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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2015-02-12 15:02:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-12 18:54:15 -0800
commit114fc1afb2de7dec40da137dc2a55cd38fc220f2 (patch)
tree414c7731a5a4743cbdba6583a1b79f3723ec190d /include
parent5d909c8d54b114eddb7c50506f03bf7309a9192e (diff)
hexdump: make it return number of bytes placed in buffer
This patch makes hexdump return the number of bytes placed in the buffer excluding trailing NUL. In the case of overflow it returns the desired amount of bytes to produce the entire dump. Thus, it mimics snprintf(). This will be useful for users that would like to repeat with a bigger buffer. [akpm@linux-foundation.org: fix printk warning] Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/printk.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 4d5bf5726578..baa3f97d8ce8 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -417,9 +417,9 @@ enum {
DUMP_PREFIX_ADDRESS,
DUMP_PREFIX_OFFSET
};
-extern void hex_dump_to_buffer(const void *buf, size_t len,
- int rowsize, int groupsize,
- char *linebuf, size_t linebuflen, bool ascii);
+extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
+ int groupsize, char *linebuf, size_t linebuflen,
+ bool ascii);
#ifdef CONFIG_PRINTK
extern void print_hex_dump(const char *level, const char *prefix_str,
int prefix_type, int rowsize, int groupsize,