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[PATCH] strndup_user()

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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>
This commit is contained in:
Davi Arnaut
2006-03-24 03:18:42 -08:00
committed by Linus Torvalds
parent 6687a97d40
commit 96840aa00a
2 changed files with 39 additions and 0 deletions
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include/linux/string.h
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@ -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
*/