]> granicus.if.org Git - strace/blobdiff - sock.c
tests: check decoding of accept4 syscall
[strace] / sock.c
diff --git a/sock.c b/sock.c
index 787bf9291da8704ad0662b70ad60d691bd6f2843..cf13896bd0d3ea0858a2b19827bfb872ea2b8a3e 100644 (file)
--- a/sock.c
+++ b/sock.c
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *     $Id$
  */
 
 #include "defs.h"
-
-#ifdef LINUX
-#include <sys/socket.h>
-#include <linux/sockios.h>
-#else
 #include <sys/socket.h>
-#include <sys/sockio.h>
+#if defined ALPHA || defined SH || defined SH64
+# include <linux/ioctl.h>
 #endif
+#include <linux/sockios.h>
 #include <arpa/inet.h>
-
-#if defined (ALPHA) || defined(SH) || defined(SH64)
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#elif defined(HAVE_IOCTLS_H)
-#include <ioctls.h>
-#endif
-#endif
 #include <net/if.h>
 
-extern const struct xlat addrfams[];
-
-static const struct xlat iffflags[] = {
-       { IFF_UP,               "IFF_UP"                },
-       { IFF_BROADCAST,        "IFF_BROADCAST"         },
-       { IFF_DEBUG,            "IFF_DEBUG"             },
-       { IFF_LOOPBACK,         "IFF_LOOPBACK"          },
-       { IFF_POINTOPOINT,      "IFF_POINTOPOINT"       },
-       { IFF_NOTRAILERS,       "IFF_NOTRAILERS"        },
-       { IFF_RUNNING,          "IFF_RUNNING"           },
-       { IFF_NOARP,            "IFF_NOARP"             },
-       { IFF_PROMISC,          "IFF_PROMISC"           },
-       { IFF_ALLMULTI,         "IFF_ALLMULTI"          },
-       { IFF_MASTER,           "IFF_MASTER"            },
-       { IFF_SLAVE,            "IFF_SLAVE"             },
-       { IFF_MULTICAST,        "IFF_MULTICAST"         },
-       { IFF_PORTSEL,          "IFF_PORTSEL"           },
-       { IFF_AUTOMEDIA,        "IFF_AUTOMEDIA"         },
-       { 0,                    NULL                    }
-};
+#include "xlat/iffflags.h"
 
+#define PRINT_IFREQ_ADDR(tcp, ifr, sockaddr)                                   \
+       do {                                                                    \
+               tprints(#sockaddr "=");                                         \
+               print_sockaddr(tcp, &((ifr)->sockaddr),                         \
+                              sizeof((ifr)->sockaddr));                        \
+       } while (0)
 
 static void
-print_addr(tcp, addr, ifr)
-struct tcb *tcp;
-long addr;
-struct ifreq *ifr;
+print_ifname(const char *ifname)
 {
-       if (ifr->ifr_addr.sa_family == AF_INET) {
-               struct sockaddr_in *sinp;
-               sinp = (struct sockaddr_in *) &ifr->ifr_addr;
-               tprintf("inet_addr(\"%s\")", inet_ntoa(sinp->sin_addr));
-       } else
-               printstr(tcp, addr, sizeof(ifr->ifr_addr.sa_data));
+       print_quoted_string(ifname, IFNAMSIZ + 1, QUOTE_0_TERMINATED);
 }
 
-int
-sock_ioctl(tcp, code, arg)
-struct tcb *tcp;
-long code, arg;
+static void
+print_ifreq(struct tcb *tcp, const unsigned int code, const long arg,
+           const struct ifreq *ifr)
+{
+       switch (code) {
+       case SIOCSIFADDR:
+       case SIOCGIFADDR:
+               PRINT_IFREQ_ADDR(tcp, ifr, ifr_addr);
+               break;
+       case SIOCSIFDSTADDR:
+       case SIOCGIFDSTADDR:
+               PRINT_IFREQ_ADDR(tcp, ifr, ifr_dstaddr);
+               break;
+       case SIOCSIFBRDADDR:
+       case SIOCGIFBRDADDR:
+               PRINT_IFREQ_ADDR(tcp, ifr, ifr_broadaddr);
+               break;
+       case SIOCSIFNETMASK:
+       case SIOCGIFNETMASK:
+               PRINT_IFREQ_ADDR(tcp, ifr, ifr_netmask);
+               break;
+       case SIOCSIFHWADDR:
+       case SIOCGIFHWADDR: {
+               /* XXX Are there other hardware addresses
+                  than 6-byte MACs?  */
+               const unsigned char *bytes =
+                       (unsigned char *) &ifr->ifr_hwaddr.sa_data;
+               tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
+                       bytes[0], bytes[1], bytes[2],
+                       bytes[3], bytes[4], bytes[5]);
+               break;
+       }
+       case SIOCSIFFLAGS:
+       case SIOCGIFFLAGS:
+               tprints("ifr_flags=");
+               printflags(iffflags, (unsigned short) ifr->ifr_flags, "IFF_???");
+               break;
+       case SIOCSIFMETRIC:
+       case SIOCGIFMETRIC:
+               tprintf("ifr_metric=%d", ifr->ifr_metric);
+               break;
+       case SIOCSIFMTU:
+       case SIOCGIFMTU:
+               tprintf("ifr_mtu=%d", ifr->ifr_mtu);
+               break;
+       case SIOCSIFSLAVE:
+       case SIOCGIFSLAVE:
+               tprints("ifr_slave=");
+               print_ifname(ifr->ifr_slave);
+               break;
+       case SIOCSIFTXQLEN:
+       case SIOCGIFTXQLEN:
+               tprintf("ifr_qlen=%d", ifr->ifr_qlen);
+               break;
+       case SIOCSIFMAP:
+       case SIOCGIFMAP:
+               tprintf("ifr_map={mem_start=%#lx, "
+                       "mem_end=%#lx, base_addr=%#x, "
+                       "irq=%u, dma=%u, port=%u}",
+                       ifr->ifr_map.mem_start,
+                       ifr->ifr_map.mem_end,
+                       (unsigned) ifr->ifr_map.base_addr,
+                       (unsigned) ifr->ifr_map.irq,
+                       (unsigned) ifr->ifr_map.dma,
+                       (unsigned) ifr->ifr_map.port);
+               break;
+       }
+}
+
+static unsigned int
+print_ifc_len(int len)
+{
+       const unsigned int n = (unsigned int) len / sizeof(struct ifreq);
+
+       if (len < 0 || n * sizeof(struct ifreq) != (unsigned int) len)
+               tprintf("%d", len);
+       else
+               tprintf("%u * sizeof(struct ifreq)", n);
+
+       return n;
+}
+
+static int
+decode_ifconf(struct tcb *tcp, const long addr)
 {
-       struct ifreq ifr;
        struct ifconf ifc;
-       const char *str = NULL;
-       unsigned char *bytes;
 
        if (entering(tcp)) {
-               if (code == SIOCGIFCONF) {
-                       umove(tcp, tcp->u_arg[2], &ifc);
-                       if (ifc.ifc_buf == NULL)
-                               tprintf(", {%d -> ", ifc.ifc_len);
-                       else
-                               tprintf(", {");
+               tprints(", ");
+               if (umove_or_printaddr(tcp, addr, &ifc))
+                       return RVAL_DECODED | 1;
+               if (ifc.ifc_buf) {
+                       tprints("{");
+                       print_ifc_len(ifc.ifc_len);
                }
-               return 0;
+               return 1;
+       }
+
+       if (syserror(tcp) || umove(tcp, addr, &ifc) < 0) {
+               if (ifc.ifc_buf)
+                       tprints("}");
+               else
+                       printaddr(addr);
+               return RVAL_DECODED | 1;
        }
 
+       if (!ifc.ifc_buf) {
+               tprints("{");
+               print_ifc_len(ifc.ifc_len);
+               tprints(", NULL}");
+               return RVAL_DECODED | 1;
+       }
+
+       tprints(" => ");
+       const unsigned int nifra = print_ifc_len(ifc.ifc_len);
+       if (!nifra) {
+               tprints("}");
+               return RVAL_DECODED | 1;
+       }
+
+       struct ifreq ifra[nifra > max_strlen ? max_strlen : nifra];
+       tprints(", ");
+       if (umove_or_printaddr(tcp, (unsigned long) ifc.ifc_buf, &ifra)) {
+               tprints("}");
+               return RVAL_DECODED | 1;
+       }
+
+       tprints("[");
+       unsigned int i;
+       for (i = 0; i < ARRAY_SIZE(ifra); ++i) {
+               if (i > 0)
+                       tprints(", ");
+               tprints("{ifr_name=");
+               print_ifname(ifra[i].ifr_name);
+               tprints(", ");
+               PRINT_IFREQ_ADDR(tcp, &ifra[i], ifr_addr);
+               tprints("}");
+       }
+       if (i < nifra)
+               tprints(", ...");
+       tprints("]}");
+
+       return RVAL_DECODED | 1;
+}
+
+int
+sock_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
+{
+       struct ifreq ifr;
+
        switch (code) {
-#ifdef SIOCSHIWAT
-       case SIOCSHIWAT:
-#endif
-#ifdef SIOCGHIWAT
-       case SIOCGHIWAT:
-#endif
-#ifdef SIOCSLOWAT
-       case SIOCSLOWAT:
-#endif
-#ifdef SIOCGLOWAT
-       case SIOCGLOWAT:
+       case SIOCGIFCONF:
+               return decode_ifconf(tcp, arg);
+
+#ifdef SIOCBRADDBR
+       case SIOCBRADDBR:
+       case SIOCBRDELBR:
+               tprints(", ");
+               printstr(tcp, arg, -1);
+               break;
 #endif
+
 #ifdef FIOSETOWN
        case FIOSETOWN:
 #endif
-#ifdef FIOGETOWN
-       case FIOGETOWN:
-#endif
 #ifdef SIOCSPGRP
        case SIOCSPGRP:
+#endif
+               tprints(", ");
+               printnum_int(tcp, arg, "%d");
+               break;
+
+#ifdef FIOGETOWN
+       case FIOGETOWN:
 #endif
 #ifdef SIOCGPGRP
        case SIOCGPGRP:
@@ -132,9 +230,49 @@ long code, arg;
 #ifdef SIOCATMARK
        case SIOCATMARK:
 #endif
-               printnum(tcp, arg, ", %#d");
-               return 1;
-#ifdef LINUX
+               if (entering(tcp))
+                       return 0;
+               tprints(", ");
+               printnum_int(tcp, arg, "%d");
+               break;
+
+#ifdef SIOCBRADDIF
+       case SIOCBRADDIF:
+#endif
+#ifdef SIOCBRDELIF
+       case SIOCBRDELIF:
+#endif
+               /* no arguments */
+               break;
+
+       case SIOCSIFNAME:
+       case SIOCSIFADDR:
+       case SIOCSIFDSTADDR:
+       case SIOCSIFBRDADDR:
+       case SIOCSIFNETMASK:
+       case SIOCSIFFLAGS:
+       case SIOCSIFMETRIC:
+       case SIOCSIFMTU:
+       case SIOCSIFSLAVE:
+       case SIOCSIFHWADDR:
+       case SIOCSIFTXQLEN:
+       case SIOCSIFMAP:
+               tprints(", ");
+               if (umove_or_printaddr(tcp, arg, &ifr))
+                       break;
+
+               tprints("{ifr_name=");
+               print_ifname(ifr.ifr_name);
+               tprints(", ");
+               if (code == SIOCSIFNAME) {
+                       tprints("ifr_newname=");
+                       print_ifname(ifr.ifr_newname);
+               } else {
+                       print_ifreq(tcp, code, arg, &ifr);
+               }
+               tprints("}");
+               break;
+
        case SIOCGIFNAME:
        case SIOCGIFINDEX:
        case SIOCGIFADDR:
@@ -146,108 +284,45 @@ long code, arg;
        case SIOCGIFMTU:
        case SIOCGIFSLAVE:
        case SIOCGIFHWADDR:
-               umove(tcp, tcp->u_arg[2], &ifr);
-                if (syserror(tcp)) {
-                       if (code == SIOCGIFNAME)
-                               tprintf(", {ifr_index=%d, ifr_name=???}", ifr.ifr_ifindex);
-                       else
-                               tprintf(", {ifr_name=\"%s\", ???}", ifr.ifr_name);
-               } else if (code == SIOCGIFNAME)
-                       tprintf(", {ifr_index=%d, ifr_name=\"%s\"}",
-                               ifr.ifr_ifindex, ifr.ifr_name);
-               else {
-                       tprintf(", {ifr_name=\"%s\", ", ifr.ifr_name);
-                       switch (code) {
-                       case SIOCGIFINDEX:
-                               tprintf("ifr_index=%d", ifr.ifr_ifindex);
-                               break;
-                       case SIOCGIFADDR:
-                               str = "ifr_addr";
-                       case SIOCGIFDSTADDR:
-                               if (str == NULL)
-                                       str = "ifr_dstaddr";
-                       case SIOCGIFBRDADDR:
-                               if (str == NULL)
-                                       str = "ifr_broadaddr";
-                       case SIOCGIFNETMASK:
-                               if (str == NULL)
-                                       str = "ifr_netmask";
-                               tprintf("%s={", str);
-                               printxval(addrfams,
-                                         ifr.ifr_addr.sa_family,
-                                         "AF_???");
-                               tprintf(", ");
-                               print_addr(tcp, ((long) tcp->u_arg[2]
-                                                + offsetof (struct ifreq,
-                                                            ifr_addr.sa_data)),
-                                          &ifr);
-                               tprintf("}");
-                               break;
-                       case SIOCGIFHWADDR:
-                               /* XXX Are there other hardware addresses
-                                  than 6-byte MACs?  */
-                               bytes = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
-                               tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
-                                       bytes[0], bytes[1], bytes[2],
-                                       bytes[3], bytes[4], bytes[5]);
-                               break;
-                       case SIOCGIFFLAGS:
-                               tprintf("ifr_flags=");
-                               printflags(iffflags, ifr.ifr_flags);
+       case SIOCGIFTXQLEN:
+       case SIOCGIFMAP:
+               if (entering(tcp)) {
+                       tprints(", ");
+                       if (umove_or_printaddr(tcp, arg, &ifr))
                                break;
-                       case SIOCGIFMETRIC:
-                               tprintf("ifr_metric=%d", ifr.ifr_metric);
-                               break;
-                       case SIOCGIFMTU:
-                               tprintf("ifr_mtu=%d", ifr.ifr_mtu);
+
+                       if (SIOCGIFNAME == code) {
+                               tprintf("{ifr_index=%d", ifr.ifr_ifindex);
+                       } else {
+                               tprints("{ifr_name=");
+                               print_ifname(ifr.ifr_name);
+                       }
+                       return 1;
+               } else {
+                       if (syserror(tcp)) {
+                               tprints("}");
                                break;
-                       case SIOCGIFSLAVE:
-                               tprintf("ifr_slave=\"%s\"", ifr.ifr_slave);
+                       }
+
+                       tprints(", ");
+                       if (umove(tcp, arg, &ifr) < 0) {
+                               tprints("???}");
                                break;
                        }
-                       tprintf("}");
-               }
-               return 1;
-       case SIOCGIFCONF:
-               umove(tcp, tcp->u_arg[2], &ifc);
-               tprintf("%d, ", ifc.ifc_len);
-                if (syserror(tcp)) {
-                       tprintf("%lx", (unsigned long) ifc.ifc_buf);
-               } else if (ifc.ifc_buf == NULL) {
-                       tprintf("NULL");
-               } else {
-                       int i;
-                       unsigned nifra = ifc.ifc_len / sizeof(struct ifreq);
-                       struct ifreq ifra[nifra];
-                       umoven(tcp, (unsigned long) ifc.ifc_buf, sizeof(ifra),
-                              (char *) ifra);
-                       tprintf("{");
-                       for (i = 0; i < nifra; ++i ) {
-                               if (i > 0)
-                                       tprintf(", ");
-                               tprintf("{\"%s\", {",
-                                       ifra[i].ifr_name);
-                               if (verbose(tcp)) {
-                                       printxval(addrfams,
-                                                 ifra[i].ifr_addr.sa_family,
-                                                 "AF_???");
-                                       tprintf(", ");
-                                       print_addr(tcp, ((long) tcp->u_arg[2]
-                                                        + offsetof (struct ifreq,
-                                                                    ifr_addr.sa_data)
-                                                        + ((char *) &ifra[i]
-                                                           - (char *) &ifra[0])),
-                                                  &ifra[i]);
-                               } else
-                                       tprintf("...");
-                               tprintf("}}");
+
+                       if (SIOCGIFNAME == code) {
+                               tprints("ifr_name=");
+                               print_ifname(ifr.ifr_name);
+                       } else {
+                               print_ifreq(tcp, code, arg, &ifr);
                        }
-                       tprintf("}");
+                       tprints("}");
+                       break;
                }
-               tprintf("}");
-               return 1;
-#endif
+
        default:
-               return 0;
+               return RVAL_DECODED;
        }
+
+       return RVAL_DECODED | 1;
 }