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authorDavi Arnaut <davi.arnaut@gmail.com>2006-03-24 03:18:42 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-24 07:33:31 -0800
commit96840aa00a031069a136ec4c55d0bdd09ac6d3a7 (patch)
treef93592ca47f2412aa0cce3ce4c116d1678a42239 /include/linux/string.h
parent6687a97d4041f996f725902d2990e5de6ef5cbe5 (diff)
downloadop-kernel-dev-96840aa00a031069a136ec4c55d0bdd09ac6d3a7.zip
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[PATCH] strndup_user()
This patch series creates a strndup_user() function to easy copying C strings from userspace. Also we avoid common pitfalls like userspace modifying the final \0 after the strlen_user(). Signed-off-by: Davi Arnaut <davi.arnaut@gmail.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/string.h')
-rw-r--r--include/linux/string.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/string.h b/include/linux/string.h
index 369be32..dee2214 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -18,6 +18,8 @@ extern char * strsep(char **,const char *);
extern __kernel_size_t strspn(const char *,const char *);
extern __kernel_size_t strcspn(const char *,const char *);
+extern char *strndup_user(const char __user *, long);
+
/*
* Include machine specific inline routines
*/
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