Changeset 9dc6083 in mainline for uspace/lib/c/generic/vfs/vfs.c

Timestamp:

2013-07-06T15:53:01Z (12 years ago)

Author:

Manuele Conti <conti.ma@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

11baebb

Parents:

66366470

Message:

Implement statfs operation.

File:

• uspace/lib/c/generic/vfs/vfs.c (modified) (2 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>
@@ -892 +893 @@
 }
 
-int statfs(const char *path, struct statfs *buf)
-{
-        sysarg_t rc;
-        //aid_t req;
-
-        if ( NULL == buf )
-                return 1;
-
-        sysarg_t value;
-        async_exch_t *exch = vfs_exchange_begin();      
-        rc = async_req_0_1(exch, VFS_IN_STATFS, &value);
-        if (rc != EOK)
-                goto exit;
-
-        buf->f_bsize = value;
-exit:
-        vfs_exchange_end(exch);
+#include <stdio.h>
+int statfs(const char *path, struct statfs *statfs)
+{
+        sysarg_t rc;
+        sysarg_t 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) {
+                vfs_exchange_end(exch);
+                free(pa);
+                async_wait_for(req, &rc_orig);
+                if (rc_orig == EOK)
+                        return (int) rc;
+                else
+                        return (int) rc_orig;
+        }
+        printf("TRACE: send VFS_IN_STATFS\n");
+        rc = async_data_read_start(exch, statfs, sizeof(struct statfs));
+        if (rc != EOK) {
+                printf("TRACE: error reply\n");
+                vfs_exchange_end(exch);
+                free(pa);
+                async_wait_for(req, &rc_orig);
+                if (rc_orig == EOK)
+                        return (int) rc;
+                else
+                        return (int) rc_orig;
+        }
+        vfs_exchange_end(exch);
+        free(pa);
+        async_wait_for(req, &rc);
         return rc;
 }