Implemented <sys/statvfs.h>.

2 files changed, 81 insertions, 0 deletions

diff --git a/src/library.js b/src/library.js
index 226d278d..5ad8dc06 100644
--- a/src/library.js
+++ b/src/library.js
@@ -671,6 +671,43 @@ LibraryManager.library = {
   // __01lstat64_: 'stat',
 
   // ==========================================================================
+  // sys/statvfs.h
+  // ==========================================================================
+
+  // TODO: Update this to be auto-created.
+  __statvfs_struct_layout: Runtime.generateStructInfo([
+      'f_bsize', 'f_frsize', 'f_blocks', 'f_bfree', 'f_bavail', 'f_files',
+      'f_ffree', 'f_favail', 'f_fsid', '__f_unused', 'f_flag', 'f_namemax',
+      '__f_spare'
+    ], '%struct.statvfs'
+  ),
+  statvfs__deps: ['$FS', '__statvfs_struct_layout'],
+  statvfs: function(path, buf) {
+    // http://pubs.opengroup.org/onlinepubs/7908799/xsh/stat.html
+    // int statvfs(const char *restrict path, struct statvfs *restrict buf);
+    // NOTE: None of the constant here are true. We're just returning safe and
+    //       sane values.
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_bsize', '4096', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_frsize', '4096', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_blocks', '1000000', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_bfree', '500000', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_bavail', '500000', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_files', 'FS.nextInode', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_ffree', '1000000', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_favail', '1000000', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_fsid', '42', 'i32') }}}
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_flag', '2', 'i32') }}}  // ST_NOSUID
+    {{{ makeSetValue('buf', '___statvfs_struct_layout.f_namemax', '255', 'i32') }}}
+    return 0;
+  },
+  fstatvfs__deps: ['statvfs'],
+  fstatvfs: function(fildes, buf) {
+    // int fstatvfs(int fildes, struct statvfs *buf);
+    // http://pubs.opengroup.org/onlinepubs/009604499/functions/statvfs.html
+    return _statvfs(0, buf);
+  },
+
+  // ==========================================================================
 
   _scanString: function() {
     // Supports %x, %4x, %d.%d, %s
diff --git a/tests/runner.py b/tests/runner.py
index 4a738c66..ff90e63b 100644
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -2173,6 +2173,50 @@ if 'benchmark' not in sys.argv:
       expected = open(path_from_root('tests', 'stat', 'output.txt'), 'r').read()
       self.do_test(src, expected, post_build=addPreRun)
 
+    def test_statvfs(self):
+      src = r'''
+        #include <stdio.h>
+        #include <errno.h>
+        #include <sys/statvfs.h>
+
+        int main() {
+          struct statvfs s;
+
+          printf("result: %d\n", statvfs("/test", &s));
+          printf("errno: %d\n", errno);
+
+          printf("f_bsize: %lu\n", s.f_bsize);
+          printf("f_frsize: %lu\n", s.f_frsize);
+          printf("f_blocks: %lu\n", s.f_blocks);
+          printf("f_bfree: %lu\n", s.f_bfree);
+          printf("f_bavail: %lu\n", s.f_bavail);
+          printf("f_files: %lu\n", s.f_files);
+          printf("f_ffree: %lu\n", s.f_ffree);
+          printf("f_favail: %lu\n", s.f_favail);
+          printf("f_fsid: %lu\n", s.f_fsid);
+          printf("f_flag: %lu\n", s.f_flag);
+          printf("f_namemax: %lu\n", s.f_namemax);
+
+          return 0;
+        }
+        '''
+      expected = r'''
+        result: 0
+        errno: 0
+        f_bsize: 4096
+        f_frsize: 4096
+        f_blocks: 1000000
+        f_bfree: 500000
+        f_bavail: 500000
+        f_files: 2
+        f_ffree: 1000000
+        f_favail: 1000000
+        f_fsid: 42
+        f_flag: 2
+        f_namemax: 255
+        '''
+      self.do_test(src, re.sub('(^|\n)\s+', '\\1', expected))
+
     def test_libgen(self):
       src = r'''
         #include <stdio.h>