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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2009-12-17 15:27:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-17 15:45:31 -0800
commit8a79503aa83d0f889abc64a2fc0a020411837222 (patch)
tree3c3f182ad290474571ae983c03d5f243e8c9c1cb /lib
parent5d0bb2c4238e333ae18c5cd23f75e02a3dac3519 (diff)
downloadlinux-2.6.34-ux500-8a79503aa83d0f889abc64a2fc0a020411837222.tar.gz
lib/vsprintf.c: document more vsnprintf extensions
These were added in 9ac6e44 (lib/vsprintf.c: add %pU to print UUID/GUIDs) c7dabef (vsprintf: use %pR, %pr instead of %pRt, %pRf) 8a27f7c (lib/vsprintf.c: Add "%pI6c" - print pointer as compressed ipv6 address) 4aa9960 (printk: add %I4, %I6, %i4, %i6 format specifiers) dd45c9c (printk: add %pM format specifier for MAC addresses) but only added comments to pointer() not vsnprintf() that is refered to by printk's comments. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Harvey Harrison <harvey.harrison@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joe Perches <joe@perches.com> Cc: Jens Rosenboom <jens@mcbone.net> Cc: David S. Miller <davem@davemloft.net> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/vsprintf.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 735343fc857..d4996cf46eb 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1179,7 +1179,18 @@ qualifier:
* %ps output the name of a text symbol without offset
* %pF output the name of a function pointer with its offset
* %pf output the name of a function pointer without its offset
- * %pR output the address range in a struct resource
+ * %pR output the address range in a struct resource with decoded flags
+ * %pr output the address range in a struct resource with raw flags
+ * %pM output a 6-byte MAC address with colons
+ * %pm output a 6-byte MAC address without colons
+ * %pI4 print an IPv4 address without leading zeros
+ * %pi4 print an IPv4 address with leading zeros
+ * %pI6 print an IPv6 address with colons
+ * %pi6 print an IPv6 address without colons
+ * %pI6c print an IPv6 address as specified by
+ * http://www.ietf.org/id/draft-kawamura-ipv6-text-representation-03.txt
+ * %pU[bBlL] print a UUID/GUID in big or little endian using lower or upper
+ * case.
* %n is ignored
*
* The return value is the number of characters which would