Changes in uspace/lib/c/generic/vfs/vfs.c [15f3c3f:8fd04ba9] in mainline

File:

• uspace/lib/c/generic/vfs/vfs.c (modified) (13 diffs)

uspace/lib/c/generic/vfs/vfs.c

@@ -51 +51 @@
 #include <assert.h>
 #include <str.h>
-#include <loc.h>
+#include <devmap.h>
 #include <ipc/vfs.h>
-#include <ipc/loc.h>
+#include <ipc/devmap.h>
 
 static FIBRIL_MUTEX_INITIALIZE(vfs_mutex);
@@ -142 +142 @@
 }
 
-int mount(const char *fs_name, const char *mp, const char *fqsn,
+int mount(const char *fs_name, const char *mp, const char *fqdn,
     const char *opts, unsigned int flags)
 {
         int null_id = -1;
-        char null[LOC_NAME_MAXLEN];
-        
-        if (str_cmp(fqsn, "") == 0) {
+        char null[DEVMAP_NAME_MAXLEN];
+        
+        if (str_cmp(fqdn, "") == 0) {
                 /* No device specified, create a fresh
                    null/%d device instead */
-                null_id = loc_null_create();
+                null_id = devmap_null_create();
                 
                 if (null_id == -1)
                         return ENOMEM;
                 
-                snprintf(null, LOC_NAME_MAXLEN, "null/%d", null_id);
-                fqsn = null;
-        }
-        
-        service_id_t service_id;
-        int res = loc_service_get_id(fqsn, &service_id, flags);
+                snprintf(null, DEVMAP_NAME_MAXLEN, "null/%d", null_id);
+                fqdn = null;
+        }
+        
+        devmap_handle_t devmap_handle;
+        int res = devmap_device_get_handle(fqdn, &devmap_handle, flags);
         if (res != EOK) {
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 return res;
@@ -173 +173 @@
         if (!mpa) {
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 return ENOMEM;
@@ -181 +181 @@
 
         sysarg_t rc_orig;
-        aid_t req = async_send_2(exch, VFS_IN_MOUNT, service_id, flags, NULL);
+        aid_t req = async_send_2(exch, VFS_IN_MOUNT, devmap_handle, flags, NULL);
         sysarg_t rc = async_data_write_start(exch, (void *) mpa, mpa_size);
         if (rc != EOK) {
@@ -189 +189 @@
                 
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 if (rc_orig == EOK)
@@ -204 +204 @@
                 
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 if (rc_orig == EOK)
@@ -219 +219 @@
                 
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 if (rc_orig == EOK)
@@ -235 +235 @@
                 
                 if (null_id != -1)
-                        loc_null_destroy(null_id);
+                        devmap_null_destroy(null_id);
                 
                 if (rc_orig == EOK)
@@ -248 +248 @@
         
         if ((rc != EOK) && (null_id != -1))
-                loc_null_destroy(null_id);
+                devmap_null_destroy(null_id);
         
         return (int) rc;
@@ -335 +335 @@
         ipc_call_t answer;
         aid_t req = async_send_4(exch, VFS_IN_OPEN_NODE, node->fs_handle,
-            node->service_id, node->index, oflag, &answer);
+            node->devmap_handle, node->index, oflag, &answer);
         
         vfs_exchange_end(exch);
@@ -415 +415 @@
         else
                 return -1;
+}
+
+/** Read entire buffer.
+ *
+ * In face of short reads this function continues reading until either
+ * the entire buffer is read or no more data is available (at end of file).
+ *
+ * @param fildes        File descriptor
+ * @param buf           Buffer, @a nbytes bytes long
+ * @param nbytes        Number of bytes to read
+ *
+ * @return              On success, positive number of bytes read.
+ *                      On failure, negative error code from read().
+ */
+ssize_t read_all(int fildes, void *buf, size_t nbyte)
+{
+        ssize_t cnt = 0;
+        size_t nread = 0;
+        uint8_t *bp = (uint8_t *) buf;
+
+        do {
+                bp += cnt;
+                nread += cnt;
+                cnt = read(fildes, bp, nbyte - nread);
+        } while (cnt > 0 && (nbyte - nread - cnt) > 0);
+
+        if (cnt < 0)
+                return cnt;
+
+        return nread + cnt;
+}
+
+/** Write entire buffer.
+ *
+ * This function fails if it cannot write exactly @a len bytes to the file.
+ *
+ * @param fildes        File descriptor
+ * @param buf           Data, @a nbytes bytes long
+ * @param nbytes        Number of bytes to write
+ *
+ * @return              EOK on error, return value from write() if writing
+ *                      failed.
+ */
+ssize_t write_all(int fildes, const void *buf, size_t nbyte)
+{
+        ssize_t cnt = 0;
+        ssize_t nwritten = 0;
+        const uint8_t *bp = (uint8_t *) buf;
+
+        do {
+                bp += cnt;
+                nwritten += cnt;
+                cnt = write(fildes, bp, nbyte - nwritten);
+        } while (cnt > 0 && ((ssize_t )nbyte - nwritten - cnt) > 0);
+
+        if (cnt < 0)
+                return cnt;
+
+        if ((ssize_t)nbyte - nwritten - cnt > 0)
+                return EIO;
+
+        return nbyte;
 }
 
@@ -749 +811 @@
         }
         
-        if (!stat.service) {
+        if (!stat.device) {
                 errno = ENOENT;
                 return NULL;
         }
         
-        return loc_service_connect(mgmt, stat.service, 0);
+        return devmap_device_connect(mgmt, stat.device, 0);
 }
 
@@ -764 +826 @@
         if (rc == EOK) {
                 node->fs_handle = stat.fs_handle;
-                node->service_id = stat.service_id;
+                node->devmap_handle = stat.devmap_handle;
                 node->index = stat.index;
         }