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| author | Namjae Jeon <namjae.jeon@samsung.com> | 2013-02-04 14:41:41 (GMT) |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-02-11 22:15:02 (GMT) |
| commit | e9750824114ff939d9da299e73651add6aa65456 (patch) | |
| tree | fbaa154683ec00dc49e0a19e3a2069abb90d953f /fs/f2fs/file.c | |
| parent | b7250d2d845822466356f7f22a650bf807090d7e (diff) | |
| download | linux-fsl-qoriq-e9750824114ff939d9da299e73651add6aa65456.tar.xz | |
f2fs: add compat_ioctl to provide backward compatability
adding compat_ioctl to provide support for backward comptability - 32bit binary
execution on 64bit kernel.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/file.c')
| -rw-r--r-- | fs/f2fs/file.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 33d1736..b7a053d 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -15,6 +15,7 @@ #include <linux/writeback.h> #include <linux/falloc.h> #include <linux/types.h> +#include <linux/compat.h> #include <linux/uaccess.h> #include <linux/mount.h> @@ -634,6 +635,23 @@ out: } } +#ifdef CONFIG_COMPAT +long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case F2FS_IOC32_GETFLAGS: + cmd = F2FS_IOC_GETFLAGS; + break; + case F2FS_IOC32_SETFLAGS: + cmd = F2FS_IOC_SETFLAGS; + break; + default: + return -ENOIOCTLCMD; + } + return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); +} +#endif + const struct file_operations f2fs_file_operations = { .llseek = generic_file_llseek, .read = do_sync_read, @@ -645,6 +663,9 @@ const struct file_operations f2fs_file_operations = { .fsync = f2fs_sync_file, .fallocate = f2fs_fallocate, .unlocked_ioctl = f2fs_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = f2fs_compat_ioctl, +#endif .splice_read = generic_file_splice_read, .splice_write = generic_file_splice_write, }; |