For modern filesystems such as btrfs, t/p/e size level operations
are common.
add size unit t/p/e parsing to memparse
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
---
changelog
v1->v2: replace kilobyte with kibibyte, and others
---
lib/cmdline.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/lib/cmdline.c b/lib/cmdline.c
index eb67911..7cf5cb8 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -119,11 +119,17 @@ char *get_options(const char *str, int nints, int *ints)
* @retptr: (output) Optional pointer to next char after parse completes
*
* Parses a string into a number. The number stored at @ptr is
- * potentially suffixed with %K (for kilobytes, or 1024 bytes),
- * %M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or
- * 1073741824). If the number is suffixed with K, M, or G, then
- * the return value is the number multiplied by one kilobyte, one
- * megabyte, or one gigabyte, respectively.
+ * potentially suffixed with
+ * %K (for kibibytes, or 1024 bytes),
+ * %M (for mebibytes, or 1048576 bytes),
+ * %G (for gibibytes, or 1073741824),
+ * %T (for tebibytes, or 1099511627776),
+ * %P (for pebibytes, or 1125899906842624 bytes),
+ * %E (for exbibytes, or 1152921504606846976 bytes).
+ * If the number is suffixed with K, M, G, T, P, E, then
+ * the return value is the number multiplied by one kibibyte, one
+ * mebibyte, one gibibyte, one tebibyte, one pebibyte, one exbibyte,
+ * respectively.
*/
unsigned long long memparse(const char *ptr, char **retptr)
@@ -133,6 +139,15 @@ unsigned long long memparse(const char *ptr, char **retptr)
unsigned long long ret = simple_strtoull(ptr, &endptr, 0);
switch (*endptr) {
+ case 'E':
+ case 'e':
+ ret <<= 10;
+ case 'P':
+ case 'p':
+ ret <<= 10;
+ case 'T':
+ case 't':
+ ret <<= 10;
case 'G':
case 'g':
ret <<= 10;
--
1.8.1.4