From 85c9fe8fcaf630225b26047b3a7cc5167739eced Mon Sep 17 00:00:00 2001 From: Kevin Winchester Date: Mon, 9 Aug 2010 17:20:22 -0700 Subject: vfs: fix warning: 'dirent' is used uninitialized in this function Using: gcc (GCC) 4.5.0 20100610 (prerelease) The following warnings appear: fs/readdir.c: In function `filldir64': fs/readdir.c:240:15: warning: `dirent' is used uninitialized in this function fs/readdir.c: In function `filldir': fs/readdir.c:155:15: warning: `dirent' is used uninitialized in this function fs/compat.c: In function `compat_filldir64': fs/compat.c:1071:11: warning: `dirent' is used uninitialized in this function fs/compat.c: In function `compat_filldir': fs/compat.c:984:15: warning: `dirent' is used uninitialized in this function The warnings are related to the use of the NAME_OFFSET() macro. Luckily, it appears as though the standard offsetof() macro is what is being implemented by NAME_OFFSET(), thus we can fix the warning and use a more standard code construct at the same time. Signed-off-by: Kevin Winchester Cc: Al Viro Cc: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/compat.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'fs/compat.c') diff --git a/fs/compat.c b/fs/compat.c index c6fda9a..5976bad8 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -15,6 +15,7 @@ * published by the Free Software Foundation. */ +#include #include #include #include @@ -891,8 +892,6 @@ asmlinkage long compat_sys_mount(char __user * dev_name, char __user * dir_name, return retval; } -#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) - struct compat_old_linux_dirent { compat_ulong_t d_ino; compat_ulong_t d_offset; @@ -981,7 +980,8 @@ static int compat_filldir(void *__buf, const char *name, int namlen, struct compat_linux_dirent __user * dirent; struct compat_getdents_callback *buf = __buf; compat_ulong_t d_ino; - int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 2, sizeof(compat_long_t)); + int reclen = ALIGN(offsetof(struct compat_linux_dirent, d_name) + + namlen + 2, sizeof(compat_long_t)); buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) @@ -1068,8 +1068,8 @@ static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t { struct linux_dirent64 __user *dirent; struct compat_getdents_callback64 *buf = __buf; - int jj = NAME_OFFSET(dirent); - int reclen = ALIGN(jj + namlen + 1, sizeof(u64)); + int reclen = ALIGN(offsetof(struct linux_dirent64, d_name) + namlen + 1, + sizeof(u64)); u64 off; buf->error = -EINVAL; /* only used if we fail.. */ -- cgit v1.1