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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-07-23 21:29:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 10:47:27 -0700 |
| commit | 6e2c10a12a2170856f5582d62d583cbcd1cb5eaf (patch) | |
| tree | 139bbb09655994b60eaa7c0e4bfccf775f4ab8e8 /fs/binfmt_misc.c | |
| parent | 76a6f3dc9a7108785c145a298f82c72f9208fe17 (diff) | |
| download | linux-6e2c10a12a2170856f5582d62d583cbcd1cb5eaf.tar.bz2 | |
binfmt_misc: use simple_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/binfmt_misc.c')
| -rw-r--r-- | fs/binfmt_misc.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 7191306367c5..756205314c24 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -27,6 +27,7 @@ #include <linux/namei.h> #include <linux/mount.h> #include <linux/syscalls.h> +#include <linux/fs.h> #include <asm/uaccess.h> @@ -535,31 +536,16 @@ static ssize_t bm_entry_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos) { Node *e = file->f_path.dentry->d_inode->i_private; - loff_t pos = *ppos; ssize_t res; char *page; - int len; if (!(page = (char*) __get_free_page(GFP_KERNEL))) return -ENOMEM; entry_status(e, page); - len = strlen(page); - res = -EINVAL; - if (pos < 0) - goto out; - res = 0; - if (pos >= len) - goto out; - if (len < pos + nbytes) - nbytes = len - pos; - res = -EFAULT; - if (copy_to_user(buf, page + pos, nbytes)) - goto out; - *ppos = pos + nbytes; - res = nbytes; -out: + res = simple_read_from_buffer(buf, nbytes, ppos, page, strlen(page)); + free_page((unsigned long) page); return res; } |