Changeset ec18957a in mainline for uspace/lib/posix/unistd.c

Timestamp:

2011-07-08T00:54:24Z (14 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

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

Children:

9c1984f

Parents:

3f466c33

Message:

Added errno.h (see commentary inside).

File:

• uspace/lib/posix/unistd.c (modified) (2 diffs)

uspace/lib/posix/unistd.c

@@ -38 +38 @@
 #include "internal/common.h"
 #include "unistd.h"
-#include <task.h>
-#include <errno.h>
+
+#include "errno.h"
 #include "string.h"
 #include "fcntl.h"
-#include <stats.h>
+
+#include "libc/task.h"
+#include "libc/stats.h"
 #include "libc/malloc.h"
 
@@ -145 +147 @@
                 /* Check file existence by attempt to open it. */
                 int fd = open(path, O_RDONLY);
-                // TODO: propagate a POSIX compatible errno
-                int rc = fd < 0 ? -1 : 0;
-                close(fd);
-                return rc;
+                if (fd < 0) {
+                        /* FIXME: open() returns error code as negative retval. */
+                        errno = -fd;
+                        fd = -1;
+                } else {
+                        close(fd);
+                }
+                return fd;
         } else if (amode & (X_OK | W_OK | R_OK)) {
                 /* HelenOS doesn't support permissions, return success. */