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

 #include <vfs/canonify.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <dirent.h>
 #include <fcntl.h>
-#include <sys/stat.h>
 #include <stdio.h>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <ipc/ipc.h>
 #include <ipc/services.h>
 #include <async.h>
 #include <atomic.h>
 #include <futex.h>
 #include <errno.h>
 #include <string.h>
+#include <devmap.h>
+#include <ipc/vfs.h>
 #include <ipc/devmap.h>
-#include "../../../srv/vfs/vfs.h"
-int vfs_phone = -1;
+static int vfs_phone = -1;
-futex_t vfs_phone_futex = FUTEX_INITIALIZER;
+static futex_t vfs_phone_futex = FUTEX_INITIALIZER;
+static futex_t cwd_futex = FUTEX_INITIALIZER;
-futex_t cwd_futex = FUTEX_INITIALIZER;
 DIR *cwd_dir = NULL;
 char *cwd_path = NULL;
 size_t cwd_size = 0;
 char *absolutize(const char *path, size_t *retlen)
+{
     while (vfs_phone < 0)
         vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0);
+}
-static int device_get_handle(const char *name, dev_handle_t *handle,
-    const unsigned int flags)
-{
-    int phone;
-    if (flags & IPC_FLAG_BLOCKING)
-        phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
-    else
-        phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
-    if (phone < 0)
-        return phone;
-    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, str_size(name) + 1);
-    if (retval != EOK) {
-        async_wait_for(req, NULL);
-        ipc_hangup(phone);
-        return retval;
-    }
-    async_wait_for(req, &retval);
-    if (handle != NULL)
-        *handle = -1;
-    if (retval == EOK) {
-        if (handle != NULL)
-            *handle = (dev_handle_t) IPC_GET_ARG1(answer);
-    }
-    ipc_hangup(phone);
-    return retval;
-}
 int mount(const char *fs_name, const char *mp, const char *dev,
-    const char *opts, const unsigned int flags)
+    const char *opts, unsigned int flags)
+{
     int res;
     ipcarg_t rc;
     aid_t req;
     dev_handle_t dev_handle;
-    res = device_get_handle(dev, &dev_handle, flags);
+    res = devmap_device_get_handle(dev, &dev_handle, flags);
     if (res != EOK)
         return res;
     size_t mpa_size;
     char *mpa = absolutize(mp, &mpa_size);
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_2(vfs_phone, VFS_MOUNT, dev_handle, flags, NULL);
+    req = async_send_2(vfs_phone, VFS_IN_MOUNT, dev_handle, flags, NULL);
     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);
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
+    req = async_send_3(vfs_phone, VFS_IN_OPEN, lflag, oflag, 0, &answer);
     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);
+    }
     async_wait_for(req, &rc);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     free(pa);
     if (rc != EOK)
         return (int) rc;
     return (int) IPC_GET_ARG1(answer);
+}
 int open(const char *path, int oflag, ...)
+{
     return _open(path, L_FILE, oflag);
+}
+int open_node(fdi_node_t *node, int oflag)
+{
+    futex_down(&vfs_phone_futex);
+    async_serialize_start();
+    vfs_connect();
+    ipc_call_t answer;
+    aid_t req = async_send_4(vfs_phone, VFS_IN_OPEN_NODE, node->fs_handle,
+        node->dev_handle, node->index, oflag, &answer);
+    ipcarg_t rc;
+    async_wait_for(req, &rc);
+    async_serialize_end();
+    futex_up(&vfs_phone_futex);
+    if (rc != EOK)
+        return (int) rc;
+    return (int) IPC_GET_ARG1(answer);
+}
 int close(int fildes)
+{
     ipcarg_t rc;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);
+    rc = async_req_1_0(vfs_phone, VFS_IN_CLOSE, fildes);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     return (int)rc;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
+    req = async_send_1(vfs_phone, VFS_IN_READ, fildes, &answer);
     rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
+    req = async_send_1(vfs_phone, VFS_IN_WRITE, fildes, &answer);
     rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);
     if (rc != EOK) {
         async_wait_for(req, NULL);
         async_serialize_end();
         futex_up(&vfs_phone_futex);
         return (ssize_t) IPC_GET_ARG1(answer);
     else
         return -1;
+}
+int fsync(int fildes)
+{
+    futex_down(&vfs_phone_futex);
+    async_serialize_start();
+    vfs_connect();
+    ipcarg_t rc = async_req_1_0(vfs_phone, VFS_IN_SYNC, fildes);
+    async_serialize_end();
+    futex_up(&vfs_phone_futex);
+    return (int) rc;
+}
 off_t lseek(int fildes, off_t offset, int whence)
+{
     ipcarg_t rc;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
     ipcarg_t newoffs;
-    rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
+    rc = async_req_3_1(vfs_phone, VFS_IN_SEEK, fildes, offset, whence,
         &newoffs);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
+    rc = async_req_2_0(vfs_phone, VFS_IN_TRUNCATE, fildes, length);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     return (int) rc;
+}
+int fstat(int fildes, struct stat *stat)
+{
+    ipcarg_t rc;
+    aid_t req;
+    futex_down(&vfs_phone_futex);
+    async_serialize_start();
+    vfs_connect();
+    req = async_send_1(vfs_phone, VFS_IN_FSTAT, fildes, NULL);
+    rc = ipc_data_read_start(vfs_phone, (void *)stat, sizeof(struct stat));
+    if (rc != EOK) {
+        async_wait_for(req, NULL);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        return (ssize_t) rc;
+    }
+    async_wait_for(req, &rc);
+    async_serialize_end();
+    futex_up(&vfs_phone_futex);
+    return rc;
+}
+int stat(const char *path, struct stat *stat)
+{
+    ipcarg_t rc;
+    aid_t req;
+    size_t pa_size;
+    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_IN_STAT, NULL);
+    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);
+        return (int) rc;
+    }
+    rc = ipc_data_read_start(vfs_phone, stat, sizeof(struct stat));
+    if (rc != EOK) {
+        async_wait_for(req, NULL);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        free(pa);
+        return (int) rc;
+    }
+    async_wait_for(req, &rc);
+    async_serialize_end();
+    futex_up(&vfs_phone_futex);
+    free(pa);
+    return rc;
+}
 DIR *opendir(const char *dirname)
+{
     DIR *dirp = malloc(sizeof(DIR));
     if (!dirp)
         return NULL;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);
+    req = async_send_1(vfs_phone, VFS_IN_MKDIR, mode, NULL);
     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);
+    }
     async_wait_for(req, &rc);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     free(pa);
     return rc;
+}
 static int _unlink(const char *path, int lflag)
+{
     ipcarg_t rc;
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_0(vfs_phone, VFS_UNLINK, NULL);
+    req = async_send_0(vfs_phone, VFS_IN_UNLINK, NULL);
     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);
+    }
     async_wait_for(req, &rc);
     async_serialize_end();
     futex_up(&vfs_phone_futex);
     free(pa);
     return rc;
+}
 int unlink(const char *path)
+{
     return _unlink(path, L_NONE);
     futex_down(&vfs_phone_futex);
     async_serialize_start();
     vfs_connect();
-    req = async_send_0(vfs_phone, VFS_RENAME, NULL);
+    req = async_send_0(vfs_phone, VFS_IN_RENAME, NULL);
     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);
     str_cpy(buf, size, cwd_path);
     futex_up(&cwd_futex);
     return buf;
+}
+int fd_phone(int fildes)
+{
+    struct stat stat;
+    int rc;
+    rc = fstat(fildes, &stat);
+    if (!stat.devfs_stat.device)
+        return -1;
+    return devmap_device_connect(stat.devfs_stat.device, 0);
+}
+int fd_node(int fildes, fdi_node_t *node)
+{
+    struct stat stat;
+    int rc;
+    rc = fstat(fildes, &stat);
+    if (rc == EOK) {
+        node->fs_handle = stat.fs_handle;
+        node->dev_handle = stat.dev_handle;
+        node->index = stat.index;
+    }
+    return rc;
+}
 /** @}
  */

Subversion Repositories HelenOS

(root)//branches/tracing/uspace/lib/libc/generic/vfs/vfs.c – Rev 4377 → 4692