groups; /* groups */
/*
* When adding new variables, take space for pointers from the
* front of ki_spareptrs, and longs from the end of ki_sparelongs.