Changeset e3480d5 in mainline

Timestamp:

2013-07-29T13:16:03Z (11 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

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

Children:

bf963b9

Parents:

ccdc63e

Message:

add lseek() to the posix library, move SEEK_CUR, SEEK_SET and SEEK_END from stdio.h to unistd.h

Location:

uspace/lib/posix

Files:

• include/posix/stdio.h (modified) (1 diff)
• include/posix/unistd.h (modified) (2 diffs)
• source/unistd.c (modified) (1 diff)

uspace/lib/posix/include/posix/stdio.h

@@ -65 +65 @@
 
 #define BUFSIZ  4096
-#define SEEK_SET  0
-#define SEEK_CUR  1
-#define SEEK_END  2
 
 typedef struct _IO_FILE FILE;

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

@@ -44 +44 @@
 #include "stddef.h"
 
+#define SEEK_SET  0
+#define SEEK_CUR  1
+#define SEEK_END  2
+
 /* Process Termination */
 #define _exit exit
@@ -77 +81 @@
 extern ssize_t __POSIX_DEF__(read)(int fildes, void *buf, size_t nbyte);
 extern ssize_t __POSIX_DEF__(write)(int fildes, const void *buf, size_t nbyte);
+extern __POSIX_DEF__(off_t) __POSIX_DEF__(lseek)(int fildes,
+    __POSIX_DEF__(off_t) offset, int whence);
 extern int __POSIX_DEF__(fsync)(int fildes);
 extern int __POSIX_DEF__(ftruncate)(int fildes, __POSIX_DEF__(off_t) length);

uspace/lib/posix/source/unistd.c

@@ -221 +221 @@
 {
         return errnify(write, fildes, buf, nbyte);
+}
+
+/**
+ * Reposition read/write file offset
+ *
+ * @param fildes File descriptor of the opened file.
+ * @return Upon successful completion, returns the resulting offset
+ *         as measured in bytes from the beginning of the file, -1 otherwise.
+ */
+posix_off_t posix_lseek(int fildes, posix_off_t offset, int whence)
+{
+        return errnify(lseek, fildes, offset, whence);
 }