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libprocstat: add procstat_getrlimitusage()

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(cherry picked from commit 6126f4ea646a3c19647c3efdcf672641cff6954b)
This commit is contained in:
Konstantin Belousov 2024-09-22 20:19:00 +03:00
parent d9aa256201
commit 1611738d4c
3 changed files with 61 additions and 0 deletions
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5
lib/libprocstat/Symbol.map
View file

@ -47,4 +47,9 @@ FBSD_1.6 {
FBSD_1.7 {
procstat_getadvlock;
procstat_freeadvlock;
};
FBSD_1.8 {
procstat_getrlimitusage;
procstat_freerlimitusage;
};

53
lib/libprocstat/libprocstat.c
View file

@ -2785,3 +2785,56 @@ procstat_freeadvlock(struct procstat *procstat __unused,
free(lst);
}
static rlim_t *
procstat_getrlimitusage_sysctl(pid_t pid, unsigned *cntp)
{
int error, name[4];
rlim_t *val;
size_t len;
name[0] = CTL_KERN;
name[1] = KERN_PROC;
name[2] = KERN_PROC_RLIMIT_USAGE;
name[3] = pid;
len = 0;
error = sysctl(name, nitems(name), NULL, &len, NULL, 0);
if (error == -1)
return (NULL);
val = malloc(len);
if (val == NULL)
return (NULL);
error = sysctl(name, nitems(name), val, &len, NULL, 0);
if (error == -1) {
free(val);
return (NULL);
}
*cntp = len / sizeof(rlim_t);
return (val);
}
rlim_t *
procstat_getrlimitusage(struct procstat *procstat, struct kinfo_proc *kp,
unsigned int *cntp)
{
switch (procstat->type) {
case PROCSTAT_KVM:
warnx("kvm method is not supported");
return (NULL);
case PROCSTAT_SYSCTL:
return (procstat_getrlimitusage_sysctl(kp->ki_pid, cntp));
case PROCSTAT_CORE:
warnx("core method is not supported");
return (NULL);
default:
warnx("unknown access method: %d", procstat->type);
return (NULL);
}
}
void
procstat_freerlimitusage(struct procstat *procstat __unused, rlim_t *resusage)
{
free(resusage);
}

3
lib/libprocstat/libprocstat.h
View file

@ -212,6 +212,7 @@ void procstat_freefiles(struct procstat *procstat,
struct filestat_list *head);
void procstat_freeptlwpinfo(struct procstat *procstat,
struct ptrace_lwpinfo *pl);
void procstat_freerlimitusage(struct procstat *procstat, rlim_t *resusage);
void procstat_freevmmap(struct procstat *procstat,
struct kinfo_vmentry *vmmap);
struct advlock_list *procstat_getadvlock(struct procstat *procstat);
@ -251,6 +252,8 @@ int procstat_getpathname(struct procstat *procstat, struct kinfo_proc *kp,
char *pathname, size_t maxlen);
int procstat_getrlimit(struct procstat *procstat, struct kinfo_proc *kp,
int which, struct rlimit* rlimit);
rlim_t *procstat_getrlimitusage(struct procstat *procstat,
struct kinfo_proc *kp, unsigned int *cntp);
int procstat_getumask(struct procstat *procstat, struct kinfo_proc *kp,
unsigned short* umask);
struct kinfo_vmentry *procstat_getvmmap(struct procstat *procstat,