1 files changed, 122 insertions, 0 deletions

diff --git a/openbsd-compat/port-aix.c b/openbsd-compat/port-aix.c
new file mode 100644
index 000000000..245c8a509
--- /dev/null
+++ b/openbsd-compat/port-aix.c
@@ -0,0 +1,122 @@
+#include "includes.h"
+
+#ifdef _AIX
+
+#include <uinfo.h>
+
+/* AIX limits */
+#if defined(HAVE_GETUSERATTR) && !defined(S_UFSIZE_HARD) && defined(S_UFSIZE)
+# define S_UFSIZE_HARD  S_UFSIZE "_hard"
+# define S_UCPU_HARD  S_UCPU "_hard"
+# define S_UDATA_HARD  S_UDATA "_hard"
+# define S_USTACK_HARD  S_USTACK "_hard"
+# define S_URSS_HARD  S_URSS "_hard"
+# define S_UCORE_HARD  S_UCORE "_hard"
+# define S_UNOFILE_HARD S_UNOFILE "_hard"
+#endif
+
+#if defined(HAVE_GETUSERATTR)
+/*
+ * AIX-specific login initialisation
+ */
+void 
+set_limit(char *user, char *soft, char *hard, int resource, int mult)
+{
+        struct rlimit rlim;
+        int slim, hlim;
+
+        getrlimit(resource, &rlim);
+
+        slim = 0;
+        if (getuserattr(user, soft, &slim, SEC_INT) != -1) {
+                if (slim < 0) {
+                        rlim.rlim_cur = RLIM_INFINITY;
+                } else if (slim != 0) {
+                        /* See the wackiness below */
+                        if (rlim.rlim_cur == slim * mult)
+                                slim = 0;
+                        else
+                                rlim.rlim_cur = slim * mult;
+                }
+        }
+        hlim = 0;
+        if (getuserattr(user, hard, &hlim, SEC_INT) != -1) {
+                if (hlim < 0) {
+                        rlim.rlim_max = RLIM_INFINITY;
+                } else if (hlim != 0) {
+                        rlim.rlim_max = hlim * mult;
+                }
+        }
+
+        /*
+         * XXX For cpu and fsize the soft limit is set to the hard limit
+         * if the hard limit is left at its default value and the soft limit
+         * is changed from its default value, either by requesting it
+         * (slim == 0) or by setting it to the current default.  At least
+         * that's how rlogind does it.  If you're confused you're not alone.
+         * Bug or feature? AIX 4.3.1.2
+         */
+        if ((!strcmp(soft, "fsize") || !strcmp(soft, "cpu"))
+            && hlim == 0 && slim != 0)
+                rlim.rlim_max = rlim.rlim_cur;
+        /* A specified hard limit limits the soft limit */
+        else if (hlim > 0 && rlim.rlim_cur > rlim.rlim_max)
+                rlim.rlim_cur = rlim.rlim_max;
+        /* A soft limit can increase a hard limit */
+        else if (rlim.rlim_cur > rlim.rlim_max)
+                rlim.rlim_max = rlim.rlim_cur;
+
+        if (setrlimit(resource, &rlim) != 0)
+                error("setrlimit(%.10s) failed: %.100s", soft, strerror(errno));
+}
+
+void 
+set_limits_from_userattr(char *user)
+{
+        int mask;
+        char buf[16];
+
+        set_limit(user, S_UFSIZE, S_UFSIZE_HARD, RLIMIT_FSIZE, 512);
+        set_limit(user, S_UCPU, S_UCPU_HARD, RLIMIT_CPU, 1);
+        set_limit(user, S_UDATA, S_UDATA_HARD, RLIMIT_DATA, 512);
+        set_limit(user, S_USTACK, S_USTACK_HARD, RLIMIT_STACK, 512);
+        set_limit(user, S_URSS, S_URSS_HARD, RLIMIT_RSS, 512);
+        set_limit(user, S_UCORE, S_UCORE_HARD, RLIMIT_CORE, 512);
+#if defined(S_UNOFILE)
+        set_limit(user, S_UNOFILE, S_UNOFILE_HARD, RLIMIT_NOFILE, 1);
+#endif
+
+        if (getuserattr(user, S_UMASK, &mask, SEC_INT) != -1) {
+                /* Convert decimal to octal */
+                (void) snprintf(buf, sizeof(buf), "%d", mask);
+                if (sscanf(buf, "%o", &mask) == 1)
+                        umask(mask);
+        }
+}
+#endif /* defined(HAVE_GETUSERATTR) */
+
+/*
+ * AIX has a "usrinfo" area where logname and
+ * other stuff is stored - a few applications
+ * actually use this and die if it's not set
+ */
+void
+aix_usrinfo(Session *s) 
+{
+        struct passwd *pw = s->pw;
+        u_int i;
+        const char *cp=NULL;
+
+        if (s->ttyfd == -1)
+                s->tty[0] = '\0';
+        cp = xmalloc(22 + strlen(s->tty) + 2 * strlen(pw->pw_name));
+        i = sprintf(cp, "LOGNAME=%s%cNAME=%s%cTTY=%s%c%c", pw->pw_name, 0, 
+            pw->pw_name, 0, s->tty, 0, 0);
+        if (usrinfo(SETUINFO, cp, i) == -1)
+                fatal("Couldn't set usrinfo: %s", strerror(errno));
+        debug3("AIX/UsrInfo: set len %d", i);
+        xfree(cp);
+}
+
+#endif /* _AIX */
+