information for newer udev versions

[usb-driver] / usb-driver.c

diff --git a/usb-driver.c b/usb-driver.c
index 0cc74bfb26d40b29fd53754b18cf59350fe49300..264366bac6bcb075a1574b9bc9a41bdfe4c24aa1 100644 (file)
--- a/usb-driver.c
+++ b/usb-driver.c
@@ -39,12 +39,15 @@
 #include <sys/ioctl.h>
 #include <sys/utsname.h>
 #include <bits/wordsize.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
 #include "usb-driver.h"
 #include "config.h"
 #include "xpcu.h"
 
 static int (*ioctl_func) (int, int, void *) = NULL;
-static int windrvrfd = -1;
+static int *windrvrfds = NULL;
+static int windrvrfds_count = 0;
 static unsigned long ppbase = 0;
 static unsigned long ecpbase = 0;
 static struct parport_config *pport = NULL;
@@ -55,13 +58,14 @@ static int modules_read = 0;
 
 #define NO_WINDRVR 1
 
-void hexdump(unsigned char *buf, int len) {
+void hexdump(unsigned char *buf, int len, char *prefix) {
        int i;
 
+       fprintf(stderr, "%s ", prefix);
        for(i=0; i<len; i++) {
                fprintf(stderr,"%02x ", buf[i]);
                if ((i % 16) == 15)
-                       fprintf(stderr,"\n");
+                       fprintf(stderr,"\n%s ", prefix);
        }
        fprintf(stderr,"\n");
 }
@@ -141,13 +145,13 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
                                ut->dwUniqueID, ut->dwPipeNum, ut->fRead,
                                ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
                                if (ut->dwPipeNum == 0) {
-                                       DPRINTF("-> setup packet: ");
-                                       hexdump(ut->SetupPacket, 8);
+                                       DPRINTF("-> setup packet:");
+                                       hexdump(ut->SetupPacket, 8, "");
                                }
 
                                if (!ut->fRead && ut->dwBufferSize)
                                {
-                                       hexdump(ut->pBuffer, ut->dwBufferSize);
+                                       hexdump(ut->pBuffer, ut->dwBufferSize, "->");
                                }
 #endif
 
@@ -161,8 +165,7 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
                                DPRINTF("Transferred: %lu (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
                                if (ut->fRead && ut->dwBytesTransferred)
                                {
-                                       DPRINTF("<- Read: ");
-                                       hexdump(ut->pBuffer, ut->dwBytesTransferred);
+                                       hexdump(ut->pBuffer, ut->dwBytesTransferred, "<-");
                                }
 #endif
                        }
@@ -451,7 +454,7 @@ static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
 int ioctl(int fd, unsigned long int request, ...) {
        va_list args;
        void *argp;
-       int ret;
+       int i;
 
        if (!ioctl_func)                                                                    
                ioctl_func = (int (*) (int, int, void *)) dlsym (RTLD_NEXT, "ioctl");             
@@ -460,12 +463,12 @@ int ioctl(int fd, unsigned long int request, ...) {
        argp = va_arg (args, void *);
        va_end (args);
 
-       if (fd == windrvrfd)
-               ret = do_wdioctl(fd, request, argp);
-       else
-               ret = (*ioctl_func) (fd, request, argp);
+       for (i = 0; i < windrvrfds_count; i++) {
+               if (fd == windrvrfds[i])
+                       return do_wdioctl(fd, request, argp);
+       }
 
-       return ret;
+       return (*ioctl_func) (fd, request, argp);
 }
 
 int open (const char *pathname, int flags, ...) {
@@ -484,11 +487,15 @@ int open (const char *pathname, int flags, ...) {
        }
 
        if (!strcmp (pathname, "/dev/windrvr6")) {
-               DPRINTF("opening windrvr6\n");
+               DPRINTF("opening windrvr6 (%d)\n", windrvrfds_count);
+               windrvrfds = realloc(windrvrfds, sizeof(int) * (++windrvrfds_count));
+               if (!windrvrfds)
+                       return -ENOMEM;
+
 #ifdef NO_WINDRVR
-               windrvrfd = fd = (*func) ("/dev/null", flags, mode);
+               windrvrfds[windrvrfds_count-1] = fd = (*func) ("/dev/null", flags, mode);
 #else
-               windrvrfd = fd = (*func) (pathname, flags, mode);
+               windrvrfds[windrvrfds_count-1] = fd = (*func) (pathname, flags, mode);
 #endif
 
                return fd;
@@ -499,13 +506,22 @@ int open (const char *pathname, int flags, ...) {
 
 int close(int fd) {
        static int (*func) (int) = NULL;
+       int i;
 
        if (!func)
                func = (int (*) (int)) dlsym(RTLD_NEXT, "close");
        
-       if (fd == windrvrfd && windrvrfd >= 0) {
-               DPRINTF("close windrvrfd\n");
-               windrvrfd = -1;
+       for (i = 0; i < windrvrfds_count; i++) {
+               if (fd == windrvrfds[i] && windrvrfds[i] >= 0) {
+                       int remaining = windrvrfds_count - (i + 1);
+                       DPRINTF("close windrvr6 (%d)\n", i);
+                       if (remaining)
+                               memmove(&(windrvrfds[i]), &(windrvrfds[i+1]), remaining * sizeof(int));
+                       windrvrfds = realloc(windrvrfds, sizeof(int) * --windrvrfds_count);
+                       if (!windrvrfds_count)
+                               windrvrfds = NULL;
+                       break;
+               }
        }
 
        return (*func) (fd);
@@ -543,6 +559,12 @@ FILE *fopen(const char *path, const char *mode) {
 
        if (!strcmp(path, "/proc/modules")) {
                DPRINTF("opening /proc/modules\n");
+               if (!ret && errno == ENOENT) {
+                       /* Hmm.. there appears to be no /proc/modules file
+                        * fake it then */
+                       ret = (*func)("/dev/null", mode);
+                       DPRINTF("No /proc/modules -- faking\n");
+               }
 #ifdef NO_WINDRVR
                modulesfp = ret;
                modules_read = 0;
@@ -610,6 +632,29 @@ int access(const char *pathname, int mode) {
        }
 }
 
+#if 0
+/* USB cable sharing needs to overload semop, TODO! */
+int semop (int __semid, struct sembuf *__sops, size_t __nsops) {
+       static int (*func) (int, struct sembuf*, size_t) = NULL;
+       int i;
+
+       if (!func)
+               func = (int (*) (int, struct sembuf*, size_t)) dlsym(RTLD_NEXT, "semop");
+       
+       fprintf(stderr,"semop: semid: 0x%X, elements: %d\n", __semid, __nsops);
+       for (i = 0; i < __nsops; i++) {
+               fprintf(stderr, " num: %u, op: %d, flg: %d\n", __sops[i].sem_num, __sops[i].sem_op, __sops[i].sem_flg);
+               if (__sops[i].sem_op < 0) {
+                       fprintf(stderr, "SEMAPHORE LOCK\n");
+               } else {
+                       fprintf(stderr, "SEMAPHORE UNLOCK\n");
+               }
+       }
+
+       return (*func)(__semid, __sops, __nsops);
+}
+#endif
+
 #if __WORDSIZE == 32
 int uname (struct utsname *__name) {
        static int (*func) (struct utsname*);