diff options
Diffstat (limited to 'lib/libjail')
| -rw-r--r-- | lib/libjail/jail.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/lib/libjail/jail.c b/lib/libjail/jail.c index af0e40a0dc45..fa39edf1d513 100644 --- a/lib/libjail/jail.c +++ b/lib/libjail/jail.c @@ -855,7 +855,7 @@ jailparam_type(struct jailparam *jp) { char *p, *nname; size_t miblen, desclen; - int isarray; + int i, isarray; struct { int i; char s[MAXPATHLEN]; @@ -977,21 +977,33 @@ jailparam_type(struct jailparam *jp) } break; case CTLTYPE_NODE: - /* A node might be described by an empty-named child. */ + /* + * A node might be described by an empty-named child, + * which would be immediately before or after the node itself. + */ mib[1] = 1; - mib[(miblen / sizeof(int)) + 2] = - mib[(miblen / sizeof(int)) + 1] - 1; miblen += sizeof(int); - desclen = sizeof(desc.s); - if (sysctl(mib, (miblen / sizeof(int)) + 2, desc.s, &desclen, - NULL, 0) < 0) { - snprintf(jail_errmsg, JAIL_ERRMSGLEN, - "sysctl(0.1): %s", strerror(errno)); - return (-1); + for (i = -1; i <= 1; i += 2) { + mib[(miblen / sizeof(int)) + 1] = + mib[(miblen / sizeof(int))] + i; + desclen = sizeof(desc.s); + if (sysctl(mib, (miblen / sizeof(int)) + 2, desc.s, + &desclen, NULL, 0) < 0) { + if (errno == ENOENT) + continue; + snprintf(jail_errmsg, JAIL_ERRMSGLEN, + "sysctl(0.1): %s", strerror(errno)); + return (-1); + } + if (desclen == + sizeof(SJPARAM) + strlen(jp->jp_name) + 2 && + memcmp(SJPARAM ".", desc.s, sizeof(SJPARAM)) == 0 && + memcmp(jp->jp_name, desc.s + sizeof(SJPARAM), + desclen - sizeof(SJPARAM) - 2) == 0 && + desc.s[desclen - 2] == '.') + goto mib_desc; } - if (desc.s[desclen - 2] != '.') - goto unknown_parameter; - goto mib_desc; + goto unknown_parameter; default: snprintf(jail_errmsg, JAIL_ERRMSGLEN, "unknown type for %s", jp->jp_name); |