Changes in uspace/lib/c/generic/vfs/vfs.c [35a35651:fa24efa] in mainline

File:

• uspace/lib/c/generic/vfs/vfs.c (modified) (5 diffs)

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

@@ -43 +43 @@
 #include <stdio.h>
 #include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/types.h>
 #include <ipc/services.h>
@@ -341 +342 @@
 }
 
-ssize_t read(int fildes, void *buf, size_t nbyte) 
+ssize_t read(int fildes, void *buf, size_t nbyte)
 {
         sysarg_t rc;
@@ -347 +348 @@
         aid_t req;
         
+        if (nbyte > DATA_XFER_LIMIT)
+                nbyte = DATA_XFER_LIMIT;
+        
         async_exch_t *exch = vfs_exchange_begin();
         
         req = async_send_1(exch, VFS_IN_READ, fildes, &answer);
-        rc = async_data_read_start(exch, (void *)buf, nbyte);
+        rc = async_data_read_start(exch, (void *) buf, nbyte);
         if (rc != EOK) {
                 vfs_exchange_end(exch);
@@ -376 +380 @@
         aid_t req;
         
+        if (nbyte > DATA_XFER_LIMIT)
+                nbyte = DATA_XFER_LIMIT;
+        
         async_exch_t *exch = vfs_exchange_begin();
         
         req = async_send_1(exch, VFS_IN_WRITE, fildes, &answer);
-        rc = async_data_write_start(exch, (void *)buf, nbyte);
+        rc = async_data_write_start(exch, (void *) buf, nbyte);
         if (rc != EOK) {
                 vfs_exchange_end(exch);
@@ -892 +899 @@
 }
 
+int statfs(const char *path, struct statfs *st)
+{
+        sysarg_t rc, rc_orig;
+        aid_t req;
+        size_t pa_size;
+
+        char *pa = absolutize(path, &pa_size);
+        if (!pa)
+                return ENOMEM;
+
+        async_exch_t *exch = vfs_exchange_begin();
+
+        req = async_send_0(exch, VFS_IN_STATFS, NULL);
+        rc = async_data_write_start(exch, pa, pa_size);
+        if (rc != EOK)
+                goto exit;
+
+        rc = async_data_read_start(exch, (void *) st, sizeof(*st));
+
+exit:
+        vfs_exchange_end(exch);
+        free(pa);
+        async_wait_for(req, &rc_orig);
+        return (int) (rc_orig != EOK ? rc_orig : rc);
+}
+
 /** @}
  */