jackcartersmith/xilinx-usb-driver
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emulate /proc/modules, too

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This commit is contained in:
michael 2007-02-24 16:20:30 +00:00
parent 723d9aa0ce
commit dbda1264f8
1 changed files with 43 additions and 35 deletions
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78
usb-driver.c
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@ -24,7 +24,7 @@
static int (*ioctl_func) (int, int, void *) = NULL; static int (*ioctl_func) (int, int, void *) = NULL;
static int windrvrfd = 0; static int windrvrfd = 0;
static int modulesfd = 0; FILE *modulesfp;
static int modules_read = 0; static int modules_read = 0;
static struct usb_bus *busses = NULL; static struct usb_bus *busses = NULL;
static struct usb_device *usbdevice; static struct usb_device *usbdevice;
@ -582,6 +582,26 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
return ret; return ret;
} }
int ioctl(int fd, int request, ...)
{
va_list args;
void *argp;
int ret;
if (!ioctl_func)
ioctl_func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl");
va_start (args, 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);
return ret;
}
typedef int (*open_funcptr_t) (const char *, int, mode_t); typedef int (*open_funcptr_t) (const char *, int, mode_t);
@ -637,13 +657,6 @@ int close(int fd) {
windrvrfd = 0; windrvrfd = 0;
} }
if (fd == modulesfd) {
#ifdef DEBUG
fprintf(stderr,"close modulesfd\n");
#endif
modulesfd = 0;
}
return (*func) (fd); return (*func) (fd);
} }
@ -661,7 +674,7 @@ FILE *fopen(const char *path, const char *mode) {
fprintf(stderr,"opening /proc/modules\n"); fprintf(stderr,"opening /proc/modules\n");
#endif #endif
#ifdef NO_WINDRVR #ifdef NO_WINDRVR
modulesfd = fileno(ret); modulesfp = ret;
modules_read = 0; modules_read = 0;
#endif #endif
} }
@ -669,43 +682,38 @@ FILE *fopen(const char *path, const char *mode) {
return ret; return ret;
} }
ssize_t read(int fd, void *buf, size_t count) { char *fgets(char *s, int size, FILE *stream) {
size_t ret; static char* (*func) (char*, int, FILE*) = NULL;
static ssize_t (*func) (int, void*, size_t) = NULL;
const char modules[] = "windrvr6 160960 0 - Live 0xf98b0000\n"; const char modules[] = "windrvr6 160960 0 - Live 0xf98b0000\n";
char *ret = NULL;
if (!func) if (!func)
func = (ssize_t (*) (int, void*, size_t)) dlsym(REAL_LIBC, "read"); func = (char* (*) (char*, int, FILE*)) dlsym(REAL_LIBC, "fgets");
if ((!modules_read) && (fd == modulesfd)) { if (modulesfp == stream) {
strcpy(buf, modules); if (!modules_read) {
ret = strlen(modules); strcpy(s, modules);
modules_read = 1; ret = s;
modules_read = 1;
}
} else { } else {
ret = (*func) (fd, buf, count); ret = (*func)(s,size,stream);
} }
return ret; return ret;
} }
int ioctl(int fd, int request, ...) int fclose(FILE *fp) {
{ static int (*func) (FILE*) = NULL;
va_list args;
void *argp;
int ret;
if (!ioctl_func) if (!func)
ioctl_func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl"); func = (int (*) (FILE*)) dlsym(REAL_LIBC, "fclose");
va_start (args, request); if (fp == modulesfp) {
argp = va_arg (args, void *); modulesfp = NULL;
va_end (args); }
if (fd == windrvrfd) return (*func)(fp);
ret = do_wdioctl(fd, request, argp);
else
ret = (*ioctl_func) (fd, request, argp);
return ret;
} }
#endif #endif