The patch titled
Implement kasprintf
has been added to the -mm tree. Its filename is
implement-kasprintf.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Implement kasprintf
From: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Implement kasprintf, a kernel version of asprintf. This allocates the
memory required for the formatted string, including the trailing '\0'.
Returns NULL on allocation failure.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/kernel.h | 2 ++
lib/vsprintf.c | 23 +++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff -puN include/linux/kernel.h~implement-kasprintf include/linux/kernel.h
--- 25/include/linux/kernel.h~implement-kasprintf Tue Jun 20 17:54:53 2006
+++ 25-akpm/include/linux/kernel.h Tue Jun 20 17:54:53 2006
@@ -119,6 +119,8 @@ extern int scnprintf(char * buf, size_t
__attribute__ ((format (printf, 3, 4)));
extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
__attribute__ ((format (printf, 3, 0)));
+extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
extern int sscanf(const char *, const char *, ...)
__attribute__ ((format (scanf, 2, 3)));
diff -puN lib/vsprintf.c~implement-kasprintf lib/vsprintf.c
--- 25/lib/vsprintf.c~implement-kasprintf Tue Jun 20 17:54:53 2006
+++ 25-akpm/lib/vsprintf.c Tue Jun 20 17:54:53 2006
@@ -849,3 +849,26 @@ int sscanf(const char * buf, const char
}
EXPORT_SYMBOL(sscanf);
+
+
+/* Simplified asprintf. */
+char *kasprintf(gfp_t gfp, const char *fmt, ...)
+{
+ va_list ap;
+ unsigned int len;
+ char *p;
+
+ va_start(ap, fmt);
+ len = vsnprintf(NULL, 0, fmt, ap);
+ va_end(ap);
+
+ p = kmalloc(len+1, gfp);
+ if (!p)
+ return NULL;
+ va_start(ap, fmt);
+ vsnprintf(p, len+1, fmt, ap);
+ va_end(ap);
+ return p;
+}
+
+EXPORT_SYMBOL(kasprintf);
_
Patches currently in -mm which might be from jeremy@xxxxxxxxxxxxx are
clean-up-and-refactor-i386-sub-architecture-setup.patch
fix-bounds-check-in-vsnprintf-to-allow-for-a-0-size-and.patch
fix-bounds-check-in-vsnprintf-to-allow-for-a-0-size-and-tidy.patch
implement-kasprintf.patch
-
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