Re: pack.packSizeLimit, safety checks

[Junio C Hamano <gitster@pobox.com>]

Nicolas Pitre <nico@fluxnic.net> writes:

> Thing is... I don't know if the --max-pack-size argument is really that 
> used.  I'd expect people relying on that feature to use the config 
> variable instead,...

I suspect one of us need to be careful not to forget this thing...

-- >8 --
Subject: pack-objects --max-pack-size=<n> counts in bytes

The --window-memory argument and pack.packsizelimit configuration used by
the same program counted in bytes and honored the standard k/m/g suffixes.
Make this option do the same for consistency.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 Documentation/RelNotes-1.7.0.txt   |    6 ++++++
 Documentation/git-pack-objects.txt |    3 ++-
 builtin-pack-objects.c             |    7 +++----
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/Documentation/RelNotes-1.7.0.txt b/Documentation/RelNotes-1.7.0.txt
index 323ae54..adf8824 100644
--- a/Documentation/RelNotes-1.7.0.txt
+++ b/Documentation/RelNotes-1.7.0.txt
@@ -46,6 +46,12 @@ Notes on behaviour change
    environment, and diff.*.command and diff.*.textconv in the config
    file.
 
+ * "git pack-objects --max-pack-size=<n>" used to count in megabytes,
+   which was inconsistent with its corresponding configuration
+   variable and other options the command takes.  Now it counts in bytes
+   and allows standard k/m/g suffixes to be given.
+
+
 Updates since v1.6.6
 --------------------
 
diff --git a/Documentation/git-pack-objects.txt b/Documentation/git-pack-objects.txt
index 097a147..fdaf775 100644
--- a/Documentation/git-pack-objects.txt
+++ b/Documentation/git-pack-objects.txt
@@ -106,7 +106,8 @@ base-name::
 	default.
 
 --max-pack-size=<n>::
-	Maximum size of each output packfile, expressed in MiB.
+	Maximum size of each output packfile, expressed in bytes.  The
+	size can be suffixed with "k", "m", or "g".
 	If specified,  multiple packfiles may be created.
 	The default is unlimited, unless the config variable
 	`pack.packSizeLimit` is set.
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index 4a41547..33e11d7 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -2203,11 +2203,10 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 			continue;
 		}
 		if (!prefixcmp(arg, "--max-pack-size=")) {
-			char *end;
-			pack_size_limit_cfg = 0;
-			pack_size_limit = strtoul(arg+16, &end, 0) * 1024 * 1024;
-			if (!arg[16] || *end)
+			unsigned long ul = 0;
+			if (!git_parse_ulong(arg + 16, &ul))
 				usage(pack_usage);
+			pack_size_limit_cfg = ul;
 			continue;
 		}
 		if (!prefixcmp(arg, "--window=")) {