WebSVN – HelenOS – Diff – //branches/dynload/uspace/lib/libc/generic/vfs/vfs.c

 futex_t vfs_phone_futex = FUTEX_INITIALIZER;
 futex_t cwd_futex = FUTEX_INITIALIZER;
 DIR *cwd_dir = NULL;
 char *cwd_path = NULL;
-size_t cwd_len = 0;
+size_t cwd_size = 0;
 char *absolutize(const char *path, size_t *retlen)
+{
     char *ncwd_path;
     char *ncwd_path_nc;
     futex_down(&cwd_futex);
-    size_t len = strlen(path);
+    size_t size = str_size(path);
     if (*path != '/') {
         if (!cwd_path) {
             futex_up(&cwd_futex);
             return NULL;
+        }
-        ncwd_path_nc = malloc(cwd_len + 1 + len + 1);
+        ncwd_path_nc = malloc(cwd_size + 1 + size + 1);
         if (!ncwd_path_nc) {
             futex_up(&cwd_futex);
             return NULL;
+        }
-        strcpy(ncwd_path_nc, cwd_path);
+        str_cpy(ncwd_path_nc, cwd_size + 1 + size + 1, cwd_path);
-        ncwd_path_nc[cwd_len] = '/';
+        ncwd_path_nc[cwd_size] = '/';
-        ncwd_path_nc[cwd_len + 1] = '\0';
+        ncwd_path_nc[cwd_size + 1] = '\0';
     } else {
-        ncwd_path_nc = malloc(len + 1);
+        ncwd_path_nc = malloc(size + 1);
         if (!ncwd_path_nc) {
             futex_up(&cwd_futex);
             return NULL;
+        }
         ncwd_path_nc[0] = '\0';
+    }
-    strcat(ncwd_path_nc, path);
+    str_append(ncwd_path_nc, cwd_size + 1 + size + 1, path);
     ncwd_path = canonify(ncwd_path_nc, retlen);
     if (!ncwd_path) {
         futex_up(&cwd_futex);
         free(ncwd_path_nc);
         return NULL;
     /*
      * We need to clone ncwd_path because canonify() works in-place and thus
      * the address in ncwd_path need not be the same as ncwd_path_nc, even
      * though they both point into the same dynamically allocated buffer.
      */
-    ncwd_path = strdup(ncwd_path);
+    ncwd_path = str_dup(ncwd_path);
     free(ncwd_path_nc);
     if (!ncwd_path) {
         futex_up(&cwd_futex);
         return NULL;
+    }
     ipc_call_t answer;
     aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, flags, 0,
         &answer);
-    ipcarg_t retval = ipc_data_write_start(phone, name, strlen(name) + 1);
+    ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
     if (retval != EOK) {
         async_wait_for(req, NULL);
         ipc_hangup(phone);
         return retval;
     ipc_hangup(phone);
     return retval;
+}
 int mount(const char *fs_name, const char *mp, const char *dev,
-    const unsigned int flags)
+    const char *opts, const unsigned int flags)
+{
     int res;
     ipcarg_t rc;
     aid_t req;
     dev_handle_t dev_handle;
     res = device_get_handle(dev, &dev_handle, flags);
     if (res != EOK)
         return res;
-    size_t mpa_len;
+    size_t mpa_size;
-    char *mpa = absolutize(mp, &mpa_len);
+    char *mpa = absolutize(mp, &mpa_size);
     if (!mpa)
         return ENOMEM;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     req = async_send_2(vfs_phone, VFS_MOUNT, dev_handle, flags, NULL);
-    rc = ipc_data_write_start(vfs_phone, (void *) mpa, mpa_len);
+    rc = ipc_data_write_start(vfs_phone, (void *) mpa, mpa_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(mpa);
         return (int) rc;
+    }
+    rc = ipc_data_write_start(vfs_phone, (void *) opts, str_size(opts));
+    if (rc != EOK) {
+        async_wait_for(req, NULL);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        free(mpa);
+        return (int) rc;
+    }
-    rc = ipc_data_write_start(vfs_phone, (void *) fs_name, strlen(fs_name));
+    rc = ipc_data_write_start(vfs_phone, (void *) fs_name, str_size(fs_name));
+    if (rc != EOK) {
+        async_wait_for(req, NULL);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        free(mpa);
+        return (int) rc;
+    }
+    /* Ask VFS whether it likes fs_name. */
+    rc = async_req_0_0(vfs_phone, IPC_M_PING);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(mpa);
+{
     ipcarg_t rc;
     ipc_call_t answer;
     aid_t req;
-    size_t pa_len;
+    size_t pa_size;
-    char *pa = absolutize(path, &pa_len);
+    char *pa = absolutize(path, &pa_size);
     if (!pa)
         return ENOMEM;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
-    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
+    rc = ipc_data_write_start(vfs_phone, pa, pa_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(pa);
 int mkdir(const char *path, mode_t mode)
+{
     ipcarg_t rc;
     aid_t req;
-    size_t pa_len;
+    size_t pa_size;
-    char *pa = absolutize(path, &pa_len);
+    char *pa = absolutize(path, &pa_size);
     if (!pa)
         return ENOMEM;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);
-    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
+    rc = ipc_data_write_start(vfs_phone, pa, pa_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(pa);
 static int _unlink(const char *path, int lflag)
+{
     ipcarg_t rc;
     aid_t req;
-    size_t pa_len;
+    size_t pa_size;
-    char *pa = absolutize(path, &pa_len);
+    char *pa = absolutize(path, &pa_size);
     if (!pa)
         return ENOMEM;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     req = async_send_0(vfs_phone, VFS_UNLINK, NULL);
-    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
+    rc = ipc_data_write_start(vfs_phone, pa, pa_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(pa);
 int rename(const char *old, const char *new)
+{
     ipcarg_t rc;
     aid_t req;
-    size_t olda_len;
+    size_t olda_size;
-    char *olda = absolutize(old, &olda_len);
+    char *olda = absolutize(old, &olda_size);
     if (!olda)
         return ENOMEM;
-    size_t newa_len;
+    size_t newa_size;
-    char *newa = absolutize(new, &newa_len);
+    char *newa = absolutize(new, &newa_size);
     if (!newa) {
         free(olda);
         return ENOMEM;
+    }
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     req = async_send_0(vfs_phone, VFS_RENAME, NULL);
-    rc = ipc_data_write_start(vfs_phone, olda, olda_len);
+    rc = ipc_data_write_start(vfs_phone, olda, olda_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(olda);
         free(newa);
         return (int) rc;
+    }
-    rc = ipc_data_write_start(vfs_phone, newa, newa_len);
+    rc = ipc_data_write_start(vfs_phone, newa, newa_size);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         free(olda);
     return rc;
+}
 int chdir(const char *path)
+{
-    size_t pa_len;
+    size_t pa_size;
-    char *pa = absolutize(path, &pa_len);
+    char *pa = absolutize(path, &pa_size);
     if (!pa)
         return ENOMEM;
     DIR *d = opendir(pa);
     if (!d) {
     if (cwd_dir) {
         closedir(cwd_dir);
         cwd_dir = NULL;
         free(cwd_path);
         cwd_path = NULL;
-        cwd_len = 0;
+        cwd_size = 0;
+    }
     cwd_dir = d;
     cwd_path = pa;
-    cwd_len = pa_len;
+    cwd_size = pa_size;
     futex_up(&cwd_futex);
     return EOK;
+}
 char *getcwd(char *buf, size_t size)
+{
     if (!size)
         return NULL;
     futex_down(&cwd_futex);
-    if (size < cwd_len + 1) {
+    if (size < cwd_size + 1) {
         futex_up(&cwd_futex);
         return NULL;
+    }
-    strcpy(buf, cwd_path);
+    str_cpy(buf, size, cwd_path);
     futex_up(&cwd_futex);
     return buf;
+}
 /** @}

Subversion Repositories HelenOS

(root)//branches/dynload/uspace/lib/libc/generic/vfs/vfs.c – Rev 4345 → 4348