char *
osdep_get_name(int fd, __unused char *tty)
{
int mib[6];
struct stat sb;
size_t len, i;
struct kinfo_proc2 *buf, *newbuf, *bestp;
char *name;
if (stat(tty, &sb) == -1)
return (NULL);
if ((mib[3] = tcgetpgrp(fd)) == -1)
return (NULL);
buf = NULL;
len = sizeof bestp;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC2;
mib[2] = KERN_PROC_PGRP;
mib[4] = sizeof *buf;
retry:
mib[5] = 0;
if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
return (NULL);
if ((newbuf = realloc(buf, len)) == NULL)
goto error;
buf = newbuf;
mib[5] = len / (sizeof *buf);
if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
goto retry;
goto error;
}
bestp = NULL;
for (i = 0; i < len / (sizeof *buf); i++) {
if (buf[i].p_tdev != sb.st_rdev)
continue;
if (bestp == NULL)
bestp = &buf[i];
else
bestp = cmp_procs(&buf[i], bestp);
}
name = NULL;
if (bestp != NULL)
name = strdup(bestp->p_comm);
free(buf);
return (name);
error:
free(buf);
return (NULL);
}
char *
osdep_get_name(int fd, char *tty)
{
int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0,
sizeof(struct kinfo_proc), 0 };
struct stat sb;
size_t len;
struct kinfo_proc *buf, *newbuf, *bestp;
u_int i;
char *name;
buf = NULL;
if (stat(tty, &sb) == -1)
return (NULL);
if ((mib[3] = tcgetpgrp(fd)) == -1)
return (NULL);
retry:
if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1)
return (NULL);
len = (len * 5) / 4;
if ((newbuf = realloc(buf, len)) == NULL)
goto error;
buf = newbuf;
mib[5] = (int)(len / sizeof(struct kinfo_proc));
if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
goto retry;
goto error;
}
bestp = NULL;
for (i = 0; i < len / sizeof (struct kinfo_proc); i++) {
if ((dev_t)buf[i].p_tdev != sb.st_rdev)
continue;
if (bestp == NULL)
bestp = &buf[i];
else
bestp = cmp_procs(&buf[i], bestp);
}
name = NULL;
if (bestp != NULL)
name = strdup(bestp->p_comm);
free(buf);
return (name);
error:
free(buf);
return (NULL);
}
