Now it works also for stdio access: trick stolen from pthread library

diff --git a/alsa-oss.c b/alsa-oss.c
index 315cced1594d04872818274a3cbf8179d761fbce..0a3bfe70ed25d237959916fd5485e9f1a75b5b69 100644 (file)
--- a/alsa-oss.c
+++ b/alsa-oss.c
@@ -65,11 +65,6 @@ static int debug = 0;
 
 int (*_select)(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
 int (*_poll)(struct pollfd *ufds, unsigned int nfds, int timeout);
-
-/* Note that to do a fool proof job we need also to trap:
-   fopen, fdopen, freopen, fclose, fwrite, fread, etc.
-   I hope that no applications use stdio to access OSS devices */
-
 int (*_open)(const char *file, int oflag, ...);
 int (*_close)(int fd);
 ssize_t (*_write)(int fd, const void *buf, size_t n);
@@ -1774,11 +1769,6 @@ void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
 int munmap(void *addr, size_t len)
 {
        int fd;
-#if 0
-       /* Tricky here: matches snd_pcm_munmap */
-       if (errno == 12345)
-               return _munmap(addr, len);
-#endif
        for (fd = 0; fd < open_max; ++fd) {
                if (fds[fd] && fds[fd]->mmap_area == addr)
                        break;
@@ -2094,7 +2084,20 @@ int select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds,
        return count1;
 }
 
-
+#if 1
+# define strong_alias(name, aliasname) \
+  extern __typeof (name) aliasname __attribute__ ((alias (#name)));
+strong_alias(open, __open);
+strong_alias(close, __close);
+strong_alias(write, __write);
+strong_alias(read, __read);
+strong_alias(ioctl, __ioctl);
+strong_alias(fcntl, __fcntl);
+strong_alias(mmap, __mmap);
+strong_alias(munmap, __munmap);
+strong_alias(poll, __poll);
+strong_alias(select, __select);
+#else
 int dup(int fd)
 {
        return fcntl(fd, F_DUPFD, 0);
@@ -2138,6 +2141,7 @@ int open64(const char *file, int oflag, ...)
        }
        return open(file, oflag | O_LARGEFILE, mode);
 }
+#endif
 
 static void initialize() __attribute__ ((constructor));