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[Patch] fs/binfmt_elf.c: fix wrong return values 

create_elf_tables() returns 0 on success. But when strnlen_user() "fails",
it returns 0 directly. So this is wrong.

Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
WANG Cong 2008-05-08 21:52:33 +08:00 committed by Al Viro
parent 08a6fac1c6
commit 23c4971e3d
1 changed files with 2 additions and 2 deletions
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4
fs/binfmt_elf.c
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@ -256,7 +256,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return -EFAULT; return -EFAULT;
len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); len = strnlen_user((void __user *)p, MAX_ARG_STRLEN);
if (!len || len > MAX_ARG_STRLEN) if (!len || len > MAX_ARG_STRLEN)
return 0; return -EINVAL;
p += len; p += len;
} }
if (__put_user(0, argv)) if (__put_user(0, argv))
@ -268,7 +268,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return -EFAULT; return -EFAULT;
len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); len = strnlen_user((void __user *)p, MAX_ARG_STRLEN);
if (!len || len > MAX_ARG_STRLEN) if (!len || len > MAX_ARG_STRLEN)
return 0; return -EINVAL;
p += len; p += len;
} }
if (__put_user(0, envp)) if (__put_user(0, envp))