Changeset 97b1dfc2 in mainline for uspace/lib/posix/include/posix/unistd.h

Timestamp:

2018-09-24T15:36:21Z (6 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Branches:

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

Children:

34c76e2f

Parents:

631281d

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-09-24 15:02:32)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-09-24 15:36:21)

Message:

Make libposix headers understand _FILE_OFFSET_BITS and _LARGEFILE64_SOURCE

File:

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

uspace/lib/posix/include/posix/unistd.h

@@ -80 +80 @@
 extern ssize_t read(int fildes, void *buf, size_t nbyte);
 extern ssize_t write(int fildes, const void *buf, size_t nbyte);
-extern off_t lseek(int fildes,
-    off_t offset, int whence);
 extern int fsync(int fildes);
 extern int ftruncate(int fildes, off_t length);
@@ -88 +86 @@
 extern int dup(int fildes);
 extern int dup2(int fildes, int fildes2);
+
+#ifdef _LARGEFILE64_SOURCE
+extern off64_t lseek64(int fildes, off64_t offset, int whence);
+#endif
+
+#if _FILE_OFFSET_BITS == 64
+static inline off_t lseek(int fildes, off_t offset, int whence)
+{
+        /* Declarations visible in this function body only. */
+        typedef int64_t off64_t;
+        extern off64_t lseek64(int fildes, off64_t offset, int whence);
+
+        /* With _FILE_OFFSET_BITS == 64, lseek is actually lseek64. */
+        return lseek64(fildes, offset, whence);
+}
+#else
+extern off_t lseek(int fildes, off_t offset, int whence);
+#endif
 
 /* Standard Streams */